Cut-in vehicle monitoring method and system

Abstract

The invention discloses a cut-in vehicle monitoring method and system. The cut-in vehicle monitoring method comprises the steps of obtaining a curvature radius of a fixed-curvature running path of a vehicle on the basis of motion information of the vehicle; converting motion information of a cut-in vehicle to be under a coordinate system of the fixed-curvature running path of the vehicle through the curvature radius so as to obtain relative motion information, relative to the fixed-curvature running path, of the cut-in vehicle; when it is determined that the cut-in vehicle is in a preset cut-in vehicle position pre-warning area on the basis of the relative motion information and the cut-in vehicle is a transverse cut-in target vehicle threatening to the vehicle, controlling a longitudinalvelocity of the vehicle so as to realize an antedating response to the cut-in vehicle. Therefore, the collision risk between vehicles is greatly reduced, the running safety is enhanced, the performance of an automatic emergency braking system and the performance of a self-adaptive cruise system are improved, and meanwhile, the cut-in vehicle monitoring method and system are suitable for situationsthat the vehicle is on straightway and curve trajectories.

Description

technical field [0001] The invention relates to the technical field of automobile automatic driving, and more specifically, relates to a method and system for monitoring cut-in vehicles. Background technique [0002] Adaptive Cruise Control (ACC) system is a new generation of assisted driving system developed on the basis of traditional cruise control. It not only has all the functions of automatic cruise, but also can monitor the road ahead of the car through sensors such as on-board radar. traffic environment. Once it is found that there are other vehicles in front of the current driving lane, including when cutting into the vehicle, it will control the longitudinal speed of the vehicle by controlling the accelerator and brake of the vehicle according to the relative distance and relative speed between the vehicle and the vehicle in front. Keep an appropriate safe distance between your vehicle and the vehicle in front. [0003] However, the existing adaptive cruise contr...

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Problems solved by technology

[0003] However, the existing adaptive cruise control system has certain limitations when other vehicles cut into the front of the vehicle's driving path, which is mainly manifested as: only when the cutting vehicle enters the driving path of the own vehicle, Respond to the cutting vehicle, so there is a delay on the time scale, which may easily cause other vehicles to cut in front of the vehicle's driving path, and the vehicle will suddenly decelerate, thereby causing interference to the surrounding normal driving vehicles, resulting in an increase in the risk of collision and driving safety. The performance of the automatic emergency braking system and the adaptive cruise system is reduced; and, when the vehicle is on a curved track, there are still situations where the judgment of the cutting-in vehicle is inaccurate

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