Method and apparatus for optically storing a binary state
US9355544B1 · kind B1 · utility
1Cited by
1References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 2, 2011 |
| Grant date | May 31, 2016 |
| Priority date | — |
| Expiry date | Mar 22, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B1/08
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A fault indication method for equipment includes receiving a fault signal indicative of a fault of a device; energizing a light emitter based on the received fault indication, in which a luminous material is made to fluoresce based on receipt of light emitted by the light emitter; detecting fluorescence of the luminous material by a light detector, and outputting a voltage and/or current indicative of the fluorescence; and providing a fault output signal when the voltage and/or current exceeds a predetermined value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.