Sensors 2012, 12(8), 10820-10833; doi:10.3390/s120810820
Article

A Linear, Millimetre Displacement-to-Frequency Transducer

1,* email and 2email
Received: 1 July 2012; in revised form: 21 July 2012 / Accepted: 26 July 2012 / Published: 6 August 2012
(This article belongs to the Section Physical Sensors)
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Abstract: The paper presents a novel linear, high-fidelity millimetre displacement-to-frequency transducer, based on the resistive conversion of displacement into a proportional voltage, and then frequency. The derivation of the nonlinearity, fidelity and sensitivity of the transducer is presented. Experimental results confirm that a displacement of 0–100 mm is converted into a frequency range of 0–100 kHz, with a normalised fidelity factor of 99.91%, and a worst-case nonlinearity of less than 0.08%. Tests using laboratory standards show that a displacement of 10 mm is transduced with an accuracy of ±0.6%, and a standard deviation of 530 Hz. Estimates included in the paper show that the transducer could cost less than 1% of existing systems for millimeter displacement measurement.
Keywords: millimetre displacement; displacement-to-frequency; high-fidelity
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Agee, J.T.; Petto, F.K. A Linear, Millimetre Displacement-to-Frequency Transducer. Sensors 2012, 12, 10820-10833.

AMA Style

Agee JT, Petto FK. A Linear, Millimetre Displacement-to-Frequency Transducer. Sensors. 2012; 12(8):10820-10833.

Chicago/Turabian Style

Agee, John T.; Petto, Four K. 2012. "A Linear, Millimetre Displacement-to-Frequency Transducer." Sensors 12, no. 8: 10820-10833.


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