Vehicle rear-end collision avoidance system, method and single-chip microcomputer

Abstract

The invention relates to a vehicle rear-end collision avoidance system, method and single-chip microcomputer. A main control unit (20) is connected with an environmental perception module (10) through a peripheral communication interface, is connected with an executing unit (30) of a self vehicle through a line, and is connected with a vehicle-mounted unit (40) of the self vehicle through a dedicated short range communication DSRC interface; the vehicle-mounted unit (40) of the self vehicle communicates with the vehicle-mounted unit (40) on the front vehicle through a DSRC technique of a vehicle-mounted Ad-hoc network; the vehicle-mounted unit (40) on the front vehicle controls a front vehicle brake light of the executing unit (30) in the front vehicle through an interrupt signal generated in an electronic hardware interface. Through a preset procedure by the single-chip microcomputer, according to the speed of the self vehicle, relative vehicle speed, and the distance between the self vehicle and the front vehicle, the main control unit (20) calculates a critical security vehicle distance, judges the dangerous degree of collision generated between the self vehicle and the front vehicle in the travelling process, and then triggers relevant action of the executing unit. According to the automobile rear-end collision avoidance system, method and single-chip microcomputer disclosed by the invention, the probability of vehicle rear-end collision can be greatly reduced.

Description

technical field [0001] The invention relates to the field of automobiles, in particular to an automobile rear-end collision prevention technology. Background technique [0002] With the rapid growth of global car ownership, cars have brought great convenience to people's travel, promoted the development of social economy and the progress of human material civilization, but the resulting road traffic accidents have caused great harm to people's lives, property and The national economy has caused huge losses. According to the World Health Organization: Every year, the number of people injured in traffic accidents in the world is about 20 million to 50 million, the number of people killed in road traffic accidents is about 1.3 million, and the economic losses caused by road traffic accidents are about 518 billion. dollars. Road traffic accidents are about to become the third largest direct cause of people's abnormal death besides mental stress disorder and cardiovascular dise...

AI Technical Summary

Problems solved by technology

[0003] At present, although foreign automobile anti-rear collision systems have achieved certain research results, due to cost and other issues, the system is only limited to some luxury cars.

However, the research on automobile anti-rear-collision control system started relatively late in China, the level of development is not high, the research institutions are relatively scattered, and the functions that can be realized are relatively single, only considering safety, and are still in the experimental stage.

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