仪器仪表学报
儀器儀錶學報
의기의표학보
CHINESE JOURNAL OF SCIENTIFIC INSTRUMENT
2010年
3期
678-681
,共4页
电解质溶液%电导率%电涡流%非接触测量%非侵入测量
電解質溶液%電導率%電渦流%非接觸測量%非侵入測量
전해질용액%전도솔%전와류%비접촉측량%비침입측량
electrolyte solution%conductivity%eddy current%contactless measurement:non-invasive measurement
本文将常用于金属探伤的对射式涡流传感器应用于电解质溶液的电导率测量,对其信号处理电路进行了改进设计,提出了一种基于高速模拟乘法器的微弱涡流信号提取电路,并在分析系统等效电路和干扰途径的基础上提出了一种抑制干扰的方法.在此基础上,构建了一套电解质溶液电导率的非接触非侵入式测量系统.该系统结构简单,测量有效,其测量误差不超过1.5%(FS).
本文將常用于金屬探傷的對射式渦流傳感器應用于電解質溶液的電導率測量,對其信號處理電路進行瞭改進設計,提齣瞭一種基于高速模擬乘法器的微弱渦流信號提取電路,併在分析繫統等效電路和榦擾途徑的基礎上提齣瞭一種抑製榦擾的方法.在此基礎上,構建瞭一套電解質溶液電導率的非接觸非侵入式測量繫統.該繫統結構簡單,測量有效,其測量誤差不超過1.5%(FS).
본문장상용우금속탐상적대사식와류전감기응용우전해질용액적전도솔측량,대기신호처리전로진행료개진설계,제출료일충기우고속모의승법기적미약와류신호제취전로,병재분석계통등효전로화간우도경적기출상제출료일충억제간우적방법.재차기출상,구건료일투전해질용액전도솔적비접촉비침입식측량계통.해계통결구간단,측량유효,기측량오차불초과1.5%(FS).
In this paper,the opposite-type eddy current sensor frequently used in metal defect detection is introduced into the measurement of electrolyte solution conductivity.The existing signal processing circuit is improved.A weak signal pick up circuit based on a high-speed analog multiplier is'developed,and an interference suppressing method is proposed.As a result,a contactless non-invasive electrolyte solution conductivity measurement system is developed.This system has simple structure and effective performance,and the measurement error is less than 1.5%(FS).
