多功能微机电量变送器

Multifunctional Microcomputer-Based Transducer for Measuring Multiple Electrical Quantities

介绍一种新型多功能微机电量变送器．该变送器以8031单片机为核心，能对31条高压馈出线的电流、电压、有功功率、无功功率以及功率因数进行综合数字化测量，并将测量结果以十进制形式，通过8031单片机的串行口输出．所选数学模型适用于测量正常运行时的电网参数，采用两点交流采样法，数据采集系统采用了两级模拟开关结构．软件设计采用模块式结构．

This paper describes a new type of microcomputer-based multifunctional transducer for measuring muliple clectricaal quantities. This transducer with the help of the 8031 single-chip computer is able to measure synthetically the electrical current and voltage, three phase active and reactive powers,as well as power coefficient for 31 mains, and outputs the results in decimal digital form through the serial communication port of thc 8031 single-chip computer. The mathematics model aims at measuring the three phase elelctrical quantities of the normal working power network, and the'two point AC samplling method' is used. The data acquisition system adopts a structure of two-level analog multip1exers. The software is designed by the use of model block structure.