Method of and apparatus for automated sensor diagnosis through quantitative measurement of one of sensor-to-earth conductance or loop resistance
US5499023A · kind A · utility
39Cited by
7References
20Claims
0Family size
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Key dates
| Filing date | May 27, 1992 |
| Grant date | Mar 12, 1996 |
| Priority date | — |
| Expiry date | May 27, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08C25/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of and apparatus for automated sensor validation diagnosis during and before operation of pluralities of sensors connected by multiplex sequence in a loop with analog-to-digital converter voltage measurement apparatus responsive to the sensor signals for the primary task of validating a process under monitor by the sensors, wherein provision is made for periodically or selectively quantitatively measuring either (or both) sensor-to-earth conductance or loop resistance of the sensors to insure sensor viability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.