摘要
设计了一种基于超低功耗MSP430F149为核心的高精度的电量测量装置,该装置由硬件电路和控制软件来共同实现。主要阐述了系统的信号采样、信号隔离及防雷击过电压电路的设计,交流采样和数字滤波的算法,并实现了ModBus-RTU协议下的远程通信等内容。应用结果表明该装置满足工业级的需求,运行稳定可靠,通用性好,测量精度高,具有很强的实用性和推广价值。
A new high-precision power measurement device based on ultra-low power MSP430F149 as a core was designed and realized.This device was achieved by the building of electric circuit hardware and controlling software.This paper described the system＇s design of signal sampling,signal isolating and anti-lightning overvoltage circuit,and AC sampling and algorithms of digital filtering.And it introduced the remote communication under the protocol of ModBus-RTU.The application results show that the device satisfies the needs of industrial level.It is stable,reliable,flexible,and it has high precise.It has extremely strong practicability and popularization value.
出处
《仪表技术与传感器》
CSCD
北大核心
2010年第12期101-103,110,共4页
Instrument Technique and Sensor
关键词
高精度
电量监测
远程通信
MSP430F149
high accuracy
monitoring of electric quantity
remote communication
MSP430F149
