基于MSP430F149的自适应功率因数测量仪的研究  

Research of Self-regulation Power Factor Measure Apparatus Based on MSP430F149

作　　者：徐云[1] 叶朝锋[1] 秦春林[1] 

机构地区：[1]清华大学电机系电力系统国家重点实验室,北京100084

出　　处：《现代科学仪器》2007年第6期53-56,共4页Modern Scientific Instruments

摘　　要：本文介绍了基于MSP430F149的功率因数测量硬件系统及其算法设计。本测量系统对待测信号进行采样后,作数字低通滤波和DFT运算以估算其频率,从而根据信号频率灵活调整采样周期,能够工作在很宽的频率范围内。在采用LCD显示的同时,通过RS232接口可以在PC机上实时显示测量结果和信号波形,人机界面友好。This article mainly introduce the hardware system and arithmetic designing of Power factor measure system based on MSP430F149. This designing would do low wave filtering and DFT process, so as to estimate the frequency of the signal. Therefor the system can change it＇ s sample cycle according the signal frequency. The system uses PC screen to show the result momentarily though RS232 serial communication as well as using LCD. The interface is very friendly.

关 键 词：功率因数测量 MSP430F149 浮点数运算 串口通讯 MFC 

分 类 号：TM933.31[电气工程—电力电子与电力传动]