为了实现长距离大数据量信号的无线传输,根据ZigBee无线模块的透传性能和通讯系统的数据传输要求,设计并测试上位机与下位机之间不同的应用层通讯协议以及不同天线安装角度的影响。测试结果表明:有标识符数据包协议较无标识符数据包协议的通讯性能更稳定;在近地情况下,终端节点及协调器天线均竖直向上的无线通讯性能最佳,所测试的无线通讯模块可实现350 m通讯距离内数据接收率达90%以上。
In order to realize the wireless transmission of long‐distance and large‐data‐quantity signal , this paper conducted the design and performance tests of different application‐layer communication protocols between superodinate and subordinate computers and of different antenna orientations for the coordinator and terminal node . The tests verified that the communication protocol using with‐identifier‐data packet had more stable performance than that using without‐identifier‐data packet ,and that the vertical antenna direction for both terminal node and coordinator showed best communication performance for the near‐ground communication . The studied wireless communication module realized 90% or above data‐receiving‐rate within 350 m communication distance .