基于MSP430的高精度电量测量装置的设计

The Design of High Accuracy Electric Quantity Survey Device Based on MSP430

针对目前我国电量测量发展现状,及电力行业对电量测量精度不断提高的需求,文章提出一种以超低功耗单片机MSP430F149为平台,开发出一种新的高精度电量测量装置。文章主要阐述了该装置的系统硬件构成:外围采样信号输入电路及频率测量电路的硬件设计;交流采样和数字滤波的算法,以及抗干扰技术的运用等。应用结果表明,该装置运行稳定可靠,检测精度高,具有一定的实用性和推广价值。

In view of the present development situation of power measurement in China and the rising demand on the measurementaccuracy in power industry,this article develops a new high-precision power measurement device oriented on a MSP430F149 ultralow power MCU platform.This article focuses on the system hardware of the installation：external sampling signal input circuit andthe frequency measurement circuit of the hardware design;AC sampling and digital filtering algorithms,and the use of such anti-jamming technology.Application results show that the device is stable,reliable,highly precise and practical,worth promoting.