Fire alarm system, fire sensor, fire receiver, and

专利名称：Fire alarm system, fire sensor, fire receiver,

and repeater

发明人：Manabu Dohi,Masahiko Nemoto,Naoto

Yamano,Hiroshi Shima,Naoya Matsuoka

申请号：US10246616申请日：20020919公开号：US06960987B2公开日：20051101

专利附图：

摘要：Disclosed herein is a fire alarm system for connecting a plurality of fire sensorsto sensor lines, and giving an alarm in response to fire information output from the fire

sensor in a line unit. The fire alarm system includes a current modulation section and anaddress specification section. The current modulation section is used for maintaining acurrent flowing in the sensor line at a predetermined value for a predetermined time atthe time of a fire, and modulating the current in accordance with the inherent addressinformation of the fire sensor. The address specification section is used for sensing fireinformation by judging whether or not the current has been maintained at thepredetermined value for the predetermined time, and also for specifying the inherentaddress of the fire sensor that issued the fire information, from the modulated state ofthe current.

申请人：Manabu Dohi,Masahiko Nemoto,Naoto Yamano,Hiroshi Shima,NaoyaMatsuoka

地址：Kanagawa-ken JP,Kanagawa-ken JP,Kanagawa-ken JP,Kanagawa-ken JP,Tokyo JP

国籍：JP,JP,JP,JP,JP

代理机构：Blank Rome LLP

更多信息请下载全文后查看