半挂车转弯盲区实时监测预警与安全保障

Real-time monitoring,warning and safety guarantee for blind zones during semi-trailer turning

针对半挂车转弯内轮差和视觉盲区引发的交通安全问题,基于汽车转弯原理,构造动态直角坐标系下半挂车转弯轨迹方程,结合现有雷达检测技术,建立转弯盲区障碍物危险判别轨迹模型,并据此提出一个包括车侧相控探测雷达、可调后视镜、声光报警、夜间补光等硬件设施和以单片机为核心的软件程序构成的实时监测预警与安全保障一体化系统。结果表明:系统能够实时为半挂车驾驶员和车外交通参与者提供精确的车辆转弯状态与安全预警信息,避免转弯盲区内发生危险,实现转弯预警与安全保障的功能。

In order to solve traffic safety problems caused by inner wheel difference and visual blindness during semi-trailer turning,a trajectory equation under dynamic rectangular coordinate system was constructed based on vehicle turning theory.Then,a hazard identification model for obstacles in blind zones was developed considering existing radar detection technology.Building on this,a real-time monitoring,warning and safety guarantee system was proposed,composed by hardware facilities including vehicle-side phase-controlled radar,adjustable rearview mirror,audible and visual alarm,nighttime fill light,and software program with single-chip microcomputer as a key.The results show that the system can provide accurate real-time turning status and safety early warning information for semi-trailer drivers and off-vehicle traffic participants,avoiding risks in blind zones and therefore fulfilling its function of early warning and safety guarantee.