A digital debugging instrument and debugging method for a single vehicle of Fuxing EMU

Abstract

The present invention provides a single-vehicle digital debugging instrument for Fuxing EMU and a debugging method thereof, wherein the debugging instrument includes a main device and an auxiliary device. The main device is connected to the multifunctional vehicle bus of the single-vehicle vehicle, and is used to simulate the central control unit of the Fuxing EMU, establish a communication environment with the single vehicle, perform two-way data communication, perform logic control and data processing on the single-vehicle debugging test process, and perform process control and digital display on the single-vehicle test; the auxiliary device is connected to the single-vehicle terminal box, is connected to the main device by wireless, communicates with the main device and provides status feedback, and is used to construct a specific single-vehicle test loop; through the use of the Fuxing single-vehicle digital debugging instrument and the debugging method thereof, a communication network and a single-vehicle test loop can be established for the single vehicle of the Fuxing EMU, and the functions of the single-vehicle equipment can be fully verified, providing necessary equipment support for the disassembly and maintenance of the Fuxing EMU.

Description

Technical Field

[0001] The present invention relates to the technical field of EMUs, and in particular to a single-vehicle digital debugging instrument for a Fuxing EMU and a debugging method thereof. Background Art

[0002] At present, the maintenance of domestic EMUs is mainly divided into two modes: whole train frame maintenance and disassembly single car maintenance. As a new type of high-speed EMU product independently developed by my country, the Fuxing EMU has many differences in vehicle structure, process standards, communication protocols and network control from the previous "Harmony". In the disassembly single car maintenance and debugging mode, there are many technical bottlenecks such as the inability to establish the train communication network and single car test loop, and the inability to verify the vehicle equipment function. There are no supporting equipment and maintenance processes available, so the whole train frame maintenance can only be carried out without destroying the overall network environment of the train, and more flexible disassembly single car maintenance is not possible.

[0003] Therefore, the above-mentioned prior art problems have become difficult problems that need to be solved urgently by technicians in this field. Summary of the invention

[0004] In view of the above-mentioned problems existing in the prior art, a digital debugging instrument and a debugging method for a single vehicle of a Fuxing EMU are provided to realize the single vehicle maintenance mode of the Fuxing EMU.

[0005] The specific technical solutions are as follows:

[0006] The present invention provides a single-vehicle digital debugging instrument for Fuxing EMUs, which includes: a main device and an auxiliary device; DC110 and AC380V output by an external power supply cabinet are connected to a test single-vehicle power supply busbar through a cable to provide a basic power supply for a single-vehicle digital debugging instrument for Fuxing EMUs and other single-vehicle test equipment; the main device is connected to an MVB debugging interface of a single vehicle through an MVB data cable, and a communication link is established with the single vehicle to simulate a central control unit of the Fuxing EMU, control and monitor single-vehicle equipment, and perform single-vehicle debugging test tasks; the auxiliary device is composed of two identical devices, an auxiliary device 3-1 and an auxiliary device 3-2, which are implemented together during use, the auxiliary device 3-1 is connected to an I-end single-vehicle terminal box, and the auxiliary device 3-2 is connected to an II-end single-vehicle terminal box, which are respectively connected to the main device through wireless to jointly execute the establishment of a single-vehicle specific test loop;

[0007] The main equipment includes a main equipment power module, a wireless transmission module, a central control module, a human-computer interaction module, an MVB communication module, a data processing module, a communication conversion module, and a main equipment interface module, which are used to simulate the central control unit of the Fuxing EMU, connect to the multifunctional vehicle bus of a single vehicle, establish a communication environment with a single vehicle, conduct two-way data communication with a single vehicle, perform logic control and data processing on the single vehicle debugging test process, and perform process control and digital display on the single vehicle test;

[0008] Auxiliary equipment, including auxiliary equipment power module, wireless communication module, MCU module, relay module, auxiliary equipment interface module, is used to build a specific single-vehicle test loop, connected to the single-vehicle terminal box, and connected to the main equipment via wireless for communication and status feedback.

[0009] The main equipment power supply module outputs DC12V, DC5V, and DC3.3V power through the DC-DC conversion module to provide power for the wireless transmission module, the central control module, the human-computer interaction module, the MVB communication module, the data processing module, and the communication conversion module; the wireless transmission module is used for bidirectional data transmission with the auxiliary equipment; the central control module is connected to the wireless transmission module, the human-computer interaction module, and the communication conversion module through a data line for data processing and logic control; the human-computer interaction module interacts with the operator through a graphical operation interface and digital data; the MVB communication module is connected to the main equipment interface module for collecting vehicle status data, issuing equipment control instruction data, and interacting with the vehicle in real-time MVB data; the data processing module is connected to the MVB communication module and the communication conversion module through a data line for decoding and processing MVB data; the communication conversion module is connected to the central control module for communication conversion between uplink and downlink MVB data and RS232 data; the main equipment interface module is composed of two redundant RS232 interfaces for connecting and interacting with the MVB interface of the vehicle.

[0010] The auxiliary equipment power supply module outputs DC12V and DC5V power through the DC-DC module to provide power for the wireless communication module, MCU module and relay module; the wireless communication module is connected to the main equipment through wireless, and is used to conduct two-way data communication with the main equipment, transmit control instructions in real time, and feedback status data; the MCU module is connected to the wireless communication module through a data line, processes the data received by the wireless communication module, and performs logical control downward; the relay module is connected to the MCU module through a cable, and is used to execute the control instructions of the MCU module and build a test loop for a specific single-vehicle debugging test project; the auxiliary equipment interface module is connected to the relay module at one end and to the harting socket of the vehicle terminal box at the other end for access to a single vehicle.

[0011] The present invention also provides a single-vehicle digital debugging method for Fuxing EMUs, which is applied to the above-mentioned single-vehicle digital debugging instrument for Fuxing EMUs. The single-vehicle digital debugging method for Fuxing EMUs includes a process of connecting the debugging instrument to a single vehicle, a process of constructing a single-vehicle equipment test loop, and a digital programmed test process:

[0012] The process of connecting the debugging instrument to a bicycle includes the following steps:

[0013] Step S10, connecting an external power supply cabinet via a cable to provide a DC110V power supply to the previously interrupted single-vehicle vehicle power bus, and providing a basic power supply for a Fuxing EMU single-vehicle digital debugging instrument and other single-vehicle test equipment via the vehicle power supply bus;

[0014] Step S11, two auxiliary devices of the debugging instrument are respectively installed in the terminal boxes at both ends of the single vehicle, wherein the auxiliary device interface module of the auxiliary device 3-1 is connected to the single vehicle terminal box at the I end, and the auxiliary device interface module of the auxiliary device 3-2 is connected to the single vehicle terminal box at the II end, and the wireless function of the wireless communication module is turned on;

[0015] Step S12: The main device is connected to the MVB debugging interface of the bicycle via the MVB data cable. After the main device enters the system, it is connected to all auxiliary devices via wireless.

[0016] The process of constructing the single-vehicle equipment test loop includes the following steps:

[0017] Step S21, the debugging operator selects the required single-vehicle equipment debugging test item on the main device of the debugging instrument, and the central control module determines whether a loop needs to be built for the single-vehicle equipment test. If it is a direct single-vehicle equipment test, step S22 is executed; if it is a loop single-vehicle equipment test, step S23 is executed;

[0018] Step S22, the main device of the single-vehicle digital debugging instrument sends direct single-vehicle equipment function test instruction data, the network contact I-1 or network contact I-2 of the single-vehicle vehicle is closed, the coil of the direct single-vehicle equipment control relay KM-I is energized, the contact of the direct single-vehicle equipment control relay KM-I is closed, and the direct single-vehicle equipment connected in series with it works;

[0019] Step S23, the central control module sends a loop type single-vehicle equipment test loop construction instruction to the auxiliary device through the wireless transmission module;

[0020] Step S24, after the auxiliary device receives the loop construction instruction through its own wireless transmission module, it sends a relay closing instruction to the relay module through the internal MCU module, and the relay module executes the loop construction action. The relay module contacts 1 and 2 of the auxiliary device are closed, and the DC110V of the external power supply forms a power closed loop through contacts 1 and 2, so that the loop relay KM coil of the single vehicle is energized, and the loop relay KM contact is closed. At this point, the loop condition of the loop-type single vehicle equipment test is completed;

[0021] Step S25, the main device of the single-vehicle digital debugging instrument sends the loop-type single-vehicle equipment function test instruction data, the network contact II-1 or the network contact II-2 of the single-vehicle vehicle is closed, the coil of the loop-type single-vehicle equipment control relay KM-II is energized, the contact of the loop-type single-vehicle equipment control relay KM-II is closed, and the loop-type single-vehicle equipment connected in series with it works;

[0022] The digital programmed test process comprises the following steps:

[0023] Step S31: The debugging operator can select preset test items on the debugging instrument main device as needed, and perform programmed batch automatic tests according to the set debugging process program;

[0024] Step S32, and send the status and parameter data of the test equipment to the central control module in real time. The central control module compares the test parameters with the standard data to determine whether the test is qualified, and sends the test results to the human-computer interaction module of the debugger main device, and generates digital reports and detailed data parameters on the human-computer interaction module.

[0025] The beneficial effects of the present invention are: providing a single-car digital debugging instrument and debugging method for Fuxing EMUs, which solves multiple technical bottlenecks in the single-car disassembly, maintenance and debugging mode of Fuxing EMUs, such as the inability to establish a train communication network and a single-car test loop, the inability to verify the functions of vehicle equipment, and the lack of supporting equipment. By simulating the central control unit of the Fuxing EMU, building a test loop, process control and digital debugging, the efficient implementation of the disassembly and maintenance mode of the Fuxing EMU is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The embodiments of the present invention will be described more fully with reference to the attached drawings. However, the attached drawings are only used for illustration and description and are not to be construed as limiting the scope of the present invention.

[0027] FIG1 is a schematic diagram of the use and connection of a digital debugging instrument for a single vehicle of a Fuxing EMU;

[0028] FIG2 is a schematic diagram of the structure of the main equipment of a single-vehicle digital debugging instrument for Fuxing EMUs;

[0029] FIG3 is a schematic diagram of the structure of an auxiliary device of a single-vehicle digital debugging instrument for Fuxing EMUs;

[0030] FIG4 is a schematic diagram of a method for digital debugging of a single Fuxing EMU;

[0031] FIG5 is a schematic diagram of a direct single-vehicle equipment test method for a single-vehicle digital debugging method of a Fuxing EMU;

[0032] Figure 6 is a schematic diagram of a loop-type single-vehicle equipment test method for a single-vehicle digital debugging method for the Fuxing EMU. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0035] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0036] In one embodiment, a single-vehicle digital debugging instrument for Fuxing EMU includes: a main device 2 and an auxiliary device 3; the DC110 and AC380V output by the external power supply cabinet 1 are connected to the power supply bus of the test vehicle through a cable to provide a basic power supply for the single-vehicle digital debugging instrument for Fuxing EMU and other single-vehicle test equipment; the main device 2 is connected to the MVB debugging interface 6 of the single vehicle through the MVB data cable, and establishes a communication link with the single vehicle to simulate the central control unit of the Fuxing EMU, control and monitor the single-vehicle equipment, and perform single-vehicle debugging test tasks; the auxiliary device 3 is composed of two identical devices, auxiliary device 3-1 and auxiliary device 3-2, which are implemented together during use, the auxiliary device 3-1 is connected to the single-vehicle terminal box 4 at the I end, and the auxiliary device 3-2 is connected to the single-vehicle terminal box 5 at the II end, which are respectively connected to the main device 2 through wireless to jointly execute the establishment of a single-vehicle specific test loop;

[0037] Main device 2, including main device power module 201, wireless transmission module 202, central control module 203, human-computer interaction module 204, MVB communication module 205, data processing module 206, communication conversion module 207, main device interface module 208, used to simulate the central control unit of Fuxing EMU, connect with the multifunctional vehicle bus of a single vehicle, establish a communication environment with a single vehicle, perform two-way data communication with a single vehicle, perform logic control and data processing on the single vehicle debugging test process, and perform process control and digital display on the single vehicle test;

[0038] The auxiliary device 3, including an auxiliary device power module 301, a wireless communication module 302, an MCU module 303, a relay module 304, and an auxiliary device interface module 305, is used to build a specific single-vehicle test loop, connected to the single-vehicle terminal boxes 4 and 5, and connected to the main device 2 via wireless for communication and status feedback.

[0039] In one embodiment, the main device power supply module 201 outputs DC12V, DC5V, and DC3.3V power through a DC-DC conversion module to provide power for a wireless transmission module 202, a central control module 203, a human-computer interaction module 204, an MVB communication module 205, a data processing module 206, and a communication conversion module 207; the wireless transmission module 202 is used for bidirectional data transmission with the auxiliary device 3; the central control module 203 is connected to the wireless transmission module 202, the human-computer interaction module 204, and the communication conversion module 207 through a data line for data processing and logic control; the human-computer interaction module 204 is connected to the auxiliary device 3 through a graphical operation interface The surface and digital data can interact with the operator; the MVB communication module 205 is connected to the main device interface module 208, and is used to collect vehicle status data, issue equipment control instruction data, and interact with the vehicle in real-time MVB data; the data processing module 206 is connected to the MVB communication module 205 and the communication conversion module 207 through a data line, and is used for decoding and processing MVB data; the communication conversion module 207 is connected to the central control module 203, and is used for communication conversion between uplink and downlink MVB data and RS232 data; the main device interface module 208 is composed of two redundant RS232 interfaces, which are used to connect and interact with the MVB interface of the vehicle.

[0040] In one embodiment, the auxiliary device power supply module 301 outputs DC12V and DC5V power through a DC-DC module to provide power for the wireless communication module 302, the MCU module 303, and the relay module 304; the wireless communication module 302 is wirelessly connected to the main device 2, and is used to perform two-way data communication with the main device 2, transmit control instructions in real time, and feedback status data; the MCU module 303 is connected to the wireless communication module 302 through a data line, processes the data received by the wireless communication module 302, and performs logic control downward; the relay module 304 is connected to the MCU module 303 through a cable, and is used to execute the control instructions of the MCU module 303 and construct a test loop for a specific single-vehicle debugging test project; the auxiliary device interface module 305 is connected to the relay module 304 at one end and to the harting socket of the vehicle terminal box at the other end for access to a single vehicle.

[0041] In one embodiment, a method for digital debugging of a single vehicle of a Fuxing EMU is provided, which is applied to the above-mentioned digital debugging instrument for a single vehicle of a Fuxing EMU. The method for digital debugging of a single vehicle of a Fuxing EMU includes a process of connecting the debugging instrument to a single vehicle, a process of constructing a test loop for the single vehicle equipment, and a digital programmed test process.

[0042] In one embodiment, the digital debugging method for a single vehicle of the Fuxing EMU is as follows: the debugging operator selects the required single vehicle equipment debugging project on the human-computer interaction module 204 of the debugging instrument, and can also check the preset test project as needed, and perform programmed batch tests according to the set debugging process program; the main equipment automatically determines the type of debugging project. If it is a direct single vehicle equipment test, such as traction, front window heating and other projects, the central control module 203 issues corresponding test instruction data, and the target single vehicle equipment directly performs the debugging test; if it is a loop-type single vehicle equipment test, such as a pantograph, a main circuit breaker and other projects, the central control module 203 issues a command data for establishing a corresponding test loop, the auxiliary equipment 3 executes the corresponding action, and the loop is established. The central control module 203 then issues the corresponding test instruction data, and the target single vehicle equipment performs the debugging test; the status and parameter data of the above two types of single vehicle equipment debugging tests are sent to the central control module 203, which are proofread and compared with the standard status parameter data, and the test is automatically determined to be qualified, and the result is fed back to the human-computer interaction module 202 of the main equipment, and finally a digital debugging test result is generated.

[0043] In one embodiment, the process of connecting the debugging instrument to a bicycle includes the following steps:

[0044] Step S10, connecting the external power supply cabinet 1 via a cable to provide a DC110V power supply to the previously interrupted single-vehicle vehicle power bus, and providing a basic power supply for a Fuxing EMU single-vehicle digital debugging instrument and other single-vehicle test equipment via the vehicle power supply bus;

[0045] Step S11, two auxiliary devices 3-1 and 3-2 of the debugging instrument are respectively installed in the terminal boxes 4 and 5 at both ends of the single vehicle, wherein the auxiliary device interface module 305 of the auxiliary device 3-1 is connected to the single vehicle terminal box 3-1 at the I position, and the auxiliary device interface module 305 of the auxiliary device 3-2 is connected to the single vehicle terminal box 3-2 at the II position, and the wireless function of the wireless communication module 302 is turned on;

[0046] Step S12, the main device 2 is connected to the MVB debugging interface 6 of the bicycle via the MVB data cable. After the main device 2 enters the system, it is connected to all auxiliary devices 3 via wireless.

[0047] In one embodiment, the process of constructing the single-vehicle equipment test loop includes the following steps:

[0048] Step S21, the debugging operator selects the required single-vehicle equipment debugging test item on the debugging instrument main device 2, and the central control module 203 determines whether a loop needs to be built for the single-vehicle equipment test. If it is a direct single-vehicle equipment test, step S22 is executed; if it is a loop single-vehicle equipment test, step S23 is executed;

[0049] Step S22, the main device 2 of the single-vehicle digital debugging instrument sends direct single-vehicle equipment function test instruction data, the network contact I-1 or network contact I-2 of the single-vehicle vehicle is closed, the coil of the direct single-vehicle equipment control relay KM-I is energized, the contact of the direct single-vehicle equipment control relay KM-I is closed, and the direct single-vehicle equipment connected in series with it works;

[0050] Step S23, the central control module sends a loop type single-vehicle equipment test loop construction instruction to the auxiliary device through the wireless transmission module;

[0051] Step S24, after the auxiliary device 3 receives the loop construction instruction through its own wireless transmission module, it sends a relay closing instruction to the relay module 304 through the internal MCU module 303, and the relay module 304 executes the loop construction action. The contact 1 and contact 2 of the relay module 304 of the auxiliary device 3 are closed, and the DC110V of the external power supply forms a power closed loop through the contact 1 and contact 2, so that the loop relay KM12 coil of the single vehicle is energized, and the loop relay KM12 contact is closed. At this point, the loop condition of the loop-type single vehicle equipment test is completed;

[0052] Step S25, the main device of the single-vehicle digital debugging instrument sends the loop-type single-vehicle equipment functional test instruction data, the network contact II-1 or network contact II-2 of the single-vehicle vehicle is closed, the loop-type single-vehicle equipment control relay KM-II coil is energized, the loop-type single-vehicle equipment control relay KM-II contact is closed, and the loop-type single-vehicle equipment connected in series with it works.

[0053] In one embodiment, the digital programmed test process includes the following steps:

[0054] Step S31: The debugging operator can select preset test items on the debugging instrument main device as needed, and perform programmed batch automatic tests according to the set debugging process program;

[0055] Step S32, and send the status and parameter data of the test equipment to the central control module 203 in real time. The central control module 203 compares the test parameters with the standard data to determine whether the test is qualified, and sends the test results to the human-computer interaction module 204 of the debugger main device, and generates digital reports and detailed data parameters on the human-computer interaction module 204.

[0056] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A digital debugging instrument for a single vehicle of Fuxing EMU, characterized in that: include: Main equipment and auxiliary equipment; The DC110 and AC380V output by the external power supply cabinet are connected to the power supply bus of the test vehicle through cables, providing basic power for a single-vehicle digital debugging instrument for Fuxing EMUs and other single-vehicle test equipment; the main equipment is connected to the MVB debugging interface of the single vehicle through the MVB data cable, and establishes a communication link with the single vehicle to simulate the central control unit of the Fuxing EMU, control and monitor the single-vehicle equipment, and perform single-vehicle debugging test tasks; The auxiliary equipment consists of two identical devices, auxiliary equipment 3-1 and auxiliary equipment 3-2. During operation, auxiliary equipment 3-1 and auxiliary equipment 3-2 are used together. Auxiliary equipment 3-1 is connected to the bicycle terminal box at the I end, and auxiliary equipment 3-2 is connected to the bicycle terminal box at the II end. They are connected to the main equipment wirelessly to jointly establish a bicycle-specific test loop. The main equipment includes a main equipment power module, a wireless transmission module, a central control module, a human-computer interaction module, an MVB communication module, a data processing module, a communication conversion module, and a main equipment interface module, which are used to simulate the central control unit of the Fuxing EMU, connect to the multifunctional vehicle bus of a single vehicle, establish a communication environment with a single vehicle, conduct two-way data communication with a single vehicle, perform logic control and data processing on the single vehicle debugging test process, and perform process control and digital display on the single vehicle test; Auxiliary equipment, including auxiliary equipment power module, wireless communication module, MCU module, relay module, auxiliary equipment interface module, is used to build a specific single-vehicle test loop, connected to the single-vehicle terminal box, and connected to the main equipment via wireless for communication and status feedback.

2. According to the digital debugging instrument for a Fuxing EMU single vehicle according to claim 1, the main equipment power supply module outputs DC12V, DC5V, and DC3.3V power through the DC-DC conversion module to provide power for the wireless transmission module, the central control module, the human-computer interaction module, the MVB communication module, the data processing module, and the communication conversion module; the wireless transmission module is used for bidirectional data transmission with the auxiliary equipment; the central control module is connected to the wireless transmission module, the human-computer interaction module, and the communication conversion module through a data line for data processing and logic control; the human-computer interaction module is connected to the wireless transmission module, the human-computer interaction module, and the communication conversion module through a graphical operation The operation interface and digital data interact with the operator; the MVB communication module is connected to the main device interface module, and is used to collect vehicle status data, issue equipment control instruction data, and interact with the vehicle in real-time MVB data; the data processing module is connected to the MVB communication module and the communication conversion module through a data line, and is used for decoding and processing MVB data; the communication conversion module is connected to the central control module, and is used for communication conversion between uplink and downlink MVB data and RS232 data; the main device interface module is composed of two redundant RS232 interfaces, and is used for connecting and interacting with the vehicle's MVB interface.

3. According to the single-vehicle digital debugging instrument of Fuxing EMU in claim 1, the auxiliary equipment power supply module outputs DC12V and DC5V power through the DC-DC module to provide power for the wireless communication module, MCU module and relay module; The wireless communication module is connected to the main device via wireless, and is used to perform two-way data communication with the main device, transmit control instructions in real time, and feedback status data; the MCU module is connected to the wireless communication module via a data line, processes the data received by the wireless communication module, and performs logic control downward; the relay module is connected to the MCU module via a cable, and is used to execute the control instructions of the MCU module and construct a test loop for a specific single-vehicle debugging test project; The auxiliary equipment interface module is connected to the relay module at one end and to the harting socket of the vehicle terminal box at the other end for accessing the single vehicle.

4. A single-vehicle digital debugging method for Fuxing EMU, characterized in that: A single-vehicle digital debugging instrument for Fuxing EMUs as described in any one of claims 1 to 3 above, wherein the single-vehicle digital debugging method for Fuxing EMUs includes a process of connecting the debugging instrument to a single vehicle, a process of constructing a single-vehicle equipment test loop, and a digital programmed test process: The process of connecting the debugging instrument to a bicycle includes the following steps: Step S10, connecting an external power supply cabinet via a cable to provide a DC110V power supply to the previously interrupted single-vehicle vehicle power bus, and providing a basic power supply for a Fuxing EMU single-vehicle digital debugging instrument and other single-vehicle test equipment via the vehicle power supply bus; Step S11, two auxiliary devices of the debugging instrument are respectively installed in the terminal boxes at both ends of the single vehicle, wherein the auxiliary device interface module of the auxiliary device 3-1 is connected to the single vehicle terminal box at the I end, and the auxiliary device interface module of the auxiliary device 3-2 is connected to the single vehicle terminal box at the II end, and the wireless function of the wireless communication module is turned on; Step S12: The main device is connected to the MVB debugging interface of the bicycle via the MVB data cable. After the main device enters the system, it is connected to all auxiliary devices via wireless. The process of constructing the single-vehicle equipment test loop includes the following steps: Step S21, the debugging operator selects the required single-vehicle equipment debugging test item on the main device of the debugging instrument, and the central control module determines whether a loop needs to be built for the single-vehicle equipment test. If it is a direct single-vehicle equipment test, step S22 is executed; if it is a loop single-vehicle equipment test, step S23 is executed; Step S22, the main device of the single-vehicle digital debugging instrument sends direct single-vehicle equipment function test instruction data, the network contact I-1 or network contact I-2 of the single-vehicle vehicle is closed, the coil of the direct single-vehicle equipment control relay KM-I is energized, the contact of the direct single-vehicle equipment control relay KM-I is closed, and the direct single-vehicle equipment connected in series with it works; Step S23, the central control module sends a loop type single-vehicle equipment test loop construction instruction to the auxiliary device through the wireless transmission module; Step S24, after the auxiliary device receives the loop construction instruction through its own wireless transmission module, it sends a relay closing instruction to the relay module through the internal MCU module, and the relay module executes the loop construction action. The relay module contacts 1 and 2 of the auxiliary device are closed, and the DC110V of the external power supply forms a power closed loop through contacts 1 and 2, so that the loop relay KM coil of the single vehicle is energized, and the loop relay KM contact is closed. At this point, the loop condition of the loop-type single vehicle equipment test is completed; Step S25, the main device of the single-vehicle digital debugging instrument sends the loop-type single-vehicle equipment function test instruction data, the network contact II-1 or the network contact II-2 of the single-vehicle vehicle is closed, the coil of the loop-type single-vehicle equipment control relay KM-II is energized, the contact of the loop-type single-vehicle equipment control relay KM-II is closed, and the loop-type single-vehicle equipment connected in series with it works; The digital programmed test process comprises the following steps: Step S31: The debugging operator can select preset test items on the debugging instrument main device as needed, and perform programmed batch automatic tests according to the set debugging process program; Step S32, and send the status and parameter data of the test equipment to the central control module in real time. The central control module compares the test parameters with the standard data to determine whether the test is qualified, and sends the test results to the human-computer interaction module of the debugger main device, and generates digital reports and detailed data parameters on the human-computer interaction module.

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