NL172893C - SYSTEM FOR DETECTING OBJECTS IN A MONITORING AREA. - Google Patents

SYSTEM FOR DETECTING OBJECTS IN A MONITORING AREA.

Info

Publication number
NL172893C
NL172893C NLAANVRAGE7004749,A NL7004749A NL172893C NL 172893 C NL172893 C NL 172893C NL 7004749 A NL7004749 A NL 7004749A NL 172893 C NL172893 C NL 172893C
Authority
NL
Netherlands
Prior art keywords
monitoring area
detecting objects
objects
detecting
monitoring
Prior art date
Application number
NLAANVRAGE7004749,A
Other languages
Dutch (nl)
Other versions
NL7004749A (en
NL172893B (en
Original Assignee
Unisearch Ltd
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 Unisearch Ltd filed Critical Unisearch Ltd
Publication of NL7004749A publication Critical patent/NL7004749A/xx
Publication of NL172893B publication Critical patent/NL172893B/en
Application granted granted Critical
Publication of NL172893C publication Critical patent/NL172893C/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/74—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
    • G01S13/75—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems using transponders powered from received waves, e.g. using passive transponders, or using passive reflectors
    • G01S13/751—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems using transponders powered from received waves, e.g. using passive transponders, or using passive reflectors wherein the responder or reflector radiates a coded signal
    • G01S13/755—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems using transponders powered from received waves, e.g. using passive transponders, or using passive reflectors wherein the responder or reflector radiates a coded signal using delay lines, e.g. acoustic delay lines
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/74—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
    • G01S13/75—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems using transponders powered from received waves, e.g. using passive transponders, or using passive reflectors
    • G01S13/751—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems using transponders powered from received waves, e.g. using passive transponders, or using passive reflectors wherein the responder or reflector radiates a coded signal
    • G01S13/753—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems using transponders powered from received waves, e.g. using passive transponders, or using passive reflectors wherein the responder or reflector radiates a coded signal using frequency selective elements, e.g. resonator
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/24—Electrical actuation by interference with electromagnetic field distribution

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Electromagnetism (AREA)
  • Burglar Alarm Systems (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Radar Systems Or Details Thereof (AREA)
NLAANVRAGE7004749,A 1969-04-02 1970-04-02 SYSTEM FOR DETECTING OBJECTS IN A MONITORING AREA. NL172893C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AU5297069 1969-04-02

Publications (3)

Publication Number Publication Date
NL7004749A NL7004749A (en) 1970-10-06
NL172893B NL172893B (en) 1983-06-01
NL172893C true NL172893C (en) 1983-11-01

Family

ID=3739082

Family Applications (1)

Application Number Title Priority Date Filing Date
NLAANVRAGE7004749,A NL172893C (en) 1969-04-02 1970-04-02 SYSTEM FOR DETECTING OBJECTS IN A MONITORING AREA.

Country Status (12)

Country Link
JP (1) JPS5122797B1 (en)
AR (1) AR211833A1 (en)
BE (1) BE748053A (en)
BR (1) BR7017853D0 (en)
CH (1) CH522259A (en)
DE (1) DE2015319C3 (en)
FR (1) FR2038186A1 (en)
GB (1) GB1290097A (en)
IL (1) IL34201A0 (en)
LU (1) LU60651A1 (en)
NL (1) NL172893C (en)
SE (1) SE341363B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4481428A (en) * 1981-05-19 1984-11-06 Security Tag Systems, Inc. Batteryless, portable, frequency divider useful as a transponder of electromagnetic radiation
US4413254A (en) * 1981-09-04 1983-11-01 Sensormatic Electronics Corporation Combined radio and magnetic energy responsive surveillance marker and system
US4642640A (en) * 1983-04-25 1987-02-10 Sensormatic Electronics Corporation Signal receptor-reradiator and surveillance tag using the same
US4736207A (en) * 1986-01-31 1988-04-05 Sensormatic Electronics Corporation Tag device and method for electronic article surveillance
US4951057A (en) * 1989-11-13 1990-08-21 X-Cyte, Inc. Inductive input/output coupling for a surface acoustic wave device
US5095240A (en) * 1989-11-13 1992-03-10 X-Cyte, Inc. Inductively coupled saw device and method for making the same
WO2019238201A1 (en) * 2018-06-11 2019-12-19 Hivetracker Sa A sytem for determining the location of mobile units in a warehouse and a warehouse provided with such system

Also Published As

Publication number Publication date
IL34201A0 (en) 1970-05-21
BR7017853D0 (en) 1973-04-17
DE2015319C3 (en) 1980-02-21
JPS5122797B1 (en) 1976-07-12
FR2038186A1 (en) 1971-01-08
SE341363B (en) 1971-12-20
NL7004749A (en) 1970-10-06
LU60651A1 (en) 1971-06-14
BE748053A (en) 1970-09-28
NL172893B (en) 1983-06-01
DE2015319B2 (en) 1979-06-28
GB1290097A (en) 1972-09-20
DE2015319A1 (en) 1970-10-15
CH522259A (en) 1972-06-15
AR211833A1 (en) 1978-03-31

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Legal Events

Date Code Title Description
V4 Discontinued because of reaching the maximum lifetime of a patent