JPS61160589U - - Google Patents

Info

Publication number
JPS61160589U
JPS61160589U JP4394385U JP4394385U JPS61160589U JP S61160589 U JPS61160589 U JP S61160589U JP 4394385 U JP4394385 U JP 4394385U JP 4394385 U JP4394385 U JP 4394385U JP S61160589 U JPS61160589 U JP S61160589U
Authority
JP
Japan
Prior art keywords
fire
output
comparator
determining
dirt
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.)
Granted
Application number
JP4394385U
Other languages
English (en)
Other versions
JPH044312Y2 (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 JP1985043943U priority Critical patent/JPH044312Y2/ja
Publication of JPS61160589U publication Critical patent/JPS61160589U/ja
Application granted granted Critical
Publication of JPH044312Y2 publication Critical patent/JPH044312Y2/ja
Expired legal-status Critical Current

Links

Landscapes

  • Fire-Detection Mechanisms (AREA)
  • Fire Alarms (AREA)

Description

【図面の簡単な説明】
第1図はこの考案の火災報知機の一実施例の回
路図、第2図は火災センサの出力波形図である。 S……火災センサ、RE……受信機、IC1,
IC5……比較器、IC3……スイツチング回路
、IC7……NAND回路、IC8……タイマ回
路。

Claims (1)

    【実用新案登録請求の範囲】
  1. 火災によつて生ずる熱、煙、ガスあるいは光な
    どの現象を火災センサで検出して電気的なアナロ
    グ量に変換しそのアナログ出力を中継器あるいは
    受信機で検出し火災を報知するようにした火災報
    知機において、上記中継器あるいは受信機に、火
    災センサからのアナログ出力を火災と判別する比
    較器と、火災センサの汚れによるアナログ出力と
    判別する比較器と、火災警報用のスイツチング回
    路と、上記汚れ判別用の比較器の出力状態を時間
    的に判別するタイマ回路とを設け、上記スイツチ
    ング回路が上記両比較器のand出力でセツトさ
    れ、また上記タイマ回路が汚れ判別用の比較器の
    出力でセツトされ上記スイツチング回路の出力で
    リセツトされることを特徴とする火災報知機。
JP1985043943U 1985-03-28 1985-03-28 Expired JPH044312Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1985043943U JPH044312Y2 (ja) 1985-03-28 1985-03-28

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1985043943U JPH044312Y2 (ja) 1985-03-28 1985-03-28

Publications (2)

Publication Number Publication Date
JPS61160589U true JPS61160589U (ja) 1986-10-04
JPH044312Y2 JPH044312Y2 (ja) 1992-02-07

Family

ID=30556077

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1985043943U Expired JPH044312Y2 (ja) 1985-03-28 1985-03-28

Country Status (1)

Country Link
JP (1) JPH044312Y2 (ja)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61143292U (ja) * 1985-02-26 1986-09-04

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61143292U (ja) * 1985-02-26 1986-09-04

Also Published As

Publication number Publication date
JPH044312Y2 (ja) 1992-02-07

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