Longitudinal active safety avoidance system and method for intelligent car

Abstract

The invention discloses a longitudinal active safety avoidance system and method for an intelligent car. The system is characterized in that an environment sensing module, a safe distance model algorithm module, a braking deceleration control algorithm module and a lower computer execution module are included; the environment sensing module comprises a vehicle speed sensor and a radar system module and is used for acquiring vehicle driving data, the safe distance model algorithm module is used for acquiring a safe distance between two cars, and the braking deceleration control algorithm module is used for calculating the braking deceleration of the own car and supplying the braking deceleration to the lower computer execution module for execution. According to the system and method, relative driving safety between the own car and the preceding car can be guaranteed, and the driving comfort requirement can be met.

Description

technical field [0001] The invention relates to the field of smart cars, in particular to a longitudinal active safety collision avoidance system and method applied to smart cars. Background technique [0002] In recent years, the development of artificial intelligence technology has also provided impetus for the development of smart cars; the development of radar technology has also promoted the progress of smart cars, enabling them to detect the driving information of vehicles in front; and the frequent occurrence of car rear-end collisions has promoted smart cars. The development of automotive safety systems; smart cars have become the development direction of future cars. [0003] The existing safety distance model algorithm only considers the driver's reaction distance, the distance to eliminate the relative speed and the distance that should be maintained after the two vehicles are stationary, so the safety distance calculated by the existing safety distance algorithm ...

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Problems solved by technology

[0003] The existing safety distance model algorithm only considers the driver's reaction distance, the distance to eliminate the relative speed and the distance that should be maintained after the two vehicles are stationary, so the safety distance calculated by the existing safety distance algorithm is relatively small, and the safety degree is relatively small Low

[0004] However, the existing braking deceleration algorithm only considers the influence of relative speed on it, and simply gives a specific value within a certain range. Therefore, the existing braking deceleration algorithm considers fewer factors and cannot be better. It reflects the driver's reaction to the actual environment perception, and simply given a specific value makes the change not smooth enough and prone to sudden changes

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