A New Method for Measuring Magnetoelastic Sensor Resonance Frequency

摘要：

This paper describes a new method of measuring magnetoelastic sensor resonance frequency. In traditional bell-ring interrogating method, the sensor response decays rapidly if placed in viscous liquid and its resonant frequency is hard to be measured. The new method using a persistent excitation makes the sensor keep vibrating during measuring. To eliminate the interference of excitation signal to output signal, we designed a figure-8 antisymmetric structure dictation coil. The paper describes the working principle and gives out the main function circuit. This new method obtained a good result in a-amylase concentration measurement.

关键词： magnetoelastic sensor resonance frequency signal detection.

作者: Tangsheng Yang Jin Wei Qingyun Cai Lingwen He

作者单位: College of Electrical and Information Engineering,Hunan Univ,Changsha,Hunan 410082,China School of Chemistry and Chemical Engineering,Hunan Univ,Changsha,Hunan 410082,China

会议类型: 国际会议

会议名称: 2009 9th International Conference on Electronic Measurement & Instruments(第九届电子测量与仪器国际会议 ICEMI2009)

会议地点: 北京

会议语种:英文

页码: 2113-2116

在线出版日期: 2009-08-16（万方平台首次上网日期，不代表论文的发表时间）