WO2006009547A1 - Elevator door position detection - Google Patents
Elevator door position detection Download PDFInfo
- Publication number
- WO2006009547A1 WO2006009547A1 PCT/US2004/019930 US2004019930W WO2006009547A1 WO 2006009547 A1 WO2006009547 A1 WO 2006009547A1 US 2004019930 W US2004019930 W US 2004019930W WO 2006009547 A1 WO2006009547 A1 WO 2006009547A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- encoder
- door
- indication
- assembly
- door position
- Prior art date
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
- B66B13/02—Door or gate operation
- B66B13/14—Control systems or devices
- B66B13/143—Control systems or devices electrical
Definitions
- This invention generally relates to elevator systems. More particularly, this invention relates to a door position detector arrangement for use in elevatpr systems.
- Elevator systems typically include a car that moves between different levels within a hoistway, for example.
- the elevator system may be a hydraulic arrangement or may include a car and counterweight suspended by roping. Regardless of the type of powering arrangement, various controls are required to ensure the safety of passengers and those in the vicinity of the hoistway.
- the traditional arrangement for detecting whether the elevator doors are closed includes a gate switch.
- gate switch There are a variety of gate switch configurations.
- One example includes a contact switch where a pin (typically associated with one door) is received in a corresponding hole (typically associated with another door). If the switch does not provide an indication that the doors are fully closed, the car is not allowed to move through the hoistway.
- the mechanical arrangement of many gate switches introduces the possibility for maintenance problems associated with the gate switch. This results in call backs and added maintenance expense for some elevator system configurations.
- Typical elevator door systems also include motor control components for operating a motor of a door mover.
- control switches are associated with the door mover to provide indications of open and closed positions to control acceleration or deceleration of the motor, for example.
- Other example arrangements include incremental encoders that provide an indication of a distance moved by an elevator door.
- control switches or incremental encoders do not provide an absolute position indication.
- the resolution of such devices is not considered sufficient enough to provide a reliable indication of a fully closed door.
- An example disclosed assembly for controlling selected elevator system components includes an encoder that provides an absolute indication of a current position of an elevator car door.
- the encoder detects a position of at least a portion of a motor that causes selective movement of the door.
- the encoder comprises an absolute encoder.
- the encoder detects the position of at least one feature of the car door for providing the position indication.
- the encoder comprises a linear encoder.
- an elevator car movement controller utilizes the encoder fully closed door position indication for controlling movement of an elevator car.
- Figure 1 schematically illustrates selected portions of an elevator system incorporating a door position detecting arrangement designed according to an embodiment of this invention.
- Figure 2 schematically illustrates selected portions of another example embodiment.
- FIG. 1 schematically shows selected portions of an elevator system 20.
- An elevator car 22 travels along guide rails 24 supported in a hoistway in a conventional manner, for example.
- Elevator car doors 30 are supported for moving with the car 22 throughout the hoistway and for moving between open and closed positions as known.
- the example embodiment includes at least one vane 32 supported on the car doors 30 for interlocking the car doors with hoistway doors when the elevator car is appropriately positioned at a landing, for example.
- the car doors 30 move responsive to a door mover 34 that includes a motor 36.
- the motor 36 comprises a known electrical motor.
- the door mover 34 operates in a generally known manner to move the doors 30 between open and closed positions.
- an encoder 38 is associated with the motor 36 for determining a position of at least one portion of the motor 36.
- the encoder 38 is associated with a rotating shaft of the motor 36 such that the encoder 38 provides an absolute indication of the position of the car doors 30.
- selecting the known fully open or known fully closed position as a reference point for the encoder 38 allows the encoder to make an absolute determination of a current position of the car doors 30 at any time based upon the amount of movement of the associated portion of the motor 36. Given that the motor parameters and the dimensions associated with door movement are known (or can be determined), the encoder 38 output provides an absolute indication of door position based upon the relationships between motor movement and door movement.
- the encoder 38 comprises an absolute encoder.
- absolute encoders are known and those skilled in the art who have the benefit of this description will be able to select from among known absolute encoders to meet the needs of their particular situation.
- the absolute encoder provides a door position indication with an accuracy of approximately one millimeter. In one example, an accuracy tolerance within the range from about .5 millimeters to about 5 millimeters is acceptable.
- the encoder 38 provides a signal to a controller 40 that is responsible for controlling the elevator machine 42, which causes the car 22 to move along the guide rails 24.
- the controller 40 utilizes the encoder door position indication for purposes of controlling whether the car 22 can move, which is permitted only when the doors are in a fully closed position, for example.
- no separate gate switch is required. This example provides significant cost savings in materials, labor and maintenance compared to arrangements that require a separate gate switch.
- Figure 2 schematically illustrates another example arrangement where an encoder 38' detects the position of the doors 30 directly rather than detecting a position of a portion of the motor 36 (as was the case in the embodiment of Figure 1).
- a hanger portion 50 of the doors 30 rides along a track 52 as the doors move between the open and closed positions.
- the encoder 38' is positioned to detect at least one feature of the doors 30 in the fully closed position in this example.
- the encoder 38' preferably is arranged relative to the doors 30 to provide a current door position indication at all positions along the entire travel of the doors between the fully open and fully closed positions.
- the encoder 38' comprises a known linear encoder.
- the door position indication from the encoder 38' can be used for controlling the motor 36 such as accelerating or decelerating the motor near the ends of door travel. Additionally, the door position indication from the encoder 38' provides a signal to a controller 40 that operates the machine 42 for moving the elevator car.
- the example of Figure 2 allows for having an encoder provide an absolute indication of a fully closed door position that is useful for controlling car movement in addition to being useful for controlling door mover operation.
- the disclosed example embodiments demonstrate how an encoder that provides an absolute door position indication allows for eliminating a separate gate switch, which provides an improved, more economical arrangement.
Landscapes
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Elevator Door Apparatuses (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/570,886 US20080271956A1 (en) | 2004-06-22 | 2004-06-22 | Elevator Door Position Detection |
AU2004321717A AU2004321717B2 (en) | 2004-06-22 | 2004-06-22 | Elevator door position detection |
JP2007518015A JP2008503422A (en) | 2004-06-22 | 2004-06-22 | Elevator door position detection |
CNA2004800433977A CN1972859A (en) | 2004-06-22 | 2004-06-22 | Elevator door position detection |
EP04755833A EP1765713A4 (en) | 2004-06-22 | 2004-06-22 | Elevator door position detection |
PCT/US2004/019930 WO2006009547A1 (en) | 2004-06-22 | 2004-06-22 | Elevator door position detection |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/US2004/019930 WO2006009547A1 (en) | 2004-06-22 | 2004-06-22 | Elevator door position detection |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006009547A1 true WO2006009547A1 (en) | 2006-01-26 |
Family
ID=35785533
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2004/019930 WO2006009547A1 (en) | 2004-06-22 | 2004-06-22 | Elevator door position detection |
Country Status (6)
Country | Link |
---|---|
US (1) | US20080271956A1 (en) |
EP (1) | EP1765713A4 (en) |
JP (1) | JP2008503422A (en) |
CN (1) | CN1972859A (en) |
AU (1) | AU2004321717B2 (en) |
WO (1) | WO2006009547A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7650970B2 (en) | 2004-09-27 | 2010-01-26 | Otis Elevator Company | Elevator door lock sensor device including proximity sensor elements in a selected geometric pattern |
US7823699B2 (en) | 2004-07-06 | 2010-11-02 | Otis Elevator Company | Electromagnetically operated elevator door lock |
US8260210B2 (en) | 2009-01-30 | 2012-09-04 | Vodafone Group Plc | Detecting interference in a wireless communication system |
EP2603693B1 (en) | 2010-08-13 | 2016-04-13 | Wobben Properties GmbH | Working platform and lift for wind turbine |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2734798T3 (en) * | 2015-03-18 | 2019-12-12 | Otis Elevator Co | System and procedure to control an elevator car |
US10089798B2 (en) | 2016-10-28 | 2018-10-02 | Fca Us Llc | Vehicle with variable position ajar sensor |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03102091A (en) * | 1989-09-18 | 1991-04-26 | Mitsubishi Electric Corp | Door control device for elevator |
US6495821B1 (en) * | 1999-02-17 | 2002-12-17 | The Chamberlain Group, Inc. | Method and apparatus for determining a position of a movable barrier |
US20040055829A1 (en) * | 2002-09-23 | 2004-03-25 | Morris Nigel Bruce | Tubular linear synchronous motor door and encoder-less control |
Family Cites Families (32)
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US1344430A (en) * | 1919-04-02 | 1920-06-22 | William J Wigmore | Electromagnetic elevator-door lock |
US3554326A (en) * | 1969-03-07 | 1971-01-12 | Montgomery Elevator Co | Elevator door control |
US3638762A (en) * | 1969-08-11 | 1972-02-01 | Otis Elevator Co | Door-coupling apparatus for elevators |
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US4410067A (en) * | 1981-09-30 | 1983-10-18 | Otis Elevator Company | Elevator door operator |
JPH0641358B2 (en) * | 1985-03-28 | 1994-06-01 | 株式会社東芝 | Elevator device |
JPS6422791A (en) * | 1987-07-18 | 1989-01-25 | Mitsubishi Electric Corp | Door locking device for elevator |
US4898263A (en) * | 1988-09-12 | 1990-02-06 | Montgomery Elevator Company | Elevator self-diagnostic control system |
JPH03256992A (en) * | 1990-03-01 | 1991-11-15 | Mitsubishi Electric Corp | Door controller for elevator |
JPH03297786A (en) * | 1990-04-18 | 1991-12-27 | Mitsubishi Electric Corp | Cage door device for elevator |
US5174417A (en) * | 1991-02-07 | 1992-12-29 | Inventio Ag | Device and method for the actuating and unlatching of the shaft doors of an elevator |
CA2067594C (en) * | 1991-05-10 | 1997-02-25 | Daniel J. Flanagan | Transit car power door obstruction sensing system and device |
US5587566A (en) * | 1994-04-29 | 1996-12-24 | Otis Elevator Company | Method for adjusting an elevator door |
US5476157A (en) * | 1994-06-03 | 1995-12-19 | Todaro; Sam S. | Elevator control system with elevator hoistway operation monitoring system and method |
US5730254A (en) * | 1995-07-21 | 1998-03-24 | Vertisys, Inc. | Elevator door restraint device |
US5819877A (en) * | 1996-04-10 | 1998-10-13 | Otis Elevator Company | Elevator evacuation deterrent device |
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US5711112A (en) * | 1996-09-03 | 1998-01-27 | Otis Elevator Company | Double-drive automatic sliding door operator |
DE59710778D1 (en) * | 1996-10-29 | 2003-10-30 | Inventio Ag | Device for opening and closing a car door and a landing door of an elevator system |
US5881844A (en) * | 1996-11-07 | 1999-03-16 | Otis Elevator Company | Secondary positioning system for elevator car doors |
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US6137255A (en) * | 1999-07-30 | 2000-10-24 | Otis Elevator Company | Apparatus and method of controlling a linear motor door operator |
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-
2004
- 2004-06-22 CN CNA2004800433977A patent/CN1972859A/en active Pending
- 2004-06-22 AU AU2004321717A patent/AU2004321717B2/en not_active Ceased
- 2004-06-22 WO PCT/US2004/019930 patent/WO2006009547A1/en active Search and Examination
- 2004-06-22 EP EP04755833A patent/EP1765713A4/en not_active Withdrawn
- 2004-06-22 US US11/570,886 patent/US20080271956A1/en not_active Abandoned
- 2004-06-22 JP JP2007518015A patent/JP2008503422A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03102091A (en) * | 1989-09-18 | 1991-04-26 | Mitsubishi Electric Corp | Door control device for elevator |
US6495821B1 (en) * | 1999-02-17 | 2002-12-17 | The Chamberlain Group, Inc. | Method and apparatus for determining a position of a movable barrier |
US20040055829A1 (en) * | 2002-09-23 | 2004-03-25 | Morris Nigel Bruce | Tubular linear synchronous motor door and encoder-less control |
Non-Patent Citations (1)
Title |
---|
See also references of EP1765713A4 * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7823699B2 (en) | 2004-07-06 | 2010-11-02 | Otis Elevator Company | Electromagnetically operated elevator door lock |
US7650970B2 (en) | 2004-09-27 | 2010-01-26 | Otis Elevator Company | Elevator door lock sensor device including proximity sensor elements in a selected geometric pattern |
US8260210B2 (en) | 2009-01-30 | 2012-09-04 | Vodafone Group Plc | Detecting interference in a wireless communication system |
EP2603693B1 (en) | 2010-08-13 | 2016-04-13 | Wobben Properties GmbH | Working platform and lift for wind turbine |
Also Published As
Publication number | Publication date |
---|---|
JP2008503422A (en) | 2008-02-07 |
EP1765713A1 (en) | 2007-03-28 |
US20080271956A1 (en) | 2008-11-06 |
AU2004321717B2 (en) | 2008-01-31 |
EP1765713A4 (en) | 2010-03-03 |
CN1972859A (en) | 2007-05-30 |
AU2004321717A1 (en) | 2006-01-26 |
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