CA1148635A - Proximity detector - Google Patents

Proximity detector

Info

Publication number
CA1148635A
CA1148635A CA000348083A CA348083A CA1148635A CA 1148635 A CA1148635 A CA 1148635A CA 000348083 A CA000348083 A CA 000348083A CA 348083 A CA348083 A CA 348083A CA 1148635 A CA1148635 A CA 1148635A
Authority
CA
Canada
Prior art keywords
antenna
signals
sections
detector
voltage
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
CA000348083A
Other languages
English (en)
French (fr)
Inventor
Jean Evin
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of CA1148635A publication Critical patent/CA1148635A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
    • B66B13/24—Safety devices in passenger lifts, not otherwise provided for, for preventing trapping of passengers
    • B66B13/26—Safety devices in passenger lifts, not otherwise provided for, for preventing trapping of passengers between closing doors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL 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
    • G08B13/2491—Intrusion detection systems, i.e. where the body of an intruder causes the interference with the electromagnetic field

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geophysics (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Elevator Door Apparatuses (AREA)
  • Power-Operated Mechanisms For Wings (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)
  • Electronic Switches (AREA)
  • Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)
  • Indicating And Signalling Devices For Elevators (AREA)
CA000348083A 1979-03-28 1980-03-21 Proximity detector Expired CA1148635A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7908410A FR2452720A1 (fr) 1979-03-28 1979-03-28 Detecteur de proximite et element pourvu de ce detecteur
FR79/08410 1979-03-28

Publications (1)

Publication Number Publication Date
CA1148635A true CA1148635A (en) 1983-06-21

Family

ID=9223909

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000348083A Expired CA1148635A (en) 1979-03-28 1980-03-21 Proximity detector

Country Status (10)

Country Link
US (1) US4326197A (enExample)
EP (1) EP0017547B1 (enExample)
AT (1) ATE8302T1 (enExample)
BR (1) BR8001820A (enExample)
CA (1) CA1148635A (enExample)
DE (1) DE3068405D1 (enExample)
ES (1) ES489970A1 (enExample)
FI (1) FI70092C (enExample)
FR (1) FR2452720A1 (enExample)
SU (1) SU957774A3 (enExample)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3114792C2 (de) * 1981-04-11 1983-02-03 Karl 7298 Loßburg Hehl Schaltereinrichtung mit mehreren kontaktlosen Näherungsschaltern für Einzelfunktionen
FI71206C (fi) * 1983-12-14 1986-11-24 Kone Oy Foerfarande och anordning foer aostadkommande av en kontrastbild
FI70651C (fi) * 1984-10-05 1986-09-24 Kone Oy Foerfarande och anordning foer oevervakning av omraodet framfoer en hissdoerr
GB8426010D0 (en) * 1984-10-15 1984-11-21 Memco Med Ltd Automatic control
DE3632624C1 (de) * 1986-09-25 1988-03-10 Balluff Gebhard Feinmech Stoerfeldunempfindlicher Naeherungsschalter
US6050369A (en) * 1994-10-07 2000-04-18 Toc Holding Company Of New York, Inc. Elevator shaftway intrusion device using optical imaging processing
US5644111A (en) * 1995-05-08 1997-07-01 New York City Housing Authority Elevator hatch door monitoring system

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2720284A (en) * 1952-11-13 1955-10-11 Otis Elevator Co Elevator door control mechanism
US3018851A (en) * 1957-11-19 1962-01-30 Otis Elevator Co Control mechanism for doors
FR1436069A (fr) * 1965-03-12 1966-04-22 Saxby Détecteur de proximité
US3439358A (en) * 1965-11-30 1969-04-15 George Washington Ltd Activity detectors
US3497995A (en) * 1968-04-19 1970-03-03 Stanley Works Height sensitive proximity door operator system
US3496381A (en) * 1968-05-10 1970-02-17 Stanley Works Proximity control guard plate
US3614724A (en) * 1970-04-08 1971-10-19 Atomic Energy Commission Detection system
US3794992A (en) * 1972-02-07 1974-02-26 Gen Dynamics Corp Radio frequency intrusion detection system
FR2173804B1 (enExample) * 1972-03-03 1975-03-21 Salmet Gaston
US3846790A (en) * 1973-06-08 1974-11-05 Honeywell Inc Intrusion detection systems
US3953770A (en) * 1974-07-11 1976-04-27 Jinnosuke Hayashi Safety equipment for machinery used in processing plates, etc.
US3967261A (en) * 1974-10-10 1976-06-29 Fudaley Solly L Proximity sensor with simultaneously active intermixed sensor types
US3973208A (en) * 1975-02-14 1976-08-03 Dovey Manufacturing Company Capacitor detector device
GB1529862A (en) * 1976-01-19 1978-10-25 Thorn Domestic Appliances Ltd Proximity switch
JPS5363582A (en) * 1976-11-18 1978-06-07 Mitsubishi Electric Corp Proximity detector
JPS606280B2 (ja) * 1977-03-24 1985-02-16 三菱電機株式会社 近接検出装置

Also Published As

Publication number Publication date
FI70092C (fi) 1986-09-12
ATE8302T1 (de) 1984-07-15
EP0017547B1 (fr) 1984-07-04
ES489970A1 (es) 1980-10-01
FR2452720B1 (enExample) 1984-01-27
SU957774A3 (ru) 1982-09-07
FR2452720A1 (fr) 1980-10-24
BR8001820A (pt) 1980-11-18
EP0017547A1 (fr) 1980-10-15
FI800932A7 (fi) 1980-09-29
US4326197A (en) 1982-04-20
DE3068405D1 (en) 1984-08-09
FI70092B (fi) 1986-01-31

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Legal Events

Date Code Title Description
MKEX Expiry
MKEX Expiry

Effective date: 20000621