A smart car emergency collision avoidance control method

Abstract

The invention discloses a collision avoidance control method of an intelligent vehicle in an emergency. The emergency collision avoidance control method of the intelligent vehicle includes the steps:respectively comparing emergency braking safe distance db, safe distance ds needed in steering collision avoidance and safe distance d1 needed in synchronous braking and steering of the intelligent vehicle with distance sf between the intelligent vehicle and a front vehicle; and according to a comparative result and vehicle running status on an adjacent lane, adopting the optimum collision avoidance mode among four modes of first level braking, emergency braking, the steering collision avoidance and braking-steering coordination collision avoidance. The emergency collision avoidance control method of the intelligent vehicle can realize that the intelligent vehicle can avoid the front vehicle or a barrier in the emergency so as to prevent an accident from occurring, and greatly improves safety of a driver and passengers.

Description

technical field [0001] The invention belongs to the field of automobile active safety, in particular to a collision avoidance control method for intelligent automobiles in emergency situations. Background technique [0002] With the advent of the era of artificial intelligence, smart cars have become the focus of today's research. The biggest problem of smart cars on the road is safety, and the active safety technology of cars is bound to attract more and more people's attention. Most traffic accidents are caused by mutual collisions between vehicles, and these collisions include frontal forward collisions, rear-end collisions, etc., in addition to a certain proportion of collisions with a certain angle. [0003] The active collision avoidance control system can control the vehicle to perform three modes of braking collision avoidance, steering collision avoidance, and braking while steering collision avoidance to ensure safety. However, in an emergency, if the ego vehicle...

AI Technical Summary

Problems solved by technology

The existing technology does not take into account that the safety distance required for braking and steering in emergency situations will vary due to the speed of the vehicle. Emergency braking is always given priority, but this is not the best choice in all scenarios

At the same time, if the self-vehicle needs to change lanes to avoid collisions, the safety of vehicles in adjacent lanes also needs to be considered. The existing technology either does not consider the impact of vehicles in adjacent lanes, or does not consider braking and steering when considering vehicles in adjacent lanes. The Influence of the Required Safety Distance on the Choice of Collision Avoidance

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