基于NIOSII的电能表现场校验仪系统设计  

Design of NIOSII Based Field Calibrator for Electric Energy Meters

作　　者：张庆辉[1] 崔勇[2] 张强 

机构地区：[1]河南工业大学,郑州450001 [2]华北电力大学经济与管理学院,北京102206 [3]郑州瑞能电气有限公司,郑州450001

出　　处：《电测与仪表》2014年第17期6-11,17,共7页Electrical Measurement & Instrumentation

摘　　要：为了解决多路电压、电流同步交流采样以及运算精度不高的问题,设计开发了基于NIOSII的电能表现场校验仪。给出了系统架构、电压采集模块、电流采集模块、A/D转换模块、过零检测电路和软件开发流程。相对于传统的DSP或专用计量芯片实现方案,该设计具有设计灵活、处理速度快、运算精度高等特点。测试结果表明,该系统工作稳定、误差小。To solve the problems of alternating current and voltage synchronous sampling and low operational preci -sion, a NIOSII based field calibrator for electric energy meters has been developed and designed in this paper .The o-verall structure of the system , the voltage sampling module , the current sampling module , the A/D conversion module and the zero-crossing detecting circuit as well as the software developing flow have been presented .Comparing with the traditional implementing strategy of DSP or special metering IC , the proposed design is flexible and will offer rapid and accurate performance .The results of test indicate that the system will operate stably and accurately .

关 键 词：现场校验仪 系统设计 误差校准 

分 类 号：TM933[电气工程—电力电子与电力传动]