【摘要】 针对高速公路和非高速公路车辆之间交通事故频发的状况,设计了一种基于GPS和无线通信的车载汽车防碰撞装置,该装置即具备GPS导航功能,又具有语音播报车辆相互之间的距离和方位的功能,文中介绍了该装置的整体电路结构和基本原理,重点研究了应用本车采集GPS经纬度弧度(σ1,φ1)的位置信息和接收其它车辆经纬度弧度(σ2,φ2)的位置信息,计算车辆之间的地球球心夹角,应用弧长计算公式计算两车之间距离,分析研究推导出两车相对方位的计算公式,也给出了确定处于静止状态车辆的判断方法;所研制的装置在公路上进行了车载行驶测试;在400米范围之内显示其它车辆的方位、行驶的方向、距离、语音和报警信息准确,测试结果达到了预期设计要求。更多还原

【Abstract】 Nowadays the traffic accidents increasing in the highway,the paper design based on GPS and wireless communication vehicle automotive anti-collision device.The device has GPS navigation function and a voice broadcast function which can tells distance and direction of other cars around it.The paper describes the structure of the whole circuit of the device and the basic principles,focuses on the application of GPS latitude and longitude(σ1,φ1) vehicle location information and other information received from other vehicle’ s latitude and longitude(σ2,φ2)in radians to calculate the angle between vehicles.Then the distance of the two vehicles can be calculated by the Arc length formula.Author also derived formula for calculating the relative position and gave the method to determine the vehicle position at rest.The device developed by a vehicle on the road driving test.In the 400m range,test result achieved design requirements which could show other cars’ position,moving direction and warn driver.更多还原