EP3418237A1 - Système d'ascenseur ayant un dispositif de surveillance de sécurité comprenant un capteur 2d permettant une supervision sans contact de plan de supervision - Google Patents

Système d'ascenseur ayant un dispositif de surveillance de sécurité comprenant un capteur 2d permettant une supervision sans contact de plan de supervision Download PDF

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Publication number
EP3418237A1
EP3418237A1 EP17177366.6A EP17177366A EP3418237A1 EP 3418237 A1 EP3418237 A1 EP 3418237A1 EP 17177366 A EP17177366 A EP 17177366A EP 3418237 A1 EP3418237 A1 EP 3418237A1
Authority
EP
European Patent Office
Prior art keywords
monitoring device
counterweight
safety monitoring
sensor
elevator
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.)
Withdrawn
Application number
EP17177366.6A
Other languages
German (de)
English (en)
Inventor
Om Prakash
Danesh KAMATH
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.)
Inventio AG
Original Assignee
Inventio 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 Inventio AG filed Critical Inventio AG
Priority to EP17177366.6A priority Critical patent/EP3418237A1/fr
Publication of EP3418237A1 publication Critical patent/EP3418237A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/0043—Devices enhancing safety during maintenance
    • B66B5/005—Safety of maintenance personnel
    • B66B5/0056—Safety of maintenance personnel by preventing crushing

Definitions

  • a technician may be required to go on a top of the elevator cabin and make some movement of the cabin.
  • a body part such as an arm or head of the technician may get hit in case the body part is exposed such that it is in line with the travel path of the counterweight.
  • the safety monitoring device is adapted for signal communication with the elevator controller.
  • the safety monitoring device then may transmit a signal to the elevator controller for initiating stopping of the motion of the counterweight upon detecting that the determined distance to an object within the supervision plane is smaller than the predetermined allowable minimum distance.
  • a safety controller may be used instead of the elevator controller.
  • the safety controller is used to monitor and control safety relevant issues of the elevator.
  • the safety controller might be a part of the elevator controller or in might be a separate part.
  • the safety monitoring device itself may determine whether an object is occurring in its supervision plane and, if this is the case, may measure the distance to this object. Then, if this distance is critically short, the safety monitoring device may forward this information or a corresponding trigger signal to the elevator controller or the safety controller in order to cause the elevator controller or the safety controller to stop the current motion of the counterweight, for example by actuating a drive engine brake or an emergency brake.
  • the safety monitoring device may reliably stop any possibly dangerous motion of the cabin and the counterweight before an accidental collision may occur.
  • the predetermined allowable minimum distance takes into consideration that cabin and counterweight moves toward each other and therefore needs twice a distance to prevent collision.
  • a hard-wired connection between the safety monitoring device and the elevator controller may be used for one or both, energy supply to the safety monitoring device and signal transmission between the safety monitoring device and the elevator controller.
  • Such power and/or data transmission may be established for example via a cord or a hanging cable connecting the elevator controller with the safety monitoring device, the elevator controller typically being installed within the elevator shaft at a stationary location, whereas the safety monitoring device generally being attached for example to the displaceable counterweight.
  • the safety controller might be used instead of the elevator controller.
  • the value for the allowable minimum distance, at which, when an object is detected within the supervision plane, safety measures are to be initiated may be set such that sufficient time remains for stopping the counterweight before a collision occurs. Such distance may also be interpreted as braking distance.
  • the allowable minimum distance then generally depends on the actual velocity of the counterweight. I.e., the faster the counterweight is displaced throughout the elevator shaft, the longer the allowable minimum distance should be set.
  • the safety monitoring device is adapted for learning information about positions of regular objects within the elevator shaft during a teach-in process and the safety monitoring device is adapted for taking into account the learned information upon initiating the safety measures.
  • Fig. 1 shows a side view of an elevator arrangement according to an embodiment of the present invention.
  • the safety monitoring device 15 may span its supervision plane 21 underneath the counterweight 5, i.e. it could "look” down in parallel to the travel direction 6 of the counterweight 5 and along the travel path 31. Specifically, the safety monitoring device 15 may monitor the entire two-dimensional supervision plane 21 for any objects 28 or obstacles coming close to or even protruding into the travel path 31 of the counterweight 5.
  • the safety monitoring device 15 may then use for example a wireless transmitter device 33 for transmitting a trigger signal towards the elevator controller 13 or the corresponding safety controller in order to cause the elevator controller 13 to stop any motion of the counterweight 5 and the cabin 3.
  • the safety monitoring device 15 could send a signal for initiating safety measures via hardwiring, including for example a hanging cable between the displaceable counterweight 5 and some stationary structures within the elevator shaft 11, towards the elevator controller 13 or the safety controller.
  • the safety monitoring device 15 could comprise a relay which is opened upon detecting that an object 28 coming closer than the predetermined allowable minimum distance d m , the relay being included into a safety chain continuously monitored by the elevator controller 13 respectively the safety controller.
  • the emitted laser beam 37 is typically pulsed or otherwise modulated in time
  • a time-of-flight (TOF) analysis may be performed upon detecting such reflected part of the laser beam 37.
  • TOF time-of-flight
  • the distance d between the hand 29 and the safety monitoring device 15 may be determined.
  • the 2D-sensor 19 forms a laser distance-measurement sensor 20.
  • the safety monitoring device 15 may automatically initiate suitable safety measures such as rapidly stopping any motion of the counterweight 5 and the cabin 3 carrying the technician 23.

Landscapes

  • Maintenance And Inspection Apparatuses For Elevators (AREA)
EP17177366.6A 2017-06-22 2017-06-22 Système d'ascenseur ayant un dispositif de surveillance de sécurité comprenant un capteur 2d permettant une supervision sans contact de plan de supervision Withdrawn EP3418237A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP17177366.6A EP3418237A1 (fr) 2017-06-22 2017-06-22 Système d'ascenseur ayant un dispositif de surveillance de sécurité comprenant un capteur 2d permettant une supervision sans contact de plan de supervision

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17177366.6A EP3418237A1 (fr) 2017-06-22 2017-06-22 Système d'ascenseur ayant un dispositif de surveillance de sécurité comprenant un capteur 2d permettant une supervision sans contact de plan de supervision

Publications (1)

Publication Number Publication Date
EP3418237A1 true EP3418237A1 (fr) 2018-12-26

Family

ID=59101414

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17177366.6A Withdrawn EP3418237A1 (fr) 2017-06-22 2017-06-22 Système d'ascenseur ayant un dispositif de surveillance de sécurité comprenant un capteur 2d permettant une supervision sans contact de plan de supervision

Country Status (1)

Country Link
EP (1) EP3418237A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020193078A (ja) * 2019-05-28 2020-12-03 三菱電機ビルテクノサービス株式会社 クリアランスの測定方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5410149A (en) * 1993-07-14 1995-04-25 Otis Elevator Company Optical obstruction detector with light barriers having planes of light for controlling automatic doors
JPH11335018A (ja) 1998-05-26 1999-12-07 Toshiba Elevator Co Ltd エレベータ
CN101628676A (zh) 2008-07-15 2010-01-20 株式会社日立制作所 电梯维修时用的安全装置
CN101941622A (zh) 2010-08-23 2011-01-12 苏州巨立电梯有限公司 电梯轿顶智能护栏
JP2012051665A (ja) * 2010-08-31 2012-03-15 Toshiba Elevator Co Ltd エレベータの安全装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5410149A (en) * 1993-07-14 1995-04-25 Otis Elevator Company Optical obstruction detector with light barriers having planes of light for controlling automatic doors
JPH11335018A (ja) 1998-05-26 1999-12-07 Toshiba Elevator Co Ltd エレベータ
CN101628676A (zh) 2008-07-15 2010-01-20 株式会社日立制作所 电梯维修时用的安全装置
CN101941622A (zh) 2010-08-23 2011-01-12 苏州巨立电梯有限公司 电梯轿顶智能护栏
JP2012051665A (ja) * 2010-08-31 2012-03-15 Toshiba Elevator Co Ltd エレベータの安全装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020193078A (ja) * 2019-05-28 2020-12-03 三菱電機ビルテクノサービス株式会社 クリアランスの測定方法
JP7346910B2 (ja) 2019-05-28 2023-09-20 三菱電機ビルソリューションズ株式会社 クリアランスの測定方法

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