具有GPS导航和无线通讯功能的车载汽车防碰撞装置

Vehicle-mounted Anti-collision Device with Function of GPS Navigation and Wireless Communication for Cars

应用GPS、无线通讯和嵌入式系统技术,设计了车载汽车防碰撞装置,且RF射频模块通过电磁屏蔽措施增强其抗干扰性。在两点曲线对于整个地球而言近似为直线的假设基础上,提出一种车辆方位判断算法,还提出一种基于GPS数据刷新控制的防止方向误报算法,解决车辆方向误报的问题。装置经试验证实,满足各项预期功能。

The technologies of GPS,wireless communication and embedded system were used to design a vehicle-mounted anticollision device for cars.The ECCM of RF module was enhanced by some measures of electromagnetic shielding.In order to get the position of cars,a position judgment algorithm was presented based on the theory that a curve between two points in the range of 50 m is similar to a line seen from the earth.And based on the control of the GPS data updating,an algorithm that let wrong position broadcasting disappear was also presented to resolve the problem of broadcasting wrong position.The functions of the device meets the expected requirements by tests.