阅读说明：本技术 电磁信号监测装置 (Electromagnetic signal monitoring device ) 是由 辛中华 张勇 刘涛 苏珂嘉 赵英 于 2021-08-13 设计创作，主要内容包括：本公开提出一种电磁信号监测装置,具体实现方案为：井下监测主机的防爆壳体确保了在井下恶劣环境中工作的安全性,电源模块为井下监测主机工作时提供转换电压,通过天线和探测器接收环境中各种频率范围的电磁信号,控制模块在地面上的井上监测主机的控制下设置频域信号采集模块和时域信号采集模块的触发条件和采样参数,并存储时域信号采集模块根据对应的触发条件和采样参数采集的时域信号,和频域信号采集模块根据对应的触发条件和采样参数采集的频域信号,实现了同时采集时域信号和频域信号,防爆壳体满足了井下恶劣环境中电磁信号的采集需求,接口设计使井上监测主机对获取到的时域信号和频域信号进行分析,满足了远距离传输和分析的需求。(The utility model provides an electromagnetic signal monitoring devices, concrete implementation scheme does: the explosion-proof shell of the underground monitoring host ensures the safety of working in a severe underground environment, the power supply module provides conversion voltage for the underground monitoring host when working, receives electromagnetic signals in various frequency ranges in the environment through the antenna and the detector, the control module sets the triggering conditions and sampling parameters of the frequency domain signal acquisition module and the time domain signal acquisition module under the control of the underground monitoring host on the ground, stores the time domain signal acquired by the time domain signal acquisition module according to the corresponding triggering conditions and the sampling parameters, and realizes the simultaneous acquisition of the time domain signal and the frequency domain signal according to the frequency domain signal acquired by the frequency domain signal acquisition module according to the corresponding triggering conditions and the sampling parameters, the explosion-proof shell meets the acquisition requirement of the electromagnetic signals in the severe underground environment, and the interface design ensures that the underground monitoring host analyzes the acquired time domain signal and the acquired frequency domain signal, the requirements of long-distance transmission and analysis are met.)

1. An electromagnetic signal monitoring device, comprising: the underground monitoring host comprises an antenna, a detector, an explosion-proof shell, a frequency domain signal acquisition module, a time domain signal acquisition module, a control module and a power supply module, wherein the frequency domain signal acquisition module, the time domain signal acquisition module, the control module and the power supply module are arranged in the explosion-proof shell.

The antenna is arranged outside the explosion-proof shell and used for receiving electromagnetic signals in the environment;

the detector is arranged outside the explosion-proof shell and used for acquiring electromagnetic signals in the environment;

the frequency domain signal acquisition module is connected with the antenna and is used for converting electromagnetic signals in the environment received by the antenna into frequency domain signals;

the time domain signal acquisition module is connected with the detector and is used for converting the electromagnetic signals in the environment acquired by the detector into time domain signals;

the on-well monitoring host is used for controlling the control module to set a trigger condition, controlling the control module to set a first sampling parameter of the frequency domain signal acquisition module and a second sampling parameter of the time domain signal acquisition module, and analyzing the acquired time domain signal and the acquired frequency domain signal;

the control module is connected with the frequency domain signal acquisition module and is used for setting a trigger condition and a first sampling parameter for acquiring a frequency domain signal by the frequency domain signal acquisition module under the control of the aboveground monitoring host, and storing and uploading the frequency domain signal to the aboveground monitoring host;

the control module is also connected with the time domain signal acquisition module and is used for setting a trigger condition and a second sampling parameter for acquiring a time domain signal by the time domain signal acquisition module and storing and uploading the time domain signal to the aboveground monitoring host;

the power module is connected with the control module, the frequency domain signal acquisition module and the time domain signal acquisition module and is used for converting alternating current voltage of the underground power supply into direct current voltage corresponding to the control module, the frequency domain signal acquisition module and the time domain signal acquisition module.

2. The monitoring device of claim 1, wherein the antenna is plural; the underground monitoring host comprises a radio frequency switch;

the radio frequency switch is connected with the plurality of antennas and used for selecting electromagnetic signals received by different antennas.

3. The monitoring device of claim 1, wherein the power module comprises a voltage protection module and a power conversion module;

the power supply conversion module is used for converting the underground 127V or 660V alternating voltage into direct current voltages corresponding to the control module, the frequency domain signal acquisition module and the time domain signal acquisition module;

and the power supply protection module is used for carrying out explosion-proof protection on the voltage conversion module.

4. The monitoring device of claim 1,

the aboveground monitoring host comprises a display and an upper computer;

the display is used for displaying the frequency domain signal and the time domain signal acquired by the underground monitoring host;

the upper computer is arranged on the well, controls a control module of the underground monitoring host through an application program, sets a trigger condition, a first sampling parameter and a second sampling parameter, and analyzes a time domain signal and a frequency domain signal uploaded by the underground monitoring host.

5. The monitoring device of claim 2, wherein the plurality of antennas are configured to receive waveform data of electromagnetic signals in the environment at 7KHz to 20GHz and on-cable microsecond level signals.

6. The monitoring device of claim 2, wherein the time domain acquisition module and the frequency domain acquisition module are each provided with a metal housing, and the metal housing is tightly attached to the explosion-proof housing.

7. A monitoring device according to any of claims 1 to 6, wherein the probe comprises one of a probe and a transformer.

8. The monitoring device of any one of claims 1-6, wherein the first sampling parameter includes sampling frequency and amplitude information and the second sampling parameter includes sampling time and amplitude information.

Technical Field

The present disclosure relates to the field of electromagnetic signal monitoring technology, and in particular, to an electromagnetic signal monitoring device.

Background

The situation under a mine is very complicated, electric equipment in a narrow space under the mine is various, and conducted electromagnetic interference generated by high-power equipment such as various transformers, switching power supplies, frequency conversion devices, mining equipment, ventilation equipment, transportation equipment and the like is very serious, so that the underground electromagnetic environment is deteriorated, interference is generated on equipment such as control and monitoring and the like, and further equipment running in the environment is influenced.

The method has important reference value for mastering the underground electromagnetic environment condition to design and application of various products and equipment. The testing environment under the mine is very severe, the testing conditions are very harsh, the requirements on the volume, the electrical performance, the working duration and the like of a testing instrument are met, and the related testing instrument cannot meet all the requirements.

Disclosure of Invention

The present disclosure provides an electromagnetic signal monitoring device.

According to an aspect of the present disclosure, there is provided an electromagnetic signal monitoring device,

the method comprises the following steps: the underground monitoring host comprises an antenna, a detector, an explosion-proof shell, a frequency domain signal acquisition module, a time domain signal acquisition module, a control module and a power supply module, wherein the frequency domain signal acquisition module, the time domain signal acquisition module, the control module and the power supply module are arranged in the explosion-proof shell.

The antenna is arranged outside the explosion-proof shell and used for receiving electromagnetic signals in the environment;

the detector is arranged outside the explosion-proof shell and used for acquiring electromagnetic signals in the environment;

the frequency domain signal acquisition module is connected with the antenna and is used for converting electromagnetic signals in the environment received by the antenna into frequency domain signals;

the time domain signal acquisition module is connected with the detector and is used for converting the electromagnetic signals in the environment acquired by the detector into time domain signals;

the on-well monitoring host is used for controlling the control module to set a trigger condition, controlling the control module to set a first sampling parameter of the frequency domain signal acquisition module and a second sampling parameter of the time domain signal acquisition module, and analyzing the acquired time domain signal and the acquired frequency domain signal;

the control module is connected with the frequency domain signal acquisition module and is used for setting a trigger condition and a first sampling parameter for acquiring a frequency domain signal by the frequency domain signal acquisition module under the control of the aboveground monitoring host, and storing and uploading the frequency domain signal to the aboveground monitoring host;

the control module is also connected with the time domain signal acquisition module and is used for setting a trigger condition and a second sampling parameter for acquiring a time domain signal by the time domain signal acquisition module and storing and uploading the time domain signal to the aboveground monitoring host;

the power module is connected with the control module, the frequency domain signal acquisition module and the time domain signal acquisition module and is used for converting alternating current voltage of the underground power supply into direct current voltage corresponding to the control module, the frequency domain signal acquisition module and the time domain signal acquisition module.

The technical scheme provided by the embodiment of the disclosure has the following beneficial effects:

the explosion-proof shell of the underground monitoring host ensures the safety of working in underground severe environment, the power supply module provides conversion voltage for the underground monitoring host when working underground, receives electromagnetic signals in various frequency ranges in the environment through the antenna and the detector, the control module sets the triggering conditions and corresponding sampling parameters of the frequency domain signal acquisition module and the time domain signal acquisition module under the control of the underground monitoring host on the ground, stores the time domain signal acquired by the time domain signal acquisition module according to the corresponding triggering condition and the second sampling parameter, and realizes the simultaneous acquisition of the time domain signal and the frequency domain signal according to the frequency domain signal acquired by the frequency domain signal acquisition module according to the corresponding triggering condition and the second sampling parameter, the explosion-proof shell meets the acquisition requirements of the electromagnetic signals in underground severe environment such as moisture, dust and the like, and the interface design simultaneously enables the underground monitoring host to analyze the acquired time domain signal and the frequency domain signal, the requirements of long-distance transmission and analysis are met.

It should be understood that the statements in this section do not necessarily identify key or critical features of the embodiments of the present disclosure, nor do they limit the scope of the present disclosure. Other features of the present disclosure will become apparent from the following description.

Drawings

The drawings are included to provide a better understanding of the present solution and are not to be construed as limiting the present disclosure. Wherein:

fig. 1 is a schematic structural diagram of an electromagnetic signal monitoring apparatus provided in an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of another electromagnetic signal monitoring apparatus provided in the embodiment of the present disclosure;

fig. 3 is a schematic structural diagram of another electromagnetic signal monitoring apparatus provided in the embodiment of the present disclosure.

Fig. 4 is a schematic structural diagram of another electromagnetic signal detection apparatus provided in the embodiment of the present disclosure.

Detailed Description

Exemplary embodiments of the present disclosure are described below with reference to the accompanying drawings, in which various details of the embodiments of the disclosure are included to assist understanding, and which are to be considered as merely exemplary. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the present disclosure. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.

An electromagnetic signal monitoring apparatus of an embodiment of the present disclosure is described below with reference to the drawings.

Fig. 1 is a schematic structural diagram of an electromagnetic signal monitoring device according to an embodiment of the present disclosure.

As shown in fig. 1, the apparatus includes: a downhole monitoring mainframe 1000 and an uphole monitoring mainframe 2000.

And the downhole monitoring host 1000 is used for monitoring electromagnetic signals downhole.

The downhole monitoring host 1000 includes an antenna 1100, a detector 1200, an explosion-proof housing 1300, and a frequency domain signal acquisition module 1310, a time domain signal acquisition module 1320, a control module 1330 and a power supply module 1340 disposed inside the explosion-proof housing 1300.

The antenna 1100 is arranged outside the explosion-proof shell 1300, placed in a place where the electromagnetic environment needs to be collected, enters the shell through a horn mouth of the explosion-proof shell through a cable, and is connected with the frequency domain signal collection module for collecting the electromagnetic signals in the environment.

The detector 1200 is arranged outside the explosion-proof housing 1300, is placed in a place where electromagnetic environment needs to be collected, enters the housing through a bell mouth of the explosion-proof housing through a cable, is connected with the time domain signal collecting module, and is used for collecting signals. As one implementation, the detector 1200 may be a probe or a transformer.

A frequency domain signal acquisition module 1310, connected to the antenna 1100, for converting the electromagnetic signals in the environment received by the antenna 1100 into frequency domain signals.

The time domain signal collecting module 1320 is connected to the detector 1200, and is configured to convert the electromagnetic signal collected by the detector 1200 into a time domain signal.

The control module 1330 is connected to the frequency domain signal acquiring module 1310, and configured to set the trigger condition and the first sampling parameter for acquiring the frequency domain signal by the frequency domain signal acquiring module 1310 under the control of the above-ground monitoring host 2000, and store and upload the frequency domain signal to the above-ground monitoring host 2000.

The control module 1330 is further connected to the time domain signal acquiring module 1320, and configured to set a triggering condition and a second sampling parameter for the time domain signal acquiring module 1320 to acquire the time domain signal, and store and upload the time domain signal to the above-ground monitoring host 2000.

The power module 1340 is connected to the control module 1330, the frequency domain signal acquisition module 1310 and the time domain signal acquisition module 1320, and is configured to convert an ac voltage of the downhole power supply into a dc voltage corresponding to the control module 1330, the frequency domain signal acquisition module 1310 and the time domain signal acquisition module 1320.

The aboveground monitoring host 2000 is configured to control the control module to set the trigger condition, and control the control module to set the first sampling parameter of the frequency domain signal acquisition module 1310 and the second sampling parameter of the time domain signal acquisition module 1320, and analyze the acquired time domain signal and the frequency domain signal, so as to output an analysis result, which is convenient for viewing.

The trigger condition may be a set time trigger condition, for example, 20 minutes, that is, the frequency domain signal acquisition module 1310 and the time domain signal acquisition module 1320 acquire every 20 minutes. The triggering condition may be suddenly generated electromagnetic interference, sudden voltage rise, sudden voltage drop, current change, etc.

It should be noted that the trigger conditions for the frequency domain signal acquiring module 1310 and the time domain signal acquiring module 1320 to acquire signals may be the same or different, and are not limited in this embodiment.

In the embodiment of the present disclosure, the downhole monitoring host 1000 is configured with the explosion-proof housing 1300, and the explosion-proof housing meets the explosion-proof requirement of the downhole monitoring host 1000 under the conditions of high pressure and severe environment during downhole operation. However, due to the particularity of the downhole environment, the AC220V voltage that is common to the collection devices cannot be provided, and the power supply module 1340 of the present disclosure may convert the AC voltage of the downhole power supply into the dc voltage required by the control module 1330, the frequency domain signal collection module 1310, and the time domain signal collection module 1320 during operation. The antenna 1100 receives electromagnetic environment signals in a spatial environment, transmits via cable to the frequency domain signal acquisition module 1310, the detector 1200 picks up the electromagnetic environment signal in the space environment, and transmits the signal to the time domain signal collection module 1320 through the cable, the frequency domain signal collection module 1310 obtains the frequency domain signal from the antenna 1100 through the first sampling parameter of the frequency domain signal collection set by the control module 1330, and the time domain signal collection module 1320 obtains the corresponding time domain signal from the detector 1200 through the second sampling parameter of time domain signal collection set by the control module 1330, so that the time domain and frequency domain signals can be collected at the same time, and the collected electromagnetic signal data are stored and analyzed to find the actual electromagnetic environment under the mine, the anti-interference performance of various devices under the mine in the corresponding electromagnetic environment can be pertinently enhanced, and the working reliability of various devices is improved.

As an implementation manner, the first sampling parameter includes sampling frequency and amplitude information, and according to the first sampling parameter, the frequency-domain signal acquisition module 1310 acquires a frequency-domain signal of the corresponding frequency and amplitude information from the antenna 1100. The second sampling parameter includes sampling time and amplitude information, and according to the second sampling parameter, the time domain signal acquiring module 1320 acquires a time domain signal corresponding to the sampling time and amplitude information from the detector 1200. Based on the above embodiments, the present embodiment provides another electromagnetic signal monitoring device, fig. 2 is a schematic structural diagram of another electromagnetic signal monitoring device provided in the embodiments of the present disclosure, as shown in fig. 2, the number of antennas 1100 is multiple, and the downhole monitoring host 1100 includes a radio frequency switch 1350. A power module 1340 including a power protection module 1341 and a power conversion module 1342;

the power transformation module 1342 is configured to transform an ac voltage of 127V or 660V in the borehole into a dc voltage corresponding to the control module 1330, the frequency domain signal acquisition module 1310, and the time domain signal acquisition module 1320.

The power protection module 1341 is used for performing explosion suppression protection on the voltage conversion module 1342 so as to adapt to a severe environment with high pressure in the pit, and the working stability of the underground monitoring host 11 is improved.

A radio frequency switch 1350, coupled to the plurality of antennas 1100, for selecting electromagnetic signals received by the different antennas 1100. In fig. 2, only 3 antennas 1100 are exemplarily shown, and in practical applications, the number of the antennas 1100 may be set according to requirements, which is not limited in this embodiment.

In the embodiment of the present disclosure, the working environment under a mine is complex, the frequency range of a single antenna is narrow, and the frequency range of the acquired electromagnetic signal is increased by adding a plurality of antennas, in this embodiment, a radio frequency switch 1350 is added, as an implementation manner, the radio frequency switch 1350 is one, and the radio frequency switch 1350 can be switched to correspond to different antennas 1100, so as to acquire the electromagnetic signal received by the corresponding antenna 1100; as another implementation manner, the number of the radio frequency switches 1350 is multiple, the radio frequency switches 1350 and the antennas 1100 have a corresponding relationship, and the electromagnetic signals received by the corresponding antennas 1100 are obtained by switching the corresponding radio frequency switches 1350 and the corresponding antennas 1100, so that the flexibility of electromagnetic signal acquisition is improved, and the range of electromagnetic signal acquisition frequency bands is increased.

In an implementation manner of the embodiment of the present disclosure, waveform data of electromagnetic signals from 7KHz to 20GHz in an environment and microsecond-level signals on a cable, that is, signals with a time period greater than or equal to microsecond level on the cable, may be received by the multiple antennas 1100, so that a range of an electromagnetic signal acquisition frequency band is increased.

In addition, in order to meet the requirement of heat dissipation of the downhole equipment, in the embodiment of the present disclosure, the time domain acquisition module 1320 and the frequency domain acquisition module 1310 are both provided with a metal housing, and the metal housing is tightly attached to the explosion-proof housing 113, so that heat generated by the time domain acquisition module 1320 and the frequency domain acquisition module 1310 during operation can be conducted to the explosion-proof housing connected to the metal housing through the metal housing, and since the metal housing is tightly attached to the explosion-proof housing 1300, the conduction area is increased, and the heat dissipation effect is improved.

Based on the above embodiments, an embodiment of the present disclosure provides another electromagnetic signal monitoring device, and fig. 3 is a schematic structural diagram of the another electromagnetic signal monitoring device provided in the embodiment of the present disclosure, as shown in fig. 3, an uphole monitoring host 2000 includes a display 2100 and an upper computer 2200.

The display 2100 is configured to display the frequency domain signal and the time domain signal collected by the downhole monitoring host 1000.

The upper computer 2200 is disposed above the ground, that is, on the ground, controls the control module 1300 of the downhole monitoring host 1000 through software, sets the trigger condition, the first sampling parameter, and the second sampling parameter, and analyzes the time domain signal and the frequency domain signal uploaded by the downhole monitoring host 1000.

In the embodiment of the disclosure, an application program is disposed in the upper computer 2200, the downhole monitoring host 1000 is controlled by the application program, and a frequency band of a collected signal, a time parameter, a trigger condition, and the like can be set, and specifically, an instruction is sent to the control module 1330 by the application program, so that the control module 1330 controls the trigger condition for data collection by the time domain signal collection module 1320 and the frequency domain signal collection module 1310 in the downhole monitoring host, and a first sampling parameter and a second sampling parameter, where the trigger condition is, for example, a set time period, so that the time domain signal collection module 1320 collects an electromagnetic signal according to the second sampling parameter in the set time period, and the frequency domain signal collection module 1310 collects an electromagnetic signal according to the first sampling parameter in the set time period, thereby achieving automatic collection of a downhole electromagnetic signal, and at the same time domain signal collected by the time domain signal collection module 1320 and the frequency domain signal collection module 1310 collected by the time domain signal collection module 1310 The frequency domain signal is locally stored and converted into an optical signal through the transmission interface, and transmitted to the above-ground monitoring host 2000 through the connection optical cable. Furthermore, the uphole monitoring host 2000 analyzes the data acquired from the downhole monitoring host 1000 according to the set application program, and displays the data through the display 2100, so as to check and analyze the electromagnetic environment signals recorded by the test.

It should be noted that the control module 1330 includes a storage unit and a communication unit, and is configured to store the time domain signal acquired by the time domain signal acquisition module 1320 and the frequency domain signal acquired by the frequency domain signal acquisition module 1310, convert the time domain signal and the frequency domain signal into an optical signal through the transmission interface 1360 disposed in the explosion-proof housing 1300 after data processing, and connect with an optical cable to transmit the optical signal to the uphole monitoring host 2000. The transmission interface 1360 is an output optical port or a network port, and can transmit long distance to the above-ground monitoring host 2000, for example, tens of kilometers, and compared with conventional USB transmission or network cable transmission, long distance transmission can be achieved. Optionally, a transmission interface 1360 may also be provided in the control module 1330.

The electromagnetic signal monitoring device of the embodiment of the disclosure can test electromagnetic signals in an underground space environment and on a cable, has high-speed data acquisition, storage and processing capacity, and can receive waveform data of electromagnetic environment signals with the space from 7KHz to 20GHz and signals of microsecond mu s level on the cable by matching with different antennas. The electromagnetic signal monitoring device of the embodiment of the disclosure is an explosion-proof and intrinsically safe device, can be applied to the environment with explosive gas such as a coal mine, has small volume, small heat productivity, wide frequency band for acquiring electromagnetic environment signals and good real-time performance, and can be applied to places such as underground coal mines. This device can catch and take notes transient disturbance simultaneously, including electromagnetic interference, the sudden rise of voltage, the sudden drop on the circuit of sudden generation in the environment, data such as current change to through the software in the aboveground monitoring host computer, can set up the trigger condition and measure and take notes in order to trigger the monitoring host computer in the pit, in addition, this disclosed electromagnetic signal monitoring devices accords with the requirement of flame proof and intrinsically safe type equipment safety standard, can use under having explosive gas environment such as colliery.

Fig. 4 is a schematic structural diagram of another electromagnetic signal detection device provided by the embodiment of the present disclosure, in order to adapt to a severe environment under a mine, a flame-proof and intrinsically safe type is adopted for a housing, and a sealing design of an underground monitoring host is improved, so that water vapor and dust are prevented from entering. Wherein, the cable interface of business turn over explosion-proof housing all adopts the sealed piece of plastic material to carry out the sealed installation of full seal. In order to work in a closed environment, a time domain signal acquisition module and a frequency domain signal acquisition module with low power consumption are selected, a metal radiating shell is designed for the time domain signal acquisition module and the frequency domain signal acquisition module, and the metal radiating shell is tightly attached to the explosion-proof shell. In order to meet the requirements of underground explosion-proof electrical equipment, a power switch box is arranged and used for remotely controlling the power supply of an underground monitoring host to be started, an explosion-proof power supply protection module is designed for a power supply, and a power supply conversion module is designed for adapting to underground power supply voltage and converting the voltage.

It should be noted that the foregoing descriptions of the downhole monitoring host and the uphole monitoring host in the electromagnetic signal detection apparatus are also applicable to this embodiment, and are not described herein again.

It should be understood that various forms of the flows shown above may be used, with steps reordered, added, or deleted. For example, the steps described in the present disclosure may be executed in parallel or sequentially or in different orders, and are not limited herein as long as the desired results of the technical solutions disclosed in the present disclosure can be achieved.

The above detailed description should not be construed as limiting the scope of the disclosure. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may be made in accordance with design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present disclosure should be included in the scope of protection of the present disclosure.