Instrument abnormal vehicle speed recognition and emergency display method and system and vehicle

Abstract

The invention relates to a method and a system for recognizing and emergently displaying abnormal vehicle speed of an instrument and a vehicle, relates to the field of intelligent cabins, and aims to solve the problem that the instrument cannot normally display the vehicle speed of the instrument due to system abnormality or communication failure in the prior art. The method comprises the following steps that a central control screen receives a whole vehicle speed related signal and an instrument external display vehicle speed signal for accounting and backup, and when the central control screen judges that vehicle speed display is abnormal, the instrument display vehicle speed is displayed through the same algorithm. When the current system of the instrument is abnormal, a user can quickly see the vehicle speed through the central control screen, and normal driving and driving safety of the vehicle are ensured.

Description

Technical Field

[0001] The invention relates to a method, a system and a vehicle for identifying and urgently displaying abnormal vehicle speed on an instrument, and in particular to a solution for stably and safely displaying vehicle speed in the event of an instrument failure. Background Art

[0002] With the rapid development of the automobile market industry, the market demand is also increasing, and the automobile instrument is an indispensable display terminal for automobiles. Once the system is abnormal, the instrument interface will appear black screen, gray screen and other problems that cannot display the instrument interface normally, making it impossible for the driver to understand the vehicle's speed information in real time, affecting the normal driving of the vehicle, and posing certain safety hazards.

[0003] Many car companies attach great importance to the safety and stability of this component system, and often use proprietary chips and related system solutions to achieve instrument displays with higher functional safety levels, which increases system complexity and related software and hardware costs. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to solve the problem in the prior art that the vehicle speed cannot be displayed normally due to abnormal vehicle speed in the instrument operating system, affecting the normal driving of the vehicle and posing a safety hazard. A method, system and vehicle for abnormal vehicle speed recognition and emergency display of an instrument are provided, which can quickly provide a speed display interface for the user when the current vehicle speed of the instrument is abnormal, thereby ensuring the normal driving and driving safety of the vehicle.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: a method for identifying and urgently displaying abnormal vehicle speed on an instrument, comprising the following steps: the instrument normally receives vehicle speed-related signals and converts and displays them, and at the same time displays the vehicle speed externally to other demand controllers; the central control screen receives vehicle speed-related signals and the vehicle speed signal displayed externally on the instrument for calculation and backup; when the central control screen determines that the speed display is abnormal, the central control screen displays the vehicle speed through the same algorithm.

[0006] Further, the central control screen determines that the vehicle speed display is abnormal as follows: when the central control screen cannot receive the vehicle speed signal displayed on the instrument but can receive the vehicle speed-related signal, it is determined that the vehicle speed display on the instrument is abnormal;

[0007] Furthermore, the central control screen cannot receive the correct vehicle speed signal from the instrument, including instrument communication failure and system failure.

[0008] Furthermore, when the central control screen determines that the interface display is abnormal, the central control screen forwards the displayed vehicle speed calculated by the MCU to the central control screen SOC, and the central control screen SOC sends it to the central control screen display via LVDS.

[0009] The present invention also provides an instrument abnormal vehicle speed recognition and emergency display system, comprising an instrument and a central control screen; The instrument includes an instrument MCU, an instrument SOC, an instrument LVDS, and an instrument display; The central control screen includes a central control screen MCU, a central control screen SOC, a central control screen LVDS, a central control screen display, and the instrument and the central control screen are independent of each other and communicate through a CAN bus; The instrument MCU is used to communicate with the central control screen MCU to calculate and display the vehicle speed; The central control screen MCU determines whether there is an abnormality in the vehicle speed displayed on the instrument panel. When the instrument panel is abnormal, the central control screen MCU forwards the calculated vehicle speed displayed on the instrument panel to the central control screen SOC, and the central control screen SOC sends it to the central control screen display via LVDS.

[0010] Preferably, the abnormal vehicle speed information of the instrument is transmitted to the MCU of the central control screen via the CAN data twisted pair cable, which can save more hardware costs.

[0011] The present invention also provides a vehicle, wherein the vehicle is equipped with the instrument abnormal vehicle speed recognition and emergency display system. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The present invention is a schematic flow chart of a method for identifying and urgently displaying abnormal vehicle speed on an instrument.

[0013] Figure 2 The present invention is a schematic flow chart of an application example of a method for identifying and urgently displaying abnormal vehicle speed on an instrument panel.

[0014] Figure 3 The present invention is a module schematic diagram of an instrument abnormal vehicle speed recognition and emergency display system. DETAILED DESCRIPTION

[0015] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0016] Embodiment 1 This embodiment discloses a method for identifying and urgently displaying abnormal vehicle speed on an instrument panel. Figure 1 .

[0017] A method for abnormal vehicle speed recognition and emergency display of an instrument comprises the following steps: the instrument normally receives vehicle speed related signals and converts and displays them, and at the same time displays the vehicle speed externally to other demand controllers.

[0018] S110: The central control screen obtains the vehicle speed displayed on the instrument panel and the actual vehicle speed.

[0019] S120, the central control screen cannot receive the vehicle speed displayed on the instrument panel normally, but can receive the actual vehicle speed normally.

[0020] S130, the central control screen calculates based on the actual vehicle speed and the displayed vehicle speed.

[0021] S140, the central control screen displays the vehicle speed until the instrument panel speed is normally received.

[0022] Further, the central control screen determines that the vehicle speed display is abnormal as follows: when the central control screen cannot receive the vehicle speed signal displayed on the instrument but can receive the vehicle speed-related signal, it is determined that the vehicle speed display on the instrument is abnormal;

[0023] Among them, the central control screen cannot receive the correct vehicle speed signal from the instrument, including instrument communication failure and system failure.

[0024] When the central control screen determines that the interface display is abnormal, the central control screen forwards the displayed vehicle speed calculated by the MCU to the central control screen SOC, and the central control screen SOC sends it to the central control screen display via LVDS. In this way, when the instrument interface has communication failures, system failures, etc. and cannot display the instrument speed normally, the central control screen can display the speed information to ensure that the vehicle can run normally and ensure driving safety.

[0025] Embodiment 2 In order to further illustrate the actual effect of the abnormal vehicle speed recognition and emergency display of the instrument of the present invention, this embodiment discloses a method and application scenario of the abnormal vehicle speed recognition and emergency display of the instrument based on the first embodiment.

[0026] The instrument normally receives the vehicle speed related signals and converts and displays them. At the same time, the external display speed is sent to other demand controllers. The central control screen receives the vehicle speed related signals and the external display speed signals of the instrument for calculation and backup. When the central control screen determines that the speed display is abnormal, the central control screen displays the displayed speed through the same algorithm, such as Figure 2 , mainly covering the following steps: Step 1, the instrument displays the vehicle speed status: the instrument displays the vehicle speed normally, but the central control screen does not display it;

[0027] Step 2: Determine if the speed displayed on the instrument is abnormal: The central control screen receives the vehicle speed related signal and the speed displayed on the instrument panel, and determines whether the speed displayed on the instrument panel is received. If not, it is considered that the speed displayed on the instrument panel is abnormal.

[0028] Step 3: If the speed displayed on the instrument is abnormal, the central control screen will display the displayed speed until the speed displayed on the instrument is normal. If the speed displayed on the instrument is normal, the central control screen will not display the displayed speed. This ensures that the instrument or central control screen can always display the displayed speed information, ensuring the user's driving safety.

[0029] Embodiment 3 Based on the first and second embodiments, this embodiment discloses an instrument abnormal vehicle speed recognition and emergency display system for use in the method.

[0030] See also Figure 3 , an instrument abnormal vehicle speed recognition and emergency display system, including an instrument and a central control screen; The instrument includes an instrument MCU, an instrument SOC, an instrument LVDS, and an instrument display; The central control screen includes a central control screen MCU, a central control screen SOC, a central control screen LVDS, and a central control screen display; The instrument and the central control screen are independent of each other and communicate via the CAN bus; The instrument MCU is used to communicate with the central control screen MCU to calculate and display the vehicle speed; The central control screen MCU determines whether there is an abnormality in the vehicle speed displayed on the instrument panel. When the instrument panel is abnormal, the central control screen MCU forwards the calculated vehicle speed displayed on the instrument panel to the central control screen SOC, and the central control screen SOC sends it to the central control screen display via LVDS.

[0031] Preferably, the abnormal vehicle speed information of the instrument is transmitted to the MCU of the central control screen via the CAN data twisted pair cable.

[0032] With the above system, when the instrument interface fails to display the displayed vehicle speed due to a black screen, gray screen, communication failure, etc., the instrument or central control screen can indirectly determine the abnormality of the instrument through signal transmission and reception, without using other hardware diagnosis, which is simple and cost-saving. The instrument or central control screen always displays the displayed vehicle speed information to ensure that the vehicle can run normally and ensure driving safety.

[0033] Embodiment 4 This embodiment discloses a vehicle based on the third embodiment.

[0034] A vehicle is provided, wherein the vehicle is equipped with the instrument abnormal speed recognition and emergency display system.

[0035] The principles and implementation methods of the present invention are described in this article using specific examples. The description of the above embodiments is only used to help understand the core idea of ​​the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, the present invention can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A method for identifying and urgently displaying abnormal vehicle speed on an instrument, characterized in that: The process includes the following steps: the instrument normally receives vehicle speed related signals and converts and displays them, and at the same time displays the vehicle speed externally to other demand controllers; the central control screen receives vehicle speed related signals and the vehicle speed signal displayed externally on the instrument for calculation and backup; when the central control screen determines that the speed display is abnormal, the central control screen displays the vehicle speed through the same algorithm.

2. The abnormal vehicle speed identification and emergency display method of the instrument according to claim 1 is characterized in that: The central control screen determines that the vehicle speed display is abnormal as follows: when the central control screen cannot receive the vehicle speed display signal but can receive the vehicle speed related signal, it is determined that the instrument speed display is abnormal.

3. The abnormal vehicle speed identification and emergency display method of the instrument according to claim 1 is characterized in that: The central control screen cannot receive the correct vehicle speed signal from the instrument, including instrument communication failure and system failure.

4. The abnormal vehicle speed identification and emergency display method of the instrument according to claim 1 is characterized in that: When the central control screen determines that the interface display is abnormal, the central control screen forwards the displayed vehicle speed calculated by the MCU to the central control screen SOC, and the central control screen SOC sends it to the central control screen display via LVDS.

5. An instrument abnormal vehicle speed recognition and emergency display system, characterized in that: Including instrument panel and central control screen; The instrument includes an instrument MCU, an instrument SOC, an instrument LVDS, and an instrument display; The central control screen includes a central control screen MCU, a central control screen SOC, a central control screen LVDS, and a central control screen display; The instrument and the central control screen are independent of each other and communicate via the CAN bus; The instrument MCU is used to communicate with the central control screen MCU to calculate and display the vehicle speed; The central control screen MCU determines whether there is an abnormality in the vehicle speed displayed on the instrument panel. When the instrument panel is abnormal, the central control screen MCU forwards the calculated vehicle speed displayed on the instrument panel to the central control screen SOC, and the central control screen SOC sends it to the central control screen display via LVDS.

6. The abnormal vehicle speed identification and emergency display system of the instrument according to claim 5 is characterized in that: The abnormal vehicle speed information of the instrument is transmitted to the MCU of the central control screen through the CAN data twisted pair cable.

7. A vehicle, characterized in that: The vehicle is equipped with the instrument abnormal speed recognition and emergency display system as claimed in claim 6.

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