基于阻抗响应的磁弹性传感器共振频率测量系统

程鹏; 高爽; 张文栋; 桑胜波

doi:10.3788/OPE.20142211.3012

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基于阻抗响应的磁弹性传感器共振频率测量系统

微纳技术与精密机械 | 更新时间：2020-08-13

- 基于阻抗响应的磁弹性传感器共振频率测量系统
- Resonant frequency measurement system for magnetoelastic sensor based on impedance response
- 光学精密工程 2014年22卷第11期页码：3012-3018
- 作者机构：
  
  1. 太原理工大学新型传感器与智能控制教育部重点实验室,山西太原,030024
  2. 太原理工大学信息工程学院微纳系统研究中心,山西太原,030024
  3. 太原理工大学物理与光电工程学院,山西太原,030024
- 作者简介：
- 基金信息：
  
  山西出国人员留学基金资助项目(No.2010-030)();山西省青年基金资助项目(No.2012021013-1)();中国博士后科学基金资助项目(No.2011M5
- DOI：10.3788/OPE.20142211.3012
  中图分类号： TP212.13;TB939
- 收稿日期：2014-01-23，
  
  修回日期：2014-03-14，
  
  纸质出版日期：2014-11-25
- 稿件说明：
移动端阅览
程鹏, 高爽, 张文栋等. 基于阻抗响应的磁弹性传感器共振频率测量系统[J]. 光学精密工程, 2014,22(11): 3012-3018

CHENG Peng, GAO Shuang, ZHANG Wen-dong etc. Resonant frequency measurement system for magnetoelastic sensor based on impedance response[J]. Editorial Office of Optics and Precision Engineering, 2014,22(11): 3012-3018
程鹏, 高爽, 张文栋等. 基于阻抗响应的磁弹性传感器共振频率测量系统[J]. 光学精密工程, 2014,22(11): 3012-3018 DOI： 10.3788/OPE.20142211.3012.

CHENG Peng, GAO Shuang, ZHANG Wen-dong etc. Resonant frequency measurement system for magnetoelastic sensor based on impedance response[J]. Editorial Office of Optics and Precision Engineering, 2014,22(11): 3012-3018 DOI： 10.3788/OPE.20142211.3012.

摘要

建立了一套基于阻抗响应的磁弹性传感器共振频率测量系统

研究了该系统的共振频率测量原理

等效电路模型和磁弹性传感器共振频率测量电路。首先

介绍通过磁弹性传感器阻抗变化获取其共振频率的原理;根据磁弹性传感器对线圈阻抗的影响建立了磁弹性传感器等效模型电路。然后

设计了一种基于片上系统的阻抗测量电路。最后

验证了该磁弹性传感器共振频率测量系统的可行性和可靠性。实验结果表明:该系统测得的频率分辨率小于0.1 Hz

精度为0.5%。与传统网络分析仪系统相比

测量同一Metglas 2826MB材料所得共振频率仅相差60 Hz;测量两个长度不同的Metglas 2826MB材料所得共振频率比为0.74

与理论计算值0.8相近。另外

该系统也可用于磁弹性传感器在不同介质中的共振频率测量。得到的结果显示:设计的测量系统完全可取代昂贵庞大的网络分析仪

具有高度集成

强抗干扰

低成本和便携式测量等优点。

Abstract

A resonant frequency measurement system for a magnetoelastic (ME) sensor based on the impedance response was established and the measuring mechanism

equivalent circuit model and the measuring circuit of the ME sensor were researched. First

the measurement mechanism of resonance frequency was introduced based on the impedance change of the ME sensor. The equivalent model circuit of the ME sensor was established according to the affect of the ME sensor on a coil impedance. Then an impedance measurement circuit based on system-on-chip was designed. Finally

the experiments were performed to verify the feasibility and reliability of the resonant frequency measurement system for the ME sensor. Experimental results indicate that the frequency resolution and the accuracy of the system are less than 0.1 Hz

and 0.5% respectively. Moreover

the deviation between the resonant frequency measurement system and the traditional network analyzer platform is 60 Hz for a same Metglas 2826MB material; the resonance frequency radio of two Metglas 2826MB materials with different lengths is 0.74

similar with the theoretical value of 0.8. The resonant frequency measurement system works well in different media

which means that the system can replace an expensive and large network analyzer and is characterized by higher integration

stronger anti-interference

lower costs and portable measurement.

关键词

Keywords

references

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