A vehicle preparation service system and method for a production line without network coverage

Abstract

The present invention relates to a vehicle preparation service system and method for a production line without network coverage, comprising OTA preparation service software, an edge device, a UPS power supply, a wireless routing device, an OBD conversion device, and a terminal device; the OTA preparation service software is deployed in the edge device; the UPS power supply is responsible for powering the edge device and the wireless routing device; the OBD conversion device is connected to the actual vehicle via an OBD interface; the edge device, the OBD conversion device, and the terminal device are all connected to the WIFI broadcast by the wireless routing device, and data communication is performed in a local area network; the terminal device is operated to access the OTA preparation service software deployed in the edge device in a browser, and preparation information is sent to the vehicle to be prepared via the WIFI, and the preparation result is transmitted back by the vehicle to the OTA preparation service software; the present invention is not restricted by network, power failure, rainy or snowy environmental factors, and can still be operated in rainy and snowy weather through facilities such as tents, and has strong adaptability.

Description

Technical Field

[0001] The present invention belongs to the technical field of vehicle preparation services for production lines, and relates to a vehicle preparation service system and method for production lines in an environment without network coverage. Background Art

[0002] When developing automotive control units (ECUs), assembly numbers are used to manage the one-to-one correspondence between hardware and software numbers. For example, a controller with hardware part number A, version 01, and software part number B, version 02, together forms assembly part number C, version 01. Whenever either the hardware or software version is upgraded, the assembly part number is also updated simultaneously, thereby managing the development status of the controller. Previously, a vehicle model had only a small number of controllers, and once developed, these controllers were rarely changed. Therefore, the vehicle identification number (VIN) was the only means of tracing the vehicle's production batch. However, with the recent development of over-the-air (OTA), software upgrades in already-sold vehicles can be easily performed over the internet. Vehicles from different production batches may have different software versions, and even vehicles from the same batch may have different software versions between controllers. This presents management challenges for fault control. Consequently, the concept of managing the software of all controllers in a vehicle as a whole is gaining increasing attention.

[0003] The present invention can utilize multiple hardware devices in conjunction with the OTA system to centrally manage ECU software versions and record relevant version information and status through vehicle OTA preparation, thereby meeting regulatory requirements.

[0004] Patent document CN114860277A discloses an automobile ECU software compression and upgrade system, method, electronic device, and storage medium, including: S1, compressing the executable program in the ECU software upgrade package;

[0005] S2: Deploy the ECU software upgrade package to the host computer node used to flash the ECU. The host computer node parses the ECU software upgrade package to obtain a compressed package of the executable program. S3: Transmit the compressed package of the executable program to the ECU in blocks and store it in a buffer. S4: The ECU decompresses the compressed package in the buffer and flashes the decompressed data to the ECU. After flashing is complete, the buffer is cleared. S5: Repeat steps S3-S4 until the executable program is flashed. This invention effectively improves the flashing efficiency of the ECU software upgrade process and saves the time for vehicle OTA upgrades or UDS diagnostic flashing.

[0006] The aforementioned patent provides an ECU automotive diagnostic instrument for complete vehicle maintenance, designed to increase the speed at which the ECU acquires maintenance and upgrade information, thereby improving the efficiency of vehicle ECU maintenance and upgrades. This allows for faster acquisition of upgrade information compared to traditional vehicle diagnostic instrument maintenance and upgrades. However, this requires hardware support, such as the automotive diagnostic instrument, and fails to meet the needs of batch vehicle maintenance and upgrades. It is also significantly limited by the number of vehicles that can be used, making it less flexible than the present invention.

[0007] Patent document CN114880002A provides an OTA data flashing method and system, which includes the following steps: uploading multiple OTA upgrade data packets containing multiple preset vehicle model information to the MES system; obtaining the actual vehicle model information of the target vehicle; extracting the corresponding specific upgrade data packet from the multiple OTA upgrade data packets based on the vehicle identification code, and feeding it back to the offline diagnostic flashing device; using the offline diagnostic flashing device, comparing the software module information in the specific upgrade data packet with the software module information in the actual vehicle model information; if the comparison is correct, flashing the specific upgrade data packet to the target vehicle to complete the data upgrade. The automatic transmission of OTA upgrade data packets through the online system can avoid missed transmissions compared to offline or email delivery. At the same time, by specifically comparing the software module information, it can avoid data packet mismatches due to changes in the vehicle's software modules after the vehicle is offline.

[0008] The aforementioned patents are not particularly relevant to the present invention. The present invention utilizes a simple maintenance environment to establish and transition between vehicle maintenance modes. Even in an offline environment, maintenance can still be performed by accessing the OTA maintenance service software, completely eliminating security issues caused by information asymmetry. Furthermore, the hardware devices mentioned in the present invention are easy to deploy and highly adaptable, offering significant advantages over offline terminals.

[0009] Patent document CN114125000A provides a method for upgrading a vehicle ECU, which is applied to a server. The method includes: receiving a vehicle identification and ECU information of a target vehicle sent by a diagnostic device; the ECU information includes N ECU identifications and a current software version number corresponding to each of the ECU identifications; obtaining the latest software version numbers corresponding to the N ECU identifications based on the vehicle identification; when the current software version number corresponding to at least one target ECU identification among the N ECU identifications is different from the latest software version number, sending a software update package to the diagnostic device; the software update package includes an upgrade file corresponding to the at least one target ECU identification, so that the diagnostic device upgrades the ECU of the target vehicle according to the software update package; N is a positive integer.

[0010] The above patents have low relevance to the present invention. The present invention has the characteristic of supporting batch vehicle preparation work, which has great advantages in an environment where batch vehicle preparation is required. Summary of the Invention

[0011] The technical problem to be solved by the present invention is to overcome the above-mentioned problems existing in the prior art and provide a vehicle preparation service system and method in an environment where a production line has no network coverage.

[0012] The present invention utilizes edge devices and wireless routing devices to form a network and build an OTA preparation service. The OBD conversion device converts the vehicle mode. The actual vehicle connects to the OTA preparation service built in the edge device according to the communication protocol. This solves the problem that the actual vehicle cannot directly connect to the OTA system when there is no network coverage, so that batch vehicle preparation services can be carried out in an environment without network coverage on the production line.

[0013] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0014] In order to solve the above technical problems, the present invention is implemented by adopting the following technical solutions:

[0015] A vehicle preparation service system for production lines without network coverage, including OTA preparation service software, edge devices, UPS power supply, wireless routing equipment, OBD conversion equipment, and terminal equipment;

[0016] OTA provisioning service software is deployed in edge devices;

[0017] The UPS power supply is responsible for supplying power to edge devices and wireless routing equipment;

[0018] The OBD conversion device is connected to the actual vehicle through the OBD interface;

[0019] The edge device, OBD conversion device and terminal device are all connected to the WIFI broadcast by the wireless routing device to communicate data in the local area network;

[0020] The operating terminal device accesses the OTA preparation service software deployed in the edge device in the browser, sends the preparation information to the vehicle to be prepared via WIFI, and the preparation result is sent back to the OTA preparation service software by the vehicle.

[0021] OTA maintenance service software aligns the software versions of all vehicles being maintained to a unified version. It categorizes and defines different component versions based on different vehicle models. Using a centrally managed baseline, it issues vehicle maintenance upgrade tasks defined by the software, managing the specific vehicle software upgrade process. This service software is currently available.

[0022] Furthermore, the maintenance environment is set up: in an environment without network coverage, prepare a UPS power supply with power that meets the working requirements to power the edge devices and wireless routing devices; deploy OTA maintenance service software in the edge devices and install wireless routing devices so that the actual vehicle connected to the wireless routing device can access the OTA maintenance service software through the wireless network.

[0023] Furthermore, the edge device is used to connect the internal local area network to the Internet or external wide area network, and can provide OTA preparation service software services through wireless routing equipment and wireless networks;

[0024] The UPS power supply consists of five parts: a rectifier, a battery, an inverter, a static switch and a control system; it converts AC power into a regulated DC power supply.

[0025] The wireless routing device can provide mutual access between edge devices and wired local area networks, ensuring normal communication within the coverage range of AP signals.

[0026] Furthermore, the function of the OBD conversion device to switch the mode of the vehicle to be prepared is built into the OBD adapter device. After the device is connected to the vehicle, it can immediately read the vehicle VIN code and upload the VIN code information to the production line OTA preparation server. After the production line OTA preparation server gives feedback on success, the communication link is connected, and the current status of the vehicle can be read through the UDS protocol. Click to switch the three modes of the vehicle to switch the mode.

[0027] Furthermore, the terminal device obtains vehicle information and baseline information that establishes a connection with the OTA preparation service software deployed on the edge device through the AP.

[0028] Furthermore, the baseline information includes the hardware version number, multiple ECU software version numbers corresponding to the hardware version number, and upgrade data packages of the corresponding software versions; the OTA preparation software platform sends baseline information to the entire vehicle that needs to be batch prepared based on the vehicle information and hardware version number. If the sent information is consistent with the vehicle information, the corresponding multiple ECU software upgrade package information will be sent to the vehicle-side TBOX, and the upgrade package will be sent to the specific ECU through the central gateway to complete the ECU upgrade operation, and the upgrade progress and upgrade result data will be sent back to the OTA preparation service software deployed on the edge device.

[0029] Furthermore, the maintenance service refers to the unified management of the hardware version numbers and software version numbers corresponding to multiple ECUs inside the car. Through the maintenance service, the software of these ECUs can be kept at a specific version; the maintenance service relies on managing the baseline and performing baseline alignment operations to achieve it.

[0030] Furthermore, when there is network coverage, the actual vehicle directly connects to the OTA maintenance service software to obtain baseline data and perform ECU version management;

[0031] When there is no network coverage, the actual vehicle cannot directly connect to the OTA maintenance service software and relies on connecting to the car diagnostic instrument handheld terminal device one by one to perform maintenance operations.

[0032] Furthermore, click to switch the vehicle's three modes: electrical inspection mode, factory mode, and general mode; after switching the mode, it is necessary to verify the certificate connection status. The verification is reflected by the indicator light of the device indicating the mode status, otherwise the indicator light is off.

[0033] A method for providing vehicle preparation services in an environment without network coverage on a production line includes the following steps:

[0034] Step 1: Prepare the UPS power supply and check whether the battery power meets the operation requirements. If it meets the requirements, deploy the UPS power supply in the actual business scenario and prepare for step 2;

[0035] Step 2: Prepare normal edge devices and wireless routing equipment, use the UPS power supply arranged in step 1 to power them, and wait for step 3 to set up the network environment;

[0036] Step 3: The edge device and wireless router are ready for LAN networking, ensuring normal communication within the coverage area of ​​the LAN.

[0037] Step 4: Deploy the OTA provisioning service software on the edge devices deployed in Steps 2 and 3 to ensure that services can be provided within the LAN environment established in Step 3.

[0038] Step 5: Use the terminal device to access the local area network established in step 3 and access the OTA preparation service software deployed in the edge device in step 4;

[0039] Step 6: After setting up the preparation environment from step 1 to step 5, connect the OBD conversion device to the vehicle to be prepared through the OBD interface and switch the vehicle mode to factory mode;

[0040] Step 7: After switching the vehicle mode to factory mode in step 6, the vehicle to be prepared will connect to the OTA preparation service software via the UDS protocol;

[0041] Step 8: After step 7, the OTA preparation service software-to-vehicle link has been established. The OTA preparation service software sends a version alignment command to the vehicle to be prepared and monitors the preparation process in real time.

[0042] Step 9: After completing step 8, verify that the vehicle and the OTA maintenance service software have successfully communicated and ensure that the maintenance records have been successfully collected;

[0043] Step 10: If the local area network (LAN) affects the communication between the vehicle and the OTA preparation service software, the preparation records that need to be transmitted will be stored in the edge device in offline mode and will be returned to the OTA preparation service software after the wireless LAN is restored.

[0044] Step 11: Complete the vehicle preparation work, collect the preparation records, disconnect the LAN and UPS power supply, and end the preparation work for the vehicle to be prepared.

[0045] Compared with the prior art, the present invention has the following beneficial effects:

[0046] The present invention is not limited by network, power outages, or rainy or snowy environments. The OBD conversion equipment, edge devices, wireless routing equipment, and UPS power supplies used are all industrial-grade devices. In the absence of network or power, the UPS power supply can be used for external power supply. The edge devices and wireless routing equipment can be networked to establish an OTA maintenance service environment. The OBD device can be simply plugged in and out of the maintenance vehicle to complete the maintenance work. The four aforementioned devices are ready for immediate use and can still be operated in rainy or snowy weather through tents and other facilities, demonstrating strong adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] The present invention will be further described below in conjunction with the accompanying drawings:

[0048] Figure 1 Illustration of the OBD conversion device switching to the vehicle mode to be prepared;

[0049] Figure 2 Prepare a flow chart for vehicle OTA preparation;

[0050] Figure 3 This is a solution architecture diagram of a vehicle preparation service system for a production line without network coverage according to the present invention;

[0051] Figure 4 This is a flow chart of a method for performing vehicle preparation services in an environment without network coverage on a production line as described in the present invention. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical solutions and advantages of the implementation of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below in conjunction with the drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The described embodiments are part of the embodiments of the present invention, not all of the embodiments. The embodiments described below with reference to the drawings are exemplary and are intended to be used to explain the present invention, and should not be understood as limiting the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. The embodiments of the present invention are described in detail below in conjunction with the drawings.

[0053] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are 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 should not be understood as limiting the scope of protection of the present invention.

[0054] The present invention will be described in detail below with reference to the accompanying drawings:

[0055] The present invention relates to the field of vehicle preparation services for production lines. Preparation services refer to the unified management of hardware version numbers and software version numbers corresponding to multiple ECUs inside a car, and the software of these ECUs can be kept at a specific version through preparation services. Preparation services rely on managing baselines and performing baseline alignment operations to achieve this. The baseline is managed within the OTA system and is a collection of software versions of ECUs corresponding to fixed vehicle models under fixed hardware versions. Baseline alignment is a term in the automotive industry and is the operation of upgrading the ECU software under the baseline using an upgrade package after the actual vehicle ECU software version is made consistent with the baseline in the OTA system.

[0056] OTA: Over-the-air download technology;

[0057] UPS power supply: uninterruptible power supply;

[0058] OBD: On-board diagnostic system;

[0059] ECU: Electronic Control Unit;

[0060] VIN: Vehicle Identification Number;

[0061] UDS: A diagnostic communication protocol.

[0062] When there is network coverage, the actual vehicle can obtain baseline data by directly connecting to the OTA system and perform ECU version management.

[0063] When there is no network coverage, the actual vehicle cannot directly connect to the OTA system and can only rely on connecting to the car diagnostic instrument handheld terminal device one by one for maintenance operations.

[0064] The present invention utilizes edge devices and wireless routing devices to form a network and build an OTA preparation service. The OBD conversion device converts the vehicle mode. The actual vehicle connects to the OTA preparation service built in the edge device according to the communication protocol. This solves the problem that the actual vehicle cannot directly connect to the OTA system when there is no network coverage, so that batch vehicle preparation services can be carried out in an environment without network coverage on the production line.

[0065] The present invention is not limited by network, power outages, or rainy or snowy environments. The OBD conversion equipment, edge devices, wireless routing equipment, and UPS power supplies used are all industrial-grade devices. In the absence of network or power, the UPS power supply can be used for external power supply. The edge devices and wireless routing equipment can be networked to establish an OTA maintenance service environment. The OBD device can be simply plugged in and out of the maintenance vehicle to complete the maintenance work. The four aforementioned devices are ready for immediate use and can still be operated in rainy or snowy weather through tents and other facilities, demonstrating strong adaptability.

[0066] The present invention proposes a vehicle preparation service system and method in an environment without network coverage on the production line, which mainly involves the construction of the preparation environment, vehicle mode switching, vehicle OTA preparation, and OTA preparation recording technology.

[0067] Setting up the maintenance environment: In an environment without network coverage, prepare a UPS power supply with sufficient power to power the edge devices and wireless routers. Deploy the OTA maintenance service software on the edge devices and install wireless routers so that all vehicles connected to the wireless routers can access the OTA maintenance service software via the wireless network.

[0068] 1) The edge device is mainly used to connect the internal LAN to the Internet or external WAN. In the present invention, it plays the role of a wireless access point and can provide OTA service software services through wireless routing devices and wireless networks.

[0069] 2) The UPS consists of five components: a rectifier, battery, inverter, static switch, and control system. It converts AC power from the mains into a regulated DC power source, which is then fed to the battery and inverter. The inverter then regenerates the DC power source into a stable, pure, high-quality AC power source. This completely eliminates any potential power supply issues (voltage fluctuations, frequency fluctuations, harmonic distortion, and other interference) that may arise in the input power supply, providing a reliable power supply for the present invention.

[0070] 3) Wireless routing devices can provide mutual access between edge devices and wired LANs, ensuring normal communication within the AP signal coverage range.

[0071] Vehicle mode switch: see Figure 1 、 Figure 2 、 Figure 3 The function of the OBD conversion device to switch the mode of the vehicle to be prepared needs to be built into the OBD adapter device. After the device is connected to the vehicle, it can immediately read the vehicle VIN code and upload the VIN code information to the production line OTA preparation server. After the production line OTA preparation server gives feedback on success, the communication link is connected. The current status of the vehicle can be read through the UDS protocol. Click any button to switch the vehicle's three modes (electric inspection mode, factory mode, general mode) and switch the mode. After switching to general or factory mode, the certificate connection status needs to be verified. The verification is reflected by the indicator light of the device indicating the mode status, otherwise the indicator light is off.

[0072] See Figure 2 、 Figure 3 、 Figure 4 , whole vehicle OTA preparation: Use the terminal (laptop, tablet, mobile phone, etc.) to obtain the vehicle information and baseline information that are connected to the OTA preparation service software through the OTA preparation service software deployed on the edge device through the AP. The baseline information includes the hardware version number, the multiple ECU software version numbers corresponding to the hardware version number, and the upgrade data package (zip format) of the corresponding software version. The OTA preparation software platform sends baseline information to the whole vehicle that needs to be prepared in batches based on the vehicle information and hardware version number. If the sent information (hardware version number, multiple ECU software version numbers corresponding to the hardware version number) is consistent with the whole vehicle information, then the corresponding multiple ECU software upgrade package information will be sent to the vehicle-side TBOX, and the upgrade package will be sent to the specific ECU through the central gateway to complete the ECU upgrade operation, and the upgrade progress and upgrade result data (version numbers before and after the upgrade) will be sent back to the OTA preparation service software deployed on the edge device (version alignment function).

[0073] See Figure 3 The architecture of a vehicle preparation service system for production lines without network coverage is as follows:

[0074] 1. OTA provisioning service software is deployed in edge devices;

[0075] 2. The UPS power supply is responsible for powering edge devices and wireless routing devices;

[0076] 3. The OBD conversion device is connected to the actual vehicle through the OBD interface;

[0077] 4. The edge device, OBD conversion device and terminal device are all connected to the WIFI broadcast by the wireless routing device and communicate data in the local area network;

[0078] 5. The engineer uses the terminal device to access the OTA preparation software deployed in the edge device in the browser, and sends the preparation information to the vehicle to be prepared via Wi-Fi. The preparation results are then sent back to the OTA preparation software by the vehicle.

[0079] A method for providing vehicle preparation services in an environment without network coverage on a production line, such as Figure 4 As shown:

[0080] Step 1: Prepare the UPS power supply and check whether the battery power meets the operation requirements. If it meets the requirements, deploy the UPS power supply in the actual business scenario and prepare for step 2;

[0081] Step 2: Prepare normal edge devices and wireless routing equipment, use the UPS power supply arranged in step 1 to power them, and wait for step 3 to set up the network environment;

[0082] Step 3: The edge device and wireless router are ready for LAN networking, ensuring normal communication within the coverage area of ​​the LAN.

[0083] Step 4: Deploy the OTA provisioning service software on the edge devices deployed in Steps 2 and 3 to ensure that services can be provided within the LAN environment established in Step 3.

[0084] Step 5: Use a terminal (laptop, tablet, mobile phone, etc.) to access the LAN established in step 3 and access the OTA provisioning service software deployed on the edge device in step 4.

[0085] Step 6: After setting up the preparation environment from step 1 to step 5, connect the OBD conversion device to the vehicle to be prepared through the OBD interface and switch the vehicle mode to factory mode;

[0086] Step 7: After switching the vehicle mode to factory mode in step 6, the vehicle to be prepared will connect to the OTA preparation service software via the UDS protocol;

[0087] Step 8: After step 7, the OTA software-to-vehicle link has been established. The OTA preparation service software sends a version alignment command to the vehicle to be prepared and monitors the preparation process in real time.

[0088] Step 9: After completing step 8, verify that the vehicle and the OTA maintenance service software have successfully communicated and ensure that the maintenance records (upgrade progress and upgrade results) have been successfully collected;

[0089] Step 10: If the LAN is affected and communication between the vehicle and the official OTA fails in step 9, the maintenance records that need to be transmitted will be stored in the edge device in offline mode and returned to the OTA maintenance service software after the wireless LAN is restored;

[0090] Step 11: Complete the vehicle preparation work, collect the preparation records (upgrade progress, upgrade results), disconnect the LAN and UPS power supply, and complete the preparation work of the vehicle to be prepared.

[0091] The foregoing description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications, equivalent substitutions, and improvements made by any person skilled in the art within the technical scope disclosed herein and within the spirit and principles of the present invention shall be covered by the scope of protection of the present invention. Furthermore, any matters not described in detail in this specification constitute prior art known to those skilled in the art.

Claims

1. A vehicle preparation service system for production lines without network coverage, characterized by: Including OTA maintenance service software, edge devices, UPS power supplies, wireless routing equipment, OBD conversion equipment, and terminal equipment; OTA provisioning service software is deployed in edge devices; The UPS power supply is responsible for supplying power to edge devices and wireless routing equipment; The OBD conversion device is connected to the actual vehicle through the OBD interface; The edge device, OBD conversion device and terminal device are all connected to the WIFI broadcast by the wireless routing device to communicate data in the local area network; The operating terminal device accesses the OTA preparation service software deployed in the edge device in the browser, sends the preparation information to the vehicle to be prepared via WIFI, and the preparation result is sent back to the OTA preparation service software by the vehicle.

2. The vehicle preparation service system for production lines without network coverage according to claim 1 is characterized by: Setting up the maintenance environment: In an environment without network coverage, prepare a UPS power supply with enough power to power the edge devices and wireless routing devices; deploy the OTA maintenance service software in the edge devices and install the wireless routing devices so that the actual vehicles connected to the wireless routing devices can access the OTA maintenance service software through the wireless network.

3. The vehicle preparation service system for production lines without network coverage according to claim 2 is characterized by: The edge device is used to connect the internal local area network to the Internet or external wide area network, and can provide OTA maintenance service software services through wireless routing equipment and wireless networks; The UPS power supply consists of five parts: rectifier, battery, inverter, static switch and control system; it converts AC power into regulated DC power; The wireless routing device can provide mutual access between edge devices and wired local area networks, ensuring normal communication within the coverage range of AP signals.

4. The vehicle preparation service system for production lines without network coverage according to claim 3 is characterized by: The function of switching the mode of the vehicle to be prepared is built into the OBD adapter. After the OBD adapter is connected to the vehicle, the vehicle VIN code can be read immediately and the VIN code information can be uploaded to the production line OTA preparation server. After the production line OTA preparation server gives a successful feedback message, the communication link is established and the current status of the vehicle can be read through the UDS protocol. Click to switch the three modes of the vehicle to switch the mode; Click to switch the vehicle's three modes: electrical inspection mode, factory mode, and general mode. After switching to general or factory mode, you need to verify the certificate connection status. The indicator light on the device will reflect the mode status, otherwise the indicator light will go out.

5. The vehicle preparation service system for production lines without network coverage according to claim 1 is characterized by: The terminal device obtains vehicle information and baseline information that is connected to the OTA preparation service software deployed on the edge device through the AP.

6. The vehicle preparation service system for production lines without network coverage according to claim 5 is characterized by: The baseline information includes the hardware version number, multiple ECU software version numbers corresponding to the hardware version number, and the upgrade data package of the corresponding software version; the OTA preparation service software sends the baseline information to the whole vehicle that needs to be batch prepared based on the vehicle information and hardware version number. If the sent information is consistent with the whole vehicle information, the corresponding multiple ECU software upgrade package information will be sent to the vehicle-side TBOX, and the upgrade package will be sent to the specific ECU through the central gateway to complete the ECU upgrade operation, and the upgrade progress and upgrade result data will be sent back to the OTA preparation service software deployed on the edge device.

7. The vehicle preparation service system for production lines without network coverage according to claim 6 is characterized by: Maintenance service refers to the unified management of the hardware and software version numbers corresponding to multiple ECUs inside the car. Through the maintenance service, the software of these ECUs can be kept at a specific version; the maintenance service relies on managing the baseline and performing baseline alignment operations to achieve it.

8. The vehicle preparation service system for production lines without network coverage according to claim 7 is characterized by: When there is network coverage, the actual vehicle directly connects to the OTA maintenance service software to obtain baseline data and perform ECU version management; When there is no network coverage, the actual vehicle cannot directly connect to the OTA maintenance service software and relies on connecting to the car diagnostic instrument handheld terminal device one by one to perform maintenance operations.

9. A method for providing vehicle preparation services in an environment without network coverage on a production line, characterized in that: The following steps are involved: Step 1: Prepare the UPS power supply and check whether the battery power meets the operation requirements. If it meets the requirements, deploy the UPS power supply in the actual business scenario and prepare for step 2; Step 2: Prepare normal edge devices and wireless routing equipment, use the UPS power supply arranged in step 1 to power them, and wait for step 3 to set up the network environment; Step 3: The edge device and wireless router are ready for LAN networking, ensuring normal communication within the LAN coverage area; Step 4: Deploy the OTA provisioning service software on the edge devices deployed in Steps 2 and 3 to ensure that services can be provided within the LAN environment established in Step 3. Step 5: Use the terminal device to access the local area network established in step 3 and access the OTA preparation service software deployed in the edge device in step 4; Step 6: After setting up the preparation environment from step 1 to step 5, connect the OBD conversion device to the vehicle to be prepared through the OBD interface and switch the vehicle mode to factory mode; Step 7: After switching the vehicle mode to factory mode in step 6, the vehicle to be prepared will connect to the OTA preparation service software via the UDS protocol; Step 8: After step 7, the OTA preparation service software and the vehicle to be prepared link has been established. The OTA preparation service software sends the version alignment command to the vehicle to be prepared and monitors the preparation process in real time. Step 9: After completing step 8, verify that the vehicle and the OTA maintenance service software have successfully communicated and ensure that the maintenance records have been successfully collected; Step 10: If the local area network (LAN) affects the communication between the vehicle and the OTA preparation service software, the preparation records that need to be transmitted will be stored in the edge device in offline mode and will be returned to the OTA preparation service software after the wireless LAN is restored. Step 11: Complete the vehicle preparation work, collect the preparation records, disconnect the LAN and UPS power supply, and end the preparation work for the vehicle to be prepared.

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