| 摘要 |
PROBLEM TO BE SOLVED: To provide a fire sensor and a fire detection system that are capable of improving detection accuracy with a multi-sensor after eliminating a limit in the number of installed fire sensors.SOLUTION: A fire sensor includes: a gas detector (21) that detects carbon monoxide concentrations in a space to be monitored and is composed of electrochemical type gas sensors (21a) generating electromotive forces in accordance with the carbon monoxide concentrations; a constant voltage circuit (22) for converting the electromotive forces generated by the gas detector into electric power supply having a constant electric voltage; a sensing part (23) that receives the supply of the electric power supply from the constant voltage circuit and detects whether fire has occurred or not by sensing physical phenomena caused by fire; and a fire signal outputting part (24) that receives the supply of the electric power supply from the constant voltage circuit and outputs a contact signal that comes to be in a closed state when the occurrence of fire is detected by the sensing part.SELECTED DRAWING: Figure 2 |
