EP0901113A3 - Insect repulsion - Google Patents

Insect repulsion Download PDF

Info

Publication number
EP0901113A3
EP0901113A3 EP98306527A EP98306527A EP0901113A3 EP 0901113 A3 EP0901113 A3 EP 0901113A3 EP 98306527 A EP98306527 A EP 98306527A EP 98306527 A EP98306527 A EP 98306527A EP 0901113 A3 EP0901113 A3 EP 0901113A3
Authority
EP
European Patent Office
Prior art keywords
sounders
smoke
emit
transducers
heat
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.)
Withdrawn
Application number
EP98306527A
Other languages
German (de)
French (fr)
Other versions
EP0901113A2 (en
Inventor
Manhar Amlani
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0901113A2 publication Critical patent/EP0901113A2/en
Publication of EP0901113A3 publication Critical patent/EP0901113A3/en
Withdrawn legal-status Critical Current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
    • G08B29/185—Signal analysis techniques for reducing or preventing false alarms or for enhancing the reliability of the system
    • 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

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Fire Alarms (AREA)

Abstract

A fire alarm system comprising a plurality of remote alarm transducers 11, each incorporating a smoke and/or heat sensor 20 and a sounder 22. The sounders 22 emit a high frequency sound that deters insects from entering the transducers 11 and from causing false alarms or faults. In a preferred embodiment, the sounders 22 are also arranged to emit an alarm signal in the event that smoke or heat is detected.
EP98306527A 1997-09-03 1998-08-17 Insect repulsion Withdrawn EP0901113A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9718547 1997-09-03
GBGB9718547.4A GB9718547D0 (en) 1997-09-03 1997-09-03 Smoke detector

Publications (2)

Publication Number Publication Date
EP0901113A2 EP0901113A2 (en) 1999-03-10
EP0901113A3 true EP0901113A3 (en) 1999-12-29

Family

ID=10818371

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98306527A Withdrawn EP0901113A3 (en) 1997-09-03 1998-08-17 Insect repulsion

Country Status (2)

Country Link
EP (1) EP0901113A3 (en)
GB (1) GB9718547D0 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE507544T1 (en) * 2008-02-19 2011-05-15 Siemens Ag SMOKE DETECTION USING TWO SPECTRALLY DIFFERENT SCATTERED LIGHT MEASUREMENTS

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3891962A (en) * 1971-10-07 1975-06-24 Tritronics 1971 Ltd Electronic insect controller
GB2218552A (en) * 1988-04-09 1989-11-15 Lawrence Vivian Penheiro Electric light installation
US5189393A (en) * 1991-06-07 1993-02-23 The Watt Stopper Inc. Dual technology motion sensor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3891962A (en) * 1971-10-07 1975-06-24 Tritronics 1971 Ltd Electronic insect controller
GB2218552A (en) * 1988-04-09 1989-11-15 Lawrence Vivian Penheiro Electric light installation
US5189393A (en) * 1991-06-07 1993-02-23 The Watt Stopper Inc. Dual technology motion sensor

Also Published As

Publication number Publication date
GB9718547D0 (en) 1997-11-05
EP0901113A2 (en) 1999-03-10

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