基于ZigBee的大型公共建筑能耗采集器设计

摘要

To solve the problems such as wiring complexity,high communication costs and low transmission rate in the real-time energy acquisition system of large public buildings,this paper proposes a design scheme of energy data collector based on ZigBee.With STM32 as the main controller,the ZigBee acquisition unit communicate with the smart meter based on Modbus through the RS485 interface,and send them to coordinators via ZigBee internet.Coordinators communicate with the main collector by the serial port.The main controller sends data to computer via Ethernet.With the software and hardware design,take the XY194E for example,several parameters like voltage are tested.The result indicates that the scheme which overcomes the shortcomings of traditional manual acquisition and transmission,and improves the real-time and accuracy of data acquisition and transmissioncan,meet the requirement of the energy acquisition system.%针对大型公共建筑能耗实时采集系统中存在的布线复杂、通信成本高、安全性低等问题,提出一种基于ZigBee技术的能耗数据采集器设计方案;该方案采用STM32做主控制器,ZigBee采集单元通过RS485接口实现与基于Modbus协议的智能电表之间的数据通信,并采用ZigBee无线网络将数据发送至协调器,协调器通过USART方式与主控制器进行通信;主控制器利用以太网将数据发送至上位机;通过软硬件设计,以XY194E智能电表为例,对其电能参数进行测试采集,结果表明该方案克服了传统人工采集传输的不足,提高了数据采集传输的实时性、准确性,能够满足能耗采集系统的要求.