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Automobile digitalization instrument controlling and displaying method and device

A technology for controlling display and instruments, which is applied in the direction of measuring devices, electrical program control, sequence/logic controller program control, etc., can solve the problems that the driver cannot use the instrument, and the content of the display is small, so as to achieve accurate mileage display Reliable, accurate indication, powerful display

Active Publication Date: 2009-08-19
北京长城华冠汽车技术开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional car instrument is very simple, and the content displayed is relatively small. The driver can basically not take any intervention on the instrument. The driver can only get what the instrument shows, and there is no room for choice.

Method used

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  • Automobile digitalization instrument controlling and displaying method and device
  • Automobile digitalization instrument controlling and displaying method and device
  • Automobile digitalization instrument controlling and displaying method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] This embodiment is a method for controlling and displaying an automobile digital instrument, the process is as follows figure 1 shown. The instrument device used in the method includes: CAN bus, MCU microcontroller, pointer digital instrument driven by stepping motor, LED information indicator light, LCD digital display with selection button, LCD integrated display with operation bar . The process of the method is as figure 1 As shown, the operation steps are as follows:

[0026] In the step of starting, the instrument device is powered on for self-test, and whether it enters the state of low power consumption;

[0027] The steps of CAN bus communication management;

[0028] Steps for the MCU microcontroller to receive and process the information sent by the CAN bus;

[0029] In the steps of pointer instrument display, the MCU microcontroller transmits the four signals of water temperature, oil quantity, engine speed, and vehicle speed to the digital pointer instru...

Embodiment 2

[0040] This embodiment is an improvement of the first embodiment, and is a refinement of the detection of whether to enter the low power consumption state in the step of starting in the control and display method of the automobile digital instrument described in the first embodiment. In order to ensure the low power consumption performance of the automobile digital instrument, this embodiment designs a system sleep wake-up function. When the instrument is not working, the system enters the dormant state, shuts off the power supply of the corresponding external chip, and the MCU enters the STOP mode to reduce the power consumption of the entire instrument. When the instrument is about to work, if the external relevant switch is activated, the instrument will be awakened and resumed to the working state. The above process as image 3 As shown, the sub-steps include:

[0041] The sub-step of judging whether the ignition switch is turned from on to off, if "yes" then enters the ...

Embodiment 3

[0048] This embodiment is an improvement of the second embodiment, and is a refinement of the CAN bus communication management steps described in the control and display method of the automobile digital instrument described in the second embodiment. The CAN communication function is an important feature of this embodiment. In order to ensure the normal progress of CAN communication, this embodiment designs a relatively comprehensive network management strategy for CAN communication.

[0049] After the ignition switch changes from OFF to ON and then from ON to OFF, it can effectively manage the start of CAN communication and the synchronous shutdown of the node network.

[0050] Under normal communication conditions, the frame timeout is effectively monitored and processed. Monitor and judge Bus Off, and restore CAN communication in time after Bus Off occurs.

[0051] Under normal working conditions, the system voltage can be monitored, and the start, stop and diagnosis of CAN...

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Abstract

The invention relates to a control display method of an automobile digital instrument and a device, which are used for displaying various status signals of the automobile in running process. The aim of the invention is realized as follows: the device consists of a CAN bus, an MCU, a pointer digital instrument, an information indicating light, an LCD digital display screen and an LCD comprehensive display screen; the running steps include start; communication management of the CAN bus; receiving and processing information sent by the CAN bus by virtue of the MCU; the display of the pointer instrument, the display of a warning signal; mileage display; comprehensive display; and stop. The invention uses the pointer instrument of a stepping motor with accurate indication. By using the comprehensive display screen, the invention has powerful comprehensive information display function, complete menu operation function, multi-purpose function of one screen and clear voice and character warning function. The invention is also characterized by accurate and reliable mileage display, complete CAN communication network management and unique low power consumption design.

Description

technical field [0001] The invention relates to a control and display method and device for an automobile digital instrument, which is an electronic control and display method and device, and a display method and device for displaying various status signals of a car during operation. Background technique [0002] The various states of the car during operation are usually displayed on the instrument panel of the car, so that the driver can clearly understand the running state of the car and prevent accidents. The display of the running state of the car usually includes two aspects: one is the basic state display, and the other is the warning display. The traditional car instrument is very simple, and the content displayed is relatively small. The driver can basically not take any intervention on the instrument. The driver can only get what the instrument shows, and there is no room for choice. Contents of the invention [0003] The object of the present invention is to pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01D7/02G05B19/04G01C22/00
Inventor 解哲谢有浩
Owner 北京长城华冠汽车技术开发有限公司
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