JPS5411781A - Smoke detector - Google Patents

Smoke detector

Info

Publication number
JPS5411781A
JPS5411781A JP7686977A JP7686977A JPS5411781A JP S5411781 A JPS5411781 A JP S5411781A JP 7686977 A JP7686977 A JP 7686977A JP 7686977 A JP7686977 A JP 7686977A JP S5411781 A JPS5411781 A JP S5411781A
Authority
JP
Japan
Prior art keywords
smoke detector
signals
circuit
produciing
sure
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
JP7686977A
Other languages
Japanese (ja)
Inventor
Fujinori Kimura
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.)
Toshiba TEC Corp
Original Assignee
Tokyo Electric Co Ltd
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 Tokyo Electric Co Ltd filed Critical Tokyo Electric Co Ltd
Priority to JP7686977A priority Critical patent/JPS5411781A/en
Publication of JPS5411781A publication Critical patent/JPS5411781A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • G08B17/103—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using a light emitting and receiving device
    • G08B17/107—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using a light emitting and receiving device for detecting light-scattering due to smoke

Landscapes

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Fire-Detection Mechanisms (AREA)

Abstract

PURPOSE:To make possible simple, sure, safe and highly reliable operation by generating plural times of signals from a sampling circuit during supervising time, and produciing an output from a discriminating circuit with these signals only when detected with a detecting circuit.
JP7686977A 1977-06-28 1977-06-28 Smoke detector Pending JPS5411781A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7686977A JPS5411781A (en) 1977-06-28 1977-06-28 Smoke detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7686977A JPS5411781A (en) 1977-06-28 1977-06-28 Smoke detector

Publications (1)

Publication Number Publication Date
JPS5411781A true JPS5411781A (en) 1979-01-29

Family

ID=13617640

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7686977A Pending JPS5411781A (en) 1977-06-28 1977-06-28 Smoke detector

Country Status (1)

Country Link
JP (1) JPS5411781A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5036326A (en) * 1973-08-03 1975-04-05

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5036326A (en) * 1973-08-03 1975-04-05
JPS5624718B2 (en) * 1973-08-03 1981-06-08

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