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JPH0217836B2 - - Google Patents

Info

Publication number
JPH0217836B2
JPH0217836B2 JP58046682A JP4668283A JPH0217836B2 JP H0217836 B2 JPH0217836 B2 JP H0217836B2 JP 58046682 A JP58046682 A JP 58046682A JP 4668283 A JP4668283 A JP 4668283A JP H0217836 B2 JPH0217836 B2 JP H0217836B2
Authority
JP
Japan
Prior art keywords
smoke
fire
value
comparator
detector
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.)
Expired - Lifetime
Application number
JP58046682A
Other languages
English (en)
Japanese (ja)
Other versions
JPS59172093A (ja
Inventor
Nobuo Takahashi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 by Individual filed Critical Individual
Priority to JP4668283A priority Critical patent/JPS59172093A/ja
Publication of JPS59172093A publication Critical patent/JPS59172093A/ja
Publication of JPH0217836B2 publication Critical patent/JPH0217836B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Fire Alarms (AREA)
JP4668283A 1983-03-21 1983-03-21 火災などの異常警報装置 Granted JPS59172093A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4668283A JPS59172093A (ja) 1983-03-21 1983-03-21 火災などの異常警報装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4668283A JPS59172093A (ja) 1983-03-21 1983-03-21 火災などの異常警報装置

Publications (2)

Publication Number Publication Date
JPS59172093A JPS59172093A (ja) 1984-09-28
JPH0217836B2 true JPH0217836B2 (sv) 1990-04-23

Family

ID=12754146

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4668283A Granted JPS59172093A (ja) 1983-03-21 1983-03-21 火災などの異常警報装置

Country Status (1)

Country Link
JP (1) JPS59172093A (sv)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6115300A (ja) * 1984-06-29 1986-01-23 ホーチキ株式会社 火災警報装置
JPS61237195A (ja) * 1985-04-12 1986-10-22 ホーチキ株式会社 火災報知装置
JP2925550B2 (ja) * 1988-05-27 1999-07-28 能美防災株式会社 火災状態の検出装置
WO1990004241A1 (en) * 1988-10-13 1990-04-19 Nohmi Bosai Kabushiki Kaisha Fire alarm apparatus
DE68926958T2 (de) * 1988-12-02 1997-04-03 Nohmi Bosai Ltd Feueralarmsystem
US5483222A (en) * 1993-11-15 1996-01-09 Pittway Corporation Multiple sensor apparatus and method
US5627515A (en) * 1995-02-24 1997-05-06 Pittway Corporation Alarm system with multiple cooperating sensors

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5530794A (en) * 1978-05-01 1980-03-04 Anglo Amer Corp South Africa Method and apparatus for detecting ratio of signal variation
JPS5597690A (en) * 1978-09-15 1980-07-25 Anglo Amer Corp South Africa Alarm device and method of processing analog output signal from sensor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5530794A (en) * 1978-05-01 1980-03-04 Anglo Amer Corp South Africa Method and apparatus for detecting ratio of signal variation
JPS5597690A (en) * 1978-09-15 1980-07-25 Anglo Amer Corp South Africa Alarm device and method of processing analog output signal from sensor

Also Published As

Publication number Publication date
JPS59172093A (ja) 1984-09-28

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