Early fire detection using temperature and smoke sensing
US6195011A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 2, 1998 |
| Grant date | Feb 27, 2001 |
| Priority date | — |
| Expiry date | Oct 2, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B29/24
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A fire detection system cross correlates the responses of a temperature and smoke sensing units to achieve early-detection characteristics. The system also performs threshold-type detection on the smoke obscuration, temperature, and rate of temperature rise. If any of the thresholds are surpassed, the same alarm condition will be set. As a result, the detection characteristics of the resulting detector can be no worse than the conventional threshold-only systems. The system advantageously, however, provides for the early detection of fires that satisfy the cross correlation characteristics. Thus, it achieves the best performance characteristics of both approaches.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.