阅读说明：本技术 磁性体管理系统和磁性体管理方法 (Magnetic substance management system and magnetic substance management method ) 是由 児玉博明 山下光夫 赤瀬川聪 野地健俊 高见芳夫 于 2018-10-16 设计创作，主要内容包括：该磁性体管理系统(100)具备：第一磁性体检查装置(1),其在磁性体(MM)被设置于使用场所之前获取探测信号(DS)；与第一磁性体检查装置(1)相同方式的第二磁性体检查装置(2),其在磁性体(MM)被设置于使用场所之后获取探测信号(DS)；服务器(3)；第一发送部(4)以及第二发送部(5),其中,服务器(3)至少基于第一磁性体信息(10)和第二磁性体信息(11)来估计磁性体(MM)的劣化状态。(The magnetic substance management system (100) is provided with: a first magnetic substance inspection device (1) that acquires a probe signal (DS) before the magnetic substance (MM) is installed in a place of use; a second magnetic substance inspection device (2) which acquires a Detection Signal (DS) after the magnetic substance (MM) is set in a place of use, in the same manner as the first magnetic substance inspection device (1); a server (3); a first transmission unit (4) and a second transmission unit (5), wherein the server (3) estimates the degradation state of the magnetic body (MM) based on at least the first magnetic body information (10) and the second magnetic body information (11).)

1. A magnetic material management system is provided with:

a first magnetic substance inspection device that acquires a detection signal based on a magnetic field or a change in the magnetic field of a magnetic substance before the magnetic substance is installed in a place of use;

a second magnetic substance inspection device that acquires the detection signal of the magnetic substance after the magnetic substance is installed in a place of use, in the same manner as the first magnetic substance inspection device;

a server for storing information of the magnetic body;

a first transmission unit that transmits, to the server, first magnetic material information in which the probe signal acquired by the first magnetic material inspection device is associated with an identifier of the magnetic material; and

a second transmission unit that transmits, to the server, second magnetic material information in which the probe signal acquired by the second magnetic material inspection device is associated with the identifier of the magnetic material,

wherein the server is configured to estimate a degradation state of the magnetic substance based on at least the first magnetic substance information and the second magnetic substance information.

2. The magnetic substance management system according to claim 1, wherein,

the server is configured to: estimating a degradation state of the magnetic body by acquiring a differential waveform of the first magnetic body information and the second magnetic body information.

3. The magnetic substance management system according to claim 1 or 2, wherein,

the server is configured to: when estimating the deterioration state of the magnetic material, the waveform information of the probe signal in the second magnetic material information when it is estimated that the magnetic material is damaged is stored as abnormal information.

4. The magnetic substance management system according to claim 2, wherein,

the server further includes a degradation information transmitting unit that transmits degradation information of the magnetic material including at least the differential waveform in response to a request from at least one of the first magnetic material inspection device and the second magnetic material inspection device.

5. The magnetic substance management system according to any one of claims 1 to 4, wherein,

the first and second transmitters are included in the first and second magnetic material inspection devices or included in devices other than the first and second magnetic material inspection devices, and the first and second transmitters are configured to transmit at least the first and second magnetic material information to the server via a network.

6. The magnetic substance management system according to any one of claims 1 to 3, wherein,

the first magnetic material inspection device and the second magnetic material inspection device include:

a magnetic field applying unit that adjusts a magnetization direction of the magnetic body before the detection of the detection signal;

a detection unit that outputs the detection signal whose magnetization direction has been adjusted by the magnetic field application unit;

an output unit that outputs the detection signal; and

and a deterioration information acquisition unit that acquires information on a deterioration state of the magnetic material.

7. The magnetic substance management system according to claim 6, wherein,

the magnetic field applying unit is configured to: applying a magnetic field to the magnetic body so that magnetization directions of the magnetic body coincide with each other at the time of inspection of the magnetic body at a factory site and at the time of inspection of the magnetic body at a use site.

8. The magnetic substance management system according to claim 1, wherein,

the second magnetic substance inspection device is configured to acquire the detection signal immediately after being installed in a use place,

the server is configured to estimate a deterioration state of the magnetic material based on the first magnetic material information and the second magnetic material information, the second magnetic material information being information obtained by associating the probe signal acquired immediately after installation in a use place with an identifier of the magnetic material.

9. The magnetic substance management system according to any one of claims 1 to 8, wherein,

the magnetic body is a steel wire rope.

10. The magnetic substance management system according to claim 9, wherein,

the identifier of the magnetic material includes an identifier for identifying a portion cut to a predetermined length when the wire rope is manufactured.

11. A magnetic substance management method includes the steps of:

acquiring a first detection signal based on a magnetic field or a change in the magnetic field of a magnetic body at a factory location of the magnetic body;

acquiring a second detection signal of the magnetic body at a place where the magnetic body is used, in the same manner as the manner of acquiring the first detection signal;

storing first magnetic substance information obtained by associating the first probe signal with an identifier of the magnetic substance in a server;

storing second magnetic substance information obtained by associating the second probe signal with the identifier of the magnetic substance in the server; and

estimating a degradation state of the magnetic body based on at least the first magnetic body information and the second magnetic body information.

Technical Field

The present invention relates to a magnetic material management system and a magnetic material management method, and more particularly, to a magnetic material management system and a magnetic material management method for acquiring a deterioration state of a magnetic material by checking the magnetic material over time.

Background

Conventionally, a magnetic substance management system and a magnetic substance management method are known that acquire a deterioration state of a magnetic substance by inspecting the magnetic substance over time. Such a magnetic substance management system and magnetic substance management method are disclosed in, for example, japanese patent No. 5044545.

The magnetic substance management system disclosed in japanese patent No. 5044545 includes a measuring unit that measures the state of a magnetic substance, a first monitoring device, and a second monitoring device. The first monitoring device is connected to the measurement unit via the communication unit, and is configured to accumulate measurement data output from the measurement unit. Further, the first monitoring device is configured to: the state of the magnetic body is determined based on the acquired measurement data and the already accumulated measurement data, and if there is an abnormality, the determination data is transmitted to the second monitoring device. The second monitoring device is configured to: the determination data transmitted from the first monitoring apparatus is checked again to make a final determination, and the result of the final determination is transmitted to the first monitoring apparatus. Further, the magnetic substance management system disclosed in japanese patent No. 5044545 acquires the deterioration state of the wire rope as a magnetic substance. Specifically, the magnetic substance management system disclosed in japanese patent No. 5044545 acquires the deterioration state of a wire rope installed in a crane or the like.

Documents of the prior art

Patent document

Patent document 1: japanese patent No. 5044545

Disclosure of Invention

Problems to be solved by the invention

However, the structure disclosed in japanese patent No. 5044545 is a structure for accumulating measurement data obtained by measuring a state in which a wire rope is set on a crane or the like. Therefore, data obtained by measuring a change in the state of the wire rope occurring before the wire rope is installed, for example, when the wire rope is transported, is not included in the accumulated measurement data. Therefore, there is a problem that the quality of the accumulated measurement data is degraded and the accuracy of the state determination of the magnetic material is degraded.

The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a magnetic substance management system and a magnetic substance management method, in which: the degradation of the quality of the accumulated measurement data can be suppressed, and the degradation of the accuracy of the state determination of the magnetic body can be suppressed.

Means for solving the problems

In order to achieve the above object, a magnetic substance management system according to a first aspect of the present invention includes: a first magnetic substance inspection device that acquires a detection signal based on a magnetic field or a change in the magnetic field of a magnetic substance before the magnetic substance is installed in a place of use; a second magnetic substance inspection device which acquires a detection signal of the magnetic substance after the magnetic substance is set in the use place, in the same manner as the first magnetic substance inspection device; a server for storing information of the magnetic body; a first transmission unit that transmits, to the server, first magnetic material information obtained by associating the probe signal acquired by the first magnetic material inspection device with the identifier of the magnetic material; and a second transmitting unit that transmits, to the server, second magnetic material information that associates the probe signal acquired by the second magnetic material inspection device with the identifier of the magnetic material, wherein the server is configured to estimate the degradation state of the magnetic material based on at least the first magnetic material information and the second magnetic material information. The change in the magnetic field is a broad concept including a temporal change in the intensity of the magnetic field detected by the magnetic material inspection apparatus caused by relatively moving the magnetic material and the magnetic material inspection apparatus and a temporal change in the intensity of the magnetic field detected by the magnetic material inspection apparatus caused by a temporal change in the magnetic field applied to the magnetic material.

As described above, the magnetic substance management system according to the first aspect of the present invention includes the first magnetic substance inspection device, the second magnetic substance inspection device, the server, the first transmission unit, and the second transmission unit, and the server is configured to estimate the deterioration state of the magnetic substance based on at least the first magnetic substance information and the second magnetic substance information. In this way, since the measurement data can be acquired at the shipping location and the use location using the first magnetic substance inspection device and the second magnetic substance inspection device of the same type, not only the measurement data at the use location but also the measurement data at the shipping location can be accumulated. As a result, the degradation of the quality of the accumulated measurement data can be suppressed, and the degradation of the accuracy of the state determination of the magnetic material can be suppressed. Further, since time-series data from the factory location to the use location can be acquired, useful data that brings new insights for improving each process such as manufacturing, management, transportation, and installation can be acquired.

In the magnetic substance management system according to the first aspect, the server is preferably configured to estimate the deterioration state of the magnetic substance by acquiring a differential waveform between the first magnetic substance information and the second magnetic substance information. With such a configuration, since the differential waveform between the first magnetic material information and the second magnetic material information is obtained, it is possible to obtain a change in the deterioration state of the magnetic material that occurs during transportation from a factory location to a use location. As a result, since the change in the deterioration state of the magnetic material at the shipping location, the transportation location, and the use location can be acquired, traceability (traceability) of the magnetic material can be ensured. In the present invention, "damage" of a magnetic material is a broad concept including a change in cross-sectional area with respect to the detection direction (including a change due to a void when damage or the like occurs inside the magnetic material), a change in magnetic permeability due to rust, weld burn, mixing of impurities, a change in composition, or the like of the magnetic material, and other portions where the magnetic material is not uniform.

In the magnetic substance management system according to the first aspect, the server preferably stores, as the abnormality information, waveform information of the probe signal in the second magnetic substance information when it is estimated that the magnetic substance is damaged, when estimating the degradation state of the magnetic substance. With such a configuration, since the abnormality information can be accumulated, the algorithm for estimating the state of deterioration of the magnetic material can be updated based on the accumulated abnormality information. As a result, the accuracy of estimating the deterioration state of the magnetic material can be improved.

When the server acquires the differential waveform, the server preferably further includes a degradation information transmitting unit that transmits degradation information of the magnetic material including at least the differential waveform in response to a request from at least one of the first magnetic material inspection device and the second magnetic material inspection device. With this configuration, the first magnetic substance inspection device and the second magnetic substance inspection device can acquire the differential waveform by requesting the server from the first magnetic substance inspection device and the second magnetic substance inspection device. As a result, the transition of the deterioration state of the magnetic material can be grasped based on the differential waveform at each of the factory location and the use location, and therefore, the timing at which the change in the deterioration state of the magnetic material occurs can be grasped.

In the magnetic material management system according to the first aspect, it is preferable that the first and second transmitters are included in the first and second magnetic material inspection devices or included in devices other than the first and second magnetic material inspection devices, and the first and second transmitters are configured to transmit at least the first and second magnetic material information to the server via a network. With this configuration, when the first and second transmitters are included in the first and second magnetic substance inspection devices, the first and second magnetic substance information can be directly transmitted from the first and second magnetic substance inspection devices to the server, and therefore, the system configuration can be prevented from becoming complicated. In addition, when the first and second transmitters are included in a device (for example, a personal computer or the like) other than the first and second magnetic substance inspection devices, it is not necessary to provide an information transmission function (the first and second transmitters) in the first and second magnetic substance inspection devices, and the first and second magnetic substance inspection devices can be used even in a place where connection to a network is impossible. As a result, the degree of freedom of the system can be improved.

In the magnetic substance management system according to the first aspect, it is preferable that the first magnetic substance inspection device and the second magnetic substance inspection device include: a magnetic field applying unit that adjusts the magnetization direction of the magnetic body before detection of the detection signal; a detection unit that outputs a detection signal whose magnetization direction has been adjusted by the magnetic field application unit; an output unit that outputs a detection signal; and a deterioration information acquisition unit that acquires information on a deterioration state of the magnetic material. With this configuration, the first magnetic substance inspection device and the second magnetic substance inspection device can reduce noise of the detection signal by including the magnetic field applying unit, and therefore, the accuracy of the detection signal can be improved, and the reproducibility of the detection signal detected between the devices can be improved. As a result, since the acquired probe signals have high reproducibility, even when the first magnetic material inspection device and the second magnetic material inspection device, which are different individuals, are used at separate places, the influence of the individual difference between the first magnetic material inspection device and the second magnetic material inspection device in the probe signals can be suppressed, and the respective probe signals can be processed in a unified manner.

In this case, it is preferable that the magnetic field applying unit is configured to: a magnetic field is applied to the magnetic body so that the magnetization directions of the magnetic body coincide with each other at the time of inspection of the magnetic body at a factory site and at the time of inspection of the magnetic body at a use site. With this configuration, the magnetization directions of the magnetic bodies can be aligned between the time of inspecting the magnetic bodies at the factory and the time of inspecting the magnetic bodies at the use site, and it is possible to suppress the occurrence of a difference in the detection signal other than a change in the deterioration state due to a difference in the magnetization directions of the magnetic bodies, and therefore, the reproducibility of the measurement data can be further improved. As a result, the reproducibility of the measurement data can be further improved, and therefore the quality of the measurement data for estimating the deterioration state of the magnetic material can be further improved.

In the magnetic substance management system according to the first aspect, the second magnetic substance inspection device is preferably configured to acquire the probe signal immediately after installation in the use place, and the server is preferably configured to estimate the deterioration state of the magnetic substance based on the first magnetic substance information and the second magnetic substance information in which the probe signal acquired immediately after installation in the use place is associated with the identifier of the magnetic substance. Here, in order to estimate the deterioration state of the magnetic material based on the detection signal before the magnetic material is installed at the use place and the detection signal after the magnetic material is actually placed at the use place, it is necessary to perform the alignment of the respective detection signals. Further, the moving speed of the magnetic body when the probe signal is acquired before the magnetic body after the start of use is installed in the use place may be different from the moving speed of the magnetic body when the probe signal is acquired in the use place. If the moving speed of the magnetic body is different, the interval (sampling pitch) of the measurement points of the detection signal of the magnetic body changes. In addition, for example, when a magnetic body is used in an elevator or the like, a load may be applied to the magnetic body to locally elongate the magnetic body. When the magnetic material is locally elongated, the interval (sampling pitch) between the measurement points of the probe signal of the magnetic material also changes. Therefore, in order to estimate the deterioration state of the magnetic substance with high accuracy, it is preferable to perform correction for performing the position alignment of the detection signal and correction for the difference in the sampling pitch due to the difference in the moving speed or the local elongation of the magnetic substance.

Therefore, if the configuration is such that the detection signal is acquired immediately after the magnetic material starts to be used at a place where the magnetic material is actually used, the position alignment of the detection signal and the correction of the sampling pitch which are suitable for the actual use environment can be performed by using the magnetic material information at the time of manufacture (before installation at the place of use) and the magnetic material information immediately after the start of use. As a result, the accuracy of estimating the deterioration state of the magnetic substance by the server can be improved. Further, since the probe signal is acquired immediately after the start of use, the number of acquisition times of the probe signal before the periodic inspection can be increased as compared with a configuration in which the probe signal is acquired immediately after the start of use without acquiring the probe signal but before and after the magnetic body is installed in the place of use. As a result, the time when the deterioration state of the magnetic material has changed can be grasped in more detail. Further, since the detection signal is acquired immediately after the start of use, for example, when the elevator is used, it is possible to predict the cutting of the magnetic body due to the local elongation of the magnetic body which occurs when the movement between specific floors is large or the like, by comparing the deterioration state of the magnetic body before the start of use.

In the magnetic substance management system according to the first aspect, the magnetic substance is preferably a wire rope. With such a configuration, it is possible to provide a magnetic substance management system that can suppress a decrease in accuracy of the state determination of the wire rope.

In this case, it is preferable that the identifier of the magnetic material includes an identifier for identifying a portion cut to a predetermined length when the wire rope is manufactured. With this configuration, it is possible to easily grasp at which position of the wire rope before being cut into a predetermined length the wire rope cut into a predetermined length is, and therefore, even when the wire rope is used after being cut into a predetermined length after manufacture, it is possible to easily acquire the magnetic material information of the wire rope after being cut. As a result, by acquiring the detection signal after the use of the wire rope cut to a predetermined length is started, it is possible to easily grasp the change in the deterioration state of the wire rope.

A magnetic substance management method of a second aspect of the present invention includes the steps of: acquiring a first detection signal based on a magnetic field or a change in the magnetic field of a magnetic body at a factory location of the magnetic body; acquiring a second detection signal of the magnetic body at a place where the magnetic body is used in the same manner as the manner of acquiring the first detection signal; storing first magnetic substance information obtained by associating the first detection signal with an identifier of a magnetic substance in a server; storing second magnetic substance information obtained by associating the second detection signal with the identifier of the magnetic substance in a server; and estimating a deterioration state of the magnetic body based on at least the first magnetic body information and the second magnetic body information.

As described above, the magnetic substance management method according to the second aspect of the present invention includes the steps of: acquiring a first detection signal at a delivery place of a magnetic body; acquiring a second detection signal of the magnetic body at a place where the magnetic body is used in the same manner as the manner of acquiring the first detection signal; storing the first magnetic information to a server; storing the second magnetic information to a server; and estimating a deterioration state of the magnetic body based on at least the first magnetic body information and the second magnetic body information. Thus, it is possible to provide a magnetic substance management method that can suppress a decrease in the quality of the accumulated measurement data and can suppress a decrease in the accuracy of the state determination of the magnetic substance, as in the magnetic substance management system of the first aspect.

ADVANTAGEOUS EFFECTS OF INVENTION

According to the present invention, as described above, there can be provided a magnetic material management system and a magnetic material management method as follows: the degradation of the quality of the accumulated measurement data can be suppressed, and the degradation of the accuracy of the state determination of the magnetic body can be suppressed.

Drawings

Fig. 1 is a schematic diagram showing the overall configuration of the magnetic substance management system of the first embodiment.

Fig. 2 is a schematic view (a) showing an example of arrangement of the first magnetic substance inspection device at a factory site and a schematic view (B) showing an example of arrangement of the second magnetic substance inspection device at a use site.

Fig. 3 is a diagram for explaining the configuration of the probe unit and the magnetic field applying unit of the first magnetic substance inspection device and the second magnetic substance inspection device according to the first embodiment.

Fig. 4 is a block diagram showing a control configuration of the first magnetic substance inspection device and the second magnetic substance inspection device according to the first embodiment.

Fig. 5 is a diagram showing a waveform of the first detection signal.

Fig. 6 is a diagram showing a waveform of the second detection signal.

Fig. 7 is a schematic diagram showing a differential waveform.

Fig. 8 is a schematic diagram (a) of the first detection signal, a schematic diagram (B) of the second detection signal, and a schematic diagram (C) of the differential waveform in the case where the degradation state of the magnetic substance is not changed.

Fig. 9 is a schematic diagram (a) of the first detection signal, a schematic diagram (B) of the second detection signal, and a schematic diagram (C) of the differential waveform when the degradation state of the magnetic substance changes.

Fig. 10 is a schematic view (a) showing an example of the first magnetic substance information, a schematic view (B) showing an example of the second magnetic substance information, and a schematic view (C) showing an example of the magnetic substance degradation information.

Fig. 11 is a schematic diagram for explaining the exchange of information between the server and the magnetic substance inspection device.

Fig. 12 is a flowchart for explaining a process of estimating a deterioration state of a magnetic substance by the magnetic substance management system according to the first embodiment.

Fig. 13 is a flowchart for explaining a process of transmitting degradation information by the magnetic substance management system according to the first embodiment.

Fig. 14 is a schematic diagram showing the overall configuration of the magnetic substance management system of the second embodiment.

Fig. 15 is schematic views (a) to (C) for explaining the magnetic field applying unit according to the first modification.

Fig. 16 is schematic views (a) to (F) for explaining a probe unit according to a second modification.

Detailed Description

Hereinafter, embodiments embodying the present invention will be described based on the drawings.

[ first embodiment ]

A configuration of a magnetic substance management system 100 according to a first embodiment of the present invention will be described with reference to fig. 1 to 4.

(configuration of magnetic substance management System)

First, a configuration of a magnetic substance management system 100 according to a first embodiment will be described with reference to fig. 1.

As shown in fig. 1, the magnetic substance management system 100 includes a first magnetic substance inspection device 1, a second magnetic substance inspection device 2, a server 3, a first transmission unit 4, and a second transmission unit 5.

The first magnetic substance inspection device 1 is configured to acquire the probe signal DS (first probe signal DS1) based on the magnetic field or the change in the magnetic field of the magnetic substance MM at the factory location of the magnetic substance MM (see fig. 5). The configuration of the first magnetic substance inspection device 1 for acquiring the detection signal DS will be described in detail later. In the present embodiment, the shipping location includes a manufacturing factory for manufacturing the magnetic material MM, a storage warehouse for storing the magnetic material MM after manufacturing the magnetic material MM, and the like. The magnetic material MM inspected by the first magnetic material inspection device 1 is a wire rope W. The wire rope W is an example of the "magnetic body" in the claims.

The second magnetic substance inspection device 2 is configured to: the probe signal DS (the second probe signal DS2 (see fig. 6)) is acquired at the use location of the wire rope W in the same manner as the first magnetic substance inspection device 1 that acquires the probe signal DS of the wire rope W. The details of acquisition of the detection signal DS by the second magnetic substance inspection device 2 will be described later. In the present embodiment, the place of use is a place (equipment such as machinery, equipment, infrastructure equipment, etc.) where the wire rope W is installed.

The first transmitter 4 is configured to transmit first magnetic material information 10 (see fig. 10 a) to the server 3, the first magnetic material information 10 being information obtained by associating the probe signal DS acquired by the first magnetic material inspection device 1 with the ID of the wire rope W. In the first embodiment, the first transmitter 4 is included in the first magnetic material inspection device 1 and configured to transmit the first magnetic material information 10 to the server 3 via the network N. In the first embodiment, the first transmitter 4 includes, for example, a transmitter and is configured to be wirelessly connected to the network N. Further, the ID is a unique number, symbol, or code made of a combination thereof assigned to each wire rope W. The association of the probe signal DS with the ID of the wire rope W means that one ID is assigned to one wire rope W to associate the wire ropes W and the ID in a one-to-one relationship. The ID is an example of an "identifier" in the claims.

The ID of the wire rope W includes a sub number ID for identifying a portion cut to a predetermined length when the wire rope W is manufactured. The sub number ID is an example of "an identifier for identifying a cut portion" in the claims.

The second transmitter 5 is configured to transmit second magnetic material information 11 (see fig. 10B) to the server 3, the second magnetic material information 11 being information obtained by associating the probe signal DS acquired by the second magnetic material inspection device 2 with the ID of the wire rope W. In the first embodiment, the second transmitter 5 is included in the second magnetic material inspection device 2 and configured to transmit the second magnetic material information 11 to the server 3 via the network N. In the first embodiment, the second transmission unit 5 includes, for example, a transmitter and is configured to be wirelessly connected to the network N.

The server 3 includes a control unit 30, a storage unit 31, a deterioration information transmitting unit 32, and a magnetic material information acquiring unit 33. The server 3 is connected to the network N. The first magnetic substance inspection device 1 and the second magnetic substance inspection device 2 are also connected to the network N. Therefore, the server 3 and the first and second magnetic material inspection devices 1 and 2 transmit and receive information via the network N.

The control unit 30 is configured to estimate the deterioration state of the wire rope W based on the first magnetic material information 10 and the second magnetic material information 11. The control unit 30 is configured to store the magnetic substance information (the first magnetic substance information 10 and the second magnetic substance information 11) transmitted to the server 3 in the storage unit 31. The control Unit 30 includes, for example, a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and the like. The details of the process of the control unit 30 for estimating the deterioration state of the wire rope W will be described later.

The storage unit 31 stores a program to be executed by the control unit 30. The storage unit 31 includes a unique information storage unit 31a, a degradation information storage unit 31b, and an abnormality information storage unit 31 c. The unique information storage unit 31a is configured to store the first magnetic material information 10 as unique information of the wire rope W. The deterioration information storage unit 31b is configured to store the second magnetic material information 11 as deterioration information of the wire rope W. The deterioration information storage unit 31b is configured to store magnetic substance deterioration information 12 (see fig. 10) described later. The abnormality information storage unit 31c is configured to store abnormality information 13 (see fig. 9) described later. The storage unit 31 includes, for example, a nonvolatile memory, an HDD (hard disk drive), an SSD (solid state drive), and the like. The unique information storage unit 31a, the degradation information storage unit 31b, and the abnormality information storage unit 31c include a database of unique information, a database of degradation information, and a database of abnormality information 13, respectively, which are constructed in the storage unit 31.

The deterioration information transmitting unit 32 is configured to transmit the deterioration information (magnetic material deterioration information 12) of the wire rope W including at least the differential waveform DW (see fig. 9) in response to a request from at least one of the first magnetic material inspection device 1 and the second magnetic material inspection device 2. The degradation information transmitting unit 32 includes, for example, an input/output interface.

The magnetic material information acquisition unit 33 is configured to acquire the first magnetic material information 10 and the second magnetic material information 11 transmitted from the first magnetic material inspection device 1 and the second magnetic material inspection device 2 via the network N. The magnetic material information acquisition unit 33 includes, for example, an input/output interface.

(delivery site and use site)

Next, an example of a factory location where the first magnetic substance inspection device 1 is disposed and an example of a use location where the second magnetic substance inspection device 2 is disposed will be described with reference to fig. 2. In the first embodiment, the shipping location and the use location are different locations.

In the example shown in fig. 2 (a), the first magnetic substance inspection device 1 is disposed in a manufacturing plant of the wire rope W at a factory where the wire rope W is shipped. Specifically, the first magnetic substance inspection device 1 is disposed in a manufacturing plant to inspect a wire rope W formed by twisting a plurality of wire members WS. The wire member WS is a core material constituting the wire rope W, a wire material, and a member (strand) formed by twisting the wire material.

As shown in fig. 2 (a), the first magnetic substance inspection device 1 is disposed between a twisting mechanism M1 for twisting a plurality of wire members WS and a winding drum M2 for winding the wire rope W, and acquires a detection signal DS of the wire rope W before being wound by the winding drum M2. That is, the first magnetic substance inspection device 1 acquires the detection signal DS of the wire rope W in a state before use (unused). The wire rope W is cut to a predetermined length, and is transported to a place of use in a state of being wound around a winding drum different from the winding drum M2 after being cut.

In the example shown in fig. 2 (B), the second magnetic substance inspection device 2 is disposed in an elevator E at a place where the wire rope W is used. Specifically, the second magnetic substance inspection device 2 is disposed in the elevator E to inspect the wire rope W provided in the elevator E. The elevator E is provided with: a car portion E1; a hoist E2 that winds up the wire rope W to raise and lower the car portion E1; and a position sensor E3 that detects the position of the car portion E1 (wire rope W). In the elevator E, since the wire rope W is moved by the hoisting machine E2, the inspection is performed along with the movement of the wire rope W in a state where the second magnetic substance inspection device 2 is fixed. In the example shown in fig. 2B, the second magnetic substance inspection device 2 inspects the wire rope W while relatively moving in the extending direction (X direction) of the wire rope W along the surface of the wire rope W. That is, the second magnetic substance inspection device 2 acquires the detection signal DS of the wire rope W in a state of being installed after (during use in) the elevator E. The second magnetic substance inspection device 2 is configured to acquire the detection signal DS immediately after being installed in the use place (elevator E).

In the first embodiment, the magnetic substance management system 100 acquires the deterioration state of one wire rope W that is transported from a factory location to a use location and installed in an elevator E over time.

(Structure of Steel wire rope)

The wire rope W is a magnetic body MM made of a long material extending in the X direction. As shown in fig. 2 (a), a wire rope W is formed by stranding wire members WS having magnetism. In order to prevent the wire rope W from being cut due to deterioration, the deterioration state (presence or absence of damage, etc.) of the wire rope W is monitored. Further, the wire rope W having a high risk of occurrence of cutting or the like due to a deterioration state that is worse than a predetermined state is replaced before occurrence of cutting or the like.

(first magnetic substance inspecting device and second magnetic substance inspecting device)

Next, the configurations of the first magnetic material inspection device 1 and the second magnetic material inspection device 2 will be described with reference to fig. 3 and 4.

The first magnetic substance inspection device 1 and the second magnetic substance inspection device 2 include a magnetic field applying unit 6, a detecting unit 7, an output unit 86 (see fig. 4), and a deterioration information acquiring unit 87 (see fig. 4). In the first embodiment, as shown in fig. 3, the first magnetic substance inspection device 1 and the second magnetic substance inspection device 2 are configured to detect a change in the magnetic field (total magnetic flux) of the wire rope W by the detection coil 70.

(Structure of magnetic field applying part)

As shown in fig. 3, the magnetic field applying unit 6 is configured to: before the detection signal DS is detected by the detector 7, the magnetization direction of the wire rope W is adjusted by applying a magnetic field to the wire rope W in a predetermined direction. The magnetic field applying unit 6 includes: a first magnetic field applying part including magnets 61 and 62; and a second magnetic field applying part including magnets 63 and 64. The magnets 61, 62, 63, and 64 are each constituted by a permanent magnet, for example.

The first magnetic field applying unit (magnets 61 and 62) is disposed on one side (the X1 direction side) of the detecting unit 7 in the extending direction of the wire rope W. Further, the second magnetic field applying unit (magnets 63 and 64) is disposed on the other side (the X2 direction side) of the extending direction of the wire rope W with respect to the detecting unit 7. In the example shown in fig. 3, the magnets 61 and 62 are arranged such that mutually different poles of the S pole and the N pole face each other. In addition, the magnets 63 and 64 are also arranged such that mutually different poles of the S pole and the N pole face each other. Note that, in the example shown in fig. 3, for convenience, one pole of the magnet 61(62, 63, and 64) is shown with hatching.

Further, the magnetic field applying unit 6 is configured to: a magnetic field is applied to the wire rope W so that the magnetization directions of the wire rope W coincide with each other at the time of inspection of the wire rope W at a factory site and at the time of inspection of the wire rope W at a use site. Specifically, the magnetic field applying units 6 provided in the first magnetic substance inspection device 1 and the second magnetic substance inspection device 2 are configured to apply magnetic fields to the wire rope W in the same direction. Therefore, the magnetic field applying unit 6 provided in the first magnetic substance inspection device 1 and the second magnetic substance inspection device 2 can align the magnetization directions of the wire rope W at the time of inspection of the wire rope W at the factory site and at the time of inspection of the wire rope W at the use site.

(Structure of Probe section)

The detector 7 includes a detection coil 70 for detecting a change in the total magnetic flux of the wire rope W, and is configured to output a detection signal DS of the wire rope W whose magnetization direction is adjusted by the magnetic field applicator 6. The detection coil 70 has receiving coils 71 and 72, and includes a pair of differential coils 74 for acquiring differential values of the detection signal DS received by the receiving coils 71 and 72. As shown in fig. 3, the search coil 70 (differential coil 74) and the excitation coil 73 are wound around the wire rope W in the extending direction (X direction) by a plurality of turns around the extending direction of the wire rope W as a central axis. Therefore, a surface on which the lead portion around which the search coil 70 and the excitation coil 73 are wound is substantially orthogonal to the extending direction (X direction) of the wire rope W. The wire rope W passes through the inside of the detection coil 70 and the excitation coil 73. In addition, the detection coil 70 is disposed inside the excitation coil 73 in the Y direction. The receiver coils 71 and 72 are provided inside the detection section 7, and the receiver coil 71 of the receiver coils 71 and 72 is arranged on the X1 direction side. Further, the receiving coil 72 of the receiving coils 71 and 72 is disposed on the X2 direction side. The detection coil 70 is configured to detect the detection signal DS in a state where it is not in contact with the wire rope W.

The detection coil 70 is configured to detect a change in the magnetic field of the wire rope W in the X direction as an inspection object by a pair of receiving coils 71 and 72. That is, the detection coil 70 detects a change in the total magnetic flux in the X direction with respect to the wire rope W to which the magnetic field is applied by the exciting coil 73. The detection coil 70 is configured to output the detected change in the magnetic field of the wire rope W in the X direction. The search coil 70 is configured to acquire and output a change in the magnetic field of the wire rope W as a voltage value.

The exciting coil 73 excites the magnetized state of the wire rope W. Specifically, the excitation coil 73 generates an alternating magnetic field by passing an excitation alternating current through the excitation coil 73. The excitation coil 73 is configured to: inside the excitation coil 73, an ac magnetic field generated by an excitation ac current is applied to the wire rope W, thereby exciting the magnetization state of the wire rope W.

When the wire rope W has a damage (such as a wire break), the total magnetic flux (a value obtained by multiplying the magnetic field by the magnetic permeability and the area) of the wire rope W is smaller in a portion having the damage (such as the wire break) than in a portion having no damage (such as the wire break). As a result, for example, when the receiving coil 71 is located at a position where there is damage (disconnection or the like), the absolute value of the difference between the detection voltages obtained by the detection coil 70 (difference value of the detection signal DS) becomes large because the magnetic flux passing through the receiving coil 71 changes compared with the magnetic flux passing through the receiving coil 72. On the other hand, the detection signal DS of the portion having no damage (disconnection or the like) is substantially zero. In this way, a clear signal (signal having a good S/N ratio) indicating the presence of a damage (disconnection or the like) is detected by the detection coil 70. Thereby, the electronic circuit unit 8 can detect the presence of damage (disconnection or the like) to the wire rope W based on the value of the probe signal DS.

In the first embodiment, the wire rope W is configured to move relative to the first magnetic substance inspection device 1 and the second magnetic substance inspection device 2 at a factory site and a use site. Therefore, the detection signal DS of the wire rope W can be acquired without moving the first magnetic substance inspection device 1 and the second magnetic substance inspection device 2. For example, when the wire rope W does not move, the first magnetic substance inspection device 1 and the second magnetic substance inspection device 2 are moved, whereby the first magnetic substance inspection device 1 and the second magnetic substance inspection device 2 can acquire the detection signal DS of the wire rope W.

(Structure of magnetic substance testing part)

As shown in fig. 4, the first magnetic substance inspection device 1 and the second magnetic substance inspection device 2 include a probe unit 7 and an electronic circuit unit 8. The detection section 7 includes a detection coil 70 and an excitation coil 73. The electronic circuit section 8 includes an inspection control section 80, a reception I/F81, a storage section 82, an excitation I/F83, a power supply circuit 84, a position information acquisition section 85, an output section 86, and a degradation information acquisition section 87.

The inspection control unit 80 of the electronic circuit unit 8 shown in fig. 4 is configured to control each unit of the first magnetic substance inspection device 1 and the second magnetic substance inspection device 2. Specifically, the inspection control unit 80 includes a processor such as a CPU, a memory, an AD converter, and the like.

The inspection control unit 80 is configured to acquire the detection signal DS based on the total magnetic flux detected by the detection coil 70. The inspection control unit 80 is configured to receive the detection signals DS detected by the pair of differential coils 74 (the receiving coils 71 and 72), and output the detection signals DS to the server 3 via the output unit 86. The inspection control unit 80 is configured to control the excitation of the excitation coil 73.

The inspection control unit 80 is configured to acquire the position information of the probe unit 7 (probe coil 70) in the wire rope W via the position information acquisition unit 85. The inspection control unit 80 acquires the position information of the detection unit 7 from, for example, a position sensor E3 of the elevator E.

The storage unit 82 is configured to store the detection information obtained by the inspection control unit 80 associating the position information at the time of detecting the detection signal DS of the wire rope W with the detection signal DS of the wire rope W detected by the detection coil 70 (differential coil 74). The storage unit 82 can be configured by, for example, a flash memory, an HDD, an SSD, or the like. The inspection control unit 80 is configured to transmit probe information to the server 3 via the output unit 86.

The reception I/F81 is configured to receive a signal (voltage value) based on the total magnetic flux from the search coil 70 under the control of the inspection control unit 80 and transmit the signal to the inspection control unit 80. Specifically, the reception I/F81 includes an amplifier. The reception I/F81 is configured to amplify a signal based on the total magnetic flux of the search coil 70 and transmit the amplified signal to the inspection control unit 80.

The excitation I/F83 is configured to control power supply to the excitation coil 73 under the control of the inspection control unit 80. Specifically, the excitation I/F83 controls the supply of electric power from the power supply circuit 84 to the excitation coil 73 based on a control signal from the inspection control unit 80.

The position information acquiring unit 85 is configured to acquire the position information of the detecting unit 7 when the detecting unit 7 detects the detection signal DS of the wire rope W under the control of the inspection control unit 80. The position information acquiring unit 85 acquires the position information of the detecting unit 7 acquired by the position sensor E3 of the elevator E. The position information acquisition unit 85 includes, for example, a serial communication port. Here, in order to estimate the deterioration state of the wire rope W based on the probe signal DS before the wire rope W is installed at the use place and the probe signal DS after the wire rope W is actually placed at the use place, it is necessary to align the probe signals DS. The moving speed of the wire rope W when the probe signal DS is acquired before the wire rope W is installed in the use location after the start of use may be different from the moving speed of the wire rope W when the probe signal DS is acquired in the use location. If the wire rope W moves at different speeds, the interval (sampling pitch) between the measurement points of the detection signal DS of the wire rope W changes. Further, for example, when the wire rope W is used in the elevator E or the like, a load may be applied to the wire rope W to locally extend the wire rope W. When the wire rope W is locally elongated, the interval (sampling pitch) between the measurement points of the probe signal DS of the wire rope W also changes. Therefore, in order to estimate the deterioration state of the wire rope W with high accuracy, it is preferable to perform correction for performing the alignment of the probe signal DS and correction for the difference in the sampling pitch due to the difference in the moving speed or the local elongation of the wire rope W. Even when the moving speed of the wire rope W varies in different environments or when a load is applied to the wire rope W and the wire rope W is locally elongated, the position information acquiring unit 85 is provided to align the inspection data.

The output unit 86 is configured to output the detection signal DS detected by the detection unit 7 to the server 3 via the network N. The output section 86 includes, for example, an input/output interface.

The deterioration information acquiring unit 87 is configured to acquire information on the deterioration state of the wire rope W from the server 3 via the network N. The degradation information acquisition unit 87 includes, for example, an input/output interface.

(Probe Signal and differential waveform)

Next, the first probe signal DS1, the second probe signal DS2, and the differential waveform DW will be described with reference to fig. 5 to 7.

Fig. 5 is a schematic diagram showing a graph G1 of the first probe signal DS1 acquired by the first magnetic substance inspection device 1. In the graph G1, the horizontal axis represents the positional information of the first magnetic substance inspection device 1 (probe coil 70). In the graph G1, the vertical axis represents the signal strength of the probe signal DS (first probe signal DS 1).

Fig. 6 is a schematic diagram showing a graph G2 of the second probe signal DS2 acquired by the second magnetic substance inspection device 2. In the graph G2, the horizontal axis represents the positional information of the second magnetic substance inspection device 2 (probe coil 70). In the graph G2, the vertical axis represents the signal strength of the probe signal DS (second probe signal DS 2).

As shown in fig. 5 and 6, the probe signal DS (the first probe signal DS1 and the second probe signal DS2) is information including position information of the probe unit 7 when the probe signal DS is detected and signal strength of the probe signal DS.

In the first embodiment, the server 3 acquires the differential waveform DW as shown in a graph G3 shown in fig. 7 based on the first probe signal DS1 and the second probe signal DS 2. Specifically, the server 3 acquires the differential waveform DW by acquiring the difference between the first probe signal DS1 and the second probe signal DS 2. In the example shown in fig. 7, since the value of the graph G3 is substantially 0 (zero), the thickness of the line of the graph G3 is shown at the same position as the horizontal axis of the graph G3, with the thickness of the horizontal axis of the graph G3. The first magnetic material inspection device 1 and the second magnetic material inspection device 2 are configured to perform sensitivity correction, respectively. Specifically, the correction is performed such that the vertical axis of the graph G1 coincides with the vertical axis of the graph G2.

(estimation of degradation State)

Next, a configuration in which the control unit 30 estimates the deterioration state of the wire rope W according to the first embodiment will be described with reference to fig. 8 and 9.

The examples shown in fig. 8 (a) and 8 (B) are examples in which the deterioration state of the wire rope W does not change from the time of the inspection by the first magnetic material inspection device 1 to the time of the inspection by the second magnetic material inspection device 2.

Since each of the first magnetic substance inspection device 1 and the second magnetic substance inspection device 2 has the magnetic field applying unit 6, noise generated in the detection signal DS can be suppressed. Therefore, the reproducibility of the probe signal DS acquired by the first magnetic substance inspection device 1 and the second magnetic substance inspection device 2 is increased. The high reproducibility of the probe signal DS means that the probe signal DS obtained when the same wire rope W is inspected by the first magnetic material inspection device 1 and the second magnetic material inspection device 2 has a high degree of conformity in shape.

As described above, the first magnetic substance inspection device 1 and the second magnetic substance inspection device 2 have the following configurations: the wire rope W detection device is provided with a magnetic field applying unit 6, an exciting coil 73, and a differential coil 74, and acquires a detection signal DS of the wire rope W by the full magnetic flux method. Therefore, the probe signal DS acquired by the first magnetic material inspection device 1 and the second magnetic material inspection device 2 has higher reproducibility than the conventional device, and therefore, if the deterioration state of the wire rope W does not change during the inspection by the first magnetic material inspection device 1 and the inspection by the second magnetic material inspection device 2, the waveform of the first probe signal DS1 is substantially the same as the waveform of the second probe signal DS 2.

Therefore, when the deterioration state of the wire rope W does not change, the server 3 obtains a difference waveform DW obtained by obtaining the difference between the first probe signal DS1 and the second probe signal DS2, and the difference waveform DW becomes a linear graph having a substantially constant value as shown in a graph G3 shown in fig. 8 (C).

Fig. 9 (a) is a schematic diagram of a probe signal DS (first probe signal DS1) when the first magnetic substance inspection device 1 performs inspection. Fig. 9 (B) is a schematic diagram of the probe signal DS (second probe signal DS2) when the second magnetic substance inspection device 2 performs the inspection. The examples shown in fig. 9 (a) and 9 (B) are examples in which the deterioration state of the wire rope W changes from the time of the inspection by the first magnetic material inspection device 1 to the time of the inspection by the second magnetic material inspection device 2.

As shown in fig. 9 (a) and 9 (B), since the deterioration state of the wire rope W changes when the first magnetic substance inspection device 1 performs the inspection and when the second magnetic substance inspection device 2 performs the inspection, the shapes of the first probe signal DS1 and the second probe signal DS2 do not match. Therefore, the difference waveform DW acquired based on the difference between the first probe signal DS1 and the second probe signal DS2 has a shape having a peak P due to deterioration of the wire rope W as shown in fig. 9 (C).

The server 3 can acquire a change in the deterioration state of the wire rope W based on a change in the size (intensity) of the peak P generated in the differential waveform DW. The server 3 can determine whether or not the wire rope W is damaged based on the magnitude (intensity) of the peak P generated in the differential waveform DW. For example, when the magnitude (intensity) of the peak P generated in the differential waveform DW exceeds a predetermined threshold, the server 3 can determine that the wire rope W is damaged. The server 3 is configured to estimate the deterioration state of the wire rope W based on the first magnetic material information 10 and the second magnetic material information 11, in which the probe signal DS acquired immediately after installation in the use place (elevator E) is associated with the ID of the wire rope W.

The server 3 can determine the type of damage occurring in the wire rope W based on the shape of the waveform of the second probe signal DS 2. Specifically, since the shape of the waveform of the probe signal DS differs depending on the damage generated in the wire rope W, the server 3 can determine the type of damage generated in the wire rope W based on the shape of the waveform of the probe signal DS. The server 3 can determine, for example, disconnection, kinking, and twisting disorder of the wire rope W. The kink in the wire rope W means a state in which plastic deformation such as torsion or multi-stage bending that cannot be recovered occurs due to improper handling when the wire rope W is drawn out or drawn out from the winding drum M2 or the like. The disarray in twisting of the wire rope W means a state in which the twisted state of the wire rope W is different from a normal portion due to, for example, unintentional cross twisting of a part of the wire members WS when twisting the wire members WS.

As a method for determining the type of the damage of the wire rope W based on the shape of the waveform of the second probe signal DS2, for example, there is machine learning, shape fitting with a model waveform of the damage of the wire rope W, and the like.

Since the first magnetic substance inspection device 1 and the second magnetic substance inspection device 2 acquire the probe signal DS in the same manner, the reproducibility of the probe signal DS is high, and the peak P such as a disconnection of the wire rope W can be detected with high accuracy. Therefore, the server 3 can detect the damage of the wire rope W, the type of damage, and the like with high accuracy.

(exchange of information between magnetic substance inspection device and Server)

Next, information transmitted and received between the first magnetic material inspection device 1 and the second magnetic material inspection device 2 and the server 3 will be described with reference to fig. 10 and 11.

Fig. 10 (a) shows an example of the first magnetic material information 10 transmitted from the first magnetic material inspection device 1 to the server 3.

The first magnetic material inspection device 1 is configured to transmit first magnetic material information 10 to the server 3, the first magnetic material information 10 including the ID of the wire rope W, product information of the wire rope W, the date and time when the first probe signal DS1 was acquired, and the first probe signal DS 1. The product information of the wire rope W includes, for example, the length of the wire rope W and the diameter of the wire rope W.

Fig. 10 (B) shows an example of the second magnetic material information 11 transmitted from the second magnetic material inspection device 2 to the server 3.

The second magnetic material inspection device 2 is configured to transmit the second magnetic material information 11 to the server 3, the second magnetic material information 11 including the ID of the wire rope W, the date and time when the second probe signal DS2 was acquired, and the second probe signal DS 2.

As shown in fig. 10 (a) and 10 (B), the first magnetic information 10 and the second magnetic information 11 have different information contents.

Fig. 10 (C) shows an example of magnetic material deterioration information 12 transmitted from the server 3 to at least one of the first magnetic material inspection device 1 and the second magnetic material inspection device 2.

The server 3 is configured to transmit magnetic material deterioration information 12 to at least one of the first magnetic material inspection device 1 and the second magnetic material inspection device 2, and the magnetic material deterioration information 12 includes the ID of the wire rope W, the acquisition date and time of the probe signal DS when the differential waveform DW was acquired, and the differential waveform DW. In the first embodiment, the server 3 is configured to transmit the magnetic substance degradation information 12 in response to a request from at least one of the first magnetic substance information 10 and the second magnetic substance inspection device 2.

In the first embodiment, the server 3 is configured to: when estimating the deterioration state of the wire rope W, the waveform information of the probe signal DS (second probe signal DS2) in the second magnetic material information 11 when it is estimated that the wire rope W is damaged (broken, etc.) is stored as the abnormality information 13.

Fig. 11 is an example of transmission and reception of information between the first magnetic material inspection device 1 and the second magnetic material inspection device 2 and the server 3 in time series.

As shown in fig. 11, first, the first magnetic material inspection device 1 transmits the first magnetic material information 10 acquired when the wire rope W is manufactured (t1) to the server 3. The server 3 stores the transmitted first magnetic information 10 in the unique information storage unit 31 a. The information stored in the unique information storage unit 31a is the first magnetic substance information 10 transmitted to the server 3. Specifically, the server 3 stores the first probe signal DS1 and the product information of the wire rope W included in the first magnetic substance information 10 as unique information. Note that the unique information of the wire rope W refers to the waveform shape of the probe signal DS unique to each wire rope W whose shape does not match the shape of another wire rope W when the wire rope W is measured by the inspection device of the same type.

Since the probe signal DS (first probe signal DS1) acquired by the first magnetic substance inspection device 1 has high reproducibility, the shape of the waveform of the probe signal DS (first probe signal DS1) of the wire rope W can be processed as the unique information of the wire rope W by the fingerprint method.

Next, the first magnetic material inspection device 1 transmits the first magnetic material information 10 acquired at the time of shipment of the wire rope W (t2) to the server 3. Further, when the first magnetic material information 10 is transmitted for the second time or later, since the unique information of the wire rope W is already stored in the unique information storage unit 31a, the ID of the wire rope W, the data acquisition date and time, and the first probe signal DS1 may be included as the first magnetic material information 10, similarly to the second magnetic material information 11. The server 3 stores the transmitted first magnetic information 10 in the degradation information storage unit 31 b. At this time, if there is a request from the first magnetic substance inspection device 1, the server 3 transmits the magnetic substance degradation information 12 at the time of manufacture (t1) and at the time of shipment (t2) to the first magnetic substance inspection device 1. After that, the wire rope W is transported to the place of use.

Next, when the use of the wire rope W is started (t3), the second magnetic material inspection device 2 transmits the acquired second magnetic material information 11 to the server 3. The server 3 stores the transmitted second magnetic information 11 in the degradation information storage unit 31 b. At this time, if there is a request from the second magnetic substance inspection device 2, the server 3 transmits the magnetic substance degradation information 12 at the time of shipment (t2) and at the time of start of use (t3) to the second magnetic substance inspection device 2.

Thereafter, the second magnetic material inspection device 2 transmits the acquired second magnetic material information 11 to the server 3 at the time of the periodic inspection 1 (t4), the periodic inspection 2 (t5), and the periodic inspection n (tn) for acquiring information on the deterioration state of the wire rope W. The server 3 stores the transmitted second magnetic information 11 in the degradation information storage unit 31 b. The server 3 transmits the magnetic material deterioration information 12 to the second magnetic material inspection device 2 in response to a request from the second magnetic material inspection device 2.

In the first embodiment, as described above, the server 3 is configured to acquire the difference waveform DW from the probe signal DS at the time of the previous examination.

When the wire rope W is manufactured, the server 3 stores the first magnetic material information 10 in the unique information storage unit 31a as unique information of the wire rope W. After that, the first magnetic material information 10 and the second magnetic material information 11 acquired at each inspection are stored in the degradation information storage unit 31 b. That is, since the server 3 stores the degradation information of the wire rope W as history information, the magnetic substance management system 100 can ensure traceability (traceability) of the wire rope W. Therefore, it is possible to acquire a change in the deterioration state of the wire rope W that occurs during each measurement period, and to grasp at which stage an abnormality has occurred in the wire rope W.

Further, since the server 3 stores the waveform information of the probe signal DS (second probe signal DS2) in the second magnetic material information 11 when the wire rope W is damaged as the abnormality information 13, it is possible to store the waveform (second probe signal DS2) when the change in the deterioration of the wire rope W and the abnormality occur. Therefore, since the server 3 can store the history information and the abnormality information 13 for the plurality of wire ropes W, it is possible to grasp the sign of damage occurring in a certain wire rope W based on the history information and the abnormality information 13 of the plurality of wire ropes W. Further, by comprehensively analyzing the information about the load applied to the wire rope W and other information, it is possible to grasp a warning with higher accuracy. Further, the algorithm for estimating the deterioration state of the wire rope W can be updated based on the plurality of abnormality information 13. For example, when the server 3 estimates the deterioration state of the wire rope W using machine learning, the learning model can be updated because data for machine learning can be accumulated.

In addition, when the server 3 estimates a damage by fitting the model waveform to the shape of the probe signal DS, the waveform shapes in the case where a damage has occurred can be accumulated as the abnormality information 13, and thus the parameters of the model waveform can be optimized. By optimizing the parameters of the model waveform, the server 3 can particularly improve the accuracy of classification of the type of damage of the wire rope W.

(deterioration state estimation processing of magnetic substance management System)

Next, a flow of processing of the magnetic substance management system 100 for estimating the deterioration state of the wire rope W will be described with reference to fig. 12.

In step S1, the first magnetic substance inspection device 1 acquires a first detection signal DS1 based on the magnetic field or the change in the magnetic field of the wire rope W at the factory location of the wire rope W. Thereafter, in step S2, the second magnetic substance inspection device 2 acquires the second probe signal DS2 of the wire rope W at the use location of the wire rope W in the same manner as the first probe signal DS 1. After that, the process advances to step S3.

In step S3, the first magnetic material inspection device 1 stores first magnetic material information 10 in the server 3, the first magnetic material information 10 being information in which the first probe signal DS1 is associated with the ID of the wire rope W. Next, in step S4, the second magnetic material inspection device 2 stores, in the server 3, second magnetic material information 11 in which the second probe signal DS2 is associated with the ID of the wire rope W, the second magnetic material information 11 being information obtained. After that, the process advances to step S5.

In step S5, the server 3 estimates the deterioration state of the wire rope W. Specifically, the server 3 estimates the deterioration state of the wire rope W based on at least the first magnetic substance information 10 and the second magnetic substance information 11. When the wire rope W is damaged, the process proceeds to step S6. When the wire rope W is not damaged, the process is terminated.

In step S6, when the server 3 estimates that the wire rope W has been damaged, the waveform information of the second probe signal DS2 in the second magnetic material information 11 is stored as the abnormality information 13, and the process is terminated. Further, the process of step S3 may be performed after the process of step S1. Further, the process of step S4 may be performed after the process of step S2. In the server 3, if the state of degradation of the wire rope W is estimated before, the process of step S3 and the process of step S4 may be performed at any timing.

(deterioration information Transmission processing of magnetic substance management System)

Next, a process of transmitting the magnetic substance degradation information 12 by the server 3 will be described with reference to fig. 13.

In step S7, the server 3 confirms whether or not a transmission request of the magnetic substance degradation information 12 is received from at least one of the first magnetic substance inspection device 1 and the second magnetic substance inspection device 2. When the transmission request of the magnetic substance degradation information 12 is received, the process proceeds to step S8. If the transmission request of the magnetic substance degradation information 12 is not received, the process of step S7 is repeated.

In step S8, the server 3 transmits the magnetic material deterioration information 12 to the magnetic material inspection device that has transmitted the transmission request of the magnetic material deterioration information 12, and ends the processing.

(Effect of the first embodiment)

In the first embodiment, the following effects can be obtained.

In the first embodiment, as described above, the magnetic substance management system 100 includes: a first magnetic substance inspection device 1 that acquires a detection signal DS based on a magnetic field or a change in the magnetic field of a wire rope W at a factory location of the wire rope W; a second magnetic substance inspection device 2 that acquires a detection signal DS of the wire rope W at a use location of the wire rope W, in the same manner as the first magnetic substance inspection device 1; a server 3 that stores information of the wire rope W; a first transmission unit 4 that transmits, to the server 3, first magnetic material information 10 obtained by associating the probe signal DS acquired by the first magnetic material inspection device 1 with the identifier of the wire rope W; and a second transmitter 5 that transmits second magnetic material information 11 obtained by associating the probe signal DS acquired by the second magnetic material inspection device 2 with the identifier of the wire rope W to the server 3, wherein the server 3 is configured to estimate the deterioration state of the wire rope W based on at least the first magnetic material information 10 and the second magnetic material information 11. Thus, since the measurement data (the first magnetic material information 10 and the second magnetic material information 11) can be acquired at the shipping location and the use location using the first magnetic material inspection device 1 and the second magnetic material inspection device 2 of the same type, not only the measurement data (the second magnetic material information 11) at the use location but also the measurement data (the first magnetic material information 10) at the shipping location can be accumulated. As a result, it is possible to suppress a decrease in the quality of the accumulated measurement data (the first magnetic material information 10 and the second magnetic material information 11), and to suppress a decrease in the accuracy of the state determination of the wire rope W. Further, since time-series data from the factory location to the use location can be acquired, useful data that brings new insights for improving each process such as manufacturing, management, transportation, and installation can be acquired.

In the first embodiment, as described above, the server 3 is configured to estimate the deterioration state of the wire rope W by acquiring the differential waveform DW between the first magnetic material information 10 and the second magnetic material information 11. In this way, the difference waveform DW between the first magnetic material information 10 and the second magnetic material information 11 is obtained, and therefore, a change in the deterioration state of the wire rope W occurring during transportation from a factory location to a use location can be obtained. As a result, since the change in the deterioration state of the wire rope W at the factory, during transportation, and at the place of use can be acquired, traceability (traceability) of the wire rope W can be ensured.

In the first embodiment, as described above, the server 3 is configured to: when estimating the deterioration state of the wire rope W, the waveform information of the probe signal DS in the second magnetic material information 11 when it is estimated that the wire rope W is damaged is stored as the abnormality information 13. Thus, since the abnormality information 13 can be accumulated, the algorithm for estimating the deterioration state of the wire rope W can be updated based on the accumulated abnormality information 13. As a result, the accuracy of estimating the deterioration state of the wire rope W can be improved.

In the first embodiment, as described above, the magnetic material information acquisition unit 33 is further provided, and the magnetic material information acquisition unit 33 transmits the deterioration information of the wire rope W including at least the differential waveform DW in response to a request from at least one of the first magnetic material inspection device 1 and the second magnetic material inspection device 2. Thus, the first magnetic material inspection device 1 and the second magnetic material inspection device 2 can acquire the differential waveform DW by requesting the server 3 from the first magnetic material inspection device 1 and the second magnetic material inspection device 2. As a result, since the transition of the deterioration state of the wire rope W can be grasped based on the differential waveform DW at each of the factory location and the use location, it is possible to grasp at which timing the change in the deterioration state of the wire rope W occurs.

In the first embodiment, as described above, the first transmitter 4 and the second transmitter 5 are included in the first magnetic substance inspection device 1 and the second magnetic substance inspection device 2, and the first transmitter 4 and the second transmitter 5 are configured to transmit at least the first magnetic substance information 10 and the second magnetic substance information 11 to the server 3 via the network N. This allows the first magnetic material information 10 and the second magnetic material information 11 to be directly transmitted from the first magnetic material inspection device 1 and the second magnetic material inspection device 2 to the server 3, and therefore, the configuration of the system can be prevented from being complicated.

In the first embodiment, as described above, the first magnetic material inspection device 1 and the second magnetic material inspection device 2 include: a magnetic field applying unit 6 for adjusting the magnetization direction of the wire rope W before the detection of the detection signal DS; a detector 7 for outputting a detection signal DS whose magnetization direction has been adjusted by the magnetic field applying unit 6; an output unit 86 that outputs a detection signal DS; and a deterioration information acquisition unit 87 that acquires information on the deterioration state of the wire rope W. Thus, the first magnetic substance inspection device 1 and the second magnetic substance inspection device 2 can reduce noise of the detection signal DS by including the magnetic field applying unit 6, and therefore, the accuracy of the detection signal DS can be improved, and the reproducibility of the detection signal DS detected between the devices can be improved. As a result, since the acquired probe signals DS have high reproducibility, even when the first magnetic material inspection device 1 and the second magnetic material inspection device 2, which are different individuals, are used at separate locations, the influence of the individual difference between the first magnetic material inspection device 1 and the second magnetic material inspection device 2 in the probe signals DS can be suppressed, and the respective probe signals DS can be handled in a unified manner.

In the first embodiment, as described above, the magnetic field applying unit 6 is configured to: a magnetic field is applied to the wire rope W so that the magnetization directions of the wire rope W coincide with each other at the time of inspection of the wire rope W at a factory site and at the time of inspection of the wire rope W at a use site. This makes it possible to align the magnetization directions of the wire rope W at the time of inspection of the wire rope W at the factory site and at the time of inspection of the wire rope W at the use site, and to suppress the occurrence of a difference in the detection signal DS other than a change in the deterioration state due to a difference in the magnetization directions of the wire rope W, thereby further improving the reproducibility of the measurement data. As a result, since the reproducibility of the measurement data can be further improved, the quality of the measurement data for estimating the deterioration state of the wire rope W can be further improved.

In the first embodiment, as described above, the second magnetic material inspection device 2 is configured to acquire the probe signal DS immediately after installation in the use place, and the server 3 is configured to estimate the deterioration state of the wire rope W based on the first magnetic material information 10 and the second magnetic material information 11, in which the probe signal DS acquired immediately after installation in the use place is associated with the identifier of the wire rope W, in the second magnetic material information 11. Thus, by acquiring the probe signal DS immediately after the start of use of the wire rope W at a place where the wire rope W is actually used, it is possible to correct the position alignment and the sampling pitch of the probe signal DS suitable for the actual use environment by using the magnetic substance information (first magnetic substance information 10) at the time of manufacture (before installation at the place of use) and the magnetic substance information (second magnetic substance information 11) immediately after the start of use. As a result, the accuracy of estimating the deterioration state of the wire rope W by the server 3 can be improved. Further, since the probe signal DS is acquired immediately after the start of use, the number of times of acquiring the probe signal DS before the periodic inspection can be increased as compared with a configuration in which the probe signal DS is acquired immediately after the start of use without acquiring the probe signal DS and before and after the wire rope W is installed in the place of use. As a result, the time when the deterioration state of the wire rope W has changed can be grasped in more detail. Further, since the detection signal DS is acquired immediately after the start of use, for example, when the wire rope W is used in the elevator E, it is possible to predict the cutting of the wire rope W due to the local elongation of the wire rope W that occurs when the movement between specific floors is large or the like, by comparing the deterioration state of the wire rope W before the start of use.

In the first embodiment, as described above, the magnetic body MM is the wire rope W. This makes it possible to provide the magnetic material management system 100 that can suppress a decrease in the accuracy of the state determination of the wire rope W.

In the first embodiment, as described above, the identifier of the magnetic material MM includes the sub number ID for identifying the portion cut to a predetermined length when the wire rope W is manufactured. Accordingly, it is possible to easily grasp the position of the wire rope W before the wire rope W cut to the predetermined length is cut to the predetermined length, and therefore, even when the wire rope W is used after being manufactured and cut to the predetermined length, the magnetic material information (the first magnetic material information 10) of the wire rope W after being cut can be easily acquired. As a result, by acquiring the probe signal DS after the start of use of the wire rope W cut to a predetermined length, it is possible to easily grasp the change in the deterioration state of the wire rope W.

In the first embodiment, as described above, the magnetic substance management method includes the steps of: step S1, acquiring a first detection signal DS1 based on the magnetic field or change in the magnetic field of the wire rope W at a factory location of the wire rope W; step S2, acquiring a second probe signal DS2 of the wire rope W at the use location of the wire rope W in the same manner as the first probe signal DS 1; a step S3 of storing, in the server 3, the first magnetic substance information 10 obtained by associating the first probe signal DS1 with the identifier of the wire rope W; step S4 of storing, in the server 3, second magnetic substance information 11 obtained by associating the second probe signal DS2 with the identifier of the wire rope W; and a step S5 of estimating the deterioration state of the wire rope W based on at least the first magnetic substance information 10 and the second magnetic substance information 11. Thus, it is possible to provide a magnetic substance management method that can suppress a decrease in the quality of the accumulated measurement data and can suppress a decrease in the accuracy of the state determination of the wire rope W, as in the magnetic substance management system 100.

[ second embodiment ]

Next, a magnetic substance management system 200 according to a second embodiment of the present invention will be described with reference to fig. 14. Unlike the first embodiment in which the first transmitter 4 and the second transmitter 5 are included in the first magnetic material inspection device 1 and the second magnetic material inspection device 2, the first transmitter 4 and the second transmitter 5 are included in the first transmitter 40 and the second transmitter 41 in the second embodiment. The first transmission device 40 and the second transmission device 41 are examples of "devices other than the first magnetic material inspection device and the second magnetic material inspection device", respectively, in the claims. The same components as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

As shown in fig. 14, in the magnetic substance management system 200 of the second embodiment, the first transmission unit 4 is included in the first transmission device 40. The second transmission unit 5 is included in the second transmission device 41. The first transmission device 40 and the second transmission device 41 are connected to the server 3 via the network N, respectively. The first transmitting device 40 and the second transmitting device 41 include, for example, a personal computer or the like.

In the second embodiment, the first magnetic substance inspection device 1 is configured to transmit the first magnetic substance information 10 to the server 3 via the first transmission device 40. The first magnetic substance inspection device 1 and the first transmission device 40 may be connected by a wired or wireless method, or the first magnetic substance information 10 may be moved from the first magnetic substance inspection device 1 to the first transmission device 40 by a portable storage medium, and the first magnetic substance information 10 may be transmitted from the first transmission device 40 to the server 3 via the network N.

The second magnetic substance inspection device 2 is configured to transmit the second magnetic substance information 11 to the server 3 via the second transmission device 41. The second magnetic material inspection device 2 and the second transmission device 41 may be connected by a wired or wireless method, or the second magnetic material information 11 may be moved from the second magnetic material inspection device 2 to the second transmission device 41 by a portable storage medium, and the second magnetic material information 11 may be transmitted from the second transmission device 41 to the server 3 via the network N. Therefore, the second magnetic substance inspection device 2 can be used for inspecting the wire rope W installed in a crane of a ship or the like.

(Effect of the second embodiment)

In the second embodiment, the following effects can be obtained.

In the second embodiment, as described above, the first transmission unit 4 and the second transmission unit 5 are included in the first transmission device 40 and the second transmission device 41, and are configured to transmit at least the first magnetic material information 10 and the second magnetic material information 11 to the server 3 via the network N. Thus, it is not necessary to provide the first magnetic material inspection device 1 and the second magnetic material inspection device 2 with an information transmission function (the first transmission unit 4 and the second transmission unit 5), and the first magnetic material inspection device 1 and the second magnetic material inspection device 2 can be used even in a place where connection to the network N is impossible. As a result, the degree of freedom of the magnetic substance management system 200 can be improved.

Other effects of the second embodiment are the same as those of the first embodiment.

(modification example)

Furthermore, the embodiments disclosed herein are to be considered in all respects as illustrative and not restrictive. The scope of the present invention is shown by the claims rather than the description of the above embodiments, and includes all modifications (variations) within the meaning and scope equivalent to the claims.

For example, in the first embodiment and the second embodiment, the example in which the first magnetic substance inspection device 1 is disposed at the place where the wire rope W is manufactured is shown as a factory shipment place, but the present invention is not limited to this. For example, the first magnetic substance inspection device 1 may be configured to: the first probe signal DS1 is disposed in a warehouse or the like that stores the wire rope W after the wire rope W is manufactured, and is acquired at the time of shipment after a predetermined time has elapsed after the manufacturing. Further, the first magnetic substance inspection device 1 may be configured to: the first probe signal DS1 is acquired at the time of acceptance inspection and at the time of shipment after machining, and is arranged at a receiving section for the wire rope W, a machining section for performing end machining of the wire rope W, and the like. When the wire rope W is present at the factory, the first magnetic substance inspection device 1 may acquire the first probe signal DS1 at an arbitrary timing.

In the first and second embodiments, the second magnetic substance inspection device 2 is disposed to inspect the wire rope W provided in the elevator E, but the present invention is not limited to this. For example, the second magnetic substance inspection device 2 may be disposed to inspect the wire rope W installed in a machine, a device, or an infrastructure in which the wire rope W is installed, for example, a loading/unloading machine such as a crane, a transport machine, a construction machine, a moving device such as a rope, a nacelle, a game facility, a water gate, a suspension bridge, or the like. The second magnetic substance inspection device 2 may be disposed for inspection before use (before delivery) of a machine, device, or infrastructure in which the wire rope W is installed. The second magnetic substance inspection device 2 may be disposed in a maintenance department for performing quality inspection, maintenance, replacement, and the like of the wire rope W in use or after use when a machine or device provided with the wire rope W is maintained, so as to perform inspection of the wire rope W. When the wire rope W is present at the use location, the second magnetic substance inspection device 2 may acquire the second detection signal DS2 at an arbitrary timing.

In the first and second embodiments, the example in which the magnetic body MM is the wire rope W is shown, but the present invention is not limited to this. For example, the magnetic body MM may be a wire member WS of the wire rope W, a thin plate, a square member, a cylindrical tube, a wire, a chain, or the like. Further, the wire rope W may be covered with resin, plating, or the like. Further, the wire rope W may be a cable or the like as a constituent member.

In the first and second embodiments, when the magnetic field is applied in advance in the extending direction (X direction) of the wire rope W, the configuration of the magnetic field applying unit 6 may be as shown in fig. 15. Specifically, as shown in fig. 15 (a), the pair of magnets 61 and 62 may also be arranged so that the same poles face each other. In addition, the magnet 63 and the magnet 64 may also be arranged so that the same poles face each other. As shown in fig. 15B, the arrangement directions of the magnetic fields of the magnets 61 and 62 and the magnets 63 and 64 may be non-parallel (the Y direction and the direction inclined by the angle θ with respect to the Y direction, respectively). As shown in fig. 15C, the magnets 61 and 62 (or the magnet 63 and the magnet 64d) may be provided only on one side of the probe unit 7. In the present invention, the magnetic field applying unit 6 may be a cylindrical permanent magnet.

In the first and second embodiments, the magnetic field applying unit 6 is formed of a permanent magnet, but the present invention is not limited thereto. In the present invention, the magnetic field applying unit 6 may be formed of an electromagnet (coil).

In the first and second embodiments, the receiver coils 71 and 72 as the differential coil 74 are disposed inside the exciting coil 73, but the present invention is not limited to this. In the present invention, the receiving coils 71 and 72 may be arranged outside the exciting coil 73 as shown in fig. 16 (a). As shown in fig. 16B, the receiver coils 71 and 72 may be arranged side by side on both sides of the excitation coil 73 in the X direction (longitudinal direction) so as to sandwich the excitation coil 73. As shown in fig. 16C, a single receiving coil 71 may be disposed inside (or outside) the exciting coil 73. As shown in fig. 16D, the two excitation coils 73a and 73b may be arranged side by side on both sides of the X direction (longitudinal direction) of the reception coil 71 so as to sandwich the single reception coil 71. As shown in fig. 16E, a single excitation coil 73 and a single reception coil 71 may be arranged side by side in the X direction (longitudinal direction). As shown in fig. 16 (F), the receiver coils 71 and 72 (or a single receiver coil 71) may be arranged, and the excitation coil 73 may be omitted.

In the first embodiment, the first magnetic substance inspection device 1 and the second magnetic substance inspection device 2 each include the first transmission unit 4 and the second transmission unit 5, but the present invention is not limited to this. For example, either one of the first magnetic substance inspection device 1 and the second magnetic substance inspection device 2 may be configured to be connected to the server 3 via the first transmission device 40 or the second transmission device 41 as described in the second embodiment.

In the second embodiment, the first magnetic substance inspection device 1 and the second magnetic substance inspection device 2 are connected to the server 3 via the first transmission device 40 and the second transmission device 41, respectively, but the present invention is not limited to this. For example, either one of the first magnetic substance inspection device 1 and the second magnetic substance inspection device 2 may be configured to be connected to the server 3 without the first transmission device 40 and the second transmission device 41 as in the first embodiment. When the second magnetic material inspection device 2 is disposed in a mobile body such as a ship as a place of use, the second magnetic material inspection device 2 is preferably connected to the server 3 via the second transmission device 41.

In the first and second embodiments, the server 3 estimates the deterioration state of the wire rope W to determine whether or not the wire rope W is damaged, but the present invention is not limited to this. For example, when the first magnetic substance inspection device 1 and the second magnetic substance inspection device 2 acquire the probe signal DS, it may be determined whether or not the wire rope W is damaged. Further, the following may be configured: the first magnetic substance inspection device 1 and the second magnetic substance inspection device 2 only determine whether there is damage to the wire rope W, and the server 3 determines the number of damages of the wire rope W and the type of each damage, and analyzes them in detail. When the server 3 determines the type of damage to the wire rope W, the server 3 may be configured to determine the type of damage occurring to the wire rope W based on the shape of the waveform of the differential waveform DW between the first probe signal DS1 and the second probe signal DS 2.

In the first and second embodiments, the first magnetic substance inspection device 1 acquires the probe signal DS of the wire rope W at the time of manufacture (t1) and then also at the time of shipment (t2), but the present invention is not limited to this. The first magnetic substance inspection device 1 may be configured to acquire the detection signal DS of the wire rope W at any one of the time of manufacture (t1) and the time of shipment (t 2).

In the first and second embodiments, the first and second magnetic substance inspection devices 1 and 2 transmit the request for transmission of the magnetic substance degradation information 12 when the first and second magnetic substance information 10 and 11 are transmitted at the time of shipment (t2) to the periodic inspection n (tn) are shown as an example. For example, the first magnetic material inspection device 1 and the second magnetic material inspection device 2 may not transmit the transmission request of the magnetic material degradation information 12 when transmitting the first magnetic material information 10 and the second magnetic material information 11. If it is desired to acquire the magnetic substance degradation information 12, the transmission request of the magnetic substance degradation information 12 may be transmitted whenever.

In the first and second embodiments, the configuration in which the differential waveform DW between the probe signal DS at the previous inspection and the magnetic material degradation information 12 between the time of manufacture (t1) and the time of shipment (t2), the magnetic material degradation information 12 between the time of use start (t3) and the time of shipment (t2), and the like is acquired is shown as an example, but the present invention is not limited to this. The probe signal DS used to acquire the differential waveform DW may be acquired at an arbitrary timing.

In addition, in the first embodiment and the second embodiment, the following examples are shown: the first magnetic material information 10 includes the ID of the wire rope W, the length of the wire rope W, the diameter of the wire rope W, the date and time when the first probe signal DS1 was acquired, and the first probe signal DS1, but the present invention is not limited thereto. For example, the first magnetic substance information 10 may include the length of the wire rope W, the diameter of the wire rope W, the configuration of the wire rope W (indicating how the wire members WS are twisted), shipment destination information, and the like. Any information may be included in the first magnetic material information 10 as long as it is information on the wire rope W.

In the first and second embodiments, the second magnetic substance inspection device 2 periodically inspects the wire rope W, but the present invention is not limited to this. For example, the second magnetic substance inspection device 2 may be configured to inspect the wire rope W at a time or monitor the wire rope W at all times.

In the first and second embodiments, the server 3 estimates the deterioration state of the wire rope W by acquiring the differential waveform DW, but the present invention is not limited to this. The server 3 may be configured to estimate the deterioration state of the wire rope W without acquiring the differential waveform DW. For example, the server 3 may be configured to estimate the deterioration state of the wire rope W using the second probe signal DS 2. For example, the deterioration state may be estimated from a difference in correlation coefficient, not from the difference waveform DW.

In the first and second embodiments, the server 3 stores the abnormality information 13 as an example, but the present invention is not limited to this. The server 3 may not store the abnormality information 13.

In the first and second embodiments, the server 3 is provided with the degradation information transmitting unit 32, but the present invention is not limited to this. The server 3 may not include the deterioration information transmitting unit 32 when the magnetic substance deterioration information 12 is not transmitted to the first magnetic substance inspection device 1 and the second magnetic substance inspection device 2.

In the first and second embodiments, the server 3 is connected to the first and second magnetic substance inspection devices 1 and 2 via the network N, but the present invention is not limited to this. For example, the first magnetic information 10 and the second magnetic information 11 may be stored in a portable storage medium and directly stored in the storage unit 31 of the server 3.

In the first and second embodiments, the server 3 estimates the deterioration state of the wire rope W from the differential waveform DW, but the present invention is not limited to this. For example, the server 3 may be configured to estimate the deterioration state of the wire rope W from the second probe signal DS 2. However, since the determination based on the difference waveform DW detects only the peak P due to the change (damage) in the deterioration state of the wire rope W as compared with the determination based on the second detection signal DS2, the change (damage) in the deterioration state of the wire rope W can be grasped at a glance. Therefore, a configuration of estimating the deterioration state (damage) of the wire rope W from the differential waveform DW is preferable.

In the first and second embodiments, the server 3 transmits the magnetic substance degradation information 12 in response to a transmission request from at least one of the first magnetic substance inspection device 1 and the second magnetic substance inspection device 2, but the present invention is not limited to this. Information necessary for the business may be transmitted from the first magnetic substance inspection device 1, the second magnetic substance inspection device 2, and the server 3 in response to a transmission request from an operator at a factory or a use place, a maintenance manager of a machine, a device, or an infrastructure in which the wire rope W is installed, an owner, or a terminal (a maintenance tool such as a tablet computer or a smartphone, a personal computer, or the like) used by a user in the business.

Description of the reference numerals

1: a first magnetic substance inspection device; 2: a second magnetic substance inspection device; 3: a server; 4: a first transmitting section; 5: a second transmitting section; 6: a magnetic field applying unit; 7: a detection section; 10: first magnetic substance information; 11: second magnetic substance information; 12: magnetic substance degradation information; 13: abnormal information; 32: a deterioration information transmitting unit; 33: a magnetic material information acquisition unit; 40: a first transmission device (a device other than the first magnetic material inspection device and the second magnetic material inspection device); 41: a second transmission device (a device other than the first magnetic material inspection device and the second magnetic material inspection device); 86: an output section; 87: a deterioration information acquisition unit; 100. 200: a magnetic substance management system; and (2) DS: detecting a signal; DS 1: a first detection signal; DS 2: a second detection signal; MM: a magnetic body; w: a wire rope (magnetic body).