System for performing finished vehicle offline detection based on finished vehicle communication protocol and working method thereof

Abstract

The invention discloses a system for carrying out finished automobile offline detection based on a finished automobile communication protocol and a working method thereof, the system comprises an EOL diagnostic instrument and an EOL upper computer, and the EOL diagnostic instrument obtains finished automobile CAN data through a diagnosis interface on a finished automobile and sends the finished automobile CAN data to the EOL upper computer in a wireless mode. And the EOL upper computer completes complete vehicle VIN writing and verification, controller software number comparison and flashing, and complete vehicle part parameter and state verification according to various parameter index requirements of a complete vehicle configuration file and a working process of off-line electric detection, automatically completes complete vehicle off-line detection and archives test data. According to the invention, through automatic electric test, the workload of related testers in the off-line process of the whole vehicle can be effectively reduced; the production efficiency is improved, and the controllability of the off-line electric detection process of the whole vehicle is ensured. Meanwhile, it can be effectively guaranteed that products are exported abroad, the whole vehicle assembly quality can be effectively detected, and technical training and time investment of production enterprises on foreign offline detection personnel are reduced.

Description

Technical Field

[0001] The present invention relates to the field of whole vehicle testing, and in particular to a system for performing whole vehicle offline testing based on a whole vehicle communication protocol and a working method thereof. Background Art

[0002] Compared with traditional fuel motorcycles, electric motorcycles have more controllers (BMS, MCU, TBOX, instruments and chargers). In order to ensure the quality of the whole vehicle, the parameters, software and hardware version numbers and fault status of each controller need to be confirmed through CAN analysis tools and the host computer. The confirmation process involves many technical parameters of the controller. Different professions are involved in the vehicle development process. When confirming the whole vehicle on site, different professionals are required to participate. The efficiency of the vehicle offline confirmation process is low, which seriously affects the production rhythm of the whole vehicle and restricts the output.

[0003] At the same time, for some exported models, after the parts are sent to the customer's destination, they are produced and assembled on the customer's site. At present, foreign countries lack in-depth understanding and knowledge of the development process of electric motorcycles, and there are no mature technicians and supporting testing tools. It is impossible to confirm the status of parts when the electric motorcycle is off the assembly line, and the manufacturer needs to send technicians to conduct on-site training and guidance. This increases the manpower investment of the vehicle manufacturer in the early technical support. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is: how to provide a system and a working method for off-line testing of whole vehicles based on the whole vehicle communication protocol, which can effectively improve the efficiency of off-line testing of whole vehicles and reduce the manpower investment in technical support required for off-line testing of whole vehicles for export reassembly.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: The system for performing off-line detection of a whole vehicle based on a whole vehicle communication protocol comprises an EOL diagnostic instrument and an EOL host computer. The EOL diagnostic instrument is used for bidirectional communication connection with a diagnostic interface on the whole vehicle and bidirectional wireless communication connection with the EOL host computer. The EOL diagnostic instrument obtains whole vehicle CAN data through the diagnostic interface on the whole vehicle and sends it to the EOL host computer in a wireless manner. The EOL host computer comprises a test module and an MES module. The test module completes the writing and verification of the whole vehicle VIN, the comparison and flashing of the controller software number, and the verification of the parameters and status of the whole vehicle parts according to the various parameter index requirements of the whole vehicle configuration file and the workflow of the off-line electrical inspection, automatically completes the off-line detection of the whole vehicle and archives the test data.

[0006] A working method of a system for performing off-line vehicle testing based on the vehicle communication protocol as described above, wherein the EOL diagnostic instrument reads the vehicle CAN data through the diagnostic interface on the vehicle, and sends the read vehicle CAN data to the EOL host computer through wireless communication. The EOL host computer parses the vehicle CAN data, completes the vehicle off-line testing according to the vehicle off-line electrical inspection process, and outputs the test results.

[0007] Preferably, the working method comprises the following steps: Step 1) The EOL diagnostic instrument is connected to the diagnostic interface on the vehicle; Step 2) The vehicle is powered on, and the EOL diagnostic instrument sends a WIFI hotspot; Step 3) The EOL host computer imports the vehicle configuration file and connects to the WIFI hotspot of the EOL diagnostic instrument; Step 4) Enter the vehicle VIN; Step 5) The EOL host computer establishes a communication connection with the vehicle; Step 6) The EOL host computer performs off-line testing on the vehicle and outputs the test results; Step 7) End.

[0008] Preferably, in step 2), if the vehicle is powered on successfully, the diagnostic interface of the vehicle is powered, the EOL diagnostic instrument module is powered and sends a WIFI hotspot, and step 3 is executed); if the vehicle fails to be powered on, the diagnostic interface of the vehicle is not powered, the EOL diagnostic instrument module does not send a WIFI hotspot, and step 7 is executed).

[0009] Preferably, step 6) includes the following steps: Step 6.1) Detect the software and hardware versions of each controller and match them with the software version released during vehicle mass production. If the match is successful, execute step 6.3). If the match fails, execute step 6.2); Step 6.2) Flash the software according to the flash protocol defined by the controller, and match it again with the software version released during vehicle mass production after flashing. If the match is successful, execute step 6.3). If the match fails, output the flash failure result and execute step 6.7); Step 6.3) The EOL host computer writes the VIN into the vehicle controller; Step 6.4) Determine whether the writing is successful. If the writing is successful, execute step 6.5). If the writing fails, output the writing failure result and execute step 6.7); Step 6.5) Determine vehicle parameters and fault status; Step 6.6) Determine whether the relevant parameters of the vehicle are normal according to the vehicle configuration file. If normal, output the normal determination result and execute step 6.7). If abnormal, output the abnormal determination result and execute step 6.7); Step 6.7) Summarize the output results of each step and upload them to the MES module; Step 6.8) Print the vehicle end-of-line inspection results.

[0010] Preferably, the contents of vehicle parameters and fault status determination include: Confirm the status of each component of the vehicle; Identification of fault information of each vehicle controller; Get the vehicle data stream.

[0011] Preferably, the method for confirming the status of each component of the vehicle is: Read the key parameters of each vehicle controller for comparison. The key parameters of the controller include battery SOC, cell voltage, cell temperature, motor control temperature, speed, torque, operating current, voltage, software and hardware version numbers; Read the key data of the vehicle, including throttle opening, brake status, remaining range, total mileage, and key status.

[0012] Preferably, the method for identifying fault information of each controller of the whole vehicle is: reading the fault level of each controller in real time according to the CAN data of the whole vehicle, and displaying the current fault information in real time.

[0013] Preferably, the method for obtaining the whole vehicle data stream is: reading the component traceability code and parameter status of the whole vehicle through the whole vehicle CAN data, and uploading them to the MES module of the EOL host computer to save the assembly process data of the whole vehicle.

[0014] Preferably, in step 6.3), the EOL host computer writes the VIN into the controller of the whole vehicle, so that the frame number of the whole vehicle is written into the controller of the whole vehicle through the EOL host computer, and the controller of the whole vehicle transmits the frame number of the whole vehicle to the cloud platform through the 4G module to trace the data of the whole vehicle.

[0015] Compared with the prior art, the present invention has the following advantages: 1. When the present invention performs offline testing on the whole vehicle, the EOL diagnostic instrument is connected to the diagnostic interface on the whole vehicle, the whole vehicle CAN data is obtained by the EOL diagnostic instrument, and the obtained whole vehicle CAN data is sent to the EOL host computer through wireless communication. The EOL host computer performs message parsing on the obtained whole vehicle CAN data, automatically completes the offline testing process of the whole vehicle according to the whole vehicle power-off inspection process, and transmits the test results to the MES module for storage and can print out the test results. Therefore, when the present solution performs offline testing on the whole vehicle, it only needs to connect the EOL diagnostic instrument to the diagnostic interface on the whole vehicle, import the whole vehicle configuration file and scan and enter the VIN, and the EOL host computer can automatically complete the offline inspection of the whole vehicle. The entire testing process greatly reduces the workload of the testers and the professional requirements for the testers.

[0016] 2. The present invention can effectively reduce the workload of relevant testers during the vehicle off-line process through automated electrical testing; speed up the production rhythm, improve on-site production efficiency, and ensure that various parameter indicators of the vehicle meet the requirements of the vehicle.

[0017] 3. The present invention provides a complete set of vehicle off-line testing solutions for foreign customers after they produce and assemble the whole vehicle locally, which can effectively ensure that the products are assembled by different assemblers, and the various parameters and indicators of the whole vehicle can meet the requirements of the whole vehicle, thereby reducing the technical support manpower and training investment of the production enterprise.

[0018] 4. The present invention can effectively avoid the possibility of missed detection and misjudgment caused by human detection through system automated electrical detection test, ensure the standardization and process of product offline detection, and improve product competitiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Attached Figure 1 This is a system block diagram of a system for performing off-line vehicle detection based on a vehicle communication protocol according to the present invention; Attached Figure 2 It is a schematic diagram of the working interface of the EOL host computer in the system for performing vehicle offline detection based on the vehicle communication protocol of the present invention; Attached Figure 3 The present invention is a flow chart of the working method of the system for performing off-line detection of a whole vehicle based on the whole vehicle communication protocol. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0021] It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In the description of the present invention, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the invention product is usually placed when used, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In addition, the terms "horizontal", "vertical", etc. do not mean that the components are absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted. In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] As attached Figure 1As shown, a system for performing off-line detection of a whole vehicle based on a whole vehicle communication protocol includes an EOL diagnostic instrument and an EOL host computer. The EOL diagnostic instrument is used for bidirectional communication connection with a diagnostic interface on the whole vehicle, and bidirectional wireless WIFI communication connection with the EOL host computer. The EOL diagnostic instrument obtains the whole vehicle CAN data through the diagnostic interface on the whole vehicle and sends it to the EOL host computer wirelessly. The EOL host computer includes a test module and an MES module. The test module completes the off-line detection of the whole vehicle according to the whole vehicle configuration file, the whole vehicle VIN and the obtained whole vehicle CAN data, and outputs the test results to the MES module for archiving. Specifically, the EOL host computer imports the vehicle configuration file, and uses the message parsing engine to parse the acquired vehicle CAN data to obtain the message description, and then scans the vehicle VIN through a barcode scanner, and compares the software and hardware of each controller on the vehicle with the software version released when the vehicle is mass-produced. If the comparison fails, the controller is flashed and re-compared. If the comparison passes, the VIN is written into the vehicle controller, and then the vehicle is fault-checked. The test results are sent to the MES module for archiving and can be printed out. The working interface diagram of the EOL host computer is as follows Figure 2 shown.

[0023] A working method of a system for performing off-line vehicle testing based on the vehicle communication protocol as described above, wherein the EOL diagnostic instrument reads the vehicle CAN data through the diagnostic interface on the vehicle, and sends the read vehicle CAN data to the EOL host computer through wireless communication. The EOL host computer parses the vehicle CAN data, completes the vehicle off-line testing according to the vehicle off-line electrical inspection process, and outputs the test results.

[0024] In this specific embodiment, as shown in the attached Figure 3 As shown, the working method includes the following steps: Step 1) Connect the EOL diagnostic instrument to the diagnostic interface on the vehicle.

[0025] Step 2) Turn the key to power on the vehicle. If the vehicle is powered on successfully, the diagnostic interface of the vehicle is powered, the EOL diagnostic instrument module is powered and sends a WIFI hotspot, and step 3 is performed; if the vehicle fails to power on, the diagnostic interface of the vehicle is not powered, the EOL diagnostic instrument module does not send a WIFI hotspot, and step 7 is performed.

[0026] Step 3) Open the EOL host computer, import the vehicle configuration file into the EOL host computer, and then connect the EOL host computer to the WIFI hotspot sent by the EOL diagnostic instrument.

[0027] Step 4) Use a barcode scanner to enter the vehicle VIN.

[0028] Step 5) The EOL host computer establishes a communication connection with the vehicle; if the connection fails within the time limit, a connection failure prompt is output and step 6.7 is executed.

[0029] Step 6) The EOL host computer performs off-line testing on the vehicle and outputs the test results.

[0030] Specifically, step 6) includes the following steps: Step 6.1) Detect the software and hardware versions of each controller and match them with the software version released during vehicle mass production. If the match is successful, execute step 6.3). If the match fails, execute step 6.2); Step 6.2) Flash the software according to the flash protocol defined by the controller, and match it again with the software version released during vehicle mass production after flashing. If the match is successful, execute step 6.3). If the match fails, output the flash failure result and execute step 6.7); Step 6.3) The EOL host computer writes the VIN into the vehicle controller; Step 6.4) Determine whether the writing is successful. If the writing is successful, execute step 6.5). If the writing fails, output the writing failure result and execute step 6.7); Step 6.5) Determine the vehicle parameters and fault status; the contents of the vehicle parameters and fault status determination include: Confirm the status of each component of the vehicle; read the key parameters of each controller of the vehicle for comparison. The key parameters of the controller include battery SOC, cell voltage, cell temperature, motor control temperature, speed, torque, operating current, voltage, software and hardware version numbers; Read the key data of the vehicle, including throttle opening, brake status, remaining range, total mileage, and key status.

[0031] Identify fault information of each controller in the vehicle; read the fault level of each controller in real time based on the vehicle CAN data, and display the current fault information in real time.

[0032] Obtain vehicle data stream: Read the vehicle component traceability code and parameter status through the vehicle CAN data, upload it to the MES module of the EOL host computer, and save the vehicle production process data.

[0033] Step 6.6) Determine whether the relevant parameters of the vehicle are normal according to the vehicle configuration file. If normal, output the normal determination result and execute step 6.7). If abnormal, output the abnormal determination result and execute step 6.7); Step 6.7) Summarize the output results of each step and upload them to the MES module; Step 6.8) Print the vehicle end-of-line inspection results.

[0034] Step 7) End.

[0035] Compared with the prior art, the present invention connects the EOL diagnostic instrument to the diagnostic interface on the vehicle when conducting offline testing on the vehicle, uses the EOL diagnostic instrument to obtain the vehicle CAN data, and sends the obtained vehicle CAN data to the EOL host computer through wireless communication. The EOL host computer parses the obtained vehicle CAN data, and automatically completes the offline testing process of the vehicle in combination with the vehicle power-off inspection process, and passes the test results to the MES module for storage and can print out the test results. Therefore, when conducting offline testing on the vehicle, this solution only needs to connect the EOL diagnostic instrument to the diagnostic interface on the vehicle, import the vehicle configuration file and scan and enter the VIN, and the EOL host computer can automatically complete the offline inspection of the vehicle. The entire testing process greatly reduces the workload of testers and the professional requirements for testers.

[0036] The present invention can effectively reduce the workload of relevant testers during the vehicle off-line process through automated electrical inspection and testing; speed up the production rhythm, improve on-site production efficiency, and ensure that various parameter indicators of the vehicle meet the requirements of the vehicle.

[0037] The present invention provides a complete set of vehicle off-line testing solutions for foreign customers after they produce and assemble the whole vehicle locally, which can effectively ensure that the products are assembled by different assemblers and that the various parameter indicators of the whole vehicle can meet the requirements of the whole vehicle, thereby reducing the technical support manpower and training investment of the production enterprise.

[0038] The present invention can effectively avoid the possibility of missed detection and misjudgment caused by human detection through system automated electrical detection test, ensure the standardization and process of product offline detection, and improve product competitiveness.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit the technical solution. Those skilled in the art should understand that those modifications or equivalent substitutions of the technical solution of the present invention that do not depart from the purpose and scope of the technical solution should be included in the scope of the claims of the present invention.

Claims

1. A system for off-line vehicle testing based on vehicle communication protocol, characterized in that: It includes an EOL diagnostic instrument and an EOL host computer. The EOL diagnostic instrument is used for bidirectional communication connection with the diagnostic interface on the whole vehicle, and bidirectional wireless communication connection with the EOL host computer. The EOL diagnostic instrument obtains the whole vehicle CAN data through the diagnostic interface on the whole vehicle and sends it to the EOL host computer wirelessly. The EOL host computer includes a test module and an MES module. The test module performs controller software version comparison and software flashing, vehicle VIN writing and vehicle component status comparison according to the whole vehicle configuration file, automatically completes the whole vehicle offline detection and outputs the test results to the MES module for archiving.

2. A working method of a system for performing vehicle offline detection based on a vehicle communication protocol as claimed in claim 1, characterized in that: The EOL diagnostic instrument reads the vehicle CAN data through the diagnostic interface on the vehicle, and sends the read vehicle CAN data to the EOL host computer through wireless communication. The EOL host computer parses the vehicle CAN data. The EOL host computer completes the vehicle VIN writing and verification, controller software number comparison and flashing, and vehicle component parameter status verification according to the requirements of various parameter indicators of the vehicle configuration file, automatically completes the vehicle off-line inspection and archives the test data.

3. The working method of the system for performing vehicle offline detection based on the vehicle communication protocol according to claim 2 is characterized in that: The working method comprises the following steps: Step 1) The EOL diagnostic instrument is connected to the diagnostic interface on the vehicle; Step 2) The vehicle is powered on, and the EOL diagnostic instrument sends a WIFI hotspot; Step 3) The EOL host computer imports the vehicle configuration file and connects to the WIFI hotspot of the EOL diagnostic instrument; Step 4) Enter the vehicle VIN; Step 5) The EOL host computer establishes a communication connection with the vehicle; Step 6) The EOL host computer performs off-line testing on the vehicle and outputs the test results; Step 7) End.

4. The working method of the system for performing vehicle offline detection based on the vehicle communication protocol according to claim 3 is characterized in that: In step 2), if the vehicle is powered on successfully, the diagnostic interface of the vehicle is powered, the EOL diagnostic instrument module is powered and sends a WIFI hotspot, and step 3 is executed); if the vehicle fails to be powered on, the diagnostic interface of the vehicle is not powered, the EOL diagnostic instrument module does not send a WIFI hotspot, and step 7 is executed.

5. The working method of the system for performing vehicle offline detection based on the vehicle communication protocol according to claim 4 is characterized in that: Step 6) includes the following steps: Step 6.1) Detect the software and hardware versions of each controller and match them with the software version released during vehicle mass production. If the match is successful, execute step 6.3). If the match fails, execute step 6.2); Step 6.2) Flash the software according to the flash protocol defined by the controller, and match it again with the software version released during vehicle mass production after flashing. If the match is successful, execute step 6.3). If the match fails, output the flash failure result and execute step 6.7); Step 6.3) The EOL host computer writes the VIN into the vehicle controller; Step 6.4) Determine whether the writing is successful. If the writing is successful, execute step 6.5). If the writing fails, output the writing failure result and execute step 6.7); Step 6.5) Determine vehicle parameters and fault status; Step 6.6) Determine whether the relevant parameters of the vehicle are normal according to the vehicle configuration file. If normal, output the normal determination result and execute step 6.7). If abnormal, output the abnormal determination result and execute step 6.7); Step 6.7) Summarize the output results of each step and upload them to the MES module; Step 6.8) Print the vehicle end-of-line inspection results.

6. The working method of the system for performing vehicle offline detection based on the vehicle communication protocol according to claim 5 is characterized in that: The contents of vehicle parameters and fault status determination include: Confirm the status of each component of the vehicle; Identification of fault information of each controller of the vehicle; Get the vehicle data stream.

7. The working method of the system for performing vehicle offline detection based on the vehicle communication protocol according to claim 6 is characterized in that: The method for confirming the status of each component of the vehicle is as follows: Read the key parameters of each vehicle controller for comparison. The key parameters of the controller include battery SOC, cell voltage, cell temperature, motor control temperature, speed, torque, operating current, voltage, software and hardware version numbers; Read the key data of the vehicle, including throttle opening, brake status, remaining range, total mileage, and key status.

8. The working method of the system for performing vehicle offline detection based on the vehicle communication protocol according to claim 6 is characterized in that: The method for identifying the fault information of each controller of the whole vehicle is: reading the fault level of each controller in real time according to the CAN data of the whole vehicle, and displaying the current fault information in real time.

9. The working method of the system for performing vehicle offline detection based on the vehicle communication protocol according to claim 6 is characterized in that: The method for obtaining the vehicle data stream is: read the vehicle component traceability code and parameter status through the vehicle CAN data, upload it to the MES module of the EOL host computer, and save the vehicle production process data.

10. The working method of the system for performing vehicle offline detection based on the vehicle communication protocol according to claim 5, characterized in that: In step 6.3), the EOL host computer writes the VIN into the controller of the whole vehicle, so that the frame number of the whole vehicle is written into the controller of the whole vehicle through the EOL host computer, and the controller of the whole vehicle uploads the VIN of the whole vehicle to the cloud platform through the 4G module to trace the data of the whole vehicle.

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