AU1649897A - Smoke detection system - Google Patents

Smoke detection system

Info

Publication number
AU1649897A
AU1649897A AU16498/97A AU1649897A AU1649897A AU 1649897 A AU1649897 A AU 1649897A AU 16498/97 A AU16498/97 A AU 16498/97A AU 1649897 A AU1649897 A AU 1649897A AU 1649897 A AU1649897 A AU 1649897A
Authority
AU
Australia
Prior art keywords
detection system
smoke detection
smoke
detection
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.)
Granted
Application number
AU16498/97A
Other versions
AU702874B2 (en
Inventor
Peter David Fox
Christopher Girling
Mark Symonds
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.)
Kidde Products Ltd
Original Assignee
Airsense Technology 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
Priority claimed from GB939315779A external-priority patent/GB9315779D0/en
Application filed by Airsense Technology Ltd filed Critical Airsense Technology Ltd
Priority to AU16498/97A priority Critical patent/AU702874B2/en
Publication of AU1649897A publication Critical patent/AU1649897A/en
Application granted granted Critical
Publication of AU702874B2 publication Critical patent/AU702874B2/en
Priority to AU33955/99A priority patent/AU745669B2/en
Assigned to Kidde Products Limited reassignment Kidde Products Limited Alteration of Name(s) in Register under S187 Assignors: AIRSENSE TECHNOLOGY LIMITED
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
    • G08B29/18—Prevention or correction of operating errors
    • G08B29/20—Calibration, including self-calibrating arrangements
    • G08B29/24—Self-calibration, e.g. compensating for environmental drift or ageing of components
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/47—Scattering, i.e. diffuse reflection
    • G01N21/49—Scattering, i.e. diffuse reflection within a body or fluid
    • G01N21/53—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
    • G01P5/10—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring thermal variables
    • G01P5/12—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring thermal variables using variation of resistance of a heated conductor
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2201/00—Features of devices classified in G01N21/00
    • G01N2201/06—Illumination; Optics
    • G01N2201/064—Stray light conditioning
    • G01N2201/0642—Light traps; baffles

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Business, Economics & Management (AREA)
  • Computer Security & Cryptography (AREA)
  • Emergency Management (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Biochemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
AU16498/97A 1993-07-30 1997-03-25 Smoke detection system Ceased AU702874B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU16498/97A AU702874B2 (en) 1993-07-30 1997-03-25 Smoke detection system
AU33955/99A AU745669B2 (en) 1993-07-30 1999-06-09 Smoke detection system

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB939315779A GB9315779D0 (en) 1993-07-30 1993-07-30 Apparatus and methods
GB9315779 1993-07-30
AU72694/94A AU689484C (en) 1993-07-30 1994-08-01 Smoke detection system
AU16498/97A AU702874B2 (en) 1993-07-30 1997-03-25 Smoke detection system

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
AU72694/94A Division AU689484C (en) 1993-07-30 1994-08-01 Smoke detection system

Related Child Applications (1)

Application Number Title Priority Date Filing Date
AU33955/99A Division AU745669B2 (en) 1993-07-30 1999-06-09 Smoke detection system

Publications (2)

Publication Number Publication Date
AU1649897A true AU1649897A (en) 1997-05-29
AU702874B2 AU702874B2 (en) 1999-03-11

Family

ID=25637114

Family Applications (1)

Application Number Title Priority Date Filing Date
AU16498/97A Ceased AU702874B2 (en) 1993-07-30 1997-03-25 Smoke detection system

Country Status (1)

Country Link
AU (1) AU702874B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114034880A (en) * 2021-11-22 2022-02-11 北京信息科技大学 Dynamic heat source type double-shaft micro-mechanical angular velocity sensor and processing method thereof

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4672365A (en) * 1986-06-06 1987-06-09 Emhart Industries, Inc. Security system with digital data filtering
EP0612403B1 (en) * 1991-11-14 1999-02-03 Artchem, Inc. Microtube and connector assembly

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114034880A (en) * 2021-11-22 2022-02-11 北京信息科技大学 Dynamic heat source type double-shaft micro-mechanical angular velocity sensor and processing method thereof

Also Published As

Publication number Publication date
AU702874B2 (en) 1999-03-11

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