Fire detector
US5767776A · kind A · utility
37Cited by
18References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 29, 1996 |
| Grant date | Jun 16, 1998 |
| Priority date | — |
| Expiry date | Jan 29, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B29/20
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A fire detector with a maximum average response time of less than 1.5 minutes is obtained by combining a smoke detector with a CO.sub.2 detector that uses NDIR sensor technology. The smoke detector is used to detect smoldering fires and to help prevent false alarms attributable to the CO.sub.2 detector. The CO.sub.2 detector is used to rapidly detect fires by measuring the rate of change of CO.sub.2 concentration. A signal processor generates an alarm signal when a smoldering fire is detected or alarm logic indicates that a fire has been detected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.