CN108583476B

CN108583476B - CAN bus communication combined system

Info

Publication number: CN108583476B
Application number: CN201810495985.8A
Authority: CN
Inventors: 陈兴贵; 刘代旭; 陈香平
Original assignee: Sinotruk Chengdu Wangpai Commercial Vehicle Co Ltd
Current assignee: Sinotruk Chengdu Wangpai Commercial Vehicle Co Ltd
Priority date: 2018-05-22
Filing date: 2018-05-22
Publication date: 2021-10-29
Anticipated expiration: 2038-05-22
Also published as: CN108583476A

Abstract

The invention discloses a CAN bus communication combined system, and relates to the automobile electrical appliance manufacturing industry. The system comprises a BCM module, a CAN transceiver module, an instrument control unit, a liquid crystal display unit, an indicator lamp triggering module, an ECU module, an ABS module, an EPB module, an EBS module and an ATM module; the BCM module is a whole vehicle control module, all switch control signals of a whole vehicle are input into the BCM module, and the BCM module transmits the switch control signals to the instrument control unit, the ECU module, the ABS module, the EPB module, the EBS module and the ATM module through the CAN transceiving module; the instrument control unit is logically judged by chip setting, triggers each indicator lamp to work through the indicator lamp triggering module, and displays through the liquid crystal display unit. The invention realizes the transmission of the switching signal of the whole vehicle through the CAN, facilitates the signal transmission among controllers and the line arrangement of the whole vehicle, ensures the reliability of the signal and reduces the electric appliance faults.

Description

CAN bus communication combined system

Technical Field

The embodiment of the invention relates to the automobile electrical appliance manufacturing industry, in particular to the CAN communication signal and indicator lamp triggering control of a vehicle combination instrument, in particular to a CAN bus communication combination system.

Background

At present, with the increasingly perfect electric control functions of trucks, the requirements of controllers on switch signals are increased, required indicator lamps are continuously updated, and the original traditional physical instrument is difficult to meet the requirements.

Disclosure of Invention

The invention aims to provide a CAN bus communication combination system aiming at the defects in the background technology, so that the signals between controllers are transmitted through a CAN and the whole vehicle line is arranged, the reliability of the signals is ensured, and the electric appliance faults are reduced.

In order to achieve the technical effects, the invention adopts the following technical scheme:

a CAN bus communication combination system comprises a BCM module, a CAN transceiver module, an instrument control unit, a liquid crystal display unit, an indicator lamp triggering module, an ECU module, an ABS module, an EPB module, an EBS module and an ATM module; the BCM module is a whole vehicle control module, all switch control signals of a whole vehicle are input into the BCM module, and the BCM module transmits the switch control signals to the instrument control unit, the ECU module, the ABS module, the EPB module, the EBS module and the ATM module through the CAN transceiving module; the ECU module, the ABS module, the EPB module, the EBS module and the ATM module receive signals to work, the instrument control unit is judged by chip setting logic, each indicator lamp is triggered to work through the indicator lamp triggering module, and display is carried out through the liquid crystal display unit.

The further technical scheme is as follows: the CAN bus communication combination system further comprises an alarm buzzer, wherein the alarm buzzer is electrically connected with the instrument control unit and used for giving an alarm prompt when the instrument breaks down.

The further technical scheme is as follows: the CAN bus communication combination system further comprises a zero returning unit module, wherein the zero returning unit module is electrically connected with the liquid crystal display unit and is used for carrying out zero returning setting on the display content of the liquid crystal display unit.

According to the invention, a switch signal of the whole vehicle is transmitted to the instrument control unit through the CAN wire, the instrument control unit triggers the control indicator lamp, and the instrument and other controllers of the whole vehicle realize CAN communication. The CAN bus communication protocol of the instrument is executed according to J1939, CAN realize the communication with other controllers such as ECU, BCM and AMT, and controls and triggers the display of various meter quantities of the instrument and lights the indicator lamp through the internal chip of the instrument.

Compared with the prior art, the invention has the following beneficial effects: the Controller Area Network (CAN) is widely applied to modern automobile control, and the instrument realizes that the switch signal of the whole automobile is transmitted through the CAN on the basis of the technology, and the controller triggers the signal lamp to light, thereby facilitating the signal transmission among the controllers and the whole automobile line arrangement, ensuring the reliability of the signal and reducing the electric appliance faults.

Drawings

Fig. 1 shows a schematic structural diagram according to an embodiment of the invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Examples

As shown in fig. 1, a CAN bus communication combination system includes a BCM module, a CAN transceiver module, a meter control unit, a liquid crystal display unit, an indicator light trigger module, an ECU module, an ABS module, an EPB module, an EBS module, and an ATM module; the BCM module is a whole vehicle control module, all switch control signals of a whole vehicle are input into the BCM module, and the BCM module transmits the switch control signals to the instrument control unit, the ECU module, the ABS module, the EPB module, the EBS module and the ATM module through the CAN transceiving module; the ECU module, the ABS module, the EPB module, the EBS module and the ATM module receive signals to work, the instrument control unit is judged by chip setting logic, each indicator lamp is triggered to work through the indicator lamp triggering module, and display is carried out through the liquid crystal display unit. The liquid crystal display unit comprises a liquid crystal display screen and is mainly used for displaying parameters such as vehicle speed, air pressure, urea liquid level, ambient temperature, time, gears, small-scale accumulated mileage and the like.

In the embodiment, the alarm device further comprises an alarm buzzer, wherein the alarm buzzer is electrically connected with the instrument control unit and used for giving an alarm prompt when the instrument breaks down. The liquid crystal display device further comprises a zero returning unit module, wherein the zero returning unit module is electrically connected with the liquid crystal display unit and is used for carrying out zero returning setting on the display content of the liquid crystal display unit.

The BCM module is a body control module, and is mainly used for controlling electric appliances of the automobile body, such as an integral lamp, a wiper, washing, a door lock, an electric window, a skylight, an electric rearview mirror, remote control and the like, through communication with other modules. The BCM module transmits the switch signals to the instrument control unit and the required controller through the CAN transceiving module, the instrument control unit sets logic judgment by a chip to trigger various displays, and transmits the required signals to other controllers to realize various automatic electric control functions of the whole vehicle.

The ECU module, an Electronic Control Unit engine Control Unit, is a solid chip, also called "traveling computer", "vehicle-mounted computer", etc., and is used in automobiles. And the system is responsible for analyzing and processing the data collected by each sensor.

An ABS module (Anti-lock Braking System) is used for sending a signal that a wheel is locked through a sensor arranged on the wheel, a controller instructs a regulator to reduce the oil pressure of a wheel brake cylinder, the Braking torque is reduced, the original oil pressure is recovered after a certain time, the operation is continuously circulated in such a way (5-10 times per second), and the wheel is always in a rotating state and has the maximum Braking torque.

The EPB module is an abbreviation of Electrical Park Brake, electronic parking Brake system.

The EBS module and the automobile electronic control brake system replace the traditional mechanical transmission to control the brake system by electronic control on the basis of ABS so as to achieve good brake effect and increase the brake safety of the automobile.

The AMT module, also called an automatic gearbox, can determine the optimal gear according to parameters such as vehicle speed, an accelerator, driver commands and the like, controls the operation processes such as clutch separation and connection, gear picking and gear engaging of a gear shifting handle and synchronous adjustment of the accelerator opening of an engine which are originally manually completed by a driver, and finally realizes the control automation of the gear shifting process.

The modules (e.g., BCM module, ECU module, ABS module, EPB module, EBS module, and ATM module) related to the technical solution of the present invention are all known to those skilled in the art, and therefore detailed description thereof is omitted.

Although the invention has been described herein with reference to illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this disclosure. More specifically, various variations and modifications may be made to the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure herein. In addition to variations and modifications in the component parts and/or arrangements, other uses will also be apparent to those skilled in the art.

Claims

1. A CAN bus communication combination system is characterized in that: the system comprises a BCM module, a CAN transceiver module, an instrument control unit, a liquid crystal display unit, an indicator lamp triggering module, an ECU module, an ABS module, an EPB module, an EBS module and an AMT module; the BCM module is a whole vehicle control module, all switch control signals of a whole vehicle are input into the BCM module, and the BCM module transmits the switch control signals to the instrument control unit, the ECU module, the ABS module, the EPB module, the EBS module and the AMT module through the CAN transceiver module; the ECU module, the ABS module, the EPB module, the EBS module and the AMT module receive signals to work, the instrument control unit is set by a chip for logical judgment, the indicator lamps are triggered to work through the indicator lamp triggering module, and parameters of vehicle speed, air pressure, urea liquid level, ambient temperature, time, gear and subtotal accumulated mileage are displayed through the liquid crystal display unit;

the alarm buzzer is electrically connected with the instrument control unit and used for sending an alarm prompt when the instrument fails; and the zero returning unit module is electrically connected with the liquid crystal display unit and is used for carrying out zero returning setting on the display content of the liquid crystal display unit.