An integrated system and method for longitudinal collision avoidance reminder and automatic follow-up

Abstract

The present invention provides a longitudinal collision avoidance reminding and automatic following integration system and a method, and belongs to the vehicle collision avoidance field. The system comprises a collision avoidance mode selection unit, a sensing unit, a central control ECU unit, a reminding unit and an execution unit. The sensing unit obtains the type and number of front barriers, the position of a target vehicle in a lane line, the relative speed and the relative distance of an own vehicle and the front barriers, sends the obtained information to the central control ECU unit, carries out the comprehensive determination of a safe state by a D-S evidence theory, and finally determines the number of the front barriers, the relative distance vrel, the relative speed srel and an acceleration a of the own vehicle and the front target vehicle, thereby reducing the false alarm situations of a vehicle-mounted radar and a vehicle-mounted camera furthest. The central control ECU unit generates an instruction, and the reminding unit and the execution unit execute the correlated actions. The system and method of the present invention enable the false alarm rate to be reduced and the response speed and the comfort level of the drivers to be improved simultaneously, at the same time, satisfy the collision avoidance demands on different road conditions.

Description

technical field [0001] The invention relates to the field of vehicle collision avoidance, in particular to a longitudinal collision avoidance reminder and automatic following integration system and method. Background technique [0002] Traffic safety has become a worldwide problem. According to reports, the number of deaths due to traffic accidents in the world is about 500,000 every year, so the impact of automobile safety on human life and property is self-evident. With the development of highways and the improvement of automobile performance, the speed of automobiles has also increased accordingly. In addition to the increase in the number of automobiles and the increasingly busy traffic, the casualties and property losses caused by the increase in automobile accidents have become a social problem that cannot be ignored. The driving safety of automobiles is even more important. [0003] Based on the above situation, automobile anti-collision has become a hot research po...

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Problems solved by technology

[0006] At the same time, the safety distance judgment of the current active collision avoidance technology is complicated, the system response speed is slow and other problems have caused unnecessary troubles to users, and there is no integrated collision avoidance system and method designed for different road conditions, such as in urban areas. Different collision avoidance modes are required when driving on roads with more complex road conditions and on highways, so that the collision avoidance effect is better and the driver is more comfortable. For this reason, it is necessary to invent a longitudinal collision avoidance reminder and automatic follow-up integrated system and method to reduce Improve the response speed and improve the comfort of the driver while reducing the false alarm rate

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