An integrated display screen for fault self-diagnosis of diesel locomotives

Abstract

The present invention discloses a fault self-diagnosis diesel locomotive integrated display screen, including: a main control module, a communication module, a power control module, a data storage module, a satellite positioning module, a reconnection module, and a fault self-diagnosis diesel locomotive integrated display screen; the main control module is used for the operation and control of the display screen; the communication module is used for information interaction with other devices; the power control module is used for power supply control, intelligent monitoring, ID identification, digital quantity input and output; the data storage module is used for storing data; the satellite positioning module is used to determine the locomotive position and speed; the reconnection module is used for reconnection information interaction with the locomotive. The present invention can replace the commonly used driver console switches, instruments, indicator lights and locomotive display screens, making the console surface more concise; it can perform fault self-diagnosis functions, and through real-time collection and data comparison, accurately diagnose and predict faults on the locomotive display screen itself, so that users can eliminate and solve faults in advance.

Description

Technical Field

[0001] The invention relates to the field of locomotive display screens, and in particular to an integrated display screen for a fault self-diagnosis diesel locomotive. Background Art

[0002] The locomotive display screen is a key component of the locomotive. It is installed on the driver's console and is a window for locomotive data display and simple human-computer interaction. Its reliability directly restricts the stability of the locomotive.

[0003] Most locomotive display screens have complex internal structures and high failure rates. If an intelligent monitoring device can be developed to accurately diagnose and predict the faults of the locomotive display screens in use, it can greatly reduce temporary repairs, minor repairs and machine damage caused by locomotive display screen failures. However, due to the limited space in the driver's cab, it is not suitable to install new electronic devices; it is currently impossible to accurately diagnose and predict the faults of the locomotive display screens in use. In addition to the locomotive display screen, most locomotive driver consoles also contain a large number of switches, instruments, indicator lights, etc.; this makes the entire driver console structure complicated and is not conducive to the driver's driving operation. Summary of the invention

[0004] The present invention provides a fault self-diagnosis diesel locomotive integrated display screen to overcome the above problems.

[0005] The present invention comprises: a power supply control module;

[0006] The power control module includes: an intelligent fault diagnosis unit, a power supply control unit, a digital input and output unit, and a communication unit;

[0007] The power control unit is used to manage power, control brightness, maintain power-off status, amplify audio, and restart the system when a problem occurs;

[0008] The digital input and output unit is used to collect and output digital signals and the ID identification of the locomotive display screen position;

[0009] A communication unit, used to receive internal control instructions sent by the main control module and transmit the results of the intelligent fault diagnosis unit to the main control module;

[0010] The intelligent fault diagnosis unit is used to collect and condition the circuit board temperature, voltage ripple, and communication parameters in the locomotive display screen, and perform waveform-level signal analysis and processing to achieve fault self-diagnosis and start built-in testing;

[0011] The analysis and processing includes: when the collected value exceeds the corresponding set range, the display screen interface displays a prompt message to prompt the user that there is a problem with the corresponding module of the display screen.

[0012] Furthermore, the intelligent fault diagnosis unit includes: a signal control processor, a plurality of communication interfaces, a signal acquisition and conditioning circuit, and a multi-channel signal conversion circuit;

[0013] The fault diagnosis strategies adopted by the intelligent fault diagnosis unit include:

[0014] S1. The intelligent fault diagnosis unit collects and conditions the circuit board temperature and voltage ripple of each board in the locomotive display screen, and the conditioning includes: amplification, attenuation, isolation, buffering, filtering and cold end compensation, so that the collected and conditioned signals meet the input conditions of the converter;

[0015] Sending the collected signal to the signal control processor to analyze and process the signal, wherein the analysis and processing is implemented by a set mathematical model algorithm;

[0016] When the collected value exceeds the corresponding set range, the display screen interface displays a prompt message, which indicates to the user that there is a problem with the corresponding module of the display screen, and stores the fault information in the locomotive display screen data storage module;

[0017] S2, the intelligent fault diagnosis unit collects the communication parameters of the Ethernet communication of the main control module and the corresponding communication of each communication module;

[0018] And send it to the signal control processor through the multi-channel signal conversion circuit to determine whether it complies with the corresponding standard communication protocol and set value;

[0019] If the collected communication parameters do not conform to the standard communication protocol, the display screen interface will display a prompt message and store the fault information in the locomotive display screen data storage module.

[0020] Furthermore, it also includes: a communication module, a data storage module, a satellite positioning module, a fault self-diagnosis diesel locomotive integrated display screen, and a main control module.

[0021] Furthermore, starting the built-in test includes: when the locomotive display screen is initialized, a functional check is performed before the power control module works to determine whether the hardware functions of the power supply unit, the digital input and output unit, and the communication unit are normal.

[0022] Further, the communication module includes: an external communication module, an RS232 communication submodule;

[0023] The external communication module is used to exchange information with other devices on the locomotive bus and transmit the information to the main control module for analysis and processing. The analysis and processing includes: the main control module parses the information transmitted by each communication submodule into corresponding data according to the corresponding communication protocol and displays it according to the settings of the application program;

[0024] The RS232 communication submodule is used to receive satellite positioning information and reconnection information, and transmit the information to the main control module for analysis and processing. The reconnection information includes: positioning, time, date, speed, and reconnection information; the reconnection information also includes: the vehicle number of the reconnected locomotive, machine control status, electric brake status, diesel engine status, traction value, traction power and fuel quantity.

[0025] Furthermore, it also includes: a reconnection module;

[0026] The reconnection module is used to transmit reconnection information with the reconnection locomotive. The reconnection information interaction includes: the main control module transmits the reconnection data to the reconnection module through the RS232 communication submodule, and transmits it to the reconnected locomotive through the reconnection router.

[0027] The present invention integrates multiple control functions and display functions into the display screen, and self-diagnoses whether the locomotive display screen has any faults. The locomotive display screen is mainly used for a certain Harmony diesel locomotive crane, and can replace most of the commonly used driver console switches, instruments, indicator lights and locomotive display screens, making the entire driver console more concise; it can perform fault self-diagnosis function, through real-time collection and data comparison, accurately diagnose and predict faults of the locomotive display screen itself, so that users can eliminate and solve faults in advance. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0029] Figure 1 It is a structural principle block diagram of the present invention;

[0030] Figure 2 This is a functional principle block diagram of the power control module of the present invention. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Example 1

[0033] like Figure 1 As shown, the present invention includes: a main control module, a communication module, a power control module, a data storage module, a satellite positioning module, a reconnection module and a fault self-diagnosis diesel locomotive integrated display screen are integrated into one device.

[0034] The main control module and each communication submodule are stacked together through the PC104PLUS bus, from top to bottom, they are the main control module, MVB communication submodule, RS232 communication submodule, RS422 communication submodule, and CAN communication submodule. Each layer of modules and the outermost module and the casing are fastened with M3 yin and yang copper columns. In order to increase the heat dissipation of the main control module, heat conductive sheets, aluminum foil tapes, and thermal conductive silicone are added between the main control module and the outer casing heat sink to make them closer and dissipate heat better. The power control module, satellite positioning module, and reconnection module are fastened to the box of the locomotive display screen with screws and straight copper columns.

[0035] After the main control module runs the application, it exchanges information with other locomotive equipment through each communication submodule and its own 100M Ethernet communication interface; and exchanges information with the power control module, satellite positioning module, reconnection module, etc. through its own serial port and RS232 communication submodule.

[0036] The external interfaces of the integrated display screen of the fault self-diagnosis diesel locomotive all adopt JY3470 series domestic aviation connectors to ensure the reliable connection between the locomotive display screen and other external equipment.

[0037] In the integrated display screen of the fault self-diagnosis diesel locomotive, most of the commonly used driver console switches, indicator lights and fault self-diagnosis functions are mainly completed through the power control module.

[0038] like Figure 2 As shown, it is a functional principle block diagram of the power control module of the present invention. The power control module is the core power supply control and intelligent monitoring module of the entire locomotive display screen. Its circuit can be divided into four parts according to its function: power supply control unit, digital input and output unit, intelligent fault diagnosis unit, and communication unit.

[0039] The main control chip of the power supply control unit is STM32F107VCT6, which is also the main control chip of the entire power control module. It is mainly responsible for power management, brightness control, power-off retention, audio amplification, and the hardware watchdog of the entire locomotive display screen, that is, restarting the system when a problem occurs in the system. Power management means that the power supply control unit can perform level conversion. The multiple +3.3V of the converted isolated output is mainly used to power the chip of the entire power control module; the multiple +5V of the converted isolated output is mainly used to power other modules in the locomotive display screen. The main control chip can enable or disable the power supply of these modules to manage power consumption, and can also control the power startup sequence of other modules of the locomotive display screen to minimize the startup inrush current. Brightness control means that the power supply control unit can boost the converted +5V to +20~40V, and the main control chip controls the output in 21 levels; that is, the backlight intensity of the industrial LED LCD display can be controlled according to demand, and any of the 21 predefined brightness settings can be selected through software commands. The default brightness level of the initial brightness is 10. Power-off retention means that the power supply control unit can maintain the power supply of key components for about 120 seconds after the external power supply is powered off. Audio amplification means that the power supply control unit can amplify the power of the audio signal of the main control module so that the entire locomotive display can directly drive the speaker. Hardware watchdog refers to the use of the timer of the main control chip of the power supply control unit to build a hardware watchdog circuit, which is the basis for the entire locomotive display to implement a watchdog.

[0040] The digital input and output unit is controlled by STM32F107VCT6, which can collect up to 8 digital input signals and control 8 digital output signals; it mainly replaces some commonly used switches and indicator lights on the original driver's console, and the locomotive display screen position ID recognition is also completed through this unit.

[0041] The intelligent fault diagnosis unit is mainly composed of a high-performance mixed-signal control processor ADSP-CM408, a variety of communication interfaces, signal acquisition and conditioning circuits, and multi-channel signal conversion circuits. The floating-point unit of the processor ADSP-CM408 has a maximum operating frequency of 240MHz, and also integrates a maximum of 384KB SRAM memory, a maximum of 2MB flash memory, and multiple accelerators. The communication interfaces include Ethernet communication interface, CAN communication interface, RS232 communication interface, RS422 communication interface, general I / O (GPIO) interface, and 16-bit asynchronous external memory interface. The signal acquisition and conditioning circuit can be divided into voltage acquisition and conditioning circuit, current acquisition and conditioning circuit, and temperature acquisition and conditioning circuit. Different acquisition signals are collected and adjusted by the corresponding hardware circuits and sent to the multi-channel signal conversion circuit; the multi-channel signal conversion circuit can transmit the acquisition values ​​to the processor in a time-sharing manner for waveform-level signal analysis and processing. Each communication parameter is directly transmitted to the processor by each communication interface circuit for processing. The processing result is temporarily stored in the chip of the intelligent fault diagnosis unit, and can also be dumped to the memory card in the locomotive display screen through instructions. It can be directly viewed through the corresponding interface of the display screen, which is convenient for maintenance personnel to quickly locate the fault point and solve the fault.

[0042] The communication unit uses SP3232EEN-L / TR as the communication chip and has two RS232 interfaces. It is the bridge for the entire power control module to communicate with the main control module. It is responsible for receiving the internal control instructions sent by the main control module and transmitting the results of the intelligent fault diagnosis unit to the main control module through the communication unit.

[0043] Example 2

[0044] The present invention comprises: a main control module, a communication module, a power control module, a data storage module, a satellite positioning module, a reconnection module, and a fault self-diagnosis diesel locomotive integrated display screen;

[0045] The communication module is connected to the main control module via the PC104PLUS bus;

[0046] The power control module is connected to the power supply of each module through a wiring harness;

[0047] The data storage module is connected to the main control module through the finished product cable;

[0048] The satellite positioning module and the reconnection module are connected to the RS232 communication submodule through a wiring harness; the fault self-diagnosis diesel locomotive integrated display screen is connected to the VGA / LED display interface of the main control module through a shielded wiring harness;

[0049] The main control module is used for the calculation and control core of the locomotive display screen and is the final execution unit for information processing and program operation;

[0050] The communication module is used to communicate with other devices on the corresponding bus of the locomotive and send the interactive information to the main control module;

[0051] The power control module is used for power supply control, intelligent monitoring, ID recognition, and digital input and output of the locomotive display screen;

[0052] The data storage module is used to store the embedded Ubuntu operating system, application system, system temporary data, comparison results of its own intelligent diagnosis, and fault data;

[0053] The satellite positioning module is used to receive signals from Beidou satellites to determine the position and speed of the locomotive, and transmit the time, position and speed information to the main control module;

[0054] The reconnection module is used to exchange reconnection information with the reconnection locomotive;

[0055] The integrated display screen of the diesel locomotive for fault self-diagnosis is used to display data.

[0056] The processor of the main control module adopts LX800, and the main control module includes: embedded Ubuntu operating system, the main control module also includes: 256MB DRAM BIOS ROM, 100M Ethernet communication interface, LPT1 parallel interface, 2-way RS232 serial interface, speaker interface, AT-IDE hard disk interface, VGA / LED display interface, PC104PLUS bus and 4 USB 2.0 external device interfaces;

[0057] The main control module exchanges information with other locomotive equipment through various communication sub-modules and Ethernet communication interface; the main control module exchanges information with the power control module, satellite positioning module, and reconnection module through the serial port and RS232 communication sub-module; the information includes: traction, traction power, handle position, commutator, locomotive mileage, working condition, time and date, warning, fuel quantity, braking information, fault information, and reconnection information.

[0058] The on-board microcomputer is used to collect information, which is transmitted to the CAN communication submodule of the display screen through the CAN bus and then to the main control module. The information includes: traction, traction power, handle position, commutator, locomotive mileage, and working condition information;

[0059] The satellite positioning module receives the time, date, and locomotive speed through the antenna, and transmits them to the main control module through the RS232 module;

[0060] The fuel control box collects the fuel quantity and transmits it to the main control value module through the RS422 communication submodule.

[0061] The other components in the brake system collect the brake information and transmit it to the main control value module through the RS422 communication submodule via the IPM module;

[0062] The fault information collected by the power control module is directly transmitted to the main control module through the power control module; the fault information from other components of the locomotive is transmitted to the corresponding communication submodule through the CAN communication bus or RS232, and then to the main control module.

[0063] The main control module transmits the reconnection information to the reconnection module through the RS232 communication submodule, and transmits it to the reconnection router of the reconnection locomotive through the reconnection router in the car. The reconnection router transmits it to the control module through the reconnection module and the RS232 communication submodule in turn.

[0064] The communication module includes: RS232 communication submodule, external bus communication module: MVB communication submodule, RS422 communication submodule, CAN communication submodule, and the submodules in the prime communication module are connected together through the PC104PLUS bus;

[0065] The MVB communication submodule is used to exchange information with the devices on the locomotive MVB bus, and transmit the information to the main control module through the PC104PLUS bus for analysis and processing. The analysis and processing includes: the main control module parses the information transmitted by each communication submodule into corresponding data according to the corresponding communication protocol, and displays or compares it according to the settings of the application program;

[0066] RS232 communication submodule, used to receive information transmitted by satellite positioning module and reconnection module, and transmit the information to main control module through PC104PLUS bus for analysis and processing. The information includes: positioning, time, date, speed, and reconnection information;

[0067] RS422 communication submodule, used to exchange information with the locomotive brake system and fuel control box equipment, and transmit the information to the main control module through the PC104PLUS bus for analysis and processing. The information includes: brake information and fuel quantity;

[0068] CAN communication submodule is used to exchange information with the devices on the locomotive CAN bus, and transmit this information to the main control module through the PC104PLUS bus for analysis and processing;

[0069] The communication module is connected to the main control module via the PC104PLUS bus. The communication module is used to exchange information with other devices on the corresponding bus of the locomotive and transmit the information to the main control module for analysis and processing.

[0070] The power control module includes: a power supply control unit, a digital input and output unit, an intelligent fault diagnosis unit, and a communication unit. Each unit in the power control module is integrated on the power control module;

[0071] The power control unit is used to manage power, control brightness, maintain power-off status, amplify audio, and restart the system when a problem occurs, i.e., the hardware watchdog;

[0072] The hardware watchdog here refers to the use of the timer of the main control chip of the power supply control unit to build a hardware watchdog circuit, which is the basis for the entire locomotive display screen to implement the watchdog; its function is to prevent the locomotive display screen program from running away, and it can also prevent the locomotive display screen program from having an infinite loop when running online.

[0073] The specific implementation process is to use the timer of the main control chip of the power supply control unit to build a timing circuit, and its timing output is connected to the reset terminal of the main control chip of the main control module. The program clears the timer within a certain time range (commonly known as "feeding the dog"). Therefore, when the program works normally, the timer can never overflow, and a reset signal can not be generated. If the program fails and does not reset the watchdog within the timing period, the watchdog timer overflows to generate a reset signal and restart the entire locomotive display.

[0074] The digital quantity input and output unit is used for digital quantity collection and output, replacing some commonly used switches and indicator lights on the original driver's console; the digital quantity input and output unit is also used for locomotive display screen position ID identification.

[0075] Intelligent fault diagnosis unit, including: high-performance mixed signal control processor ADSP-CM408, multiple communication interfaces, signal acquisition and conditioning circuit, multi-channel signal conversion circuit;

[0076] The fault diagnosis includes:

[0077] S1. The intelligent fault diagnosis unit collects and conditions the circuit board temperature and voltage ripple of each board in the locomotive display screen, and the conditioning includes: amplification, attenuation, isolation, buffering, filtering and cold end compensation, so that the collected analog signal is suitable for the input of the converter;

[0078] Send the collected data to the signal control processor for waveform-level signal analysis and processing, wherein the analysis and processing is implemented by a set mathematical model algorithm;

[0079] Specifically, the analysis and processing is implemented by programming, including the comparison of the operating temperature and voltage ripple below. The "analysis and processing" process is implemented according to the operation algorithm composed of a certain mathematical model, that is, a series of analog operations such as analog filters, multipliers, differential amplifiers, etc. are used to form an analog processing system to obtain the characteristic parameters of the signal, such as mean, root mean square value, autocorrelation function, probability density function, power spectrum density function, etc. In addition, since the signal control processor can only process data of limited length, the long sequence must be truncated. Some errors will be generated during truncation, so sometimes the truncated digital sequence must be weighted (multiplied by a window function) to become a new finite time series. If necessary, a special program can be designed for digital filtering. Then the obtained finite time series is operated according to the given program. For example, probability statistics, correlation analysis, modeling and identification in the time domain, spectrum analysis, power spectrum analysis, transfer function analysis in the frequency domain, etc.

[0080] The operating temperature of the circuit board is set to -40~+70℃, and the maximum value of the voltage ripple is 0.2V. When the collected value exceeds the corresponding set range, the display screen interface displays a prompt message, which indicates that there is a problem with the corresponding module of the display screen, and the fault information is stored in the locomotive display screen data storage module;

[0081] S2, the intelligent fault diagnosis unit collects the communication parameters of the Ethernet communication of the main control module and the corresponding communication of each communication module,

[0082] And send it to the signal control processor through the multi-channel signal conversion circuit to determine whether it complies with the corresponding standard communication protocol and set value;

[0083] Specifically, for CAN communication, we use the CAN-bus protocol specification V2.0; the setting values ​​include the baud rate of 500Kbps, the frame type of extended frame, and the frame format of data frame.

[0084] If the collected communication parameters do not conform to the standard communication protocol, the display screen interface will display a prompt message and store the fault information in the locomotive display screen data storage module.

[0085] The intelligent fault diagnosis unit is used to collect and condition the working circuit board temperature, voltage ripple, and communication parameters of each board in the locomotive display screen, and perform waveform-level signal analysis and processing;

[0086] The analysis and processing includes: when the collected value exceeds the corresponding set range, the display screen interface displays a prompt message to remind the user that there is a problem with the corresponding module of the display screen;

[0087] The setting range includes: the operating temperature of the circuit board temperature is -40 to +70°C, and the maximum value of the voltage ripple is 0.2V; the intelligent fault diagnosis unit is also used to start the built-in test;

[0088] The communication unit uses SP3232EEN-L / TR as the communication chip and is the bridge for the entire power control module to communicate with the main control module. It is responsible for receiving the internal control instructions sent by the main control module and transmitting the results of the intelligent fault diagnosis unit to the main control module through the communication unit.

[0089] The power control module is used for power supply control, intelligent monitoring, ID recognition, and digital input and output.

[0090] The startup built-in test includes: the entire locomotive display screen is initialized during the functional check before the power control module works normally, to determine whether the hardware functions of the power supply unit, digital input and output unit, and communication unit are normal.

[0091] Beneficial effects:

[0092] 1. The present invention integrates multiple control functions and display functions into the display screen, and self-diagnoses whether the locomotive display screen has any faults. The locomotive display screen is mainly used for a certain Harmony diesel locomotive crane, and can replace most of the commonly used driver console switches, instruments, indicator lights and locomotive display screens, making the entire driver console more concise; it can perform fault self-diagnosis function, through real-time collection and data comparison, accurately diagnose and predict faults of the locomotive display screen itself, so that users can eliminate and solve faults in advance.

[0093] 2. The present invention is an electronic platform for the driver's cab that integrates multiple electronic functions. It can communicate with the locomotive braking system, fuel control box, on-board microcomputer and other equipment, interconnect the locomotive command and control functions, integrate the entire locomotive control for management, and make the locomotive driver's operation simpler and more convenient.

[0094] 3. The present invention can replace most of the commonly used switches, instruments, indicator lights and locomotive computer display panels on the driver's console, making the entire driver's console surface more concise.

[0095] 4. The present invention integrates multiple control and display functions in one. The driver can view important locomotive operation data through the locomotive display screen, and can directly communicate and respond to various locomotive subsystems and on-board microcomputers through the locomotive display screen.

[0096] 5. The present invention can perform fault self-diagnosis. Through real-time collection and data comparison, accurate fault diagnosis and prediction can be performed on the locomotive display screen itself, which is convenient for users to eliminate and solve faults in advance.

[0097] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fault self-diagnosis diesel locomotive integrated display screen, characterized in that: include: Power control module; The power control module includes: an intelligent fault diagnosis unit, a power supply control unit, a digital input and output unit, and a communication unit; The power control unit is used to manage power, control brightness, maintain power-off status, amplify audio, and restart the system when a problem occurs; The digital input and output unit is used to collect and output digital signals and the ID identification of the locomotive display screen position; A communication unit, used to receive internal control instructions sent by the main control module and transmit the results of the intelligent fault diagnosis unit to the main control module; The intelligent fault diagnosis unit is used to collect and condition the circuit board temperature, voltage ripple, and communication parameters in the locomotive display screen, and perform waveform-level signal analysis and processing to achieve fault self-diagnosis and start built-in testing; The analysis and processing includes: when the collected value exceeds the corresponding set range, the display screen interface displays a prompt message to prompt the user that there is a problem with the corresponding module of the display screen; The intelligent fault diagnosis unit includes: a signal control processor, multiple communication interfaces, a signal acquisition and conditioning circuit, and a multi-channel signal conversion circuit; The fault diagnosis strategy adopted by the intelligent fault diagnosis unit includes: S1. The intelligent fault diagnosis unit collects and conditions the circuit board temperature and voltage ripple of each board in the locomotive display screen, and the conditioning includes: amplification, attenuation, isolation, buffering, filtering and cold end compensation, so that the collected and conditioned signals meet the input conditions of the converter; Sending the collected signal to the signal control processor to analyze and process the signal, wherein the analysis and processing is implemented by a set mathematical model algorithm; When the collected value exceeds the corresponding set range, the display screen interface displays a prompt message, which indicates to the user that there is a problem with the corresponding module of the display screen, and stores the fault information in the locomotive display screen data storage module; S2, the intelligent fault diagnosis unit collects the communication parameters of the Ethernet communication of the main control module and the corresponding communication of each communication module; And send it to the signal control processor through the multi-channel signal conversion circuit to determine whether it complies with the corresponding standard communication protocol and set value; If the collected communication parameters do not conform to the standard communication protocol, the display screen interface will display a prompt message and store the fault information in the locomotive display screen data storage module; Communication module, data storage module, satellite positioning module, fault self-diagnosis diesel locomotive integrated display screen, main control module; The startup built-in test includes: when the locomotive display screen is initialized, a function check is performed before the power control module works to determine whether the hardware functions of the power supply unit, the digital input and output unit, and the communication unit are normal.

2. The integrated display screen for self-diagnosis of a diesel locomotive according to claim 1, characterized in that: The communication module includes: an external communication module and an RS232 communication submodule; The external communication module is used to exchange information with other devices on the locomotive bus and transmit the information to the main control module for analysis and processing. The analysis and processing includes: the main control module parses the information transmitted by each communication submodule into corresponding data according to the corresponding communication protocol and displays it according to the settings of the application program; The RS232 communication submodule is used to receive satellite positioning information and reconnection information, and transmit the information to the main control module for analysis and processing. The reconnection information includes: positioning, time, date, speed, and reconnection information; the reconnection information also includes: the vehicle number of the reconnected locomotive, machine control status, electric brake status, diesel engine status, traction value, traction power and fuel quantity.

3. The integrated display screen for self-diagnosis of a diesel locomotive according to claim 1, characterized in that: Also includes: Reconnection module; The reconnection module is used to transmit reconnection information with the reconnection locomotive. The reconnection information interaction includes: the main control module transmits the reconnection data to the reconnection module through the RS232 communication submodule, and transmits it to the reconnected locomotive through the reconnection router.

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