Track circuit compensation capacitor online monitoring system based on internet of things

Abstract

The utility model provides a kind of track circuit compensation capacitor on-line monitoring system based on internet of things, including current sensor, voltage sensor, control module and wireless communication module;The current sensor includes first probe, and the first probe includes first coil;The voltage sensor includes two second probes, and two second probes include induction electrode respectively;The control module includes first voltage conversion circuit, first current conversion circuit and main control chip, the input end of first current conversion circuit is electrically connected with current sensor, the input end of first voltage conversion circuit is electrically connected with voltage sensor, and the main control chip is triggered by first voltage conversion circuit or second current conversion circuit and enters working state, and the signal of first probe and second probe is sampled and filtered and then output to wireless communication module.The utility model can realize the on-line monitoring of compensation capacitor.

Description

Technical Field

[0001] This utility model relates to the field of railway signal monitoring, and more specifically, to an online monitoring system for track circuit compensation capacitors based on the Internet of Things. Background Technology

[0002] Track circuits consist of rails and rail insulation, used for automatic and continuous detection of track occupancy by locomotives and rolling stock. They also control signaling devices or switching devices to ensure traffic safety. To reduce the problem of insufficient signal transmission distance caused by rail inductance, track circuits incorporate equally spaced compensation capacitors to compensate for rail inductance in a segmented and centralized manner, minimizing the adverse effects of rail inductance on signal transmission. When a compensation capacitor fails, it causes a drop in the received voltage of the track circuit receiver. If multiple compensation capacitors fail simultaneously in the same section, the corresponding track relay in that section may trip, affecting transport efficiency.

[0003] For compensation capacitors, periodic inspections are currently conducted using integrated inspection vehicles and electrical inspection vehicles to confirm their operational status along the line. However, these methods, which rely on manual inspections and offline measurements, are inefficient, result in delayed detection, and occupy track maintenance windows. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide an online monitoring system for track circuit compensation capacitors based on the Internet of Things, addressing the issues of low efficiency and delayed detection caused by manual inspection and offline testing of the aforementioned track circuit compensation capacitors.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is to provide an online monitoring system for track circuit compensation capacitors based on the Internet of Things, including a current sensor, a voltage sensor, a control module and a wireless communication module, wherein the current sensor, the voltage sensor and the wireless communication module are electrically connected to the control module respectively.

[0006] The current sensor includes a first probe, and the first probe includes a first coil for being fitted onto any of the cables connected to the compensation capacitor; the voltage sensor includes two second probes, and the two second probes each include a sensing electrode for being disposed adjacent to the two cables connected to the compensation capacitor.

[0007] The control module includes a first voltage conversion circuit, a first current conversion circuit, and a main control chip. The input terminal of the first current conversion circuit is electrically connected to a current sensor, and the input terminal of the first voltage conversion circuit is electrically connected to a voltage sensor. The main control chip includes a first sampling terminal electrically connected to the output terminal of the voltage sensor, a second sampling terminal electrically connected to the output terminal of the current sensor, a first trigger terminal electrically connected to the output terminal of the first voltage conversion circuit, a second trigger terminal electrically connected to the first current conversion circuit, and an output terminal connected to a wireless communication module. The main control chip enters a working state when the voltage of the first trigger terminal exceeds a first preset range or the voltage of the second trigger terminal exceeds a second preset range, and samples and filters the signals from the first and second sampling terminals before outputting them to the wireless communication module through the output terminal.

[0008] As a further improvement of this utility model, the system includes a power supply module, which includes a current transformer, a rectifier circuit, a supercapacitor, and a boost regulator circuit. The current transformer includes a second coil fitted onto any cable used to connect a compensation capacitor. The rectifier circuit is connected between the second coil and the supercapacitor. The input terminal of the boost regulator circuit is electrically connected to the supercapacitor, and the output terminal is connected to the control module and the wireless communication module for power supply, respectively.

[0009] As a further improvement of this utility model, the power supply module includes a charge / discharge management circuit and a rechargeable battery. The input terminal of the charge / discharge management circuit is electrically connected to the output terminal of the boost regulator circuit, and the output terminal is electrically connected to the rechargeable battery.

[0010] As a further improvement of this utility model, the control module includes a crystal oscillator circuit, and the main control chip includes a crystal oscillator terminal electrically connected to the crystal oscillator circuit, and controls the frequency of the signals of the first sampling terminal and the second sampling terminal according to the signal of the crystal oscillator terminal.

[0011] As a further improvement of this utility model, the control module includes a second voltage conversion circuit, which is connected between the sensing electrodes of the two second probes and the first sampling terminal of the main control chip, and amplifies the induced voltage difference on the two sensing electrodes and outputs it to the first sampling terminal.

[0012] As a further improvement of this utility model, the second voltage conversion circuit includes a first amplifier, a second amplifier, a third amplifier, and a fourth amplifier. The non-inverting input terminal of the first amplifier is connected to a reference voltage, and the inverting input terminal is connected to a sensing electrode of the second probe. The non-inverting input terminal of the second amplifier is connected to the reference voltage, and the inverting input terminal is connected to another sensing electrode of the second probe. The non-inverting and inverting input terminals of the third amplifier are respectively connected to the output terminals of the first amplifier and the second amplifier. The non-inverting input terminal of the fourth amplifier is connected to the output terminal of the third amplifier, and the inverting input terminal is connected to the reference voltage. The output terminal of the fourth amplifier is connected to the first sampling terminal of the main control chip. The input terminal of the first voltage conversion circuit is electrically connected to the output terminal of the third amplifier.

[0013] As a further improvement of this utility model, the control module includes a second current conversion circuit, which is connected between the first coil of the first probe and the second sampling terminal of the main control chip, and converts the induced current of the first coil into voltage, amplifies it, and outputs it to the second sampling terminal.

[0014] As a further improvement of this utility model, the second current conversion circuit includes a fifth amplifier and a first resistor, a second resistor, and a third resistor connected in series between the non-inverting input terminal and the inverting input terminal of the fifth amplifier, and the two ends of the second resistor are respectively electrically connected to the two ends of the first coil of the first probe; the output terminal of the fifth amplifier is electrically connected to the second sampling terminal of the main control chip, and the input terminal of the first current conversion circuit is connected to the connection point of the first resistor and the second resistor.

[0015] As a further improvement of this utility model, the control module and the wireless communication module are integrated into the same printed circuit board, and the first probe and the second probe are electrically connected to the printed circuit board via cables respectively.

[0016] The system includes a strip-shaped housing, the printed circuit board is installed inside the strip-shaped housing, and the first probe and the second probe are located outside the strip-shaped housing respectively; the strip-shaped housing is installed with the gap between the two sleepers in a manner that is parallel to the length of the sleepers, and the two ends of the strip-shaped housing are respectively fixed to the two rails.

[0017] As a further improvement of this utility model, the control module includes a temperature sensor, and the main control chip includes a compensation signal terminal connected to the temperature sensor.

[0018] The present invention has the following advantages: the current and voltage of the compensation capacitor are obtained in a non-contact manner by using current sensors and voltage sensors, and the control module automatically samples and uploads the current and voltage when the current or voltage obtained by the current sensors and voltage sensors exceeds the preset range, thereby realizing online monitoring of the compensation capacitor. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the functional modules of the online monitoring system for track circuit compensation capacitors based on the Internet of Things provided in this embodiment of the utility model.

[0020] Figure 2 This is a functional module diagram of the control module in the Internet of Things-based online monitoring system for track circuit compensation capacitors provided in this embodiment of the utility model.

[0021] Figure 3 This is a circuit diagram of the main control chip and peripheral circuits in the Internet of Things-based online monitoring system for track circuit compensation capacitors provided in this embodiment of the utility model.

[0022] Figure 4 This is a circuit diagram of the first voltage conversion circuit in the Internet of Things-based online monitoring system for track circuit compensation capacitors provided in this embodiment of the utility model.

[0023] Figure 5 This is a circuit diagram of the first current conversion circuit in the Internet of Things-based online monitoring system for track circuit compensation capacitors provided in this embodiment of the utility model.

[0024] Figure 6 This is a circuit diagram of the second voltage conversion circuit in the online monitoring system for track circuit compensation capacitors based on the Internet of Things provided in this embodiment of the utility model.

[0025] Figure 7 This is a circuit diagram of the second current conversion circuit in the online monitoring system for track circuit compensation capacitors based on the Internet of Things provided in this embodiment of the utility model.

[0026] Figure 8 This is a schematic diagram of the power supply module in the Internet of Things-based online monitoring system for track circuit compensation capacitors provided in this embodiment of the utility model. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0028] like Figure 1The diagram shows a functional module schematic of an IoT-based online monitoring system for compensation capacitors in track circuits, provided in this embodiment of the present invention. This system can be applied to the online monitoring of compensation capacitors in track circuits. The IoT-based online monitoring system for compensation capacitors in track circuits of this embodiment includes a voltage sensor 11, a current sensor 12, a control module 13, and a wireless communication module 14. The voltage sensor 11, current sensor 12, and wireless communication module 14 are electrically connected to the control module 13. The control module 13 processes the voltage obtained by the voltage sensor 11 and the current obtained by the current sensor 12, and then transmits the data to a remote diagnostic server via the wireless communication module 14. The diagnostic server confirms the status of the compensation capacitor based on the received voltage and current signals and then takes further action (e.g., issuing an alarm). Both the wireless communication module 14 and the diagnostic server can adopt conventional solutions in the art, which will not be described in detail here.

[0029] The aforementioned current sensor 12 includes a first probe, combined with Figure 7 As shown, the first probe includes a first coil CT1, which is used to be fitted onto any cable connected to the compensation capacitor, such as a cable connected to the positive terminal of the compensation capacitor or a cable connected to the negative terminal of the compensation capacitor. Thus, during the charging or discharging process of the compensation capacitor, the first coil CT1 can generate an induced current and output it. That is, the first probe adopts a non-contact method to generate an analog current signal and output it based on the current flowing through the compensation capacitor.

[0030] Voltage sensor 11 includes two second probes, combined with Figure 6 As shown, the two second probes each include sensing electrodes CN1 and CN2, which are respectively positioned adjacent to two cables connecting to the compensation capacitor. For example, sensing electrode CN1 is adjacent to the cable connecting to the positive terminal of the compensation capacitor, and sensing electrode CN2 is adjacent to the cable connecting to the negative terminal of the compensation capacitor. Thus, sensing electrodes CN1 and CN2 can generate and output corresponding induced voltages based on the voltage changes of the two electrode plates of the compensation capacitor. That is, the voltage sensor 11 uses a non-contact method to output corresponding analog voltage signals based on the voltage changes of the compensation capacitor. Specifically, each second probe can adopt a structure combining a ceramic ring and a metal electrode. The ceramic ring is fitted onto the cable connecting to the compensation capacitor, thereby making the metal electrodes (i.e., sensing electrodes CN1 and CN2) adjacent to the cable.

[0031] like Figures 2-3 As shown, the control module 13 includes a first voltage conversion circuit 132, a first current conversion circuit 133, and a main control chip 131 (including...). Figure 3The chip U15 and its peripheral circuits are included. The input terminal of the first current conversion circuit 133 is electrically connected to the current sensor 12, and the input terminal of the first voltage conversion circuit 132 is electrically connected to the voltage sensor 11. The main control chip 131 includes a first sampling terminal electrically connected to the output terminal of the voltage sensor 11, a second sampling terminal electrically connected to the output terminal of the current sensor 12, a first trigger terminal electrically connected to the output terminal of the first voltage conversion circuit 132, a second trigger terminal electrically connected to the first current conversion circuit 133, and an output terminal connected to the wireless communication module 14. The main control chip 131 enters the working state when the voltage of the first trigger terminal exceeds the first preset range or the voltage of the second trigger terminal exceeds the second preset range. The main control chip 131 samples and filters the signals of the first sampling terminal and the second sampling terminal and outputs them to the wireless communication module 14 through the output terminal (i.e., the main control chip 131 integrates an ADC / DSP).

[0032] Those skilled in the art will understand that the electrical connections between the output terminal of the voltage sensor 11 and the first sampling terminal, the output terminal of the current sensor 12 and the second sampling terminal, the output terminal of the first voltage conversion circuit 132 and the first trigger terminal, the first current conversion circuit 133 and the second trigger terminal, and the output terminal of the main control chip 131 and the wireless communication module 14 can be direct or indirect, via intermediate circuits (e.g., amplification, filtering, current limiting circuits). Furthermore, the main control chip 131 can also process the sampled signals using software, such as bandwidth limiting, phase-locked demodulation, and filtering. The first and second preset ranges can be set in advance based on experience or experimental data.

[0033] The above-mentioned IoT-based online monitoring system for track circuit compensation capacitors obtains the current and voltage of the compensation capacitors in a non-contact manner through current sensor 12 and voltage sensor 11. When the current or voltage obtained by current sensor 12 and voltage sensor 11 exceeds the preset range, the control module 13 automatically samples and uploads the current and voltage. Online monitoring of the compensation capacitors can be achieved without network coverage, and the power consumption is relatively low.

[0034] like Figure 4 , Figure 5 As shown, the first voltage conversion circuit 132 and the first current conversion circuit 133 can filter, amplify, and process the analog signals output by the voltage sensor 11 and the current sensor 12, thereby generating a signal that can trigger the main control chip 131 to directly switch between sleep and working states. In practical applications, the voltage and current conversion of the first voltage conversion circuit 132 and the first current conversion circuit 133 can adopt conventional solutions in the art, which will not be described in detail here.

[0035] Because the track circuit is located in the field and on-site power supply coverage is limited, in one embodiment of this art, the above-mentioned IoT-based online monitoring system for track circuit compensation capacitors also includes a power supply module. For example... Figure 8 As shown, the power supply module includes a current transformer, a rectifier circuit, a supercapacitor, and a boost regulator circuit. The current transformer includes a second coil CT2 that is fitted onto any cable used to connect to the compensation capacitor. The rectifier circuit is connected between the second coil CT2 and the supercapacitor. The input terminal of the boost regulator circuit is electrically connected to the supercapacitor, and its output terminal is connected to the power supply terminals of the control module 13 and the wireless communication module 14 (i.e., connected to the power terminals of the control module 13 and the wireless communication module 14). The rectifier circuit and the boost regulator circuit can adopt conventional structures in the art, and will not be described in detail here.

[0036] The aforementioned power supply module uses a current transformer to generate an induced current from the microcurrent in the cable connecting the compensation capacitor. This induced current is then rectified and stored in a supercapacitor. A boost converter then converts the stored energy in the supercapacitor to power the control module and the wireless communication module. Since the control module 13 is in a dormant state when the compensation capacitor is functioning normally, its power consumption is low. Therefore, the power requirements of the IoT-based online monitoring system for track circuit compensation capacitors can be met solely through the power supply module, without requiring an external power network.

[0037] Specifically, to ensure continuous power supply, the power supply module also includes a charge / discharge management circuit and a rechargeable battery. One end of the charge / discharge management circuit is electrically connected to the output of the boost regulator circuit, and the other end is electrically connected to the rechargeable battery. In this way, when the supercapacitor's stored capacity reaches its maximum value, the boost regulator circuit and the charge / discharge management circuit can store excess energy in the rechargeable battery. When the supercapacitor's stored capacity is below its minimum value, the charge / discharge management circuit can supply power to the control module 13 and the wireless communication module 14 using the energy stored in the rechargeable battery.

[0038] In one embodiment of this utility model, the control module 13 further includes crystal oscillator circuits X1 and X3. Correspondingly, the main control chip 131 includes crystal oscillator terminals electrically connected to the crystal oscillator circuits X1 and X3, and the main control chip 131 can control the frequency of the signals of the first sampling terminal and the second sampling terminal according to the signals of the crystal oscillator terminals. For example, it can realize the synchronous detection and amplitude measurement of the 1.7 / 2.0 / 2.3 / 2.6kHz carrier frequency voltage of the voltage sensor.

[0039] Furthermore, the control module 13 may also include a temperature sensor, and correspondingly, the main control chip 131 includes a compensation signal terminal connected to the temperature sensor. Through this structure, temperature compensation can be achieved to improve the accuracy of compensation capacitor monitoring. The specific temperature compensation can employ conventional solutions in the art, which will not be elaborated upon here.

[0040] like Figure 2 As shown, in one embodiment of the present invention, the control module 13 further includes a second voltage conversion circuit 134, which is connected between the sensing electrodes of the two second probes and the first sampling terminal of the main control chip 131, and amplifies the induced voltage difference on the two sensing electrodes and outputs it to the first sampling terminal.

[0041] Specifically, such as Figure 6 As shown, the second voltage conversion circuit 134 includes a first amplifier U3-A, a second amplifier U3-B, a third amplifier U5-A, and a fourth amplifier U9. The non-inverting input of the first amplifier U3-A is connected to a reference voltage, and its inverting input is connected to one sensing electrode of the second probe. The non-inverting input of the second amplifier U3-B is connected to the reference voltage, and its inverting input is connected to the other sensing electrode of the second probe. The non-inverting and inverting inputs of the third amplifier U5-A are connected to the outputs of the first amplifier U3-A and the second amplifier U3-B, respectively. The non-inverting input of the fourth amplifier U9 is connected to the output of the third amplifier U5-A, and its inverting input is connected to the reference voltage. The output of the fourth amplifier U9 is connected to the first sampling terminal of the main control chip 131. The input of the first voltage conversion circuit 132 is electrically connected to the output of the third amplifier U5-A. In this manner, the second voltage conversion circuit 134 amplifies the voltage signal from the second probe, thereby meeting the input requirements of the main control chip 131.

[0042] like Figure 2 As shown, in one embodiment of the present invention, the control module 13 further includes a second current conversion circuit 135, which is connected between the first coil of the first probe and the second sampling terminal of the main control chip 131, and converts the induced current of the first coil into voltage, amplifies it and outputs it to the second sampling terminal.

[0043] Specifically, such as Figure 7 As shown, the second current conversion circuit 135 includes a fifth amplifier U17-B and a first resistor R61, a second resistor RI1, and a third resistor R71 connected in series between the non-inverting and inverting input terminals of the fifth amplifier. The two ends of the second resistor RI1 are electrically connected to the two ends of the first coil CT1 of the first probe. The output terminal of the fifth amplifier U17-B is electrically connected to the second sampling terminal of the main control chip 131. The second current conversion circuit 135 can convert the current signal of the first coil CT1 into a voltage signal and amplify it to meet the input requirements of the main control chip 131.

[0044] In one embodiment of this utility model, the control module 13 and the wireless communication module 14 are integrated into the same printed circuit board, and the first probe and the second probe are electrically connected to the printed circuit board via cables. Correspondingly, the above-mentioned IoT-based online monitoring system for track circuit compensation capacitors includes a strip-shaped housing, with the printed circuit board installed inside the strip-shaped housing, and the first probe and the second probe located outside the strip-shaped housing. The strip-shaped housing is installed with the gap between two sleepers parallel to the sleepers in its length direction, and both ends of the strip-shaped housing are fixed to two rails respectively. This method ensures the stability of the entire device structure and meets the requirements of the operating environment.

[0045] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. An online monitoring system for track circuit compensation capacitors based on the Internet of Things, characterized in that, It includes a current sensor, a voltage sensor, a control module, and a wireless communication module, wherein the current sensor, the voltage sensor, and the wireless communication module are electrically connected to the control module. The current sensor includes a first probe, and the first probe includes a first coil for being fitted onto any of the cables connected to the compensation capacitor; the voltage sensor includes two second probes, and the two second probes each include a sensing electrode for being disposed adjacent to the two cables connected to the compensation capacitor. The control module includes a first voltage conversion circuit, a first current conversion circuit, and a main control chip. The input terminal of the first current conversion circuit is electrically connected to a current sensor, and the input terminal of the first voltage conversion circuit is electrically connected to a voltage sensor. The main control chip includes a first sampling terminal electrically connected to the output terminal of the voltage sensor, a second sampling terminal electrically connected to the output terminal of the current sensor, a first trigger terminal electrically connected to the output terminal of the first voltage conversion circuit, a second trigger terminal electrically connected to the first current conversion circuit, and an output terminal connected to a wireless communication module. The main control chip enters a working state when the voltage of the first trigger terminal exceeds a first preset range or the voltage of the second trigger terminal exceeds a second preset range, and samples and filters the signals from the first and second sampling terminals before outputting them to the wireless communication module through the output terminal.

2. The online monitoring system for track circuit compensation capacitors based on the Internet of Things according to claim 1, characterized in that, The system includes a power supply module, which includes a current transformer, a rectifier circuit, a supercapacitor, and a boost regulator circuit. The current transformer includes a second coil that is fitted onto any cable used to connect a compensation capacitor. The rectifier circuit is connected between the second coil and the supercapacitor. The input terminal of the boost regulator circuit is electrically connected to the supercapacitor, and the output terminal is connected to the control module and the wireless communication module for power supply, respectively.

3. The online monitoring system for track circuit compensation capacitors based on the Internet of Things according to claim 2, characterized in that, The power supply module includes a charge / discharge management circuit and a rechargeable battery. One end of the charge / discharge management circuit is electrically connected to the output terminal of the boost regulator circuit, and the other end is electrically connected to the rechargeable battery.

4. The online monitoring system for track circuit compensation capacitors based on the Internet of Things according to any one of claims 1-3, characterized in that, The control module includes a crystal oscillator circuit, and the main control chip includes a crystal oscillator terminal electrically connected to the crystal oscillator circuit, and controls the frequency of the signals of the first sampling terminal and the second sampling terminal according to the signals of the crystal oscillator terminal.

5. The online monitoring system for track circuit compensation capacitors based on the Internet of Things according to any one of claims 1-3, characterized in that, The control module includes a second voltage conversion circuit, which is connected between the sensing electrodes of the two second probes and the first sampling terminal of the main control chip, and amplifies the induced voltage difference on the two sensing electrodes and outputs it to the first sampling terminal.

6. The online monitoring system for track circuit compensation capacitors based on the Internet of Things according to claim 5, characterized in that, The second voltage conversion circuit includes a first amplifier, a second amplifier, a third amplifier, and a fourth amplifier. The non-inverting input terminal of the first amplifier is connected to a reference voltage, and the inverting input terminal is connected to a sensing electrode of the second probe. The non-inverting input terminal of the second amplifier is connected to the reference voltage, and the inverting input terminal is connected to another sensing electrode of the second probe. The non-inverting and inverting input terminals of the third amplifier are respectively connected to the output terminals of the first amplifier and the second amplifier. The non-inverting input terminal of the fourth amplifier is connected to the output terminal of the third amplifier, and the inverting input terminal is connected to the reference voltage. The output terminal of the fourth amplifier is connected to the first sampling terminal of the main control chip. The input terminal of the first voltage conversion circuit is electrically connected to the output terminal of the third amplifier.

7. The online monitoring system for track circuit compensation capacitors based on the Internet of Things according to claim 5, characterized in that, The control module includes a second current conversion circuit, which is connected between the first coil of the first probe and the second sampling terminal of the main control chip. The second current conversion circuit converts the induced current of the first coil into a voltage, amplifies it, and outputs it to the second sampling terminal.

8. The online monitoring system for track circuit compensation capacitors based on the Internet of Things according to claim 7, characterized in that, The second current conversion circuit includes a fifth amplifier and a first resistor, a second resistor, and a third resistor connected in series between the non-inverting input terminal and the inverting input terminal of the fifth amplifier. The two ends of the second resistor are electrically connected to the two ends of the first coil of the first probe, respectively. The output terminal of the fifth amplifier is electrically connected to the second sampling terminal of the main control chip, and the input terminal of the first current conversion circuit is connected to the connection point of the first resistor and the second resistor.

9. The online monitoring system for track circuit compensation capacitors based on the Internet of Things according to claim 7, characterized in that, The control module and the wireless communication module are integrated into the same printed circuit board, and the first probe and the second probe are electrically connected to the printed circuit board via cables. The system includes a strip-shaped housing, the printed circuit board is installed inside the strip-shaped housing, and the first probe and the second probe are located outside the strip-shaped housing respectively; the strip-shaped housing is installed with the gap between the two sleepers in a manner that is parallel to the length of the sleepers, and the two ends of the strip-shaped housing are respectively fixed to the two rails.

10. The online monitoring system for track circuit compensation capacitors based on the Internet of Things according to claim 1, characterized in that, The control module includes a temperature sensor, and the main control chip includes a compensation signal terminal connected to the temperature sensor.

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