A vehicle fault intelligent diagnosis and repair system based on an in-vehicle display screen

Abstract

This invention relates to the field of intelligent cockpit technology, specifically to a vehicle fault intelligent diagnosis and repair system based on an in-vehicle display screen. The system includes a data acquisition module, an intelligent diagnosis module, a scheduled repair module, and a work order processing system. After the vehicle is powered on, vehicle attribute information is synchronized through the vehicle management system, and the system automatically caches updated fault code details to the APP. Vehicle fault messages are collected via the CAN bus and compared with information in the fault code database to obtain and display the corresponding fault description and repair suggestions. Users can choose to report fault information to the repair system to schedule repairs. The system automatically assigns a work order to the corresponding service station, awaiting contact from system personnel for fault handling. The work order processing platform effectively manages work order creation, allocation, updating, closing, and evaluation operations, continuously optimizing and improving system functions and performance. Token authentication and data encryption tools are used for front-end and back-end transmission to ensure the reliability and security of data transmission.

Description

Technical Field

[0001] This invention relates to the field of intelligent cockpit technology, specifically to a vehicle fault intelligent diagnosis and repair system based on an in-vehicle display screen. Background Technology

[0002] Intelligent devices are a crucial component of modern intelligent vehicles. With the rapid development of automotive human-machine interaction and intelligent connectivity technologies, vehicles need to integrate more and more intelligent hardware devices to enhance the user's driving experience. Furthermore, in-vehicle multimedia displays are gradually becoming standard equipment, offering users intelligent map navigation, intelligent driver assistance, and remote interactive control functions through personalized settings. Software-defined vehicles have become a development trend in intelligent vehicle design. Based on this, vehicle safety performance testing has become particularly important. When a vehicle malfunctions and requires urgent diagnosis, compared to the previous time-consuming and laborious step-by-step inspection of individual components, in-vehicle intelligent diagnostic systems, with their accurate and timely diagnostic guidance and convenient and cost-effective repair reporting, greatly save users' repair time and communication costs. Simultaneously, they can optimize diagnostic strategies based on data obtained from the in-vehicle display, analyze fault types, and provide specific solutions, helping users better understand vehicle fault information, monitor the overall vehicle's driving status, and avoid dangerous incidents.

[0003] Currently, most vehicle diagnostic tools are service station fault diagnosis and repair instruments, mainly meeting the needs of fault code reading, data reading, and ECU electronic control unit rewriting. When a vehicle malfunctions in actual road conditions, it needs to be handled by making an appointment at the nearest service station. This diagnostic and repair method requires service stations to maintain the configuration information of different vehicle models and versions. While it can meet users' daily vehicle diagnostic needs, it is time-consuming, labor-intensive, costly, and inconvenient to manage.

[0004] Therefore, it is essential to provide users with a vehicle fault intelligent diagnosis and repair system based on an in-vehicle display screen. Users can select the nearest service station from the list of nearby service stations on the in-vehicle screen to perform a one-click repair operation, reducing the user's learning cost and meeting user needs. Summary of the Invention

[0005] To address the problems existing in the prior art, the present invention provides a vehicle fault intelligent diagnosis and repair system based on an in-vehicle display screen.

[0006] The technical solution adopted by the present invention to solve its technical problem is: a vehicle fault intelligent diagnosis and repair system based on an in-vehicle display screen, including a data acquisition module, an intelligent diagnosis module, an appointment repair module and a work order processing system;

[0007] The data acquisition module synchronizes vehicle configuration information through the vehicle management system. The in-vehicle display requests the backend server to send fault database information. After the backend server responds, the in-vehicle display synchronizes the latest fault data and caches it in the intelligent diagnostic APP. At the same time, it sends out collection tasks based on the vehicle configuration information.

[0008] The intelligent diagnostic module, as described above, sends the collected electronic device information to the vehicle network bus via CAN messages on the in-vehicle display screen, runs the intelligent diagnostic APP, compares the collected vehicle fault data with the fault code database cached locally, obtains the corresponding fault details and repair suggestions, and displays them.

[0009] The appointment repair module allows users to access the appointment repair page by clicking the one-click repair button on the intelligent diagnostic APP. It obtains information on all nearby service stations based on the vehicle's GPS signal, selects the name of the nearest service station and customizes the service items, modifies the default user name and contact information, and submits the appointment repair work order.

[0010] After a repair work order is submitted via the vehicle-mounted display screen, the work order processing system automatically assigns the work order to the corresponding service station, waiting for system personnel to contact and handle the fault. The work order processing system also automatically tracks the work order status.

[0011] Preferably, the in-vehicle display screen is interconnected with the electronic device via a bus and collects fault data based on vehicle configuration information. The in-vehicle display screen is interconnected with the back-end server via the Internet, and the intelligent diagnostic APP on the in-vehicle display screen accesses the data of the vehicle management system through an interface protocol.

[0012] Preferably, the electronic device includes an on-board controller and several vehicle sensors. The on-board controller sends the vehicle status and other vehicle information acquired by the vehicle sensors to the vehicle network bus via CAN messages.

[0013] Preferably, the vehicle-mounted display screen sends the repair request to the back-end server via a data link. After receiving the request, the back-end server stores the information and responds, then sends it to the vehicle-mounted display screen via the data link. The vehicle-mounted display screen receives and displays the information.

[0014] Preferably, the vehicle display screen requests fault code database information from the backend server, compares the fault codes, and displays the corresponding fault code details and repair suggestions.

[0015] Preferably, the work order processing system includes operations for creating, assigning, updating, closing, and evaluating work orders. A repair work order is created and submitted through the vehicle display screen. After receiving the work order, the work order processing system assigns it to the corresponding service station. According to the content of the work order, the service personnel will contact the user by phone or SMS within a specified time to inform them of the processing status and update the work order status in a timely manner.

[0016] Preferably, the intelligent diagnostic APP includes a fault pop-up window, vehicle self-check, fault details, appointment for repair, expert consultation, and historical records. The fault pop-up window compares the messages corresponding to the fault codes in the fault code library sent by the CAN bus with the fault data cached on the vehicle display screen. When a fault code that requires a pop-up reminder appears on the bus, a pop-up window will pop up to remind the user.

[0017] Preferably, the appointment for repair obtains information on all nearby service stations based on GPS signals and customizes the service items.

[0018] Preferably, the expert consultation is accessed by clicking the "Consult an Expert" button, which leads to the expert consultation page. The user then submits a work order for the expert consultation type to the work order processing system. Simultaneously, the intelligent diagnostic APP displays the phone number of the corresponding regional repair expert, who provides remote assistance.

[0019] The present invention has the following beneficial effects:

[0020] 1) Information is shared between different components of the vehicle via the CAN line. This invention can obtain fault information related to CAN communication by reading messages on the bus, accurately locate the fault phenomenon and type, and provide maintenance suggestions and emergency handling solutions. This invention can effectively improve the accuracy of fault code identification, achieve a 100% success rate of proactive prompting, and achieve a 100% synchronization rate between proactive fault reminders and instrument panel fault displays.

[0021] 2) This invention provides remote expert consultation services, displaying contact information for experts in various marketing areas and different vehicle categories. Users can enable the one-click repair function to select the service station closest to their vehicle and submit an appointment work order to the repair system. The system will process the current work order within a specified time, which can improve the efficiency of users' appointment repairs and save users' time.

[0022] 3) This invention can encrypt vehicle operating parameters and configuration information through front-end and back-end data links to ensure secure and reliable data transmission. At the same time, it can obtain surrounding service stations based on the user's latitude and longitude information to enrich the application display content.

[0023] 4) This invention is based on an in-vehicle display screen and integrates intelligent diagnostics into an Android application. It can be used with only simple configuration for different display screen systems. Attached Figure Description

[0024] Figure 1 This is a flowchart of the present invention.

[0025] Figure 2 This is a structural block diagram of the present invention.

[0026] Figure 3 This is a flowchart of a vehicle-mounted display screen.

[0027] Figure 4 This is a block diagram of the intelligent diagnostic APP function modules on the vehicle display screen. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0029] like Figure 1 As shown, a vehicle fault intelligent diagnosis and repair system based on an in-vehicle display screen mainly includes a data acquisition module, an intelligent diagnosis module, an appointment repair module, and a work order processing system. The platform involved includes a vehicle management system, an in-vehicle display screen, and a back-end server. The in-vehicle display screen and the vehicle management system exchange data via an interface protocol, the back-end server and the in-vehicle display screen are interconnected via the Internet, and the in-vehicle multimedia screen is interconnected with other in-vehicle electronic devices via a bus.

[0030] The data acquisition module synchronizes vehicle configuration information through the vehicle management system. The in-vehicle display requests fault database information from the backend. After the backend responds, the in-vehicle display synchronizes the latest fault data and caches it in the intelligent diagnostic APP. At the same time, it issues collection tasks based on the vehicle configuration information.

[0031] The intelligent diagnostic module, based on the information collected from the electronic devices, sends it to the vehicle network bus via CAN messages. The intelligent diagnostic APP runs, compares the collected vehicle fault data with the fault code information cached locally, obtains the corresponding fault details and repair suggestions and displays them, and uploads the data to the backend server.

[0032] In the appointment repair module, users can click the one-click repair button on the smart diagnostic APP to enter the appointment repair page. Based on the vehicle's GPS signal, the system obtains information on all nearby service stations. Users can select the nearest service station and customize the service items. By clicking to modify the default user name and contact information, users can submit a repair order to the service station.

[0033] In the aforementioned work order processing system, after a user submits a repair work order through the in-vehicle multimedia display screen, the back-end server will automatically assign the work order to the corresponding service station, waiting for system personnel to contact the user for fault handling. The system will automatically track the work order status, including creation, assignment, update, closure, and evaluation operations.

[0034] The vehicle electronic equipment includes an on-board controller and several vehicle sensors. The on-board controller sends the vehicle status and other vehicle information obtained by the vehicle sensors to the vehicle network bus via CAN messages. The vehicle sensors include a vehicle speed sensor, an engine speed sensor, an accelerator pedal, a main brake switch, a Tianxingjian on-board terminal, an instrument panel, an engine ECU, and an ABS controller.

[0035] Vehicle configuration information includes engine model, maintenance cycle, mileage, transmission model, retarder model, market segment, vehicle lock status, fuel tank filter, and power steering fluid status.

[0036] The fault code database includes a unique fault identifier, serial number, SPN, FMI, fault description, fault type, diagnostic location, location status, repair suggestions, repair methods, supplier, and vehicle model.

[0037] The fault types are divided into four categories. Category A faults indicate serious faults that may lead to loss of vehicle control or serious accidents, such as brake system faults and steering system faults. Category B faults indicate important faults that may affect driving performance and ride comfort, such as engine faults, transmission faults, and electronic system faults, which require prompt repair. Category C faults are general faults that have a minor impact on vehicle safety and performance, such as headlight faults and in-vehicle mechanical faults. Category D faults indicate warning faults, such as motor overheating and low tire pressure.

[0038] The vehicle display screen is used to listen to bus messages, receive data from other vehicle electronic devices, run the intelligent diagnostic APP, upload application data to the backend server, and receive and display the data.

[0039] The backend server is used to receive the data that needs to be submitted during the use of the intelligent diagnostic application. After processing the data, the backend server will feed back the corresponding data and process to the vehicle display screen for display.

[0040] The vehicle-mounted display screen includes a system Jar package, an intelligent diagnostic application, and a mobile network unit. The system Jar package of the vehicle-mounted display screen is used to receive and forward data on the bus to the intelligent diagnostic application; the intelligent diagnostic application provides users with current fault details and emergency handling solutions in a timely manner based on the collected fault messages; the mobile network unit is used as a channel for network services and uploading and downloading diagnostic application data.

[0041] The point-to-point authentication and pairing process for establishing a data link between the vehicle display screen and the backend server includes:

[0042] The vehicle display screen sends the vehicle's VIN code to the backend server to request login.

[0043] The backend server verifies whether the vehicle's VIN code is valid;

[0044] If so, generate a Token string and send the Token string to the vehicle display screen in JSON format;

[0045] After receiving the JSON data, the vehicle display parses out the Token string and appends the Token string to the request header for use when accessing the interface.

[0046] The backend server receives the request, parses the Token string from the request header, verifies it to be correct, and successfully establishes the data link.

[0047] The intelligent vehicle fault diagnosis method is based on commercial vehicles and diagnoses the entire vehicle. An intelligent diagnosis APP is developed, whose functions include fault pop-up window, vehicle self-check, fault details, appointment for repair, expert consultation, and history record.

[0048] The fault pop-up function compares the corresponding messages of the fault codes in the fault code library sent by the CAN line with the fault data cached on the screen. When a fault code that needs to be reminded appears on the bus, a pop-up window will pop up to remind the user. After closing the pop-up window, the same fault will not be reminded again before the next power-on.

[0049] The vehicle self-check function can be accessed by clicking on the intelligent diagnostics APP and entering the homepage. The application will automatically check for vehicle faults, and the self-check progress will be displayed in the form of a progress bar. When there is a fault in the vehicle, the progress bar will be red, and the fault code details will be displayed on the page. When there is no fault in the vehicle, the progress bar will be green, and the words "Vehicle condition is good" will be displayed.

[0050] The fault details feature includes displaying vehicle fault codes and repair suggestions;

[0051] The scheduled repair function obtains information on all nearby service stations based on GPS signals and allows users to customize service items. Service station information includes service station code, service station name, and current distance. Service items include engine, transmission, chassis, and others.

[0052] The expert consultation function allows users to click the "Consult an Expert" button to enter the expert consultation page. Users can submit an expert consultation work order to the system platform, and the application will display the phone number of the corresponding regional repair expert, who can provide remote assistance.

[0053] The history record function allows users to click on a repair record to enter the repair work order details page, view the specific information of the work order, evaluate the repair, and submit it to the work order processing system.

[0054] The vehicle management system mainly synchronizes vehicle configuration information and issues fault collection tasks based on basic vehicle information. After the vehicle is powered on and the in-vehicle display is turned on, the application will automatically read and parse the fault messages on the CAN line, obtain the corresponding fault parameters, and compare them with the fault data cached on the screen. If they match, a pop-up window will remind the user. After the user clicks on the pop-up window, they will be automatically redirected to the intelligent diagnostic APP, where they can view the fault details and report the fault.

[0055] The work order processing system is based on a backend server and includes operations such as work order creation, allocation, updating, closing, and evaluation. Users create and submit repair work orders through the vehicle display screen. After receiving the work order, the system allocates it to the service station selected by the user. According to the content of the work order, system personnel will contact the user by phone or SMS within a specified time to inform them of the processing status and update the work order status in a timely manner. After the repair is completed, the user can evaluate the service and record it in the work order processing system.

[0056] Example

[0057] like Figure 1 As shown, a vehicle fault intelligent diagnosis method and repair reporting system based on an in-vehicle display screen includes a data acquisition module, an intelligent diagnosis module, an appointment repair reporting module, and a work order processing system.

[0058] The data acquisition module synchronizes vehicle configuration information through the vehicle management system. The in-vehicle display requests fault database information from the backend. After the backend responds, the in-vehicle display synchronizes the latest fault data and caches it in the intelligent diagnostic APP. At the same time, it issues collection tasks based on the vehicle configuration information.

[0059] The intelligent diagnostic module, through the vehicle multimedia display screen, sends the collected electronic device information to the vehicle network bus via CAN messages. It runs the intelligent diagnostic APP, compares the collected vehicle fault data with the fault code information cached locally, obtains the corresponding fault details and repair suggestions and displays them, and uploads the data to the backend server.

[0060] In the appointment repair module, users can click the one-click repair button on the smart diagnostic APP to enter the appointment repair page. Based on the vehicle's GPS signal, the system obtains information on all nearby service stations. Users can select the name of the nearest service station and customize the service items. They can also click to modify the default user name and contact information before submitting an appointment repair work order.

[0061] The work order processing system allows users to submit repair work orders via the in-vehicle multimedia display screen. The backend server will automatically assign the work order to the corresponding service station, and the system personnel will contact the user to handle the fault. The system will automatically track the status of the work order, including creation, assignment, update, closure, and evaluation operations.

[0062] like Figure 2 As shown, the platform involved in this invention includes a vehicle management system, an in-vehicle display screen, and a back-end server; the in-vehicle display screen and the vehicle management system exchange data through an interface protocol, the back-end server and the in-vehicle display screen are interconnected through the Internet, and the in-vehicle multimedia screen and other in-vehicle electronic devices are interconnected through a bus.

[0063] This invention is based on commercial vehicles and uses the whole vehicle as the diagnostic unit for fault diagnosis. Users send diagnostic requests through the intelligent diagnostic APP on the vehicle display screen. The vehicle collects and parses the data of the vehicle controller according to the basic configuration information, synchronizes it to the intelligent diagnostic application, and displays the corresponding fault description and repair suggestions on the screen. After the user submits a repair work order, the work order processing system will automatically synchronize the information.

[0064] like Figure 3 As shown, after the vehicle is powered on and the in-vehicle display screen is turned on, the application automatically reads and parses the fault messages on the CAN bus, obtains the corresponding fault parameters, and compares them with the fault data cached on the screen. If they match, a pop-up window will remind the user. After the user clicks the pop-up window, they will be automatically redirected to the intelligent diagnostic APP, where they can view the fault details and report the repair. The repair order will be automatically uploaded to the system. After receiving the work order, the system will assign it to the corresponding service station. According to the work order content, the system personnel will contact the user by phone or SMS within a specified time to inform them of the processing status and update the work order status in a timely manner. After the repair is completed, the user can evaluate the service and record it in the work order processing system.

[0065] like Figure 4 As shown, each electronic device collects vehicle fault data and sends the data in message format to the in-vehicle display screen via the bus. After receiving the data, the in-vehicle display screen forwards the message to the intelligent diagnostic application via an internal Jar packet. The application then uploads the data to the backend server. The intelligent diagnostic APP functions include fault pop-ups, vehicle self-checks, fault details, appointment for repair, expert consultation, and historical records. Fault details help users keep abreast of vehicle fault information. In emergencies, users can refer to emergency plans to handle simple faults. It provides expert contact information for remote assistance. The one-click repair function, which allows users to submit a work order to the repair system from a nearby service station, improves repair efficiency and saves users time.

[0066] Definitions of abbreviations and key terms:

[0067] A Java Archive File (JAR) is a standard compressed file format that packages Java class files, resource files, and metadata into a single data package, reducing network transmission and storage space consumption. JARs are often used for modular development and manage dependencies through dependency management tools (such as Maven and Gradle), simplifying the project build and deployment process.

[0068] Android is an open-source mobile operating system based on the Linux kernel. It supports various hardware configurations and has a large application ecosystem.

[0069] Token authentication is a method used to verify user identity and permissions. It typically generates a unique token after the user's identity is verified, and then includes this token in every request. When the server receives the request, it verifies the validity of the token and confirms the user's identity and permissions, ensuring that only verified users can access protected resources, thereby improving system security and scalability.

[0070] A Vehicle Identification Number (VIN) is a unique 17-digit alphanumeric code used to identify motor vehicles such as cars, motorcycles, and trailers. The VIN accurately identifies important information such as the vehicle's manufacturer, model, and year of manufacture, ensuring data accuracy and consistency.

[0071] This invention is not limited to the above-described embodiments. Anyone should know that any structural changes made under the guidance of this invention, and any technical solutions that are the same as or similar to this invention, fall within the protection scope of this invention.

[0072] The technologies, shapes, and structures not described in detail in this invention are all known technologies.

Claims

1. A vehicle fault intelligent diagnosis and repair system based on an in-vehicle display screen, characterized in that, It includes a data acquisition module, an intelligent diagnostic module, an appointment repair module, and a work order processing system; The data acquisition module synchronizes vehicle configuration information through the vehicle management system. The in-vehicle display requests the backend server to send fault database information. After the backend server responds, the in-vehicle display synchronizes the latest fault data and caches it in the intelligent diagnostic APP. At the same time, it sends out collection tasks based on the vehicle configuration information. The intelligent diagnostic module, as described above, sends the collected electronic device information to the vehicle network bus via CAN messages on the in-vehicle display screen, runs the intelligent diagnostic APP, compares the collected vehicle fault data with the fault code database cached locally, obtains the corresponding fault details and repair suggestions, and displays them. The appointment repair module allows users to access the appointment repair page by clicking the one-click repair button on the intelligent diagnostic APP. It obtains information on all nearby service stations based on the vehicle's GPS signal, selects the name of the nearest service station and customizes the service items, modifies the default user name and contact information, and submits the appointment repair work order. After a repair work order is submitted via the vehicle-mounted display screen, the work order processing system automatically assigns the work order to the corresponding service station, waiting for system personnel to contact and handle the fault. The work order processing system also automatically tracks the work order status.

2. The vehicle fault intelligent diagnosis and repair system based on an in-vehicle display screen according to claim 1, characterized in that, The in-vehicle display screen is interconnected with electronic devices via a bus and collects fault data based on vehicle configuration information. The in-vehicle display screen is interconnected with the back-end server via the Internet, and the intelligent diagnostic APP on the in-vehicle display screen accesses data from the vehicle management system through an interface protocol.

3. The vehicle fault intelligent diagnosis and repair system based on an in-vehicle display screen according to claim 2, characterized in that, The electronic device includes an on-board controller and several vehicle sensors. The on-board controller sends the vehicle status and other vehicle information obtained by the vehicle sensors to the vehicle network bus via CAN messages.

4. The vehicle fault intelligent diagnosis and repair system based on an in-vehicle display screen according to claim 2, characterized in that, The vehicle-mounted display screen sends the repair request to the back-end server via a data link. After receiving the request, the back-end server stores the information and responds, sending it to the vehicle-mounted display screen via the data link. The vehicle-mounted display screen receives and displays the information.

5. The vehicle fault intelligent diagnosis and repair system based on an in-vehicle display screen according to claim 4, characterized in that, The vehicle-mounted display screen requests fault code database information from the backend server, compares the fault codes, and displays the corresponding fault code details and repair suggestions.

6. The vehicle fault intelligent diagnosis and repair system based on an in-vehicle display screen according to claim 1, characterized in that, The work order processing system includes operations for creating, assigning, updating, closing, and evaluating work orders. A repair work order is created and submitted through the vehicle display screen. After receiving the work order, the work order processing system assigns it to the corresponding service station. Based on the content of the work order, the service personnel will contact the user by phone or SMS within a specified time to inform them of the processing status and update the work order status in a timely manner.

7. The intelligent vehicle fault diagnosis and repair system based on an in-vehicle display screen according to claim 1, characterized in that, The intelligent diagnostic APP includes a fault pop-up window, vehicle self-check, fault details, appointment for repair, expert consultation, and history records. The fault pop-up window compares the messages corresponding to the fault codes in the fault code library sent by the CAN bus with the fault data cached on the vehicle display screen. When a fault code that requires a pop-up reminder appears on the bus, a pop-up window will appear to remind the user.

8. The intelligent vehicle fault diagnosis and repair system based on an in-vehicle display screen according to claim 7, characterized in that, The appointment-based repair request obtains information on all nearby service stations based on GPS signals and allows users to customize service items.

9. The intelligent vehicle fault diagnosis and repair system based on an in-vehicle display screen according to claim 7, characterized in that, The expert consultation allows users to access the expert consultation page by clicking the "Consult an Expert" button, submit an expert consultation work order to the work order processing system, and simultaneously display the phone number of the corresponding regional repair expert for remote assistance via the intelligent diagnostic APP.

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