数字式直流电阻箱校准结果的测量不确定度评定  

Evaluation of Measurement Uncertainty for the Digital DC Resistance Boxes Calibration Results

作　　者：魏武[1] 赵训波 丁心怡 WEI wu;ZHAO Xun-bo;DING Xin-yi(The 5th Electronics Research Institute of the Ministry of Industry and Information Technology of China,GuangZhou 511370;College of Electrical and Information Engineering,Hunan University,Changsha 410082)

机构地区：[1]工业和信息化部电子第五研究所,广州511370 [2]湖南大学电气与信息工程学院,长沙410082

出　　处：《环境技术》2024年第8期197-201,共5页Environmental Technology

摘　　要：针对直流低值电阻表的溯源问题,我单位研制了一款高精度的数字式直流电阻箱。本文以数字式直流电阻箱为研究对象,介绍了数字式直流电阻箱的实现原理,搭建了数字式直流电阻箱的校准系统对其进行校准,并开展了测量不确定度评定。由测量不确定度评定结果可知,数字式直流电阻箱校准结果的测量不确定度最高可达1.4×10^(-6)。Aiming at the traceability problem of DC low value resistance meters,our unit has developed a high-precision digital DC resistance box.This paper takes the digital DC resistance box as the research object,introduces the implementation principle of the digital DC resistance box,builds the calibration system of the digital DC resistance box to calibrate it,and carries out the measurement uncertainty evaluation.According to the evaluation results of measurement uncertainty,the measurement uncertainty of the digital DC resistance box calibration results can reach up to 1.4×10~(-6).

关 键 词：直流低值电阻表 数字式直流电阻箱 测量不确定度 模拟电阻 

分 类 号：TM934.1[电气工程—电力电子与电力传动]