ES402605A1 - A FAIL SAFE POSITION DETECTOR AND A TRANSPORTATION SYSTEM. - Google Patents

A FAIL SAFE POSITION DETECTOR AND A TRANSPORTATION SYSTEM.

Info

Publication number
ES402605A1
ES402605A1 ES402605A ES402605A ES402605A1 ES 402605 A1 ES402605 A1 ES 402605A1 ES 402605 A ES402605 A ES 402605A ES 402605 A ES402605 A ES 402605A ES 402605 A1 ES402605 A1 ES 402605A1
Authority
ES
Spain
Prior art keywords
components
position detector
safe position
transportation system
fail safe
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
ES402605A
Other languages
Spanish (es)
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.)
Westinghouse Electric Corp
Original Assignee
Westinghouse Electric Corp
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 Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Publication of ES402605A1 publication Critical patent/ES402605A1/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B1/00—Control systems of elevators in general
    • B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
    • B66B1/46—Adaptations of switches or switchgear
    • B66B1/50—Adaptations of switches or switchgear with operating or control mechanisms mounted in the car or cage or in the lift well or hoistway

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

A fail-safe position detector in which a pulsed light source induces corresponding electrical pulses in a light responsive receiver circuit when the components are in a desired relative position. The pulses generated in the receiver circuit are effective to operate a translating device through an isolation transformer. Threshold devices at critical junctures in the circuit eliminate marginal operation. The components are selected so that failure of one component or a combination of components will not cause false triggering of the translating device.
ES402605A 1971-05-19 1972-05-10 A FAIL SAFE POSITION DETECTOR AND A TRANSPORTATION SYSTEM. Expired ES402605A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US14472671A 1971-05-19 1971-05-19

Publications (1)

Publication Number Publication Date
ES402605A1 true ES402605A1 (en) 1976-04-16

Family

ID=22509857

Family Applications (1)

Application Number Title Priority Date Filing Date
ES402605A Expired ES402605A1 (en) 1971-05-19 1972-05-10 A FAIL SAFE POSITION DETECTOR AND A TRANSPORTATION SYSTEM.

Country Status (11)

Country Link
US (1) US3743056A (en)
AR (1) AR196304A1 (en)
BE (1) BE783645A (en)
BR (1) BR7203070D0 (en)
CA (1) CA997029A (en)
DE (1) DE2223930A1 (en)
ES (1) ES402605A1 (en)
FR (1) FR2138109B1 (en)
GB (1) GB1393177A (en)
IT (1) IT955658B (en)
NL (1) NL7206723A (en)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4019606A (en) * 1975-03-21 1977-04-26 Westinghouse Electric Corporation Elevator system
DE3237439T1 (en) * 1981-03-16 1983-12-01 Mitsubishi Denki K.K., Tokyo RUNNING CONTROL DEVICE FOR A RUNNING MOVABLE OBJECT
FR2520525A1 (en) * 1982-01-27 1983-07-29 Claude Hennion Sensor for controlling metallic slide door or shutter - uses photocell assembly to direct infrared radiation through hole in curtain to control positioning motor
FI77209C (en) * 1982-06-01 1989-02-10 Anglo Amer Corp South Africa FOERFARANDE OCH ANORDNING FOER ATT GE INFORMATION OM STATUS AV DOERRAR I EN HISSKORG.
IL73582A0 (en) * 1983-11-21 1985-02-28 Stevens Alec Martin Position infra red sensor system
US4620141A (en) * 1985-07-03 1986-10-28 Vericom Corp. Rain-controlled windshield wipers
US4798956A (en) * 1987-07-15 1989-01-17 Hochstein Peter A Electro-optical windshield moisture sensing
US4871917A (en) * 1988-04-19 1989-10-03 Donnelly Corporation Vehicular moisture sensor and mounting apparatus therefor
US4859867A (en) * 1988-04-19 1989-08-22 Donnelly Corporation Windshield moisture sensing control circuit
EP0357888B1 (en) * 1988-08-23 1993-12-29 Inventio Ag Method and device for generating lift shaft information
US4991693A (en) * 1989-02-16 1991-02-12 Inventio Ag Method of improving the landing of a hydraulic elevator car
SE8900568D0 (en) * 1989-02-17 1989-02-17 Bromma Conquip Ab SENSING ARRANGEMENTS AT LIFTKK
US4956591A (en) * 1989-02-28 1990-09-11 Donnelly Corporation Control for a moisture sensor
US4916374A (en) * 1989-02-28 1990-04-10 Donnelly Corporation Continuously adaptive moisture sensor system for wiper control
US4973844A (en) * 1989-07-10 1990-11-27 Donnelly Corporation Vehicular moisture sensor and mounting apparatus therefor
ES2077759T3 (en) * 1990-10-31 1995-12-01 Inventio Ag DOUBLE CHANNEL FORK LIGHT BARRIER WITH A "FAILSAFE" CONSTRUCTION.
DE4344795A1 (en) * 1993-12-28 1995-06-29 Liebherr Werk Ehingen Mobile crane with a telescopic boom
EP0751088B1 (en) * 1995-06-30 2001-02-28 Inventio Ag Device for generating shaft information
JP4262819B2 (en) * 1998-09-07 2009-05-13 東芝エレベータ株式会社 Elevator flooring equipment
US6279687B1 (en) * 1999-10-01 2001-08-28 Otis Elevator Company Method and system for detecting objects in a detection zone using modulated means
US6386326B2 (en) * 1999-10-01 2002-05-14 Otis Elevator Company Method and system for detecting objects in a detection zone using modulated means
CN101492138B (en) * 2009-03-12 2011-02-16 石家庄五龙制动器有限公司 Control circuit and control method of elevator braking system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3138357A (en) * 1960-07-13 1964-06-23 James Scott Electronic Enginee Gantry crane safety device
FR1395838A (en) * 1964-03-04 1965-04-16 Sfim Device for detecting the presence of objects by electromagnetic radiation
FR1427159A (en) * 1964-12-21 1966-02-04 Stops control device on floors of elevators, freight elevators and similar devices
GB1164793A (en) * 1966-04-05 1969-09-24 Photain Controls Ltd Photo-electric Detection Devices
FR2024637A1 (en) * 1968-11-30 1970-08-28 Electric Et Musical Ind

Also Published As

Publication number Publication date
AR196304A1 (en) 1973-12-18
DE2223930A1 (en) 1972-11-30
BE783645A (en) 1972-11-20
IT955658B (en) 1973-09-29
NL7206723A (en) 1972-11-21
US3743056A (en) 1973-07-03
BR7203070D0 (en) 1973-06-14
CA997029A (en) 1976-09-14
FR2138109B1 (en) 1973-07-13
FR2138109A1 (en) 1972-12-29
GB1393177A (en) 1975-05-07

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