基于嵌入式操作系统的无线电力监测系统设计

Designing of Wireless Power Monitoring System Based on Embedded Operating System

摘要:

为了对各个用电设备或用电用户的电力使用情况进行精细化监测,从而对电力评估、管理起到基础性作用,设计了一种基于Contiki嵌入式操作系统的无线电力监测系统,以6LoWPAN作为无线通信协议；该系统由终端节点、路由节点、接入节点、GPRS模块及计算机数据中心构成；介绍了基于TV3154、TA5212及信号调理滤波网络、ADE7653电力测量、MSP430F1611主控及CC2420射频的终端节点、接入节点硬件设计方法；介绍了基于Contiki,结合6LoWPAN无线协议及I²C、UART等串口通信协议的终端节点、接入节点软件设计方法；实验结果表明,系统对电压、电流、功率的测量误差均保持在2% 以内,能够实现组网,两个节点之间的无线通信距离可达80 m。

Abstract:

In order to monitor power of every electro-equipment more exact, a power monitoring system based on embeded operating system is designed. The wireless communitaion protol 6LoWPAN is used in this system. This power monitoring system consists of ending node, routing node, inserting node, GPRS node and information management center. In this paper, the hardware design method of ending node and inserting node is introduced based on sensor TV3154 , sensor TA5212, power monitoring chip ADE7953, MCU MSP430F1611 and CC2420. The software design method of ending node and inserting node is proposed based on 6LoWPAN, I²C and UART. The experiment result shows that the error of voltage, current and power are all less than 2%. The power monitoring system could succefully build wireless network and the wireless communication distance is 80 m.