Control display method and control system of automobile digital combination instrument
A technology for controlling display and combination instrument, which is applied to vehicle components, circuits or fluid pipelines, transportation and packaging, etc. It can solve the problem that the vehicle speed signal cannot be obtained, the degree of intelligence of the combination instrument is low, and the vehicle controller and bus control cannot be shared. Unit operation work and other issues to achieve intelligent and effective display and transmission
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Problems solved by technology
This control strategy relying on the vehicle speed sensor is relatively fragile. Once the vehicle speed sensor or the wheel speed sensor fails, the vehicle speed signal will not be obtained, which will inevitably bring many potential risks; Cannot share the calculation work of the vehicle controller and the bus control unit
Method used
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[0051] figure 1 It is a schematic flow chart of the control display method in the present invention, figure 2 It is a block flow diagram of the control system in the present invention, as shown in the figure: the control and display method of the automobile digital combination instrument of the present embodiment of the present invention includes the following steps:
[0052] S1. Obtain the speed signal and gear position signal of the drive motor of the electric vehicle through the CAN bus;
[0053] S2. Analyze and calculate the obtained motor speed signal and gear position signal through the instrument control unit to obtain at least vehicle speed information; wherein, the instrument control unit performs internal processing and calculation after obtaining the motor speed signal and gear position signal transmitted from the bus, After calculation, the driving state parameters such as vehicle speed, mileage and rotational speed can be obtained;
[0054] S3. Displaying the v...
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The invention discloses a control display method and a control system for an automobile digital combination instrument, which includes the following steps: S1. Obtain a motor speed signal and a gear signal through a CAN bus; S2. Use an instrument control unit to control the obtained motor speed signal. Perform analysis and calculation with the gear signal to at least obtain the vehicle speed information; S3. Display the analyzed vehicle speed information through the display unit; S4. Send the analyzed vehicle speed information to the CAN bus for each control node of the CAN bus to extract; through The instrument control unit calculates and processes the motor speed signal and gear signal transmitted by the bus to obtain vehicle speed information. The vehicle speed sensor can be discarded or used together with the vehicle speed sensor to avoid potential risks caused by vehicle speed sensor failure; and the control unit of the combined instrument not only It can be used as a processing unit and as a sending node for sending vehicle speed information to the outside. It changes the structure of vehicle speed in the vehicle network and makes the control, display and transmission of vehicle speed information more intelligent and effective.
Description
technical field [0001] The invention relates to the technical field of automobile instruments, in particular to a method for controlling and displaying an automobile digital combination instrument and a control system thereof. Background technique [0002] The automobile instrument device is the information display center of the working state of the automobile, a platform for the driver to exchange information with the automobile, and one of the core components to ensure the driving safety of the automobile. In the car instrument, the speedometer is used to indicate the driving speed of the vehicle and is a necessary equipment for the vehicle. As an instrument developer, the designed speedometer must ensure smooth operation, timely and accurate indication, and the odometer must be accurate and reliable. With the increasing development of automobile technology, various electronic sensors and electronic control modules have been widely used in vehicles, and the form of vehicl...
Claims
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IPC IPC(8): B60K35/00B60R16/023
CPCB60K35/00B60R16/0232B60K35/29B60K2360/18
Inventor 张兴海郑登磊彭自力南富乾戴锋刘忠义