基于ZigBee通信的安全行车速度协调系统设计

Design of Safe Driving and Speed Coordination System Based on ZigBee

针对在低能见度条件下高速公路安全行车问题,提出基于ZigBee的高速公路速度协调系统。该系统选取三星ABM9S3 C2440作为核心处理器,通过型号为GS-92m的GPS模块采集车辆的地理位置信息,利用ZigBee CC2420建立车辆间通信网络,最后由QT界面显示出周围车辆的分布情况,驾驶员根据分布情况调整车速,最终实现队列内车辆的速度达成协调。通过对系统的实时性及ZigBee网络性能的分析,该系统可以满足车辆间的无线通信要求,有效提高高速公路行车的安全指数以及通畅指数。

In order to resolve the safety driving problem on the expressway in the condition of low visibility,a speed coordination system based on ZigBee is proposed.In this system,Samsung ARM9S3 C2440 is chosen as core processor,GS-92m is used to collect the geographical location information,ZigBee CC2420 is used to build the communication net among the vehicles,the distribution around vehicles is shown through QT interface.As a result,the drivers can adjust speed according to the distribution and the speed of vehicles＇ in the queue is coordinatied at last.The system can satisfy the requirement of the wireless communication among the vehicles and improve the expressway traffic safety index and unobstructed index through the analysis on the performance of the real-time and ZigBee net.