Strain gauge pressure sensor circuit with sensor disconnect detection
US9322732B2 · kind B2 · utility
4Cited by
6References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 17, 2014 |
| Grant date | Apr 26, 2016 |
| Priority date | — |
| Expiry date | May 18, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L27/007
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An electronic circuit for processing signals from a strain gauge pressure sensor includes an anti-alias filter, an analog-to-digital conversion circuit, and a detection circuit for detecting when the sensor is unexpectedly disconnected from the signal processing circuit. The detection circuit provides a yes/no indication of the connection of the pressure sensor to the circuit based upon whether a common mode voltage associated with one of the signal terminals of the pressure sensor is out of range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.