JPS5540968A - Sensor - Google Patents

Sensor

Info

Publication number
JPS5540968A
JPS5540968A JP11433578A JP11433578A JPS5540968A JP S5540968 A JPS5540968 A JP S5540968A JP 11433578 A JP11433578 A JP 11433578A JP 11433578 A JP11433578 A JP 11433578A JP S5540968 A JPS5540968 A JP S5540968A
Authority
JP
Japan
Prior art keywords
light
smoke
metal piece
detection element
sensing
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
JP11433578A
Other languages
Japanese (ja)
Inventor
Kenpo Oe
Katsuyuki Ide
Yasunobu Koshimura
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 Electric Equipment Corp
Original Assignee
Toshiba Electric Equipment Corp
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 Toshiba Electric Equipment Corp filed Critical Toshiba Electric Equipment Corp
Priority to JP11433578A priority Critical patent/JPS5540968A/en
Publication of JPS5540968A publication Critical patent/JPS5540968A/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
    • 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
    • G08B17/11—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using an ionisation chamber for detecting smoke or gas
    • G08B17/113—Constructional details

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 establish the sensing unit enabling to perform stable sensing operation test, by setting the position relation of the simulated scattering body to optical system block to always optimum state. CONSTITUTION:When the test push button is not depressed, the rotary shaft 16 is turned counterclockwise with the deflection force of the spring 20 to position the metal piece 17 between the light emitting element 13 and the shield light wall 15. Accordingly, with this condition, the effect of the metal piece 17 to the photo detection element 14 is avoided, and only to the smoke from the smoke inlet, the scattering of light transmitting in the smoke is detected with the photo detection element 14 and smoke sensing is made. Further, when the push button 19 is operated, if the drive piece 18 is depressed, the turn shaft 16 is turned clockwise to move the metal piece 17 on the light shield wall 15. Thus, the light from the light emitting element 13 reflects on the metal piece 17, this reflection light is detected at the photo detection element 14 to test the smoke sensing.
JP11433578A 1978-09-18 1978-09-18 Sensor Pending JPS5540968A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11433578A JPS5540968A (en) 1978-09-18 1978-09-18 Sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11433578A JPS5540968A (en) 1978-09-18 1978-09-18 Sensor

Publications (1)

Publication Number Publication Date
JPS5540968A true JPS5540968A (en) 1980-03-22

Family

ID=14635210

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11433578A Pending JPS5540968A (en) 1978-09-18 1978-09-18 Sensor

Country Status (1)

Country Link
JP (1) JPS5540968A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006140108A (en) * 2004-11-15 2006-06-01 Asahi Matsushita Electric Works Ltd Luminaire
JP2006323577A (en) * 2005-05-18 2006-11-30 Daiken Trade & Ind Co Ltd Alarm-installation structure
DE202009013001U1 (en) 2009-09-28 2009-12-24 Job Lizenz Gmbh & Co. Kg alarm Devices

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006140108A (en) * 2004-11-15 2006-06-01 Asahi Matsushita Electric Works Ltd Luminaire
JP2006323577A (en) * 2005-05-18 2006-11-30 Daiken Trade & Ind Co Ltd Alarm-installation structure
DE202009013001U1 (en) 2009-09-28 2009-12-24 Job Lizenz Gmbh & Co. Kg alarm Devices

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