SLAVE UNIT OF AUTOMATIC FIRE ALARM SYSTEM, MASTER UNIT OF AUTOMATIC FIRE ALARM SYSTEM AND AUTOMATIC FIRE ALARM SYSTEM USING THEM

• Main Authors: ITO SUSUMU, LI RAN, MIZUTA TOMOAKI, OI MOTOHIRO, GOSHONOO KAZUHIKO
• Format: Patent
• Language: English; Japanese
• Published: 10.11.2016
• Subjects: ALARM SYSTEMS; ORDER TELEGRAPHS; PHYSICS; SIGNALLING; SIGNALLING OR CALLING SYSTEMS

PROBLEM TO BE SOLVED: To provide a slave unit capable of reducing the possibility of making an unexpected erroneous alarm.SOLUTION: A slave unit 1 in an automatic fire alarm system 100 includes a communication section 16, a determination section 171 and a control unit 172. The communication section 16 communicates with a master unit 2. Determining an occurrence of a fire, the determination section 171 enters into a standby state to issue a fire alarm, and when determining to establish an interlock, the determination section 171 enters into a standby state to issue a notification of establishing interlock. The control unit 172 notifies either one of the fire alarm or the interlock notification to the master unit 2 by changing the current flowing on a pair of wires 51 and 52. When receiving a permission from the master unit 2 in the standby state, the control unit 172 notifies a specific notification which includes at least one of the fire alarm and the interlock notification to the master unit 2.SELECTED DRAWING: Figure 1 【課題】子機が誤報などの予期せぬ動作を行う可能性を低減する。【解決手段】自動火災報知システム１００の子機１は、通信部１６と、判断部１７１と、制御部１７２とを備えている。通信部１６は、親機２との間で通信を行う。判断部１７１は、火災と判断すれば火災報を、連動させると判断すれば連動報を通知可能な準備状態に移行する。制御部１７２は、一対の電線５１，５２を流れる電流を変化させることで火災報および連動報のいずれか一方を親機２に通知する。そして、制御部１７２は、火災報と連動報との少なくとも一方からなる特定報については、準備状態において親機２から許可を受けると特定報を親機２に通知する。【選択図】図１