WO2004033352A9 - Systeme a communication sans fil, fournissant une information de la position d'une cabine d'ascenseur - Google Patents

Systeme a communication sans fil, fournissant une information de la position d'une cabine d'ascenseur

Info

Publication number
WO2004033352A9
WO2004033352A9 PCT/US2002/032188 US0232188W WO2004033352A9 WO 2004033352 A9 WO2004033352 A9 WO 2004033352A9 US 0232188 W US0232188 W US 0232188W WO 2004033352 A9 WO2004033352 A9 WO 2004033352A9
Authority
WO
WIPO (PCT)
Prior art keywords
signal
hoistway
transceiver
locating
communicating portion
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/US2002/032188
Other languages
English (en)
Other versions
WO2004033352A1 (fr
Inventor
Jae-Hyuk Oh
Alan M Finn
Pei-Yuan Peng
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 HK06102019.7A priority Critical patent/HK1081934B/xx
Priority to US10/524,385 priority patent/US7077244B2/en
Priority to CNB028297296A priority patent/CN100391820C/zh
Priority to AU2002368168A priority patent/AU2002368168A1/en
Priority to PCT/US2002/032188 priority patent/WO2004033352A1/fr
Priority to JP2004542985A priority patent/JP2006502064A/ja
Publication of WO2004033352A1 publication Critical patent/WO2004033352A1/fr
Anticipated expiration legal-status Critical
Publication of WO2004033352A9 publication Critical patent/WO2004033352A9/fr
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
    • 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

Definitions

  • Elevator systems typically include a cab that moves within a hoistway between landings or different levels in a building, for example.
  • a controller causes a machine to operate to move the elevator cab into a desired position in the hoistway, depending on the needs of a particular situation. Moving the cab accurately to a landing requires determining position information. Additionally, it is necessary to be able to determine the location of the cab within the hoistway at any time without having to move the cab to make the determination.
  • a variety of arrangements have been proposed or implemented for making elevator cab position determinations.
  • this invention is a wireless communication arrangement for determining the position of an elevator cab within a hoistway.
  • a first communicator portion is supported on the elevator cab.
  • a second communicator portion is supported at a selected position in the hoistway.
  • a plurality of second communicating portions are strategically placed along the hoistway.
  • Wireless communication indicating distances between the communicating portions provides information regarding the position of the elevator cab within the hoistway.
  • the first communicating portion comprises a first transceiver that is supported on the elevator cab.
  • the first transceiver generates a trigger signal.
  • the second communication portion comprises a second transceiver supported at a selected known position relative to the hoistway.
  • the second transceiver generates a locating signal responsive to the trigger signal.
  • the first transceiver receives the locating signal.
  • a controller determines the location of the cab in the hoistway based upon a characteristic of the received locating signal.
  • the trigger signal is a radio frequency signal while the locating signal is an ultrasound signal.
  • the time it takes for the ultrasound signal to be received by the first transceiver is the characteristic used to determine the location of the cab in the hoistway.
  • the distance between the first and second transceivers and the known features of the ultrasound locating signal provide the relationship between the timing of the ultrasound signal receipt and the position of the elevator cab.
  • the first transceiver portion wirelessly communicates with a remotely located controller that makes the position determination.
  • the first transceiver is hard wired to a controller that is programmed to make the position determination.
  • every landing along the hoistway has a door frame that supports a corresponding second transceiver.
  • the second transceivers can be installed into the door frames prior to being delivered to the building site. In this manner, the position of the second transceivers relative to the hoistway can be economically and accurately controlled.
  • Figure 1 schematically illustrates an elevator system including a position determining arrangement designed according to this invention.
  • Figure 2 schematically illustrates two communicating portions and wireless communication between them in an example system designed according to this invention.
  • FIG. 1 schematically shows an elevator system 20 where an elevator cab 22 moves within a hoistway 24 in a conventional manner.
  • the cab 22 preferably moves to various landings 26, 28 and 30 to allow transporting passengers or cargo between different levels within a building, for example.
  • a controller 32 controls a machine (not illustrated) that causes the desired movement of the elevator cab 22 within the hoistway 24.
  • the cab 22 is supported within the hoistway 24 in a known manner using known components (not illustrated).
  • the controller 32 determines the location of the cab 22 within the hoistway 24 based upon information gathered by a first wireless communicating portion 40 that is supported for movement with the cab 22.
  • the illustrated example schematically shows the communicating portion 40 mounted to the cab. Other locations, such as on associated brackets or cab-supporting structural members can be used.
  • a plurality of second communicating portions 42 are supported at selected positions along the hoistway 24 to provide cab position information as will be described below.
  • each second communicating portion 42 is supported on a door frame 36 that comprises known components.
  • One advantage of the inventive system is that the second communicating portions 42 can be installed into the door frames that are premade prior to being delivered to the building site where the elevator system 20 is installed. By previously installing the second communicating portions 42 in this manner, a variety of system economies can be realized. For example, the inventive arrangement does not require any hoistway modification or any special installation at the site where the elevator system is installed.
  • the first communicating portion 40 can be preinstalled on the cab and the second communicating portions 42 can be preinstalled on the door frames.
  • the first communicating portion 40 is associated with an onboard module 44 on the elevator cab 22.
  • a connection 46 is schematically shown in Figure 1 to denote a power connection, communicating connection or both.
  • the first communicating portion 40 is hardwired to the module 44 to receive power.
  • communicating the signals indicating elevator cab position is also accomplished over a hardwire connection.
  • communications between the first communicating portion 40 and the onboard module 44 are wireless.
  • the onboard module 44 is coupled through a conventional wire arrangement
  • the first communicating portion 40 comprises a transceiver that has a transmitter portion 50.
  • the transmitter portion 50 generates a radio frequency commumcation signal 52 that is sent to the second communicating portion 42.
  • the radio frequency signal 52 has a first component 54 that is received by a power generator portion 56 of the second communicating portion 42.
  • the power generator portion 56 preferably includes known components that receive the radio frequency signal and convert that into useable energy.
  • the second communicating portion 42 is powered by batteries, building power (hard-wired) or a combination of such known power sources.
  • a second component of the radio frequency signal 52 is a trigger signal 58 that is received by a trigger portion 60.
  • the transmitter portion 50 generates the trigger signal 58 so that the second communicating portions 42 that are within a selected range of the cab 22 generate a locating signal responsive to the trigger signal 58.
  • the example implementation of the inventive system limits the power consumption and signal generation from the second communicating portions 42 to only those that are within a selected vicinity of the elevator cab 22, which makes the example arrangement more efficient.
  • the trigger portion 60 preferably causes a transmitter portion 62 of the second communicating portion 42 to generate a locating signal 64 that is received by a receiver portion 66 of the first communicating portion 40.
  • each second communicating portion 42 has a unique identifier and the locating signal 64 preferably includes information corresponding to the identification of the component sending the signal.
  • the second communicating portion 42A has a different identifier than that associated with 42B or 42C.
  • a sufficiently large set of identifiers preferably is selected to ensure uniqueness.
  • the transmitter portion 62 sends multiple locating signals responsive to each trigger signal. In this example, the locating signals are combined to make the position determination.
  • the currently preferred embodiment includes an ultrasound transmitter as the transmitter portion 62.
  • the locating signal 64 is an ultrasound signal that propagates at a known speed within the hoistway. Based upon the timing between the trigger signal 58 and the receipt of the locating signal by the receiver portion 66, the position of the first commumcating portion 40 relative to the appropriate second communicating portion 42 can be determined. This position information also provides the position of the cab 22 within the hoistway because the location of the first communicating portion 40 onboard the cab 22 is known relative to the structure of the cab. In one example, additional system parameters such as cab velocity and local temperature are estimated from the locating signals 64 to improve the accuracy of the determined cab position.
  • Ultrasound is the preferred option because it is believed to provide the most accurate position determination.
  • Other example types of electromagnetic energy may be used in a system designed according to this invention such as radio frequency signals, microwave signals, infrared signals, ultraviolet or visible light transmissions.
  • Those skilled in the art who have the benefit of this description will be able to select the type of signals and modulation strategy that will work best for their particular situation.
  • position information can be continuously determined by the controller 32 as needed.
  • one second communicating portion 42 is associated with each landing along the hoistway. Spacing the second communicating portions in this manner provides a distance of approximately 3.5 meters between the second communicating portions. This provides certain advantages such as limiting the power consumption of the ultrasonic transmitters 62.
  • the amount of jamming among ultrasonic waves is reduced because only a few of the second communicating portions 42 are triggered at any given time.
  • Another advantage is that time delay associated with the ultrasonic wave transmission is reduced and in one example system is less than 10 milliseconds.
  • a higher position update rate is achievable as the cab 22 approaches each leveling zone (i.e., landing) because the time delay (associated with the distance between the communicating portions 40 and 42) become smaller.
  • Strategically placing the second communicating portions 42 along the hoistway allows resolution within one millimeter in a system designed according to this invention. For example, a 1/340 millisecond resolution timer, which is inexpensively commercially available, permits the inventive system to calculate the distance of wave travel and, therefore, the elevator cab position very precisely.
  • the inventive arrangement is useful for any of a variety of types of elevator systems.
  • the wireless communication arrangement of this invention further provides better accuracy throughout the hoistway, a higher position update rate as the cab approaches a landing location and continuously provides elevator cab position information to the controller as needed.
  • the cab 22 can be run through the hoistway with the controller 32 in a learning mode so that the location and identification of each second communicating portion 42 can be verified. After a single learning mode pass, the controller 32 is then capable of making as many position determinations as is required to achieve the desired elevator system operation.

Landscapes

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

Abstract

Un système d'ascenseur (20) comprend des portions de communication sans fil (40, 42a-42c) qui communiquent entre elles afin de fournir une information sur la position d'une cabine d'ascenseur (22) à l'intérieur d'un puits (24). Suivant un exemple d'exécution, une première portion de communication (40) prend appui sur la cabine d'ascenseur (22) qui génère un signal de déclenchement, lequel est reçu par la seconde portion de communication (42a-42c) en un emplacement sélectionné le long du puits (24). La seconde portion de communication (42a-42c) génère un signal ultrasonore qui est reçu par la première portion de communication (40). Une caractéristique du signal de positionnement, par exemple, le temps s'écoulant entre le signal de déclenchement et la réception du signal de positionnement, fournit une information sur la position de la cabine à l'intérieur du puits.
PCT/US2002/032188 2002-10-08 2002-10-08 Systeme a communication sans fil, fournissant une information de la position d'une cabine d'ascenseur Ceased WO2004033352A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
HK06102019.7A HK1081934B (en) 2002-10-08 System and method for determining a position of an elevator cab and elevator system
US10/524,385 US7077244B2 (en) 2002-10-08 2002-10-08 Elevator cab locating system including wireless communication
CNB028297296A CN100391820C (zh) 2002-10-08 2002-10-08 用于确定电梯轿厢的位置的系统和方法以及电梯系统
AU2002368168A AU2002368168A1 (en) 2002-10-08 2002-10-08 Elevator cab locating system including wireless communication
PCT/US2002/032188 WO2004033352A1 (fr) 2002-10-08 2002-10-08 Systeme a communication sans fil, fournissant une information de la position d'une cabine d'ascenseur
JP2004542985A JP2006502064A (ja) 2002-10-08 2002-10-08 ワイヤレス通信を含むエレベーターかごの位置検出システム

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2002/032188 WO2004033352A1 (fr) 2002-10-08 2002-10-08 Systeme a communication sans fil, fournissant une information de la position d'une cabine d'ascenseur

Publications (2)

Publication Number Publication Date
WO2004033352A1 WO2004033352A1 (fr) 2004-04-22
WO2004033352A9 true WO2004033352A9 (fr) 2005-06-02

Family

ID=32092088

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2002/032188 Ceased WO2004033352A1 (fr) 2002-10-08 2002-10-08 Systeme a communication sans fil, fournissant une information de la position d'une cabine d'ascenseur

Country Status (4)

Country Link
JP (1) JP2006502064A (fr)
CN (1) CN100391820C (fr)
AU (1) AU2002368168A1 (fr)
WO (1) WO2004033352A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4940895B2 (ja) * 2006-10-31 2012-05-30 株式会社日立製作所 エレベーター
US11535488B2 (en) 2017-08-28 2022-12-27 Otis Elevator Company Elevator position detection systems

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4375057A (en) * 1980-12-10 1983-02-22 Otis Elevator Company Position sensor
DE3663792D1 (en) * 1985-08-22 1989-07-13 Inventio Ag Obstacle recognition device for automatic doors
US5306882A (en) * 1991-05-13 1994-04-26 Otis Elevator Company Measuring elevator hoistway position using audible signals
DE4426793C1 (de) * 1994-07-28 1995-10-26 Schmersal K A Gmbh & Co Einrichtung zur Positionserfassung
US5883345A (en) * 1997-12-23 1999-03-16 Otis Elevator Company Sonic position measurement system
JPH11314868A (ja) * 1998-04-28 1999-11-16 Toshiba Elevator Co Ltd 昇降機のかご荷重検出装置

Also Published As

Publication number Publication date
CN100391820C (zh) 2008-06-04
WO2004033352A1 (fr) 2004-04-22
HK1081934A1 (zh) 2006-05-26
CN1684895A (zh) 2005-10-19
AU2002368168A1 (en) 2004-05-04
JP2006502064A (ja) 2006-01-19

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