Vehicle remote diagnosis device, system and diagnosis method

Abstract

The invention provides a vehicle remote diagnosis device, system and method. A field diagnosis module is provided with a diagnosis tool, and the diagnosis tool corresponds to diagnosis upper computer software; the remote diagnosis bridge comprises a CAN tool and a diagnosis bridge module in communication connection with the CAN tool; the diagnostic tool is in communication connection with the CAN tool through a rack CAN; the diagnosis bridge module is connected to a to-be-diagnosed target vehicle through the vehicle networking platform; and the diagnosis personnel remotely diagnoses the target vehicle to be diagnosed through the diagnosis upper computer software corresponding to the diagnosis tool, acquires diagnosis result information and displays the diagnosis result information. According to the invention, a remote vehicle diagnosis system is constructed. The system not only realizes the remote diagnosis operation, but also improves the diagnosis efficiency.

Description

Technical Field

[0001] The present invention belongs to the technical field of automobile diagnosis, and in particular relates to a vehicle remote diagnosis device, system and diagnosis method. Background Art

[0002] With the rapid development of the automobile industry and the continuous improvement of its intelligence level, vehicle fault diagnosis technology has become a key link in ensuring the safe and reliable operation of automobiles.

[0003] Existing vehicle fault diagnosis usually relies on on-site diagnosis, which often requires diagnostic personnel to use diagnostic equipment near the vehicle to connect to the vehicle's OBD interface for operation. In the diagnostic tool software, select the vehicle unit to diagnose the target vehicle. According to the function of the diagnostic tool, send a diagnostic request to the target vehicle. The diagnostic tool will receive the diagnostic result message from the target vehicle and send it back to the software for analysis and diagnostic result display.

[0004] The above diagnostic methods can only be used on-site, which limits the diagnostic distance. If there are many diagnostic areas, the diagnostic personnel can only go to the site one by one to operate, which prolongs the diagnostic cycle and reduces the diagnostic efficiency. In addition, each time, it is necessary to connect wires on-site, build diagnostic lines and equipment, which increases the complexity of diagnostic operations. Summary of the invention

[0005] The present invention provides a vehicle remote diagnosis device and system, and the present invention constructs a remote vehicle diagnosis system. Diagnostic personnel can remotely control and execute the diagnosis process at a remote end, which not only realizes the remote diagnosis operation, but also improves the diagnosis efficiency, and solves the problem that the existing on-site diagnosis method must be operated at the fault site and cannot be performed remotely.

[0006] The vehicle remote diagnosis device includes: an on-site diagnosis module and a remote diagnosis bridge; The field diagnosis module is provided with a diagnosis tool, and the diagnosis tool corresponds to the diagnosis host computer software; The remote diagnostic bridge includes: a CAN tool and a diagnostic bridge module that is communicatively connected with the CAN tool; The diagnostic tool is connected to the CAN tool via the bench CAN communication; the diagnostic bridge module is connected to the target vehicle to be diagnosed via the Internet of Vehicles platform; The diagnostic personnel remotely perform diagnostic operations on the target vehicle to be diagnosed through the diagnostic host computer software corresponding to the diagnostic tool, and obtain the diagnostic result information for display.

[0007] It should be further explained that the CAN tool is used to capture the message sent by the diagnostic tool to the test bench CAN, and send the message to the diagnostic bridge module according to the preset sending sequence; the diagnostic bridge module sends the message to the target vehicle to be diagnosed through the Internet of Vehicles platform based on the preset sending sequence; The CAN tool is also used to receive the diagnostic result message sent by the Internet of Vehicles platform through the diagnostic bridge module, and send the diagnostic result message to the preset CAN bus of the test bench CAN; The diagnostic tool retrieves the diagnostic result message through the preset CAN bus, analyzes it in the diagnostic host computer software, and forms diagnostic result information for display.

[0008] It should be further explained that the diagnostic bridge module is used to configure the baud rate of the CAN tool transmission message so that the baud rate is consistent with the baud rate of the test bench CAN.

[0009] It should be further explained that the message includes: message content, message ID, and a preset CAN bus of the test bench CAN where the CAN message is located.

[0010] The present application also provides a vehicle remote diagnosis system, comprising: a vehicle remote diagnosis device, a vehicle networking platform, and a target vehicle to be diagnosed; The diagnostic tool of the vehicle remote diagnostic device is connected to the CAN tool through the bench CAN, the CAN tool is connected to the diagnostic bridge module through the vehicle networking platform, and the diagnostic bridge module is connected to the vehicle diagnostic gateway of the target vehicle to be diagnosed; The vehicle diagnostic gateway is connected to the diagnostic target ECU of the target vehicle to be diagnosed through the vehicle CAN; The diagnostic personnel operate the diagnostic host computer software corresponding to the diagnostic tool and send messages to the test bench CAN through the diagnostic tool; The CAN tool captures messages on the test bench CAN and sends the messages to the diagnostic bridge module according to a preset sending sequence; the diagnostic bridge module sends the messages to the vehicle diagnostic gateway through the Internet of Vehicles platform based on the preset sending sequence; The vehicle diagnostic gateway is connected to the diagnostic target ECU via the vehicle CAN to perform diagnosis; Sending the diagnostic result message to the vehicle CAN; the vehicle diagnostic gateway extracts the diagnostic result message from the vehicle CAN and sends it to the preset CAN bus of the test bench CAN through the vehicle networking platform, the diagnostic bridge module and the CAN tool; The diagnostic tool retrieves the diagnostic result message through the preset CAN bus, analyzes it in the diagnostic host computer software, and forms diagnostic result information for display.

[0011] It should be further explained that the diagnostic bridge module is used to configure the vehicle identification information of the target vehicle to be diagnosed; The vehicle identification information is identified by the vehicle frame number or the device number of the vehicle-mounted Tbox device; Every time the diagnostic bridge module sends a message to the Internet of Vehicles platform, the message is configured with vehicle identification information; The Internet of Vehicles platform parses the vehicle identification information in the message and sends the message to the vehicle diagnostic gateway corresponding to the vehicle identification information.

[0012] It should be further explained that the vehicle diagnostic gateway is used to receive the message sent by the vehicle networking platform and parse the message; the vehicle diagnostic gateway is also used to receive the diagnosis result message and send it to the vehicle networking platform; The vehicle diagnostic gateway uses a vehicle-mounted Tbox device installed in the vehicle.

[0013] It should be further explained that the diagnostic target ECU is mounted on the vehicle CAN. When the diagnostic target ECU receives a message on the vehicle CAN, it executes a self-diagnosis process and sends a diagnostic result message back to the vehicle CAN.

[0014] The present application also provides a vehicle remote diagnosis method, the method comprising: The diagnostic personnel operate the diagnostic host computer software corresponding to the diagnostic tool and send messages to the test bench CAN through the diagnostic tool; The CAN tool captures the message on the test bench CAN and sends the message to the diagnostic bridge module according to the preset sending sequence; The diagnostic bridge module sends the information to the vehicle diagnostic gateway through the Internet of Vehicles platform based on the preset sending sequence; The vehicle diagnostic gateway is connected to the diagnostic target ECU via the vehicle CAN to perform diagnosis; Sending the diagnostic result message to the vehicle CAN; the vehicle diagnostic gateway extracts the diagnostic result message from the vehicle CAN and sends it to the preset CAN bus of the test bench CAN through the vehicle networking platform, the diagnostic bridge module and the CAN tool; The diagnostic tool retrieves the diagnostic result message through the preset CAN bus, analyzes it in the diagnostic host computer software, and forms diagnostic result information for display.

[0015] It should be further explained that, in the method, the baud rate of the CAN tool transmission message is also configured; Make the baud rate consistent with the baud rate of the gantry CAN.

[0016] It can be seen from the above technical solutions that the present invention has the following advantages: The vehicle remote diagnosis system proposed in the present invention builds a remote vehicle diagnosis system by integrating multiple parts such as the on-site diagnosis terminal, remote diagnosis bridge, vehicle networking platform, vehicle diagnosis gateway and diagnosis target ECU. The system not only realizes the remote diagnosis operation, but also improves the diagnosis efficiency, and solves the problem that the on-site diagnosis terminal must be operated at the fault site and cannot be operated remotely.

[0017] The present invention establishes a communication connection between the diagnostic tool and the CAN tool based on the bench CAN in the remote office. It can ensure a stable connection to reduce interference and loss during data transmission. It allows diagnostic personnel to transmit and receive vehicle data through the CAN line without having to go to the site in person. It shortens the diagnostic cycle and improves the flexibility of diagnosis.

[0018] Through the configuration and function activation of the diagnostic bridge module, the system of this application can transmit data between the test bench CAN and the Internet of Vehicles platform in real time, meeting the needs of remote diagnosis of vehicles. It allows technicians to perform remote fault diagnosis and troubleshooting on vehicles without having to visit the site, improving diagnostic efficiency and convenience. The diagnostic bridge module can receive and parse the information returned by the Internet of Vehicles platform, and forward the diagnostic result information to the test bench CAN, realizing two-way flow of information. Through the receiving and forwarding functions of the vehicle diagnostic gateway, diagnostic requests and diagnostic result information can be accurately transmitted on the diagnostic communication bus of the diagnosed vehicle. At the same time, the diagnostic target ECU can perform self-diagnosis after receiving the diagnostic request, and send the diagnostic result information back to the diagnostic communication bus, improving the accuracy and reliability of the diagnosis. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the present invention, the accompanying drawings required for use in the description will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0020] Figure 1 This is a schematic diagram of a vehicle remote diagnostic device; Figure 2 This is a schematic diagram of a vehicle remote diagnosis system; Figure 3 It is a schematic diagram of an embodiment of a vehicle remote diagnosis system; Figure 4 A flow chart of a vehicle remote diagnosis method; Figure 5 The present invention is a flow chart of an embodiment of a vehicle remote diagnosis method. DETAILED DESCRIPTION

[0021] The vehicle remote diagnosis device and system provided in this application are mainly for constructing a method for interacting with vehicle remote diagnosis information, so that diagnostic personnel can perform diagnostic operations on the actual running vehicle by operating the diagnostic tools in the remote monitoring room without having to arrive at the vehicle site.

[0022] In the vehicle remote diagnosis device and system of the present application, the connection relationship and information interaction mode between each part are clarified. Among them, the remote diagnosis bridge, as a key component in the present invention, realizes the information interaction between the vehicle remote diagnosis device in the remote monitoring room and the target vehicle to be diagnosed through the Internet of Vehicles platform. The remote diagnosis operation is realized. In the remote diagnosis system, the Internet of Vehicles platform, as a cloud platform for automobile companies to realize the Internet of Vehicles function, undertakes the tasks of information parsing, reorganization and forwarding. The Internet of Vehicles platform receives information from the remote diagnosis bridge, and forwards it to the vehicle diagnosis gateway after parsing and reorganizing it, and at the same time receives and processes the reply information from the vehicle diagnosis gateway.

[0023] The vehicle diagnostic gateway is installed on the vehicle and is responsible for receiving information sent by the Internet of Vehicles platform and forwarding it to the vehicle CAN line after parsing it. At the same time, after receiving the corresponding reply message on the diagnostic communication bus, it will forward the reply message package back to the Internet of Vehicles platform. The vehicle diagnostic gateway can be implemented by the vehicle-mounted device Tbox already installed on the vehicle.

[0024] In order to realize information interaction and diagnostic operations, the remote diagnostic bridge of this application adopts an intelligent design, which can automatically identify and adapt to different types of on-site diagnostic tools, and support the conversion of multiple communication protocols and data formats to meet the communication efficiency of each module in the system.

[0025] The specific implementation process and steps of the vehicle remote diagnosis device and system will be described in detail below. For the purpose of explanation rather than limitation, specific details such as specific system structures and technologies are proposed to facilitate a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application can also be implemented in other embodiments without these specific details.

[0026] The phrases such as "one embodiment" or "some embodiments" described in the present application mean that the specific features, structures or characteristics described in the embodiment are included in one or more embodiments of the present application. Therefore, the phrases such as "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments" etc. that appear in different places in the present application do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways.

[0027] 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.

[0028] See also Figure 1 The figure shows a schematic diagram of a vehicle remote diagnosis device in a specific embodiment. The device includes: an on-site diagnosis module and a remote diagnosis bridge. The on-site diagnosis module is provided with a diagnosis tool, and the diagnosis tool corresponds to a diagnosis host computer software; the remote diagnosis bridge includes: a CAN tool and a diagnosis bridge module connected to the CAN tool in communication.

[0029] It should be noted that the diagnostic host computer software and the diagnostic bridge module corresponding to the diagnostic tool may include but are not limited to laptop computers, desktop computers, workbenches, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. Electronic equipment can also represent various forms of mobile devices, such as personal digital processing and other similar computing devices. The components shown herein, their connections and relationships, and their functions are only used as examples, and are not intended to limit the implementation of the embodiments of the present application described and / or required herein.

[0030] The diagnostic tool of this embodiment is connected to the CAN tool via the bench CAN communication; the diagnostic bridge module is connected to the target vehicle to be diagnosed via the Internet of Vehicles platform.

[0031] As an implementation of this embodiment, the specific communication method may adopt the CAN communication protocol, the test bench communication bus may adopt the CAN communication bus, and the diagnostic communication bus in the diagnosed vehicle is the CAN communication bus.

[0032] It should be noted that the diagnostic content of the target vehicle includes but is not limited to: engine control unit, fuel system, ignition system, transmission control unit, clutch, differential, anti-lock braking system, electronic brake force distribution, suspension control unit, shock absorber, generator, starter, windows, door locks, airbag system, collision warning, etc.

[0033] The diagnostic result information of this embodiment includes information about vehicle component status, fault codes, fault descriptions, and fault solutions.

[0034] The diagnostic tool and its corresponding diagnostic host computer of this embodiment are the front-end devices for the interaction between the entire diagnostic system and the diagnostic personnel, and can be set in a remote operation room, so that the diagnostic personnel do not need to go to the scene to diagnose the vehicle. The diagnostic host computer software is developed for the diagnostic tool and is a software program specially developed for vehicle diagnosis, which is usually installed in a desktop or laptop computer. The software provides an interface for diagnostic operations and various functional logics, through which the operator initiates diagnostic requests, sets diagnostic parameters and other operations.

[0035] The CAN tool of this embodiment performs operations such as capturing and forwarding messages between the bench CAN and the diagnostic bridge module. The CAN tool can accurately identify the messages sent by the diagnostic tool to the bench CAN, and transmit the messages to the diagnostic bridge module according to a specific preset sending sequence. At the same time, the CAN tool can also receive the diagnostic result message from the diagnostic bridge module and send the message to the preset CAN bus of the bench CAN.

[0036] The diagnostic bridge module of this embodiment is a transfer point for remote data processing and network communication. The diagnostic bridge module communicates with the CAN tool, receives messages forwarded by the CAN tool, and sends messages to the target vehicle to be diagnosed through the Internet of Vehicles platform based on the preset sending sequence, thereby realizing the issuance of remote diagnostic instructions. The diagnostic bridge module also receives the diagnostic result message fed back by the Internet of Vehicles platform and transmits it to the CAN tool. The diagnostic bridge module is also used to configure the baud rate of the CAN tool transmission message to ensure that it is consistent with the baud rate of the test bench CAN to ensure the accuracy and stability of data transmission.

[0037] The message of this embodiment is the basic unit of data transmission during the diagnosis process, including message content, message ID, and the preset CAN bus of the CAN test bench where the CAN message is located. This information helps to accurately identify, route and process messages in a complex vehicle network environment.

[0038] As an implementation of this embodiment: the diagnostic personnel first starts the diagnostic host computer software corresponding to the diagnostic tool in the on-site diagnostic module.

[0039] The diagnostic host computer software generates corresponding diagnostic messages according to the diagnostic requirements, and the messages are sent to the test bench CAN through the diagnostic tool.

[0040] The CAN tool monitors the test bench CAN in real time. Once the message sent by the diagnostic tool is captured, it sends the message to the diagnostic bridge module according to the pre-set sending sequence.

[0041] After receiving the message, the diagnostic bridge module processes the message and then sends the message to the target vehicle to be diagnosed through the Internet of Vehicles platform.

[0042] After receiving the message, the target vehicle to be diagnosed performs the corresponding diagnostic operation and generates a diagnostic result message.

[0043] The diagnosis result message is sent back to the diagnosis bridge module through the Internet of Vehicles platform.

[0044] The diagnostic bridge module forwards the diagnostic result message to the CAN tool.

[0045] The CAN tool sends the diagnostic result message to the preset CAN bus of the test bench CAN.

[0046] The diagnostic tool retrieves the diagnostic result message from the preset CAN bus, parses it in the diagnostic host computer software, and finally displays the diagnostic result information to the diagnostic personnel in an intuitive manner.

[0047] In the whole process, the baud rate of the CAN tool transmission message is configured by the diagnostic bridge module during the system initialization or parameter adjustment stage. The baud rate parameters of the CAN tool are set through configuration instructions or interfaces to match the baud rate of the test bench CAN to ensure normal data transmission.

[0048] The vehicle remote diagnosis device involved in this embodiment enables the diagnostic personnel to conveniently perform vehicle diagnosis operations at a location far away from the target vehicle to be diagnosed, through the diagnostic tools of the on-site diagnostic module and its corresponding diagnostic host computer software. The diagnostic process is not restricted by geographical location, and the diagnostic personnel can perform preliminary diagnosis without being next to the vehicle, thereby improving work efficiency.

[0049] Since diagnostic tools and CAN tools can use various types of equipment, they can adapt to different usage scenarios and user needs. The configuration of the message baud rate through the diagnostic bridge module can ensure communication with the bench CAN with different baud rates. The clear message structure and the message transmission and processing between the CAN tool and the diagnostic bridge module according to the preset timing avoid the possibility of data transmission errors and confusion. The accurate return and analysis of the diagnostic result message provides a reliable basis for diagnosis personnel.

[0050] In combination with the above-mentioned vehicle remote diagnosis device, the present application also provides a vehicle remote diagnosis system. Figure 2 As shown, the vehicle remote diagnosis system includes: a vehicle remote diagnosis device, a vehicle networking platform and a target vehicle to be diagnosed.

[0051] The connection relationship between the various devices in the system involved in this embodiment is as follows: Figure 3 As shown, the diagnostic tool of the vehicle remote diagnostic device is connected to the CAN tool through the bench CAN, the CAN tool is connected to the diagnostic bridge module through the vehicle networking platform, the diagnostic bridge module is connected to the vehicle diagnostic gateway of the target vehicle to be diagnosed through the vehicle CAN; the vehicle diagnostic gateway is connected to the diagnostic target ECU of the target vehicle to be diagnosed through the vehicle CAN.

[0052] The diagnostic target ECU (Electronic Control Unit) of this embodiment is an electronic control unit in the diagnosed vehicle, which is responsible for controlling the vehicle. In the vehicle remote diagnosis system, the diagnostic target ECU refers to the electronic control unit that needs to be diagnosed, monitored or troubleshooted.

[0053] In this embodiment, when the diagnostic process is started, the diagnostic personnel send a message to the test bench CAN through the diagnostic tool; based on the above connection relationship, the CAN tool of the vehicle remote diagnostic device can capture the message on the test bench communication bus and send the message to the diagnostic bridge module according to the actual sending sequence. The CAN message content captured in this embodiment should include the message content, message ID, and the channel where the message is located.

[0054] The CAN tool of this embodiment can also receive messages from the diagnostic bridge module and send the messages to a designated CAN line of the test bench communication bus. The CAN messages sent by the diagnostic bridge module include the message content, message ID, and CAN channel of the message.

[0055] The remote diagnosis module is a computer client program developed based on C# and .NET Framework or other technologies. The remote diagnosis module can complete the configuration of the CAN tool baud rate. It is also used to receive and parse the information sent by the CAN tool. The diagnostic bridge module can monitor the messages on the test bench CAN, that is, the diagnostic bridge module captures the messages sent by the field diagnostic terminal.

[0056] After the diagnostic bridge module completes the communication connection and network configuration with the Internet of Vehicles platform, it completes the configuration by inputting the vehicle identity information used to uniquely identify a vehicle. Optionally, the vehicle identity information can be identified by the vehicle frame number or the device number of the vehicle-mounted Tbox device. Every time the diagnostic bridge module sends information to the Internet of Vehicles platform, it will carry the vehicle identity information in the information. After receiving it, the Internet of Vehicles platform will parse it and then remotely send the CAN message information in the information to the vehicle diagnostic gateway of the specified vehicle.

[0057] It should be noted that the vehicle diagnostic gateway uses an on-board Tbox device, which can receive messages forwarded by the Internet of Vehicles platform from the diagnostic bridge module, parse them, extract the command information for the diagnostic target ECU, and then pass the command to the diagnostic target ECU through the vehicle CAN.

[0058] In this embodiment, the diagnostic target ECU is mounted on the vehicle CAN. Once it receives the diagnostic message forwarded from the vehicle diagnostic gateway, it starts the self-diagnosis process, detects its own functions, and generates a corresponding diagnostic result message and sends it back to the vehicle CAN.

[0059] The vehicle diagnostic gateway receives the diagnostic result message generated by the diagnostic target ECU and sent on the vehicle CAN, and then transmits it back to the vehicle networking platform for final transmission back to the vehicle remote diagnostic device.

[0060] The diagnostic bridge module of this embodiment can also receive and analyze the information returned by the vehicle networking platform. That is to say, the diagnostic bridge module can receive the diagnostic result information sent by the diagnostic target ECU on the vehicle CAN line, which is the diagnostic communication bus, that is, the diagnostic bridge module obtains the vehicle CAN line to generate a corresponding diagnostic result information message for the diagnostic message. The diagnostic result information message includes the message content and the message ID.

[0061] The diagnostic bridge module forwards the message on the test bench CAN to the Internet of Vehicles platform, that is, it receives the CAN message sent by the CAN parsing tool, repackages it and forwards it to the Internet of Vehicles platform. It also forwards the corresponding diagnostic result message returned by the Internet of Vehicles platform to the test bench CAN, that is, it repackages the received parsed CAN message and forwards it to the CAN tool, and the CAN tool further forwards it to the test bench CAN.

[0062] It can be seen that after the diagnostic bridge module of this embodiment is configured accordingly and the corresponding functions are enabled, it is configured between the test bench CAN and the Internet of Vehicles platform, and the remote functions of the Internet of Vehicles platform are superimposed, so that data can flow in real time throughout the system, meeting the needs of remote diagnosis of vehicles.

[0063] The vehicle diagnostic gateway of this embodiment is installed on the diagnosed vehicle, and is used to receive information sent by the Internet of Vehicles platform, and forward the information to the diagnostic communication bus of the diagnosed vehicle after parsing; the vehicle diagnostic gateway also receives the diagnostic result information replied on the diagnostic communication bus, packages the diagnostic result information and forwards it back to the Internet of Vehicles platform; the diagnosed vehicle is equipped with a diagnostic target ECU, and the diagnostic target ECU is mounted on the diagnostic communication bus. When the diagnostic target ECU receives a vehicle diagnostic request on the diagnostic communication bus, it performs self-diagnosis and sends the diagnostic result information back to the diagnostic communication bus.

[0064] The system of this embodiment is enabled through the configuration and function of the diagnostic bridge module. The system can transmit data between the test bench CAN and the Internet of Vehicles platform in real time, meeting the needs of remote vehicle diagnosis. This allows technicians to perform remote fault diagnosis and troubleshooting on the vehicle without having to visit the site, improving diagnostic efficiency and convenience. The diagnostic bridge module can receive and parse the information returned by the Internet of Vehicles platform, and forward the diagnostic result information to the test bench CAN, realizing two-way flow of information. Through the receiving and forwarding functions of the vehicle diagnostic gateway, diagnostic requests and diagnostic result information can be accurately transmitted on the diagnostic communication bus of the diagnosed vehicle. At the same time, the diagnostic target ECU can perform self-diagnosis after receiving the diagnostic request, and send the diagnostic result information back to the diagnostic communication bus, improving the accuracy and reliability of the diagnosis.

[0065] The following is an embodiment of a vehicle remote diagnosis method provided by an embodiment of the present disclosure. This method and the vehicle remote diagnosis system of the above-mentioned embodiments belong to the same inventive concept. For details not described in detail in the embodiment of the vehicle remote diagnosis method, reference can be made to the embodiment of the above-mentioned vehicle remote diagnosis system.

[0066] like Figure 4 As shown, the method includes: S101: The diagnostic personnel operate the diagnostic host computer software corresponding to the diagnostic tool, and send a message to the test bench CAN through the diagnostic tool; S102: The CAN tool captures the message on the test bench CAN, and sends the message to the diagnostic bridge module according to a preset sending sequence; S103: The diagnostic bridge module sends the information to the vehicle diagnostic gateway through the Internet of Vehicles platform based on a preset sending sequence; S104: The vehicle diagnostic gateway is connected to the diagnostic target ECU via the vehicle CAN and performs diagnosis; S105: Sending the diagnostic result message to the vehicle CAN; the vehicle diagnostic gateway extracts the diagnostic result message from the vehicle CAN, and sends it to the preset CAN bus of the test bench CAN through the Internet of Vehicles platform, the diagnostic bridge module and the CAN tool; S106: The diagnostic tool retrieves the diagnostic result message through the preset CAN bus, analyzes it in the diagnostic host computer software, and generates diagnostic result information for display.

[0067] In the method provided in this embodiment, the diagnostic personnel send a message to the test bench CAN through the diagnostic tool at the remote end; the CAN tool captures the message on the test bench CAN and sends the message to the diagnostic bridge module according to the preset sending sequence; the diagnostic bridge module sends it to the vehicle diagnostic gateway through the Internet of Vehicles platform based on the preset sending sequence; the vehicle diagnostic gateway is connected to the diagnostic target ECU through the vehicle CAN to perform the diagnosis; it can be seen that this embodiment realizes the sending of the diagnostic message from the diagnostic tool to the diagnostic gateway of the target vehicle, ensuring the accurate issuance of the diagnostic instructions, without the need for diagnostic personnel to work on site, improving the diagnostic efficiency, and saving a lot of time and labor costs. In the method, the baud rate of the CAN tool transmission message is also configured; the baud rate is made consistent with the baud rate of the test bench CAN. The data transmission and processing of each link have clear timing and specifications, which reduces data transmission delays and errors and further improves the diagnostic efficiency.

[0068] In order to achieve remote vehicle diagnosis, this application also involves the construction of a diagnostic network. The specific construction method includes: The communication connection between the diagnostic tool and the CAN tool is established based on the bench CAN. This ensures a stable connection to reduce interference and loss during data transmission.

[0069] Establish a communication connection between the CAN tool and the diagnostic bridge module. Optionally, you can set network parameters such as IP address, port number, etc.

[0070] Configure remote diagnostic parameters based on the diagnostic bridge module, establish the communication protocol between the diagnostic bridge module and the Internet of Vehicles platform, and define the preset network transmission format; Establish a communication connection between the Internet of Vehicles platform and the vehicle diagnostic gateway, and connect the diagnostic target vehicle to the vehicle diagnostic gateway.

[0071] The vehicle diagnostic gateway is installed on the vehicle, and the vehicle is equipped with a diagnostic target ECU. The vehicle diagnostic gateway and the diagnostic target ECU communicate through the vehicle CAN line.

[0072] Through the mobile network, the Internet of Vehicles platform is remotely connected to the vehicle diagnostic gateway.

[0073] In some specific embodiments, Figure 5 , showing the specific diagnostic process of the above vehicle remote diagnostic method. As for the interactive mode of vehicle diagnostic request and diagnostic result information of this embodiment, Figure 5 The specific transmission mode is shown. The specific transmission mode is: Step 1: The diagnostic personnel sends a message to the test bench CAN2 through the diagnostic tool 1; Step 2: CAN tool 6 captures the diagnostic message sent by diagnostic tool 1; Step 3: The CAN tool 6 packages the diagnostic message according to the protocol and sends it to the diagnostic bridge module 7; Step 4: After parsing the diagnostic message according to the protocol, the diagnostic bridge module 7 transfers the diagnostic message to the forwarding module; In this embodiment, the diagnostic bridge module 7 may be provided with a CAN tool information receiving module, a vehicle networking platform 3 information receiving module and a forwarding module. The CAN tool information receiving module may be connected to the CAN tool 6 in communication. The vehicle networking platform 3 information receiving module may be connected to the vehicle networking platform 3 in communication.

[0074] Step 5: The forwarding module packages the acquired diagnostic message according to the protocol and forwards it to the Internet of Vehicles platform 3 via the Internet; Step 6: The Internet of Vehicles platform 3 parses the received data according to the protocol, packages it according to the protocol, and then sends it to the vehicle diagnostic gateway 4 via the Internet; After the vehicle diagnostic gateway 4 parses the received data according to the protocol, it sends the diagnostic message to the vehicle CAN8. After the diagnostic target ECU5 receives the diagnostic message from the vehicle CAN8, it performs self-diagnosis and sends the diagnostic result back to the CAN line. The vehicle diagnostic gateway 4 will receive the diagnostic result; Step 7: The vehicle diagnostic gateway 4 packages the diagnostic results according to the protocol and returns them to the Internet of Vehicles platform 3; Step 8: The Internet of Vehicles platform 3 parses the result returned by the vehicle diagnostic gateway 4 according to the protocol, packages it according to the protocol, and then returns it to the diagnostic bridge module 7.

[0075] Step 9: The receiving vehicle networking platform 3 information module of the diagnostic bridge module 7 receives the data and parses it according to the protocol, and then transfers the diagnostic result to the forwarding module in the software; Step 10: The forwarding module packages the obtained diagnostic results according to the protocol and sends them to the CAN tool 6; Step 11: The CAN tool 6 parses the data sent by the diagnostic bridge module 7 according to the protocol, and sends the parsed diagnostic result message to the test bench CAN2.

[0076] Step 12: The field diagnosis terminal receives the diagnosis result on the test bench CAN2 and displays the diagnosis result.

[0077] The above method sends out diagnostic messages through diagnostic tools, and after protocol conversion and transmission, the diagnostic results can be quickly fed back to the diagnostic tools, which improves the real-time nature of the diagnosis. Each step of transmission is based on the protocol to ensure that the diagnostic message and diagnostic results are not lost during the transmission process, thereby improving the accuracy of the diagnosis. The entire diagnostic process is highly automated, reducing manual intervention and avoiding diagnostic errors caused by human operational errors. Remote operation also allows diagnostic personnel to conduct remote diagnosis without having to visit the site in person.

[0078] Through the above process, diagnostic personnel can perform remote diagnosis of the target vehicle without having to go to the vehicle site in person. This not only improves diagnostic efficiency and reduces diagnostic costs, but also enables timely detection and processing of problems when a vehicle fails, thereby improving the vehicle's user experience and safety.

[0079] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A vehicle remote diagnostic device, characterized in that: include: Field diagnostic modules and remote diagnostic bridges; The field diagnosis module is provided with a diagnosis tool, and the diagnosis tool corresponds to the diagnosis host computer software; The remote diagnostic bridge includes: a CAN tool and a diagnostic bridge module that is communicatively connected with the CAN tool; The diagnostic tool is connected to the CAN tool via the bench CAN communication; the diagnostic bridge module is connected to the target vehicle to be diagnosed via the Internet of Vehicles platform; The diagnostic personnel remotely perform diagnostic operations on the target vehicle to be diagnosed through the diagnostic host computer software corresponding to the diagnostic tool, and obtain the diagnostic result information for display.

2. The vehicle remote diagnosis device according to claim 1, characterized in that: The CAN tool is used to capture the message sent by the diagnostic tool to the test bench CAN, and send the message to the diagnostic bridge module according to the preset sending sequence; the diagnostic bridge module sends the message to the target vehicle to be diagnosed through the Internet of Vehicles platform based on the preset sending sequence; The CAN tool is also used to receive the diagnostic result message sent by the Internet of Vehicles platform through the diagnostic bridge module, and send the diagnostic result message to the preset CAN bus of the test bench CAN; The diagnostic tool retrieves the diagnostic result message through the preset CAN bus, analyzes it in the diagnostic host computer software, and forms diagnostic result information for display.

3. The vehicle remote diagnosis device according to claim 1 or 2, characterized in that: The diagnostic bridge module is used to configure the baud rate of the CAN tool transmission message so that the baud rate is consistent with the baud rate of the test bench CAN.

4. The vehicle remote diagnosis device according to claim 2, characterized in that: The message includes: message content, message ID, and a preset CAN bus of the test bench CAN where the CAN message is located.

5. A vehicle remote diagnosis system, characterized in that: include: Vehicle remote diagnosis device, vehicle networking platform and target vehicle to be diagnosed; The diagnostic tool of the vehicle remote diagnostic device is connected to the CAN tool through the bench CAN, the CAN tool is connected to the diagnostic bridge module through the vehicle networking platform, and the diagnostic bridge module is connected to the vehicle diagnostic gateway of the target vehicle to be diagnosed; The vehicle diagnostic gateway is connected to the diagnostic target ECU of the target vehicle to be diagnosed through the vehicle CAN; The diagnostic personnel operate the diagnostic host computer software corresponding to the diagnostic tool and send messages to the test bench CAN through the diagnostic tool; The CAN tool captures messages on the test bench CAN and sends the messages to the diagnostic bridge module according to a preset sending sequence; the diagnostic bridge module sends the messages to the vehicle diagnostic gateway through the Internet of Vehicles platform based on the preset sending sequence; The vehicle diagnostic gateway is connected to the diagnostic target ECU via the vehicle CAN to perform diagnosis; Sending the diagnostic result message to the vehicle CAN; the vehicle diagnostic gateway extracts the diagnostic result message from the vehicle CAN and sends it to the preset CAN bus of the test bench CAN through the vehicle networking platform, the diagnostic bridge module and the CAN tool; The diagnostic tool retrieves the diagnostic result message through the preset CAN bus, analyzes it in the diagnostic host computer software, and forms diagnostic result information for display.

6. The vehicle remote diagnosis system according to claim 5, characterized in that: The diagnostic bridge module is used to configure the vehicle identification information of the target vehicle to be diagnosed; The vehicle identification information is identified by the vehicle frame number or the device number of the vehicle-mounted Tbox device; Every time the diagnostic bridge module sends a message to the Internet of Vehicles platform, the message is configured with vehicle identification information; The Internet of Vehicles platform parses the vehicle identification information in the message and sends the message to the vehicle diagnostic gateway corresponding to the vehicle identification information.

7. The vehicle remote diagnosis system according to claim 5, characterized in that: The vehicle diagnostic gateway is used to receive messages sent by the vehicle networking platform and parse the messages; the vehicle diagnostic gateway is also used to receive diagnostic result messages and send them to the vehicle networking platform; The vehicle diagnostic gateway uses a vehicle-mounted Tbox device installed in the vehicle.

8. The vehicle remote diagnosis system according to claim 5, characterized in that: The diagnostic target ECU is mounted on the vehicle CAN. When the diagnostic target ECU receives a message on the vehicle CAN, it executes a self-diagnosis process and sends a diagnostic result message back to the vehicle CAN.

9. A vehicle remote diagnosis method, characterized in that: The method is implemented based on the vehicle remote diagnosis system according to any one of claims 5 to 8; Methods include: The diagnostic personnel operate the diagnostic host computer software corresponding to the diagnostic tool and send messages to the test bench CAN through the diagnostic tool; The CAN tool captures the message on the test bench CAN and sends the message to the diagnostic bridge module according to the preset sending sequence; The diagnostic bridge module sends the information to the vehicle diagnostic gateway through the Internet of Vehicles platform based on the preset sending sequence; The vehicle diagnostic gateway is connected to the diagnostic target ECU via the vehicle CAN to perform diagnosis; Sending the diagnostic result message to the vehicle CAN; the vehicle diagnostic gateway extracts the diagnostic result message from the vehicle CAN and sends it to the preset CAN bus of the test bench CAN through the vehicle networking platform, the diagnostic bridge module and the CAN tool; The diagnostic tool retrieves the diagnostic result message through the preset CAN bus, analyzes it in the diagnostic host computer software, and forms diagnostic result information for display.

10. The vehicle remote diagnosis method according to claim 9, characterized in that: In the method, the baud rate of the CAN tool transmission message is also configured; Make the baud rate consistent with the baud rate of the gantry CAN.

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