Title :
The development of displacement eddy current sensor independent of sample electromagnetic properties
Author :
Tuo, Yang ; Yating, Yu ; Pingan, Du ; Yongchun, Liang
Author_Institution :
Sch. of Mechatron. Eng., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
The displacement between the coil of eddy current sensor and the sample can influence the distribution of the eddy current in sample, consequently cause the change of the coil impedance, so the eddy current can be developed as a displacement measurement device. This paper aims to develop a new of eddy current sensor which is independent of the sample electromagnetic properties. Extended from the theoretical analysis and experiment study for the relationship of the coil resistance and inductance, a new eddy current displacement measurement circuit is presented. Then, the validation for the developed displacement eddy current sensor is performed by a series of experiments. The experiment result indicates that the new eddy current displacement sensor can eliminate effectively the measurement error due to the change of the sample electromagnetic properties.
Keywords :
eddy current testing; electric sensing devices; coil inductance; coil resistance; displacement eddy current sensor; electromagnetic property; Coils; Copper; Displacement measurement; Electrical resistance measurement; Electronic mail; Extraterrestrial measurements; Phase measurement; Eddy Current Sensor (ECS); Micro-Controller Unit (MCU); experiment; inductance; measuring circuit; resistance;
Conference_Titel :
Mechanical and Electrical Technology (ICMET), 2010 2nd International Conference on
Conference_Location :
Singapore
Print_ISBN :
978-1-4244-8100-2
Electronic_ISBN :
978-1-4244-8102-6
DOI :
10.1109/ICMET.2010.5598402
