Fire sensor and fire detecting method

Details Fire sensor and fire detecting method Fire sensor and fire detecting method

1999-10-26

2000-11-28

Wu, Daniel J.

Communications: electrical

Condition responsive indicating system

Specific condition

340577, 340584, 340628, G08B 1700

Patent

active

061541427

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.

REFERENCES:
patent: 4420746 (1983-12-01), Malinowski
patent: 4922230 (1990-05-01), Ohtani et al.
patent: 5254975 (1993-10-01), Torikoshi
patent: 5627514 (1997-05-01), Morita

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