CN-121980214-A - Vehicle-mounted display screen black screen repairing method and device, vehicle and storage medium

CN121980214ACN 121980214 ACN121980214 ACN 121980214ACN-121980214-A

Abstract

The invention relates to the technical field of vehicle control and discloses a vehicle-mounted display screen black screen repairing method, a device, a vehicle and a storage medium, wherein the vehicle-mounted display screen black screen repairing method applied to a screen controller comprises the steps of sending an IIC handshake message to a vehicle main control unit in a preset period, and verifying whether a first response message fed back by the vehicle main control unit is received or not in the preset period; and if the first response message is not received after the preset times, carrying out hardware reset on the display screen through a reset pin. The invention replaces the traditional black screen repairing mode of manually breaking the small storage battery, does not need manual intervention of a user, can realize automatic emergency repairing of black screen faults, and greatly shortens repairing time.

Inventors

WANG CHAO
FAN YU
ZHAO FENG
WANG YONGLIANG

Assignees

梧桐车联(北京)网络科技有限公司

Dates

Publication Date: 20260505
Application Date: 20251224

Claims (13)

1. A method for repairing a black screen of a vehicle-mounted display screen, which is applied to a screen controller, the method comprising: transmitting an IIC handshake message to a vehicle main control unit in a preset period, and verifying whether a first response message fed back by the vehicle main control unit is received or not in the preset period; And if the first response message is not received after the preset times, carrying out hardware reset on the display screen through a reset pin.
2. The method according to claim 1, wherein the method further comprises: Re-sending the IIC handshake message to the vehicle main control unit after resetting and restarting, and verifying whether a second response message fed back by the vehicle main control unit is received or not in preset time; After resetting and restarting, verifying whether the unique identifier of the deserializing module is correct; If the second response message is received and the unique identifier of the deserializing module is correct, restoring the display of the vehicle-mounted display screen, and returning to the step of sending the IIC handshake message to the vehicle main control unit in a preset period; if the second response message is not received or the unique identification of the deserializing module is incorrect, determining that the repair of the vehicle-mounted display screen fails.
3. The method according to claim 2, wherein the method further comprises: And if the repair failure of the vehicle-mounted display screen is determined, sending a hardware fault notification.
4. The method for repairing the black screen of the vehicle-mounted display screen is characterized by being applied to a vehicle main control unit, and comprises the following steps: acquiring operation parameters of a vehicle-mounted display system; After detecting failure in repairing the vehicle-mounted display screen, inputting the operation parameters into a pre-trained fault diagnosis model, and outputting fault positioning information causing a black screen through the fault diagnosis model, wherein the vehicle-mounted display screen is repaired by a screen controller through hardware reset through a reset pin, the hardware reset is triggered by the screen controller exceeding a preset number of times and not receiving a first response message, the first response message is fed back by the vehicle main control unit in response to an IIC handshake message in a preset period, and the IIC handshake message is sent to the vehicle main control unit by the screen controller in the preset period.
5. The method of claim 4, wherein the obtaining the operating parameters of the in-vehicle display system includes obtaining an IIC message delay time, a unique identification of a deserializing module, a screen controller temperature, and a display screen supply voltage.
6. The method of claim 5, wherein the fault diagnosis model includes an input layer, a convolution layer, a long-short-term memory network layer, a feature fusion layer, and an output layer, inputting the operating parameters into a pre-trained fault diagnosis model, and outputting fault location information through the fault diagnosis model, comprising: Intercepting a preset time step for the operation parameters through the input layer to obtain current time step parameters; Extracting associated features from the current time step parameters through the convolution layer; extracting time sequence characteristics from the current time step parameters through the long-short-term memory network layer; Fusing the associated features and the time sequence features through the feature fusion layer to obtain fusion features; And classifying the fusion characteristics through the output layer to obtain fault positioning information.
7. The method of claim 6, wherein the chip lot number of the screen controller is bound to a vehicle unique identification, the method further comprising: and when the fault positioning information indicates that the screen controller is faulty, the chip batch number is sent to the cloud end, so that the cloud end determines the chip fault rate based on the chip batch number, and when the chip fault rate is greater than a preset threshold value, the cloud end inquires all the unique identifications of the corresponding bound vehicles according to the chip batch number.
8. The method according to claim 4, wherein the method further comprises: initializing a string adding module; After delaying for the first time, initializing a deserializing module; after delaying for a second time, verifying whether the unique identifier of the deserializing module is correct; If the unique identification of the deserializing module is correct, a control instruction is sent to the screen controller; and if the unique identification of the deserializing module is wrong, a first abnormal early warning message is sent.
9. The method of claim 4, wherein when the on-board display is not repaired, the method further comprises: Verifying the operation parameters by using the composite index; If the verification result shows that the operation parameters are abnormal, freezing the operation parameters in abnormal conditions, adding a time stamp to the operation parameters in abnormal conditions, and storing; And responding to the operation parameters in abnormal conditions, and sending a second abnormal early warning message.
10. A vehicle-mounted display screen black screen repair device, characterized by being applied to a screen controller, the device comprising: the handshake message sending module is used for sending an IIC handshake message to the vehicle main control unit in a preset period, and verifying whether a first response message fed back by the vehicle main control unit is received or not in the preset period; and the response verification module is used for carrying out hardware reset on the display screen through a reset pin if the first response message is not received after the preset times.
11. A vehicle-mounted display screen black screen repairing device, characterized by being applied to a vehicle main control unit, the device comprising: the operation parameter acquisition module is used for acquiring the operation parameters of the vehicle-mounted display system; The vehicle-mounted display screen is repaired by the screen controller through hardware reset of a reset pin, wherein the hardware reset is triggered by the screen controller exceeding the preset times and not receiving a first response message, the first response message is fed back by the vehicle main control unit in response to an IIC handshake message in a preset period, and the IIC handshake message is sent to the vehicle main control unit by the screen controller in the preset period.
12. A vehicle, characterized by comprising: A memory and a processor in communication with each other, the memory having stored therein computer instructions which, upon execution, cause the processor to perform the method of any of claims 1 to 3 or 4 to 9.
13. A computer-readable storage medium having stored thereon computer instructions for causing a computer to perform the method of any one of claims 1 to 3 or 4 to 9.

Description

Vehicle-mounted display screen black screen repairing method and device, vehicle and storage medium Technical Field The invention relates to the technical field of vehicle control, in particular to a vehicle-mounted display screen black screen repairing method and device, a vehicle and a storage medium. Background Along with the intelligent horizontal lifting of automobiles, an on-board display system becomes a human-computer interaction core, and a link of the on-board display system sequentially comprises a vehicle main control unit, a string adding module, an LVDS (Low Voltage differential signaling) wire harness, a string releasing module and a screen end controller. The vehicle-mounted display system has complex links and needs to withstand severe working conditions such as high temperature, electromagnetic interference and the like, so that black screen faults frequently occur, and the user experience is seriously affected. Once the vehicle-mounted display black screen fails, the related technology needs to manually cut off a small storage battery of the vehicle and then electrify to repair the small storage battery, so that the black screen repair efficiency is low and the vehicle-mounted display black screen is inflexible. Disclosure of Invention The invention provides a vehicle-mounted display screen black screen repairing method, a device, a vehicle and a storage medium, which are used for solving the problems of low vehicle-mounted display screen black screen repairing efficiency and inflexibility. In a first aspect, the invention provides a vehicle-mounted display screen black screen repairing method, which is applied to a screen controller, and the method comprises the steps of sending an IIC handshake message to a vehicle main control unit in a preset period, verifying whether a first response message fed back by the vehicle main control unit is received in the preset period, and carrying out hardware reset on a display screen through a reset pin if the first response message is not received for more than preset times. According to the technical means, the screen controller initiates the IIC handshake and verifies the response in a preset period, and when the response is not received for more than the preset times, the hardware reset is triggered, so that the traditional black screen repairing mode of manually breaking the small storage battery is replaced. The automatic emergency repair of the black screen fault can be realized without manual intervention of a user, the repair time is greatly shortened, the black screen repair is compressed to the second level from the minute level or even the hour level of manual operation, the efficiency and the convenience of the black screen repair of the vehicle-mounted display screen are greatly improved, meanwhile, the misoperation risk of a vehicle circuit possibly brought by manual operation is avoided, and the use stability of the vehicle-mounted display system is ensured. In some optional embodiments, the method further comprises the steps of retransmitting the IIC handshake message to the vehicle main control unit after reset and restarting, verifying whether a second response message fed back by the vehicle main control unit is received or not within a preset time, verifying whether the unique identifier of the deserializing module is correct after reset and restarting, recovering the display of the vehicle-mounted display screen if the second response message is received and the unique identifier of the deserializing module is correct, returning to the step of transmitting the IIC handshake message to the vehicle main control unit in a preset period, and determining that the vehicle-mounted display screen is failed to repair if the second response message is not received or the unique identifier of the deserializing module is incorrect. According to the technical means, the dual confirmation link of IIC handshake secondary verification and unique identification verification of the deserializing module is added after hardware reset, so that whether the black screen repair is successful or not can be accurately judged. If the verification is failed, the restoration failure is timely judged, the repeated abnormality of the display system caused by blind restarting can be avoided, the reliability and the accuracy of the black screen restoration are improved, meanwhile, a clear limit is defined for the follow-up fault investigation, and the extra loss of the invalid restoration action to the vehicle-mounted display system is reduced. In some alternative embodiments, the method further comprises sending a hardware failure notification if it is determined that the on-board display screen repair failed. According to the technical means, after the repair failure of the vehicle-mounted display screen is judged, the hardware fault notification sending mechanism is additionally arranged, so that the fault information can be quickly synchronized to the vehic