【摘要】 分析了ZigBee技术用于高速公路车辆间通信系统时,针对高速公路的空旷环境、车辆的快速移动性等特点所产生的主要影响因素:传输距离、终端移动速度(车速)、多节点组网、对向车辆信号干扰等.对这些因素进行数学建模,分析其对车辆间通信系统产生的影响,基于CC2430芯片完成了ZigBee点对点通信.在固定发射频率和改变发射频率两种情况下进行了传输距离的测试实验,验证了接收功率与发射功率和传输距离的关系.更多还原

【Abstract】 The main factors of the ZigBee technology are analyzed aiming at the characteristics of highway vehicle communication system,such as the open highway environment and the fast-moving vehicles.These factors are the transmission distance,the mobile terminal velocity(speed),multi-node network,signal interference of opposite vehicles,etc.Mathematical modeling of these factors is conducted to analyze their effects on inter-vehicle communication system.Finally,the paper realizes a point-to-point communications of ZigBee based on CC2430 chip.And it carries out the experiments of transmission distances in the case of fixed and changing the Radio frequency to verify the relationship of received power with transmitting power and transmitting distance.更多还原