Referenced Items are not available for this document.
A novel low-cost smart interface for self-generating sensors, e.g., thermopiles and thermocouples, is presented. The proposed interface acts as an asynchronous converter for dc voltages employing a relaxation oscillator which output a period-modulated signal. A microcontroller is used to measure the output signal from the interface, to process data, and to output the measured sensor signal. The system provides an intrinsic A/D converter. Experimental results show that the interface is able to measure voltages in the range of 0 V to 5 V with an accuracy and resolution of ±64×10-6 and 20×10-6, respectively. The measurement time is less than 100 ms
Published in:
Instrumentation and Measurement, IEEE Transactions on
(Volume:47
,
Issue:
1
)
Date of Publication: Feb 1998
- Page(s):
- 285 - 288
- ISSN :
- 0018-9456
- INSPEC Accession Number:
- 6093667
- Digital Object Identifier :
- 10.1109/19.728835
- Product Type:
- Journals & Magazines
- Date of Current Version :
- 06 August 2002
- Issue Date :
- Feb 1998
- Sponsored by :
- IEEE Instrumentation and Measurement Society
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