TGDXH-Ⅰ type track signal test equipment comprehensive calibration device

Abstract

This invention discloses the TGDXH-I type integrated calibration device for track signal testing equipment, comprising hardware and software systems: the hardware is centered around an electronic box, a PC, and a robot. The electronic box integrates output modules for voltage, current, and high-voltage pulse, as well as control and storage units; the software runs on multiple devices, supporting automatic / manual testing and data processing. Each output module can generate multiple types of signals: the voltage module covers a wide frequency band, with an output of 0-400V; the current module supports a large current of 0-20A; the high-voltage pulse module outputs a wavefront voltage of 0-800V (wavefront-to-tail ratio 3:1-8:1), all meeting the requirements of the new railway calibration regulations; the DC module outputs a high-precision signal of 1-250V. The robot, equipped with an industrial camera, automatically reads the data from the instrument being calibrated, achieving full-process automation in conjunction with the software, significantly reducing the calibration time of a single device and eliminating human error; the device adopts an integrated and modular design, significantly reducing its size and weight compared to traditional equipment, improving portability; the core components use high-precision chips, balancing performance, cost, and maintainability, with a user-friendly human-machine interface, adapting to the efficient and accurate calibration requirements of railway signal measuring instruments.

Description

Technical Field

[0001] This invention relates to the field of track signal instrument testing equipment technology, specifically to a TGDXH-Ⅰ type track signal testing equipment comprehensive verification device. Background Technology

[0002] Online track signal measuring instruments are key metrological equipment for ensuring the stable operation of railway signaling systems. They need to be calibrated regularly to ensure that their measurement accuracy meets the safety requirements for track signal transmission.

[0003] Existing calibration instruments cannot achieve automatic calibration. They require manual control of the instrument to output a specific railway model, followed by recording the data displayed on the online measuring instrument, and then performing verification and calculations. This calibration process is complex, time-consuming, and prone to errors due to manual recording, affecting the calibration results. Furthermore, the "Verification Regulations for Online Railway Track Signal Measuring Instruments" came into effect on January 29, 2022. The new regulations added the requirement for "high-voltage pulse track signal parameter measurement," but existing calibration instruments lack this function and cannot meet the metrological requirements of the new regulations. Summary of the Invention

[0004] The purpose of this invention is to overcome the above-mentioned technical defects and provide a comprehensive verification device for TGDXH-Ⅰ type track signal testing equipment.

[0005] To achieve the above objectives, this invention adopts the following technical solution: a TGDXH-Ⅰ type track signal testing equipment integrated verification device, comprising a hardware system and a software system. The hardware system includes an electronic box, a PC, a robot, and supporting test cables and calibration cables. The electronic box is equipped with a voltage output module, a current output module, a high-voltage pulse output module, a DC voltage output module, a communication control module, and a memory. The software system runs on the PC, the electronic box, and the robot, and has automatic testing, manual testing, and data processing functions. The voltage output module can output two channels of sinusoidal / FSK voltage signals, with an output range of 0-10V in the 6-24.99Hz frequency band and 0-400V in the 25-3000Hz frequency band, with a maximum permissible error of ±0.5% of the indicated value; the current output module can output one channel of sinusoidal / FSK high-current signal, with an output range of 0-20A, and a maximum permissible error of ±0.5% of the indicated value in the 25-3000Hz frequency band; the high-voltage pulse output module can output one channel of high-voltage pulse signal, with a wavefront voltage output range of 0-800V, a negative wavetail voltage, a wavefront-to-wavetail ratio between 3:1 and 8:1, and a maximum permissible error of ±0.5% of the wavefront voltage indicated value; the DC voltage output module can output one channel of 1-250V DC voltage signal, with a maximum permissible error of ±0.2% of the indicated value; The robot is equipped with a video recognition module, which is a high-precision industrial camera. It can automatically read the displayed values ​​of the measuring instrument being calibrated and feed them back to the software system. The software system can control each output module to output single-frequency signals, frequency-shift signals, 25Hz phase-sensitive signals, AC counting track signals, DC voltage signals, and high-voltage pulse track signals, so as to realize online equivalent testing of compensation capacitors and impedances, and automatically complete gear shifting, error calculation, data recording, and report generation and printing.

[0006] Furthermore, the voltage output module uses an AD9834DDS chip to generate a voltage signal, which is then amplified by the primary stage of an OPA2277 operational amplifier (to approximately 2.5V), and then amplified a second time by a PA88 high-voltage operational amplifier (to approximately 200V), outputting a standard voltage signal source. An AD5543 amplitude adjustment chip is provided between the OPA2277 operational amplifier and the PA88 high-voltage operational amplifier to adjust the signal amplitude. Relay circuits are also provided before and after the PA88 high-voltage operational amplifier to switch the operational amplifier amplification factor and output mode. It supports direct output or series output of 4 signals.

[0007] Furthermore, the current output module uses the AD9834DDS chip as the signal generation core. After being amplified by the OPA2277 operational amplifier, the signal is output as a standard source of current signal through a voltage / current conversion circuit composed of the OPA549 high-precision operational amplifier. An AD5543 amplitude adjustment chip is provided between the OPA2277 operational amplifier and the voltage / current conversion circuit to adjust the signal amplitude. Relay circuits are also provided before and after the OPA549 high-precision operational amplifier to adjust the operational amplifier amplification factor and output mode. When the output current signal is ≤1A, it is output directly. When the output current signal is >1A, it is amplified by a 1:20 transformer before output.

[0008] Furthermore, the circuit structure of the high-voltage pulse output module is consistent with that of the voltage output module. By adjusting the signal amplitude of the AD5543 chip and the frequency of the AD9834DDS chip through software, the high-voltage pulse waveform is divided into three time periods: high-voltage segment, low-voltage segment, and idle segment, which are output cyclically.

[0009] Furthermore, the DC voltage output module includes a DAC8562 16-bit digital-to-analog converter and a PA88 operational amplifier. The DAC8562 16-bit digital-to-analog converter is used to generate a controllable DC voltage signal. It is connected to the input side of the PA88 operational amplifier and directly outputs a 0-250V DC voltage signal through two PA88 operational amplifiers connected in series.

[0010] Furthermore, the communication control module uses an STM32F407VET6 microcontroller as the main control CPU and communicates with the PC via an RS485 bus to realize instruction transmission and data interaction between the PC and the electronic box.

[0011] Furthermore, it includes 92+4KB of SRAM and an external EPROM to store calibration data.

[0012] Furthermore, the online equivalent test measurement range of the compensation capacitor is 20-100μF, with a maximum permissible error of ±1% of the indicated value; the online equivalent impedance test measurement range is 0-1000Ω; standard voltage and current signals are output through the voltage and current output modules respectively to directly simulate the online working state of the compensation capacitor and impedance, and the equivalent capacitance value is calculated according to the formula I=2πfCU, where I is current, f is frequency, U is voltage, and C is capacitance; the equivalent resistance value is calculated according to the formula I=U / R, where I is current, U is voltage, and R is resistance.

[0013] Furthermore, the software system includes PC software, electronic box software, and robot software. The PC software includes instrument testing, error setting, system parameter setting, test record management, and metrological traceability. The instrument testing includes automatic testing and manual testing, and is used to control the lower-level machine to run the lower-level machine software to output single-frequency signals, frequency-shift signals, 25Hz phase-sensitive signals, AC counting track signals, DC voltage signals, and high-voltage pulse track signals. The test record management includes viewing test records, deleting test records, exporting reports, previewing reports, and directly printing reports. The metrological traceability includes voltage channel traceability, current channel traceability, and high-voltage pulse channel traceability. Furthermore, the lower-level software includes voltage signal output software, current signal output software, high-voltage pulse signal output software, and DC voltage signal output software, which are used to generate corresponding signal outputs in response to PC commands; the robot software includes instrument recognition software and robotic arm control software. The robot's video recognition module is equipped with instrument recognition software to read information from the calibrated measuring instrument, and the robot's robotic arm is equipped with control software, which controls the robotic arm's movements to switch the test interface of the calibrated measuring instrument by sending commands from the PC.

[0014] Furthermore, the automatic testing process of the software system includes: after receiving user instructions, controlling the robot to switch the calibrated measuring instrument to the corresponding test interface, driving each output module to output standard signals, reading the measured values ​​through the video recognition module, calculating the error and judging the pass / fail status, automatically recording all measurement point data, and generating a test report that can be exported, previewed and printed after completing all tests; the error judgment rule is: if the number of unqualified errors of a single measurement point exceeds 5, the point is judged to be unqualified.

[0015] The beneficial effects of this invention are as follows: This invention integrates a high-voltage pulse track signal output module, which is the same as the voltage output module in terms of circuit structure. It only adjusts the signal amplitude of the AD5543 chip and the frequency of the AD9834DDS chip through software to divide the high-voltage pulse waveform into a high-voltage segment, a low-voltage segment, and an idle segment. It can output a high-voltage pulse signal with a wavefront voltage of 0~800V and a wavefront-to-tail ratio of 3:1~8:1, which fully covers the newly added verification items in the "Verification Regulations for Online Measurement Instruments of Railway Track Signals" (JJG (Railway) 702-2021). By combining a robot with a video recognition module, the entire process of "automatically switching test interfaces, automatically reading the displayed values ​​of the instrument being calibrated, and automatically completing gear shifting / error calculation / data recording" is fully automated, thereby simplifying the calibration process, shortening the calibration time, and improving work efficiency. In conjunction with the automatic report generation function of the PC software, it also avoids errors from manual reading and recording, and improves the accuracy of the calibration results. The device integrates modules such as voltage, current, high-voltage pulse, and DC voltage into an electronic box, which greatly reduces the size and weight of the equipment compared to traditional distributed equipment, and improves the portability of the equipment. The PC software of this device uses a Windows operating system, which facilitates programming and debugging, report generation and printing, and has good human-computer interaction functions. The lower-level electronic box uses highly integrated chips to complete multiple tasks such as system control, data acquisition, signal generation, and communication with a few chips. This helps to improve the performance-price ratio of the device, reduce size and power consumption, reduce failure rate, and facilitate device upgrades. The AD9834DDS circuit is used as the signal generation source, and high-precision devices such as PA88 high-voltage operational amplifiers are used for amplification and conversion to generate various voltage and current signals used for verification. The plug-in modular structure facilitates design and implementation, as well as maintenance and expansion. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the integrated verification device for the TGDXH-Ⅰ type track signal testing equipment of the present invention; Figure 2 This is a block diagram of the software system of the integrated verification device for the TGDXH-Ⅰ type track signal testing equipment of the present invention; Figure 3 This is a circuit diagram of the voltage output module and the DC voltage output module; Figure 4 This is a hardware block diagram of the voltage output module; Figure 5 This is the software flowchart for voltage signal output; Figure 6 This is the circuit diagram of the current output module; Figure 7 This is the hardware block diagram of the current output module; Figure 8This is the software flowchart for current signal output; Figure 9 This is a hardware block diagram of the high-voltage pulse output module; Figure 10 This is the software flowchart for high-voltage pulse signal output; Figure 11 This is a hardware block diagram of the DC voltage output module; Figure 12 This is a hardware block diagram of the DC voltage output module; Figure 13 This is a flowchart of the PC software startup process; Figure 14 This is a flowchart for automatic single-frequency voltage testing; Figure 15 This is a waveform diagram of a high-voltage pulse track signal. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention are within the scope of protection of the present invention.

[0018] An embodiment of the present invention: The TGDXH-Ⅰ type track signal testing equipment integrated verification device includes a hardware system and a software system, such as... Figure 1 As shown, the hardware system includes an electronic box, a PC, a robot, and supporting test cables and calibration cables. The electronic box contains a voltage output module, a current output module, a high-voltage pulse output module, a DC voltage output module, a communication control module, and a memory. Through these output modules, high-precision single-frequency signals, frequency-shift signals, 25Hz phase-sensitive signals, AC counting track signals, high-voltage pulse track signals, DC voltage signals, and other test signals can be output. The robot includes a robotic arm and a video recognition module. The video recognition module is a high-precision industrial camera (CCD camera) that can automatically read the displayed value of the instrument being calibrated and feed it back to the software system. It also uses a planar shadowless light source to solve the problem of inaccurate recognition due to the backlight not being on. The PC, through its software system, can control each output module to output the required railway signals, enabling single-frequency testing, frequency shift testing, ZPW2000 testing, DC voltage testing, high-voltage pulse testing, AC counting track signal testing, 25Hz phase-sensitive track signal testing, and online equivalent testing of compensation capacitors and impedance. It can also automatically complete gear shifting, error calculation, data recording, and report generation and printing.

[0019] The voltage output module can output two channels of sinusoidal / FSK voltage signals, with an output range of 0-10V in the 6-24.99Hz frequency band and 0-400V in the 25-3000Hz frequency band, with a maximum permissible error of ±0.5% of the indicated value; Figure 3 , 4 The circuit uses an AD9834DDS chip to generate a voltage signal, which is then amplified by the primary stage of an OPA2277 operational amplifier (to about 2.5V), and then amplified a second time by a PA88 high-voltage operational amplifier (to about 200V), outputting a standard voltage signal source. An AD5543 amplitude adjustment chip is provided between the OPA2277 operational amplifier and the PA88 high-voltage operational amplifier to adjust the signal amplitude. Relay circuits are also provided before and after the PA88 high-voltage operational amplifier to switch the operational amplifier amplification factor and output mode. It supports direct output or series output of 4 signals.

[0020] The current output module can output one channel of sinusoidal / FSK high-current signal, with an output range of 0-20A and a maximum permissible error of ±0.5% of the indicated value in the 25-3000Hz frequency band; Figure 6 , 7 As shown, the circuit uses the AD9834DDS chip as the signal generation core. After being amplified by the OPA2277 operational amplifier, it outputs a standard current signal source through a voltage / current conversion circuit composed of the OPA549 high-precision operational amplifier. An AD5543 amplitude adjustment chip is provided between the OPA2277 operational amplifier and the voltage / current conversion circuit to adjust the signal amplitude. Relay circuits are also provided before and after the OPA549 high-precision operational amplifier to adjust the operational amplifier amplification factor and output mode. When the output current signal is ≤1A, it is directly output. When the output current signal is >1A, it is amplified by a 1:20 transformer before output.

[0021] The high-voltage pulse output module can output one channel of high-voltage pulse signal, with a wavefront voltage output range of 0-800V, a negative wavetail voltage, a wavefront-to-wavetail ratio between 3:1 and 8:1, and a maximum permissible error between the wavefront and wavetail voltages of ±0.5% of the wavefront voltage reading. Figure 9 As shown, its circuit structure is consistent with the voltage output module. By adjusting the signal amplitude of the AD5543 chip and the frequency of the AD9834DDS chip through software, the high voltage pulse waveform is divided into three time periods: high voltage segment, low voltage segment, and idle segment, which are output cyclically.

[0022] The DC voltage output module can output one channel of 1-250V DC voltage signal, with a maximum permissible error of ±0.2% of the indicated value; for example... Figure 3 , 11As shown, its circuit includes the DC voltage output module, which includes a DAC8562 16-bit digital-to-analog converter and a PA88 operational amplifier. The DAC8562 16-bit digital-to-analog converter is used to generate a controllable DC voltage signal. It is connected to the input side of the PA88 operational amplifier and directly outputs a 0-250V DC voltage signal through two PA88 operational amplifiers connected in series.

[0023] The communication control module uses an STM32F407VET6 microcontroller as the main control CPU and communicates with the PC via an RS485 bus to realize instruction transmission and data interaction between the PC and the electronic box.

[0024] It includes 192+4KB of SRAM and an external EPROM to store calibration data.

[0025] The online equivalent test of the compensation capacitor and the online equivalent test of the impedance directly simulate the online working state of the compensation capacitor and the impedance by outputting standard voltage signals and standard current signals through the voltage output module and the current output module, respectively.

[0026] like Figure 2 As shown, the software system includes PC software, lower-level software, and robot software. The PC software includes instrument testing, error setting, system parameter setting, test record management, and metrological traceability. The instrument testing includes automatic testing and manual testing, and is used to control the lower-level software to output single-frequency signals, frequency-shift signals, 25Hz phase-sensitive signals, AC counting track signals, DC voltage signals, and high-voltage pulse track signals. The test record management includes viewing test records, deleting test records, exporting reports, previewing reports, and directly printing reports. The metrological traceability includes voltage channel traceability, current channel traceability, and high-voltage pulse channel traceability. The lower-level software includes voltage signal output software, current signal output software, high-voltage pulse signal output software, and DC voltage signal output software, which are used to generate corresponding signal outputs in response to PC commands. The robot software includes instrument recognition software and robotic arm control software. The robot's video recognition module is equipped with instrument recognition software to read information from the calibrated measuring instrument. The robot's robotic arm is equipped with control software, which controls the robotic arm's movements to switch the test interface of the calibrated measuring instrument by sending commands from the PC.

[0027] In practical use, the automatic test can automatically complete the test of multiple sets of data, automatically record the data, and the comprehensive verification device sets the test items → outputs the standard source signal → identifies the reading of the calibrated table through video recognition → and feeds back to the comprehensive verification device.

[0028] ① Single-frequency test The tester first connects the equipment correctly, then selects the single-frequency test option. The test equipment outputs a single-frequency signal, the device under test acquires the output signal, and displays the test results.

[0029] ② Frequency shift signal test The tester first connects the equipment correctly, then selects the frequency shift test option. The test equipment outputs a frequency shift signal, the device under test acquires the output signal, and displays the test results.

[0030] ③ 25Hz phase-sensitive signal test The tester first connects the equipment correctly, then selects the 25Hz phase-sensitive test option. The test equipment outputs two 25Hz sine wave signals with a phase difference. The device under test collects the output signals and displays the test results.

[0031] ③ AC counting track signal test The tester first connects the equipment correctly, then selects the AC counting test option. The test equipment outputs a customized AC counting signal, and the device under test acquires the output signal and displays the test results.

[0032] ④ High-voltage pulse track signal The tester first connects the equipment correctly, then selects the high-voltage pulse test option. The test equipment outputs a high-voltage pulse signal, the device under test acquires the output signal, and displays the test results.

[0033] The required high-voltage pulse signal waveform is as follows: Figure 15 As shown, we output in two parts. The first part is the wavefront part t1. After the wavefront signal is output, the wave tail part t2 is output. Then we wait for a time interval t3 and output the wavefront signal again. This process continues in a loop.

[0034] ⑥ DC voltage signal test The DC voltage signal is a DC voltage signal ranging from 0 to 250V.

[0035] ⑦ Compensation capacitor test The measurement range should cover 20-100μF. The measurement of the compensation capacitor by the device under test is performed in an online equivalent circuit mode, which means measuring the voltage and current of the compensation capacitor online at a defined operating frequency (1700Hz-2600Hz frequency deviation ±11Hz low-frequency modulation signal for track circuits without insulation joints), calculating its equivalent capacitance value, and displaying it in the form of capacitance value.

[0036] The integrated verification device also adopts an online environment that simulates a standard compensation capacitor: one output voltage signal (FSK) and one output current signal (FSK). The device under test measures both signals simultaneously and then calculates the capacitance value.

[0037] In AC circuits, the formulas for calculating capacitance, voltage, current, and frequency are as follows: I = U / Xc Xc = 1 / (2πfC) I = 2πfCU or U = I / (2πfC) I: Electric current, unit: A f: Frequency, in Hz U: Voltage, unit V C: Capacitance of capacitor, unit F ⑧ Impedance test For online impedance measurement, the measurement range should cover 0-1000Ω. Therefore, the integrated calibration device also adopts an online environment simulating a standard compensation resistor: one output voltage signal (FSK) and one output current signal (FSK). The device under test measures both signals simultaneously and then calculates the resistance value.

[0038] In AC circuits, the formulas for calculating resistance, voltage, and current are as follows: I = U / R I: Electric current, unit: A U: Voltage, unit V R: Resistance, unit: Ω Taking single-frequency testing as an example (e.g.) Figure 14 As shown): The automatic testing process of the software system includes: after receiving user instructions, controlling the robot to switch the calibrated measuring instrument to the corresponding test interface, driving each output module to output standard signals, reading the measurement value through the video recognition module, calculating the error and judging the pass / fail status, automatically recording all measurement point data, and generating a test report that can be exported, previewed and printed after completing all tests; the error judgment rule is: if the number of unqualified errors of a single measurement point exceeds 5, the point is judged to be unqualified.

Claims

1. The TGDXH-Ⅰ type track signal testing equipment integrated verification device, characterized in that: It includes a hardware system and a software system. The hardware system includes an electronic box, a PC, a robot, and supporting test cables and calibration cables. The electronic box is equipped with a voltage output module, a current output module, a high-voltage pulse output module, a DC voltage output module, a communication control module, and a memory. The software system runs on the PC, the electronic box, and the robot, and has automatic testing, manual testing, and data processing functions. The voltage output module can output two channels of sinusoidal / FSK voltage signals, with an output range of 0-10V in the 6-24.99Hz frequency band and 0-400V in the 25-3000Hz frequency band, with a maximum permissible error of ±0.5% of the indicated value; the current output module can output one channel of sinusoidal / FSK high-current signal, with an output range of 0-20A, and a maximum permissible error of ±0.5% of the indicated value in the 25-3000Hz frequency band; the high-voltage pulse output module can output one channel of high-voltage pulse signal, with a wavefront voltage output range of 0-800V, a negative wavetail voltage, a wavefront-to-wavetail ratio between 3:1 and 8:1, and a maximum permissible error of ±0.5% of the wavefront voltage indicated value; the DC voltage output module can output one channel of 1-250V DC voltage signal, with a maximum permissible error of ±0.2% of the indicated value; The robot is equipped with a video recognition module, which is a high-precision industrial camera. It can automatically read the displayed values ​​of the measuring instrument being calibrated and feed them back to the software system. The software system can control each output module to output single-frequency signals, frequency-shift signals, 25Hz phase-sensitive signals, AC counting track signals, high-voltage pulse track signals, and DC voltages. It can realize online equivalent testing of compensation capacitors and impedances, and automatically complete gear shifting, error calculation, data recording, and report generation and printing.

2. The TGDXH-Ⅰ type track signal testing equipment integrated verification device according to claim 1, characterized in that: The voltage output module uses an AD9834DDS chip to generate a voltage signal, which is then amplified by the primary stage of an OPA2277 operational amplifier and further amplified by a PA88 high-voltage operational amplifier to output a standard voltage signal source. An AD5543 amplitude adjustment chip is provided between the OPA2277 operational amplifier and the PA88 high-voltage operational amplifier to adjust the signal amplitude. Relay circuits are also provided before and after the PA88 high-voltage operational amplifier to switch the operational amplifier amplification factor and output mode. It supports direct output or series output of 4 signals.

3. The TGDXH-Ⅰ type track signal testing equipment integrated verification device according to claim 2, characterized in that: The current output module uses the AD9834DDS chip as the signal generation core. After being amplified by the OPA2277 operational amplifier, the signal is converted into a voltage / current conversion circuit composed of the OPA549 high-precision operational amplifier to output a standard current signal source. An AD5543 amplitude adjustment chip is provided between the OPA2277 operational amplifier and the voltage / current conversion circuit to adjust the signal amplitude. Relay circuits are also provided before and after the OPA549 high-precision operational amplifier to adjust the operational amplifier amplification factor and output mode. When the output current signal is ≤1A, it is output directly. When the output current signal is >1A, it is amplified by a 1:20 transformer before being output.

4. The TGDXH-Ⅰ type track signal testing equipment integrated verification device according to claim 2, characterized in that: The circuit structure of the high-voltage pulse output module is the same as that of the voltage output module. By adjusting the signal amplitude of the AD5543 chip and the frequency of the AD9834DDS chip through software, the high-voltage pulse waveform is divided into three time periods: high voltage segment, low voltage segment, and idle segment, which are output cyclically.

5. The TGDXH-Ⅰ type track signal testing equipment integrated verification device according to claim 2, characterized in that: The DC voltage output module includes a DAC8562 16-bit digital-to-analog converter and a PA88 operational amplifier. The DAC8562 16-bit digital-to-analog converter is used to generate a controllable DC voltage signal. It is connected to the input side of the PA88 operational amplifier and directly outputs a 0-250V DC voltage signal through two PA88 operational amplifiers connected in series.

6. The TGDXH-Ⅰ type track signal testing equipment integrated verification device according to claim 1, characterized in that: The communication control module uses an STM32F407VET6 microcontroller as the main control CPU and communicates with the PC via an RS485 bus to realize instruction transmission and data interaction between the PC and the electronic box.

7. The TGDXH-Ⅰ type track signal testing equipment integrated verification device according to claim 1, characterized in that: The memory includes 192+4KB of SRAM, as well as an external EPROM to store calibration data.

8. The TGDXH-Ⅰ type track signal testing equipment integrated verification device according to claim 3, characterized in that: The online equivalent test of the compensation capacitor has a measurement range of 20-100μF and a maximum permissible error of ±1% of the indicated value; the online equivalent test of the impedance has a measurement range of 0-1000Ω; standard voltage and current signals are output through the voltage output module and current output module respectively to directly simulate the online working state of the compensation capacitor and impedance, and the equivalent capacitance value is calculated according to the formula I=2πfCU, where I is the current, f is the frequency, U is the voltage, and C is the capacitance. The equivalent resistance value is calculated using the formula I=U / R, where I is the current, U is the voltage, and R is the resistance value.

9. The TGDXH-Ⅰ type track signal testing equipment integrated verification device according to claim 1, characterized in that: The software system includes PC software, lower-level software, and robot software. The PC software includes instrument testing, error setting, system parameter setting, test record management, and metrological traceability. The instrument testing includes automatic testing and manual testing, and is used to control the lower-level software to output single-frequency signals, frequency-shift signals, 25Hz phase-sensitive signals, AC counting track signals, DC voltage signals, and high-voltage pulse track signals. The test record management includes viewing test records, deleting test records, exporting reports, previewing reports, and directly printing reports. The metrological traceability includes voltage channel traceability, current channel traceability, and high-voltage pulse channel traceability. The lower-level software includes voltage signal output software, current signal output software, high-voltage pulse signal output software, and DC voltage signal output software, which are used to generate corresponding signal outputs in response to PC commands. The robot software includes instrument recognition software and robotic arm control software. The robot's video recognition module is equipped with instrument recognition software to read information from the calibrated measuring instrument. The robot's robotic arm is equipped with control software, which controls the robotic arm's movements to switch the test interface of the calibrated measuring instrument by sending commands from the PC.

10. The TGDXH-Ⅰ type track signal testing equipment integrated verification device according to claim 1, characterized in that: The automatic testing process of the software system includes: after receiving user instructions, controlling the robot to switch the calibrated measuring instrument to the corresponding test interface, driving each output module to output standard signals, reading the measured values ​​through the video recognition module, calculating the error and judging the pass / fail status, automatically recording all measurement point data, and generating a test report that can be exported, previewed and printed after completing all tests; the error judgment rule is: if the number of unqualified errors of a single measurement point exceeds 5, the point is judged to be unqualified.

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