Catenary equipment training system and control method

Abstract

The invention relates to a catenary equipment training system and a control method. Comprising a high-simulation hardware simulation module, an intelligent teacher machine management module, a multi-terminal student practical operation system module, a WebAPI data communication server module, an automatic evaluation system module, a central control and display system module and a data storage module in bidirectional data connection with the WebAPI data communication server module. According to the catenary equipment training system, 1: 1 high-simulation hardware is adopted to simulate a typical structure of a catenary, the operation process and mechanical feedback are truly restored, and the training immersion and the practical operation pertinence are improved; multi-terminal cooperative training is supported, multi-person and multi-project training can be carried out at the same time, and the training requirements of trainees of different levels are met in combination with switching of multiple practical training strategies; through the technical means of high-simulation hardware simulation, intelligent teacher management, multi-terminal collaborative practical operation, automatic evaluation, data visualization and the like, standardization, intelligence and safety of special repair training of the overhead line system are achieved, and the training efficiency and the talent training quality are improved.

Description

Technical Field

[0001] This invention relates to the field of overhead contact line equipment training technology, specifically an overhead contact line equipment training system and control method. Background Technology

[0002] With the continuous and rapid development of high-speed and electrified railways in my country, the safe and stable operation of railway power supply systems has become crucial to ensuring smooth railway transportation. As a core component of the railway traction power supply system, the standardized operation of specialized maintenance and emergency response capabilities of the overhead contact system directly affect the reliability of the entire power supply system.

[0003] Traditional catenary training models that rely on hands-on operation face multiple challenges: First, hands-on training requires the construction of standard training grounds, which occupy a large amount of space and incur high investment costs. Furthermore, the training process is severely constrained by weather and site conditions. If operational lines are used for drills, frequent "maintenance windows" are required, occupying operational resources and posing a risk to power supply safety. Second, new employees often lack sufficient connection between theory and practice, making them prone to accidents due to unfamiliarity with skills when operating real equipment. Third, traditional models struggle to simulate complex fault scenarios such as catenary line breaks, pole collapses, positioner misalignment exceeding limits, and abnormal contact wire height, hindering the comprehensive improvement of employees' skills.

[0004] Existing technologies lack comprehensive training systems capable of accurately reproducing the overhead contact line structure and operational procedures, supporting multi-terminal collaborative training, and possessing automatic and intelligent assessment functions. This makes it difficult to meet the urgent need for highly skilled and specialized personnel in railway operations. Therefore, those skilled in the art provide an overhead contact line equipment training system and control method to address the problems mentioned in the background. Summary of the Invention

[0005] The purpose of this invention is to provide a training system and control method for overhead contact line equipment to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A training system and control method for overhead contact line equipment includes a high-fidelity hardware simulation module, an intelligent instructor management module, a multi-terminal student practice system module, a WebAPI data communication server module, an automatic assessment system module, a central control and display system module, and a data storage module that is bidirectionally connected to the WebAPI data communication server module. As a further aspect of the present invention: the high-fidelity hardware simulation module includes physical models of three typical catenary structures: no-crossing branch, crossing branch, and six-span electrical phase separation. The supports, cantilever arms, and positioners are made of industrial-grade materials. The high-fidelity hardware simulation module is equipped with high-precision sensors, achieving displacement measurement accuracy of ±0.1mm. Precise control is achieved through a PLC controller, with a response time of no more than 20ms, and it supports synchronous linkage with the catenary operation vehicle model and parameter display screen. The high-fidelity hardware simulation module is used to reproduce typical catenary structures at a 1:1 high-precision scale and provide real-time mechanical feedback. As a further aspect of the present invention: the intelligent instructor machine management module supports switching between conventional railway mode and high-speed railway mode training strategies, pre-stores standard operating parameters for different catenary supports and different scenarios for guide height and pull-out value, and can issue special training tasks to the designated multi-terminal student practice modules, while monitoring the training progress of students in real time; the intelligent instructor machine management module is used for training strategy configuration, standard parameter input, task issuance, student status monitoring and performance management; As a further aspect of the present invention: the multi-terminal student practical operation system module includes multiple tablet terminals, each corresponding to different assessment items such as six-span electrical phase separation, cross-type turnout, and non-cross-type turnout; after submitting parameter settings, students can operate train operation and turnout switching through the tablet terminals, driving the high-fidelity hardware simulation module to respond synchronously; the multi-terminal student practical operation system module is used for students to receive training tasks, input operation parameters, and drive the high-fidelity hardware simulation module to act. As a further aspect of the present invention: the WebAPI data communication server module uses the HTTP / 2 protocol to implement data transmission, with an interface response time of no more than 50ms, supports simultaneous processing of data interaction from 10 terminals, and ensures data transmission security through a data encryption algorithm; the WebAPI data communication server module is used to realize real-time data interaction between various modules through a unified interface protocol. As a further aspect of the present invention: the automatic assessment system module calculates parameter deviations through an intelligent assessment algorithm, and displays the error and correct values ​​on the data screen of the central control and display system module using a visual method of color differentiation and numerical comparison, thereby achieving automated and standardized assessment; the automatic assessment system module is used to compare the trainee's operating parameters with the standard parameters in real time, calculate the parameter deviations, and generate assessment results. As a further aspect of the present invention: the central control and display system module is used to visually display training process data, assessment results, and equipment status; As a further aspect of the present invention: the data storage module adopts a MySQL database, which includes five core data tables: user table, standard parameter table, fault model table, operation record table, and score table, with a data storage period of no less than 3 years; the data storage module is used to store user data, training process records and assessment score data, standard parameter library and fault model data, hardware device status and control command data, and real-time operation parameters and comparison result data.

[0007] As a further aspect of the present invention: the overhead contact line equipment training system supports three interaction methods: Hardware interaction: Students input parameters through a tablet terminal, and the system drives the high-fidelity hardware simulation module to respond in real time; Touchscreen operation: Both the instructor's and the student's devices support task configuration and parameter settings via touchscreen; Visualized Interaction: The assessment results and parameter comparison information are presented intuitively through the data display interface.

[0008] The high-fidelity hardware simulation module supports simulation of complex fault scenarios such as positioner offset exceeding limits and abnormal contact wire height, providing trainees with zero-risk emergency response training.

[0009] A control method applied to a catenary equipment training system includes the following steps: S1: The instructor sets up the training strategy through the intelligent instructor machine management module, selects the conventional rail mode or the high-speed rail mode, and enters the standard operating parameters for the guide height and pull-out value in the corresponding scenario. S2: The intelligent instructor machine management module sends special training tasks to the designated tablet terminal of the multi-terminal student practical system module; S3: After receiving the task, the multi-terminal student practice system module sends an initialization command to the high-fidelity hardware simulation module through the WebAPI data communication server module, and the corresponding catenary structure model completes the initialization. S4: The trainee inputs operation parameters through the tablet terminal. The parameter data is transmitted to the PLC controller through the WebAPI data communication server module, which drives the high-fidelity hardware simulation module to operate. The high-precision sensor collects real-time data and feeds it back to the trainee. S5: After the trainee completes the operation, the WebAPI data communication server module will transmit the operation data to the automatic assessment system module; S6: The automatic assessment system module compares the operating parameters with the standard parameters, calculates the deviation, and generates the assessment results; S7: The central control and display system module receives the assessment results and displays them visually; S8: The data storage module stores training process records, operation parameters, and assessment results.

[0010] Compared with the prior art, the beneficial effects of the present invention are: ① This invention constructs a typical overhead contact line structure model at a 1:1 scale and combines it with high-precision sensors and PLC control to achieve real-time feedback and precise control of key operating parameters. This allows trainees to obtain an operational experience close to that of a real site without occupying operating lines or introducing power supply risks, significantly improving the safety and authenticity of the training.

[0011] ② Based on the unified data communication architecture of WebAPI, it supports parallel training in multiple terminals and multiple scenarios, solving the problems of high investment cost, poor scalability and low training efficiency in the traditional single-site and single-workstation training mode, and greatly improving the utilization rate of training resources and organizational efficiency.

[0012] ③ By using an automated assessment system to quantitatively compare trainees’ operational parameters with standard operating parameters and generate assessment results, the subjectivity of manual evaluation is avoided, and assessment standards are unified, results are quantifiable, and processes are traceable. This is a key technical effect that traditional overhead contact line training methods cannot achieve.

[0013] ④ It can simulate complex fault conditions such as positioner deviation exceeding limits and abnormal contact wire height, enabling trainees to conduct repeated emergency response training in an environment without safety risks, significantly improving the emergency response capabilities and standardization of practitioners when facing real sudden faults.

[0014] ⑤ Through the coordinated use of high-fidelity hardware, intelligent instructor management, multi-terminal hands-on practice, automatic assessment, and centralized data storage, the entire training process is digitally managed, providing systematic technical support for personnel competency assessment, training program optimization, and long-term skills enhancement. Attached Figure Description

[0015] Figure 1 This is a structural block diagram of a training system for overhead contact line equipment. Figure 2 This is a flowchart illustrating a control method for a catenary equipment training system. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] Example 1 like Figure 1As shown in the figure, the catenary equipment training system provided by the present invention includes a high-fidelity hardware simulation module, an intelligent instructor machine management module, a multi-terminal student practice system module, a WebAPI data communication server module, an automatic assessment system module, a central control and display system module, and a data storage module that is bidirectionally connected to the WebAPI data communication server module. The high-fidelity hardware simulation module is the physical core of this system. It is used to reproduce the typical structure of the field catenary in the laboratory with a 1:1 high precision, providing trainees with an operational experience with realistic mechanical feedback. Specifically, the module includes three switchable physical models of typical catenary structures: no-crossing branch, crossing branch, and six-span electrical phase separation. Each model is made of high-precision mechanical parts, with the support, cantilever, and positioner made of high-strength materials such as metal alloys (e.g., aluminum alloy, stainless steel) to ensure their mechanical strength and durability, and to ensure that the geometric dimensions are consistent with the real equipment.

[0018] To achieve precise control and measurement, this module is equipped with high-precision displacement sensors (accuracy up to ±0.1mm), angle sensors, and force sensors to collect key parameters such as positioner position, contact wire height, pull-out value, and static contact pressure in real time. All sensors and actuators (such as servo motors and cylinders) are connected to a central PLC (Programmable Logic Controller). The PLC is responsible for receiving control commands from the upper-level system, driving the actuators, and collecting sensor data, with a control response time of no more than 20ms. The high-fidelity hardware simulation module also supports simulation of complex fault scenarios such as positioner offset exceeding limits and abnormal contact wire height, allowing trainees to conduct zero-risk emergency response training. In addition, this module can also be linked with a scaled-down catenary work vehicle model and an independent parameter display screen. The movement of the work vehicle model will trigger changes in the status of the catenary model at the corresponding position, and the parameter display screen will display the measured values ​​such as the current model's guide height and pull-out value in real time.

[0019] The intelligent instructor management module runs on a dedicated computer or large-screen touchscreen terminal for instructors and serves as the management and control center for the training process. The software interface provides a one-click switching function between conventional railway mode (hereinafter referred to as "conventional railway mode") and high-speed railway mode. Both modes have a pre-stored standard operating parameter library that conforms to the corresponding technical standards and is suitable for different support column numbers and scenarios (such as straight lines, curves, and anchor joints) for guide height and pull-out values.

[0020] Instructors can use this module to perform the following operations: create training sessions and student accounts; select or manually enter standard operating parameters for this training from the standard parameter library; select and assign specific training tasks from the three assessment items of "six-span electrical phase separation", "crossing turnout", and "non-crossing turnout" for different students or groups; monitor the current operation steps, submitted parameters, and progress status of all online students in real time during the training process; and view, manage, and analyze historical assessment results after the training is completed.

[0021] The multi-terminal trainee hands-on system module consists of multiple industrial tablet PCs (hereinafter referred to as "tablet terminals") that serve as trainee operating stations, with each terminal corresponding to an independent trainee operating station. The software interface running on the terminal corresponds one-to-one with the three physical structures of the high-fidelity hardware simulation module, namely, three dedicated operating programs: "six-span electrical phase separation", "cross-line turnout", and "no-cross-line turnout".

[0022] After logging in, trainees can receive personalized tasks from instructors. In the operation interface, trainees can input or adjust parameters such as the positioner's guide height and pull-out value. After setting the parameters, trainees can operate the "train" and control the "switches" using virtual buttons on the interface. These operation commands will drive the corresponding physical model in the high-fidelity hardware simulation module to produce synchronous movements, such as changing the positioner's attitude or moving the contact wire position, allowing trainees to intuitively observe the impact of parameter adjustments on the geometry of the overhead contact system.

[0023] The WebAPI data communication server module serves as the data bus and communication hub for the entire system. It adopts a RESTful API design based on the HTTP / 2 protocol and provides a unified set of interface protocols. All other system modules interact with this module by calling these API interfaces, thereby achieving decoupling between modules.

[0024] The server is deployed on a high-performance industrial computer, ensuring an average interface response time of ≤50ms and stably supporting simultaneous concurrent access from at least 10 terminals (instructor's machine and multiple student tablets). All transmitted data uses TLS encryption and a custom message verification algorithm to ensure communication security and data integrity. It is mainly responsible for command routing, data format conversion, session management, and flow control.

[0025] The automatic assessment system module obtains the final operation parameters submitted by students from their tablet terminals in real time through the WebAPI server, and retrieves the current task standard parameters preset by the instructor from the data storage module.

[0026] The module incorporates an intelligent evaluation algorithm that compares each trainee's operating parameters with standard parameters, calculating absolute deviations and relative errors. The evaluation results not only include a "pass / fail" judgment but also detail the set value, measured value, allowable error range, and deviation value for each parameter. This data is then instantly pushed to the central control and display system module.

[0027] The central control and display system module can be deployed on a large data visualization screen in the center of the training classroom. It can obtain and integrate data from the entire system in real time from the WebAPI server and display it visually.

[0028] The display mainly includes: real-time video feeds of each student's workstation (monitoring the status of the hardware model); dynamic comparison charts of the student's current operating parameters with standard parameters, where incorrect values ​​are typically highlighted in red and correct values ​​in green; details of the assessment results generated by the automatic assessment system; and the connection status and health indicator lights of various hardware devices within the system (such as PLCs and sensors). This module provides instructors with a global monitoring perspective.

[0029] The data storage module, implemented using a MySQL relational database, is used for persistent storage of all system data. The database design includes the following core data tables: User table: Stores instructor and student account information; Standard parameter table: Stores parameters such as standard guide height and pull-out value under different modes and scenarios; Fault Model Table: Stores simulation parameters for various fault scenarios (such as positioner offset exceeding limits, contact wire height abnormality); Operation Log Sheet: Records each student's operation instructions, parameter settings, and operation timestamps in chronological order; Grade Sheet: Stores detailed assessment results and final scores for each practical training task; The system is configured to store all operation logs and performance data for at least 3 years for historical retrieval and training quality analysis.

[0030] This overhead contact line equipment training system supports three interactive modes: Hardware interaction: Students input parameters through a tablet terminal, and the system drives the high-fidelity hardware simulation module to respond in real time, obtaining tactile and visual feedback; Touchscreen operation: Both the instructor's and student's terminals support touchscreen for task configuration and parameter settings, which is intuitive and convenient; Visualized Interaction: The data display interface intuitively presents assessment results and parameter comparison information, realizing transparent training management driven by data.

[0031] Example 2 This embodiment describes the control flow for training using the system described in Embodiment 1, such as... Figure 2 As shown, the specific steps include: S1: Training Strategy Setting and Parameter Input Instructors log in to the intelligent instructor management module. First, they select "conventional railway mode" or "high-speed rail mode" according to the training objectives. Then, they select the specific catenary scenario for the current training task (e.g., the middle column of a straight section in high-speed rail mode). The system will automatically load the corresponding standard guide height and pull-out value parameters. Instructors can also make fine adjustments as needed and confirm the input.

[0032] S2: Specialized training tasks are issued. The instructor selects one or more trainees from the trainee list and chooses specific tasks such as "six-span electrical phase adjustment", "cross-line turnout inspection and adjustment" or "non-cross-line turnout inspection and adjustment" from the task library. The instructor clicks "issue", and the instruction is pushed to the designated trainee's tablet terminal through the WebAPI data communication server module.

[0033] S3: Hardware Model Initialization Trainees receive tasks on the tablet terminal of the multi-terminal trainee hands-on system module. After the trainee clicks "Start Training", the tablet software sends initialization instructions to the high-fidelity hardware simulation module by calling the WebAPI interface. The PLC controller receives the instructions and drives the physical model of the corresponding contact wire structure (such as crossover) to reset to the preset initial state.

[0034] S4: Student Hands-on Practice and Hardware Response Trainees input operation parameters on the tablet terminal interface (such as adjusting the pull-out value of #103 support to +300mm). This parameter data is forwarded to the PLC controller via the WebAPI server. The PLC drives the servo motor and other actuators, so that the corresponding positioner in the hardware model moves accurately to the target position. At the same time, high-precision sensors collect the actual position data after the movement in real time and feed it back to the trainee's tablet interface through the same path for the trainee to confirm.

[0035] S5: Submit Operation Data After completing all parameter settings and confirming that they are correct, the trainee clicks "Submit Assessment". At this point, all parameter data packets for this operation are sent to the automatic assessment system module via the WebAPI data communication server module.

[0036] S6: Intelligent Automated Assessment After receiving the student's operation data, the automatic assessment system module immediately retrieves the standard parameters for this task from the data storage module. It then uses an intelligent assessment algorithm to perform item-by-item comparison and deviation calculation. For example, it calculates the deviation between the student's set value of +300mm and the standard value of +310mm to determine if it is within the allowable ±5mm error range. Finally, it generates an assessment report containing deviation analysis for each item and the overall assessment results.

[0037] S7: Results Visualization The assessment report is sent to the central control and display system module via the WebAPI server. The central screen is immediately updated, visually displaying the trainee's operation value and standard value in the form of data tables, bar charts, and other comparisons, and using bright colors to indicate correctness and error.

[0038] S8: End-to-end data storage After the WebAPI data communication server module completes the corresponding steps, it synchronously writes the following data to the data storage module: the task issuance record generated in step S2, the real-time operation record of trainees (including timestamps) generated in step S4, and the assessment result details generated in step S6.

[0039] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A training system for overhead contact line equipment, characterized in that, include: The system includes a high-fidelity hardware simulation module, an intelligent instructor management module, a multi-terminal student hands-on system module, a WebAPI data communication server module, an automatic assessment system module, a central control and display system module, and a data storage module that is bidirectionally connected to the WebAPI data communication server module. The high-fidelity hardware simulation module is used to reproduce the typical structure of the overhead contact line at a 1:1 high-precision scale and provide real-time mechanical feedback. The intelligent instructor machine management module is used for training strategy configuration, standard parameter input, task distribution, student status monitoring and grade management. The multi-terminal student hands-on system module is used for students to receive training tasks, input operation parameters, and drive the high-fidelity hardware simulation module to perform actions. The WebAPI data communication server module is used to realize real-time data interaction between various modules through a unified interface protocol. The automatic assessment system module is used to compare the trainee's operating parameters with the standard parameters in real time, calculate the parameter deviations, and generate assessment results. The central control and display system module is used to visually display training process data, assessment results, and equipment status. The data storage module is used to store user data, training process records and assessment results data, standard parameter library and fault model data, hardware device status and control command data, and real-time operation parameters and comparison results data.

2. The overhead contact line equipment training system according to claim 1, characterized in that, The high-fidelity hardware simulation module includes physical models of three typical catenary structures: no crossover, crossover, and six-span electrical phase separation. The high-fidelity hardware simulation module is equipped with a high-precision sensor, with a displacement measurement accuracy of ±0.1mm. It achieves precise control through a PLC controller, with a response time of no more than 20ms, and supports synchronous linkage with the overhead contact line operation vehicle model and parameter display screen.

3. The overhead contact line equipment training system according to claim 1, characterized in that, The intelligent instructor management module supports switching between conventional and high-speed rail training strategies. It has pre-stored standard operating parameters for different overhead contact line supports and guide height and pull-out values ​​under different scenarios. It can also issue special training tasks to the designated multi-terminal student practice modules and monitor the students' training progress in real time.

4. The overhead contact line equipment training system according to claim 1, characterized in that, The multi-terminal trainee practical system module includes multiple tablet terminals, which correspond to different assessment items such as six-span electrical phase separation, cross-branch, and no-cross-branch. After submitting parameter settings, trainees can operate train operation and switch switching via tablet terminals, driving the high-fidelity hardware simulation module to respond synchronously.

5. The overhead contact line equipment training system according to claim 1, characterized in that, The automatic evaluation system module calculates parameter deviations through intelligent evaluation algorithms and displays error and correct values ​​on the data screen of the central control and display system module using a visual method that distinguishes by color and compares numerical values, thereby achieving automated and standardized evaluation.

6. The overhead contact line equipment training system according to claim 1, characterized in that, The overhead contact line equipment training system supports three interactive methods: Hardware interaction: Students input parameters through a tablet terminal, and the system drives the high-fidelity hardware simulation module to respond in real time; Touchscreen operation: Both the instructor's and the student's devices support task configuration and parameter settings via touchscreen; Visualized Interaction: The assessment results and parameter comparison information are presented intuitively through the data display interface.

7. The overhead contact line equipment training system according to claim 1, characterized in that, The high-fidelity hardware simulation module supports simulation of complex fault scenarios such as positioner offset exceeding limits and abnormal contact wire height, providing trainees with zero-risk emergency response training.

8. The overhead contact line equipment training system according to claim 1, characterized in that, The WebAPI data communication server module uses the HTTP / 2 protocol to implement data transmission, with an interface response time of no more than 50ms. It supports simultaneous processing of data interaction from 10 terminals and ensures data transmission security through data encryption algorithms.

9. A catenary equipment training system according to claim 1, characterized in that, The data storage module uses a MySQL database and includes five core data tables: user table, standard parameter table, fault model table, operation record table, and performance table. The data storage period is no less than 3 years.

10. A control method for a catenary equipment training system, applied to the catenary equipment training system according to any one of claims 1-9, characterized in that, Includes the following steps: S1: The instructor sets up the training strategy through the intelligent instructor machine management module, selects the conventional rail mode or the high-speed rail mode, and enters the standard operating parameters for the guide height and pull-out value in the corresponding scenario. S2: The intelligent instructor machine management module sends special training tasks to the designated tablet terminal of the multi-terminal student practical system module; S3: After receiving the task, the multi-terminal student practice system module sends an initialization command to the high-fidelity hardware simulation module through the WebAPI data communication server module, and the corresponding catenary structure model completes the initialization. S4: The trainee inputs operation parameters through the tablet terminal. The parameter data is transmitted to the PLC controller through the WebAPI data communication server module, which drives the high-fidelity hardware simulation module to operate. The high-precision sensor collects real-time data and feeds it back to the trainee. S5: After the trainee completes the operation, the WebAPI data communication server module will transmit the operation data to the automatic assessment system module; S6: The automatic assessment system module compares the operating parameters with the standard parameters, calculates the deviation, and generates the assessment results; S7: The central control and display system module receives the assessment results and displays them visually; S8: The data storage module stores training process records, operation parameters, and assessment results.

Images