Motor train unit maintenance test system based on microcomputer network system

Abstract

The invention discloses a motor train unit maintenance test system based on a microcomputer network system. The motor train unit maintenance test system comprises a main controller, a communication module, a signal source and detection equipment module, a photoelectric conversion module and a relay array module. And the main controller controls the communication module, the signal source and detection equipment module and the relay array module to work through platform internal data communication. And the relay array module forms an electrical path between the signal source and the detection equipment module and the detected piece. The signal source and the detection trial preparation module provide various electrical signals required by testing and a detection function of the electrical signals. The photoelectric conversion module converts an input optical signal into an electric signal and outputs an optical signal to a tested piece. According to the system, when advanced repair is carried out on the microcomputer network system of the motor train unit, one-button type automatic testing of all parts of the microcomputer network system can be achieved, testing results can be automatically displayed, reports can be automatically exported, the testing efficiency is greatly improved, and the error rate caused by manual negligence is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of train maintenance and detection, and in particular to a train maintenance and testing system based on a microcomputer network system. Background Art

[0002] Advanced maintenance of EMUs refers to the process of comprehensive and in-depth inspection, testing, repair and updating of EMUs to ensure the reliability and safety of their operation. This process not only includes the maintenance of the mechanical parts of the vehicle, but also involves many aspects such as the electrical system and control system. Advanced maintenance of EMUs is an important guarantee for the safe operation of high-speed railways. Through advanced maintenance, potential safety hazards can be discovered and resolved in a timely manner, the service life of the vehicle can be extended, and operating costs can be reduced. At the same time, advanced maintenance is also an effective means to improve service quality and enhance passenger satisfaction. Advanced maintenance of EMUs usually includes the following stages: pre-inspection and preparation, disassembly and cleaning, detection and diagnosis, repair and replacement, assembly and commissioning, trial operation and delivery. Each stage has strict standards and processes to ensure the quality and efficiency of maintenance work.

[0003] In the prior art, a manual testing method with full human participation is adopted during the maintenance of EMUs. The test personnel need to connect the test fixtures according to the test items such as communication function test, digital input test, digital output test, analog input test and analog output test respectively, and manually give incentives item by item by connecting the accompanying test equipment, and manually judge whether the test is passed by observing the relevant test pages and indicator lights on the computer. Therefore, it has the defects of low efficiency and long test cycle, and requires full human participation, which is inevitable due to negligence. Summary of the invention

[0004] According to the problems existing in the prior art, the present invention discloses a maintenance and testing system for EMUs based on a microcomputer network system, comprising: a main controller, a communication module, a signal source and detection equipment module, a photoelectric conversion module and a relay array module;

[0005] The main controller controls the communication module, the signal source and the detection device module and the relay array module to work through the platform's internal data communication;

[0006] The communication module performs initialization configuration based on the initialization function and configures the network port;

[0007] The signal source and detection equipment module provides various electrical signals and electrical signal detection performance required for testing;

[0008] The photoelectric conversion module converts the input optical signal into an electrical signal and transmits the optical signal to the device under test;

[0009] The relay array module forms an electrical path between the signal source and the detection device module and the device under test.

[0010] Furthermore, the communication module includes a driver layer, middleware, application layer and execution layer. The driver layer executes the driving function of the hardware interface. The middleware mainly provides the interface functions and library files required for the operation of the host computer and executes the communication protocol of the multi-function vehicle bus software. The application layer calls the shared library and interacts with the middleware through the software during operation. The execution layer regulates the relevant control logic of data processing and completes the relevant configuration of the network port. When the communication module is powered on, the system performs system initialization and initialization configuration through the initialization function.

[0011] Furthermore, the relay array module includes a relay board arranged in a PXI chassis, and the main controller transmits control instructions through a PXI bus in the PXI chassis to control the on and off of relays in each relay board. Through external wiring, a bus structure including four buses is formed between the relay boards, one end of each bus is connected to any signal source resource or detection resource, and the other end is connected to a group of input and output port groups, each input and output port group has multiple input and output ports, and each input and output port is connected to an input or output port of a functional circuit on the device under test; each bus is connected to a signal resource or multiple detection resources at the same time, and each bus is connected to an input or output port of the circuit under test at the same time, so that the tooling can provide multiple signal resources and detection resources to one functional circuit of the device under test at the same time, and can meet the electrical testing requirements of all functional circuits.

[0012] Furthermore, the signal source and detection equipment module provides various excitation sources required for testing the device under test, and detects various signals output by the device under test, including at least an oscilloscope, a programmable DC power supply, a programmable AC power supply, a programmable digital multimeter, a programmable DC power supply and a relay board; wherein the oscilloscope is used to collect and measure the physical quantities of the amplitude, high level, low level, frequency, duty cycle, phase delay and phase difference of the sinusoidal or pulse voltage signal.

[0013] Furthermore, the photoelectric conversion module converts the optical signal output by the device under test into an electrical signal, and converts the electrical signal output by the platform into an optical signal and provides it to the device under test.

[0014] Furthermore, the main controller is programmed using the LabView graphical programming language, and the main controller at least includes a test process configuration file and a test standard configuration file reading module, a test process execution module, a test result report generation module, a system monitoring and error handling module, a human-computer interaction module and a user management module.

[0015] Furthermore, the test process configuration file and test standard configuration file reading module reads the data in the test process configuration file and test standard configuration file corresponding to the device under test, and the software in the main controller uses the above data to control the test execution module to complete the automatic testing process of the device under test and determine the test results.

[0016] Furthermore, the test process execution module uses the test process data and the test standard data to control the operation of each device in the system, read the data returned by each device, and complete the entire test process of the device under test.

[0017] Furthermore, the test result report generation module outputs the test result of the device under test obtained by the test process execution module to an Excel file according to a predefined format, and saves the Excel file on the local hard disk of the controller.

[0018] Furthermore, the system monitoring and error handling module monitors whether the working status of each device in the platform is normal, and monitors whether the input and output electrical signals are within the allowable range. If the tooling equipment is abnormal or the input and output electrical signals exceed the allowable range, the module automatically stops the platform operation and reports an error or alarm to the operator through the human-computer interaction interface.

[0019] Due to the adoption of the above technical solution, the present invention provides a maintenance test system for EMUs based on a microcomputer network system, which can realize one-click automatic testing by adjusting the corresponding configuration files according to different vehicle models. The platform can realize the testing of circuits such as digital input and output circuits, analog input and output circuits, PT100 temperature measurement circuits, speed pulse detection circuits, PWM pulse output circuits, PWM drive feedback circuits, and communication circuits such as Ethernet, RS485, RS232, CAN, HDLC, MVB, WTB, and WorldFIP, and directly display the test results and export the test report after the test is completed. The system can realize one-click automatic testing of various components of the microcomputer network system when the EMU microcomputer network system carries out advanced maintenance, and automatically display the test results and export the report, which greatly improves the test efficiency and reduces the error rate caused by manual negligence. It has a positive driving effect on reducing the time for advanced maintenance and inspection of EMUs and improving the quality of maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a structural block diagram of the EMU maintenance and testing system based on the microcomputer network system of the present invention;

[0022] Figure 2 The figure is a working principle diagram of the relay array module of the present invention. DETAILED DESCRIPTION

[0023] In order to make the technical solutions and advantages of the present invention more clear, the technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention:

[0024] like Figure 1 The maintenance and testing system of a train set based on a microcomputer network system shown in the figure includes a main controller, a communication module, a signal source and detection equipment module, an optoelectronic conversion module and a relay array module. The black arrow in the figure represents an electrical signal, the green arrow represents the internal data communication of the platform, and the red arrow represents the external data communication of the platform. The main controller controls the operation of the communication module, the signal source and detection equipment module and the relay array module through the internal data communication of the platform. The relay array module constitutes an electrical path between the signal source and detection equipment module and the device under test. The signal source and detection equipment module provide various electrical signals required for the test and the detection function of the electrical signal. The optoelectronic conversion module realizes the conversion of the input optical signal into the electrical signal and outputs the optical signal to the device under test.

[0025] The software architecture of the communication module mainly consists of four parts, namely the driver layer, middleware, application layer and execution layer. Here, the driver layer mainly implements the driver function of the hardware interface; the middleware mainly provides the interface functions and library files required for the operation of the host computer, and implements software communication protocols such as the multi-function vehicle bus (MVB); the application layer mainly completes the function function, and interacts with the middleware by calling the shared library during the operation; the execution layer mainly implements the relevant control logic of data processing and completes the relevant configuration of the network port. After the communication module is powered on, the system initializes the system through the initialization function and performs initialization configuration. After the system initialization is completed, the application layer related tasks will be created, mainly including: indicator light task, communication task, operation record task, and fault record task.

[0026] Furthermore, in order to realize the function of testing the DUT, the EMU maintenance test system based on the microcomputer network system needs to form an electrical path between various signal sources and detection equipment in the platform and various functional circuits of the DUT. The formation of the electrical path is mainly completed by the relay array module.

[0027] Furthermore, each relay board and a main controller are installed in the PXI chassis. The main controller transmits control instructions through the PXI bus in the PXI chassis to control the on and off of the relays in each relay board. Through external wiring, a bus structure including 4 buses is formed between the relay boards. One end of each bus can be connected to any signal source resource or detection resource, and the other end is connected to a group of input and output port groups. Each input and output port group has multiple input and output ports, and each input and output port can be connected to the input or output port of a functional circuit on the device under test. Each bus can be connected to one signal resource and / or multiple detection resources at the same time (if necessary and there is no conflict between the resources), and each bus can be connected to one input or output port of the circuit under test at the same time. In this way, the tooling can provide multiple signal resources and detection resources to one functional circuit of the device under test at the same time, which can meet the electrical testing requirements of all functional circuits. The bus structure diagram is shown as follows. Figure 2 shown.

[0028] Furthermore, the signal source and detection equipment module is the core module of the platform, which provides various excitation sources required for testing the DUT and detects various signals output by the DUT. The module consists of an oscilloscope, a programmable DC power supply, a programmable AC power supply, a programmable digital multimeter, a programmable DC power supply, and a relay board.

[0029] Furthermore, the oscilloscope is used to collect and measure the amplitude, high level, low level, frequency, duty cycle, phase delay, phase difference and other physical quantities of the sine or pulse voltage signal. Provide high-precision DC voltage and current output. Provide high-precision AC voltage and current output. Can detect physical quantities such as DC current, DC voltage, AC current, impedance, etc. Can provide a higher voltage DC voltage output. As an excitation source for the optical signal output by the device under test in the photoelectric conversion module.

[0030] Furthermore, the function of the photoelectric conversion module is to convert the optical signal output by the device under test into an electrical signal for the platform to detect. And the electrical signal output by the platform is converted into an optical signal and provided to the device under test. The photoelectric conversion module consists of six photoelectric conversion circuit boards, which can realize 36-way photoelectric conversion and 36-way electro-optical conversion.

[0031] Furthermore, the test software in the main controller is programmed using the LabView graphical programming language. LabView has a rich virtual instrument driver function and can communicate with various signal sources, detection equipment, relay boards, bus interface devices and gateways in the tooling. It controls the work of various devices and reads the data returned by various devices.

[0032] Furthermore, the main controller at least includes a test process configuration file and a test standard configuration file reading module, a test process execution module, a test result report generation module, a system monitoring and error handling module, a human-computer interaction module and a user management module.

[0033] Furthermore, the test process configuration file and test standard configuration file reading module reads the data in the test process configuration file and test standard configuration file corresponding to the device under test, and the platform software uses these data to control the test execution module to complete the automatic testing process of the device under test and determine the test results.

[0034] Furthermore, the test process execution module uses the test process data and the test standard data to control the operation of each device in the platform, read the data returned by each device, and complete the entire test process of the device under test.

[0035] Furthermore, the test result report generation module outputs the test result of the device under test obtained by the test process execution module to an Excel file according to a predefined format, and saves the Excel file on the local hard disk of the controller.

[0036] Furthermore, the system monitoring and error handling module monitors whether the working status of each device in the platform is normal and whether the input and output electrical signals are within the allowable range. If the tooling equipment is abnormal or the input and output electrical signals exceed the allowable range, the module automatically stops the platform and reports an error or alarm to the operator through the human-computer interaction interface.

[0037] Furthermore, the human-computer interaction module controls the human-computer interaction interface to display the current test items and test results, and executes operations such as starting a test and stopping a test.

[0038] Furthermore, the user management module manages the use rights of the system, and only authorized operators can start and use the platform, and records the operator information of each device under test.

[0039] The invention discloses a maintenance and testing system for multiple units based on a microcomputer network system. The system can realize one-key automatic testing by adjusting corresponding configuration files according to different multiple units. The platform can realize the testing of circuits such as digital quantity input and output circuits, analog quantity input and output circuits, PT100 temperature measurement circuits, speed pulse detection circuits, PWM pulse output circuits, PWM drive feedback circuits, and communication circuits such as Ethernet, RS485, RS232, CAN, HDLC, MVB, WTB, and WorldFIP, and directly display the test results and export the test reports after the test is completed.

[0040] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A maintenance and testing system for EMU based on a microcomputer network system, characterized in that include: Main controller, communication module, signal source and detection equipment module, photoelectric conversion module and relay array module; The main controller controls the communication module, the signal source and the detection device module and the relay array module to work through the platform's internal data communication; The communication module performs initialization configuration based on the initialization function and configures the network port; The signal source and detection equipment module provides various electrical signals and electrical signal detection performance required for testing; The photoelectric conversion module converts the input optical signal into an electrical signal and transmits the optical signal to the device under test; The relay array module forms an electrical path between the signal source and the detection device module and the device under test.

2. The EMU maintenance and testing system based on a microcomputer network system according to claim 1 is characterized in that: The communication module includes a driver layer, a middleware, an application layer and an execution layer. The driver layer executes the driving function of the hardware interface. The middleware mainly provides the interface functions and library files required for the operation of the host computer and executes the communication protocol of the multi-function vehicle bus software. The application layer calls the shared library and interacts with the middleware during the operation of the software. The execution layer regulates the relevant control logic of data processing and completes the relevant configuration of the network port. When the communication module is powered on, the system performs system initialization and initialization configuration through the initialization function.

3. The EMU maintenance and testing system based on a microcomputer network system according to claim 1 is characterized in that: The relay array module includes a relay card arranged in a PXI chassis, and the main controller transmits control instructions through a PXI bus in the PXI chassis to control the on and off of relays in each relay card. A bus structure including four buses is formed between the relay cards through external wiring, one end of each bus is connected to any signal source resource or detection resource, and the other end is connected to a group of input and output port groups, each input and output port group has multiple input and output ports, and each input and output port is connected to an input or output port of a functional circuit on the device under test; each bus is connected to a signal resource or multiple detection resources at the same time, and each bus is connected to an input or output port of the circuit under test at the same time, so the tooling can provide multiple signal resources and detection resources to one functional circuit of the device under test at the same time, and can meet the electrical test requirements of all functional circuits.

4. The EMU maintenance and testing system based on a microcomputer network system according to claim 1 is characterized in that: The signal source and detection equipment module provides various excitation sources required for testing the device under test and detects various signals output by the device under test, and at least includes an oscilloscope, a programmable DC power supply, a programmable AC power supply, a programmable digital multimeter, a programmable DC power supply and a relay board; wherein the oscilloscope is used to collect and measure the physical quantities of the amplitude, high level, low level, frequency, duty cycle, phase delay and phase difference of the sinusoidal or pulse voltage signal.

5. The EMU maintenance and testing system based on a microcomputer network system according to claim 1 is characterized in that: The photoelectric conversion module converts the optical signal output by the device under test into an electrical signal, and converts the electrical signal output by the platform into an optical signal and provides it to the device under test.

6. The EMU maintenance and testing system based on a microcomputer network system according to claim 1 is characterized in that: The main controller is programmed using the LabView graphical programming language, and the main controller at least includes a test process configuration file and a test standard configuration file reading module, a test process execution module, a test result report generation module, a system monitoring and error handling module, a human-computer interaction module and a user management module.

7. The EMU maintenance and testing system based on a microcomputer network system according to claim 6 is characterized by: The test process configuration file and test standard configuration file reading module reads the data in the test process configuration file and test standard configuration file corresponding to the device under test, and the software in the main controller uses the above data to control the test execution module to complete the automatic test process of the device under test and determine the test results.

8. The EMU maintenance and testing system based on a microcomputer network system according to claim 6 is characterized by: The test process execution module uses the test process data and the test standard data to control the operation of each device in the system, read the data returned by each device, and complete the entire test process of the device under test.

9. The EMU maintenance and testing system based on a microcomputer network system according to claim 6 is characterized by: The test result report generation module outputs the test result of the device under test obtained by the test process execution module to an Excel file according to a pre-defined format, and saves the Excel file on the local hard disk of the controller.

10. The EMU maintenance and testing system based on a microcomputer network system according to claim 6 is characterized in that: The system monitoring and error handling module monitors whether the working status of each device in the platform is normal, and monitors whether the input and output electrical signals are within the allowable range. If the tooling equipment is abnormal or the input and output electrical signals exceed the allowable range, the module automatically stops the platform operation and reports an error or alarm to the operator through the human-computer interaction interface.

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