AU4825790A - Detector systems - Google Patents

Detector systems

Info

Publication number
AU4825790A
AU4825790A AU48257/90A AU4825790A AU4825790A AU 4825790 A AU4825790 A AU 4825790A AU 48257/90 A AU48257/90 A AU 48257/90A AU 4825790 A AU4825790 A AU 4825790A AU 4825790 A AU4825790 A AU 4825790A
Authority
AU
Australia
Prior art keywords
detector systems
detector
systems
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.)
Abandoned
Application number
AU48257/90A
Inventor
John Trett
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.)
Formula Systems Ltd
Original Assignee
Formula Systems 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 Formula Systems Ltd filed Critical Formula Systems Ltd
Publication of AU4825790A publication Critical patent/AU4825790A/en
Abandoned 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
    • G01V8/00—Prospecting or detecting by optical means
    • G01V8/10—Detecting, e.g. by using light barriers
    • G01V8/20—Detecting, e.g. by using light barriers using multiple transmitters or receivers

Landscapes

  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Power-Operated Mechanisms For Wings (AREA)
  • Geophysics And Detection Of Objects (AREA)
AU48257/90A 1989-01-18 1990-01-12 Detector systems Abandoned AU4825790A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8901053 1989-01-18
GB8901053A GB2227309A (en) 1989-01-18 1989-01-18 Detection system

Publications (1)

Publication Number Publication Date
AU4825790A true AU4825790A (en) 1990-08-13

Family

ID=10650204

Family Applications (1)

Application Number Title Priority Date Filing Date
AU48257/90A Abandoned AU4825790A (en) 1989-01-18 1990-01-12 Detector systems

Country Status (3)

Country Link
AU (1) AU4825790A (en)
GB (1) GB2227309A (en)
WO (1) WO1990008092A1 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5149921A (en) * 1991-07-10 1992-09-22 Innovation Industries, Inc. Self correcting infrared intrusion detection system
GB9120267D0 (en) * 1991-09-23 1991-11-06 Memco Med Ltd Lift door apparatus
GB2266143A (en) * 1992-04-16 1993-10-20 Ind Tech Res Inst Palm-triggered photo switch
CN1121039A (en) * 1994-09-16 1996-04-24 P·J·汤姆生 A lift sensor
CA2158902A1 (en) * 1994-10-25 1996-04-26 Brian J. Amend Weak beam detection
US5567931A (en) * 1994-10-25 1996-10-22 Otis Elevator Company Variable beam detection using a dynamic detection threshold
US5996281A (en) * 1996-10-31 1999-12-07 Optex Co., Ltd. Safety auxiliary apparatus for automatic door assembly
DE10129230C1 (en) 2001-06-19 2002-06-20 Dorma Gmbh & Co Kg Sensor arrangement for room area involves transmitters and receivers, and auxiliary transmitters and receivers, in modules, in casting compound
ATE532736T1 (en) * 2004-09-03 2011-11-15 Otis Elevator Co ELEVATOR WITH A DEVICE FOR DETECTING FOREIGN BODY AND IN PARTICULAR FINGERS BETWEEN THE DOORS AND THE ADJACENT WALLS OF AN ELEVATOR CABIN WITH GLASS DOORS
ITMI20050640A1 (en) * 2005-04-14 2006-10-15 Fin Men S P A SAFETY SYSTEM FOR AUTOMATIC GATES
IT201900001475A1 (en) * 2019-02-04 2020-08-04 Microtronics Srl BATTERY POWERED WIRELESS SAFETY LIGHT CURTAIN FOR APPLICATION ON THE MOVABLE LEAF OF AUTOMATIC SLIDING GATES / DOORS
CN114101177B (en) * 2021-11-25 2023-02-17 广东电网有限责任公司 Sundry detection and cleaning device

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2900521A (en) * 1953-07-21 1959-08-18 Westinghouse Electric Corp Door control apparatus
US3746863A (en) * 1972-03-15 1973-07-17 Exotron Ind Ltd Light curtain control for a switch
GB1420203A (en) * 1972-10-07 1976-01-07 Hird Brown Ltd Intrusion detection apparatus
US3816745A (en) * 1972-11-20 1974-06-11 Innovation Ind Inc Optically-coupled sensing and control system
US3925681A (en) * 1973-03-13 1975-12-09 Grudelbach Hans Dieter Monitoring, counting and safety apparatus
US3825745A (en) * 1973-05-21 1974-07-23 Electronics Corp America Object detecting system
SE418426B (en) * 1978-04-10 1981-05-25 Telub Ab Light Curtain
US4266124A (en) * 1979-08-10 1981-05-05 Data Instruments, Inc. Photoelectric object detector system
DE3266726D1 (en) * 1981-01-26 1985-11-14 Reginald Kenneth Payne Proximity detector circuitry especially for lift doors
WO1982002787A1 (en) * 1981-02-10 1982-08-19 Gray John E Photoelectric obstruction detector for elevator doorways
US4650990A (en) * 1984-08-16 1987-03-17 Joensson Nils Processor-controlled light screen wherein light beam carries coded signals
GB8527277D0 (en) * 1985-11-06 1985-12-11 Formula Systems Ltd Proximity detector
DE3603927A1 (en) * 1986-02-07 1987-08-13 Efaflex Transport Lager DEVICE FOR DETECTING A SHADOW OF A SIGNAL SENDED BY AT LEAST ONE TRANSMITTER IN AN INTERMEDIATE SPACE BETWEEN THE TRANSMITTER AND RECEIVER
US4823010A (en) * 1987-05-11 1989-04-18 The Stanley Works Sliding door threshold sensor

Also Published As

Publication number Publication date
GB2227309A (en) 1990-07-25
WO1990008092A1 (en) 1990-07-26
GB8901053D0 (en) 1989-03-15

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