EP 3349196 B1 20191204 - MASTER UNIT FOR AUTOMATIC FIRE ALARM SYSTEM AND AUTOMATIC FIRE ALARM SYSTEM
Title (en)
MASTER UNIT FOR AUTOMATIC FIRE ALARM SYSTEM AND AUTOMATIC FIRE ALARM SYSTEM
Title (de)
MASTER-EINHEIT FÜR AUTOMATISCHES BRANDMELDERSYSTEM UND AUTOMATISCHES BRANDMELDERSYSTEM
Title (fr)
UNITÉ MAÎTRESSE DE SYSTÈME D'ALARME D'INCENDIE AUTOMATIQUE ET SYSTÈME D'ALARME D'INCENDIE AUTOMATIQUE
Publication
Application
Priority
- JP 2015179637 A 20150911
- JP 2016003964 W 20160831
Abstract (en)
[origin: EP3349196A1] An object of the present invention is to provide an automatic fire alarm system master device and automatic fire alarm system that would reduce the chances of causing interference between response signals transmitted from a plurality of slave devices and also provide an automatic fire alarm system slave device configured to transmit a response signal to cause interference much less frequently. A master device (20) according to the present invention includes a transmitter (24), a transmission controller (274), a receiver (23), and a reception controller (273). The transmission controller (274) makes the transmitter (24) transmit a synch signal every time a predetermined amount of time passes. Sixteen slave devices (10) are connected to a pair of cables (51, 52). The slave devices (10) transmit their respective response signals after their respective waiting times, varying their length from one slave device (10) to another, have passed since reception of the synch signal. The reception controller (273) makes the receiver (23) receive the respective response signals from the slave devices (10) during their respective reception periods after their respective waiting times have passed since transmission of the synch signal by the transmitter (24). The predetermined amount of time is long enough to allow the response signals to fall within their respective reception periods.
IPC 8 full level
G08B 17/00 (2006.01); G08B 26/00 (2006.01)
CPC (source: EP)
G08B 26/005 (2013.01); G08B 17/00 (2013.01)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 3349196 A1 20180718; EP 3349196 A4 20180829; EP 3349196 B1 20191204; JP 2017054427 A 20170316; JP 6569981 B2 20190904; WO 2017043047 A1 20170316
DOCDB simple family (application)
EP 16843915 A 20160831; JP 2015179637 A 20150911; JP 2016003964 W 20160831