Fire sensor and fire detecting method
US6154142A · kind A · utility
14Cited by
4References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 26, 1999 |
| Grant date | Nov 28, 2000 |
| Priority date | — |
| Expiry date | Oct 26, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B29/24
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A temperature difference calculator portion detects temperature difference indicating the rate of temperature rise when it receives heat generated by the fire. A correction factor deciding portion decides a correction factor for a smoke signal based on an external temperature and the temperature difference. Finally, a smoke data correction portion corrects smoke data by multiplying the smoke signal detected by a smoke detector and the correction factor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.