传感技术学报2013，Vol.26Issue(4)：481-486,6.DOI:10.3969/j.issn.1004-1699.2013.04.009
空心互感式位移传感器
Air-Core Mutual-Inductance Displacement Sensor
欧阳斌林 1东忠阁 1初永良 1梁冬梅1
作者信息
- 1. 东北农业大学电气与信息学院,哈尔滨150030
- 折叠
摘要
Abstract
A kind of air-core mutual-inductance displacement sensor is introduced,and the switching mode is adopted as its operating principle.The primary winding of the air-core mutual-inductor is charged and discharged bidirectionally with a constant current circuit.Displacements are measured by sampling the secondary winding based on height of narrow pulses during stable discharging periods.The measure range can reach 20 mm and the relative precision is 2％.The method of mutual-inductance measurement is demonstrated,for which two tests of axial and radial displacements and the circuit for capturing sampled data are designed respectively.Through data analysis,the method is proven available to measure displacement and reduce the interference of air core coil to measurement.The axial displacement can also be used to measure directly the thickness of dielectric substances.关键词
位移传感器/空心线圈/互感测量/开关电感/脉冲电平采样Key words
displacement sensor/air core coil/mutual inductance/switched inductor/pulse height sampling分类
信息技术与安全科学引用本文复制引用
欧阳斌林,东忠阁,初永良,梁冬梅..空心互感式位移传感器[J].传感技术学报,2013,26(4):481-486,6.
