Design of V/I change-over circuit for LVDT displacement sensor

BAI Shou-jun; WANG Ming; LANG Lang; ZHAO Fa

doi:10.13873/j.1000-97872012.04.045

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Design of V/I change-over circuit for LVDT displacement sensor

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- Design of V/I change-over circuit for LVDT displacement sensor
- Vol. 31, Issue 4, Pages: 113-115+126(2012)
- 作者机构：
  
  安徽工程大学安徽省电气传动与控制重点实验室
- 作者简介：
- 基金信息：
- DOI：10.13873/j.1000-97872012.04.045
  CLC： TP212
- Published：2012
- 稿件说明：
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[1]柏受军,王鸣,郎朗,赵发.LVDT位移传感器电压电流转换电路的设计[J].传感器与微系统,2012,31(04):113-115+126.

BAI Shou-jun, WANG Ming, LANG Lang, et al. Design of V/I change-over circuit for LVDT displacement sensor[J]. 2012, 31(4): 113-115+126.
[1]柏受军,王鸣,郎朗,赵发.LVDT位移传感器电压电流转换电路的设计[J].传感器与微系统,2012,31(04):113-115+126. DOI： 10.13873/j.1000-97872012.04.045.

BAI Shou-jun, WANG Ming, LANG Lang, et al. Design of V/I change-over circuit for LVDT displacement sensor[J]. 2012, 31(4): 113-115+126. DOI： 10.13873/j.1000-97872012.04.045.

摘要

为使传感器输出信号能够远距离传输

设计了一种0～5 V到4～20 mA的电压电流转换电路。在Howland电流泵电路的基础上

增加电压跟随器和偏置直流放大器

实现电压电流的精确转换。仿真分析和实验测试结果表明:电路能够满足传感器电流输出的要求

并已成功应用于LVDT位移传感器调理电路。

Abstract

To make the sensor’s output signal can be transmitted long distances

a V/I converter that converts 0

V input to 4

0 mA output is designed.Increasing the voltage follower and bias current amplifier on the basis of Howland current pump circuit.Accurate voltage and current conversion is achieved.The results of simulation and experiment indicate that the circuit can meet the requirements of the sensor’s current output

and has been successfully applied in LVDT displacement sensor conditioning circuit.

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references

现代传感器发展方向 [J]. 孙圣和. 电子测量与仪器学报 . 2009(01)

低噪声无偏置电压-电流变换器 [J]. 邢维巍,樊尚春,蔡晨光. 传感技术学报 . 2007(10)

一种基于AD598的精密位移传感器的研制 [J]. 尹成竹,柏受军,黄平,张荣标. 传感器与微系统 . 2007(02)

基于运算放大器和模拟集成电路的电路设计[M]. 西安交通大学出版社 , (美)赛尔吉殴·佛朗哥（SergioFranco）著, 2004

非电量电测技术[M]. 机械工业出版社 , 严钟豪, 1983

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