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GB2064910B - Process for the surveyance of premises by means of directional pulse waves and installation for carrying out such process - Google Patents

Process for the surveyance of premises by means of directional pulse waves and installation for carrying out such process

Info

Publication number
GB2064910B
GB2064910B GB8038543A GB8038543A GB2064910B GB 2064910 B GB2064910 B GB 2064910B GB 8038543 A GB8038543 A GB 8038543A GB 8038543 A GB8038543 A GB 8038543A GB 2064910 B GB2064910 B GB 2064910B
Authority
GB
United Kingdom
Prior art keywords
surveyance
premises
installation
carrying
pulse waves
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.)
Expired
Application number
GB8038543A
Other versions
GB2064910A (en
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.)
Zellweger Uster AG
Original Assignee
Zellweger Uster 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 Zellweger Uster AG filed Critical Zellweger Uster AG
Priority to GB8038543A priority Critical patent/GB2064910B/en
Publication of GB2064910A publication Critical patent/GB2064910A/en
Application granted granted Critical
Publication of GB2064910B publication Critical patent/GB2064910B/en
Expired 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
    • G08B13/181—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
    • G08B13/187—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 interference of a radiation field

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Length-Measuring Devices Using Wave Or Particle Radiation (AREA)
GB8038543A 1980-01-11 1980-01-11 Process for the surveyance of premises by means of directional pulse waves and installation for carrying out such process Expired GB2064910B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8038543A GB2064910B (en) 1980-01-11 1980-01-11 Process for the surveyance of premises by means of directional pulse waves and installation for carrying out such process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8038543A GB2064910B (en) 1980-01-11 1980-01-11 Process for the surveyance of premises by means of directional pulse waves and installation for carrying out such process

Publications (2)

Publication Number Publication Date
GB2064910A GB2064910A (en) 1981-06-17
GB2064910B true GB2064910B (en) 1985-01-30

Family

ID=10517693

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8038543A Expired GB2064910B (en) 1980-01-11 1980-01-11 Process for the surveyance of premises by means of directional pulse waves and installation for carrying out such process

Country Status (1)

Country Link
GB (1) GB2064910B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0107042B1 (en) * 1982-10-01 1987-01-07 Cerberus Ag Infrared detector for spotting an intruder in an area
DE4119797C2 (en) * 1991-06-15 1994-02-24 Leuze Electronic Gmbh & Co A transmitter, a receiver and a circuit arrangement for signal evaluation monitoring device

Also Published As

Publication number Publication date
GB2064910A (en) 1981-06-17

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19970111