| 摘要 |
PROBLEM TO BE SOLVED: To provide an alarm system capable of monitoring an abnormality such as a fire disaster at a prescribed spot including fire or a heat source apparatus in spots and suppressing a non-fire notification.SOLUTION: An alarm unit 100-1 and a plurality of smoke measurement chips 10-11 to 10-14 constitute an alarm system A1, for example. The smoke measurement chips 10-11 to 10-14 detect a smoke concentration abnormality indicated by a result of smoke concentration measurement and transmit a smoke concentration abnormality detection signal to the alarm unit 100-1. The alarm unit 100-1 receives the smoke concentration abnormality detection signal from each of the smoke measurement chips 10-11 and 10-12, for example, which are previously associated with each other among the plurality of smoke measurement chips 10-11 to 10-14 and starts storage when an AND condition of the respective smoke concentration abnormality detection is satisfied. When the AND condition has been satisfied over a predetermined storage time, the alarm unit 100-1 determines that the abnormality occurs and outputs a fire alarm, for example, as an abnormality alarm. The alarm unit 100-1 also transmits an abnormality interlock signal to alarm units 100-2 to 100-4 of other alarm systems A2 to A4 and causes the units to output a fire alarm. |
