基于ZigBee的无线仪表通信系统的研究

Study of wireless instrument communication system based on ZigBee

基于TI的Z-STACK协议栈,研究了仪表无线通信系统,设计的软件在许多功能上突破了ZigBee的常规应用。而车间等一些工业现场中,每个终端节点连接一个设备或者仪表,节点必须不能失效,通过协调器网络维护,提高了网络稳定性。通过网络参数配置,实现了节点加入指定网络以及在不同网络之间自由切换。对于手持仪表,通过信号强度RSSI控制节点的运动距离,防止由于运动太远导致终端节点脱网。虽然节点的能量、计算能力、存储能力有限,但是通过休眠与拆包机制的协调,实现节能以及大数据量的传输等。

Based on TI Z -STACK protocol stack, an industrial wireless communication system was researched, adopting some novel approaches in the implementation of ZigBee applications. In industrial field, reliability is a key performance, hence we developed a maintenance method to guarantee the con- nection of each end point not being failure. Through the network parameter configuration, the node can join the specified network and flexibly switch between different networks. For portable instrument, a node＇ s moving distance can be controlled through the signal intensity of RSSI, preventing it from moving out of the network area. Although the energy, computing and storage capacity of the nodes are limited, through the dormancy and data disassembly mechanism, energy saving and large data transmission can be achieved.