Early warning system and detection method for safety performance of large bus based on controller area network (CAN) bus

Abstract

The invention provides an early warning system and a detection method for the safety performance of a large bus based on a controller area network (CAN) bus. On the premise of not influencing safety and operation, the system is used as a node to be mounted into a CAN bus network system of a finished vehicle and is used for extracting operation performance information and fault information in electric units of all electronic control devices of an original vehicle, acquiring the posture information of the vehicle by arranging a gyroscope and monitoring and early warning the sideslip and the side tipping of the vehicle by a time to rollover (TTR) algorithm; a CAN network is formed by a CAN interface, an environment monitoring module and a display screen module, so that the operating environment of the vehicle is monitored and early warned, and a display screen node is used for receiving all alarming information for displaying; a wheel speed signal can be directly acquired by an antilock bake system (ABS) wheel speed sensor and can also be acquired by a CAN bus; when a dangerous state occurs, a display screen displays dangerous index names; simultaneously, the fault information is transmitted in a voice newspaper reading mode, and other pieces of information are transmitted in a buzz alarming mode and are ranked by priority according to time.

Description

technical field [0001] The invention relates to vehicle safety monitoring and early warning technology, in particular to a vehicle safety early warning system and detection method based on CAN bus network technology. Background technique [0002] With the rapid development of road traffic and the growth of car ownership, road traffic accidents have increased sharply, and the traffic safety situation has become increasingly severe. Statistics from the United Nations show that more than 1.2 million people die in traffic accidents worldwide every year, and millions of people are injured. . And the death toll of traffic accidents in my country ranks first in the world for more than 10 consecutive years, especially the serious and serious traffic accidents of mass death and mass injury occur frequently. Statistics on vehicle traffic accidents show that, in 2009, serious traffic accidents caused by operating passenger vehicles that resulted in the death of more than 10 people acc...

AI Technical Summary

Problems solved by technology

However, for large passenger vehicles that are likely to cause major traffic accidents in my country, the development of operation safety monitoring technology has just started, especially the comprehensive risk identification and integrated early warning technology in terms of performance, attitude and environment are less researched, and related technical products are more lacking

Images