JPS6174187U - - Google Patents

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Publication number
JPS6174187U
JPS6174187U JP15622084U JP15622084U JPS6174187U JP S6174187 U JPS6174187 U JP S6174187U JP 15622084 U JP15622084 U JP 15622084U JP 15622084 U JP15622084 U JP 15622084U JP S6174187 U JPS6174187 U JP S6174187U
Authority
JP
Japan
Prior art keywords
line
power supply
current
current detection
signal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP15622084U
Other languages
Japanese (ja)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP15622084U priority Critical patent/JPS6174187U/ja
Publication of JPS6174187U publication Critical patent/JPS6174187U/ja
Pending legal-status Critical Current

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  • Fire Alarms (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案の一実施例を示した回路図、第
２図は本考案の全体構成を示したブロツク図であ
る。 １：受信機、２ａ，２ｂ，…２ｎ，３ａ，３ｂ
，…３ｎ：中継器、４ａ，４ｂ，…４ｎ：火災感
知器、Ｌ１：第１の電源線、Ｌ２：第１のアース
線、Ｌ３：第２のアース線、Ｌ４：第２の電源線
、６：電流制限回路、７：電流検出部、８：検出
回路、９：制御部、１０：警報部、１１：電圧検
出手段、１２：スイツチング手段、１３：リレー
、Ｐ１，Ｐ２…Ｐ８：端子、ＺＤ：ツエナダイオ
ード。 FIG. 1 is a circuit diagram showing an embodiment of the present invention, and FIG. 2 is a block diagram showing the overall configuration of the present invention. 1: Receiver, 2a, 2b,...2n, 3a, 3b
,...3n: Repeater, 4a, 4b,...4n: Fire detector, L1: First power line, L2: First ground line, L3: Second ground line, L4: Second power line, 6: Current limiting circuit, 7: Current detection section, 8: Detection circuit, 9: Control section, 10: Alarm section, 11: Voltage detection means, 12: Switching means, 13: Relay, P1, P2...P8: Terminal, ZD: Zena diode.

Claims (1)

【実用新案登録請求の範囲】 受信機から引き出された第１の電源線及び電流
検出部に連なる第１のアース線でなる一対の電源
兼用信号線と、第２の電源線及び第２のアース線
でなる一対の電源線のそれぞれを複数の中継器に
接続し、各中継器のそれぞれは、自己に接続され
た複数の火災感知器からの火災信号をとりまとめ
て電流モードにより前記一対の電源兼用信号線を
介して前記電流検出部に返送し、該電流検出部か
らの信号に基づいて情報内容を警報表示する火災
警報装置において、 前記受信機に、前記第１の電源線を流れる線路
電流を所定電流以下に制限する電流制限回路と、
前記第１及び第２のアース線の線間電圧を検出す
る電圧検出手段と、該電圧検出手段からの信号出
力に応じてスイツチング動作し、前記第１のアー
ス線を電流検出部から切り離し、該電流検出部か
らの信号線と第１の電源線を短絡接続するスイツ
チング手段とを設けたことを特徴とする火災警報
装置。[Claims for Utility Model Registration] A pair of power supply/signal lines consisting of a first power line drawn out from the receiver and a first ground line connected to the current detection unit, and a second power line and a second ground line. Each of a pair of power supply lines consisting of a wire is connected to a plurality of repeaters, and each repeater compiles fire signals from a plurality of fire detectors connected to itself and doubles as a power supply for the pair in current mode. In a fire alarm device that sends information back to the current detection unit via a signal line and displays information contents as an alarm based on the signal from the current detection unit, the line current flowing through the first power supply line is sent to the receiver. a current limiting circuit that limits the current to a predetermined value or less;
voltage detection means for detecting the line voltage between the first and second ground wires; and a switching operation according to a signal output from the voltage detection means to disconnect the first ground wire from the current detection section; A fire alarm device comprising switching means for short-circuiting a signal line from a current detection section and a first power supply line.
JP15622084U 1984-10-16 1984-10-16 Pending JPS6174187U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15622084U JPS6174187U (en) 1984-10-16 1984-10-16

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15622084U JPS6174187U (en) 1984-10-16 1984-10-16

Publications (1)

Publication Number Publication Date
JPS6174187U true JPS6174187U (en) 1986-05-20

Family

ID=30714229

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15622084U Pending JPS6174187U (en) 1984-10-16 1984-10-16

Country Status (1)

Country Link
JP (1) JPS6174187U (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4970596A (en) * 1972-07-17 1974-07-08
JPS5592997A (en) * 1978-12-29 1980-07-14 Matsushita Electric Works Ltd Abnormality detector
JPS5851388B2 (en) * 1977-01-19 1983-11-16 武美 小坂 Manufacturing method of cylindrical separator

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4970596A (en) * 1972-07-17 1974-07-08
JPS5851388B2 (en) * 1977-01-19 1983-11-16 武美 小坂 Manufacturing method of cylindrical separator
JPS5592997A (en) * 1978-12-29 1980-07-14 Matsushita Electric Works Ltd Abnormality detector

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