Fire detection sensors
US6818893B2 · kind B2 · utility
9Cited by
8References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 8, 2002 |
| Grant date | Nov 16, 2004 |
| Priority date | — |
| Expiry date | Feb 27, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B17/12
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A flame detection apparatus has a focused array based sensor which is responsive to radiation having a predefined wavelength for generating an image of the infrared radiation emitted within a monitored region, and means for measuring the spectral ratio of the intensity of radiation having a first wavelength emitted within the monitored region to the intensity of radiation having a second wavelength emitted within the monitored region. Processing means analyzes the output of the focused array based sensor and the spectral ratio measuring means for responses indicative of the presence of a flame within the monitored region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.