Method and apparatus for electronic compensation of erroneous readings caused by resonance in a capacitive pressure transducer
US6119523A · kind A · utility
7Cited by
0References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 1, 1999 |
| Grant date | Sep 19, 2000 |
| Priority date | — |
| Expiry date | Jul 1, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L9/12
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for electronic compensation of erroneous readings is based on the observation that a sensor serving as a transducer is caused to resonate. The erroneous reading caused by the resonance is measured and a compensation signal is feedback into the measurement element, the signal being essentially unfiltered. An apparatus uses error detection and compensation circuits whose upper barrier frequency are above the resonance frequency of the transducer for detecting an error signal caused by resonance in the transducer and for generating a compensation signal for feeding into the detector sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.