Application of TMR effect in time grating sensor

WEI Jia-qi; TIAN Yue; ZHANG Chao; ZHANG Bo

doi:10.13873/J.1000-9787(2016)10-0145-03

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Application of TMR effect in time grating sensor

更新时间：2025-09-11

- Application of TMR effect in time grating sensor
- Vol. 35, Issue 10, Pages: 145-147(2016)
- 作者机构：
  
  北京科技大学弱磁检测及应用工程技术研究中心
- 作者简介：
- 基金信息：
- DOI：10.13873/J.1000-9787(2016)10-0145-03
  CLC： TP212
- Published：2016
- 稿件说明：
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[1]魏家琦,田跃,张超,张波.TMR效应在时栅传感器中的应用[J].传感器与微系统,2016,35(10):145-147.

WEI Jia-qi, TIAN Yue, ZHANG Chao, et al. Application of TMR effect in time grating sensor[J]. 2016, 35(10): 145-147.
[1]魏家琦,田跃,张超,张波.TMR效应在时栅传感器中的应用[J].传感器与微系统,2016,35(10):145-147. DOI： 10.13873/J.1000-9787(2016)10-0145-03.

WEI Jia-qi, TIAN Yue, ZHANG Chao, et al. Application of TMR effect in time grating sensor[J]. 2016, 35(10): 145-147. DOI： 10.13873/J.1000-9787(2016)10-0145-03.

摘要

现有时栅主要还是利用变耦合系数变压器的原理

采用缠绕感应线圈于测头上的方法来提取测头与齿之间磁耦合系数变化的信号。但实验表明:这种方法所提取到的电信号相对较弱而且检测距离极小。为了解决上述问题

又提出一种基于隧道磁阻（TMR）磁性隧道结的信号提取方法

TMR是一种对于微弱磁场变化有着极高灵敏度的磁阻效应

在实验中通过这种方法取得了良好的效果

提高了检测距离以及信号幅值。

Abstract

Existing time grating is based on the principle of variable coupling coefficient transformer that adopt the method of winding coil around the detecting probe to extract signal of magnetic coupling coefficient variation between detecting probe and gear. But experiment shows that the extracted electrical signal extracted by this method is relative weak

meanwhile

the detection distance is extremely small. To solve the above problems

a new method of signal extraction based on tunnel magneto resistance（ TMR） is presented. TMR is a kind of magnetoresistance effect

which has a very high sensitivity for weak magnetic field

variation good effect are achieved by this method in experiment and detection distance as well as signal amplitude are improved.

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references

基于STM32的时栅转台高精度自动标定系统设计 [J]. 杨继森,何建,彭东林,冯济琴,郑方燕. 传感器与微系统 . 2014(03)

时栅位移传感器原理与发展历程 [J]. 彭东林,刘小康,张兴红,陈锡侯,朱革,杨继森,王先全,高忠华,郑方燕. 重庆理工大学学报(自然科学版) . 2010(10)

基于变耦合系数变压器原理的时栅位移传感器设计 [J]. 杨伟,彭东林,朱革,陈锡侯. 仪器仪表学报 . 2006(11)

时栅位移传感器研究 [J]. 彭东林,刘小康,张兴红,陈锡候. 重庆工学院学报 . 2006(05)

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