GB1089757A - Improvements in or relating to fire detection, alarm, and fighting apparatus - Google Patents

Improvements in or relating to fire detection, alarm, and fighting apparatus

Info

Publication number
GB1089757A
GB1089757A GB34907/65A GB3490765A GB1089757A GB 1089757 A GB1089757 A GB 1089757A GB 34907/65 A GB34907/65 A GB 34907/65A GB 3490765 A GB3490765 A GB 3490765A GB 1089757 A GB1089757 A GB 1089757A
Authority
GB
United Kingdom
Prior art keywords
alarm
mirror
output
amplifier
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
Application number
GB34907/65A
Inventor
David Shaw Taylor
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.)
THRINGS ADVANCED DEVELOPMENTS Ltd
Original Assignee
THRINGS ADVANCED DEVELOPMENTS 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 THRINGS ADVANCED DEVELOPMENTS Ltd filed Critical THRINGS ADVANCED DEVELOPMENTS Ltd
Priority to GB34907/65A priority Critical patent/GB1089757A/en
Priority to US571228A priority patent/US3493953A/en
Publication of GB1089757A publication Critical patent/GB1089757A/en
Expired 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
    • G08B17/12—Actuation by presence of radiation or particles, e.g. of infrared radiation or of ions

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)

Abstract

1,089,757. Photo-electric fire alarms. THRINGS ADVANCED DEVELOPMENTS Ltd. Aug. 8, 1966 [Aug. 14, 1965], No. 34907/65. Heading G1A. In a fire alarm of the kind described in 1, 003, 075 and having a detector 12 with a filter 11 giving an electrical output in response to radiation in the 2-7 micron region and a rotating mirror 10 directing on to the detector in sequence radiation from sections of the space to be protected: the mirror is rotated at a slow speed, e.g. 1 revolution per 30 seconds, and the alarm circuitry includes an amplifier which receives the detector signal and is responsive to the flicker frequency of a flame, e.g. 1-30 cycles per second; an output from the amplifier stops the mirror and initiates an alarm if the output is still present after a predetermined delay. If a steady source of infrared radiation is sensed, e.g. an electric fire, the mirror stops only momentarily and no alarm is sounded due to the amplifier output ceasing long before the delay time is up. Such a repetitive stopping may be signalled to a control desk as may the momentarily stopping due to the sensing of a small steady source of infrared radiation 23, e.g. a heated resistor or dimly lit lamp, within the globe 15 which would indicate correct functioning of the apparatus.
GB34907/65A 1965-08-14 1965-08-14 Improvements in or relating to fire detection, alarm, and fighting apparatus Expired GB1089757A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB34907/65A GB1089757A (en) 1965-08-14 1965-08-14 Improvements in or relating to fire detection, alarm, and fighting apparatus
US571228A US3493953A (en) 1965-08-14 1966-08-09 Fire alarm with infra-red scanner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB34907/65A GB1089757A (en) 1965-08-14 1965-08-14 Improvements in or relating to fire detection, alarm, and fighting apparatus

Publications (1)

Publication Number Publication Date
GB1089757A true GB1089757A (en) 1967-11-08

Family

ID=10371384

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34907/65A Expired GB1089757A (en) 1965-08-14 1965-08-14 Improvements in or relating to fire detection, alarm, and fighting apparatus

Country Status (2)

Country Link
US (1) US3493953A (en)
GB (1) GB1089757A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2519078A1 (en) * 1981-12-30 1983-07-01 Rolls Royce DEVICE FOR DETECTING IRREGULARITIES IN THE POWER SUPPLY OF TURBOMACHINE ENGINES

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3631434A (en) * 1969-10-08 1971-12-28 Barnes Eng Co Passive intrusion detector
US4027159A (en) * 1971-10-20 1977-05-31 The United States Of America As Represented By The Secretary Of The Navy Combined use of visible and near-IR imaging systems with far-IR detector system
US3766539A (en) * 1972-05-01 1973-10-16 Us Army Automatic personnel intrusion alarm
GB1597821A (en) * 1975-06-18 1981-09-09 Secr Defence Scanning radiationsource detectors
FR2541484B1 (en) * 1983-01-13 1986-06-13 Brown De Colstoun Francois METHOD FOR THE DETECTION OF A SOURCE OF HEAT IN PARTICULAR OF A FOREST FIRE IN A MONITORED AREA, AND SYSTEM FOR CARRYING OUT SAID METHOD
FR2598238A1 (en) * 1986-05-05 1987-11-06 Latecoere Ste Indle Aviat Method and device for detecting fires
EP0298182A1 (en) * 1987-05-06 1989-01-11 Societe Industrielle D'aviation Latecoere Fire detection method and device
US4849737A (en) * 1986-11-26 1989-07-18 Matsushita Electric Works, Ltd. Person-number detecting system
USRE39081E1 (en) * 1993-11-30 2006-05-02 Alan E. Thomas Localized automatic fire extinguishing apparatus
US5548276A (en) * 1993-11-30 1996-08-20 Alan E. Thomas Localized automatic fire extinguishing apparatus
US9162095B2 (en) 2011-03-09 2015-10-20 Alan E. Thomas Temperature-based fire detection
CN107583223A (en) * 2017-08-31 2018-01-16 马丽 A kind of starter of dynamic scan fire condition

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1959702A (en) * 1930-04-22 1934-05-22 George A Barker Apparatus for detecting forest fires
US2177493A (en) * 1936-05-28 1939-10-24 Elmon C Gillette Fire detecting apparatus
US3010102A (en) * 1947-07-05 1961-11-21 Bell Telephone Labor Inc Combination radar and thermalenergy detection system
US2811711A (en) * 1951-05-19 1957-10-29 Electronics Corp America Fire method and apparatus
US3350562A (en) * 1964-10-02 1967-10-31 North American Aviation Inc Infrared radiometer having a black body reference surface and a spherical chopper

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2519078A1 (en) * 1981-12-30 1983-07-01 Rolls Royce DEVICE FOR DETECTING IRREGULARITIES IN THE POWER SUPPLY OF TURBOMACHINE ENGINES
US4505150A (en) * 1981-12-30 1985-03-19 Rolls-Royce Limited Sensing surges in gas turbine engines

Also Published As

Publication number Publication date
US3493953A (en) 1970-02-03

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