GYK device data testing device

Abstract

The utility model discloses a kind of GYK equipment data testing device, solve the problem that in prior art, GYK equipment data testing process, cannot be realized comprehensive test, test efficiency is low and test cost is high, including analog signal unit and the mother board unit being connected with analog signal unit, the mother board unit is connected with DMI unit and GYK unit, the power module is connected to the mother board unit, the interface unit is connected to the DMI unit, the analog signal unit is connected with interface unit, the interface unit is communicated with external GMS vehicle-mounted equipment, the analog signal unit includes digital quantity input signal processing circuit and pipe pressure analog circuit. It can be reviewed, verified, tested etc. to GYK equipment data, realize comprehensive test, simulate in advance to operating line condition, improve test efficiency, reduce test cost.

Description

Technical Field

[0001] This utility model relates to the field of rail vehicle safety technology, and in particular to a GYK equipment data testing device. Background Technology

[0002] Railcars are the main transportation tool in railway construction, and railcar operation control equipment (GYK equipment) is a crucial component for the safe operation of railcars. It is the most important equipment ensuring the safe operation of railcars on the track. By monitoring the train's position, speed, and other key parameters in real time, it ensures that the train operates according to predetermined safety rules. It is used to control the operation of railcars and guarantee operational safety, and is widely used in the railway system. In recent years, GYK equipment has been widely installed and used in railway electrical systems, providing excellent assurance for the safe operation of railcars.

[0003] GYK equipment mainly consists of components such as a host unit, a DMI (Human-Machine Interface) unit, onboard basic data, and revealing data. To ensure the reliability and security of GYK equipment, its data must undergo comprehensive testing and verification. However, with technological advancements, current GYK equipment has increasingly more functions and interfaces, making traditional GYK equipment testing devices unable to effectively support comprehensive software and data testing, resulting in low testing efficiency and high testing costs.

[0004] For example, the Chinese Patent Office published patent CN219777831U on September 9, 2023: A simulation system for simulating GYK operation, including a GYK host, a first DC regulated power supply, a braking isolation device box, control components, a first DMI, a second DMI, a first locomotive signal, a second locomotive signal, a first speaker, a second speaker, a first group of prompt buttons, a second group of prompt buttons, a sensor component, an output component, and a working condition simulation component. This system simulates the operating conditions of the GYK during railcar operation, allowing for testing of the functions of various components during GYK operation. However, it only tests the working conditions and speed of the GYK equipment, and does not achieve comprehensive testing. Summary of the Invention

[0005] The purpose of this invention is to solve the problems of low testing efficiency and high testing cost in the existing GYK device data testing process, which cannot achieve comprehensive testing. It provides a GYK device data testing device that can perform data verification, validation, and testing on GYK devices, simulate the operating line conditions in advance, improve testing efficiency, and reduce testing costs.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A GYK device data testing device includes an analog signal unit and a motherboard unit connected to the analog signal unit. The motherboard unit is connected to a DMI unit and a GYK unit, and a power module is connected to the motherboard unit. The DMI unit is connected to an interface unit. The analog signal unit is connected to the interface unit, and the interface unit communicates with an external GMS vehicle-mounted device. The analog signal unit includes a digital input signal processing circuit and a tube voltage analog circuit.

[0008] This application provides a GYK equipment data testing device that can generate speed, pipe pressure, and operating condition signals through an analog signal unit. It allows for checking for errors in the data displayed during operation, verifying the correctness of basic data display and control, and simulating the operating circuit conditions in advance, thereby improving testing efficiency and reducing testing costs. It enables comprehensive software and data review, verification, and testing of GYK equipment in a laboratory setting, simulating problems found in the field. It can also serve as a GYK training device for training relevant personnel on GYK equipment functions and operations.

[0009] It should be noted that the simulation of the operating circuit conditions in this utility model is carried out by simulating tube voltage, speed, etc. through hardware circuits, and is not simulated through computer software, and does not involve any improvement of computer programs.

[0010] Preferably, the analog signal unit includes a first MCU and a vehicle signal board connected to the first MCU. The first MCU is connected to the main board unit via a CAN circuit. The first MCU is connected to a core board. The core board is connected to the main board unit and the interface unit. The vehicle signal board includes a second MCU and a tube voltage analog circuit, a speed analog circuit, a working condition analog circuit, and a digital input signal processing circuit connected to the second MCU.

[0011] Preferably, the DMI unit includes a DMI core board, which is connected to an LVDS transceiver circuit. The LVDS transceiver circuit is connected to an LVDS splitter circuit. One output of the LVDS splitter circuit is connected to the DMI display module, and the other output of the LVDS conversion circuit is connected to an LVDS to HDMI circuit. The LVDS to HDMI circuit is connected to an external display through an interface unit.

[0012] Preferably, the tube voltage analog circuit includes a dual-channel digital-to-analog converter, and both voltage signal output terminals of the dual-channel digital-to-analog converter are connected to an amplitude adjustment module, and the amplitude adjustment module is connected to a signal conditioning module.

[0013] Preferably, the speed simulation circuit includes a first opto-isolation chip, in which the positive terminal of the light-emitting diode is connected to a 3.3V power supply, the negative terminal of the light-emitting diode is connected to a second MCU, the VCC terminal of the first opto-isolation chip is connected to its Vo terminal, and the Vo terminal of the first opto-isolation chip is connected to an interface unit.

[0014] Preferably, the operating condition simulation circuit includes a second opto-isolation chip, in which the negative terminal of the light-emitting diode is connected to the second MCU, the positive terminal of the light-emitting diode is connected to a 3.3V power supply, the VCC terminal of the second opto-isolation chip is connected to a 24V power supply, and the Vo terminal of the second opto-isolation chip is connected to the interface unit.

[0015] Preferably, the digital input signal processing circuit includes an optocoupler, wherein the positive terminal of the light-emitting diode in the optocoupler is connected to the second MCU and connected to the negative terminal of the light-emitting diode through a first resistor, and the negative terminal of the light-emitting diode is grounded; the collector of the phototransistor in the optocoupler is connected to the 3.3V power supply and the interface unit, and the emitter of the phototransistor in the optocoupler is grounded.

[0016] Preferably, the GYK unit includes a first main control board and a second main control board, both of which are connected to the motherboard unit. The GYK unit also includes a communication recording board and a braking interface board connected to the motherboard unit.

[0017] Preferably, the system also includes a key display unit connected to the analog signal unit, the key display unit comprising a display screen, keys, and an encoder.

[0018] Preferably, the analog signal unit has four sets of tube voltage analog circuits, eight sets of speed analog circuits, four sets of operating condition analog circuits, and four sets of digital input signal processing circuits.

[0019] Therefore, this utility model has the following beneficial effects:

[0020] 1. It can generate tube voltage signals, speed signals, operating condition signals, and detect shutdown, emergency, normal, and pressure holding signals through tube voltage simulation circuit, speed simulation circuit, operating condition simulation circuit, and digital input signal processing circuit. It adopts pure circuit to realize comprehensive testing of GYK equipment, improves testing efficiency, and reduces testing costs.

[0021] 2. It can check for errors in the data displayed during operation, verify the correctness of basic data display and control, and simulate the operation of the circuit in advance, improving testing efficiency and reducing testing costs. It enables comprehensive software and data review, verification, and testing of GYK equipment in the laboratory, simulating problems found on-site. It can also serve as a GYK training device for training relevant personnel on GYK equipment functions and operation. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the architecture of the GYK equipment data testing device in this utility model.

[0023] Figure 2 This is a circuit diagram of the tube voltage analog circuit in this utility model.

[0024] Figure 3 This is a circuit diagram of the speed simulation circuit in this utility model.

[0025] Figure 4 This is a circuit diagram of the working condition simulation circuit in this utility model.

[0026] Figure 5 This is a circuit diagram of the digital input signal processing circuit in this utility model.

[0027] Figure 6 This is a circuit diagram of the DMI unit in this utility model.

[0028] In the diagram: 1. Analog signal unit; 2. DMI unit; 3. GYK unit; 4. Power module; 5. Motherboard unit; 6. Interface unit; 7. First MCU; 8. Second MCU; 9. Speed ​​simulation circuit; 10. Tube voltage simulation circuit; 11. Operating condition simulation circuit; 12. DMI core board; 13. LVDS 1-to-2 splitter circuit; 14. LVDS to HDMI circuit; 15. DMI LCD screen; 16. Core board; 17. LCD screen; 18. Buttons; 19. First CAN circuit; 20. First ETH transceiver; 21. Second ETH transceiver; 22. Second CAN circuit; 23. 422 circuit; 24. USB circuit; 25. Backlight control module; 26. First main control board; 27. Second main control board; 28. Communication recording board; 29. ​​Braking interface board. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments: Example

[0030] This embodiment is a GYK device data testing device, the overall structure of which is as follows: Figure 1As shown, it includes an analog signal unit 1, a DMI unit 2, a GYK unit 3, a power supply module 4, a motherboard unit 5, and an interface unit 6. The analog signal unit is connected to the motherboard unit and the interface unit, the power supply module is connected to the motherboard unit, the motherboard unit is connected to the GYK unit and the DMI unit, and the DMI unit is connected to the interface unit.

[0031] This embodiment provides a GYK equipment data testing device that can generate speed, pipe pressure, and operating condition signals through an analog signal unit. It allows for checking for errors in the data displayed during operation, verifying the correctness of basic data display and control, and simulating the operating circuit conditions in advance, thereby improving testing efficiency and reducing testing costs. It enables comprehensive software and data review, verification, and testing of GYK equipment in a laboratory setting, simulating problems found in the field. It can also serve as a GYK training device for training relevant personnel on GYK equipment functions and operations.

[0032] Specifically:

[0033] The analog circuit includes a vehicle signal board and a main control board. The main control board includes a core board 16, a first MCU 7, and other functional modules, primarily used to simulate various signal controls. After receiving button operations, the first MCU performs corresponding business logic processing, sends analog signal commands to the vehicle signal board via serial port, and receives feedback on the vehicle braking status from the vehicle signal board. It also has analog communication capabilities, simulating voice recording and locomotive signal communication protocols, and forwarding data between the GYK-160 main control board and the analog signal units.

[0034] The vehicle signal board includes a second MCU 8, signal simulation circuitry, and other functional modules. The second MCU is connected to the first MCU, and the signal simulation circuitry is connected to both the motherboard unit and the second MCU. The vehicle signal board communicates with the main control board via a serial port, receives control commands, and simulates voltage, speed, and operating condition signals according to the service requirements. The signal simulation circuitry includes a speed simulation circuit 9, a voltage simulation circuit 10, an operating condition simulation circuit 11, and a digital signal processing circuit.

[0035] The analog signal unit can simulate signals such as tube pressure, speed, and operating conditions, and detect signals such as engine shutdown, emergency, normal operation, and pressure holding. It includes tube pressure analog circuit, speed analog circuit, operating condition analog circuit, and digital input signal processing circuit.

[0036] In this embodiment, the GYK unit is a GYK-160 unit. The GYK unit includes a DMI core board 12, an LVDS splitter circuit 13, an LVDS to HDMI circuit 14, and a DMI LCD screen 15. The DMI core board is connected to the motherboard unit, the DMI core board is connected to the LVDS splitter circuit, the LVDS splitter circuit is connected to the LVDS to HDMI circuit and the DMI LCD screen respectively, and the LVDS to HDMI circuit is connected to the interface unit.

[0037] The DMI unit uses the same hardware as the original DMI hardware unit, maintaining the same hardware configuration, but adds a video output interface. This is achieved using an LVDS-to-2 splitter and an LVDS-to-HDMI converter, allowing for simultaneous display of the DMI interface via an external projector to show vehicle information and status. The LVDS transceiver circuit converts the parallel data sent by the DMI core board into a high-speed serial LVDS signal, then outputs two LVDS signals via the LVDS-to-2 splitter. One signal is used for display on the DMI LCD screen, and the other is output to the interface unit via the LVDS-to-HDMI converter for connecting to an external display.

[0038] The motherboard unit serves as the main communication and interaction unit between the GYK board and the analog signal unit. It connects the GYK unit, the braking interface unit, the analog signal unit, the DMI unit, and the interface unit. It also converts the CAN, LAN, and 422 communication signals between the units and distributes the 24V output from the switching power supply to each unit.

[0039] The interface unit primarily connects the CAN, 422, and LAN signals from the GYK unit, the USB and LAN signals from the analog signal unit, and the HDMI signal from the DMI unit to external devices. It supports communication with external GMS vehicle-mounted equipment, BTM equipment, or analog software, as well as connecting external devices such as leveling and axle temperature control units. The USB interface is used for importing transponder message files and GYK operation log files. It also features a debugging and upgrade interface.

[0040] The power module uses a 220V to 24V switching power supply to output 24V to the motherboard unit to power the entire device.

[0041] The GYK unit includes a first main control board 26, a second main control board 27, a communication recording board 28, and a braking interface board 29. The GYK unit uses the same single-system main control board, communication recording board, and braking interface board as the vehicle-mounted GYK equipment, used to simulate ground equipment conditions for verifying basic GYK data or the GYK main control program and for normal state communication. The braking interface board uses the same interface definition as the vehicle-mounted GYK equipment board. By setting the normal brake line deceleration, normal speed deceleration, emergency brake line deceleration, and emergency speed deceleration via the buttons on the analog signal unit, the corresponding braking status can be displayed on the analog signal unit's screen when the GYK output braking is operated.

[0042] This embodiment provides a GYK equipment data testing device that can perform software and data verification, validation, and testing of GYK equipment in the laboratory, simulate problems found on site, and allow drivers to simulate the operation route in advance using the GYK software data tester. It can also be used as a GYK training device to train relevant personnel on the functions and operation of GYK equipment.

[0043] Example 2:

[0044] This embodiment, based on Embodiment 1, adds a button display unit and clarifies the connection relationships between the modules, providing a GYK device data testing device. Its overall structure is as follows: Figure 1 As shown, it includes an analog signal unit 1, a DMI unit 2, a GYK unit 3, a power supply module 4, a motherboard unit 5, an interface unit 6, and a key display unit. The analog signal unit is connected to the motherboard unit, the interface unit, and the key display unit, respectively. The power supply module is connected to the motherboard unit. The motherboard unit is connected to the GYK unit and the DMI unit, respectively. The DMI unit is connected to the interface unit.

[0045] This embodiment addresses the lack of specialized testing instruments for GYK-160 equipment on the market, which hinders comprehensive software and data testing and results in low efficiency for manual testing. It provides a GYK equipment data testing device for verifying various control modes of GYK-160 track vehicle operation control equipment, validating modified ground-based data, and verifying temporary information disclosure. This provides an automated, multi-purpose simulation testing device for GYK-160 equipment, improving testing efficiency and reducing costs by simulating various operating scenarios in a laboratory environment. It can generate speed, pipe pressure, and operating condition signals through a simulated signal unit, allowing for the examination of data display errors during operation, verification of the correctness of basic data display and control, and pre-simulation of operating line conditions, thus improving testing efficiency and reducing costs. It enables comprehensive software and data review, verification, and testing of GYK equipment in the laboratory, simulating problems found on-site. It can also serve as a GYK training device for training relevant personnel on GYK equipment functions and operations.

[0046] Specifically:

[0047] The button display unit includes an LCD screen 17, buttons 18, and an encoder. The main control board of the analog signal unit outputs display signals to the LCD screen for analog signal data display. The buttons and encoder are used for human-machine interaction control, enabling input and adjustment commands. The button signals and encoder signals are connected to the I / O ports of the first MCU in the analog signal unit's main control board. When a button is pressed and released or the encoder rotates, the first MCU of the main control board scans and detects the button value, then sends it to the core board for functional logic operation. Parameters such as speed, tube voltage, operating condition, and rotational speed can be set via the buttons, and the set parameters can be displayed on the DMI unit.

[0048] The analog circuit includes a vehicle signal board and a main control board. The main control board is mainly used to simulate various signal controls, including a core board 16, a first MCU 7, a first CAN circuit 19, a first ETH transceiver 20, a second ETH transceiver 21, a second CAN circuit 22, a 422 circuit 23, a USB circuit 24, and a backlight control module 25. The first MCU is connected to the second MCU, the first MCU is connected to the button 18, the first MCU is connected to the motherboard unit through the first CAN circuit, the first MCU is connected to the core board through the first ETH transceiver, the core board is connected to the interface unit through the second ETH transceiver, the core board is connected to the backlight control module, the backlight control module is connected to the LCD screen 17, the core board is connected to the LCD screen, the core board is connected to the motherboard unit through the 422 circuit, the core board is connected to the motherboard through the second CAN circuit, and the core board is connected to the interface unit through the USB circuit.

[0049] After receiving a button press, the first MCU performs corresponding business logic processing, sends analog signal commands to the vehicle signal board via serial port, and receives feedback on the vehicle braking status from the vehicle signal board. It also has analog communication capabilities, capable of simulating voice recording and locomotive signal communication protocols, and forwarding data between the GYK main control board and the analog signal unit.

[0050] The vehicle signal board includes a second MCU 8, signal simulation circuitry, and other functional modules. The second MCU is connected to the first MCU, and the signal simulation circuitry is connected to both the motherboard unit and the second MCU. The vehicle signal board communicates with the main control board via a serial port, receives control commands, and simulates voltage, speed, and operating condition signals according to the service requirements. The signal simulation circuitry includes a speed simulation circuit 9, a voltage simulation circuit 10, an operating condition simulation circuit 11, and a digital signal processing circuit.

[0051] The analog signal unit can simulate signals such as tube pressure, speed, and operating conditions, and detect signals such as engine shutdown, emergency, normal operation, and pressure holding. It includes tube pressure analog circuit, speed analog circuit, operating condition analog circuit, and digital input signal processing circuit.

[0052] In this embodiment, the GYK unit is a GYK-160 unit. The GYK unit includes a DMI core board 12, an LVDS splitter circuit 13, an LVDS to HDMI circuit 14, and a DMI LCD screen 15. The DMI core board is connected to the motherboard unit, the DMI core board is connected to the LVDS splitter circuit, the LVDS splitter circuit is connected to the LVDS to HDMI circuit and the DMI LCD screen respectively, and the LVDS to HDMI circuit is connected to the interface unit.

[0053] The DMI unit uses the same hardware as the original DMI hardware unit, maintaining the same hardware configuration, but adds a video output interface. This is achieved using an LVDS-to-2 splitter and an LVDS-to-HDMI converter, allowing for simultaneous display of the DMI interface via an external projector to show vehicle information and status. The LVDS transceiver circuit converts the parallel data sent by the DMI core board into a high-speed serial LVDS signal, then outputs two LVDS signals via the LVDS-to-2 splitter. One signal is used for display on the DMI LCD screen, and the other is output to the interface unit via the LVDS-to-HDMI converter for connecting to an external display.

[0054] The motherboard unit serves as the main communication and interaction unit between the GYK board and the analog signal unit. It connects the GYK unit, the braking interface unit, the analog signal unit, the DMI unit, and the interface unit. It also converts the CAN, LAN, and 422 communication signals between the units and distributes the 24V output from the switching power supply to each unit.

[0055] The interface unit primarily connects the CAN, 422, and LAN signals from the GYK unit, the USB and LAN signals from the analog signal unit, and the HDMI signal from the DMI unit to external devices. It supports communication with external GMS vehicle-mounted equipment, BTM equipment, or analog software, as well as connecting external devices such as leveling and axle temperature control units. The USB interface is used for importing transponder message files and GYK operation log files. It also features a debugging and upgrade interface.

[0056] The power module uses a 220V to 24V switching power supply to output 24V to the motherboard unit to power the entire device.

[0057] The GYK unit includes a first main control board 26, a second main control board 27, a communication recording board 28, and a braking interface board 29. The GYK unit uses the same single-system main control board, communication recording board, and braking interface board as the vehicle-mounted GYK equipment, used to simulate ground equipment conditions for verifying basic GYK data or the GYK main control program and for normal state communication. The braking interface board uses the same interface definition as the vehicle-mounted GYK equipment board. By setting the normal brake line deceleration, normal speed deceleration, emergency brake line deceleration, and emergency speed deceleration via the buttons on the analog signal unit, the corresponding braking status can be displayed on the analog signal unit's screen when the GYK output braking is operated.

[0058] Example 3:

[0059] This embodiment, based on embodiment two, adds specific circuit structures to each analog circuit in the analog signal unit and the DMI unit, providing a GYK device data testing device, the overall architecture of which is as follows: Figure 1 As shown, it includes an analog signal unit 1, a DMI unit 2, a GYK unit 3, a power supply module 4, a motherboard unit 5, an interface unit 6, and a key display unit. The analog signal unit is connected to the motherboard unit, the interface unit, and the key display unit, respectively. The power supply module is connected to the motherboard unit. The motherboard unit is connected to the GYK unit and the DMI unit, respectively. The DMI unit is connected to the interface unit.

[0060] Specifically:

[0061] The analog signal unit can simulate signals such as tube pressure, speed, and operating conditions, and detect signals such as engine shutdown, emergency, normal operation, and pressure holding. It includes tube pressure analog circuit, speed analog circuit, operating condition analog circuit, and digital input signal processing circuit.

[0062] like Figure 2As shown, in the analog voltage converter circuit, the amplitude adjustment module is an operational amplifier, and the signal conversion module includes a differential amplifier, including a dual-channel digital-to-analog converter U6, operational amplifier U7A, operational amplifier U7B, differential amplifier U8, and differential amplifier U9. The REF terminal of the dual-channel digital-to-analog converter U6 is connected to one end of resistor R105, and the other end of resistor R105 is connected to the output terminal of operational amplifier U4B. The inverting input terminal of operational amplifier U4B is grounded, and the non-inverting input terminal of operational amplifier U4B is connected to a 5V power supply and one end of capacitor C27, with the other end of capacitor C27 grounded. The negative input terminal of operational amplifier U4B is connected to the output terminal of operational amplifier U4B, and the positive input terminal of operational amplifier U4B is connected to one end of capacitor C26 and the output terminal of chip U5, with the other end of capacitor C26 grounded. The input terminal of chip U5 is connected to a 5V power supply and one end of capacitor C25, with the other end of capacitor C25 grounded. The VDD terminal of the dual-channel digital-to-analog converter U6 is connected to a 5V power supply. The OUTA terminal of the dual-channel digital-to-analog converter U6 is connected to the positive input terminal of operational amplifier U7B. The negative input terminal of operational amplifier U7B is connected to the output terminal of operational amplifier U7B. The non-inverting input terminal of operational amplifier U7B is connected to a 5V power supply. The output terminal of operational amplifier U7B is connected to one end of resistor R107. The other end of resistor R107 is connected to the Sin+ terminal of differential amplifier U9. The input terminal of differential amplifier U9 is connected to one end of TVS diode D23 and one end of resistor F7. The other end of resistor F7 is connected to the motherboard unit. The other end of TVS diode D23 is connected to the output terminal of differential amplifier U9 and the motherboard unit. Similarly, the OUTB terminal of the dual-channel digital-to-analog converter U6 is connected to the positive input terminal of operational amplifier U7A, the negative input terminal of operational amplifier U7A is connected to the output terminal of operational amplifier U7A, the non-inverting input terminal of operational amplifier U7A is connected to a 5V power supply and one end of capacitor C29, the other end of capacitor C29 is grounded, the output terminal of operational amplifier U7A is connected to one end of resistor R106, the other end of resistor R106 is connected to the Sin+ terminal of differential amplifier U8, the input terminal of differential amplifier U8 is connected to one end of TVS diode D22 and one end of resistor wire F6, the other end of resistor wire F6 is connected to the motherboard unit, and the other end of TVS diode D22 is connected to the output terminal of differential amplifier U8 and the motherboard unit.

[0063] In the tube voltage analog circuit, the dual-channel digital-to-analog converter U6 can output two voltage signals. Each output voltage signal is amplitude-adjusted by the amplitude adjustment module before being input to the signal conditioning module 7, which converts the voltage signal into a current signal. The analog signal unit uses three sets of dual-channel DACs (i.e., three sets of tube voltage analog circuits, each capable of simulating two tube voltage signals), which can simulate six tube voltage signals. The DC current output range of each voltage signal is (4~20) Ma, and the minimum adjustment resolution can meet 0.244 kPa.

[0064] like Figure 3 As shown, the speed simulation circuit includes an opto-isolation chip VP1. The positive terminal of the light-emitting diode in the opto-isolation chip VP1 is connected to one end of a resistor 510R, and the other end of the resistor 510R is connected to a 3.3V power supply. The negative terminal of the light-emitting diode in the opto-isolation chip VP1 is connected to the second MCU. The VCC terminal of the opto-isolation chip VP1 is connected to one end of a resistor R82 and one end of a capacitor C23. The other end of the capacitor C23 is grounded. The other end of the resistor R82 is connected to the Vo terminal of the opto-isolation chip VP1 and one end of a resistor R89. The other end of the resistor R89 ​​is connected to one end of a TVS diode D20 and the motherboard unit. The other end of the TVS diode D20 is grounded.

[0065] In the speed simulation circuit, one speed sensor can output four speed signals, with adjacent speed channels being orthogonal to each other. In this embodiment, the analog signal unit uses an 8-channel opto-isolated chip VP1 push-pull output simplified circuit (i.e., an 8-channel speed simulation circuit), which can simulate two sensors outputting eight speed signals. The output waveform is a square wave, with a high level ≥12V and an operating frequency of 0Hz~20kHz. When the speed is not lower than 30km / h, the maximum permissible deviation of the set value is ±1 km / h; when the speed is lower than 30 km / h, the maximum permissible deviation of the set value is ±0.3 km / h.

[0066] like Figure 4 As shown, the operating condition simulation circuit includes an opto-isolation chip VP6. The positive terminal of the light-emitting diode in the opto-isolation chip VP6 is connected to one end of resistor R102, and the other end of resistor R102 is connected to a 3.3V power supply. The negative terminal of the light-emitting diode in the opto-isolation chip VP6 is connected to the second MCU. The VCC terminal of the opto-isolation chip VP6 is connected to a 24V power supply and one end of capacitor C24, and the other end of capacitor C24 is grounded. The Vo terminal of the opto-isolation chip VP6 is connected to one end of resistor R103 and one end of resistor R104, and the other end of resistor R104 is grounded. The other end of resistor R103 is connected to one end of TVS diode D21 and the motherboard unit, and the other end of TVS diode D21 is grounded.

[0067] In the operating condition simulation circuit, MCU2 (i.e., the second MCU) outputs a high or low level to the opto-isolation chip VP6, which converts the low-voltage signal of MCU2 into a 24V signal. In this embodiment, the analog signal unit has 10 sets of operating condition simulation circuits, which can simulate and output 10 operating condition signals.

[0068] like Figure 5As shown, this embodiment has a total of 4 digital input signal processing circuits, each with the same structure. Taking one of the digital input signal processing circuits as an example, it includes an optocoupler VP2. The emitter of the phototransistor in optocoupler VP2 is grounded. The collector of the phototransistor in optocoupler VP2 is connected to the second MCU and one end of resistor R90. The other end of resistor R90 is connected to a 3.3V power supply. The negative terminal of the light-emitting diode in optocoupler VP2 is grounded. The positive terminal of the light-emitting diode in optocoupler VP2 is connected to one end of resistors R91 and R94. The other end of resistor R91 is connected to the motherboard unit, and the other end of resistor R94 is grounded.

[0069] The circuit features a 4-channel digital input signal processing module that acquires 4 externally input valve signals. Through opto-isolation chips VP2, VP3, VP4, and VP5, the 24V industrial signals are converted into low-voltage signals recognizable by the MCU2. These signals are used to detect the normal, emergency, pressure holding, and engine shutdown signals for each GYK-160 series. The normal braking signal range is DC 0~24V, releasing above 7.2V and engaging below 3V; the emergency braking signal range is DC 0~24V, releasing below 1.4V and engaging above 3V; the pressure holding signal range is DC 0~24V, releasing below 1.4V and engaging above 3V; and the engine shutdown signal is a switching signal.

[0070] The DMI unit includes a DMI core board, an LVDS transceiver circuit, an LVDS-to-2 splitter circuit, and an LVDS-to-HDMI converter circuit. The DMI core board is connected to the LVDS transceiver circuit, which in turn is connected to the LVDS-to-2 splitter circuit. One output of the LVDS-to-2 splitter circuit is connected to the DMI display module, and the other output of the LVDS-to-HDMI converter circuit is connected to the LVDS-to-HDMI converter circuit. The LVDS-to-HDMI converter circuit connects to an external display via an interface unit. The LVDS transceiver circuit includes an LVDS transceiver chip and its peripheral circuitry. The LVDS-to-2 splitter circuit includes an LVDS-to-2 splitter chip and its peripheral circuitry, and the LVDS-to-HDMI converter circuit includes an LVDS-to-HDMI converter chip and its peripheral circuitry.

[0071] Specifically, such as Figure 6As shown, the DMI unit includes an LVDS transceiver chip U27, an LVDS 1-to-2 splitter chip U35, and an LVDS to HDMI chip U32. The TA+ terminal of the LVDS transceiver chip U27 is connected to the RA1+ terminal of the LVDS 1-to-2 splitter chip U35; the TA- terminal of the LVDS transceiver chip U27 is connected to the RA1- terminal of the LVDS 1-to-2 splitter chip U35; the TB+ terminal of the LVDS transceiver chip U27 is connected to the RB1+ terminal of the LVDS 1-to-2 splitter chip U35; the TB- terminal of the LVDS transceiver chip U27 is connected to the RB1- terminal of the LVDS 1-to-2 splitter chip U35; and the TC+ terminal of the LVDS transceiver chip U27 is connected to the RC1+ terminal of the LVDS 1-to-2 splitter chip U35. The TC- terminal of chip U27 is connected to the RC1- terminal of LVDS splitter chip U35. The TCLK+ terminal of LVDS transceiver chip U27 is connected to the RCLK+ terminal of LVDS splitter chip U35. The TC- terminal of LVDS transceiver chip U27 is connected to the RCLK1- terminal of LVDS splitter chip U35. The LVDS_VCC terminal of LVDS transceiver chip U27 is connected to one end of resistor R202, capacitor C195, and 3.3V power supply. The other end of resistor R202 is connected to the 3.3V power supply. The ground end of capacitor C195 is connected to one end of resistor R203. One end of resistor R203 is connected to LVDS_GND of LVDS transceiver chip U27. The other end of resistor R203 is grounded.

[0072] The VDD terminal of the LVDS 1-to-2 splitter chip U35 is connected to a 3.3V power supply, one end of resistor R89, and one end of capacitor C105. The other end of resistor R89 ​​is connected to the PD terminal of the LVDS 1-to-2 splitter chip U35, and the other end of capacitor C105 is grounded. The CAP terminal of the LVDS 1-to-2 splitter chip U35 is connected to one end of capacitor C96 and one end of capacitor C95. The other ends of capacitor C96 and the other end of capacitor C95 are grounded.

[0073] The TA2- terminal of the LVDS-to-HDMI splitter chip U35 is connected to the L0_N0 terminal of the LVDS-to-HDMI chip U32 via resistor R56; the TA2+ terminal of the LVDS-to-HDMI splitter chip U35 is connected to the L0_P0 terminal of the LVDS-to-HDMI chip U32 via resistor R57; the TB2- terminal of the LVDS-to-HDMI splitter chip U35 is connected to the L1_N0 terminal of the LVDS-to-HDMI chip U32 via resistor R58; and the TB2+ terminal of the LVDS-to-HDMI splitter chip U35 is connected to the L1_P0 terminal of the LVDS-to-HDMI chip U32 via resistor R59. The TC2- terminal of the LVDS-to-HDMI chip U35 is connected to the L2_N0 terminal of the LVDS-to-HDMI chip U32 via resistor R62; the TC2+ terminal of the LVDS-to-HDMI chip U35 is connected to the L2_P0 terminal of the LVDS-to-HDMI chip U32 via resistor R65; the TCLK2- terminal of the LVDS-to-HDMI chip U35 is connected to the LC_N0 terminal of the LVDS-to-HDMI chip U32 via resistor R66; and the TCLK2+ terminal of the LVDS-to-HDMI chip U35 is connected to the LC_P0 terminal of the LVDS-to-HDMI chip U32 via resistor R67.

[0074] In this embodiment, the DMI unit communicates with the GYK unit through the motherboard unit to display vehicle information and status. The DMI unit uses the original DMI hardware system, maintaining the same hardware configuration, but adds a video output interface. This is implemented using an LVDS-to-2 splitter and an LVDS-to-HDMI converter, allowing for simultaneous display of the DMI interface via an external projector to show vehicle information and status. The LVDS transceiver chip U27 converts the parallel data sent by the DMI core board into a high-speed serial LVDS signal, which is then output as two LVDS signals via the LVDS-to-2 splitter chip U35. One signal is used for display on the DMI unit, and the other is output to an interface via the LVDS-to-HDMI converter chip U32 for connecting to an external display.

[0075] The motherboard unit is used to connect the GYK unit, interface unit, DMI unit, and analog signal unit, and is the signal conversion unit of the entire device.

[0076] The interface unit outputs internal signals into different communication interfaces, which can be connected to external devices for easy debugging, including network interface, USB interface and HDMI interface.

[0077] The button display unit is connected to the analog signal unit and is used to set and display the state of the analog signal.

[0078] The power module supplies power to the entire device, and the output voltage is distributed to other units after reaching the motherboard unit.

[0079] The GYK equipment data testing device provided by this invention has onboard software testing and verification functions and basic data verification functions. During software testing and verification, parameters are set on the DMI, entering the mode state, and information such as locomotive signals, speed, and pipe pressure are set. Software functions can be tested and verified according to actual field usage scenarios or software testing outline requirements. During basic data verification, basic data is imported through the USB interface of the interface unit. A data path is selected, and the GYK-160 software data testing device automatically displays the data information at the corresponding location. Speed, pipe pressure, and signals are generated through the analog signal unit, allowing verification of whether there are errors in the data displayed during operation and confirming the correctness of basic data display and control. It also has a data verification function, allowing import of data, retrieval of basic data, and simulation of operation at the corresponding location to observe whether each data line is activated, thus verifying the accuracy of the data control. The GYK-160 software data testing device interacts with the outside world through buttons, controlling the internal analog signal unit and vehicle signal unit to send track circuit information, transponder message information, and speed signal information respectively; it simulates ground equipment conditions to verify GYK basic data or GYK main control program. This device performs comprehensive testing and verification of its software and data, improving testing efficiency, reducing testing costs, and simulating various operating scenarios in a laboratory environment.

[0080] The embodiments described above are merely preferred solutions of this utility model and are not intended to limit this utility model in any way. Other variations and modifications are possible without departing from the technical solutions described in the claims.

Claims

1. A GYK device data testing apparatus, characterized in that, It includes an analog signal unit and a motherboard unit connected to the analog signal unit. The motherboard unit is connected to a DMI unit and a GYK unit, and a power module. The DMI unit is connected to an interface unit. The analog signal unit is connected to the interface unit, and the interface unit communicates with external GMS vehicle equipment. The analog signal unit includes a digital input signal processing circuit and a tube voltage analog circuit.

2. The GYK device data testing apparatus according to claim 1, characterized in that, The analog signal unit includes a first MCU and a vehicle signal board connected to the first MCU. The first MCU is connected to the main board unit through a first CAN circuit. The first MCU is connected to a core board. The core board is connected to the main board unit and the interface unit. The vehicle signal board includes a second MCU and a tube voltage analog circuit, a speed analog circuit, a working condition analog circuit, and a digital input signal processing circuit connected to the second MCU.

3. The GYK device data testing apparatus according to claim 1, characterized in that, The DMI unit includes a DMI core board, which is connected to an LVDS transceiver circuit. The LVDS transceiver circuit is connected to an LVDS 1-to-2 splitter circuit. One output of the LVDS 1-to-2 splitter circuit is connected to the DMI display module, and the other output of the LVDS conversion circuit is connected to an LVDS-to-HDMI circuit. The LVDS-to-HDMI circuit is connected to an external display through an interface unit.

4. A GYK equipment data testing device according to claim 1 or 2, characterized in that, The tube voltage analog circuit includes a dual-channel digital-to-analog converter. Both voltage signal output terminals of the dual-channel digital-to-analog converter are connected to an amplitude adjustment module, and the amplitude adjustment module is connected to a signal conditioning module.

5. A GYK device data testing device according to claim 2, characterized in that, The speed simulation circuit includes a first opto-isolation chip, in which the positive terminal of the light-emitting diode is connected to a 3.3V power supply, the negative terminal of the light-emitting diode is connected to a second MCU, the VCC terminal of the first opto-isolation chip is connected to its Vo terminal, and the Vo terminal of the first opto-isolation chip is connected to an interface unit.

6. A GYK device data testing apparatus according to claim 2 or 5, characterized in that, The operating condition simulation circuit includes a second opto-isolation chip. The negative terminal of the light-emitting diode in the second opto-isolation chip is connected to the second MCU, the positive terminal of the light-emitting diode is connected to a 3.3V power supply, the VCC terminal of the second opto-isolation chip is connected to a 24V power supply, and the Vo terminal of the second opto-isolation chip is connected to the interface unit.

7. A GYK equipment data testing device according to claim 2 or 5, characterized in that, The digital input signal processing circuit includes an optocoupler. The positive terminal of the light-emitting diode in the optocoupler is connected to the second MCU and connected to the negative terminal of the light-emitting diode through a first resistor. The negative terminal of the light-emitting diode is grounded. The collector of the phototransistor in the optocoupler is connected to the 3.3V power supply and the interface unit. The emitter of the phototransistor in the optocoupler is grounded.

8. A GYK device data testing apparatus according to claim 1, 2, 3, or 5, characterized in that, The GYK unit includes a first main control board and a second main control board, both of which are connected to the motherboard unit. The GYK unit also includes a communication recording board and a braking interface board connected to the motherboard unit.

9. A GYK device data testing apparatus according to any one of claims 1, 2, 3, or 5, characterized in that, It also includes a key display unit connected to an analog signal unit, the key display unit including a display screen, keys and an encoder.

10. A GYK device data testing device according to claim 2, characterized in that, The analog signal unit has four sets of tube voltage analog circuits, eight sets of speed analog circuits, four sets of operating condition analog circuits, and four sets of digital input signal processing circuits.

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