IT7919600A0 - IMPROVEMENTS IN OR RELATING TO OPTICAL DETECTION SYSTEMS. - Google Patents

IMPROVEMENTS IN OR RELATING TO OPTICAL DETECTION SYSTEMS.

Info

Publication number
IT7919600A0
IT7919600A0 IT7919600A IT1960079A IT7919600A0 IT 7919600 A0 IT7919600 A0 IT 7919600A0 IT 7919600 A IT7919600 A IT 7919600A IT 1960079 A IT1960079 A IT 1960079A IT 7919600 A0 IT7919600 A0 IT 7919600A0
Authority
IT
Italy
Prior art keywords
relating
optical detection
detection systems
systems
optical
Prior art date
Application number
IT7919600A
Other languages
Italian (it)
Other versions
IT1110994B (en
Original Assignee
Plessey Handel Investment Ag
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 Plessey Handel Investment Ag filed Critical Plessey Handel Investment Ag
Publication of IT7919600A0 publication Critical patent/IT7919600A0/en
Application granted granted Critical
Publication of IT1110994B publication Critical patent/IT1110994B/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
    • G08B13/181—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using active radiation detection systems
    • G08B13/183—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using active radiation detection systems by interruption of a radiation beam or barrier
    • G08B13/186—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using active radiation detection systems by interruption of a radiation beam or barrier using light guides, e.g. optical fibres
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/02—Mechanical actuation
    • G08B13/08—Mechanical actuation by opening, e.g. of door, of window, of drawer, of shutter, of curtain, of blind
IT19600/79A 1978-01-28 1979-01-25 IMPROVEMENT IN OR RELATING TO OPTICAL DETECTION SYSTEMS IT1110994B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB354278 1978-01-28

Publications (2)

Publication Number Publication Date
IT7919600A0 true IT7919600A0 (en) 1979-01-25
IT1110994B IT1110994B (en) 1986-01-13

Family

ID=9760288

Family Applications (1)

Application Number Title Priority Date Filing Date
IT19600/79A IT1110994B (en) 1978-01-28 1979-01-25 IMPROVEMENT IN OR RELATING TO OPTICAL DETECTION SYSTEMS

Country Status (3)

Country Link
DE (1) DE2903055A1 (en)
FR (1) FR2415812A1 (en)
IT (1) IT1110994B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3436030A1 (en) * 1984-10-01 1986-04-17 Peter 8000 München Schubert Arrangement for monitoring the contact between objects
DE4242550C2 (en) * 1991-12-21 1995-08-24 Hirschmann Richard Gmbh Co Device for monitoring a closure element
ATE127249T1 (en) * 1991-12-21 1995-09-15 Hal Sicherheitstechnik Gmbh DEVICE FOR MONITORING A CLOSURE.
DE4203850A1 (en) * 1992-02-10 1993-08-12 Reinhold Ott Detecting movement of doors, windows etc. - using e.g. infrared light source and receiver, with radiation reaching receiver when object is in set position
DE4242549C1 (en) * 1992-12-16 1994-03-17 Hirschmann Richard Gmbh Co Intruder detector for opening window - incorporating glass breakage detector and transformer monitoring window position
DE19622495C2 (en) * 1996-06-05 2003-12-18 Ifm Electronic Gmbh Thread detection device

Also Published As

Publication number Publication date
DE2903055A1 (en) 1979-08-09
FR2415812A1 (en) 1979-08-24
IT1110994B (en) 1986-01-13

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