Intersection collision prevention and warning apparatus and method

Abstract

The invention provides an intersection collision prevention and warning apparatus, comprising a vehicular unit and a roadside unit. The vehicular unit is mounted on a vehicle; the roadside unit is mounted on the roadside of an intersection. The vehicular unit includes a vehicular V2X communication device, a navigation positioning device and a vehicle controller. The roadside unit comprises a roadV2X communication device and a target capture device. When a vehicle enters an intersection region, positional information and moving trajectory of the vehicle are sent out, positional information andmoving trajectories of other vehicles and moving targets are received, a predicted track is calculated according to the positional information and moving trajectories of the vehicles and the moving targets, whether this vehicle has a track crossing region with other vehicles or moving targets is judged according to the predicted track, if yes, collision time TTC and track crossing region occupation time difference PET are calculated based on the track crossing region according to the positional information and moving trajectories of this vehicle and other vehicles or moving targets, and collision warning is calculated according to TTC and PET.

Description

technical field [0001] The present invention relates to the technical field of automobiles, more specifically, to the safety technology of automobiles. Background technique [0002] With the continuous increase of car ownership and the increasingly complex urban road traffic conditions, the intersection area has become a high-incidence area of ​​traffic accidents. According to statistics, 90% of major traffic accidents occur at intersections. [0003] In order to improve driving safety, more and more cars are equipped with active safety technology. Active safety technology generally uses the on-board camera or millimeter-wave radar to detect the surrounding objects of the vehicle. When the surrounding objects are too close to the vehicle or are on the driving route of the vehicle, a prompt or alarm will be given. In case of danger, the vehicle controller will also take active deceleration, braking and other measures to reduce or avoid the risk of collision. Most active sa...

AI Technical Summary

Problems solved by technology

At the intersection, the amount of calculation required for prediction is very large, but the reaction time provided is very small, and the prediction of path and speed is difficult, which makes the performance of TTC-based active safety technology poor

In addition, in the urban intersection scene, there are still a large number of pedestrians and non-motorized vehicles. The existence of pedestrians and non-motorized vehicles makes the calculation of active safety measures larger, further exacerbating the difficulty of processing

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