阅读说明：本技术 计轴磁头监测装置及系统 (Axle counting magnetic head monitoring device and system ) 是由 王康 于 2021-07-12 设计创作，主要内容包括：本发明提供一种计轴磁头监测装置及系统,该装置包括采集模块、收发模块、第一比较器、第二比较器和报警装置；采集模块用于采集计轴磁头的第一传感器和第二传感器的输出电压,并将采集的输出电压发送给收发模块；第一比较器用于将收发模块发送的第一传感器和第二传感器的输出电压分别与预设电压范围进行比较,若第一传感器和第二传感器的输出电压均在预设电压范围内,则触发收发模块将第一传感器和第二传感器的输出电压发送至第二比较器；第二比较器用于将第一传感器和第二传感器的输出电压进行比较,根据比较结果触发报警装置报警。本发明实现对计轴磁头进行自动准确地监测,并对计轴磁头的异常情况及时报警。(The invention provides a device and a system for monitoring a magnetic head of a shaft counting, wherein the device comprises an acquisition module, a transceiver module, a first comparator, a second comparator and an alarm device; the acquisition module is used for acquiring output voltages of a first sensor and a second sensor of the axle counting magnetic head and sending the acquired output voltages to the transceiving module; the first comparator is used for comparing the output voltages of the first sensor and the second sensor sent by the transceiver module with a preset voltage range respectively, and if the output voltages of the first sensor and the second sensor are both in the preset voltage range, the transceiver module is triggered to send the output voltages of the first sensor and the second sensor to the second comparator; the second comparator is used for comparing the output voltages of the first sensor and the second sensor and triggering the alarm device to alarm according to the comparison result. The invention can automatically and accurately monitor the axle-counting magnetic head and timely alarm the abnormal condition of the axle-counting magnetic head.)

1. An axle counting magnetic head monitoring device is characterized by comprising an acquisition module, a transceiver module, a first comparator, a second comparator and an alarm device;

the input end of the acquisition module is connected with the first sensor and the second sensor of the axle counting magnetic head, and the output end of the acquisition module is connected with the transceiving module;

the transceiver module is connected with the first comparator, the transceiver module is connected with the second comparator, and the second comparator is connected with the alarm device;

the acquisition module is used for acquiring output voltages of a first sensor and a second sensor of the axle counting magnetic head and sending the output voltages of the first sensor and the second sensor to the transceiver module;

the transceiver module is used for sending the output voltages of the first sensor and the second sensor to the first comparator;

the first comparator is used for comparing the output voltages of the first sensor and the second sensor with a preset voltage range respectively, and under the condition that the output voltages of the first sensor and the second sensor are both in the preset voltage range, the transceiver module is triggered to send the output voltages of the first sensor and the second sensor to the second comparator;

the second comparator is used for comparing the output voltages of the first sensor and the second sensor;

and the alarm device is used for giving an alarm according to the comparison result of the second comparator.

2. The axle counting head monitoring device of claim 1 further comprising a waveform generator;

the waveform generator is connected with the transceiver module and the second comparator;

the waveform generator is used for generating a first waveform from the output voltage of a first sensor sent by the transceiver module within a preset time period, generating a second waveform from the output voltage of a second sensor sent by the transceiver module within the preset time period, and sending the first waveform and the second waveform to the second comparator;

the second comparator is configured to compare the first waveform with a second waveform.

3. The axle-counting head monitoring device according to claim 1, wherein the number of the axle-counting heads is plural;

the acquisition module comprises a plurality of input interfaces, and the first sensor and the second sensor are respectively in one-to-one correspondence with the input interfaces;

the first sensor of each axle counting magnetic head is connected with the input interface corresponding to the first sensor, and the second sensor of each axle counting magnetic head is connected with the input interface corresponding to the second sensor;

the acquisition module is used for acquiring the output voltage of the first sensor of each axle-counting magnetic head through the input interface corresponding to the first sensor of each axle-counting magnetic head and acquiring the output voltage of the second sensor of each axle-counting magnetic head through the input interface corresponding to the second sensor of each axle-counting magnetic head.

4. The apparatus of any of claims 1-3, wherein the acquisition module comprises a first electromagnetic protection module and an ADC chip;

the first electromagnetic protection module is used for performing electromagnetic protection on the acquisition module;

the ADC chip is used for collecting output voltages of a first sensor and a second sensor of the axle counting magnetic head and sending the output voltages of the first sensor and the second sensor to the transceiver module.

5. The apparatus of any of claims 1-3, further comprising a power module;

the power supply module comprises a second electromagnetic protection module, a power filter, a main power supply and an auxiliary power supply;

the second electromagnetic protection module is used for performing electromagnetic protection on the power supply module;

the power filter is used for filtering the output voltage of the main power supply or the auxiliary power supply and inputting the filtered output voltage into the acquisition module, the transceiver module, the first comparator, the second comparator and the alarm device so as to supply power to the acquisition module, the transceiver module, the first comparator, the second comparator and the alarm device.

6. The apparatus of any of claims 1-3, further comprising a communication module;

the communication module comprises an Ethernet communication module and a wireless communication module;

the transceiver module communicates with the second comparator through the Ethernet communication module and/or the wireless communication module.

7. The apparatus of claim 6, wherein the acquisition module, the transceiver module, the first comparator and the communication module are integrated on a same substrate.

8. An axle-counting head monitoring device according to any one of claims 1 to 3, further comprising a display device;

the display device is used for displaying the output voltage of the first sensor and the second sensor.

9. An axle counting head monitoring system comprising a plurality of axle counting head monitoring devices according to any one of claims 1 to 8.

10. The axle-counting head monitoring system of claim 9, further comprising a serial port module;

and the plurality of axle counting magnetic head monitoring devices are in cascade communication through the serial port module.

Technical Field

The invention relates to the technical field of rail transit, in particular to an axle counting magnetic head monitoring device and system.

Background

The axle counting is a device for detecting the idle and occupied states of the subway line section. The axle counting meets high requirements of a plurality of rail transit operators due to excellent safety, economy and reliability, has the advantages of high speed, few faults, multiple functions, easiness in maintenance and the like, and is widely applied to subway lines.

Because the axle that lies in outdoor equipment is in abominable natural environment, often takes place the trouble that the axle counting magnetic head receives the interference, brings the hidden danger for driving safety, still can lead to the large tracts of land train night when serious, influences driving efficiency. Therefore, it is necessary to monitor the condition of the axle counting head to perform maintenance on the axle counting head in the event of a failure thereof.

At present, the state of the axle-counting magnetic heads is checked one by one in a manual mode, namely, field test is carried out by manually using voltage monitoring instruments such as a multimeter and an oscilloscope, and then a test result is analyzed according to experience to determine whether the axle-counting magnetic heads are abnormal or not. The inspection mode has the advantages of high monitoring working strength, and poor accuracy and instantaneity.

Disclosure of Invention

The invention provides an axle counting magnetic head monitoring device and system, which are used for overcoming the defects of high working strength, poor accuracy and poor real-time performance of manual monitoring in the prior art and realizing real-time automatic monitoring of an axle counting magnetic head.

The invention provides an axle counting magnetic head monitoring device, which comprises an acquisition module, a transceiving module, a first comparator, a second comparator and an alarm device, wherein the acquisition module is used for acquiring an axle counting magnetic head;

the input end of the acquisition module is connected with the first sensor and the second sensor of the axle counting magnetic head, and the output end of the acquisition module is connected with the transceiving module;

the transceiver module is connected with the first comparator, the transceiver module is connected with the second comparator, and the second comparator is connected with the alarm device;

the acquisition module is used for acquiring output voltages of a first sensor and a second sensor of the axle counting magnetic head and sending the output voltages of the first sensor and the second sensor to the transceiver module;

the transceiver module is used for sending the output voltages of the first sensor and the second sensor to the first comparator;

the first comparator is used for comparing the output voltages of the first sensor and the second sensor with a preset voltage range respectively, and under the condition that the output voltages of the first sensor and the second sensor are both in the preset voltage range, the transceiver module is triggered to send the output voltages of the first sensor and the second sensor to the second comparator;

the second comparator is used for comparing the output voltages of the first sensor and the second sensor;

and the alarm device is used for giving an alarm according to the comparison result of the second comparator.

The invention provides an axle counting magnetic head monitoring device, which further comprises a waveform generator;

the waveform generator is connected with the transceiver module and the second comparator;

the waveform generator is used for generating a first waveform from the output voltage of a first sensor sent by the transceiver module within a preset time period, generating a second waveform from the output voltage of a second sensor sent by the transceiver module within the preset time period, and sending the first waveform and the second waveform to the second comparator;

the second comparator is configured to compare the first waveform with a second waveform.

According to the axle counting magnetic head monitoring device provided by the invention, the number of the axle counting magnetic heads is multiple;

the acquisition module comprises a plurality of input interfaces, and the first sensor and the second sensor are respectively in one-to-one correspondence with the input interfaces;

the first sensor of each axle counting magnetic head is connected with the input interface corresponding to the first sensor, and the second sensor of each axle counting magnetic head is connected with the input interface corresponding to the second sensor;

the acquisition module is used for acquiring the output voltage of the first sensor of each axle-counting magnetic head through the input interface corresponding to the first sensor of each axle-counting magnetic head and acquiring the output voltage of the second sensor of each axle-counting magnetic head through the input interface corresponding to the second sensor of each axle-counting magnetic head.

According to the axle counting magnetic head monitoring device provided by the invention, the acquisition module comprises a first electromagnetic protection module and an ADC chip;

the first electromagnetic protection module is used for performing electromagnetic protection on the acquisition module;

the ADC chip is used for collecting output voltages of a first sensor and a second sensor of the axle counting magnetic head and sending the output voltages of the first sensor and the second sensor to the transceiver module.

The invention provides an axle counting magnetic head monitoring device, which further comprises a power module;

the power supply module comprises a second electromagnetic protection module, a power filter, a main power supply and an auxiliary power supply;

the second electromagnetic protection module is used for performing electromagnetic protection on the power supply module;

the power filter is used for filtering the output voltage of the main power supply or the auxiliary power supply and inputting the filtered output voltage into the acquisition module, the transceiver module, the first comparator, the second comparator and the alarm device so as to supply power to the acquisition module, the transceiver module, the first comparator, the second comparator and the alarm device.

The invention provides an axle counting magnetic head monitoring device, which further comprises a communication module;

the communication module comprises an Ethernet communication module and a wireless communication module;

the transceiver module communicates with the second comparator through the Ethernet communication module and/or the wireless communication module.

According to the axle counting magnetic head monitoring device provided by the invention, the acquisition module, the transceiver module, the first comparator and the communication module are integrated on the same substrate.

The invention provides an axle counting magnetic head monitoring device, which further comprises a display device;

the display device is used for displaying the output voltage of the first sensor and the second sensor.

The invention also provides an axle counting magnetic head monitoring system which comprises a plurality of axle counting magnetic head monitoring devices.

The axle counting magnetic head monitoring system further comprises a serial port module;

and the plurality of axle counting magnetic head monitoring devices are in cascade communication through the serial port module.

According to the axle counting magnetic head monitoring device and system, the output voltages of the first sensor and the second sensor of the axle counting magnetic head are automatically monitored in real time through the acquisition module, the output voltages of the first sensor and the second sensor are respectively and automatically compared with the preset voltage range through the first comparator, the output voltages of the first sensor and the second sensor are compared through the second comparator, whether the axle counting magnetic head is abnormal or not is accurately determined, and the labor cost and the working intensity caused by manual inspection are greatly reduced; in addition, the alarm device can give an alarm in real time according to the comparison result, so that maintenance personnel can find the abnormal condition of the axle counting magnetic head in time and process the abnormal condition in time.

Drawings

In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an axle counting head monitoring device provided by the present invention;

FIG. 2 is a schematic diagram of the construction of an axle counting head monitoring system provided by the present invention;

reference numerals:

1: an acquisition module; 2: a main control unit; 3: an upper computer device;

4: a power supply module; 5: a communication module; 501: a wireless communication module;

502: an Ethernet communication module; 6: and a serial port module.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The axle counting magnetic head monitoring device of the invention is described below with reference to fig. 1, and the device comprises an acquisition module 1, a transceiver module, a first comparator, a second comparator and an alarm device; the input end of the acquisition module 1 is connected with a first sensor and a second sensor of the axle counting magnetic head, and the output end of the acquisition module 1 is connected with the transceiver module; the transceiver module is connected with the first comparator, the transceiver module is connected with the second comparator, and the second comparator is connected with the alarm device;

optionally, the axle counting head is connected with the acquisition module 1 through a signal transmission cable.

The first comparator and the transceiver module may be integrated in the main control unit 2, for example, the main control unit 2 uses an STM32 single chip microcomputer as a main processing chip, which is not specifically limited in this embodiment.

Optionally, the main control unit 2 further has a program programming interface, and a program written according to the calculation rule of the first comparator can be written into the main control unit through the program programming interface, so as to implement the comparison function of the first comparator.

The main control unit 2 is also provided with a debugging and printing serial port, the program in the main control unit can be debugged through the debugging and printing serial port, the debugging process is printed in a log mode, and auxiliary test is carried out on the main control unit.

The axle counting magnetic head, the acquisition module 1, the main control unit 2, the second comparator and the alarm device are sequentially connected in series.

The second comparator may be integrated within the master control unit. Preferably, in order to reduce the size of the main control unit as much as possible and relieve the computing resources of the main control unit, the second comparator is integrated on the upper computer device 3 of the intelligent maintenance operation platform in the station.

The acquisition module 1 is used for acquiring output voltages of a first sensor and a second sensor of the axle counting magnetic head and sending the output voltages of the first sensor and the second sensor to the transceiver module; the transceiver module is used for sending the output voltages of the first sensor and the second sensor to the first comparator;

the first sensor and the second sensor of the axle counting magnetic head are both connected with the acquisition module 1, the acquisition module 1 can acquire the output voltage of the first sensor and the output voltage of the second sensor in real time, and the acquired output voltage of the first sensor and the acquired output voltage of the second sensor are transmitted to the transceiver module in real time.

When receiving the output voltages of the first sensor and the second sensor, the transceiving module sends the output voltages to the first comparator.

The first comparator is used for comparing the output voltages of the first sensor and the second sensor with a preset voltage range respectively, and under the condition that the output voltages of the first sensor and the second sensor are both in the preset voltage range, the transceiver module is triggered to send the output voltages of the first sensor and the second sensor to the second comparator;

the preset voltage range comprises reference output voltage set for the first sensor and the second sensor when a train passes through the axle counting magnetic head, and reference output voltage set for the first sensor and the second sensor when no train passes through the axle counting magnetic head.

The preset voltage range can be flexibly set according to actual requirements.

When the first comparator receives the output voltages of the first sensor and the second sensor, the output voltages of the first sensor and the second sensor are compared with the corresponding preset voltage ranges.

When the output voltages of the first sensor and the second sensor are within the corresponding preset voltage range, the first sensor and the second sensor are normal. At this time, the first comparator may output a high level signal 1 to the transceiver module to trigger the transceiver module to send the output voltages of the first sensor and the second sensor to the second comparator for further monitoring.

And when the output voltage of the first sensor and/or the second sensor is not in the corresponding preset voltage range, indicating that the first sensor and/or the second sensor is abnormal. At this time, the first comparator can output a high level signal 1 to the alarm device to trigger the alarm device to alarm.

The second comparator is used for comparing the output voltages of the first sensor and the second sensor;

optionally, when the second comparator receives the output voltages of the first sensor and the second sensor sent by the first comparator, the output voltages of the first sensor and the second sensor are compared, whether the axle counting magnetic head is abnormal or not is judged according to the comparison result, and the alarm device is triggered to alarm in time when the axle counting magnetic head is abnormal.

And the alarm device is used for giving an alarm according to the comparison result of the second comparator.

For example, when the output voltages of the first sensor and the second sensor are inconsistent, the alarm device can receive a high-level signal 1 to trigger an alarm; when the output voltages of the first sensor and the second sensor are consistent, the alarm device can receive the low level signal 0, and the alarm device does not give an alarm. The present embodiments are not limited to the specific manner in which the alarm is triggered.

In the prior art, when an abnormal condition of a shaft counting magnetic head is checked and analyzed manually, related wiring connected with a shaft counting is checked and operated directly, and other unknown risks such as short circuit or open circuit of the wiring are probably caused due to manual misoperation and the like, so that great problems and hidden dangers are caused for troubleshooting of a shaft counting system.

And directly adopt meter axle magnetic head monitoring devices to monitor the meter axle magnetic head automatically in this embodiment, reduce artifical the participation, effectively avoid the system fault problem that manual operation leads to.

In the embodiment, the output voltages of the first sensor and the second sensor of the axle counting magnetic head are automatically monitored in real time through the acquisition module, the output voltages of the first sensor and the second sensor are respectively and automatically compared with the preset voltage range through the first comparator, and the output voltages of the first sensor and the second sensor are compared through the second comparator, so that whether the axle counting magnetic head is abnormal or not is accurately determined, and the labor cost and the working intensity caused by manual inspection are greatly reduced; in addition, the alarm device can give an alarm in real time according to the comparison result, so that maintenance personnel can find the abnormal condition of the axle counting magnetic head in time and process the abnormal condition in time.

On the basis of the above embodiment, the present embodiment further includes a waveform generator; the waveform generator is connected with the transceiver module and the second comparator; the waveform generator is used for generating a first waveform from the output voltage of a first sensor sent by the transceiver module within a preset time period, generating a second waveform from the output voltage of a second sensor sent by the transceiver module within the preset time period, and sending the first waveform and the second waveform to the second comparator; the second comparator is configured to compare the first waveform with a second waveform.

Alternatively, the waveform generator may be an upper computer device 3 integrated on the intelligent maintenance operation platform in the station.

The preset time period can be set according to actual requirements.

The waveform generator may generate a first waveform from an output voltage of the first sensor transmitted by the transceiver module within a preset period, generate a second waveform from an output voltage of the second sensor, and transmit the generated first and second waveforms to the second comparator in real time.

And when the second comparator receives the first waveform and the second waveform, the first waveform and the second waveform are compared, and the alarm device is triggered to alarm according to the comparison result.

For example, when the first waveform and the second waveform are not consistent, the alarm device may receive a high level signal 1 to trigger an alarm; when the first waveform is consistent with the second waveform, the alarm device can receive the low level signal 0, and the alarm device does not give an alarm. The present embodiments are not limited to the specific manner in which the alarm is triggered.

According to the embodiment, the waveform generator is used for automatically generating the first waveform and the second waveform from the output voltages of the first sensor and the second sensor which are sent by the transceiver module in the preset time period, so that whether the axle counting magnetic head is abnormal or not can be accurately determined according to the first waveform and the second waveform.

On the basis of the above embodiments, the number of the axle counting magnetic heads in the present embodiment is plural; the acquisition module 1 comprises a plurality of input interfaces, and the first sensor and the second sensor are respectively in one-to-one correspondence with the input interfaces; the first sensor of each axle counting magnetic head is connected with the input interface corresponding to the first sensor, and the second sensor of each axle counting magnetic head is connected with the input interface corresponding to the second sensor; the acquisition module 1 is used for acquiring the output voltage of the first sensor of each axle-counting magnetic head through the input interface corresponding to the first sensor of each axle-counting magnetic head, and acquiring the output voltage of the second sensor of each axle-counting magnetic head through the input interface corresponding to the second sensor of each axle-counting magnetic head.

Alternatively, the number of the axle counting magnetic heads which can be monitored by the axle counting magnetic head monitoring device can be set according to actual requirements.

The number of the input interfaces can also be set according to actual requirements.

It should be noted that the number of input interfaces and the number of axle counting heads in the acquisition module 1 are adaptively disposed.

For example, the acquisition module comprises 16 input interfaces and can support acquisition of 16 0-10V voltage signals. Each input interface is connected with the first sensor or the second sensor of each axle-counting magnetic head, so that the acquisition module can simultaneously acquire and monitor the output voltages of the first sensors and the second sensors of the 8 axle-counting magnetic heads.

The acquisition module may transmit the acquired multiplexed output voltages to the transceiver module by using Serial Peripheral Interface (SPI) communication.

The axle counting magnetic head monitoring device in the embodiment can realize monitoring the output voltages of the first sensors and the second sensors of a plurality of axle counting magnetic heads simultaneously, so that the states of the plurality of axle counting magnetic heads are monitored and/or fault information is alarmed simultaneously according to the output voltages of the first sensors and the second sensors of the plurality of axle counting magnetic heads, the maintenance efficiency is high, and the cost of manual inspection is greatly saved.

On the basis of the above embodiments, in this embodiment, the acquisition module 1 includes a first electromagnetic protection module and an ADC chip; the first electromagnetic protection module is used for performing electromagnetic protection on the acquisition module; the ADC chip is used for collecting output voltages of a first sensor and a second sensor of the axle counting magnetic head and sending the output voltages of the first sensor and the second sensor to the transceiver module.

The first electromagnetic protection module may be an EMC (Electro magnetic compatibility) protection module, and is disposed at the input interface of the acquisition module 1, so as to effectively shield or suppress electromagnetic interference and ensure reliability of the acquisition module 1.

The ADC chip can support bipolar signal input.

The ADC chip has multiple acquisition channels for simultaneously acquiring output voltages of the first and second sensors of single or multiple axle counting heads.

On the basis of the above embodiments, the present embodiment further includes a power module 4; the power supply module 4 comprises a second electromagnetic protection module, a power filter, a main power supply and an auxiliary power supply; the second electromagnetic protection module is used for performing electromagnetic protection on the power module 4; the power filter is used for filtering the output voltage of the main power supply or the auxiliary power supply and inputting the filtered output voltage into the acquisition module 1, the transceiver module, the first comparator, the second comparator and the alarm device so as to supply power to the acquisition module 1, the transceiver module, the first comparator, the second comparator and the alarm device.

Optionally, the second electromagnetic protection module may also be an EMC protection module, which is disposed at the input interface of the power module 4, and can effectively shield or suppress electromagnetic interference, thereby ensuring reliability of the power module 4.

The power module 4 comprises a main power supply and an auxiliary power supply, and can select the main power supply or the auxiliary power supply to supply power to the acquisition module 1, the transceiver module, the first comparator, the second comparator, the alarm device and the like according to the charge state so as to ensure the normal power supply of the acquisition module 1, the transceiver module, the first comparator, the second comparator and the alarm device.

The main power supply and the auxiliary power supply can be externally connected with a power supply.

Optionally, the power module 4 supplies power to the acquisition module 1, the transceiver module, the first comparator, the second comparator and the alarm device through a Central Processing Unit (CPU) interface.

Optionally, a power filter is further disposed in the power module 4. The power filter is an electrical device which effectively filters a frequency point of a specific frequency in a power line or frequencies except the frequency point. The power filter is connected to the power line to obtain a power signal with a specific frequency or eliminate the power signal with the specific frequency. In this embodiment, the power filter is arranged to effectively suppress electromagnetic noise and ensure that the power module 4 outputs a stable voltage signal.

On the basis of the above embodiments, the present embodiment further includes a communication module 5; the communication module 5 comprises an Ethernet communication module 502 and a wireless communication module 501; the transceiver module communicates with the second comparator through the ethernet communication module 5 and/or the wireless communication module 501.

Alternatively, the ethernet communication module 502 may be a communication module 5 in which an ethernet chip of the W5500 is a main processing chip, and includes a PHY (Physical, port Physical layer) chip, a network transformer, and a network interface EMC protection.

The network transformer can play a role in isolating voltage, preventing lightning and the like in the communication process of the Ethernet communication module 502, and the EMC protection of the network port can perform electromagnetic protection on the Ethernet communication module 502.

The ethernet communication module 502 performs data communication of the SPI bus with the transceiver module, and performs ethernet communication with the second comparator, so that the output voltages of the first sensor and the second sensor sent by the transceiver module pass through a User Datagram Protocol (UDP), and are transmitted to the second comparator in the form of digital quantity.

The Integrated wireless communication interface communicates with the transceiver module via an Inter-Integrated Circuit (IIC) bus and may also communicate with the second comparator.

The Wireless communication module 501 may be one or more of LoRa Wireless transmission, WIFI (Wireless local area network) Wireless transmission, and Zigbee Wireless transmission, which is not specifically limited in this embodiment.

The wireless communication module 501 performs IIC (Inter-Integrated Circuit) communication with the transceiver module through an Integrated wireless communication interface and performs wireless communication with the second comparator to transmit the output voltages of the first sensor and the second sensor, which are transmitted by the transceiver module, to the second comparator through wireless communication.

In this embodiment, the ethernet communication module 502 and/or the wireless communication module 501 are adopted to transmit the output voltage sent by the second transceiver module to the second comparator, so that the stability of communication can be effectively ensured, and the transmission efficiency is high.

In this embodiment, the transceiver module can be connected to the second comparator through the communication module, so that data interaction between the transceiver module and the second comparator is realized, and not only is communication stability good, but also transmission efficiency is high.

On the basis of the above embodiments, in this embodiment, the acquisition module 1, the transceiver module, the first comparator and the communication module 5 are integrated on the same substrate.

Optionally, the axle counting head monitoring device further comprises a data storage module. The data storage module includes an EEPROM (Electrically Erasable Programmable Read Only Memory) chip and a FLASH Memory (FLASH Memory) chip, which is not specifically limited in this embodiment.

The data storage module is connected to the main control unit, and may be configured to store ID (Identity) information of the main control unit, a comparison result of the first comparator, output voltages of the first sensor and the second sensor, and the like.

In this embodiment, the acquisition module 1, the power module 4, the data storage module, the main control unit 2, the communication module 5, and the like may be integrated on the same substrate, so as to reduce the volume and weight of the axle counting magnetic head monitoring device.

In addition, the axle counting magnetic head monitoring device in the embodiment is further connected with an axle counting system, and when the axle counting system fails, the axle counting magnetic head monitoring device can determine whether the failed axle counting magnetic head is an outdoor axle counting magnetic head or an indoor axle counting system per se according to the output voltages of the first sensor and the second sensor.

If the axle counting magnetic head monitoring device monitors that the axle counting magnetic head is abnormal when the axle counting system fails, positioning a fault source causing the axle counting system to fail as the axle counting magnetic head; if the axle counting magnetic head monitoring device does not monitor that the axle counting magnetic head is abnormal, a fault source causing the axle counting system to break down is positioned as the axle counting system. By the method, when the axle counting system fails, the fault source can be accurately positioned.

On the basis of the above embodiments, the present embodiment further includes a display device; the display device is used for displaying the output voltage of the first sensor and the second sensor.

Optionally, the display device may be connected to the transceiver module, and is configured to display the output voltages of the first sensor and the second sensor in real time, so that a maintenance worker can view the output voltages of the first sensor and the second sensor in time.

In addition, the display device can be connected with the main control unit and/or the upper computer equipment to display the comparison result of the first comparator and/or the second comparator and the abnormal fault prompt information of the axle counting magnetic head in real time, so that maintenance personnel can find the fault in time when the equipment is in fault, and the maintenance efficiency of the equipment is effectively improved.

The embodiment displays the output voltages of the first sensor and the second sensor on the display device in real time so that maintenance personnel can check the output voltages in real time and find the abnormal condition of the axle counting magnetic head in time, and the maintenance efficiency of the equipment is effectively improved.

The following describes the axle counting magnetic head monitoring system provided by the present invention, and the axle counting magnetic head monitoring system described below and the axle counting magnetic head monitoring device described above can be referred to correspondingly.

As shown in fig. 2, the present embodiment provides an axle counting head monitoring system including a plurality of axle counting head monitoring devices.

A plurality of axle counting magnetic head monitoring devices are installed in a cabinet in a station room.

Optionally, a buckle is arranged on the back of each axle-counting magnetic head monitoring device, and the axle-counting magnetic head monitoring device is clamped in the cabinet through the buckle and is arranged in the cabinet in a guide rail type installation manner.

The cabinet is provided with an interface connected with a signal transmission cable of the outdoor axle counting magnetic head. The signal transmission cable of each axle-counting magnetic head is connected to the interface, and the axle-counting magnetic head monitoring system can monitor the output voltage of the first sensor and the second sensor of each axle-counting magnetic head and the state of each axle-counting magnetic head and give an alarm in time when the axle-counting magnetic heads are abnormal.

This embodiment is through setting up a plurality of meter axle magnetic head monitoring devices, can be with the working condition of the meter axle magnetic head of real time monitoring full line, has saved the cost of manpower inspection greatly.

On the basis of the above embodiment, the embodiment further includes a serial port module 6; and the plurality of axle counting magnetic head monitoring devices are in cascade communication through the serial port module 6.

The serial port module 6 comprises a serial port driver chip and a serial port EMS protection, the serial port driver chip is used for driving the serial port module 6, and the serial port EMS protection is used for performing electromagnetic protection on the serial port module 6.

Each axle counting magnetic head monitoring device can communicate through a serial port bus of the serial port module, and information sharing among the axle counting magnetic head monitoring devices is achieved.

Optionally, the serial port bus may be an RS485 bus, and the like, and this embodiment is not limited in particular.

The cascade communication may be cascade communication performed by the first comparator in each axle-counting magnetic head monitoring device, and the cascade communication may be cascade communication performed by the data storage module in each axle-counting magnetic head monitoring device, and the present embodiment is not limited to this cascade communication manner.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.