Referenced Items are not available for this document.
For high-accuracy signal processing of differential-capacitance transducers, an interface circuitry is developed based on a relaxation oscillator. Two capacitors of the transducer are multiplexed by diode switches to form the op-amp-based integrator. The duty ratio of the oscillator output then measures the ratio of two capacitances. A circuit analysis shows that the interface can detect the capacitance change as small as 0.01% of the total capacitance. Experimental results are also given to confirm the analysis
Published in:
Instrumentation and Measurement Technology Conference, 1997. IMTC/97. Proceedings. Sensing, Processing, Networking., IEEE
(Volume:2
)
Date of Conference: 19-21 May 1997
- Page(s):
- 1164 - 1168 vol.2
- Meeting Date :
- 19 May 1997-21 May 1997
- ISSN :
- 1091-5281
- Print ISBN:
- 0-7803-3747-6
- INSPEC Accession Number:
- 5709376
- Conference Location :
- Ottawa, Ont.
- Digital Object Identifier :
- 10.1109/IMTC.1997.612383
- Product Type:
- Conference Publications
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