Fault diagnosis system and method for cabin display screen and automobile

Abstract

The invention discloses a fault diagnosis system and method for a cabin display screen and an automobile, and belongs to the technical field of display screen fault diagnosis, and the method comprises the steps: judging whether the fault phenomenon of a cabin display screen assembly is blank screen or poor touch; in the fault diagnosis mode, when the fault phenomenon is a black screen, whether the integrated touch display panel is always kept in a black screen state or turned on is judged; and the main body causing the black screen fault phenomenon is judged by analyzing the data stored in the data storage module or touching the integrated touch display panel and according to the brightness change of the integrated touch display panel after touching. And when the fault phenomenon is poor touch, touching the integrated touch display panel, and judging the main body causing the poor touch fault phenomenon according to the brightness change of the integrated touch display panel after touching. By means of the system and the method, the main body causing the fault phenomena of black screen and poor touch of the cabin display screen assembly can be visually judged.

Description

Technical Field

[0001] The present invention belongs to the technical field of display screen fault diagnosis, and in particular, relates to a cockpit display screen fault diagnosis system, method and vehicle. Background Art

[0002] With the development of intelligent automobiles, there are more and more cockpit display screen assemblies. When the cockpit display screen assembly has a black screen or poor touch, it is impossible to quickly locate the main body causing the black screen and poor touch, which makes troubleshooting difficult.

[0003] Patent CN114546698A discloses a method for diagnosing a vehicle display screen fault, including a display screen assembly and a vehicle computer assembly, wherein the display screen assembly is connected to the vehicle computer assembly via a communication interface and can communicate information with the vehicle computer assembly, and the display screen of the display screen assembly has an in-screen touch function, and an out-screen touch button is also provided outside the display screen, and the method includes the following steps: S1: determining a fault phenomenon of the display screen assembly;

[0004] S2: Operate the display screen to enter the self-check mode, at which time the display screen assembly and the vehicle computer assembly are disconnected from the signal connection; S3: In the self-check mode, according to the determination result of S1, select the corresponding diagnostic method to determine whether the fault is in the display screen assembly or the vehicle computer assembly. However, the technology disclosed in the patent can only determine whether the fault is in the display screen assembly or the vehicle computer assembly. After determining that the fault is in the display screen assembly, it is impossible to further determine which specific part of the display screen assembly has a problem. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a cockpit display screen fault diagnosis system, method and automobile in view of the deficiencies in the prior art, so as to achieve the purpose of being able to visually determine the main body of the fault phenomenon causing the black screen and poor touch of the cockpit display screen assembly.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] The present invention provides a fault diagnosis system for a cockpit display screen, comprising a vehicle-mounted cockpit domain controller and a cockpit display screen assembly, wherein the cockpit display screen assembly comprises a cockpit display screen module, a data storage module, a backlight control module, a power supply, a digital / analog sampling circuit, a microcontroller (MCU), a deserializer, a power connector and a video connector, the video connector being respectively connected to the vehicle-mounted cockpit domain controller and the deserializer; the deserializer being respectively connected to the microcontroller (MCU) and the cockpit display screen module; the cockpit display screen module being respectively connected to the microcontroller (MCU) and the backlight control module; the microcontroller (MCU) being respectively connected to the backlight control module and the data storage module; the input end (wakeup Pin enable pin) of the power connector being connected to the output end of the vehicle-mounted cockpit domain controller; the output end of the power connector being respectively connected to the input end of the digital / analog sampling circuit and the input end of the power supply; the output end of the digital / analog sampling circuit being connected to the input end of the microcontroller (MCU).

[0008] Furthermore, the cockpit display screen module includes a backlight module, an integrated touch display panel and a touch chip. The backlight module is connected to the backlight control module; the touch chip is respectively connected to the integrated touch display panel, a microcontroller (MCU) and a deserializer.

[0009] Furthermore, the vehicle cockpit domain controller communicates with the microcontroller (MCU) via a deserializer and a video connector.

[0010] Furthermore, the operating data of the backlight module, microcontroller (MCU), integrated touch display panel and touch chip in the cockpit display assembly are stored through the data storage module.

[0011] Furthermore, the integrated touch display panel and the touch chip are respectively provided with a first register and a second register.

[0012] The present invention also provides a method for diagnosing a fault of a cockpit display screen, the method comprising the following steps:

[0013] S1: Determine whether the fault phenomenon of the cockpit display screen assembly is a black screen or poor touch;

[0014] S2: If the result of the judgment in S1 is that the fault phenomenon is a black screen, then proceed to S301 to S305; if the result of the judgment in S1 is that the fault phenomenon is a poor touch, then proceed to S401 to S404;

[0015] S301: In a normal display mode of the integrated touch display panel, long press the upper right corner area of ​​the integrated touch display panel to enable the system to enter a fault diagnosis mode;

[0016] S302: In the fault diagnosis mode, if the integrated touch display panel remains in a black screen state, it is determined that the cockpit display assembly has a fault and the process proceeds to S303; if the integrated touch display panel lights up, the process proceeds to S304;

[0017] S303: Analyze the data stored in the data storage module. If the data stored in the data storage module contains data indicating abnormal operation of the backlight module, it is determined that the backlight module is faulty; if the data stored in the data storage module contains data indicating abnormal operation of the integrated touch display panel, it is determined that the integrated touch display panel is faulty; if the data stored in the data storage module contains both data indicating abnormal operation of the backlight module and data indicating abnormal operation of the integrated touch display panel, it is determined that both the backlight module and the integrated touch display panel are faulty;

[0018] S304: Touch the integrated touch display panel. If the integrated touch display panel displays a black screen, flashes "on-off", becomes darker or brighter after the touch, it is determined that the vehicle cockpit domain controller has a fault.

[0019] S305: long-press the lower right corner of the integrated touch display panel to exit the system from the fault diagnosis mode;

[0020] S401: In a normal display mode of the integrated touch display panel, long press the upper right corner area of ​​the integrated touch display panel;

[0021] S402: Touch the integrated touch display panel and determine whether the brightness of the integrated touch display panel changes after the touch. If the brightness of the integrated touch display panel does not change after the touch, it means that S401 does not cause the system to enter the fault diagnosis mode, and it is determined that the touch chip has a fault; if the brightness of the integrated touch display panel changes after the touch, it means that S401 causes the system to enter the fault diagnosis mode, and enter step S403;

[0022] S403: After the integrated touch display panel is touched in S402, if the integrated touch display panel is black, it is determined that the microcontroller (MCU) has a fault; if the integrated touch display panel becomes darker, brighter, or flashes "on-off", it is determined that the vehicle cockpit domain controller has a fault;

[0023] S404: If S401 causes the system to enter the fault diagnosis mode, the system is caused to exit the fault diagnosis mode by long pressing the lower right corner area of ​​the integrated touch display panel.

[0024] Furthermore, the long pressing time of the upper right corner area of ​​the integrated touch display panel and the long pressing time of the lower right corner area of ​​the integrated touch display panel is not less than a preset time.

[0025] Further, the preset time is 10 seconds.

[0026] In addition, the present invention also mentions a car, which is equipped with the aforementioned cockpit display screen fault diagnosis system and uses the aforementioned cockpit display screen fault diagnosis method to control the system.

[0027] The fault diagnosis system and method of the present invention have the following advantages:

[0028] (1) The present invention uses a visual fault diagnosis method to determine the main body of the fault phenomenon that causes the black screen and poor touch of the cockpit display assembly, that is, by observing the brightness change of the integrated touch display panel to determine the main body of the fault phenomenon that causes the black screen and poor touch of the cockpit display assembly, which is more convenient and intuitive.

[0029] (2) The present invention stores the operating data of the backlight module, microcontroller (MCU), integrated touch display panel and touch chip in the cockpit display assembly through the data storage module, and then through subsequent analysis of the data stored in the data storage module, it is possible to further determine the main body that causes the black screen and poor touch of the cockpit display assembly.

[0030] (3) Through the system and method of the present invention, the main body causing the black screen and poor touch of the cockpit display assembly can be visually determined. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] This specification includes the following drawings, which show the following contents:

[0032] Figure 1 It is a logical structure block diagram of a fault diagnosis system of a cockpit display screen of the present invention;

[0033] Figure 2 It is a hardware structure diagram of a fault diagnosis system of a cockpit display screen of the present invention;

[0034] Figure 3 It is a logic block diagram of a cockpit display screen fault diagnosis method of the present invention;

[0035] Figure 4 It is a flowchart of a method for diagnosing a fault of a cockpit display screen according to the present invention;

[0036] Figure 5 It is a schematic diagram of the area division of the integrated touch display panel in the cockpit display assembly in the system of the present invention.

[0037] Explanation of the accompanying drawings: 1. Vehicle-mounted cockpit domain controller; 2. Cockpit display assembly; 21. Cockpit display module; 22. Data storage module; 23. Backlight control module; 24. Power supply; 25. Digital / analog sampling circuit; 26. Microcontroller (MCU); 27. Deserializer; 28. Power connector; 29. ​​Video connector; 211. Backlight module; 212. Integrated touch display panel; 213. Touch chip. DETAILED DESCRIPTION

[0038] The specific implementation methods of the present invention are further explained in detail below by describing the embodiments with reference to the accompanying drawings, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention and facilitating their implementation.

[0039] Figure 1 The present invention is a logical structure block diagram of a cockpit display screen fault diagnosis system, including a vehicle-mounted cockpit domain controller 1 and a cockpit display screen assembly 2, wherein the cockpit display screen assembly 2 includes a cockpit display screen module 21, a data storage module 22, a backlight control module 23, a power supply 24, a digital / analog sampling circuit 25, a microcontroller (MCU) 26, a deserializer 27, a power connector 28 and a video connector 29, the video connector 29 is respectively connected to the vehicle-mounted cockpit domain controller 1 and the deserializer 27; the deserializer 27 is also respectively connected to the microcontroller (MCU) 26 and the cockpit display screen module 21; the cockpit display screen module 21 is also respectively connected to the microcontroller (MCU) 26 and the backlight control module 23; the microcontroller (MCU) 26 is also respectively connected to the backlight control module 23 and the data storage module 22; the input end (wakeup) of the power connector 28 Pin enable pin) is connected to the output end of the vehicle cockpit domain controller 1; the output end of the power connector 28 is respectively connected to the input end of the digital / analog sampling circuit 25 and the input end of the power supply 24; the output end of the digital / analog sampling circuit 25 is connected to the input end of the microcontroller (MCU) 26. Among them, the cockpit display screen module 21 includes a backlight module 211, an integrated touch display panel 212 and a touch chip 213. The backlight module 211 is connected to the backlight control module 23; the touch chip 213 is respectively connected to the integrated touch display panel 212, the microcontroller (MCU) 26 and the deserializer 27. In addition, the vehicle-mounted cockpit domain controller 1 communicates with the microcontroller (MCU) 26 through the deserializer 27 and the video connector 29; the operating data of the backlight module 211, the microcontroller (MCU) 26, the integrated touch display panel 212 and the touch chip 213 in the cockpit display assembly 2 are stored through the data storage module 22; the integrated touch display panel 212 and the touch chip 213 are respectively provided with a first register and a second register.

[0040] Figure 2The hardware structure diagram of the fault diagnosis system of the cockpit display screen of the present invention is composed of Figure 2 It can be seen that the microcontroller (MCU) 26 is connected to the data storage module 22 via SPI; the output end of the power connector 28 is connected to the KL30 pin of the power supply 24; and the output end of the digital / analog sampling circuit 25 is respectively connected to the ADC pin and the INT pin of the microcontroller (MCU) 26. During the operation of the system, the video connector 29 and the vehicle cockpit domain controller 1, the video connector 29 and the deserializer 27, and the deserializer 27 and the touch chip 213 all communicate via LVDS; the touch chip 213 and the microcontroller (MCU) 26, and the deserializer 27 and the microcontroller (MCU) 26 all communicate via the I2C protocol; a wakeup signal is sent to the power connector 28 via the vehicle cockpit domain controller 1; a wakeup signal is sent to the digital / analog sampling circuit 25 via the power connector 28; an IRQ signal is sent to the microcontroller (MCU) 26 via the deserializer 27; a Lock signal is sent to the deserializer 27 via the microcontroller (MCU) 26; an Enable and PWM signals are sent to the backlight control module 23 via the microcontroller (MCU) 26; a Fault signal is sent to the microcontroller (MCU) 26 via the backlight control module 23; and the cockpit display assembly 2 is powered by the power supply 24.

[0041] Figure 1 and Figure 2 In the figure, the digital / analog sampling circuit 25 is an existing circuit; the backlight module 211 and the backlight control module 23 can respectively adopt the existing backlight module 211 and the existing backlight control module 23; the data storage module 22 is used to store the operating data of the backlight module 211, the microcontroller (MCU) 26, the integrated touch display panel 212 and the touch chip 213 in the cockpit display assembly 2, for example, a data storage device can be used.

[0042] Combine the following Figure 1 and Figure 2The working process and principle of the fault diagnosis system of the cockpit display screen of the present invention are introduced as follows. By observing whether the integrated touch display panel 212 has a black screen fault phenomenon or a poor touch fault phenomenon, it is judged whether the fault phenomenon of the cockpit display screen assembly 2 is a black screen or a poor touch. When the result of the judgment is that the fault phenomenon of the cockpit display screen assembly 2 is a black screen, then in the normal display mode of the integrated touch display panel 212, the system enters the fault diagnosis mode by long pressing the upper right corner area of ​​the integrated touch display panel 212. After the system enters the fault diagnosis mode by long pressing the upper right corner area of ​​the integrated touch display panel 212, if the integrated touch display panel 212 remains in a black screen state, it is judged that the cockpit display screen assembly 2 has a fault. At this time, if you want to further determine which part of the cockpit display screen assembly 2 has a fault, it is necessary to analyze the data stored in the data storage module 22. When the data storage module 22 is analyzed, When data indicating abnormal operation of the backlight module 211 is stored in the storage module 22, it is determined that a fault has occurred in the backlight module 211, and the specific problem of the fault in the backlight module 211 can be found out by analyzing the data indicating abnormal operation of the backlight module 211, so as to facilitate subsequent rectification; when it is analyzed that the fault code data of the first register is stored in the data storage module 22, it is determined that a fault has occurred in the integrated touch display panel 212; when it is analyzed that data indicating abnormal operation of the backlight module 211 and the fault code data of the first register are stored in the data storage module 22, it is determined that both the backlight module 211 and the integrated touch display panel 212 are faulty. When the result of the judgment is that the fault phenomenon of the cockpit display screen assembly 2 is a black screen, then in the normal display mode of the integrated touch display panel 212, the system enters the fault diagnosis mode by long pressing the upper right corner area of ​​the integrated touch display panel 212. After the system enters the fault diagnosis mode by long pressing the upper right corner area of ​​the integrated touch display panel 212, if the integrated touch display panel 212 lights up, then after the integrated touch display panel 212 lights up, it is necessary to touch the integrated touch display panel 212, and judge the main body causing the black screen fault phenomenon by observing the brightness change of the integrated touch display panel 212 after touching. If the brightness of the integrated touch display panel 212 changes after touching, If the integrated touch display panel 212 shows a black screen, flickers "on-off", becomes darker or brighter, it is judged that the vehicle cockpit domain controller 1 has a fault. After touching the integrated touch display panel 212, if the integrated touch display panel 212 shows a black screen, becomes darker or brighter, it means that the vehicle cockpit domain controller 1 has not read the touch signal, and it is judged that the vehicle cockpit domain controller 1 has a fault; if the integrated touch display panel 212 flickers "on-off", it means that the vehicle cockpit domain controller 1 has read the touch signal, but the vehicle cockpit domain controller 1 has not correctly processed the touch signal, and it is judged that the vehicle cockpit domain controller 1 has a fault.After determining the subject causing the black screen fault phenomenon, long press the lower right corner area of ​​the integrated touch display panel 212 to make the system exit the fault diagnosis mode. When the result of the determination is that the fault phenomenon of the cockpit display assembly 2 is poor touch, long press the upper right corner area of ​​the integrated touch display panel 212 in the normal display mode of the integrated touch display panel 212. After the long press of the upper right corner area of ​​the integrated touch display panel 212 ends, touch the integrated touch display panel 212 and determine whether the brightness of the integrated touch display panel 212 changes after the touch. If the brightness of the integrated touch display panel 212 does not change after the touch, it means that the touch chip 213 does not recognize the touch signal, that is, it means that S401 does not make the system enter the fault diagnosis mode, and it is determined that the touch chip 213 is not able to identify the touch signal. The chip 213 fails. After determining that the touch chip 213 fails, if you want to find out the specific cause of the touch chip 213 failure, you need to analyze the data stored in the data storage module 22. When it is analyzed that the data storage module 22 stores the fault code data of the second register, the specific cause of the touch chip 213 failure can be further analyzed based on the fault code data. When the result of the judgment is that the fault phenomenon of the cockpit display assembly 2 is poor touch, then in the normal display mode of the integrated touch display panel 212, long press the upper right corner area of ​​the integrated touch display panel 212, and then After the long press of the upper right corner area of ​​the integrated touch display panel 212 is completed, the integrated touch display panel 212 is touched to determine whether the brightness of the integrated touch display panel 212 changes after the touch. If the brightness of the integrated touch display panel 212 changes after the touch, it means that the system has entered the fault diagnosis mode by long pressing the upper right corner area of ​​the integrated touch display panel 212. In the fault diagnosis mode, if the integrated touch display panel 212 is black, it means that the microcontroller (MCU) 26 has not pulled the vehicle cockpit domain controller 1 interrupt, and it is determined that the microcontroller (MCU) 26 has a fault. After determining that the microcontroller ( When the microcontroller (MCU) 26 fails, the specific cause of the failure of the microcontroller (MCU) 26 can be analyzed through the data of abnormal operation of the microcontroller (MCU) 26 stored in the data storage module 22; if the integrated touch display panel 212 becomes dark, it means that the vehicle cockpit domain controller 1 does not read the touch signal, and it is determined that the vehicle cockpit domain controller 1 has a fault; if the integrated touch display panel 212 becomes brighter or flashes "on-off", it means that the vehicle cockpit domain controller 1 has read the touch signal, but the vehicle cockpit domain controller 1 does not correctly process the touch signal, and it is determined that the vehicle cockpit domain controller 1 has a fault. After determining the main body causing the poor touch failure phenomenon, the system exits the fault diagnosis mode by long pressing the lower right corner area of ​​the integrated touch display panel 212.

[0043] Figure 3It is a logic block diagram of a cockpit display screen fault diagnosis method of the present invention. Figure 3 As can be seen in the figure, first determine whether the cockpit display screen assembly 2 has a black screen fault phenomenon or a poor touch fault phenomenon. If it is a black screen fault phenomenon, then in the normal display mode of the integrated touch display panel 212, the system enters the fault diagnosis mode by long pressing the upper right corner area of ​​the integrated touch display panel 212. In the fault diagnosis mode, the state of the integrated touch display panel 212 when the integrated touch display panel 212 is not touched is determined. When the integrated touch display panel 212 remains in a black screen state, it indicates that the cockpit display screen assembly 2 has a fault; when the integrated touch display panel 212 lights up, then the main body causing the black screen fault is determined by touching the integrated touch display panel 212 and judging the brightness change of the integrated touch display panel 212 after touching. If the integrated touch display panel 212 becomes dark, bright, black, or flashes "on-off" after touching, it indicates that the vehicle-mounted cockpit domain controller 1 has a fault; after determining the main body causing the black screen fault phenomenon, the system exits the fault diagnosis mode by long pressing the lower right corner area of ​​the integrated touch display panel 212. If it is a poor touch fault phenomenon, in the normal display mode of the integrated touch display panel 212, long press the upper right corner area of ​​the integrated touch display panel 212. After the long press of the upper right corner area of ​​the integrated touch display panel 212 ends, touch the integrated touch display panel 212 and determine whether the brightness of the integrated touch display panel 212 changes after touching. If the brightness of the integrated touch display panel 212 does not change after touching, it indicates that the system has not entered the fault diagnosis mode, which means that the touch chip 213 has a fault; if the brightness of the integrated touch display panel 212 changes after touching, it indicates that the system has entered the fault diagnosis mode. In the fault diagnosis mode, if the integrated touch display panel 212 is black, it means that the microcontroller (MCU) 26 has a fault. If the integrated touch display panel 212 becomes dark, bright, or flashes "on-off", it means that the vehicle-mounted cockpit domain controller 1 has a fault; after determining the main body causing the poor touch fault phenomenon, the system exits the fault diagnosis mode by long pressing the lower right corner area of ​​the integrated touch display panel 212.

[0044] Figure 4 The present invention is a flowchart of a method for diagnosing a fault of a cockpit display screen, the method comprising the following steps:

[0045] S1: Determine whether the fault phenomenon of the cockpit display assembly 2 is a black screen or poor touch, that is, the corresponding Figure 4 Specifically, by observing whether the integrated touch display panel 212 has a black screen fault phenomenon or a poor touch fault phenomenon, it is determined whether the fault phenomenon of the cockpit display screen assembly 2 is a black screen or a poor touch.

[0046] S2: If the result of S1 is that the fault phenomenon is a black screen, then enter S301 to S305; if the result of S1 is that the fault phenomenon is a poor touch, then enter S401 to S404, corresponding to Figure 4 Specifically, when the judgment result in S1 is that the fault phenomenon of the cockpit display screen assembly 2 is a black screen, S301 to S305 are used to judge the subject causing the black screen fault phenomenon of the cockpit display screen assembly 2; when the judgment result in S1 is that the fault phenomenon of the cockpit display screen assembly 2 is poor touch, S401 to S404 are used to judge the subject causing the poor touch fault phenomenon of the cockpit display screen assembly 2.

[0047] S301: In the normal display mode of the integrated touch display panel 212, the system enters the fault diagnosis mode by long pressing the upper right corner area of ​​the integrated touch display panel 212, that is, corresponding to Figure 4 S301 in.

[0048] S302: In the fault diagnosis mode, if the integrated touch display panel 212 remains in a black screen state, it is determined that the cockpit display assembly 2 has a fault and enters S303; if the integrated touch display panel 212 lights up, enter S304; that is, the corresponding Figure 4 Specifically, when the system enters the fault diagnosis mode by long pressing the upper right corner area of ​​the integrated touch display panel 212, if the integrated touch display panel 212 remains in a black screen state, it is determined that the cockpit display screen assembly 2 has a fault. At this time, if you want to further determine which part of the cockpit display screen assembly 2 has a fault, you need to enter S303; when the system enters the fault diagnosis mode by long pressing the upper right corner area of ​​the integrated touch display panel 212, if the integrated touch display panel 212 lights up, enter S304.

[0049] S303: Analyze the data stored in the data storage module 22. If the data stored in the data storage module 22 contains data indicating abnormal operation of the backlight module 211, it is determined that the backlight module 211 is faulty; if the data stored in the data storage module 22 contains data indicating abnormal operation of the integrated touch display panel 212, it is determined that the integrated touch display panel 212 is faulty; if the data stored in the data storage module 22 contains data indicating abnormal operation of both the backlight module 211 and the integrated touch display panel 212, it is determined that both the backlight module 211 and the integrated touch display panel 212 are faulty. Figure 4S303 in. Specifically, when it is determined in S302 that the cockpit display screen assembly 2 has a fault, if it is desired to further determine which part of the cockpit display screen assembly 2 has a fault, it is necessary to analyze the data stored in the data storage module 22. When it is analyzed that the data storage module 22 stores data indicating abnormal operation of the backlight module 211, it is determined that the backlight module 211 has a fault, and the specific problem of the fault in the backlight module 211 can be found out by analyzing the data indicating abnormal operation of the backlight module 211, so as to facilitate subsequent rectification; when it is analyzed that the data storage module 22 stores fault code data of the first register, it is determined that the integrated touch display panel 212 has a fault; when it is analyzed that the data storage module 22 stores data indicating abnormal operation of the backlight module 211 and fault code data of the first register, it is determined that both the backlight module 211 and the integrated touch display panel 212 have a fault.

[0050] S304: Touch the integrated touch display panel 212. If the integrated touch display panel 212 appears black, flashes "on-off", becomes darker or brighter after the touch, it is determined that the vehicle cockpit domain controller 1 has a fault, that is, the corresponding Figure 4 S304 in. Specifically, when the integrated touch display panel 212 lights up in S302, it is necessary to touch the integrated touch display panel 212, and judge the subject causing the black screen fault phenomenon by observing the brightness change of the integrated touch display panel 212 after touching. If the brightness of the integrated touch display panel 212 changes after touching, that is, the integrated touch display panel 212 appears black screen, "on-off" flashing, darkening or brightening, it is judged that the vehicle cockpit domain controller 1 has a fault. After touching the integrated touch display panel 212, when the integrated touch display panel 212 appears black, dims or brightens, it means that the vehicle cockpit domain controller 1 has not read the touch signal, and it is judged that the vehicle cockpit domain controller 1 has a fault; when the integrated touch display panel 212 flashes "on-off", it means that the vehicle cockpit domain controller 1 has read the touch signal, but the vehicle cockpit domain controller 1 has not correctly processed the touch signal, and it is judged that the vehicle cockpit domain controller 1 has a fault.

[0051] S305: The system exits the fault diagnosis mode by long pressing the lower right corner area of ​​the integrated touch display panel 212, corresponding to Figure 4 Specifically, after determining the main body causing the black screen fault phenomenon, the system exits the fault diagnosis mode by long pressing the lower right corner area of ​​the integrated touch display panel 212.

[0052] S401: In the normal display mode of the integrated touch display panel 212, long press the upper right corner area of ​​the integrated touch display panel 212, that is, the corresponding Figure 4 S401 in.

[0053] S402: Touch the integrated touch display panel 212, and determine whether the brightness of the integrated touch display panel 212 changes after the touch. If the brightness of the integrated touch display panel 212 does not change after the touch, it means that S401 does not cause the system to enter the fault diagnosis mode, and it is determined that the touch chip 213 has a fault; if the brightness of the integrated touch display panel 212 changes after the touch, it means that S401 causes the system to enter the fault diagnosis mode, and enters step S403, which corresponds to Figure 4 S402 in. Specifically, after the long press on the upper right corner area of ​​the integrated touch display panel 212 ends, the integrated touch display panel 212 is touched and it is determined whether the brightness of the integrated touch display panel 212 changes after the touch. If the brightness of the integrated touch display panel 212 does not change after the touch, it means that the touch chip 213 does not recognize the touch signal, that is, it means that S401 does not make the system enter the fault diagnosis mode, then it is determined that the touch chip 213 has a fault. After it is determined that the touch chip 213 has a fault, if you want to find out the specific cause of the fault of the touch chip 213, you need to analyze the data stored in the data storage module 22. When it is analyzed that the data storage module 22 stores the fault code data of the second register, the specific cause of the fault of the touch chip 213 can be further analyzed according to the fault code data; if the brightness of the integrated touch display panel 212 changes, it means that S401 has made the system enter the fault diagnosis mode, then enter step S403.

[0054] S403: After the integrated touch display panel 212 is touched in S402, if the integrated touch display panel 212 is black, it is determined that the microcontroller (MCU) 26 has a fault; if the integrated touch display panel 212 becomes dark, bright, or flashes "on-off", it is determined that the vehicle cockpit domain controller 1 has a fault, that is, the corresponding Figure 4S403 in. Specifically, in the fault diagnosis mode, if the integrated touch display panel 212 is black, it means that the microcontroller (MCU) 26 has not pulled the vehicle cockpit domain controller 1 interrupt, and it is determined that the microcontroller (MCU) 26 has a fault. After it is determined that the microcontroller (MCU) 26 has a fault, the specific cause of the microcontroller (MCU) 26 fault can be analyzed through the data of the abnormal operation of the microcontroller (MCU) 26 stored in the data storage module 22; if the integrated touch display panel 212 becomes dark, it means that the vehicle cockpit domain controller 1 has not read the touch signal, and it is determined that the vehicle cockpit domain controller 1 has a fault; if the integrated touch display panel 212 becomes bright or flashes "on-off", it means that the vehicle cockpit domain controller 1 has read the touch signal, but the vehicle cockpit domain controller 1 has not correctly processed the touch signal, and it is determined that the vehicle cockpit domain controller 1 has a fault.

[0055] S404: If S401 causes the system to enter the fault diagnosis mode, the system exits the fault diagnosis mode by long pressing the lower right corner area of ​​the integrated touch display panel 212, that is, corresponding to Figure 4 Specifically, after determining the subject causing the poor touch fault phenomenon, the system exits the fault diagnosis mode by long pressing the lower right corner area of ​​the integrated touch display panel 212.

[0056] In addition, the long press time of the upper right corner area of ​​the integrated touch display panel 212 and the long press time of the lower right corner area of ​​the integrated touch display panel 212 is not less than the preset time, wherein the preset time in the present invention is 10 seconds, but the preset time is not limited to 10 seconds, but can be set according to specific needs.

[0057] Figure 5 Schematic diagram of the area division of the integrated touch display panel 212 in the cockpit display assembly 2 in the system of the present invention, Figure 5 It can be seen that in the present invention, the integrated touch display panel 212 is divided into four areas, namely, an upper left corner area, a lower left corner area, an upper right corner area, and a lower right corner area.

[0058] In addition, the present invention also mentions a car, which is equipped with the aforementioned cockpit display screen fault diagnosis system and uses the aforementioned cockpit display screen fault diagnosis method to control the system.

[0059] The present invention is described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-mentioned methods. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention; or the above concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A cockpit display screen fault diagnosis system, characterized in that: It includes a vehicle-mounted cockpit domain controller and a cockpit display screen assembly, wherein the cockpit display screen assembly includes a cockpit display screen module, a data storage module, a backlight control module, a power supply, a digital / analog sampling circuit, a microcontroller (MCU), a deserializer, a power connector and a video connector, and the video connector is respectively connected to the vehicle-mounted cockpit domain controller and the deserializer; the deserializer is also respectively connected to the microcontroller (MCU) and the cockpit display screen module; the cockpit display screen module is also respectively connected to the microcontroller (MCU) and the backlight control module; the microcontroller (MCU) is also respectively connected to the backlight control module and the data storage module; the input end (wakeup Pin enable pin) of the power connector is connected to the output end of the vehicle-mounted cockpit domain controller; the output end of the power connector is respectively connected to the input end of the digital / analog sampling circuit and the input end of the power supply; the output end of the digital / analog sampling circuit is connected to the input end of the microcontroller (MCU).

2. A cockpit display screen fault diagnosis system as claimed in claim 1, characterized in that: The cockpit display screen module includes a backlight module, an integrated touch display panel and a touch chip. The backlight module is connected to a backlight control module; the touch chip is respectively connected to the integrated touch display panel, a microcontroller (MCU) and a deserializer.

3. A cockpit display screen fault diagnosis system as claimed in claim 1, characterized in that: The vehicle-mounted cockpit domain controller communicates with the microcontroller (MCU) via a deserializer and a video connector.

4. A cockpit display screen fault diagnosis system as claimed in claim 2, characterized in that: The data storage module is used to store the operating data of the backlight module, the microcontroller (MCU), the integrated touch display panel and the touch chip in the cockpit display assembly.

5. A cockpit display screen fault diagnosis system as claimed in claim 2, characterized in that: The integrated touch display panel and the touch chip are respectively provided with a first register and a second register.

6. A method for diagnosing a cockpit display screen fault according to any one of claims 1 to 5, characterized in that: The method comprises the following steps: S1: Determine whether the fault phenomenon of the cockpit display screen assembly is a black screen or poor touch; S2: If the result of the judgment in S1 is that the fault phenomenon is a black screen, then proceed to S301 to S305; if the result of the judgment in S1 is that the fault phenomenon is a poor touch, then proceed to S401 to S404; S301: In a normal display mode of the integrated touch display panel, long press the upper right corner area of ​​the integrated touch display panel to enable the system to enter a fault diagnosis mode; S302: In the fault diagnosis mode, if the integrated touch display panel remains in a black screen state, it is determined that the cockpit display assembly has a fault and the process proceeds to S303; if the integrated touch display panel lights up, the process proceeds to S304; S303: Analyze the data stored in the data storage module. If the data stored in the data storage module contains data indicating abnormal operation of the backlight module, it is determined that the backlight module is faulty; if the data stored in the data storage module contains data indicating abnormal operation of the integrated touch display panel, it is determined that the integrated touch display panel is faulty; if the data stored in the data storage module contains both data indicating abnormal operation of the backlight module and data indicating abnormal operation of the integrated touch display panel, it is determined that both the backlight module and the integrated touch display panel are faulty; S304: Touch the integrated touch display panel. If the integrated touch display panel goes black, flashes "on-off", becomes darker or brighter after the touch, it is determined that the vehicle cockpit domain controller has a fault. S305: long-press the lower right corner of the integrated touch display panel to exit the system from the fault diagnosis mode; S401: In a normal display mode of the integrated touch display panel, long press the upper right corner area of ​​the integrated touch display panel; S402: Touch the integrated touch display panel and determine whether the brightness of the integrated touch display panel changes after the touch. If the brightness of the integrated touch display panel does not change after the touch, it means that S401 does not cause the system to enter the fault diagnosis mode, and it is determined that the touch chip has a fault; if the brightness of the integrated touch display panel changes after the touch, it means that S401 causes the system to enter the fault diagnosis mode, and enter step S403; S403: After the integrated touch display panel is touched in S402, if the integrated touch display panel is black, it is determined that the microcontroller (MCU) has a fault; if the integrated touch display panel becomes darker, brighter, or flashes "on-off", it is determined that the vehicle cockpit domain controller has a fault; S404: If S401 causes the system to enter the fault diagnosis mode, the system is caused to exit the fault diagnosis mode by long pressing the lower right corner area of ​​the integrated touch display panel.

7. A cockpit display screen fault diagnosis system as claimed in claim 6, characterized in that: The long pressing time of the upper right corner area of ​​the integrated touch display panel and the long pressing time of the lower right corner area of ​​the integrated touch display panel shall not be less than the preset time.

8. A cockpit display screen fault diagnosis system as claimed in claim 7, characterized in that: The preset time is 10 seconds.

9. A car, characterized in that: The automobile is equipped with a cockpit display screen fault diagnosis system as described in any one of claims 1 to 5, and the cockpit display screen fault diagnosis method as described in any one of claims 6 to 9 is used to control the system.

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