Train operation control equipment testing device

Abstract

A train operation control equipment testing device relates to the field of train operation control equipment detection and maintenance. The problems that two special testing devices need to be purchased for a train operation monitoring and recording device and a locomotive signal vehicle-mounted system device, resources are wasted, and the testing devices are large in size and high in price are solved. According to the device, one end of a communication unit is connected with a computer, and the other end of the communication unit is connected with a train operation monitoring and recording device testing unit, a locomotive signal vehicle-mounted system equipment testing unit and a power supply unit; the train operation monitoring and recording device test unit is used for providing test conditions for the train operation monitoring and recording device to be tested and collecting analog quantity, switching quantity and communication data output by the train operation monitoring and recording device to be tested; the locomotive signal vehicle-mounted system equipment test unit is used for providing test conditions for the tested locomotive signal vehicle-mounted system equipment and collecting analog quantity, switching quantity and communication data output by the tested locomotive signal vehicle-mounted system equipment. The method is applied to train operation control.

Description

Technical Field

[0001] The utility model relates to the field of detection and maintenance of train operation control equipment. Background Art

[0002] The train operation monitoring and recording device and the on-board locomotive signal system equipment both belong to train operation control equipment and are also core technical equipment for controlling train operation. Whether their functions are normal and whether their performance indicators meet technical requirements are directly related to train operation safety. According to the "Rules for the Operation and Maintenance of Train Operation Monitoring Device (LKJ)", the "Maintenance Regulations for On-board Locomotive Signal System Equipment of JT-C", and the specific operation guidance requirements of each railway administration group company, the equipment maintenance section of the on-board equipment workshop of the signal and communication section uses a test device to detect, maintain, and conduct acceptance tests before installation on the train for the train operation monitoring and recording device and the on-board locomotive signal system equipment. At present, the widely used test devices for the train operation monitoring and recording device and the on-board locomotive signal system equipment are all independent dedicated test devices, that is, the train operation monitoring and recording device uses its dedicated test device, and the on-board locomotive signal system equipment also uses its dedicated test device, and the volumes of both devices are relatively large. This brings the following problems:

[0003] (1) Two dedicated test devices need to be purchased for the train operation monitoring and recording device and the on-board locomotive signal system equipment. Once a test device fails and is sent back to the factory for repair, it will affect the normal production order of the on-board equipment workshop of the signal and communication section. Purchasing multiple units of each test device will cause waste of resources;

[0004] (2) Each of the two test devices needs to occupy an independent detection table in the equipment maintenance section of the on-board equipment workshop of the signal and communication section, and usually each is equipped with an independent test personnel, resulting in duplicate configuration of resources and personnel;

[0005] (3) The volumes of the two test devices are relatively large and the prices are relatively high. The signal and communication section only configures them in the equipment maintenance section of the on-board equipment workshop, while the off-site detection points under the on-board equipment workshop are not equipped with the two test devices, resulting in the off-site detection points being unable to detect in a timely manner and find the cause of the failure of the train operation monitoring and recording device and the on-board locomotive signal system equipment to be installed on the train or taken off the train due to failure, posing a hidden danger to the operation safety of the train. Content of the Utility Model

[0006] In view of the problems that two dedicated test devices need to be purchased for the train operation monitoring and recording device and the on-board locomotive signal system equipment, which is likely to cause waste of resources, duplicate configuration of personnel, and the relatively large volumes and high prices of the two test devices, the utility model provides a test device for train operation control equipment, and the device includes:

[0007] A computer, a communication unit, a power supply unit, a test unit for train operation monitoring and recording device, and a test unit for on-board locomotive signal system equipment;

[0008] One end of the communication unit is connected to a computer through a USB, Ethernet or serial communication interface, and the other end of the communication unit is connected to a train operation monitoring and recording device test unit, a on-board locomotive signal system device test unit, and a power supply unit through a CAN bus or a serial communication interface; the train operation monitoring and recording device test unit is used to provide test conditions for the train operation monitoring and recording device to be tested, and collect analog quantities, switch quantities and communication data output by the train operation monitoring and recording device to be tested and send them to the test system;

[0009] The on-board locomotive signal system device test unit is used to provide test conditions for the on-board locomotive signal system device to be tested, and collect analog quantities, switch quantities and communication data output by the on-board locomotive signal system device to be tested and send them to the test system.

[0010] Furthermore, a preferred method is also proposed. The train operation monitoring and recording device test unit includes an analog quantity module, a digital quantity module, a communication module I, a display measurement module and at least one microcontroller;

[0011] The microcontroller is connected to the analog quantity module, the digital quantity module, the communication module I, and the display measurement module, and is used to send signals to the analog quantity module, the digital quantity module, the communication module I, and the display measurement module;

[0012] The analog quantity module includes a speed pulse signal output circuit, a track circuit signal output circuit, a diesel engine speed signal output circuit, a primary side voltage and current signal output circuit, and a pressure sensor signal output circuit;

[0013] The speed pulse signal output circuit is used to receive the signal sent by the microcontroller and output a square wave pulse or a sine signal to the device to be tested, simulating the output signal of a locomotive speed sensor; the track circuit signal output circuit is used to receive the signal sent by the microcontroller and output an FSK signal with adjustable frequency or amplitude to the device to be tested, for simulating the track circuit signal transmitted in the rail; the diesel engine speed signal output circuit is used to receive the signal sent by the microcontroller and output a sine wave signal with adjustable frequency to the device to be tested, for simulating the output signal of a diesel engine speed sensor of a diesel locomotive; the primary side voltage and current signal output circuit is used to receive the signal sent by the microcontroller and output a 50Hz sine wave signal with adjustable amplitude to the device to be tested, for simulating the output signal of a primary side voltage and current sensor of an electric locomotive; the pressure sensor signal output circuit is used to receive the signal sent by the microcontroller and output a DC voltage signal with adjustable amplitude to the device to be tested, for simulating the output signal of a locomotive pressure sensor.

[0014] The digital quantity module is used to receive a control signal and output a voltage switch quantity to the device to be tested;

[0015] The first communication module is connected to the communication interface of the device under test, sends data to the device under test to simulate communication, and receives the communication data of the device under test to monitor the output of the device under test;

[0016] The display measurement module is used to monitor the communication between the display of the train operation monitoring and recording device and the host of the train operation monitoring and recording device, and collect the working voltage and current of the display.

[0017] Furthermore, a preferred method is also proposed. The pressure sensor signal output circuit includes an optocoupler and a PWM analog-to-digital converter; the pulse-width adjustable signal PWM1 output by the microcontroller is isolated by the optocoupler and then outputs the pulse-width adjustable signal PWM2, and the pulse-width adjustable signal PWM2 is input to the PWM analog-to-digital converter to be converted into a DC voltage signal and output to the device under test.

[0018] Furthermore, a preferred method is also proposed. The digital quantity module includes a 110V voltage switch quantity output circuit, a 110V input circuit, and a 48V voltage switch quantity output circuit;

[0019] The 110V voltage switch quantity output circuit is composed of optocouplers and is used to output a switch quantity with a high level of at least 138V to the device under test to simulate the locomotive control conditions;

[0020] The 110V input circuit is composed of voltage-dividing resistors and optocouplers and is used to collect the switch quantity output with a high level of at least 138V output by the device under test;

[0021] The 48V voltage switch quantity output circuit is composed of optocouplers and is used to output a switch quantity with a high level of at least 60V to the device under test to simulate the locomotive signal control conditions.

[0022] Furthermore, a preferred method is also proposed. The communication module includes a CAN communication circuit, an RS485 communication circuit, and an RS232 communication circuit; the CAN communication circuit is composed of a CAN transceiver and a digital isolator or an optocoupler, the RS485 communication circuit is composed of an RS485 transceiver and a digital isolator or an optocoupler, and is used to be connected to the communication interface of the device under test, send data to the device under test to simulate communication, and receive the communication data of the device under test to monitor the output of the device under test; the RS232 communication circuit is composed of an RS232 transceiver and is used to calibrate the time of the device under test.

[0023] Furthermore, a preferred method is also proposed. The locomotive signal on-vehicle system equipment test unit includes a track circuit signal generation and feedback module, a parallel port voltage sampling module, a switch quantity input and output module, a second communication module, and at least one microcontroller;

[0024] The microcontroller is connected to the track circuit signal generation and feedback module, the parallel port voltage sampling module, the digital input and output module, and the communication module II;

[0025] The track circuit signal generation and feedback module includes a track circuit signal generation and range adjustment circuit and a track circuit signal feedback sampling circuit;

[0026] The track circuit signal generation and range adjustment circuit is used to receive the signal sent by the microcontroller and generate a track circuit standard signal with adjustable frequency and amplitude;

[0027] The track circuit signal feedback sampling circuit is used to collect the track circuit signal fed back by the device under test;

[0028] The parallel port voltage sampling module is used to collect the output signal voltage of the device under test and output test conditions to the device under test;

[0029] The digital input and output module is used to collect the digital signal output by the device under test;

[0030] The communication module II is used to monitor the CAN communication data and RS485 or RS422 communication data of the device under test, and also send simulated TAX box information to the device under test.

[0031] Further, a preferred method is also proposed. The track circuit signal feedback sampling circuit consists of an isolation amplifier and an analog-to-digital converter ADC. The track circuit signal fed back by the device under test is isolated and input into the differential input analog-to-digital converter ADC through a 1:1 isolation amplifier for analog-to-digital conversion, and the converted data is output to the microcontroller through serial communication.

[0032] Further, a preferred method is also proposed. The parallel port voltage sampling module consists of a voltage-dividing resistor, an operational amplifier, an analog-to-digital converter ADC, and a digital isolator; the voltage-dividing resistor R1 and the voltage-dividing resistor R2 divide the input signal to the acquisition voltage range of the analog-to-digital converter ADC; the operational amplifier is used for impedance matching; the ADC performs analog-to-digital conversion, and the output serial communication data is isolated by the digital isolator and then output to the microcontroller.

[0033] Further, a preferred method is also proposed. The digital input and output module includes a digital input circuit and a digital output circuit; the digital input circuit consists of a voltage-dividing resistor and an optocoupler and is used to collect the digital signal output by the device under test; the digital output circuit consists of a driver and a relay and is used to output test conditions to the device under test under the control of the test system.

[0034] Furthermore, a preferred method is also proposed. The device further includes an adjustable power supply, which includes an AC 220V to DC adjustable switching power supply for providing a working power supply to the device under test.

[0035] The advantages of the present invention are as follows:

[0036] (1) It can perform functional and performance index tests on train operation monitoring and recording devices and on-board locomotive signal system devices. One device configured in the on-board equipment workshop of the signal section can complete the detection and maintenance work of both devices. Configuring two devices can be used as backups for each other. When one device fails, the other can still meet the working requirements, which has good economy.

[0037] (2) Compared with the existing test devices for train operation monitoring and recording devices and on-board locomotive signal system devices, the volume is greatly reduced. One person can complete the detection work of both devices on the same detection table, saving resources and personnel configuration.

[0038] (3) Compared with the purchase costs of the two test devices for train operation monitoring and recording devices and on-board locomotive signal system devices, the price of the train operation control equipment test device implemented by the present utility model is lower, and it is small in volume and convenient for installation. It is beneficial for the signal section to configure it at off-site detection points in the on-board equipment workshop, facilitating off-site detection points to promptly detect the devices taken off the train due to faults or spare devices and find the causes of faults, reducing potential safety hazards in train operation.

[0039] The present utility model is applied to the field of train operation control. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 Schematic structural diagram of the train operation control equipment test device described in Embodiment 1;

[0041] Figure 2 Schematic structural diagram of the train operation monitoring and recording device test unit described in Embodiment 2;

[0042] Figure 3 Schematic structural diagram of the speed pulse signal output circuit described in Embodiment 2;

[0043] Figure 4 Schematic structural diagram of the pressure sensor signal output circuit described in Embodiment 3;

[0044] Figure 5 Schematic diagram of the 110V / 48V digital quantity output circuit described in Embodiment 4;

[0045] Figure 6 Schematic diagram of the 110V digital quantity input circuit described in Embodiment 4;

[0046] Figure 7Schematic diagram of the locomotive signal on-board system equipment test unit described in Embodiment 6;

[0047] Figure 8 Schematic diagram of the track circuit signal generation and amplitude modulation circuit described in Embodiment 6;

[0048] Figure 9 Schematic diagram of the track circuit signal feedback sampling circuit described in Embodiment 7;

[0049] Figure 10 Schematic diagram of the parallel port voltage sampling module described in Embodiment 8;

[0050] Figure 11 Schematic diagram of the digital input circuit described in Embodiment 9;

[0051] Figure 12 Schematic diagram of the digital output circuit described in Embodiment 9. Specific embodiments

[0052] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention.

[0053] Embodiment 1. Refer to Figure 1 This embodiment will be described. The train operation control equipment test device described in this embodiment includes:

[0054] A computer, a communication unit, a power supply unit, a train operation monitoring and recording device test unit, and a locomotive signal on-board system equipment test unit;

[0055] One end of the communication unit is connected to the computer through a USB or Ethernet or serial communication interface, and the other end of the communication unit is connected to the train operation monitoring and recording device test unit, the train operation monitoring and recording device test unit, and the power supply unit through a CAN bus or serial communication interface; the train operation monitoring and recording device test unit is used to provide test conditions including speed pulse signals, track circuit signals, diesel engine speed signals, primary side voltage and current signals, pressure sensor signals, and digital signals for the train operation monitoring and recording device to be tested, and collect the analog signals, digital signals, and communication data output by the train operation monitoring and recording device to be tested and send them to the test system;

[0056] The locomotive signal on-board system equipment test unit is used to provide test conditions including track circuit signals and digital signals for the locomotive signal on-board system equipment to be tested, and collect the analog signals, digital signals, and communication data output by the locomotive signal on-board system equipment to be tested and send them to the test system.

[0057] The power supply unit is used to receive commands from the test system and output the power supply voltage for the device under test given by the test system. The power supply unit also performs analog sampling on the power supply voltage and current of the device under test, and sends the sampling results to the test system for display.

[0058] It should be noted that a computer is installed with test system software to control this device to implement the test on the device under test; the test system software is implemented by existing software.

[0059] In the prior art, two dedicated test devices need to be separately configured for the train operation monitoring and recording device and the on-vehicle equipment of the cab signal system. This not only causes waste of resources in equipment procurement, but also each test device needs to be separately returned to the factory for repair in case of failure, further affecting production and maintenance efficiency.

[0060] The test device proposed by the present utility model integrates two test functions into one device, reducing the need for two independent test devices. This integration can significantly reduce the costs of equipment procurement and maintenance, and at the same time avoid production interruptions caused by failures, improving the overall resource utilization efficiency.

[0061] In the prior art, since independent test personnel are required to operate each test device, it leads to duplicate configuration of personnel and waste of resources.

[0062] The present utility model reduces the need for dedicated test personnel by integrating the test unit of the train operation monitoring and recording device and the test unit of the on-vehicle equipment of the cab signal system in the same device. Since all test functions are concentrated on one device, personnel can receive multi-skills training, improving work efficiency and reducing the problem of duplicate personnel configuration.

[0063] The existing test devices are large in volume and high in price, resulting in increased costs for equipment configuration and maintenance. At the same time, these two large test devices are often not configured at off-site detection points, affecting timely detection and fault troubleshooting.

[0064] Through integrated design, the present utility model reduces the volume and cost of the overall device, making the device more compact and economical. This design enables the test device to be more easily deployed to off-site detection points, thus enhancing the flexibility and operability of the device. The integration of the test device also makes the configuration at different detection points more economical and feasible.

[0065] Traditional test devices usually need to occupy independent detection desks, and each test unit can only complete specific tasks, restricting the comprehensiveness and efficiency of the test.

[0066] The utility model integrates the test function into a single device, supports the setting of various test conditions, and can simultaneously process the test tasks of the train operation monitoring and recording device and the on-vehicle locomotive signal system device. This integrated test system can complete various detection tasks on the same platform, improving the test efficiency and data processing ability.

[0067] In the prior art, remote detection points lack necessary test equipment, resulting in the inability to timely detect and troubleshoot equipment failures, which affects the operation safety of trains.

[0068] The deployment of the integrated test device enables remote detection points to also conduct equipment detection and fault troubleshooting. Through a unified communication interface and test unit, the test device can more quickly detect the train operation monitoring and recording device and the on-vehicle locomotive signal system device, thereby improving the response speed and accuracy to faults and enhancing the safety of train operation.

[0069] Embodiment 2. Refer to Figure 2 and Figure 3 to illustrate this embodiment. This embodiment further limits the train operation control equipment test device described in Embodiment 1. The train operation monitoring and recording device test unit includes an analog quantity module, a digital quantity module, a communication module 1, a display measurement module, and at least one microcontroller;

[0070] The microcontroller is connected to the analog quantity module, the digital quantity module, the communication module 1, and the display measurement module, and is used to send signals to the analog quantity module, the digital quantity module, the communication module 1, and the display measurement module;

[0071] The analog quantity module includes a speed pulse signal output circuit, a track circuit signal output circuit, a diesel engine speed signal output circuit, a primary side voltage and current signal output circuit, and a pressure sensor signal output circuit;

[0072] The speed pulse signal output circuit is used to receive the signal sent by the microcontroller and output a square wave pulse or sine signal with adjustable frequency to the device under test, simulating the output signal of the locomotive speed sensor; the track circuit signal output circuit is used to receive the signal sent by the microcontroller and output an FSK signal with adjustable frequency or amplitude to the device under test, used to simulate the track circuit signal transmitted in the rail; the diesel engine speed signal output circuit is used to receive the signal sent by the microcontroller and output a sine wave signal with adjustable frequency to the device under test, used to simulate the output signal of the diesel engine speed sensor of the diesel locomotive; the primary side voltage and current signal output circuit is used to receive the control signal sent by the microcontroller and output a 50Hz sine wave signal with adjustable amplitude to the device under test, used to simulate the output signal of the primary side voltage and current sensor of the electric locomotive; the pressure sensor signal output circuit is used to receive the control signal sent by the microcontroller and output a DC voltage signal with adjustable amplitude to the device under test, used to simulate the output signal of the locomotive pressure sensor.

[0073] The digital quantity module is used to receive the control signal and output voltage switch quantities to the device under test;

[0074] The communication module 1 is connected to the communication interface of the device under test, sends data to the device under test to simulate communication, and receives the communication data of the device under test to monitor the output of the device under test;

[0075] The display measurement module is used to monitor the communication between the train operation monitoring and recording device display and the train operation monitoring and recording device host and collect the working voltage and current of the display.

[0076] The display measurement module includes a CAN communication circuit and a display power supply voltage and current sampling circuit. The CAN communication circuit consists of a CAN transceiver and a digital isolator or optocoupler, used to monitor whether the communication between the train operation monitoring and recording device display and the train operation monitoring and recording device host is normal; the display power supply voltage and current sampling circuit consists of a voltage dividing resistor, an operational amplifier and an isolation amplifier, used to collect the working voltage and current of the display.

[0077] The train operation monitoring and recording device test unit described in this embodiment provides comprehensive test capabilities by combining different functional modules (analog quantity module, digital quantity module, communication module, display measurement module). Each module is responsible for a specific type of signal output or monitoring, so as to achieve a comprehensive test of the train operation monitoring and recording device. The microcontroller serves as the core control unit in the test device, responsible for coordinating the work of each module. It sends control signals to the analog quantity module, digital quantity module, communication module 1, and display measurement module to ensure that each module operates according to the predetermined test requirements.

[0078] In the analog module, the speed pulse signal output circuit generates square wave pulses or sine signals to simulate the output signals of locomotive speed sensors, which can test the response ability of the device under test when processing speed pulse signals. The track circuit signal output circuit generates FSK signals with adjustable frequencies or amplitudes to simulate the signals in the track circuit, which helps to test the accuracy of the device when receiving track circuit signals. The diesel engine speed signal output circuit generates sine wave signals with adjustable frequencies to simulate the speed signals of diesel engines in diesel locomotives, which can test the response ability of the device to changes in diesel engine speeds. The primary side voltage and current signal output circuit generates 50Hz sine wave signals with adjustable amplitudes to simulate the output signals of primary side voltage and current sensors of electric locomotives, which helps to test the power signal processing ability of electric locomotives. The pressure sensor signal output circuit outputs DC voltages with adjustable amplitudes to simulate pressure sensor signals, which can test the reception accuracy of the device under test for pressure signals. The digital module generates voltage switch signals to test the processing ability of the device for digital switch signals. The communication module I simulates a communication interface and tests the communication function of the device under test by sending and receiving data, which can verify the performance of the device under test in actual communication. The display measurement module is used to monitor the communication status between the display and the host and collect the working voltage and current of the display, which helps to test the working performance of the display of the train operation monitoring and recording device.

[0079] In this embodiment, the speed pulse signal output circuit, the track circuit signal output circuit, the diesel engine speed signal output circuit, and the primary side voltage and current signal output circuit are all composed of a DAC, an isolation amplifier, and an operational amplifier, as Figure 3 shown. The digital quantity output by the microcontroller is a digital quantity that can adjust the output analog signal frequency and amplitude; the digital quantity is converted into a dual-channel current-type analog quantity by a current-type dual-channel complementary output DAC; R1 and R2 convert the current-type analog quantity into a voltage-type analog quantity; the dual-channel voltage-type analog quantity serves as the input of the differential isolation amplifier; the isolation amplifier is a 1:1 analog signal isolator used to isolate the signal output channel to protect the internal circuit; the differential signal output by the isolation amplifier is converted into a single-ended signal by the operational amplifier and output to the device under test.

[0080] In this embodiment, by simulating different types of signals (such as speed pulses, track circuit signals, diesel engine speed signals, primary side voltage and current signals, digital switch quantities, and communication data), the functions of the train operation monitoring and recording device can be comprehensively tested. This ensures that the device under test can work properly under various actual working conditions. The signal output circuit in the analog module can adjust the frequency and amplitude of the signal, providing flexible test conditions to meet different test requirements. The centralized control function of the microcontroller makes the coordination of the test process more efficient. It can control the operation of each module according to the test requirements, improving the automation and accuracy of the test. The display measurement module can monitor the working state of the display in real time, ensure the normal operation of the display during the test, and detect potential problems in a timely manner. By integrating different functional modules, the external dependence on test equipment is reduced, making the test process more efficient and simple.

[0081] Embodiment 3. Refer to Figure 4 Describe this embodiment. This embodiment further limits the train operation control equipment test device described in Embodiment 2. The pressure sensor signal output circuit includes an optocoupler and a PWM analog-to-digital converter; the pulse width adjustable signal PWM1 output by the microcontroller is output as a pulse width adjustable signal PWM2 after being isolated by the optocoupler, and the pulse width adjustable signal PWM2 is input to the PWM analog-to-digital converter to be converted into a DC voltage signal and output to the device under test.

[0082] In this embodiment, the pressure sensor signal output circuit includes an optocoupler and a PWM analog-to-digital converter (PAC). The purpose of this configuration is to accurately simulate the output signal of the pressure sensor and effectively measure the pressure signal processing ability of the device under test. The pulse width adjustable signal PWM1 output by the microcontroller first undergoes optocoupler isolation. The main function of this process is to achieve electrical isolation and protect the microcontroller from high voltages or noise. The working principle of the optocoupler is to achieve electrical isolation between the input and output through optical signals, thus ensuring the safety and stability of the system. After the pulse width adjustable signal PWM1 is isolated by the optocoupler, a pulse width adjustable signal PWM2 is output. This PWM2 signal is further input to the PWM analog-to-digital converter. The role of the PWM analog-to-digital converter is to convert the pulse width modulation signal into a corresponding DC voltage signal. The converted DC voltage signal is sent to the device under test.

[0083] In this embodiment, the use of optocoupler isolation can effectively protect the system from electrical interference and high voltages, improving the safety of measurement and the stability of the system. This design can prevent damage or malfunction caused by high voltages. The conversion process of the pulse width modulation signal can achieve high-precision signal measurement and control. During the process of converting the PWM signal into a DC voltage signal, high-precision measurement results can be obtained by precisely adjusting the pulse width, thereby improving the accuracy of the test device. By converting the pulse width modulation signal into a DC voltage signal through a PWM analog-to-digital converter, a stable and easy-to-process output signal can be obtained. This stable signal is very important for subsequent measurement and analysis and can reduce measurement errors. By integrating the optocoupler and the PWM analog-to-digital converter, the system design becomes more compact and efficient. In addition, this configuration can be compatible with existing test equipment and systems, facilitating application and maintenance.

[0084] Embodiment 4. Refer to Figure 5 and Figure 6 to describe this embodiment. This embodiment further limits the train operation control equipment test device described in Embodiment 2. The digital quantity module includes a 110V voltage switch quantity output circuit, a 110V input circuit, and a 48V voltage switch quantity output circuit;

[0085] The 110V voltage switch quantity output circuit is composed of optocouplers and is used to output a switch quantity with a high level of at least 138V to the device under test, simulating the locomotive control conditions;

[0086] The 110V input circuit is composed of voltage-dividing resistors and optocouplers and is used to collect the switch quantity output with a high level of at least 138V output by the device under test;

[0087] The 48V voltage switch quantity output circuit is composed of optocouplers and is used to output a switch quantity with a high level of at least 60V to the device under test, simulating the locomotive signal control conditions, including lamp colors, speed grades, and insulation joints.

[0088] In this embodiment, the 110V voltage digital output circuit is implemented through optocouplers. The main function of this part of the circuit is to simulate the locomotive control conditions, and to test the working performance of the device under test by providing a digital signal with a high level (at least 138V) to the device under test. The 110V input circuit consists of voltage-dividing resistors and optocouplers. This circuit is used to collect the output signals of the device under test, especially digital signals with a high level (at least 138V). The role of the optocoupler is to isolate and convert the high-voltage signal into a low-voltage signal for subsequent processing. The 48V voltage digital output circuit also consists of optocouplers. This circuit is used to provide digital signals with a lower level (at least 60V) to the device under test, simulating different signal control conditions. This can test the performance of the device under test under different voltage conditions. The optocoupler (optical isolator) is used for electrical isolation, isolating the high-voltage part from the low-voltage control system, thus protecting the low-voltage circuit and control system from the influence of high voltage. The optocoupler can also convert the voltage of the digital signal into a level suitable for processing, which is very important for the acquisition and control of high-voltage signals.

[0089] In this embodiment, the design of the 110V voltage digital output circuit and the 110V input circuit can simulate the high-voltage conditions of locomotive control and detect the performance of the device under test under these conditions. The simulation of high-voltage signals can more realistically test the high-voltage working ability of the device. Using optocouplers for electrical isolation can effectively avoid interference or damage to the low-voltage control system caused by the high-voltage part. This design improves the safety and reliability of the system. The addition of the 48V voltage digital output circuit enables the test device to simulate multiple voltage and signal control conditions. This can test the performance of the device under different conditions and ensure the adaptability and stability of the device. The combination of voltage-dividing resistors and optocouplers can accurately collect digital signals with high voltage and convert them into signals suitable for processing by the low-voltage system, ensuring the accuracy and reliability of data acquisition.

[0090] Embodiment 5: This embodiment further defines the train operation control device test device described in Embodiment 2. The communication module includes a CAN communication circuit, an RS485 communication circuit, and an RS232 communication circuit; the CAN communication circuit consists of a CAN transceiver and a digital isolator or an optocoupler, and the RS485 communication circuit consists of an RS485 transceiver and a digital isolator or an optocoupler, which is used to connect to the communication interface of the device under test, send data to the device under test to simulate communication, and receive the communication data of the device under test to monitor the output of the device under test; the RS232 communication circuit consists of an RS232 transceiver and is used to calibrate the time of the device under test.

[0091] In the CAN communication circuit, CAN (Controller Area Network) is a communication protocol used for in-vehicle networks and is widely applied in fields such as automobiles and trains. The CAN communication circuit consists of a CAN transceiver and a digital isolator or optocoupler, capable of efficiently and stably transmitting data and having strong anti-interference capabilities. In the RS485 communication circuit, RS485 is a differential signal communication standard suitable for long-distance and multi-point communication. The RS485 communication circuit consists of an RS485 transceiver and a digital isolator or optocoupler, applicable to the remote communication and data exchange of train operation control equipment. In the RS232 communication circuit, RS232 is a standard serial communication protocol mainly used for short-distance point-to-point communication. The RS232 communication circuit consists of an RS232 transceiver and is mainly used for timing calibration of the device under test or simple data exchange. It should be noted that the CAN transceiver, RS485 transceiver, and RS232 transceiver described in this embodiment are all existing devices.

[0092] Send data to the device under test through the CAN and RS485 communication circuits to simulate the communication environment in actual work. This can help the test device verify the response and stability of the device under test under different communication protocols. Receive the communication data of the device under test for monitoring the accuracy and stability of the device output. This step is crucial for ensuring that the device under test can properly process and respond to data.

[0093] In this embodiment, a circuit module integrating three communication protocols, CAN, RS485, and RS232, can comprehensively cover the communication interfaces that may be used in train operation control equipment. This enables the test device to comprehensively test devices under multiple communication standards, enhancing the flexibility and applicability of the test. Using a digital isolator or optocoupler in the CAN and RS485 communication circuits can effectively isolate the interference between different electrical systems, enhancing the stability and reliability of the system. By simulating the real communication environment and monitoring the device output, the performance of the device under test under actual working conditions can be ensured, potential problems can be discovered in advance, and the risks in actual operation can be reduced. Using the RS232 protocol for device timing calibration is simple and intuitive, can ensure the accuracy of the device clock, and improves the overall performance and coordination of the device. This design can adapt to the test requirements of devices from different manufacturers and models, provides a general test platform, helps reduce device compatibility problems, and improves test efficiency.

[0094] Embodiment Six. Refer to Figure 7 and Figure 8Describe this embodiment. This embodiment further defines the train operation control equipment test device described in Embodiment 1. The locomotive signal on-vehicle system equipment test unit includes a track circuit signal generation and feedback module, a parallel port voltage sampling module, a digital input and output module, a communication module II, and at least one microcontroller;

[0095] The microcontroller is connected to the track circuit signal generation and feedback module, the parallel port voltage sampling module, the digital input and output module, and the communication module II;

[0096] The track circuit signal generation and feedback module includes a track circuit signal generation and range adjustment circuit and a track circuit signal feedback sampling circuit;

[0097] The track circuit signal generation and range adjustment circuit is used to receive the signal sent by the microcontroller and generate a track circuit standard signal with adjustable frequency and amplitude;

[0098] The track circuit signal feedback sampling circuit is used to collect the track circuit signal fed back by the device under test;

[0099] The parallel port voltage sampling module is used to collect the output signal voltage of the device under test;

[0100] The digital input and output module is used to collect the digital signal output by the device under test and output test conditions to the device under test;

[0101] The communication module II is used to monitor the CAN communication data and RS485 or RS422 communication data of the device under test, and also send simulated TAX box information to the device under test.

[0102] The communication module II includes a CAN communication circuit and an RS485 or RS422 communication circuit. The CAN communication circuit and the RS485 or RS422 communication circuit are composed of a CAN transceiver, an RS485 or RS422 transceiver, and an isolation amplifier or optocoupler, and are used to monitor the CAN communication data and RS485 or RS422 communication data of the device under test, and also send simulated TAX box information to the device under test.

[0103] In this embodiment, the track circuit signal generation and range adjustment circuit is composed of a DAC, an isolation amplifier, and a multiplexer, and is used to generate a track circuit standard signal with adjustable frequency and amplitude under the control of the test system software, including domestic frequency shift signals, UM71 signals, ZPW-2000 signals, and AC counting signals, such as Figure 8As shown. The digital quantity output by the microcontroller is the digital quantity for adjusting the frequency and amplitude of the output analog signal; the digital quantity is converted into a dual-channel current-type analog quantity by a current-type dual-channel complementary output DAC; R1 and R2 convert the current-type analog quantity into a voltage-type analog quantity; the dual-channel voltage-type analog quantity serves as the input of the differential isolation amplifier; the isolation amplifier is a 1:1 analog signal isolator for isolating the signal output channel to protect the internal circuit; the differential signal output by the isolation amplifier serves as the input of the device under test; the microcontroller controls the multiplexer to select resistor R3 or R4 or R5 as the range adjustment resistor of the DAC for adjusting the full-scale value of the output signal.

[0104] In this embodiment, the equipment test unit of the on-vehicle train signal system adopts a multi-module design, enabling the test device to comprehensively cover different functions of the device under test, including the generation and feedback of track circuit signals, digital signals, analog voltage signals, and various communication data. This diverse test capability can ensure detailed and accurate testing of all aspects of the device. The adjustable track circuit signal (adjustable in frequency and amplitude) enables the test device to simulate different working conditions, meet various test requirements, and help verify the performance of the device under different conditions. The real-time acquisition and feedback functions (such as the track circuit signal feedback sampling circuit, digital input module, etc.) can immediately obtain the actual operating status of the device, facilitating quick diagnosis and adjustment of the test process. The monitoring of CAN and RS485 or RS422 communication data, as well as the transmission of simulated TAX box information, can ensure the normal operation of the device under different communication protocols, enhancing the comprehensiveness and accuracy of the test. The integration of the microcontroller ensures the coordinated operation of all modules, improving the automation level of the test process and the simplicity of operation.

[0105] The above signal acquisition process is all implemented by existing technologies.

[0106] Embodiment 7. Refer to Figure 9 Describe this embodiment. This embodiment further limits the train operation control equipment test device described in Embodiment 6. The track circuit signal feedback sampling circuit consists of an isolation amplifier and an analog-to-digital converter ADC. The track circuit signal feedback by the device under test is isolated and input into the differential input analog-to-digital converter ADC for analog-to-digital conversion through a 1:1 isolation amplifier, and the converted data is output to the microcontroller through serial communication.

[0107] In this embodiment, the track circuit signal feedback sampling circuit achieves precise sampling of the track circuit signal by adopting a combination of an isolation amplifier and an analog-to-digital converter (ADC). Specifically, the track circuit signal first undergoes isolation processing through a 1:1 isolation amplifier to ensure that the normal operation of the device is not disturbed during signal transmission. After that, the isolated signal is input into the differential-input ADC for analog-to-digital conversion to convert the analog signal into a digital signal. Finally, the converted data is transmitted to the microcontroller through a serial communication interface for further processing and analysis.

[0108] In this embodiment, the isolation amplifier effectively avoids the influence brought by signal interference and ground potential difference, improving the stability of the signal. Using a high-precision ADC can accurately sample the track circuit signal to ensure the accuracy of the data. The serial communication interface simplifies the data transmission process, reducing the complexity and cost of data transmission.

[0109] Embodiment 8. Refer to Figure 10 Describe this embodiment. This embodiment further limits the train operation control equipment test device described in Embodiment 6. The parallel port voltage sampling module consists of a voltage-dividing resistor, an operational amplifier, an analog-to-digital converter ADC, and a digital isolator; the voltage-dividing resistors R1 and R2 divide the input signal voltage into the acquisition voltage range of the analog-to-digital converter ADC; the operational amplifier is used for impedance matching; the analog-to-digital converter ADC performs analog-to-digital conversion, and the output serial communication data is output to the microcontroller after being isolated by the digital isolator.

[0110] Specifically, the voltage-dividing resistors (R1 and R2) divide the input signal voltage into a range acceptable to the ADC to ensure that the voltage is within a safe acquisition range. The operational amplifier is used for impedance matching to enhance signal stability and improve sampling accuracy. The analog-to-digital converter (ADC) converts the analog voltage signal into a digital signal for subsequent processing. The digital isolator provides electrical isolation during data transmission, preventing noise interference and improving system security.

[0111] In this embodiment, voltage division and impedance matching improve the accuracy of signal acquisition. The digital isolator ensures the electrical isolation of the system, protecting the microcontroller from high-voltage interference. The modular design and isolation measures improve the stability and reliability of the overall system.

[0112] Embodiment 9. Refer to Figure 11 and Figure 12Describe this embodiment. This embodiment further defines the train operation control equipment test device described in Embodiment 6. The digital input and output module includes a digital input circuit and a digital output circuit. The digital input circuit consists of a voltage-dividing resistor and an optocoupler, and is used to collect the digital signals output by the device under test. The digital output circuit consists of a driver and a relay, and is used to output test conditions including end positions, carrier frequency selection switches, and working hosts to the device under test under the control of the test system.

[0113] Specifically, the digital input circuit consists of a voltage-dividing resistor and an optocoupler. The voltage-dividing resistor adjusts the digital signal to an input range suitable for the optocoupler, and the optocoupler isolates the signal to avoid signal interference and protect the subsequent circuit. The digital output circuit consists of a driver and a relay. The driver is used to control the on-off state of the relay, and the relay outputs digital signals to the device under test according to the instructions of the test system.

[0114] In this embodiment, the optocoupler provides effective electrical isolation, improving the stability and safety of the system. The relay can withstand high current and high voltage and adapt to various test conditions. The driver can accurately control the on-off state of the relay to achieve accurate test signal output.

[0115] Embodiment 10. This embodiment further defines the train operation control equipment test device described in Embodiment 1. The device further includes an adjustable power supply, and the adjustable power supply includes an AC 220V to DC adjustable switching power supply, which is used to provide working power for the device under test. The switching power supply can output a DC voltage with a range of not less than 77V to 138V under the control of the power supply unit.

[0116] Although the preferred embodiments of the present disclosure have been described, those skilled in the art can make additional changes and modifications once they learn the basic creative concepts. Therefore, the appended claims are intended to be construed to include the preferred embodiments as well as all changes and modifications falling within the scope of the present disclosure.

[0117] Obviously, those skilled in the art can make various changes and modifications to the present disclosure without departing from the spirit and scope of the present disclosure. Thus, if these modifications and variations of the present disclosure fall within the scope of the claims of the present disclosure and their equivalent technologies, the present disclosure also intends to include these changes and modifications.

Claims

1. A train operation control equipment testing device, characterized in that: The device comprises: Computer, communication unit, power supply unit, train operation monitoring and recording device test unit and locomotive signal onboard system equipment test unit; One end of the communication unit is connected to the computer via USB or Ethernet or a serial communication interface, and the other end of the communication unit is connected to the train operation monitoring and recording device test unit, the locomotive signal on-board system equipment test unit, and the power supply unit via a CAN bus or a serial communication interface; the train operation monitoring and recording device test unit is used to provide test conditions for the train operation monitoring and recording device under test, and collect analog quantities, switch quantities, and communication data output by the train operation monitoring and recording device under test and send them to the test system; The locomotive signal on-board system equipment testing unit is used to provide test conditions for the locomotive signal on-board system equipment under test, and collect analog quantities, switch quantities and communication data output by the locomotive signal on-board system equipment under test and send them to the test system.

2. The train operation control equipment testing device according to claim 1, characterized in that: The train operation monitoring and recording device test unit includes an analog quantity module, a digital quantity module, a communication module 1, a display measurement module and at least one microcontroller; The microcontroller is connected to the analog quantity module, the digital quantity module, the communication module 1, and the display measurement module, and is used to send signals to the analog quantity module, the digital quantity module, the communication module 1, and the display measurement module; The analog quantity module includes a speed pulse signal output circuit, a track circuit signal output circuit, a diesel engine speed signal output circuit, a primary voltage and current signal output circuit, and a pressure sensor signal output circuit; The speed pulse signal output circuit is used to receive the signal sent by the microcontroller, and output a square wave pulse or a sine signal to the device under test, simulating the output signal of the locomotive speed sensor; the track circuit signal output circuit is used to receive the signal sent by the microcontroller, and output a frequency-adjustable or amplitude-adjustable FSK signal to the device under test, which is used to simulate the track circuit signal transmitted in the rail; the diesel engine speed signal output circuit is used to receive the signal sent by the microcontroller, and output a frequency-adjustable sine wave signal to the device under test, which is used to simulate the output signal of the speed sensor of the diesel engine of the internal combustion locomotive; the primary voltage and current signal output circuit is used to receive the signal sent by the microcontroller, and output a 50Hz sine wave signal with adjustable output amplitude to the device under test, which is used to simulate the output signal of the primary voltage and current sensor of the electric locomotive; the pressure sensor signal output circuit is used to receive the signal sent by the microcontroller, and output an amplitude-adjustable DC voltage signal to the device under test, which is used to simulate the output signal of the locomotive pressure sensor; The digital quantity module is used to receive a control signal and output a voltage switch quantity to the device under test; The communication module 1 is connected to the communication interface of the device under test, sends data to the device under test to simulate communication, and receives communication data from the device under test to monitor the output of the device under test; The display measurement module is used to monitor the communication between the display of the train operation monitoring and recording device and the host of the train operation monitoring and recording device and to collect the working voltage and current of the display.

3. The train operation control equipment testing device according to claim 2, characterized in that: The pressure sensor signal output circuit includes an optocoupler and a PWM analog converter; the pulse width adjustable signal PWM1 output by the microcontroller is output as a pulse width adjustable signal PWM2 after being isolated by the optocoupler, and the pulse width adjustable signal PWM2 is input to the PWM analog converter and converted into a DC voltage signal and output to the device under test.

4. The train operation control equipment testing device according to claim 2, characterized in that: The digital quantity module includes a 110V voltage switch quantity output circuit, a 110V input circuit and a 48V voltage switch quantity output circuit; The 110V voltage switch quantity output circuit is composed of an optical coupler, which is used to output a high-level switch quantity of at least 138V to the device under test to simulate the locomotive control condition; The 110V input circuit is composed of a voltage-dividing resistor and an optical coupler, and is used to collect the high-level switching output of the device under test of at least 138V; The 48V voltage switch quantity output circuit is composed of an optical coupler, and is used to output a high level switch quantity of at least 60V to the device under test, simulating the locomotive signal control condition.

5. The train operation control equipment testing device according to claim 2, characterized in that: The communication module includes a CAN communication circuit, an RS485 communication circuit, and an RS232 communication circuit; the CAN communication circuit is composed of a CAN transceiver and a digital isolator or an optical coupler, and the RS485 communication circuit is composed of an RS485 transceiver and a digital isolator or an optical coupler, and is used to connect to the communication interface of the device under test, send data to the device under test to simulate communication, and receive communication data of the device under test to monitor the output of the device under test; the RS232 communication circuit is composed of an RS232 transceiver, and is used to calibrate the time of the device under test.

6. The train operation control equipment testing device according to claim 1, characterized in that: The locomotive signal onboard system equipment test unit includes a track circuit signal generation and feedback module, a parallel port voltage sampling module, a switch input and output module, a communication module 2 and at least one microcontroller; The microcontroller is connected to the track circuit signal generation and feedback module, the parallel port voltage sampling module, the switch input and output module, and the communication module; The track circuit signal generation and feedback module includes a track circuit signal generation and range adjustment circuit and a track circuit signal feedback sampling circuit; The track circuit signal generation and range adjustment circuit is used to receive the signal sent by the microcontroller and generate a track circuit standard signal with adjustable frequency and amplitude; The track circuit signal feedback sampling circuit is used to collect the track circuit signal fed back by the device under test; The parallel port voltage sampling module is used to collect the output signal voltage of the device under test; The switch quantity input and output module is used to collect the switch quantity signal output by the device under test and output the test conditions to the device under test; The communication module 2 is used to monitor the CAN communication data and RS485 or RS422 communication data of the device under test, and also sends simulated TAX box information to the device under test.

7. The train operation control equipment testing device according to claim 6, characterized in that: The track circuit signal feedback sampling circuit is composed of an isolation amplifier and an analog-to-digital converter ADC. The track circuit signal fed back by the device under test is isolated through a 1:1 isolation amplifier and input to the differential input analog-to-digital converter ADC for analog-to-digital conversion. The converted data is output to the microcontroller through serial communication.

8. The train operation control equipment testing device according to claim 6, characterized in that: The parallel port voltage sampling module is composed of a voltage dividing resistor, an operational amplifier, an analog-to-digital converter ADC and a digital isolator; the voltage dividing resistor R1 and the voltage dividing resistor R2 divide the input signal into the acquisition voltage range of the analog-to-digital converter ADC; the operational amplifier is used for impedance matching; the analog-to-digital converter ADC performs analog-to-digital conversion, and the output serial communication data is isolated by the digital isolator and then output to the microcontroller.

9. The train operation control equipment testing device according to claim 6, characterized in that: The switch quantity input and output module includes a switch quantity input circuit and a switch quantity output circuit; the switch quantity input circuit is composed of a voltage divider resistor and an optical coupler, and is used to collect the switch quantity signal output by the device under test; the switch quantity output circuit is composed of a driver and a relay, and is used to output test conditions to the device under test under the control of the test system.

10. The train operation control equipment testing device according to claim 1, characterized in that: The device also includes an adjustable power supply, which includes an AC 220V to DC adjustable switching power supply for providing working power to the device under test.

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