一种小型高精度微电流测量模块设计  

Design of a Small Micro-current Measurement Module with High Precision

作　　者：殷少轩 苏叶 王澳辉 何孟轩 刘明辉 Yin Shaoxuan;Su Ye;Wang Aohui;He Mengxuan;Liu Minghui(Naval University of Engineering Nuclear Science and Technology,Wuhan 430033,China)

机构地区：[1]海军工程大学核科学技术学院,武汉430033

出　　处：《船电技术》2021年第4期39-42,共4页Marine Electric & Electronic Engineering

摘　　要：针对现场测试中需要测量纳安级或者更小微电流的情况,本文设计一种可通过微控制器程控的高精度、高稳定性的小型微电流测量模块。该测量模块由I/V转换模块、A/D转换模块和基准源等电路组成。微控制器可通过6根数据线与ADC通信,从而实现对测量模块的控制。测量模块的量程是-1000 nA到1000 nA,精度可达0.1 nA级。In view of the need to measure nano-ampere or smaller micro-currents in field-test,small micro-current measurement module with high precision and high stability is designed based on a programmable microcontroller.The measurement module is composed of I/V conversion module,A/D conversion module and reference source circuits.The microcontroller can be communicated with the ADC through 6 data lines so as to control the measurement module.The measurement range of the module is from-1000nA to 1000nA,and the accuracy can reach 0.1nA.

关 键 词：纳安级 微电流测量 程控 高精度 

分 类 号：TM933.1[电气工程—电力电子与电力传动]