The invention discloses a non-lamp-control intersection safety early warning method and system based on vehicle speed control. The method comprises the steps: respectively detecting a visual re-recognition distance a of a main road vehicle per second, a visual re-recognition distance b of a secondary road vehicle per second, and a visual re-recognition distance c of a secondary road pedestrian persecond; and respectively calculating a minimum braking safety distance damin of the vehicle on the main road, a minimum braking safety distance dbmin of the vehicle on the secondary road, time ta when the vehicle on the main road passes through a corresponding conflict point, time tb when the vehicle on the secondary road passes through the corresponding conflict point and time tc when a pedestrian on the secondary road passes through the corresponding conflict point. According to the method, problems that in the prior art, a non-lamp-controlled intersection safety early warning system only achieves the safety early warning function of vehicles on a main road, and when the speeds of vehicles on the main road and vehicles on a secondary road are too high or the conflict point distance between the vehicles reaching the intersection and an intersection road is smaller than the minimum braking distance, the vehicles or pedestrians on the intersection road can not be avoided easily are solved.
本发明公开了一种基于车速控制的非灯控路口安全预警方法及系统,其中,所述方法包括:对主路车辆每秒的视觉再认距离a、次路车辆每秒的视觉再认距离b以及次路行人每秒的视觉再认距离c分别进行检测;分别计算出所述主路车辆的最小制动安全距离d、所述次路车辆的最小制动安全距离d、所述主路车辆通过对应冲突点的时间t、所述次路车辆通过对应冲突点的时间t以及次路行人通过对应冲突点的时间t;该方法克服现有技术中非灯控路口安全预警系统只实现了主路车辆的安全预警功能,当主路和次路车辆车速过快,或到达路口的车辆至相交道路的冲突点距离小于最小制动距离,已很难要求其避让相交道路的车辆或行人的问题。
Non-lamp-control intersection safety early warning method and system based on vehicle speed control
基于车速控制的非灯控路口安全预警方法及系统
2020-06-16
Patent
Elektronische Ressource
Chinesisch
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