| 摘要 |
PROBLEM TO BE SOLVED: To provide a fire detection system which makes it possible to detect a fire in its earlier stage and a fire alarm. SOLUTION: The fire alarm 1 is equipped with a thermal sensor 11, a wind velocity sensor 13, a CO sensor 15, a hydrocarbon gas sensor 17, a decision part 21 which decides that a fire takes place by inputting signals from the respective sensors, a liquid crystal display part 25 which displays the decision result of the decision part, and a voice alarm part 23. When a fire takes place, the wind velocity increases faster than the temperature and the wind velocity sensor 13 which measures the wind velocity is provided to provide the fire detection system which can detect the fire in its earlier stage.
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