EP0107425A3 - Radiation pattern change detection - Google Patents

Radiation pattern change detection Download PDF

Info

Publication number
EP0107425A3
EP0107425A3 EP83306065A EP83306065A EP0107425A3 EP 0107425 A3 EP0107425 A3 EP 0107425A3 EP 83306065 A EP83306065 A EP 83306065A EP 83306065 A EP83306065 A EP 83306065A EP 0107425 A3 EP0107425 A3 EP 0107425A3
Authority
EP
European Patent Office
Prior art keywords
radiation
change
pattern
sensing means
consequent
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Withdrawn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
EP83306065A
Other languages
German (de)
French (fr)
Other versions
EP0107425A2 (en
Inventor
Derek Oscar Walter
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.)
Johnson Matthey PLC
Original Assignee
Johnson Matthey PLC
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 Johnson Matthey PLC filed Critical Johnson Matthey PLC
Publication of EP0107425A2 publication Critical patent/EP0107425A2/en
Publication of EP0107425A3 publication Critical patent/EP0107425A3/en
Withdrawn legal-status Critical Current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
    • G08B13/194—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 image scanning and comparing systems
    • G08B13/196—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 image scanning and comparing systems using television cameras
    • G08B13/19602—Image analysis to detect motion of the intruder, e.g. by frame subtraction
    • 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
    • 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
    • G08B13/194—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 image scanning and comparing systems
    • G08B13/196—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 image scanning and comparing systems using television cameras
    • G08B13/19634—Electrical details of the system, e.g. component blocks for carrying out specific functions

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Burglar Alarm Systems (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)

Abstract

This invention relates to the detection of a change in a pattern of radiation and is concerned especially with the detection of such a change as a result of the movement of an object and/or its shadow and/or an image of an object, such as, for example, a television picture thereof. The term «radiation» is used to include ultra-violet radiation, visible light and infrared radiation.
In more detail there is provided an apparatus for detecting a change in a pattern of radiation incident on the apparatus, comprising lens means, a first sensing means sensitive to said incident radiation and adapted to give a first outpout signal characteristic of said pattern and a second such sensing means, adapted to give a cecond such output signal, said sensing means having different configurations and/or orientations of radiation-­ sensitive areas and said lens means together with said sensing means constituting an optical system, are arranged for incidence on said sensing means through said lens means of said radiation, and connected to comparator means in such a way that the latter receives said output signals, the arrangement being such that any change in said pattern of radiation causes a first consequent change in said first output signal and a second consequent change being different from said first consequent change by virtue of said different configurations and/or orientations of radi­ ation-sensitive areas, and said comparator means being ar­ ranged to supply a signal which is a function of the said differing output signals and hence indicative of a change in said pattern of radiation.
EP83306065A 1982-10-21 1983-10-06 Radiation pattern change detection Withdrawn EP0107425A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8230062 1982-10-21
GB8230062 1982-10-21

Publications (2)

Publication Number Publication Date
EP0107425A2 EP0107425A2 (en) 1984-05-02
EP0107425A3 true EP0107425A3 (en) 1984-11-14

Family

ID=10533745

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83306065A Withdrawn EP0107425A3 (en) 1982-10-21 1983-10-06 Radiation pattern change detection

Country Status (2)

Country Link
EP (1) EP0107425A3 (en)
JP (1) JPS5999278A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7354574B2 (en) 2002-11-07 2008-04-08 Advanced Ocular Systems Limited Treatment of ocular disease
US20110303832A1 (en) * 2010-06-14 2011-12-15 Sony Ericsson Mobile Communications Ab Spatial Detection on an Electronic Device Using Optical Coding
JP6182323B2 (en) * 2013-02-12 2017-08-16 株式会社メガチップス Sensor device and sensor application equipment
CN107886666A (en) * 2017-12-14 2018-04-06 太仓鼎诚电子科技有限公司 A kind of intelligent Wireless Alarm System
CN110197563A (en) * 2018-02-27 2019-09-03 河北金锁安防工程股份有限公司 Three-dimensional auto sleep type anti-theft system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3928843A (en) * 1974-06-24 1975-12-23 Optical Coating Laboratory Inc Dual channel infrared intrusion alarm system
GB1551541A (en) * 1977-09-13 1979-08-30 Bloice J A Infrared intrusion detector system
DE2820304A1 (en) * 1978-05-10 1979-11-22 Joachim Kuhbier IR detector system - has detectors facing each other, with memory stages to ensure that false signals are avoided

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3928843A (en) * 1974-06-24 1975-12-23 Optical Coating Laboratory Inc Dual channel infrared intrusion alarm system
GB1551541A (en) * 1977-09-13 1979-08-30 Bloice J A Infrared intrusion detector system
DE2820304A1 (en) * 1978-05-10 1979-11-22 Joachim Kuhbier IR detector system - has detectors facing each other, with memory stages to ensure that false signals are avoided

Also Published As

Publication number Publication date
EP0107425A2 (en) 1984-05-02
JPS5999278A (en) 1984-06-07

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

Designated state(s): DE FR GB IT

PUAL Search report despatched

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AK Designated contracting states

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STAA Information on the status of an ep patent application or granted ep patent

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18D Application deemed to be withdrawn

Effective date: 19850715

RIN1 Information on inventor provided before grant (corrected)

Inventor name: WALTER, DEREK OSCAR