Improvement of temperature stability of eddy current sensor

被引：0

作者：

Huang, YP ^{[1
]}

Ding, TH ^{[1
]}

Chen, XL ^{[1
]}

机构：

[1] Tsing Hua Univ, Sensor Lab, Beijing 100084, Peoples R China

来源：

PROCEEDINGS OF THE SECOND INTERNATIONAL SYMPOSIUM ON INSTRUMENTATION SCIENCE AND TECHNOLOGY, VOL 3 | 2002年

关键词：

eddy current sensor; temperature stability; equivalent impedance; displacement measurement;

D O I：

暂无

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Main factors that cause temperature instability of eddy current sensor are analyzed. The factors consist of two parts: the influence of temperature on the equivalent impedance of the sensing coil and the temperature instability of the associated oscillator. According to the analysis, methods are brought out to improve the temperature stability. A novel eddy current sensor for displacement measurement has been developed on a polyimide film with flexible printed circuit board process (FPCB). The sensor consists of a flat coil array and a frequency modulated circuit with the long-term stability of 2 D-4. The temperature coefficient of the sensor is 0.05%FS J1.

引用

页码：399 / 402

页数：4