Vehicle safety anti-collision control method combining safety distance and collision time

Abstract

The invention discloses a vehicle safety anti-collision control method combining safety distance and collision time, comprising the following steps of establishing a vehicle safety distance model; establishing a vehicle safety collision time model; and performing vehicle safety anti-collision decision. According to the method of the invention, an early warning distance is divided into three critical distances, namely a critical safety distance, a critical danger distance and a critical infinitesimal distance. Different safety prevention measures are provided for different distance phases, including safe driving tips, warnings, primary braking, secondary braking and emergency braking. Not only can ride comfort reduction caused by early braking be prevented, but also vehicle collision causedby delayed braking can be avoided. The method of the invention combines a safety distance model and a collision time model, which complement each other's deficiencies. The safety collision time modelcan compensate for the recognition error of a vehicle-mounted sensor on the safety distance; the safety distance model can make up for the infinite problem of TTC calculated by the safety collision time model.

Description

technical field [0001] The invention relates to the field of automatic driving technology control, in particular to a vehicle safety collision avoidance control method combining safety distance and collision time. Background technique [0002] With the increase in car ownership, the rapid development of science and technology, and the rise of intelligent autonomous driving technology, more and more potential safety hazards have emerged, and safe driving has become a current problem that needs to be faced. The complexity of the traffic situation and the driver's inaccurate judgment on the safety distance will cause serious traffic hazards. According to statistics, nearly 70% of traffic accidents are caused by the driver's misjudgment of the safe braking distance and the safe collision time. [0003] The safety collision avoidance system in the vehicle's automatic driving technology will monitor the surrounding environment in real time through a series of sensors such as on-b...

AI Technical Summary

Problems solved by technology

The safe collision time model mainly uses the calculation of the collision time to judge whether to take anti-collision measures, but there is a situation where the collision time is infinite, which will cause judgment errors

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