JPS54158900A - Fire alarm system - Google Patents

Fire alarm system

Info

Publication number
JPS54158900A
JPS54158900A JP6754178A JP6754178A JPS54158900A JP S54158900 A JPS54158900 A JP S54158900A JP 6754178 A JP6754178 A JP 6754178A JP 6754178 A JP6754178 A JP 6754178A JP S54158900 A JPS54158900 A JP S54158900A
Authority
JP
Japan
Prior art keywords
detector
detectors
signals
receiver
stand
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
JP6754178A
Other languages
Japanese (ja)
Inventor
Kazuhiko Kuboo
Shuntaro Aoki
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.)
Omron Corp
Original Assignee
Omron Tateisi Electronics Co
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 Omron Tateisi Electronics Co filed Critical Omron Tateisi Electronics Co
Priority to JP6754178A priority Critical patent/JPS54158900A/en
Publication of JPS54158900A publication Critical patent/JPS54158900A/en
Pending legal-status Critical Current

Links

Landscapes

  • Alarm Systems (AREA)
  • Fire Alarms (AREA)

Abstract

PURPOSE: To prevent malfunction and also to reduce power consumption by providing more than two constantly-supervisory and stand-by fire detectors in the same precaution areas and by driving a receiver responding only to the logical sum among signals from those detectors.
CONSTITUTION: In the same precaution area, superviosry detector 5 available for constant operation and stand-by detector 8 applied with a voltage via switching circuit 9 are both provided and the receiver is driven responding only to the logical sum between signals from detectors 5 and 8. If a fire occurs, switching circuit 9 turns ON through the operation of detector 5 and detector 8 starts operating. Logic circuit 12 operates by signals from the both, thereby sending an alarm signal to the receiver. Only detector 5 among detectors consumes power constantly, so that the whole power consumption can be reduced. In addition, even if detector 5 would malfunction due to momentary power variation, detector 8 is never influenced by power variation at the same time, so that an alarm signal will never be generated by mistake.
COPYRIGHT: (C)1979,JPO&Japio
JP6754178A 1978-06-05 1978-06-05 Fire alarm system Pending JPS54158900A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6754178A JPS54158900A (en) 1978-06-05 1978-06-05 Fire alarm system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6754178A JPS54158900A (en) 1978-06-05 1978-06-05 Fire alarm system

Publications (1)

Publication Number Publication Date
JPS54158900A true JPS54158900A (en) 1979-12-15

Family

ID=13347926

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6754178A Pending JPS54158900A (en) 1978-06-05 1978-06-05 Fire alarm system

Country Status (1)

Country Link
JP (1) JPS54158900A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015118421A (en) * 2013-12-17 2015-06-25 ホーチキ株式会社 Fire alarm facility

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015118421A (en) * 2013-12-17 2015-06-25 ホーチキ株式会社 Fire alarm facility

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