ATE65854T1 - DETECTION METHOD FOR A PASSIVE INFRARED MOTION DETECTOR AND ARRANGEMENT FOR CARRYING OUT THE METHOD. - Google Patents

DETECTION METHOD FOR A PASSIVE INFRARED MOTION DETECTOR AND ARRANGEMENT FOR CARRYING OUT THE METHOD.

Info

Publication number
ATE65854T1
ATE65854T1 AT87105734T AT87105734T ATE65854T1 AT E65854 T1 ATE65854 T1 AT E65854T1 AT 87105734 T AT87105734 T AT 87105734T AT 87105734 T AT87105734 T AT 87105734T AT E65854 T1 ATE65854 T1 AT E65854T1
Authority
AT
Austria
Prior art keywords
arrangement
passive infrared
radiation
background
analysis
Prior art date
Application number
AT87105734T
Other languages
German (de)
Inventor
Joachim Willie
Original Assignee
Fuss Fritz Gmbh & Co
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 Fuss Fritz Gmbh & Co filed Critical Fuss Fritz Gmbh & Co
Application granted granted Critical
Publication of ATE65854T1 publication Critical patent/ATE65854T1/en

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
    • G08B13/189—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems
    • G08B13/19—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using infrared-radiation detection systems
    • G08B13/191—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using infrared-radiation detection systems using pyroelectric sensor means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Burglar Alarm Systems (AREA)

Abstract

A method of analysis for recognising objects remaining within the detection area of a passive infrared movement alarm and an arrangement for implementing the method are described. In accordance with the invention, the non-uniformity of the measurement background, which depends on physical factors such as absorption, reflection, specific thermal conductivity or varying influence of foreign radiation, is used for the analysis. With a variation in the background radiation field occurring below a lowest specified signal frequency, a background field correction is carried out which adjusts the particular reference value to match the change in the measurement background field. To make the correction, the difference between the current output signal of the radiation detector and an appropriately delayed output signal is taken via a signal amplitude-dependent time- varying reference-level correction circuit to a comparator which controls a timing element and a memory device. <IMAGE>
AT87105734T 1986-07-17 1987-04-16 DETECTION METHOD FOR A PASSIVE INFRARED MOTION DETECTOR AND ARRANGEMENT FOR CARRYING OUT THE METHOD. ATE65854T1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863624195 DE3624195A1 (en) 1986-07-17 1986-07-17 DETECTION PROCESS FOR A PASSIVE INFRARED MOTION DETECTOR AND ARRANGEMENT FOR PERFORMING THE PROCEDURE
EP87105734A EP0254813B1 (en) 1986-07-17 1987-04-16 Detection method for a passive infrared motion detector and arrangement for carrying out the method

Publications (1)

Publication Number Publication Date
ATE65854T1 true ATE65854T1 (en) 1991-08-15

Family

ID=6305404

Family Applications (1)

Application Number Title Priority Date Filing Date
AT87105734T ATE65854T1 (en) 1986-07-17 1987-04-16 DETECTION METHOD FOR A PASSIVE INFRARED MOTION DETECTOR AND ARRANGEMENT FOR CARRYING OUT THE METHOD.

Country Status (3)

Country Link
EP (1) EP0254813B1 (en)
AT (1) ATE65854T1 (en)
DE (2) DE3624195A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19520891A1 (en) * 1995-06-08 1996-12-12 Abb Patent Gmbh Arrangement with emissivity structure in the infrared range
DE102004053821B4 (en) 2004-11-04 2008-12-18 Dorma Gmbh + Co. Kg Door system with automatically movable wings and a method for operating such door systems
WO2011114250A1 (en) 2010-03-18 2011-09-22 Koninklijke Philips Electronics N.V. Method and apparatus for increasing dimming range of solid state lighting fixtures

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH599642A5 (en) * 1976-11-15 1978-05-31 Cerberus Ag
DE3128256A1 (en) * 1981-07-17 1983-02-03 Richard Hirschmann Radiotechnisches Werk, 7300 Esslingen MOTION DETECTORS FOR SPACE MONITORING
DE3369019D1 (en) * 1982-10-01 1987-02-12 Cerberus Ag Infrared detector for spotting an intruder in an area
JPS59195179A (en) * 1983-04-20 1984-11-06 Uro Denshi Kogyo Kk Alarming device for intruder

Also Published As

Publication number Publication date
DE3771798D1 (en) 1991-09-05
EP0254813A2 (en) 1988-02-03
EP0254813B1 (en) 1991-07-31
DE3624195C2 (en) 1989-03-23
EP0254813A3 (en) 1988-09-28
DE3624195A1 (en) 1988-01-21

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Legal Events

Date Code Title Description
REN Ceased due to non-payment of the annual fee