摘要
为了防止高速公路追尾事故的发生,降低人身、财产损失,现主要依靠现代通信机制获得实时距离信息。具体方法是采用定位芯片CXD2951GA-2从卫星获得汽车运行位置与速度信息,再通过UART口传输到AT89S8252单片机系统,系统通过无线收发器Nrf905接收邻近车辆的速度信息,利用安全测距模型进行比较计算出安全距离,与两车实时距离进行比较以控制报警装置报警来防止事故的发生。经测试表明该无线互通信系统实时性强、性价比高,在交通运输、电子通信、信息处理领域有着广泛的应用价值。
This design relies on modern communication mechanism for access of real-time information,thus to avoid automobile rear-end collision on the highway.CXD2951GA-2 receives the information of car running position and speed from the satellite,then transfers this information,through the UART port to AT89S8252,AT89S8252 sends information to the nearby vehicles by the wireless transceiver nRF905.When the nearby vehicles receives the information,nRF905 would send the safe distance to AT89S8252,and with the computing model,the safe distance and the actual distance between the car and adjacent car is compared,thus to control the real-time distance display of warning device and to prevent rear-end collision.The test results show that the wireless inter communication system is of strong real-time performance,high cost-effectiveness,and extensive application value in transport,electronic communication and information processing.
出处
《通信技术》
2011年第9期92-94,共3页
Communications Technology
基金
高速路段智能防追尾无线通信系统的研究(No.ZK0937)
