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WO2004013030A1 - Ascenseur utilisant des dispositifs d'identification par radiofrequence - Google Patents

Ascenseur utilisant des dispositifs d'identification par radiofrequence Download PDF

Info

Publication number
WO2004013030A1
WO2004013030A1 PCT/US2002/024357 US0224357W WO2004013030A1 WO 2004013030 A1 WO2004013030 A1 WO 2004013030A1 US 0224357 W US0224357 W US 0224357W WO 2004013030 A1 WO2004013030 A1 WO 2004013030A1
Authority
WO
WIPO (PCT)
Prior art keywords
frequency
rfid
switch
condition
button
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.)
Ceased
Application number
PCT/US2002/024357
Other languages
English (en)
Inventor
Alberto Vecchiotti
Adriana Bacellar
Luiz Bacellar
Deborah Haas
Christian Netter
Paul Stucky
William A. Veronesi
Joseph Zacchio
Bruce Zepke
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.)
Otis Elevator Co
Original Assignee
Otis Elevator Co
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 Otis Elevator Co filed Critical Otis Elevator Co
Priority to US10/523,119 priority Critical patent/US7264090B2/en
Priority to PCT/US2002/024357 priority patent/WO2004013030A1/fr
Priority to JP2004525926A priority patent/JP4205057B2/ja
Priority to BRPI0215827-2A priority patent/BR0215827B1/pt
Priority to DE60239427T priority patent/DE60239427D1/de
Priority to HK05109801.5A priority patent/HK1077798B/xx
Priority to CNB028294025A priority patent/CN100519390C/zh
Priority to ES02761210T priority patent/ES2359630T3/es
Priority to AU2002326490A priority patent/AU2002326490A1/en
Priority to EP02761210A priority patent/EP1539630B1/fr
Publication of WO2004013030A1 publication Critical patent/WO2004013030A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • 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
    • B66B1/3415—Control system configuration and the data transmission or communication within the control system
    • 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
    • B66B1/3415—Control system configuration and the data transmission or communication within the control system
    • B66B1/3446—Data transmission or communication within the control system
    • B66B1/3453—Procedure or protocol for the data transmission or communication
    • 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
    • B66B13/22—Operation of door or gate contacts

Definitions

  • This invention relates to an elevator safety chain in which the status or condition of a monitored safety-related parameter of the elevator is communicated by wireless transmission from an interrogated, passive RFID.
  • the safety chain of literally every elevator comprises a series of switches, all of which must be made (closed) so that the entire safety chain is a closed, conductive circuit, otherwise, the elevator is prevented from operating.
  • elevator safety chains comprised a plurality of discrete switches, each of which have a moveable contact which connects between a pair of circuits when a parameter is in a safe condition, and which disconnects from at least one circuit in the safety chain when the parameter is no longer in a safe condition.
  • Examples of switches in the safety chain are hoistway door lock switches, elevator door switch, emergency stop switch, inspection switch on the top of a cab, upper and lower hoistway limit switches, and the overspeed switch.
  • the various switches are interconnected by wiring, which in turn must conform to local government regulation codes with respect to size and location of wires and conduits. Furthermore, once a building is wired to provide a safety chain, it is difficult to alter the building configuration, or the architectural design of the landings, due to the imbedded wiring.
  • the elevator and hoistway door lock switches must be mounted on the doors themselves, and therefore are connected by flexible wiring either to the cab or to the building, as the case may be.
  • each parameter related to elevator safety has a sensor related to a wireless communication means, such as transceivers, so that when the monitored parameter becomes unsafe, the condition of the sensor causes the transceiver to be switched off.
  • a master transceiver related to the elevator controller sends a token to a first transceiver, which in turn will send it to the next transceiver, and so forth.
  • Power for the transceivers may be supplied by hardwire to the building power, by passive battery, or by a battery system which is recharged by inductive coupling, such as with a recharging circuit disposed on the elevator car.
  • hardwired power obviates the advantage of a wireless system, in that wires supplied for power are as inconvenient as wires interconnecting the safety chain switches. Battery operation requires far too much maintenance, cost and environmental impact. Inductively coupled recharging systems are complex and unreliable.
  • Objects of the invention include a safety chain: having components which rely on neither hardwired power nor batteries; which are passive; in which sensing of the unsafe condition may be integral with the related transceiver; providing improved flexibility, low cost, low maintenance, and ease of upgrading at low cost.
  • Other objects include provision of: improved communication of elevator service calls; integrated wireless transmission of elevator service calls; and simplified, passive communication of elevator service calls.
  • transceivers related to various conditions monitored by an elevator safety chain and related to call buttons are passive, comprising, for instance, radio frequency identification devices (RFIDs).
  • RFIDs radio frequency identification devices
  • a switch which becomes open upon the existence of an unsafe elevator condition may be connected directly with, or incorporated into the related passive transceiver.
  • the sensing of an unsafe condition may be an integral part of the passive transceiver; an example is the use of adjacent structural parts of the elevator (such as a door component) to either tune or detune the frequency determining circuit of the passive transceiver so as to communicate the safe or unsafe condition of the corresponding elevator parameter.
  • the RFID is powered by the received electromagnetic energy, and may respond only to a signal of its own unique frequency, or to a signal on a common frequency which however has an address code unique to the individual RFID.
  • the RFID will then respond by transmitting a signal which may contain its address and which, in this case, will contain the condition of the related parameter, in the safety chain or a call button. If an address is not appropriate, the frequency of the RFID will identify the source of the response.
  • Fig. 1 is a simplified, front elevation schematic of an elevator hoistway and machine room incorporating the invention.
  • Fig. 2 is a simplified, front elevation schematic of an elevator car incorporating the present invention.
  • Figs. 3-7 are simplified schematic illustrations of passive transceiver tuning circuits with which the invention may be practiced.
  • Fig. 8 is a partial side elevation view of a hoistway door lock, illustrating how a passive transmitter of the present invention may become tuned when adjacent to a safety-related structural element.
  • Fig. 9 is a simplified, partial side elevation view of the elevator limits, illustrating how passive transceivers of the invention may become detuned when adjacent to a safety-related structural element.
  • a hoistway 11 of an elevator system includes a plurality of hoistway doors 12, 13, there being one set 12, 13 for each landing.
  • Each set has a passive transmitter 15, such as an RFID, associated with the corresponding hoistway door lock.
  • the condition of the door lock is part of the safety chain; if any of the hoistway doors are not locked, the elevator safety chain will fail.
  • Each landing also has an up hall call button with a related transceiver 14 or a down hall call button with a related transceiver 19, or both.
  • the hoistway also has disposed therein a plurality of transceivers 16 related to upper limit switches and a plurality of transceivers 17, 18 related to lower limit switches.
  • a transceiver 23 is in wired communication with the elevator car controller 24, and communicates with other transceivers and passive transmitters in the elevator system.
  • a transceiver 26 may interrogate the condition of the s hoistway doors for the three lowest floors by sending out signals either on a unique frequency or with a unique address code so as to successively interrogate the status of each related door lock as reflected by the corresponding one of the passive transmitters 15.
  • the transceiver 26 may interrogate the passive transmitters 17, 18 related to the lower limit switches.
  • a transceiver 27 may interrogate the passive transmitters 15 o related to the hoistway door locks of the upper three floors, and may interrogate the passive transmitters 16 to provide indications of the condition of the upper limits.
  • the transceiver 23 will then receive communications from the transceivers 26, 27 indicative of the various passive transmitter responses in the hoistway.
  • the transceiver 23 may also interrogate the passive transmitter 22 to determine the condition of the related overspeed 5 sensor.
  • additional transceivers such as transceivers 26, 27 may be provided so as to be within range of all of the transceivers 15 in the hoistway.
  • an elevator car 30 has a pair of doors 30, 32 and an RFID 33 related to the car door lock switch.
  • the elevator car 30 also has a plurality of car call buttons with related RFIDs 34, and an emergency stop switch with a related RFID 35.
  • an inspection switch on the top of the cab, and in this case, an RFID 36 related thereto.
  • the RFIDs 33-36 will be interrogated by any of the transceivers 23, 26, 27. There are other conditions in the elevator which are monitored within the safety chain, which are not shown herein for clarity.
  • the RFIDs may be arranged so as to reflect the condition of a safety-related parameter of the elevator, in a variety of ways. The simplest are shown in Figs. 3 and 4 where the frequency-determining RF loop containing a capacitor 40 and an inductor 41 is either opened by a switch 43 (Fig. 3) or shorted by a switch 44 (Fig. 4). Either of these arrangements will cause the RFID to provide no response at all. On the other hand, the RFIDs can be caused to produce two different responses, one indicative of a safe condition and the other indicative of an unsafe condition, as is illustrated in Fig. 5. Therein, an additional capacitor 47 is in series with the switch 48, the two being in parallel with the capacitor 40 and the inductor 41.
  • the s capacitor 47 When the condition is safe, the s capacitor 47 is in the circuit, causing the RFID to be responsive at a first frequency. But if the condition becomes unsafe, the switch 48 will become open and the capacitor 47 will no longer be in the circuit; then, the RFID will respond at a different frequency indicative of the unsafe condition. Utilizing a dual response of this type will allow the controller to identify the particular RFID which has sensed an unsafe condition, in o contrast with the prior art, serial-switch safety chain which provided no indication of which of the switches has become open and thus no indication of the nature of the failure. In the embodiments of Figs. 3-5, the switch must be disposed to react to the condition being monitored, and the RFID should be located immediately adjacent thereto, the switch and wiring being accommodated in the frequency-determining loop.
  • FIG. 7 An alternative form of response is illustrated in Fig. 7.
  • the capacitor 40 and inductor 41 may indicate one condition when the RFID is adjacent to a structure 51 having magnetic reluctance as indicated in Fig. 6, but will have a different frequency when there is no adjacent magnetic reluctance, as illustrated in Fig. 7.
  • This may be utilized either to sense the presence of magnetic reluctance 51 as being the safe condition, or to sense the presence of the magnetic reluctance 51 as being the unsafe condition.
  • the first of these is illustrated with respect to a hoistway door switch, a portion of which is shown in Fig. 8.
  • the lock selvage 53 (the locking lip) is fastened to the header 54 of the doorway.
  • the locking member 55 is disposed on a hoistway door 56.
  • a contact portion 62 (which normally makes a connection between two terminals on the hoistway door lock switch to indicate that the door lock is engaged) will be adjacent to an associated RFID 63 so as to provide tuning of the frequency-determining loop, as illustrated in Fig. 6, so as to provide a response indicative of safety.
  • the portion 62 is not immediately adjacent the RFID 63, the situation will be as in Fig. 7 and the response will either be non-existent, or indicative of an unsafe condition.
  • Fig. 9 The opposite situation may be obtained as illustrated in Fig. 9.
  • the lower limit switches 17, 18 are shown as disposed on a frame 66 which is mounted to the rail 67 by brackets 68.
  • the well-known cam 71 is disposed by brackets 72 to the stile 74, which comprises the main vertical frame of the elevator platform, as is known.
  • the cam 71 will be adjacent to the switch 17, causing it to detune the frequency-determining circuitry, as is illustrated in Fig. 6, and either causing there to be no response from the RFID 17 or, depending upon the protocol being used, a response indicative of the unsafe condition.
  • the call buttons may each have a passenger-actuated button switch incorporated into the RFIDs frequency determining circuitry (Figs. 3-5), or they may each have a passenger-displaced member with reluctance (Figs. 6 and 7).
  • the lights will normally be wired to building power; the RFID may connect the power through a solid state switch in response to a call confirmation signal transmitted to the RFID.
  • the interrogations should be at a repetition frequency, such as 5HZ or 10HZ, sufficient to coincide with button actuation, which may be as short as 200 msec to 500 msec.

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Indicating And Signalling Devices For Elevators (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)
  • Elevator Control (AREA)

Abstract

La présente invention concerne une chaîne de sécurité d'ascenseur comprenant une pluralité de dispositifs d'identification par radiofréquence (15-18, 22, 34-36 et 63), qui sont associés, respectivement, aux serrures des baies d'accès, aux limites supérieures de puits, aux limites inférieures de puits, à la détection de survitesse, au verrouillage des portes de cabine, à la commande d'arrêt d'urgence, aux restrictions de manoeuvre pour maintenance. Des dispositifs d'identification par radiofréquence peuvent être associés aux boutons de manoeuvre de cabine (34) et aux boutons de manoeuvre de paliers (14, 19). Les dispositifs d'identification par radiofréquence peuvent comporter un commutateur (43, 44) dans les circuits de fixation des fréquences (40, 41) qui bloque l'aptitude à réagir du dispositif d'identification par radiofréquence, ou un commutateur (48) qui modifie la fréquence de réaction. Les dispositifs d'identification par radiofréquence peuvent détecter des conditions de sécurité ou d'insécurité, ou des appels de cabine, par détection, en mode présence / absence, de réluctance magnétique adjacente (51, 62, 71).
PCT/US2002/024357 2002-08-01 2002-08-01 Ascenseur utilisant des dispositifs d'identification par radiofrequence Ceased WO2004013030A1 (fr)

Priority Applications (10)

Application Number Priority Date Filing Date Title
US10/523,119 US7264090B2 (en) 2002-08-01 2002-08-01 Elevator employing radio frequency identification devices (RFIDs)
PCT/US2002/024357 WO2004013030A1 (fr) 2002-08-01 2002-08-01 Ascenseur utilisant des dispositifs d'identification par radiofrequence
JP2004525926A JP4205057B2 (ja) 2002-08-01 2002-08-01 無線周波数識別装置（ＲＦＩＤｓ）を用いたエレベータ
BRPI0215827-2A BR0215827B1 (pt) 2002-08-01 2002-08-01 cadeia de segurança de elevador, sistema de chamada de elevador e sistema de elevador.
DE60239427T DE60239427D1 (de) 2002-08-01 2002-08-01 Hochfrequenzidentifikationsvorrichtungen (rfids) einsetzender aufzug
HK05109801.5A HK1077798B (en) 2002-08-01 Elevator employing radio frequency identification devices (rfids) and elevator call system
CNB028294025A CN100519390C (zh) 2002-08-01 2002-08-01 采用无线电频率识别装置(rfid)的提升机及一种提升机呼叫系统
ES02761210T ES2359630T3 (es) 2002-08-01 2002-08-01 Ascensor que uitliza dispositivos de identificación de radiofrecuencia (rfid).
AU2002326490A AU2002326490A1 (en) 2002-08-01 2002-08-01 Elevator employing radio frequency identification devices (rfids)
EP02761210A EP1539630B1 (fr) 2002-08-01 2002-08-01 Ascenseur utilisant des dispositifs d'identification par radiofrequence

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2002/024357 WO2004013030A1 (fr) 2002-08-01 2002-08-01 Ascenseur utilisant des dispositifs d'identification par radiofrequence

Publications (1)

Publication Number Publication Date
WO2004013030A1 true WO2004013030A1 (fr) 2004-02-12

Family

ID=31493893

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2002/024357 Ceased WO2004013030A1 (fr) 2002-08-01 2002-08-01 Ascenseur utilisant des dispositifs d'identification par radiofrequence

Country Status (8)

Country Link
EP (1) EP1539630B1 (fr)
JP (1) JP4205057B2 (fr)
CN (1) CN100519390C (fr)
AU (1) AU2002326490A1 (fr)
BR (1) BR0215827B1 (fr)
DE (1) DE60239427D1 (fr)
ES (1) ES2359630T3 (fr)
WO (1) WO2004013030A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005092761A3 (fr) * 2004-03-02 2006-01-05 Thyssen Elevator Capital Corp Procede et dispositif permettant d'obtenir un systeme de cablage simplifie pour des ascenseurs
DE102004030362A1 (de) * 2004-06-23 2006-02-16 Euchner Gmbh + Co. Kg Vorrichtung zum gesteuerten Arretieren einer sicherheitsrelevanten Einrichtung, wie beispielweise einer Schutztür oder dergleichen
EP1795486A4 (fr) * 2004-09-27 2011-08-10 Mitsubishi Electric Corp Dispositif d"encliquetage pour ascenseur
US9695015B1 (en) * 2005-12-28 2017-07-04 James Marinelli Elevator door safety lock system
CN110569934A (zh) * 2019-09-03 2019-12-13 菱电电梯有限公司 一种电梯底坑进水监测方法
EP3608279A1 (fr) * 2018-08-10 2020-02-12 Otis Elevator Company Dispositif et procédé de surveillance du mouvement d'une porte d'ascenseur à l'aide de rfid
US20200324999A1 (en) * 2019-04-15 2020-10-15 Otis Elevator Company Elevator systems
US11535488B2 (en) 2017-08-28 2022-12-27 Otis Elevator Company Elevator position detection systems

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006285863A (ja) * 2005-04-04 2006-10-19 Matsushita Electric Works Ltd 戸締まり監視装置
FI123145B (fi) 2012-01-23 2012-11-30 Kone Corp Menetelmä ja järjestely kuljetusjärjestelmän toimintakunnon valvomiseksi
CN103886275A (zh) * 2012-12-19 2014-06-25 航天信息股份有限公司 识别射频电子标签数据的方法和装置
JP6201897B2 (ja) * 2014-06-02 2017-09-27 三菱電機株式会社 エレベータの制御システム
CN104876082B (zh) * 2015-05-29 2018-06-22 珠海市交通物联网有限公司 电梯监控系统及方法
CN106933253A (zh) * 2016-06-12 2017-07-07 李晨天 基于rfid技术的可识别限位点的限位开关
CN107742135A (zh) * 2016-06-28 2018-02-27 国网冀北电力有限公司物资分公司 一种箱式批量射频识别系统及方法
ES2886612T3 (es) * 2017-05-09 2021-12-20 Kone Corp Disposición de comunicación de datos de ascensor

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4742893A (en) * 1986-05-03 1988-05-10 Elevator Gmbh Signalling procedure for a lift and a signalling system
US5749443A (en) * 1995-05-12 1998-05-12 Otis Elevator Company Elevator based security system
US5832365A (en) * 1996-09-30 1998-11-03 Lucent Technologies Inc. Communication system comprising an active-antenna repeater
US6446761B1 (en) * 1999-11-26 2002-09-10 Hitachi, Ltd. Elevator system having wireless transmitting/receiving units

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE50111416D1 (de) * 2000-08-07 2006-12-21 Inventio Ag Überwachungseinrichtung für einen aufzug
ATE362894T1 (de) 2002-03-27 2007-06-15 Inventio Ag Schachtüberwachungssystem für aufzug

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4742893A (en) * 1986-05-03 1988-05-10 Elevator Gmbh Signalling procedure for a lift and a signalling system
US5749443A (en) * 1995-05-12 1998-05-12 Otis Elevator Company Elevator based security system
US5832365A (en) * 1996-09-30 1998-11-03 Lucent Technologies Inc. Communication system comprising an active-antenna repeater
US6446761B1 (en) * 1999-11-26 2002-09-10 Hitachi, Ltd. Elevator system having wireless transmitting/receiving units

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP1539630A1 *

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005092761A3 (fr) * 2004-03-02 2006-01-05 Thyssen Elevator Capital Corp Procede et dispositif permettant d'obtenir un systeme de cablage simplifie pour des ascenseurs
US7334665B2 (en) 2004-03-02 2008-02-26 Thyssenkrupp Elevator Capital Corporation Interlock wiring communication system for elevators
DE102004030362A1 (de) * 2004-06-23 2006-02-16 Euchner Gmbh + Co. Kg Vorrichtung zum gesteuerten Arretieren einer sicherheitsrelevanten Einrichtung, wie beispielweise einer Schutztür oder dergleichen
DE102004030362B4 (de) * 2004-06-23 2011-07-07 EUCHNER GmbH + Co. KG, 70771 Vorrichtung zum gesteuerten Arretieren einer sicherheitsrelevanten Einrichtung, wie beispielweise einer Schutztür oder dergleichen
EP1795486A4 (fr) * 2004-09-27 2011-08-10 Mitsubishi Electric Corp Dispositif d"encliquetage pour ascenseur
US9695015B1 (en) * 2005-12-28 2017-07-04 James Marinelli Elevator door safety lock system
US11535488B2 (en) 2017-08-28 2022-12-27 Otis Elevator Company Elevator position detection systems
EP3608279A1 (fr) * 2018-08-10 2020-02-12 Otis Elevator Company Dispositif et procédé de surveillance du mouvement d'une porte d'ascenseur à l'aide de rfid
US20200324999A1 (en) * 2019-04-15 2020-10-15 Otis Elevator Company Elevator systems
US11673767B2 (en) * 2019-04-15 2023-06-13 Otis Elevator Company Elevator systems
CN110569934A (zh) * 2019-09-03 2019-12-13 菱电电梯有限公司 一种电梯底坑进水监测方法

Also Published As

Publication number Publication date
BR0215827A (pt) 2005-06-07
BR0215827B1 (pt) 2011-02-22
HK1077798A1 (zh) 2006-02-24
CN100519390C (zh) 2009-07-29
CN1642840A (zh) 2005-07-20
JP2005534591A (ja) 2005-11-17
EP1539630B1 (fr) 2011-03-09
ES2359630T3 (es) 2011-05-25
EP1539630A4 (fr) 2009-02-25
JP4205057B2 (ja) 2009-01-07
DE60239427D1 (de) 2011-04-21
AU2002326490A1 (en) 2004-02-23
EP1539630A1 (fr) 2005-06-15

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