A miniaturised sensor for deep hole diameter measurement
1999; Elsevier BV; Volume: 23; Issue: 4 Linguagem: Inglês
10.1016/s0141-6359(99)00014-8
ISSN1873-2372
AutoresGui Yun Tian, Z.X. Zhao, R. W. Baines, P. Corcoran,
Tópico(s)Analytical Chemistry and Sensors
ResumoA miniaturised displacement senor for deep hole measurement is reported in this paper. By exploiting the induced eddy current effects detected by chip coils, the sensor generates a ’digital’ signal. The sensor chip coil can be manufactured by the similar processes to those used for manufacturing a printed circuit board (PCB) which allows them to be miniaturised. The paper elaborates on the construction and mechanism by which the displacement is directly transferred to a frequency output. It also reports on the transducer, which uses two contact probes for transmitting the displacement to a noncontact sensing element. Experimental results demonstrate the stability, linearity, measurement range and accuracy of the sensor system.
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