Control method and device for automatic emergency braking of vehicle, and vehicle

Abstract

The invention discloses a control method and device for automatic emergency braking of a vehicle, and the vehicle. The method comprises the steps of obtaining the distance between the vehicle and a barrier in front of the vehicle as well as the relative speed of the vehicle and the barrier in front of the vehicle, working out the time before a collision occurs according to the distance and the relative speed, judging the current emergency state of the vehicle according to the time before the collision occurs and time threshold values corresponding to different emergency states, and before the vehicle enters the current emergency state, controlling a braking device of the vehicle to carry out corresponding braking operation according to the braking strategy corresponding to the current emergency state, specifically, the time threshold values corresponding to the different emergency states include the different time threshold values determined according to the current speed of the vehicle. By means of the technical scheme, the implementation method of an advanced emergency braking system (AEBS) is optimized, and the driving and taking experience of the vehicle is improved while vehicle safety is fully guaranteed.

Description

technical field [0001] The invention relates to vehicle braking technology, in particular to a control method for automatic emergency braking of vehicles, a control device for automatic emergency braking of vehicles and a vehicle provided with the control device for automatic emergency braking of vehicles. Background technique [0002] AEBS (Advanced Emergency Braking System, Advanced Emergency Braking System) has been recognized in automobiles because it can automatically perform emergency braking operations in emergency situations (such as when there is a risk of collision) to avoid collisions or reduce the damage caused by collisions. more widely used. [0003] In practical applications, the AEBS implementation solutions provided by different AEBS suppliers are not exactly the same; Damage, when some AEBS is triggered, it will control its deceleration to gradually increase until the vehicle stops; for another example, some AEBS will determine the current speed based on t...

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Problems solved by technology

[0004] In the process of realizing the present invention, the inventor found that: for the implementation of the above-mentioned AEBS whose deceleration varies from small to large, the probability of collision with the obstacle in front is relatively high, such as the situation where an obstacle suddenly inserts into the front of the vehicle in front of the side of the vehicle In this situation, the vehicle has a higher chance of colliding due to insufficient braking force; for the above-mentioned AEBS implementation scheme in which the braking force gradually decreases from a larger value, since this implementation scheme does not take into account the obstacles ahead when calculating the braking distance Therefore, there may be a phenomenon that the braking operation is performed when there is no need for braking. In addition, the gradual reduction of the braking force from a large value will easily make the occupants feel uncomfortable.

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