An on-board intelligent diagnosis and maintenance method for tamping vehicles

Abstract

The present application discloses an on-board intelligent diagnosis and maintenance method for a tamping vehicle, including an active diagnosis process, which includes the following steps: the on-board control network system collects key switches and operating actions, and determines whether to trigger active diagnosis, and determines whether the systems including high-speed running, hydraulic system, operation running, tamping system, tamping posture, leveling system, track shifting system and automatic centering are working normally according to the control logic. If so, it determines whether the trigger control logic can output normally. If so, the operation triggers the program to enter the diagnosis process. The diagnosis process determines whether the logic output is satisfied according to the control logic, and searches for the signal state required to satisfy the logic in the logic formula. If it is inconsistent with the current signal state, the alarm bit is filled in the sent communication protocol. The present application can solve the technical problems of the existing diagnosis and maintenance methods, such as the complex control logic, the inability of operators to quickly locate and handle problems, and the lack of analysis methods for complex non-logical faults.

Description

Technical Field

[0001] The present application relates to the technical field of railway engineering machinery, and in particular to an on-board intelligent diagnosis and operation method for a tamping vehicle. Background Art

[0002] Tamping vehicles are large-scale track maintenance machines used for railway maintenance and repair. They are widely used by major railway bureaus for their high efficiency and precision. Currently, with the continuous advancement of intelligent information technology in the railway industry, railway bureaus have placed higher demands on on-site fault diagnosis, processing, analysis, and data operations and maintenance management. Onboard intelligent diagnostics, integrating advanced sensors, data processing, and analysis technologies, enables real-time monitoring of the tamping vehicle's operating status, including the working conditions of each component, performance parameters, and potential fault information. This not only enables the timely identification and resolution of potential problems, preventing them from occurring or worsening, but also provides maintenance personnel with precise fault location and repair guidance, significantly improving maintenance efficiency and quality. Operations and maintenance management collects and analyzes tamping vehicle operating data, establishing a per-vehicle database onboard the vehicle to provide data support for equipment maintenance and optimization.

[0003] In the prior art, the following documents are mainly related to this application:

[0004] Prior Art 1 is a Chinese invention application filed by Zhuzhou Times Electronic Technology Co., Ltd. and China State Railway Group Co., Ltd. on February 16, 2016, and published on June 22, 2016, with publication number CN105700516A. This application discloses a remote diagnostic system for existing rail engineering machinery, comprising: an onboard host, a switch, a front-end analog acquisition board, a multi-channel analog acquisition board, a programmable host board, one or more digital acquisition modules for train monitoring, and one or more analog acquisition modules for train monitoring. The onboard host exchanges data with third-party devices via the switch. The front-end analog acquisition board, the multi-channel analog acquisition board, and the programmable host board all transmit collected operating status data of the rail engineering machinery to the onboard host via a fieldbus. The digital acquisition module for train monitoring and the analog acquisition module for train monitoring transmit collected train safety monitoring data of the rail engineering machinery to the onboard host. This invention addresses the technical issues of existing rail engineering machinery, such as the difficulty in collecting and monitoring information, inefficient fault handling, difficult on-site management, and difficult installation and wiring of onboard equipment.

[0005] Prior art 2 is Wang Yan's master's thesis, "Research on Health Diagnosis of the Tamping Operation System of a Tamping Vehicle," published in the Journal of Shijiazhuang Railway University, Issue 12, 2014. Based on a systematic analysis of the working principle of the tamping operation system of the DCL-32 tamping vehicle, this thesis studied the failure mechanisms of the main components of each subsystem, derived a complete set of measurement points for each subsystem, and provided corresponding troubleshooting solutions for different faults. For the electrical system, a logical diagnostic fault tree was constructed, and an expert reasoning fault library was established. For the hydraulic system, a combination of AMESim simulation and experiments was used to conduct fault simulation and identification research. For the mechanical system, a fault diagnosis method based on spectrum analysis was studied. In the LabVIEW development environment, based on modular design concepts, a tamping vehicle tamping operation health diagnosis system software was developed, which realizes the functions of online monitoring, fault alarm, and fault identification of the tamping operation system of the tamping vehicle.

[0006] However, existing technologies suffer from complex control logic for tamping vehicles, making it difficult for operators to quickly locate and resolve problems. There is also a lack of analytical tools for complex, non-logical faults, requiring long-term onboard personnel, resulting in long turnaround times and low efficiency. Therefore, developing an onboard intelligent diagnostic and maintenance system for tamping vehicles to improve on-site fault handling efficiency and enhance the level and efficiency of on-site and vehicle operation and maintenance management has become a pressing technical challenge. Summary of the Invention

[0007] In view of this, the purpose of this application is to provide an on-board intelligent diagnosis and operation method for a tamping vehicle to solve the technical problems of the existing diagnosis and operation method, such as complex control logic, inability of operators to quickly locate and handle problems, and lack of analysis methods for complex non-logical faults.

[0008] In order to achieve the above-mentioned invention objectives, the present application specifically provides a technical implementation solution for an on-board intelligent diagnosis and operation and maintenance device for a tamping vehicle, including:

[0009] A method for intelligent on-board diagnosis and maintenance of a tamping vehicle, characterized by comprising an active diagnosis process S1), the process comprising the following steps:

[0010] S11) The vehicle control network system collects key switches and operating actions and determines whether active diagnosis is triggered. Based on the control logic, it determines whether the high-speed running, hydraulic system, working running, tamping system, tamping posture, leveling system, track shifting system and automatic centering systems are working properly;

[0011] S12) If yes, then determine whether the trigger control logic can output normally. If yes, then operate the trigger program to enter the diagnostic process. The diagnostic process determines whether the logic output satisfies the control logic, searches the logic formula for the signal state required to satisfy the logic, and if it is inconsistent with the current signal state, fills the alarm bit in the sent communication protocol;

[0012] S13) The main control module collects the vehicle control network bus data in real time, analyzes the diagnostic alarm bit according to the vehicle model protocol, and if the alarm bit is set, analyzes the alarm bit information, generates alarm information according to the protocol, stores it in the vehicle database, and sends it to the intelligent diagnostic display via Ethernet;

[0013] S14) The intelligent diagnostic display reads and displays the alarm information, searches the fault tree according to the fault code to obtain the cause of the fault and the analysis method, and displays the treatment method.

[0014] Furthermore, the method further includes a logic diagnosis process S2), which includes the following steps:

[0015] S21) The vehicle-mounted control network system collects electrical system data and sends the data to the bus network via the bus;

[0016] S22) The main control module collects vehicle control network bus data in real time, parses the bus communication data according to the protocol, obtains vehicle real-time data, and sends the vehicle real-time data to the intelligent diagnostic display via Ethernet;

[0017] S23) The intelligent diagnostic display reads the real-time vehicle data and forms a real-time vehicle signal table according to the vehicle model data signal table; the intelligent diagnostic display reads the logic configuration file, draws a logic ladder diagram, queries the real-time signal table according to the signal name, and refreshes the ladder diagram signal status display;

[0018] S24) When the user clicks the query logic unsatisfied signal, the fault handling vehicle database is queried to obtain the handling measures and location pictures for display.

[0019] Furthermore, the method further includes an expert diagnosis process S3), which includes the following steps:

[0020] S31) The vehicle-mounted control network system collects electrical system data and sends the data to the bus network via the bus;

[0021] S32) The main control module collects vehicle control network bus data in real time, analyzes the vehicle bus data according to the vehicle model protocol, cyclically stores the vehicle data for a set time, and determines whether there are any abnormalities in the tamping, track shifting, and running systems; if there are any abnormalities, the main control module analyzes the analog waveform characteristics, matches the fault tree according to the characteristics, analyzes the cause of the fault according to the probability of occurrence, stores the cause in the vehicle database, and sends the fault code to the intelligent diagnostic display via Ethernet;

[0022] S33) The intelligent diagnostic display analyzes the fault code, searches the fault tree according to the fault code, and obtains the cause of the fault and the treatment measures;

[0023] S34) The user performs processing according to the given processing measures. After the fault processing is completed, the user fills in the fault processing instructions through the intelligent diagnosis display, recalculates the probability of occurrence of each abnormal cause of the fault tree according to the processing instructions, and updates the fault tree.

[0024] Furthermore, the step S32) includes:

[0025] When the actual insertion depth of the tamping head differs from the set depth by more than a set threshold value during several consecutive tamping operation cycles, it is determined that the tamping head insertion is abnormal.

[0026] Furthermore, the step S32) includes:

[0027] When the shifting cannot be completed in place within several consecutive shifting action cycles and the shifting amount does not reach the set minimum threshold, it is judged as under-shifting abnormality; when the shifting amount exceeds the set maximum threshold, it is judged as over-shifting abnormality.

[0028] Furthermore, the step S32) includes:

[0029] When the track lifting cannot be completed in place within several consecutive pickaxe track lifting action execution cycles and the track lifting amount does not reach the set minimum threshold, it is judged as insufficient track lifting abnormality; when the track lifting amount exceeds the set maximum threshold, it is judged as excessive track lifting abnormality.

[0030] Furthermore, the method further includes a data analysis process S4), which includes the following steps:

[0031] S41) The vehicle-mounted control network system collects electrical system data and sends the data to the bus network via the bus;

[0032] S42) The main control module collects vehicle bus data from the vehicle control network in real time, parses the vehicle bus data according to the vehicle model protocol, stores the vehicle data as a binary file, and splits it according to the set file size;

[0033] S43) The intelligent diagnostic display obtains a list of vehicle type storage files, copies the files to the intelligent diagnostic display, parses the files according to the vehicle type protocol, and stores them in the vehicle database, queries the data columns that need to be analyzed, and generates a data curve chart or data list.

[0034] Furthermore, the method further includes an operation analysis process S5), which includes the following steps:

[0035] S51) The vehicle-mounted control network system collects electrical system data and sends the data to the bus network via the bus;

[0036] S52) The main control module collects vehicle bus data from the vehicle control network in real time, parses the vehicle bus data according to the vehicle model protocol, determines whether the data is operation data including switch, keyboard or user input, and if so, parses the user operation and stores it in the operation log file, which is stored by date;

[0037] S53) The intelligent diagnostic display obtains the operation file list, copies the file to the intelligent diagnostic display, parses the operation data file according to the vehicle model protocol, displays the operation record table including time and operation content, and analyzes whether the operation complies with the formal process according to the operation sequence. If not, the record that does not comply with the process will be marked.

[0038] Furthermore, the method further includes a job data analysis process S6), which includes the following steps:

[0039] S61) The vehicle-mounted control network system collects electrical system data and sends the data to the bus network via the bus;

[0040] S62) The main control module collects vehicle bus data from the vehicle control network in real time, parses the vehicle bus data according to the vehicle model protocol, determines whether the data is operation quality related data, and if so, stores the operation data by date as an operation record file;

[0041] S63) The intelligent diagnostic display obtains a list of operation record files, copies the files to the intelligent diagnostic display, parses the operation data files according to the vehicle model protocol, displays the operation data list and curves, analyzes the comparison effect of the data before and after the operation, and exports the operation report.

[0042] Furthermore, the method further includes a device history management process S7), which includes the following steps:

[0043] S71) The main control module establishes a vehicle-mounted device history database, receives in real time operation commands from the intelligent diagnostic display to add, delete, modify, and query the vehicle-mounted device history table, operates the vehicle-mounted device history table database, and returns the completed data table to the intelligent diagnostic display;

[0044] S72) The intelligent diagnostic display provides a human-computer interaction interface, displays operations for adding, deleting, modifying, and querying the vehicle-mounted device history table, and exports the vehicle-mounted device history table.

[0045] Furthermore, the method also includes an equipment maintenance management process S8), which includes the following steps:

[0046] S81) The main control module establishes a maintenance history database for key on-board equipment, and receives in real time operation commands from the intelligent diagnostic display for adding, deleting, modifying, and querying maintenance operations for key on-board equipment, operates the maintenance history database for key on-board equipment, and returns a completed data table to the intelligent diagnostic display;

[0047] S82) The intelligent diagnostic display provides a human-computer interaction interface, displays the operations of adding, deleting, modifying, and querying the maintenance history of the vehicle-mounted key equipment, and determines whether the date of the next maintenance is lower than the set time. If so, it prompts maintenance and exports the maintenance history of the vehicle-mounted key equipment. If not, it directly exports the maintenance history of the vehicle-mounted key equipment.

[0048] Furthermore, the method further includes an equipment failure management process S9), which includes the following steps:

[0049] S91) The main control module establishes a vehicle-mounted equipment fault history database, receives in real time operation commands from the intelligent diagnostic display to add, delete, modify, and query the vehicle-mounted equipment fault history table, operates the vehicle-mounted equipment fault history table database, and returns a completed data table to the intelligent diagnostic display;

[0050] S92) The intelligent diagnostic display provides a human-computer interaction interface, displays operations for adding, deleting, modifying, and querying the vehicle-mounted equipment fault history table, and exports the vehicle-mounted equipment fault history table.

[0051] Furthermore, the method further includes a device operation record management process S10), which includes the following steps:

[0052] S101) The vehicle-mounted control network system collects electrical system data and sends the data to the bus network via the bus;

[0053] S102) The main control module establishes an operation record table database, collects vehicle control network bus data in real time, and parses the vehicle bus data according to the vehicle model protocol; when it is determined that the vehicle network power is powered on, it begins to count key cumulative quantities including mileage, time, and tamping times, and stores the operation record in the database after detecting the network power off signal;

[0054] S103) The intelligent diagnostic display provides a human-computer interaction interface for vehicle operation record database query operations, and returns a vehicle operation record list for display.

[0055] By implementing the technical solution of the on-board intelligent diagnosis and operation and maintenance method for tamping vehicles provided by the present application, the following beneficial effects are achieved:

[0056] (1) The on-board intelligent diagnostic operation and maintenance method for tamping vehicles of this application has simple control logic, allowing operators to quickly locate and handle problems, with short maintenance cycles and high efficiency, which can improve the efficiency of on-site fault handling and enhance the level and efficiency of on-site and vehicle operation and maintenance management;

[0057] (2) The on-board intelligent diagnostic operation and maintenance method of the tamping vehicle of this application can quickly locate the logic problem through the tamping vehicle's "active diagnosis" + "logic diagnosis", and provide treatment measures and location screenshots, which can quickly locate and solve the electrical system logic fault;

[0058] (3) The on-board intelligent diagnosis and operation and maintenance method of the tamping vehicle of this application, through the "expert diagnosis" positioning of the tamping vehicle, through real-time monitoring of key analog quantities and sensor signals, long-term trend analysis, and combined with the on-board control logic, analyzes and solves difficult problems that cannot be covered by active diagnosis and logical diagnosis;

[0059] (4) The on-board intelligent diagnosis and operation and maintenance method of the tamping vehicle of this application can quickly locate abnormalities in on-board control data and operation through the tamping vehicle's "on-board data analysis" and "operation data analysis", assist in analyzing difficult faults, and provide expert analysis results to help non-professionals deal with difficult faults;

[0060] (5) The present application provides an on-board intelligent diagnosis and operation and maintenance method for tamping vehicles, which realizes the management of daily forms such as vehicle maintenance and fault history on the vehicle side, thus simplifying the on-site operation and maintenance management process; automatically counts operation and driving information through the on-board recording module, and inputs on-board equipment, maintenance, fault records and other content through smart displays or tablets, thus realizing electronic and intelligent management of operation and maintenance, which can greatly improve the level of on-board operation and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] To more clearly illustrate the embodiments of the present application 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 only some embodiments of the present application. For those skilled in the art, other embodiments can be derived from these drawings without inventive effort.

[0062] Figure 1 This is a system structure block diagram of a specific embodiment of the on-board intelligent diagnosis and operation and maintenance device for tamping vehicles based on the method of this application;

[0063] Figure 2 This is a schematic block diagram of the system structure of a specific embodiment of the on-board intelligent diagnosis and operation system for tamping vehicles based on the method of this application;

[0064] Figure 3 This is a flowchart for realizing the active diagnosis function of a specific embodiment of the on-board intelligent diagnosis and maintenance method for a tamping vehicle of the present application;

[0065] Figure 4 This is a flowchart for realizing the logic diagnosis function of a specific embodiment of the on-board intelligent diagnosis and maintenance method for tamping vehicles of the present application;

[0066] Figure 5 This is a schematic diagram of the logic diagnosis function interface of a specific embodiment of the on-board intelligent diagnosis and operation method of a tamping vehicle of the present application;

[0067] Figure 6 This is a structural block diagram of the expert diagnosis function of a specific embodiment of the on-board intelligent diagnosis and maintenance system for tamping vehicles based on the method of this application;

[0068] Figure 7 This is a flowchart for realizing the expert diagnosis function of a specific embodiment of the on-board intelligent diagnosis and maintenance method for a tamping vehicle of the present application;

[0069] Figure 8 This is a schematic diagram of a curve showing that the output current is normal when diagnosed by an expert in a specific embodiment of the on-board intelligent diagnosis and maintenance method for a tamping vehicle of the present application;

[0070] Figure 9 This is a schematic diagram of a theoretical curve of expert diagnosis of track shifting current in a specific embodiment of the on-board intelligent diagnosis and maintenance method for a tamping vehicle of the present application;

[0071] Figure 10 This is a schematic diagram of a theoretical curve of expert diagnosis of track-starting current in a specific embodiment of the on-board intelligent diagnosis and maintenance method for a tamping vehicle of the present application;

[0072] Figure 11 This is a structural block diagram of the data analysis function of a specific embodiment of the on-board intelligent diagnosis and operation system for tamping vehicles based on the method of this application;

[0073] Figure 12 This is a flowchart for realizing the data analysis function of a specific embodiment of the on-board intelligent diagnosis and operation method of the tamping vehicle of the present application;

[0074] Figure 13 This is a block diagram of the operation analysis function of a specific embodiment of the on-board intelligent diagnosis and operation and maintenance system for tamping vehicles based on the method of this application;

[0075] Figure 14 This is a flowchart for realizing the operation analysis function of a specific embodiment of the on-board intelligent diagnosis and operation and maintenance method for a tamping vehicle of the present application;

[0076] Figure 15 This is a functional block diagram of the operation data analysis of a specific embodiment of the on-board intelligent diagnosis and operation system for tamping vehicles based on the present application method;

[0077] Figure 16This is a flowchart for realizing the operation data analysis function of a specific embodiment of the on-board intelligent diagnosis and maintenance method for a tamping vehicle of the present application;

[0078] Figure 17 This is a functional block diagram of the equipment history management of a specific embodiment of the vehicle-mounted intelligent diagnosis and operation system based on which the present invention is based;

[0079] Figure 18 This is a flowchart for realizing the equipment history management function of a specific embodiment of the on-board intelligent diagnosis and operation and maintenance method for a tamping vehicle of the present application;

[0080] Figure 19 This is a functional block diagram of equipment maintenance and management in a specific embodiment of the on-board intelligent diagnosis and operation system for tamping vehicles on which the present application method is based;

[0081] Figure 20 This is a flowchart for realizing the equipment maintenance and management function of a specific embodiment of the on-board intelligent diagnosis and operation method of a tamping vehicle of the present application;

[0082] Figure 21 This is a functional block diagram of the fault history management of a specific embodiment of the on-board intelligent diagnosis and maintenance system for tamping vehicles on which the present application method is based;

[0083] Figure 22 This is a flowchart for realizing the fault history management function of a specific embodiment of the on-board intelligent diagnosis and operation method of the tamping vehicle of the present application;

[0084] Figure 23 This is a functional block diagram of the equipment operation record management of a specific embodiment of the on-board intelligent diagnosis and maintenance system for tamping vehicles based on the present application method;

[0085] Figure 24 This is a flowchart for realizing the equipment operation record management function of a specific embodiment of the on-board intelligent diagnosis and operation and maintenance method of the tamping vehicle of the present application. DETAILED DESCRIPTION

[0086] For the purpose of reference and clarity, the technical terms, abbreviations or abbreviations used below are recorded as follows:

[0087] CAN: Short for Controller Area Network;

[0088] MCM: short for Main Control Module;

[0089] C / S: Abbreviation for Client / Server, which refers to the client / server architecture model. In this architecture, the server is responsible for managing the database, processing data requests, and providing business logic processing services, while the client is responsible for interacting with the user, sending user requests to the server, and displaying the server's returned results.

[0090] To make the purpose, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0091] As attached Figure 1 To the attached Figure 24 As shown, a specific embodiment of the on-board intelligent diagnosis and operation and maintenance method of the tamping vehicle of the present application is given. The present application is further explained below in conjunction with the drawings and specific embodiments.

[0092] Example 1

[0093] As attached Figure 1 As shown, an embodiment of an on-board intelligent diagnostic operation and maintenance device for a tamping vehicle based on the method of the present application specifically includes:

[0094] The main control module (MCM module) serves as an on-board server, collecting and recording bus (such as CAN bus) data and saving it as files. It mainly implements logical functions including active diagnosis, logical diagnosis, expert diagnosis, operation data recording and analysis, and job data recording and analysis. It is also equipped with an on-board database (such as MySQL database) to store and manage data operation and maintenance information including basic vehicle information, equipment information, maintenance information, fault records, and operation records. The core on-board intelligent diagnosis and operation and maintenance server software runs in the main control module. It is a C / S embedded server program that runs core service functions and manages the on-board database.

[0095] The mobile routing module (vehicle-mounted wireless AP) is connected to the main control module and enables network access to vehicle-mounted devices through the vehicle-mounted wireless network. When the vehicle-mounted public network opens access rights, the main control module and the intelligent diagnostic display establish a connection with the remote diagnostic system through the mobile routing module to achieve real-time remote monitoring, diagnosis and data synchronization on the vehicle.

[0096] The intelligent diagnostic display or mobile tablet realizes Ethernet wired or wireless connection with the main control module through the mobile routing module, and is used to receive intelligent diagnostic data sent by the main control module to realize active diagnosis, logical diagnosis, expert diagnosis, operation data record analysis, and job data record analysis human-computer interaction. It is used to access the vehicle-mounted database of the main control module to realize human-computer interaction of operation and maintenance management. The intelligent diagnostic display or mobile tablet runs client interaction software, which accesses the main control module through the wireless LAN to realize human-machine interface access. When the intelligent diagnostic display or mobile tablet does not have access rights to the on-board public network, it can realize offline collection of data files and upload them to the remote diagnostic system. The intelligent diagnostic display is used to intelligently diagnose faults in the entire vehicle control system, intelligently monitor the life cycle of each module of the vehicle control network system, and realize voice broadcast function.

[0097] Example 2

[0098] As attached Figure 2 As shown, an embodiment of an on-board intelligent diagnosis and operation and maintenance system for a tamping vehicle based on the method of the present application specifically includes: an on-board network control system, a remote diagnosis system, and the device described in Example 1. The on-board network control system is connected to the main control module of the on-board intelligent diagnosis and operation and maintenance device, and the main control module and the intelligent diagnosis display establish a wireless connection with the remote diagnosis system via a mobile routing module.

[0099] Active diagnosis determines whether system components such as high-speed travel, hydraulic system, operating travel, tamping system, tamping posture, leveling system, and track shifting system are working properly based on the control logic. When the user wants to perform a certain operation (such as triggering the pedal to step on the tamping), the system locates the reason for the failure to insert and prompts the user, helping the user quickly troubleshoot common system logic faults. It mainly realizes the following functions:

[0100] User-executed operations: The trigger condition is determined by the user-executed operations;

[0101] Active diagnosis: This includes high-speed running diagnosis, working running diagnosis, tamping system diagnosis, track shifting system diagnosis, leveling system diagnosis, automatic centering diagnosis and other major system function diagnosis. If a fault is diagnosed, the fault code will be sent to the (on-board) intelligent diagnostic display;

[0102] Fault code analysis: The intelligent diagnostic display analyzes the fault code to determine the cause of the fault, fault phenomenon, and fault handling measures;

[0103] Fault push: Push fault information to users for viewing.

[0104] The on-board control network system collects key switches and operating actions, and determines whether to trigger active diagnosis. According to the control logic, it determines whether the systems including high-speed running, hydraulic system, operation running, tamping system, tamping posture, leveling system, track shifting system and automatic centering are working normally. If so, it determines whether the trigger control logic can output normally. If so, the operation triggers the program to enter the diagnostic process. The diagnostic process determines whether the logic output is satisfied according to the control logic, and searches for the signal state required to satisfy the logic in the logic formula. If it is inconsistent with the current signal state, the alarm bit is filled in the sent communication protocol.

[0105] The onboard control network system program implements key switches and operation acquisition (such as the direction switch and tamping head lowering). These operations trigger the program to enter the diagnostic process, which determines whether the logical output is satisfied based on the control logic. Taking the lowering of the left tamping device as an example, the following logic equation is used to find the signal state required to satisfy the logic. If the current signal state is inconsistent, an alarm is issued.

[0106] Left tamping device down = [(40^41v0F)^11^45^B1^12^72^4C]v(12^B0^46^4C)

[0107] Among them, the signal is expressed as follows: according to the real-time signal table, if the result of the logical expression is 1, the logic is satisfied. The program automatically determines whether the signal that satisfies the logical expression needs to be 0 or 1, and issues an alarm; ^ = AND, v = OR.

[0108] 40: Automatic tamping cycle 1×

[0109] 41: Automatic tamping cycle 2×

[0110] 0F: Automatic cycle

[0111] 11: Only clearing the road without tamping

[0112] 45: Operation Mode-Main Line

[0113] B1: Right lowering pedal

[0114] 12: Tamping device allows insertion

[0115] 72: Job stopped

[0116] 4C: Use only the right tamping device

[0117] 12: Tamping device allows insertion

[0118] B0: Left descending pedal

[0119] 46: Operation Mode - Turnout

[0120] Right starting point limit = 3E^57^6E^AB

[0121] The above formula represents the limit of the right path

[0122] 3E: Leveling the string and tightening it

[0123] 57: Right start limit

[0124] 6E: Long sleeper on the right

[0125] AB: Manual start from the right

[0126] When the user wants to perform a certain operation (such as tamping down to trigger the pedal to step on the action), the reason why the insertion cannot be done is located and prompted to the user, helping the user to quickly troubleshoot common system logic faults. The main control module collects the vehicle control network bus data in real time, and parses the diagnostic alarm bit according to the vehicle model protocol. If the alarm bit is set (such as set to 1), the alarm bit information is parsed, and the alarm information (fault code, alarm name, level, and system to which it belongs) is generated according to the protocol, stored in the vehicle database, and sent to the intelligent diagnostic display via Ethernet. The intelligent diagnostic display parses the fault code, reads and displays the alarm information, queries the fault tree according to the fault code to obtain the cause of the fault and the analysis method, and displays the processing method. Push the fault information to the user for viewing.

[0127] Logical diagnosis function is realized according to the network control logic of vehicle intelligent diagnosis and maintenance system, as shown in the attached Figure 5 As shown, it is intuitively displayed in the human-computer interaction system in the form of a logic ladder diagram, showing whether the signal in the logic is satisfied, making it easy to check the logical reason why the module has no output; for each signal that is not satisfied, the treatment measures and location screenshots are given to facilitate users to quickly troubleshoot and solve the problem. It mainly realizes the following functions:

[0128] Information collection and calculation: The vehicle control network system collects electrical system signals and sends CAN data to the control network;

[0129] Logic ladder diagram drawing: draw logic ladder diagram on the vehicle display to intuitively show various logic display modes;

[0130] Logic signal status display: Display logic status in ladder diagram according to real-time signal;

[0131] Fault push: Push fault cause, treatment measures, signal location and other information to users for processing.

[0132] The vehicle control network system collects electrical system data and transmits it to the bus network via a bus (such as the CAN bus). A logic ladder diagram is drawn on the intelligent diagnostic display, visually displaying various logic display modes. The ladder diagram displays the logic status based on real-time signals, and provides information such as the cause of the fault, treatment measures, and signal location to the user. The main control module collects real-time data from the vehicle control network bus, parses the bus communication data according to the protocol, and obtains real-time vehicle data. This data is then transmitted to the intelligent diagnostic display via Ethernet. The intelligent diagnostic display reads the real-time vehicle data and, based on the vehicle model data signal table, creates a real-time vehicle signal table containing signal name, signal type, signal code, and signal value. The intelligent diagnostic display reads the logic configuration file, draws a logic ladder diagram, queries the real-time signal table based on the signal name, and refreshes the ladder diagram signal status display. When the user clicks on a signal that the logic does not meet the query logic, the on-board fault handling database is queried, and the treatment measures and location images are displayed.

[0133] The expert diagnosis function implements data analysis based on sensor change trends and key analog quantity change trends. Based on the vehicle logic and data change trends, combined with expert experience, it generates a fault tree as shown in Table 1 below. It diagnoses difficult problems such as non-logical faults and pushes possible causes to the intelligent diagnosis display for prompt processing. It mainly realizes the following functions:

[0134] Information collection and calculation: The vehicle control network system collects electrical system signals and sends CAN data to the control network;

[0135] Initialize the fault tree: Initialize the fault tree, analyze the possible causes of difficult faults, provide treatment measures for possible causes, and give the initial fault probability based on experience.

[0136] Data analysis: During five consecutive tamping and insertion cycles, the difference between the actual insertion depth of the tamping head and the set depth was greater than the threshold.

[0137] Fault judgment: determine whether the tamping and insertion parameters are within the threshold range; analyze and judge the trend of the output current and feedback current curves.

[0138] Cause analysis: Combine the fault tree to give possible causes, query the treatment measures, and submit them to the display for prompts.

[0139] Probability correction: After the problem is resolved, fill in the fault history table and the system will automatically correct the fault probability based on the cause.

[0140]

[0141]

[0142] Table 1 Fault tree list

[0143] As attached Figure 6 As shown, the vehicle control network system collects electrical system data and sends the data to the bus network via the bus. The main control module collects vehicle control network bus data in real time, parses the vehicle bus data according to the vehicle model protocol, cyclically stores the vehicle data for a set time, and determines whether there are any abnormalities in the tamping, track starting and running systems. If there are abnormalities, the analog waveform characteristics are analyzed, and the fault tree is matched based on the characteristics. The cause of the fault is analyzed based on the probability of occurrence and stored in the vehicle database, and the fault code is sent to the intelligent diagnostic display via Ethernet. The intelligent diagnostic display reads the alarm information, parses the fault code, queries the fault tree based on the fault code, obtains the cause of the fault and the analysis method, and displays the treatment measures. The user handles the fault according to the given treatment measures. After the fault is handled, the intelligent diagnostic display fills in whether the abnormality has been handled, the actual cause of the abnormality, and the fault handling instructions. The probability of occurrence of each abnormality cause in the fault tree is recalculated based on the handling instructions, and the fault tree is updated.

[0144] Taking the fault diagnosis of abnormal tamping head insertion as an example, a fault tree is initialized, the possible causes of the difficult fault are analyzed, possible solutions are provided, and an initial fault probability is calculated based on experience. During five consecutive tamping and insertion cycles, the actual tamping head insertion depth differs from the set depth by more than a threshold. The tamping and insertion parameters are determined to be within the threshold range. The output current and feedback current curve trends are analyzed and judged. Based on the fault tree, a possible cause is determined, and solutions are queried. This information is then sent to the intelligent diagnostic display for prompting. After the problem is resolved, a fault history table is filled in, and the system automatically adjusts the fault probability based on the cause. The main control module server software collects real-time CAN data from the vehicle control network, parses the vehicle CAN data using a protocol, and uses Redis to store a 10-minute linked list of vehicle data in a loop. The system determines whether any abnormalities exist based on the voltage analog trends of the tamping and track shifting systems. If an abnormality is present, the current curve is analyzed and the most likely cause is diagnosed based on the fault tree probability. This data is stored in a database and sent to the intelligent diagnostic display via Ethernet.

[0145] When the actual depth of the tamping head differs from the set depth by more than a set threshold (such as 5mm) for several consecutive tamping operation cycles (such as 500ms), it is determined that the tamping head is abnormal. Figure 8 As shown, based on the actual insertion current and depth fitting curve, determine whether the difference compared with the theoretical curve is too large, and diagnose the cause of the fault according to the following principles.

[0146] 1) Abnormal valve output / abnormal module output -> Is the output current and feedback current in a linear relationship?

[0147] 2) Hydraulic system abnormality -> Is the time for the tamping head to quickly insert into the roadbed less than the set time?

[0148] 3) Abnormal line compaction -> Can the output current of the tamping head return to 0 within the set time when it is under the track bed?

[0149] When the shifting action of several consecutive picks (such as 5 picks) fails to be executed in place and the shifting amount does not reach the set minimum threshold (such as 0.3mm), it is judged as under-shifting abnormality. When the shifting amount exceeds the set maximum threshold (such as 0.3mm), it is judged as over-shifting abnormality. Figure 9 As shown, based on the fitting curve of actual shifting current and shifting amount, determine whether the difference is too large compared with the theoretical curve, and diagnose the cause of the fault according to the following principles.

[0150] 1) The clamping time is too short -> the time from the start to the end of the shifting action is less than the threshold (100ms);

[0151] 2) Abnormal valve output / abnormal module output / abnormal AI acquisition -> The difference between the given current and the feedback current is greater than the threshold (1mA); there is given current but no feedback current;

[0152] 3) Electrical zero offset -> No given current, feedback current greater than (1mA);

[0153] 4) Hydraulic system abnormality / sensor abnormality -> There is a given current, a feedback current, and no change in the (100ms) shifting verse sensor;

[0154] 5) Servo valve mechanical zero offset -> no given current, no feedback current, and the sine sensor changes.

[0155] When the track lifting cannot be completed in place during the execution cycle of several consecutive pickaxes (such as 5 pickaxes) and the track lifting amount does not reach the set minimum threshold (such as 0.3mm), it is determined to be an under-track lifting abnormality. When the track lifting amount exceeds the set maximum threshold (such as 0.3mm), it is determined to be an over-track lifting abnormality. Figure 10 As shown, based on the fitting curve of actual starting current and starting quantity, determine whether the difference is too large compared with the theoretical curve, and diagnose the cause of the fault according to the following principles.

[0156] 1) The clamping time is too short -> the time from the start to the end of the track movement is less than the threshold (100ms);

[0157] 2) Abnormal valve output / abnormal module output / abnormal AI acquisition -> The difference between the given current and the feedback current is greater than the threshold (1mA); there is given current but no feedback current;

[0158] 3) Electrical zero offset -> No given current, feedback current greater than (1mA);

[0159] 4) Hydraulic system abnormality / sensor abnormality -> There is a given current, a feedback current, and no change in the leveling sensor (100ms);

[0160] 5) Servo valve mechanical zero offset -> no given current, no feedback current, and the leveling sensor changes.

[0161] Data analysis is used by professionals and managers to analyze field data, providing data support and tools for difficult-to-analyze problems or optimize operations. It enables dynamic monitoring of real-time data curve changes in onboard data lists; displays data using dynamic curves or lists; and performs statistical analysis of data trends and alarms for abnormal information.

[0162] Signal acquisition and calculation: The vehicle control network system collects electrical system signals and sends CAN data to the control network;

[0163] Data recording and file storage: The vehicle main control module records all CAN data and stores it as a binary file;

[0164] Data parsing: The on-board display parses the file according to the file format;

[0165] Data analysis: rapid screening, marking, and prompting of outliers; screening, marking, and prompting of threshold ranges; monitoring and calculation of data communication cycles; monitoring, marking, and prompting of data mutations.

[0166] As attached Figure 11 As shown, the vehicle control network system collects electrical system data and transmits it to the bus network via the bus. The main control module collects vehicle bus data from the vehicle control network in real time, parses the data according to the vehicle model protocol, stores the vehicle data as a binary file, and segments it according to a set file size (e.g., 200MB). The intelligent diagnostic display obtains the CAN vehicle model storage file list, copies the file to the intelligent diagnostic display, parses the file according to the vehicle model protocol, and stores it in the vehicle database. It then queries the data columns to be analyzed, generates data graphs or data lists, and performs data analysis (rapidly screening, marking, and prompting of outliers; screening, marking, and prompting of threshold ranges; monitoring and calculating data communication cycles; and monitoring, marking, and prompting of data mutations).

[0167] Operational analysis is used by professionals and managers to analyze on-site data, providing data support for difficult-to-analyze issues or optimizing operations and travel operations. It enables time-sharing playback of onboard operation records, including key onboard switch operations, key soft keyboard operations on the display, key keyboard operations on the hard keyboard, and module parameter modifications. It analyzes operational and travel operation processes to determine whether they comply with operational specifications. Any violations of normal operational procedures are marked and prompted, and displayed on the (on-board) intelligent diagnostic display / mobile tablet. It primarily implements the following functions:

[0168] Operation data collection: The vehicle control network system collects vehicle operations, such as buttons, switches, accelerators, etc., and sends CAN data to the control network;

[0169] Data recording and file storage: The vehicle main control module records all CAN data and stores it as an operation data record binary file;

[0170] Data parsing: The on-board display parses the operating data file according to the file format;

[0171] Operation playback: playback vehicle operations in timeline order;

[0172] Operational analysis: Analyze whether the operation complies with the formal operating procedures and mark the records that do not comply with the procedures.

[0173] As attached Figure 13 As shown, the vehicle control network system collects electrical system data (such as buttons, switches, accelerators, etc.) and sends the data to the bus network through the bus. The main control module collects vehicle bus data from the vehicle control network in real time, parses the vehicle bus data according to the vehicle model protocol, and determines whether the data is operation data including switches, keyboards or user input. If so, it parses the user operation and stores it in the operation record file. The operation record file is stored by date. The intelligent diagnostic display obtains the operation file list, copies the file to the intelligent diagnostic display, parses the operation data file according to the vehicle model protocol, displays the operation record table including time and operation content, and analyzes whether the operation complies with the formal process based on the operation sequence. If not, the record that does not comply with the process will be marked.

[0174] Operation data analysis is used to analyze operation data, provide reference for operation quality judgment, analyze operation data, compare them in curve form, and display the operation status of track raising, track shifting, and tamping. It mainly realizes the following functions:

[0175] Export analysis reports: operation time, operation distance, number of operation picks, maximum difference of trend curve, minimum difference of trend curve, average difference of trend curve.

[0176] Operation data collection: The vehicle control network system collects operation data, such as front, middle and rear swing values, computer theoretical values, etc., and sends CAN data to the vehicle control network;

[0177] Data recording and file storage: The main control module records the operation CAN data and stores it as an operation data record binary file;

[0178] Data parsing: The intelligent diagnostic display parses the job data file according to the file format;

[0179] Job data playback: playback job data operations in time sequence to generate curves;

[0180] Operation data analysis: comparative analysis of the trend curves of the rear swing and front swing values ​​at the same operation point (mileage position); comparative analysis of the trend curves of the rear swing and the rear theoretical superelevation; comparative analysis of the trend curves of the recorded positron sensor and the recorded theoretical positron; comparative analysis of the trend curves of the set depth and the actual tamping depth.

[0181] As attached Figure 15 As shown, the vehicle control network system collects electrical system data and sends the data to the bus network through a bus (such as CAN). The main control module collects vehicle bus data from the vehicle control network in real time, parses the vehicle bus data according to the vehicle model protocol, and determines whether the data is related to the operation quality. If so, the operation data is stored as an operation record file by date. The intelligent diagnostic display obtains the list of operation record files and displays the operation quality data table. The operation quality data is shown in Table 2 below. The file is copied to the intelligent diagnostic display. After parsing the operation data file according to the vehicle model protocol, the operation data list and curve are displayed, and the comparison effect of the data before and after the operation is analyzed, and the operation report is exported. Analysis is performed based on the data (comparison and analysis of the trend curves of the rear swing and front swing values ​​at the same operation point (mileage position); comparison and analysis of the trend curves of the rear swing and the rear theoretical superelevation; comparison and analysis of the trend curves of the recorded sine sensor and the recorded theoretical sine sensor; comparison and analysis of the trend curves of the set depth and the actual tamping depth).

[0182]

[0183]

[0184] Table 2 List of key analog quantities for operations

[0185] Equipment history management realizes the maintenance and management of the history table of key vehicle equipment, and realizes the addition, deletion, modification and query of data tables, as well as query statistics. It mainly realizes the following functions:

[0186] Vehicle-mounted equipment database management: Establish a vehicle-mounted database in the main control module to manage the operation and maintenance data of vehicle-mounted equipment;

[0187] Add vehicle-mounted equipment information: Add vehicle-mounted equipment information by importing or entering;

[0188] Vehicle-mounted equipment information modification: query vehicle-mounted equipment information and modify entry information;

[0189] Deleting vehicle-mounted device information: querying vehicle-mounted device information and deleting entry information;

[0190] Vehicle-mounted equipment information query: Query vehicle-mounted equipment information by device and export reports as needed.

[0191] As attached Figure 17As shown, the main control module uses MySQL to establish a vehicle device history database. It receives real-time commands from the intelligent diagnostic display to add, delete, modify, and query the vehicle device history table shown in Table 3 below. It then operates the vehicle device database and returns the completed data table to the intelligent diagnostic display. The intelligent diagnostic display provides a human-computer interaction interface, displaying operations such as add, delete, modify, and query on the vehicle device history table. It then returns the requested data and execution results, and exports the vehicle device history table.

[0192] Serial number Column Name type illustrate Remark 1 Unique ID Integer Database ID, auto-increment 2 Equipment Number Integer Record device number 3 Device Name String Record device name 4 Equipment activation date Boolean Record the equipment startup date 5 Equipment maintenance date date Record the date of the equipment's most recent maintenance 6 Is the device enabled? Boolean Enable / Disable 7 Responsible person String Recording Equipment Responsible Person

[0193] Table 3 Vehicle Equipment History

[0194] Equipment maintenance management realizes the maintenance and management of the maintenance forms of key on-board equipment, mainly realizing the following data table addition, deletion, modification, query and statistics functions.

[0195] On-board maintenance database management: Establish an on-board database in the main control module to manage on-board maintenance information and operation data;

[0196] Add vehicle maintenance information: Add vehicle maintenance information by importing or entering;

[0197] Vehicle maintenance information modification: query vehicle maintenance information and modify entry information;

[0198] Vehicle maintenance information deletion: query vehicle maintenance information and delete entry information;

[0199] Vehicle maintenance information query: query vehicle maintenance information by equipment and export reports as needed;

[0200] Maintenance reminder: remind you of the maintenance date for regular maintenance.

[0201] As attached Figure 19 As shown in Table 4 below, the main control module uses MySQL to establish a database of vehicle-mounted key equipment maintenance records. It then receives real-time commands from the intelligent diagnostic display to add, delete, modify, and query key equipment maintenance records, operates the database, and returns a completed data table to the intelligent diagnostic display. The intelligent diagnostic display provides a human-computer interaction interface, displaying operations such as adding, deleting, modifying, and querying key equipment maintenance records. It also determines whether the next maintenance date is below the set time. If so, it prompts maintenance and exports the vehicle-mounted key equipment maintenance records. If not, it directly exports the vehicle-mounted key equipment maintenance records.

[0202] Serial number Column Name type Remark 1 Unique ID Integer 2 Equipment Number String 3 Maintenance type String Daily maintenance and repair 4 Spare parts consumption String 5 This maintenance date date 6 Next maintenance date date 7 Maintenance reminder Boolean 8 picture String 9 Responsible person String

[0203] Table 4 Maintenance history of key vehicle equipment

[0204] Equipment fault management realizes the maintenance and management of vehicle-mounted fault handling history tables, and realizes data table addition, deletion, modification, query and statistics, which is used for the following functions such as on-site fault recording and fault collection.

[0205] Vehicle fault database management: Establish a vehicle database in the main control module to manage vehicle fault history and operation and maintenance data;

[0206] Add vehicle fault information: Add vehicle fault information by importing or entering;

[0207] Vehicle fault information modification: query vehicle fault information and modify entry information;

[0208] Deletion of vehicle fault information: query vehicle fault information and delete entry information;

[0209] Vehicle fault information query: statistics on the number of faults by time period and by fault category; generate fault reports based on the statistical results.

[0210] As attached Figure 21 As shown in Table 5 below, the main control module uses MySQL to establish a vehicle equipment fault history database. The main control module receives real-time commands from the intelligent diagnostic display to add, delete, modify, and query the vehicle equipment fault history table, operates the vehicle equipment fault history table database, and returns the completed data table to the intelligent diagnostic display. The intelligent diagnostic display provides a human-computer interaction interface, displays operations such as adding, deleting, modifying, and querying the vehicle equipment fault history table, and exports the vehicle equipment fault history table.

[0211] Serial number Column Name type Remark 1 Unique ID Integer 2 Failure time date 3 Fault phenomenon String Daily maintenance and repair 4 Cause of failure String 5 Fault diagram String 6 Troubleshooting time date 7 Troubleshooting String 8 Material consumption String 10 Handler String

[0212] Table 5 Vehicle equipment failure history

[0213] Equipment operation record management realizes the maintenance and management of vehicle operation record forms, and realizes the following data table addition, deletion, modification, query and statistics functions.

[0214] Operation data collection: The vehicle-mounted control network system collects operation data, such as mileage, operation mileage, operation time, tamping times, etc., and sends CAN data to the vehicle-mounted control network;

[0215] On-board operation data calculation: through the network delay relay, the network power is turned off, and the difference between the operating mileage and driving mileage and the last time is determined, and any changes are automatically recorded;

[0216] On-board operation database management: Establish an on-board database in the main control module to manage the operation and maintenance data of on-board equipment;

[0217] Vehicle operation information query and statistics: operation record statistics by time, and export reports as needed;

[0218] Vehicle operation information query and correction: Manual correction of automatically counted data with errors.

[0219] As attached Figure 23 As shown in the figure, the vehicle control network system collects electrical system data and transmits it to the bus network via the bus. The main control module uses MySQL to establish the (vehicle) operation record database shown in Table 6 below. This database collects vehicle control network bus data in real time and parses the vehicle bus data according to the vehicle model protocol. When the vehicle network power is turned on, key cumulative quantities, including mileage, time, and tamping times, are counted until the network power-off signal is detected. The operation record is then stored in the database. The intelligent diagnostic display provides a human-computer interface for querying the vehicle operation record database and returns a list of vehicle operation records for display.

[0220] Serial number Column Name type Remark 1 Unique ID Integer 2 Record time date 3 Driving mileage Integer 4 Operating mileage Integer 5 Tamping times Integer 6 Engine running time Integer 7 Responsible person String

[0221] Table 6 Vehicle operation record

[0222] Example 3

[0223] This embodiment describes an on-board intelligent diagnostic and maintenance method for tamping vehicles. The main control module collects and records bus data and saves it as files, implementing logical functions including active diagnosis, logical diagnosis, expert diagnosis, operation data recording and analysis, and job data recording and analysis. It also stores and manages data operations and maintenance information, including basic vehicle information, equipment information, maintenance information, fault records, and operation records. A mobile routing module is connected to the main control module, enabling network access to on-board devices via on-board wireless networking. When access is granted to the on-board public network, the main control module and intelligent diagnostic display establish a connection with the remote diagnostic system through the mobile routing module to enable real-time on-board remote monitoring, diagnosis, and data synchronization. The intelligent diagnostic display or mobile tablet establishes an Ethernet wired or wireless connection with the main control module through the mobile routing module, receiving intelligent diagnostic data sent by the main control module and implementing human-computer interaction for active diagnosis, logical diagnosis, expert diagnosis, operation data recording and analysis, and job data recording and analysis. The intelligent diagnostic display or mobile tablet accesses the main control module's on-board database, enabling human-computer interaction for operation and maintenance management. The intelligent diagnostic display or mobile tablet runs client interactive software, which accesses the main control module via wireless LAN, enabling human-machine interface access. When the intelligent diagnostic display or mobile tablet lacks access to the vehicle's public network, it can upload offline collected data files to the remote diagnostic system.

[0224] As attached Figure 3 As shown, an embodiment of the on-board intelligent diagnosis and operation method of a tamping vehicle of the present application includes an active diagnosis process S1), which specifically includes the following steps:

[0225] S11) The vehicle control network system collects key switches and operating actions and determines whether active diagnosis is triggered. Based on the control logic, it determines whether the high-speed running, hydraulic system, working running, tamping system, tamping posture, leveling system, track shifting system and automatic centering systems are working properly;

[0226] S12) If yes, then determine whether the trigger control logic can output normally. If yes, then operate the trigger program to enter the diagnostic process. The diagnostic process determines whether the logic output satisfies the control logic, searches the logic formula for the signal state required to satisfy the logic, and if it is inconsistent with the current signal state, fills the alarm bit in the sent communication protocol;

[0227] S13) The main control module collects the vehicle control network bus data in real time, analyzes the diagnostic alarm bit according to the vehicle model protocol, and if the alarm bit is set, analyzes the alarm bit information, generates alarm information according to the protocol, stores it in the vehicle database, and sends it to the intelligent diagnostic display via Ethernet;

[0228] S14) The intelligent diagnostic display reads and displays the alarm information, searches the fault tree according to the fault code to obtain the cause of the fault and the analysis method, and displays the treatment method.

[0229] As attached Figure 4 As shown, the on-board intelligent diagnosis and operation and maintenance method for a tamping vehicle further includes a logic diagnosis process S2), which includes the following steps:

[0230] S21) The vehicle-mounted control network system collects electrical system data and sends the data to the bus network via the bus;

[0231] S22) The main control module collects the vehicle control network bus data in real time, analyzes the bus communication data according to the protocol, obtains the vehicle real-time data, and sends the vehicle real-time data to the intelligent diagnostic display via Ethernet;

[0232] S23) The intelligent diagnostic display reads the real-time vehicle data and forms a real-time vehicle signal table based on the vehicle model data signal table; the intelligent diagnostic display reads the logic configuration file, draws a logic ladder diagram, queries the real-time signal table based on the signal name, and refreshes the ladder diagram signal status display;

[0233] S24) When the user clicks the query logic unsatisfied signal, the fault handling vehicle database is queried to obtain the handling measures and location pictures for display.

[0234] As attached Figure 7 As shown, the on-board intelligent diagnosis and operation and maintenance method for a tamping vehicle further includes an expert diagnosis process S3), which includes the following steps:

[0235] S31) The vehicle-mounted control network system collects electrical system data and sends the data to the bus network via the bus;

[0236] S32) The main control module collects vehicle control network bus data in real time, analyzes the vehicle bus data according to the vehicle model protocol, cyclically stores the vehicle data for a set time, and determines whether there are any abnormalities in the tamping, track shifting, and running systems; if there are any abnormalities, the main control module analyzes the analog waveform characteristics, matches the fault tree based on the characteristics, analyzes the cause of the fault based on the probability of occurrence, stores it in the vehicle database, and sends the fault code to the intelligent diagnostic display via Ethernet;

[0237] S33) The intelligent diagnostic display analyzes the fault code, searches the fault tree according to the fault code, and obtains the cause of the fault and the treatment measures;

[0238] S34) The user performs processing according to the given processing measures. After the fault processing is completed, the user fills in the fault processing instructions through the intelligent diagnosis display, recalculates the probability of occurrence of each abnormal cause of the fault tree according to the processing instructions, and updates the fault tree.

[0239] Step S32) further includes:

[0240] When the actual insertion depth of the tamping head differs from the set depth by more than a set threshold value during several consecutive tamping operation cycles, it is determined that the tamping head insertion is abnormal.

[0241] Step S32) further includes:

[0242] If the shifting fails to complete within a certain number of consecutive shifting cycles and the shifting amount does not reach the set minimum threshold, it is considered an under-shifting anomaly. If the shifting amount exceeds the set maximum threshold, it is considered an over-shifting anomaly.

[0243] Step S32) further includes:

[0244] If the track lifting fails to complete within a certain number of consecutive lifting cycles and the track lifting amount does not reach the set minimum threshold, it is considered as insufficient track lifting. If the track lifting amount exceeds the set maximum threshold, it is considered as excessive track lifting.

[0245] As attached Figure 12 As shown, the on-board intelligent diagnosis and operation and maintenance method for a tamping vehicle further includes a data analysis process S4), which includes the following steps:

[0246] S41) The vehicle-mounted control network system collects electrical system data and sends the data to the bus network via the bus;

[0247] S42) The main control module collects the vehicle bus data of the vehicle control network in real time, parses the vehicle bus data according to the vehicle model protocol, stores the vehicle bus data as a binary file, and splits it according to the set file size;

[0248] S43) The intelligent diagnostic display obtains a list of vehicle model storage files, copies the files to the intelligent diagnostic display, parses the files according to the vehicle model protocol, and stores them in the vehicle database, queries the data columns that need to be analyzed, and generates a data curve chart or data list.

[0249] As attached Figure 14 As shown, the on-board intelligent diagnosis and operation and maintenance method for a tamping vehicle further includes an operation analysis process S5), which includes the following steps:

[0250] S51) The vehicle-mounted control network system collects electrical system data and sends the data to the bus network via the bus;

[0251] S52) The main control module collects vehicle bus data from the vehicle control network in real time, parses the vehicle bus data according to the vehicle model protocol, determines whether the data is operation data including switch, keyboard or user input, and if so, parses the user operation and stores it in the operation log file, which is stored by date;

[0252] S53) The intelligent diagnostic display obtains the operation file list, copies the file to the intelligent diagnostic display, parses the operation data file according to the vehicle model protocol, displays the operation record table including time and operation content, and analyzes whether the operation complies with the formal process based on the operation sequence. If not, the record that does not comply with the process will be marked.

[0253] As attached Figure 16 As shown, the on-board intelligent diagnosis and operation and maintenance method for a tamping vehicle further includes an operation data analysis process S6), which includes the following steps:

[0254] S61) The vehicle-mounted control network system collects electrical system data and sends the data to the bus network via the bus;

[0255] S62) The main control module collects vehicle bus data from the vehicle control network in real time, parses the vehicle bus data according to the vehicle model protocol, determines whether the data is operation quality related data, and if so, stores the operation data by date as an operation record file;

[0256] S63) The intelligent diagnostic display obtains a list of operation record files, copies the files to the intelligent diagnostic display, parses the operation data files according to the vehicle model protocol, displays the operation data list and curves, analyzes the comparison effect of the data before and after the operation, and exports the operation report.

[0257] As attached Figure 18 As shown, the on-board intelligent diagnosis and operation and maintenance method for a tamping vehicle further includes an equipment history management process S7), which includes the following steps:

[0258] S71) The main control module establishes a vehicle-mounted device history database, receives in real time operation commands from the intelligent diagnostic display to add, delete, modify, and query the vehicle-mounted device history table, operates the vehicle-mounted device history table database, and returns the completed data table to the intelligent diagnostic display;

[0259] S72) The intelligent diagnostic display provides a human-computer interaction interface, displays operations for adding, deleting, modifying, and querying the vehicle-mounted device history table, and exports the vehicle-mounted device history table.

[0260] As attached Figure 20 As shown, the on-board intelligent diagnosis and operation and maintenance method for a tamping vehicle further includes an equipment maintenance management process S8), which includes the following steps:

[0261] S81) The main control module establishes a maintenance history database for key on-board equipment, and receives in real time operation commands from the intelligent diagnostic display for adding, deleting, modifying, and querying maintenance operations for key on-board equipment, operates the maintenance history database for key on-board equipment, and returns a completed data table to the intelligent diagnostic display;

[0262] S82) The intelligent diagnostic display provides a human-computer interaction interface, displays operations for adding, deleting, modifying, and querying the maintenance history of the vehicle's key equipment, and determines whether the date of the next maintenance is lower than the set time. If so, a maintenance prompt is given and the vehicle's key equipment maintenance history is exported. If not, the vehicle's key equipment maintenance history is directly exported.

[0263] As attached Figure 22 As shown, the on-board intelligent diagnosis and operation and maintenance method for a tamping vehicle further includes an equipment fault management process S9), which includes the following steps:

[0264] S91) The main control module establishes a vehicle-mounted equipment fault history database, receives in real time operation commands from the intelligent diagnostic display to add, delete, modify, and query the vehicle-mounted equipment fault history table, operates the vehicle-mounted equipment fault history table database, and returns the completed data table to the intelligent diagnostic display;

[0265] S92) The intelligent diagnostic display provides a human-computer interaction interface, displays operations for adding, deleting, modifying, and querying the vehicle-mounted equipment fault history table, and exports the vehicle-mounted equipment fault history table.

[0266] As attached Figure 24 As shown, the on-board intelligent diagnosis and operation and maintenance method for a tamping vehicle further includes an equipment operation record management process S10), which includes the following steps:

[0267] S101) The vehicle-mounted control network system collects electrical system data and sends the data to the bus network via the bus;

[0268] S102) The main control module establishes an operation record table database, collects vehicle control network bus data in real time, and parses the vehicle bus data according to the vehicle model protocol; when it is determined that the vehicle network power is on, it begins counting key cumulative quantities including mileage, time, and tamping times, and stores the operation record in the database after detecting the network power off signal;

[0269] S103) The intelligent diagnostic display provides a human-computer interaction interface for vehicle operation record database query operations, and returns a vehicle operation record list for display.

[0270] In the description of this application, it should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly disposed on the other element or indirectly disposed on the other element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or indirectly connected to the other element.

[0271] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0272] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" or "several" means two or more, unless otherwise specifically defined.

[0273] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the efficacy and purpose that can be achieved by this application.

[0274] By implementing the technical solution of the on-board intelligent diagnosis and operation and maintenance method for tamping vehicles described in the specific embodiments of this application, the following technical effects can be achieved:

[0275] (1) The on-board intelligent diagnostic operation and maintenance method for tamping vehicles described in the specific embodiments of this application has simple control logic, allowing operators to quickly locate and handle problems, with short maintenance cycles and high efficiency, which can improve the efficiency of on-site fault handling and enhance the level and efficiency of on-site and vehicle operation and maintenance management;

[0276] (2) The on-board intelligent diagnosis and operation and maintenance method for tamping vehicles described in the specific embodiments of this application can quickly locate logical problems through the tamping vehicle's "active diagnosis" + "logic diagnosis", and provide treatment measures and location screenshots, which can quickly locate and solve electrical system logic faults;

[0277] (3) The on-board intelligent diagnosis and operation and maintenance method for tamping vehicles described in the specific embodiments of this application uses the tamping vehicle's "expert diagnosis" positioning to conduct real-time monitoring of key analog quantities and sensor signals, long-term trend analysis, and combine it with on-board control logic to analyze and solve difficult problems that cannot be covered by active diagnosis and logical diagnosis;

[0278] (4) The on-board intelligent diagnosis and operation and maintenance method for tamping vehicles described in the specific embodiment of this application quickly locates abnormalities in on-board control data and operation through the tamping vehicle's "on-board data analysis" + "operation data analysis", assists in analyzing difficult faults, and provides expert analysis results to help non-professionals handle difficult faults;

[0279] (5) The on-board intelligent diagnosis and operation and maintenance method for tamping vehicles described in the specific embodiment of the present application realizes the management of daily forms such as vehicle maintenance and fault history on the vehicle side, which simplifies the on-site operation and maintenance management process; automatically counts operation and driving information through the on-board recording module, and inputs on-board equipment, maintenance, fault records and other content through the smart display or tablet, thereby realizing electronic and intelligent management of operation and maintenance, which can greatly improve the level of on-board operation and maintenance.

[0280] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0281] The above description is only a preferred embodiment of the present application and does not constitute any formal limitation to the present application. Although the present application has been disclosed as above with a preferred embodiment, it is not intended to limit the present application. Any technician familiar with the art can use the above-disclosed methods and technical contents to make many possible changes and modifications to the technical solution of the present application, or modify it into an equivalent embodiment with equivalent changes, without departing from the spirit and technical solution of the present application. Therefore, any simple modification, equivalent replacement, equivalent change and modification made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application still falls within the scope of protection of the technical solution of the present application.

Claims

1. A tamping vehicle on-board intelligent diagnosis and operation and maintenance method, characterized in that: Including active diagnosis process S1), the process includes the following steps: S11) The onboard control network system collects key switches and operating actions and determines whether active diagnosis is triggered. Based on the control logic, it determines whether the high-speed travel, hydraulic system, operating travel, tamping system, tamping posture, leveling system, track shifting system, and automatic centering systems are functioning properly. S12) If yes, it is determined whether the trigger control logic can output normally. If yes, the operation triggers the program to enter the diagnostic process. The diagnostic process determines whether the logic output satisfies according to the control logic. The signal state required to satisfy the logic is searched in the logic formula. If it is inconsistent with the current signal state, the alarm bit is filled in the sent communication protocol; S13) The main control module collects vehicle control network bus data in real time, analyzes the diagnostic alarm bit according to the vehicle model protocol, and if the alarm bit is set, analyzes the alarm bit information, generates alarm information according to the protocol, stores it in the vehicle database, and sends it to the intelligent diagnostic display via Ethernet; S14) The intelligent diagnostic display reads and displays the alarm information, searches the fault tree based on the fault code to obtain the fault cause and analysis method, and displays the treatment method; The method further comprises a logic diagnosis process S2), which comprises the following steps: S21) The vehicle-mounted control network system collects electrical system data and sends the data to the bus network via the bus; S22) The main control module collects vehicle control network bus data in real time, parses the bus communication data according to the protocol, obtains vehicle real-time data, and sends the vehicle real-time data to the intelligent diagnostic display via Ethernet; S23) The intelligent diagnostic display reads the real-time vehicle data and forms a real-time vehicle signal table based on the vehicle model data signal table; the intelligent diagnostic display reads the logic configuration file, draws a logic ladder diagram, queries the real-time signal table based on the signal name, and refreshes the ladder diagram signal status display; S24) When the user clicks the query logic unsatisfied signal, the fault handling vehicle database is queried to obtain the handling measures and location pictures for display.

2. The on-board intelligent diagnosis and operation and maintenance method of a tamping vehicle according to claim 1 is characterized in that: The method further includes an expert diagnosis process S3), which includes the following steps: S31) The vehicle-mounted control network system collects electrical system data and sends the data to the bus network via the bus; S32) The main control module collects vehicle control network bus data in real time, parses the vehicle bus data according to the vehicle model protocol, cyclically stores the vehicle data for a set period of time, and determines whether there are any abnormalities in the tamping, track shifting, and running systems; if there are any abnormalities, the main control module analyzes the analog waveform characteristics, matches the fault tree based on the characteristics, analyzes the cause of the fault based on the probability of occurrence, stores the fault in the vehicle database, and sends the fault code to the intelligent diagnostic display via Ethernet; S33) The intelligent diagnostic display analyzes the fault code, searches the fault tree according to the fault code, and obtains the cause of the fault and the solution; S34) The user handles the fault according to the given handling measures. After the fault is handled, the user fills in the fault handling instructions through the intelligent diagnosis display, recalculates the probability of occurrence of each abnormal cause of the fault tree according to the handling instructions, and updates the fault tree.

3. The on-board intelligent diagnosis and operation and maintenance method for a tamping vehicle according to claim 2 is characterized in that: The step S32) further includes: When the actual insertion depth of the tamping head differs from the set depth by more than a set threshold value during several consecutive tamping operation cycles, it is determined that the tamping head insertion is abnormal.

4. The on-board intelligent diagnosis and operation and maintenance method for a tamping vehicle according to claim 3 is characterized in that: The step S32) further includes: When the shifting cannot be completed in place within several consecutive shifting action cycles and the shifting amount does not reach the set minimum threshold, it is judged as under-shifting abnormality; when the shifting amount exceeds the set maximum threshold, it is judged as over-shifting abnormality.

5. The on-board intelligent diagnosis and operation and maintenance method for a tamping vehicle according to claim 4 is characterized in that: The step S32) further includes: When the track lifting cannot be completed in place within several consecutive pickaxe track lifting action execution cycles and the track lifting amount does not reach the set minimum threshold, it is judged as insufficient track lifting abnormality; when the track lifting amount exceeds the set maximum threshold, it is judged as excessive track lifting abnormality.

6. The on-board intelligent diagnosis and operation and maintenance method for a tamping vehicle according to any one of claims 1 to 5, characterized in that: The method further comprises a data analysis process S4), which comprises the following steps: S41) The vehicle-mounted control network system collects electrical system data and sends the data to the bus network via the bus; S42) The main control module collects vehicle bus data from the vehicle control network in real time, parses the vehicle bus data according to the vehicle model protocol, stores the vehicle bus data as a binary file, and splits it according to the set file size; S43) The intelligent diagnostic display obtains a vehicle model storage file list, copies the file to the intelligent diagnostic display, parses the file according to the vehicle model protocol, and stores it in the vehicle database, queries the data column to be analyzed, and generates a data curve chart or data list.

7. The on-board intelligent diagnosis and operation and maintenance method for a tamping vehicle according to claim 6 is characterized in that: The method further comprises an operation analysis process S5), which comprises the following steps: S51) The vehicle-mounted control network system collects electrical system data and sends the data to the bus network via the bus; S52) The main control module collects vehicle bus data from the vehicle control network in real time, parses the vehicle bus data according to the vehicle model protocol, determines whether the data is operation data including switch, keyboard or user input, and if so, parses the user operation and stores it in the operation log file, which is stored by date; S53) The intelligent diagnostic display obtains an operation file list, copies the file to the intelligent diagnostic display, parses the operation data file according to the vehicle model protocol, displays an operation record table including time and operation content, and analyzes whether the operation complies with the formal process based on the operation sequence. If not, the record that does not comply with the process will be marked.

8. The on-board intelligent diagnosis and operation and maintenance method for a tamping vehicle according to claim 1, 2, 3, 4, 5 or 7, characterized in that: The method further includes a work data analysis process S6), which includes the following steps: S61) The vehicle-mounted control network system collects electrical system data and sends the data to the bus network via the bus; S62) The main control module collects vehicle bus data from the vehicle control network in real time, parses the vehicle bus data according to the vehicle model protocol, determines whether the data is operation quality related data, and if so, stores the operation data by date as an operation record file; S63) The intelligent diagnostic display obtains a list of operation record files, copies the files to the intelligent diagnostic display, parses the operation data files according to the vehicle model protocol, displays the operation data list and curves, analyzes the comparison effect of data before and after the operation, and exports the operation report.

9. The on-board intelligent diagnosis and operation and maintenance method for a tamping vehicle according to claim 8, characterized in that: The method further includes a device history management process S7), which includes the following steps: S71) The main control module establishes a vehicle-mounted device history database, receives real-time operation commands from the intelligent diagnostic display to add, delete, modify, and query the vehicle-mounted device history table, operates the vehicle-mounted device history table database, and returns a completed data table to the intelligent diagnostic display; S72) The intelligent diagnostic display provides a human-computer interaction interface, displays operations for adding, deleting, modifying, and querying the vehicle-mounted device history table, and exports the vehicle-mounted device history table.

10. The on-board intelligent diagnosis and operation and maintenance method for a tamping vehicle according to claim 1, 2, 3, 4, 5, 7 or 9, characterized in that: The method further includes an equipment maintenance management process S8), which includes the following steps: S81) The main control module establishes a maintenance history database for key on-board equipment, and receives in real time operation commands from the intelligent diagnostic display for adding, deleting, modifying, and querying maintenance operations for key on-board equipment, operates the maintenance history database for key on-board equipment, and returns a completed data table to the intelligent diagnostic display; S82) The intelligent diagnostic display provides a human-computer interaction interface, displays operations for adding, deleting, modifying, and querying the maintenance history of the on-board key equipment, and determines whether the date of the next maintenance is lower than the set time. If so, a maintenance prompt is given and the maintenance history of the on-board key equipment is exported. If not, the maintenance history of the on-board key equipment is directly exported.

11. The on-board intelligent diagnosis and operation method of a tamping vehicle according to claim 10, characterized in that: The method further includes an equipment failure management process S9), which includes the following steps: S91) The main control module establishes a vehicle-mounted equipment fault history database, receives real-time operation commands from the intelligent diagnostic display to add, delete, modify, and query the vehicle-mounted equipment fault history table, operates the vehicle-mounted equipment fault history table database, and returns a completed data table to the intelligent diagnostic display; S92) The intelligent diagnostic display provides a human-computer interaction interface, displays operations for adding, deleting, modifying, and querying the vehicle-mounted equipment fault history table, and exports the vehicle-mounted equipment fault history table.

12. The on-board intelligent diagnosis and operation and maintenance method for a tamping vehicle according to claim 1, 2, 3, 4, 5, 7, 9 or 11, characterized in that: The method further includes a device operation record management process S10), which includes the following steps: S101) The vehicle-mounted control network system collects electrical system data and sends the data to the bus network via the bus; S102) The main control module establishes an operation record table database, collects vehicle control network bus data in real time, and parses the vehicle bus data according to the vehicle model protocol; when it is determined that the vehicle network power is on, it begins counting key accumulated quantities including mileage, time, and tamping times, and stores the operation record in the database after detecting the network power off signal; S103) The intelligent diagnostic display provides a human-computer interaction interface for vehicle operation record database query operations, and returns a vehicle operation record list for display.

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