Sensor failure or abnormality detecting system incorporated in a physical or dynamic quantity detecting apparatus
US6422088B1 · kind B1 · utility
72Cited by
8References
64Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 21, 2000 |
| Grant date | Jul 23, 2002 |
| Priority date | — |
| Expiry date | Jan 25, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R17/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A reference voltage generating circuit is constituted by resistors RE and RF each having a resistance not influenced by an application of pressure. The reference voltage generating circuit is connected between one and the other ends of a bridge circuit. A failure judgement of the bridge circuit is performed based on a comparison of a voltage difference VBC between two midpoints B and C of the bridge circuit and voltage differences VCE and VBE between a reference voltage level of the reference voltage generating circuit and the voltage levels of two midpoints B and C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.