EP0254813A3 - 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 Download PDF

Info

Publication number
EP0254813A3
EP0254813A3 EP87105734A EP87105734A EP0254813A3 EP 0254813 A3 EP0254813 A3 EP 0254813A3 EP 87105734 A EP87105734 A EP 87105734A EP 87105734 A EP87105734 A EP 87105734A EP 0254813 A3 EP0254813 A3 EP 0254813A3
Authority
EP
European Patent Office
Prior art keywords
arrangement
passive infrared
radiation
background
analysis
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
EP87105734A
Other languages
German (de)
Other versions
EP0254813B1 (en
EP0254813A2 (en
Inventor
Joachim Willie
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.)
Fritz Fuss GmbH and Co
Original Assignee
Fritz Fuss GmbH and 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 Fritz Fuss GmbH and Co filed Critical Fritz Fuss GmbH and Co
Priority to AT87105734T priority Critical patent/ATE65854T1/en
Publication of EP0254813A2 publication Critical patent/EP0254813A2/en
Publication of EP0254813A3 publication Critical patent/EP0254813A3/en
Application granted granted Critical
Publication of EP0254813B1 publication Critical patent/EP0254813B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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

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>
EP87105734A 1986-07-17 1987-04-16 Detection method for a passive infrared motion detector and arrangement for carrying out the method Expired - Lifetime EP0254813B1 (en)

Priority Applications (1)

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

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3624195 1986-07-17
DE19863624195 DE3624195A1 (en) 1986-07-17 1986-07-17 DETECTION PROCESS FOR A PASSIVE INFRARED MOTION DETECTOR AND ARRANGEMENT FOR PERFORMING THE PROCEDURE

Publications (3)

Publication Number Publication Date
EP0254813A2 EP0254813A2 (en) 1988-02-03
EP0254813A3 true EP0254813A3 (en) 1988-09-28
EP0254813B1 EP0254813B1 (en) 1991-07-31

Family

ID=6305404

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87105734A Expired - Lifetime EP0254813B1 (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
KR101701729B1 (en) 2010-03-18 2017-02-22 코닌클리케 필립스 엔.브이. Method and apparatus for increasing dimming range of solid state lighting fixtures

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0107042A1 (en) * 1982-10-01 1984-05-02 Cerberus Ag Infrared detector for spotting an intruder in an area

Family Cites Families (3)

* 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
JPS59195179A (en) * 1983-04-20 1984-11-06 Uro Denshi Kogyo Kk Alarming device for intruder

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0107042A1 (en) * 1982-10-01 1984-05-02 Cerberus Ag Infrared detector for spotting an intruder in an area

Also Published As

Publication number Publication date
DE3771798D1 (en) 1991-09-05
DE3624195A1 (en) 1988-01-21
DE3624195C2 (en) 1989-03-23
ATE65854T1 (en) 1991-08-15
EP0254813B1 (en) 1991-07-31
EP0254813A2 (en) 1988-02-03

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