Method and apparatus for monitoring a signal
US9331682B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 26, 2015 |
| Grant date | May 3, 2016 |
| Priority date | — |
| Expiry date | Feb 26, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/23201
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A method of monitoring an analog signal output from a sensor comprising comparing the amplitude of the analog signal to a first high and low threshold, setting a primary monitoring signal to a first value when the amplitude of the analog signal exceeds the first high threshold, setting the primary monitoring signal to a second value when the amplitude of the analog signal decreases below the first low threshold, comparing the amplitude of the analog signal to a second high and low threshold, setting a secondary monitoring signal to a first value when the amplitude of the analog signal exceeds the second high threshold, setting the secondary monitoring signal to a second value when the amplitude of the analog signal decreases below the second low threshold, comparing the primary and secondary monitoring signals and determining from the comparison whether an error exists with the monitoring of the analog signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.