MASTER UNIT, AUTOMATIC FIRE ALARM SYSTEM, CONTROL METHOD, AND PROGRAM

To provide an automatic fire alarm system capable of constituting a system that is unlikely to cause problems.SOLUTION: A master unit 1 is connected to a slave device 2 via a pair of electric wires 31, 32. The master unit 1 includes a communication part 13 and a mode switching part 171. The communic...

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Bibliographische Detailangaben
Hauptverfasser: YOSHII TAKESHI, TAKAHASHI HIDEAKI, NAKAGAWA YOSHIAKI, MATAYOSHI RYUJI
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:To provide an automatic fire alarm system capable of constituting a system that is unlikely to cause problems.SOLUTION: A master unit 1 is connected to a slave device 2 via a pair of electric wires 31, 32. The master unit 1 includes a communication part 13 and a mode switching part 171. The communication part 13 has a first communication function and a second communication function. The first communication function is a function of detecting a short circuit between the pair of electric wires 31 and 32 and receiving a fire report notifying the occurrence of a fire. The second communication function is a function of receiving an address for identifying the slave unit 2 by communicating with the slave unit 2 via the pair of electric wires 31 and 32. The mode switching part 171 switches the operation mode of the communication part 13 between a first mode in which a fire alarm is received from the slave unit 2 and a second mode in which the first communication function and the second communication function are valid.SELECTED DRAWING: Figure 1 【課題】不具合の発生しにくい自動火災報知システムを構築可能とする。【解決手段】親機1は、一対の電線31,32を介して子機2に接続される。親機1は、通信部13とモード切替部171とを備える。通信部13は、第1通信機能及び第2通信機能を有する。第1通信機能は、一対の電線31,32間の短絡を検知することで、火災の発生を通知する火災報を受信する機能である。第2通信機能は、一対の電線31,32を介して子機2と通信することで、子機2を識別するアドレスを受信する機能である。モード切替部171は、通信部13の動作モードを、火災報を子機2から受信する第1モードと、第1通信機能及び第2通信機能が有効な第2モードと、で切り替える。【選択図】図1