EP2546181A1 - Elevator installation and method for detecting the elevator car position. - Google Patents
Elevator installation and method for detecting the elevator car position. Download PDFInfo
- Publication number
- EP2546181A1 EP2546181A1 EP11173791A EP11173791A EP2546181A1 EP 2546181 A1 EP2546181 A1 EP 2546181A1 EP 11173791 A EP11173791 A EP 11173791A EP 11173791 A EP11173791 A EP 11173791A EP 2546181 A1 EP2546181 A1 EP 2546181A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- shaft
- information
- elevator
- coding
- elevator car
- 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- Withdrawn
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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
- B66B1/3492—Position or motion detectors or driving means for the detector
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B7/00—Other common features of elevators
- B66B7/06—Arrangements of ropes or cables
- B66B7/064—Power supply or signal cables
Definitions
- the invention relates to an elevator with shaft equipment and an information device comprising at least one reading unit and at least one coding for generating shaft information for moving an elevator car and / or a counterweight in the elevator shaft, wherein the arranged on the shaft equipment, readable by means of the reading unit encoding information for generating provides the shaft information.
- a device for generating shaft information in a lift shaft has become known.
- An over the shaft height extending band serves as a carrier for coding.
- At least one reading unit is arranged on an elevator car which can be moved in the elevator shaft and reads the coding when the tape is passed over.
- the reading unit generates therefrom a signal which images the position of the elevator car in the elevator shaft and which is relayed by means of a suspension cable to the elevator control.
- the assembly of the tape is laborious in terms of material and working hours and requires additional space in the elevator shaft.
- the invention as characterized in claim 1, solves the problem of providing an information device that can be mounted in a lift shaft without additional effort.
- the advantages achieved by the invention are essentially to be seen in the fact that the information system can be built without additional working hours and without additional material, except for a reading unit, and that the information system requires no additional space in the elevator shaft.
- the coding necessary for the generation of information can already be attached to a hanging cable at the factory or on site.
- the hanging cable carries energy and signals to the elevator car and signals from the elevator car to the elevator control and also serves as a carrier for the coding for information generation.
- the information device When the information device is put into operation, a learning run is carried out and the hanging cable or the coding is read in by means of a reading unit arranged on the elevator car and the information obtained thereby is stored. If the coding is dirty or damaged in the course of operation, the information device can reconstruct the failed coding by means of the stored information and, for example, issue an error message or a maintenance message.
- the elevator car moves up and down, wherein in each case the overrun hanging cable or the overrun coding on the suspension cable is detected by means of a reading unit and the position of the elevator car is determined. With the information device and with the coding also monitoring functions can be performed.
- the coding may be, for example, information concerning the overspeed of the elevator car or information concerning the deviation of the elevator car from the floor level at floor stop or information regarding passing over the shaft end, etc.
- Fig. 1 shows a movable in an elevator shaft 1 elevator car 2.
- the elevator car 2 is guided along guide rails, not shown.
- a suspension cable 3 carries energy and signals to the elevator car 2 and signals from the elevator car 2 to an elevator control 2.1.
- the hanging cable 3 consists of a flat, band-like jacket, which encloses a plurality of juxtaposed electrical conductors.
- Suspension cables to which a coding can be attached are also possible, for example a cable with a semicircular cross-section.
- An information device 4 generates shaft information which is used by a control device for controlling the car movement and the car position and / or the counterweight movement and / or the counterweight position.
- the shaft information includes, for example, the speed and / or the position in the elevator shaft 1 of the elevator car 2 and / or a counterweight.
- the information device 4 consists of at least one reading unit 5 and of at least one coding 6 arranged on the hanging cable 3, as described in US Pat Fig. 2 is shown.
- the hanging cable 3 is fixed at one end to a fixed point 7 and the other end to the elevator car 2.
- the hanging cable 3 is guided by means arranged on the elevator car 2 guide means 8. When moving the elevator car 2, the hanging cable 3 or the coding 6 moves quietly, with stable sides and at a constant distance past the reading unit 5.
- Fig. 2 shows the arranged on the hanging cable 3 coding 6.
- the coding 6 consists of two-dimensional code patterns 2D, which are arranged in a first track 9 and in a second track 10.
- the coding 6 may, for example, be glued on the hanging cable 3 or printed or lasered.
- Fig. 3 shows details of in Fig. 2
- Each code pattern consists of a checkered array of fields, each field depending on the information content of the code pattern black or white.
- the reading unit 5 can recognize the image of black and white fields and determine the information content therefrom.
- a first code pattern on the hanging cable 3 is denoted by a 1 , for example, the lowest code pattern on the hanging cable 3 when the elevator car 2 has slightly crossed the bottom floor down.
- a second last code pattern is denoted by a n-1 , for example, a second-highest code pattern of the hanging cable 3 and a last code pattern is denoted by an, for example, a top code pattern of the hanging cable 3, when the elevator car 2 has slightly over the top floor up.
- the code patterns a 1 to are different because each code pattern has a different information content.
- the code patterns may also contain door positions.
- the code patterns between the lowermost code pattern a 1 and the uppermost code pattern are arranged at a certain distance DS to the adjacent code pattern on the hanging cable 3 and contain at least one piece of information about the respective position of the code pattern a 1 ... or form an over the guideway Elevator car 2 reaching, readable scale in code form.
- the information on the position of the code pattern can also be contained twice in each code pattern a 1 ..., once for the travel of the elevator car 2 upwards and once for the travel of the elevator car 2 downwards.
- Fig. 4 shows an embodiment of a coding 6 with one-dimensional code patterns 1D. Each code pattern exists from a readable barcode. The comments on the code patterns of Fig. 3 also apply to the code patterns of Fig. 4 ,
- An encoding 6 with only one track is also possible. Some redundancy is nevertheless given because the reading unit 5 simultaneously has more than one code pattern in focus. If a code pattern is dirty or damaged or otherwise illegible, the information content of the unreadable code pattern can be reconstructed from the adjacent code patterns. In addition, an error message or a maintenance message can be generated and issued.
- the cabin-side length of the suspension cable 3 is large and the shaft wall-side length of the suspension cable is small. If the elevator car 2 is located below in the elevator shaft 1, the cabin-side length of the suspension cable 3 is small and the shaft wall-side length of the suspension cable is large.
- the length of the suspension cable 3, and thus the length of the suspension cable 3, at which the reading unit 5 reads the coding 6, changes depending on the position of the elevator car 2. Depending on the length of the suspension cable 3 on the shaft wall side, this suspension cable section expands more or less, which directly affects the positional accuracy of Encoding 6. However, the influence of the elongation on the positional accuracy is low.
- the deviation is about 2.5 mm.
- the deviation is independent of the cabin load and can be measured, for example, during a learning run in relation to the door position of the lowermost landing door.
- the influence of stretching on The measurement accuracy can also be corrected by adding a calculated change in length to the measured position.
- Fig. 5 shows details of the guide means 8 for guiding the hanging cable 3 in the movement of the elevator car 2.
- the guide device 8 is arranged on the elevator car 2 in the vicinity of the reading unit 5.
- the free hanging cable 3 or the coding 6 moves quietly, with stable sides and at a constant distance past the reading unit 5.
- An arranged on the elevator car 2 guide shoe 11 leads with a first free leg 11.1 and a second free leg 11.2 the hanging cable 3 to the reading unit 5 over.
- the guide shoe 11 according Fig. 5 can also be used if the hanging cable 3 is connected in the middle of the elevator shaft 1 at a second fixed point 12, for example with a shaft wall 13.
- the hanging cable 3 fits into a arranged on the shaft wall 13 profile 14 and is held by a moored to the profile 14 holder 15 on the profile 14.
- the holder 15 may, for example, be a bracket that fits between two code patterns or a transparent cover that fits on the profile 14.
- Fig. 7 shows a guide device 8, in which the hanging cable 3 over the entire shaft height by means of a U-profile 16 is guided laterally.
- the guide shoe 11 comprises the U-profile 16 with the free legs 11.1, 11.2 and ensures that the hanging cable 3 does not leave the U-profile 16.
- Fig. 8 shows a guide shoe 11, in which the free legs 11.1, 11.2 together with a web 11.3 form an eyelet in which the hanging cable 3 is guided on all sides.
- This type of leadership is independent of the shaft wall, but is not suitable if the middle of the shaft, a second fixed point 12 is provided.
Abstract
Description
Die Erfindung betrifft einen Aufzug mit Schachtausrüstung und einer Informationseinrichtung bestehend aus mindestens einer Leseeinheit und mindestens einer Codierung zur Erzeugung von Schachtinformation zum Bewegen einer Aufzugskabine und/oder eines Gegengewichts im Aufzugsschacht, wobei die an der Schachtausrüstung angeordnete, mittels der Leseeinheit lesbare Codierung Information zur Erzeugung der Schachtinformation bereitstellt.The invention relates to an elevator with shaft equipment and an information device comprising at least one reading unit and at least one coding for generating shaft information for moving an elevator car and / or a counterweight in the elevator shaft, wherein the arranged on the shaft equipment, readable by means of the reading unit encoding information for generating provides the shaft information.
Aus der Schrift
Die Erfindung wie sie in Anspruch 1 gekennzeichnet ist, löst die Aufgabe, eine Informationseinrichtung zu schaffen, die ohne zusätzlichen Aufwand in einem Aufzugsschacht montierbar ist.The invention as characterized in
Vorteilhafte Weiterbildungen der Erfindung sind in den abhängigen Patentansprüchen angegeben.Advantageous developments of the invention are specified in the dependent claims.
Die durch die Erfindung erreichten Vorteile sind im Wesentlichen darin zu sehen, dass das Informationssystem ohne zusätzliche Arbeitsstunden und ohne zusätzliches Material, ausser einer Leseeinheit aufbaubar ist und dass das Informationssystem keinen zusätzlichen Platz im Aufzugsschacht benötigt. Die zur Informationserzeugung notwendige Codierung kann bereits werkseitig oder dann vor Ort an einem Hängekabel angebracht werden. Das Hängekabel führt Energie und Signale zur Aufzugskabine und Signale von der Aufzugskabine zur Aufzugssteuerung und dient gleichzeitig als Träger für die Codierung zur Informationserzeugung.The advantages achieved by the invention are essentially to be seen in the fact that the information system can be built without additional working hours and without additional material, except for a reading unit, and that the information system requires no additional space in the elevator shaft. The coding necessary for the generation of information can already be attached to a hanging cable at the factory or on site. The hanging cable carries energy and signals to the elevator car and signals from the elevator car to the elevator control and also serves as a carrier for the coding for information generation.
Bei der Inbetriebnahme der Informationseinrichtung wird eine Lernfahrt durchgeführt und das Hängekabel bzw. die Codierung mittels einer an der Aufzugskabine angeordneten Leseeinheit eingelesen und die dabei gewonnene Information abgespeichert. Falls im Laufe des Betriebs die Codierung verschmutzt oder beschädigt wird, kann die Informationseinrichtung die ausgefallene Codierung mittels der abgespeicherten Information rekonstruieren und beispielsweise eine Fehlermeldung bzw. eine Wartungsmeldung absetzen. Bei Betrieb fährt die Aufzugskabine auf und ab, wobei jeweils das überfahrene Hängekabel bzw. die überfahrene Codierung am Hängekabel mittels Leseeinheit erfasst wird und die Lage der Aufzugskabine bestimmt wird. Mit der Informationseinrichtung und mit der Codierung können auch Überwachungsfunktionen wahrgenommen werden. Die Codierung kann beispielsweise Information betreffend der Übergeschwindigkeit der Aufzugskabine oder Information betreffend der Abweichung der Aufzugskabine vom Stockwerkniveau bei Stockwerkhalt oder Information betreffend Überfahren des Schachtendes, etc. enthalten.When the information device is put into operation, a learning run is carried out and the hanging cable or the coding is read in by means of a reading unit arranged on the elevator car and the information obtained thereby is stored. If the coding is dirty or damaged in the course of operation, the information device can reconstruct the failed coding by means of the stored information and, for example, issue an error message or a maintenance message. During operation, the elevator car moves up and down, wherein in each case the overrun hanging cable or the overrun coding on the suspension cable is detected by means of a reading unit and the position of the elevator car is determined. With the information device and with the coding also monitoring functions can be performed. The coding may be, for example, information concerning the overspeed of the elevator car or information concerning the deviation of the elevator car from the floor level at floor stop or information regarding passing over the shaft end, etc.
Anhand der beiliegenden Figuren wird die vorliegende Erfindung näher erläutert.Reference to the accompanying figures, the present invention will be explained in more detail.
Es zeigen:
-
Fig. 1 eine Aufzugseinrichtung mit einer Informationseinrichtung, -
Fig. 2 ein Hängekabel mit einer zweispurigen Codierung, -
Fig. 3 und Fig. 4 Einzelheiten der Codierung, -
Fig. 5 eine Führungseinrichtung für das Hängekabel, -
Fig. 6 ein zweiter Fixpunkt zur Stabilisierung des Hängekabels, -
Fig. 7 eine Führungseinrichtung mit einem U-Profil und -
Fig. 8 eine Führungseinrichtung mit einer Öse.
-
Fig. 1 an elevator device with an information device, -
Fig. 2 a suspension cable with a two-track coding, -
FIG. 3 and FIG. 4 Details of the coding, -
Fig. 5 a guide device for the hanging cable, -
Fig. 6 a second fixed point for stabilizing the hanging cable, -
Fig. 7 a guide device with a U-profile and -
Fig. 8 a guide device with an eyelet.
Hängekabel, an denen eine Codierung anbringbar ist, sind auch möglich, beispielsweise ein Kabel mit einem halbrunden Querschnitt.Suspension cables to which a coding can be attached are also possible, for example a cable with a semicircular cross-section.
Eine Informationseinrichtung 4 erzeugt Schachtinformation, die von einer Steuereinrichtung zur Steuerung der Kabinenbewegung und der Kabinenposition und/oder der Gegengewichtsbewegung und/oder der Gegengewichtsposition genutzt wird. Die Schachtinformation umfasst beispielsweise die Geschwindigkeit und/oder die Position im Aufzugsschacht 1 der Aufzugskabine 2 und/oder eines Gegengewichts. Die Informationseinrichtung 4 besteht im gezeigten Ausführungsbeispiel aus mindestens einer Leseeinheit 5 und aus mindestens einer am Hängekabel 3 angeordneten Codierung 6, wie sie in
Die Codemuster a1 bis an sind unterschiedlich weil jedes Codemuster einen unterschiedlichen Informationsinhalt aufweist. Im untersten Codemuster a1 und im obersten Codemuster an ist beispielsweise die Position des Codemusters und/oder eine Information zur Auslösung eines Nothalts enthalten. In den Codemustern können auch Türpositionen enthalten sein. Die Codemuster zwischen dem untersten Codemuster a1 und dem obersten Codemuster an sind in einem bestimmten Abstand DS zum benachbarten Codemuster am Hängekabel 3 angeordnet und enthalten mindestens eine Information zur jeweiligen Position des Codemusters a1 ... an bzw. bilden einen über den Fahrweg der Aufzugskabine 2 reichenden, lesbaren Massstab in Codeform.The code patterns a 1 to are different because each code pattern has a different information content. In the lowest code pattern a 1 and in the top code pattern on, for example, the position of the code pattern and / or information for triggering an emergency stop is included. The code patterns may also contain door positions. The code patterns between the lowermost code pattern a 1 and the uppermost code pattern are arranged at a certain distance DS to the adjacent code pattern on the hanging
Die Information zur Position des Codemusters kann auch zweimal in jedem Codemuster a1 ... an enthalten sein, einmal für die Fahrt der Aufzugskabine 2 nach oben und einmal für die Fahrt der Aufzugskabine 2 nach unten.The information on the position of the code pattern can also be contained twice in each code pattern a 1 ..., once for the travel of the
Eine Codierung 6 mit nur einer Spur ist auch möglich. Eine gewisse Redundanz ist trotzdem gegeben, weil die Leseeinheit 5 gleichzeitig mehr als ein Codemuster im Fokus hat. Ist ein Codemuster verschmutzt oder beschädigt oder aus anderen Gründen nicht lesbar, kann der Informationsinhalt des nicht lesbaren Codemusters aus den benachbarten Codemustern rekonstruiert bzw. wiederhergestellt werden. Zusätzlich kann eine Fehlermeldung bzw. eine Wartungsmeldung erzeugt und abgesetzt werden.An
Befindet sich die Aufzugskabine 2 oben im Aufzugsschacht 1 ist die kabinenseitige Länge des Hängekabels 3 gross und die schachtwandseitige Länge des Hängekabels klein. Befindet sich die Aufzugskabine 2 unten im Aufzugsschacht 1 ist die kabinenseitige Länge des Hängekabels 3 klein und die schachtwandseitige Länge des Hängekabels gross. Die schachtwandseitige Länge des Hängekabels 3 und somit die Länge des Hängekabels 3, an der die Leseeinheit 5 die Codierung 6 liest, verändert sich je nach Position der Aufzugskabine 2. Je nach Länge des Hängekabels 3 auf der Schachtwandseite dehnt sich dieser Hängekabelabschnitt mehr oder weniger, was sich direkt auf die positionsmässige Genauigkeit der Codierung 6 auswirkt. Allerdings ist der Einfluss der Dehnung auf die positionsmässige Genauigkeit gering. Beispielsweise bei einer Schachthöhe von 40 m ist die Abweichung etwa 2,5 mm. Die Abweichung ist unabhängig von der Kabinenlast und kann beispielsweise bei einer Lernfahrt in Bezug auf die Türposition der untersten Stockwerktür gemessen werden. Der Einfluss der Dehnung auf die Messgenauigkeit kann auch rechnerisch korrigiert werden, indem zur gemessenen Position noch eine berechnete Längenänderung hinzu addiert wird.If the
Sinngemässes gilt für die Geschwindigkeit der Aufzugskabine 2. Allerdings bewirkt die Dehnung des Hängekabels 3 lediglich eine vernachlässigbare Abweichung der Geschwindigkeit der Aufzugskabine 2.The same applies to the speed of the
Der Führungsschuh 11 gemäss
Claims (8)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP11173791A EP2546181A1 (en) | 2011-07-13 | 2011-07-13 | Elevator installation and method for detecting the elevator car position. |
PCT/EP2012/063377 WO2013007680A1 (en) | 2011-07-13 | 2012-07-09 | Elevator |
US13/546,025 US20130015022A1 (en) | 2011-07-13 | 2012-07-11 | Determining shaft information |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP11173791A EP2546181A1 (en) | 2011-07-13 | 2011-07-13 | Elevator installation and method for detecting the elevator car position. |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2546181A1 true EP2546181A1 (en) | 2013-01-16 |
Family
ID=46397239
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11173791A Withdrawn EP2546181A1 (en) | 2011-07-13 | 2011-07-13 | Elevator installation and method for detecting the elevator car position. |
Country Status (3)
Country | Link |
---|---|
US (1) | US20130015022A1 (en) |
EP (1) | EP2546181A1 (en) |
WO (1) | WO2013007680A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2842899A1 (en) * | 2013-08-29 | 2015-03-04 | Cedes AG | Measuring tape for a lift device |
EP3085653A1 (en) * | 2015-04-24 | 2016-10-26 | Kone Corporation | Elevator |
CN106672730A (en) * | 2017-03-15 | 2017-05-17 | 日立电梯(中国)有限公司 | Absolute position detection system for elevator car and elevator system |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120118678A1 (en) * | 2010-11-16 | 2012-05-17 | Daniel Meierhans | Code strip for an elevator installation |
DE102014113514A1 (en) * | 2014-09-18 | 2016-03-24 | Thyssenkrupp Ag | elevator system |
ES2947228T3 (en) | 2016-07-27 | 2023-08-03 | Otis Elevator Co | Traction cable oscillation prevention |
US10479648B2 (en) * | 2017-05-12 | 2019-11-19 | Otis Elevator Company | Automatic elevator inspection systems and methods |
WO2019011828A1 (en) * | 2017-07-14 | 2019-01-17 | Inventio Ag | Method for configuring security related configuration parameters in a passenger transport installation |
US11745980B2 (en) * | 2017-12-22 | 2023-09-05 | Jaka Llc | Vertical transportation like elevator, escalator, dumbwaiter and lift systems monitoring, maintenance, repair, inspection, testing and modernization system and method |
US20200031624A1 (en) * | 2018-07-26 | 2020-01-30 | Otis Elevator Company | Elevator tension member verification |
CN111532913B (en) * | 2020-03-30 | 2022-07-08 | 日立电梯(中国)有限公司 | Car position detection equipment, method, device and system |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4427095A (en) * | 1980-02-08 | 1984-01-24 | Payne Reginald K | Monitoring and controlling lift positions |
WO2001083352A2 (en) * | 2000-05-01 | 2001-11-08 | Inventio Ag | Device for detecting the position of an elevator car |
WO2004106209A1 (en) * | 2003-05-15 | 2004-12-09 | Otis Elevator Company | Absolute position reference system |
US20060118364A1 (en) | 2004-08-12 | 2006-06-08 | Inventio Ag | Elevator installation with a car and equipment for detecting a car position, as well as a method of operating such an elecvator installation |
EP1813564A1 (en) * | 2006-01-27 | 2007-08-01 | Inventio Ag | Device for generating shaft information |
-
2011
- 2011-07-13 EP EP11173791A patent/EP2546181A1/en not_active Withdrawn
-
2012
- 2012-07-09 WO PCT/EP2012/063377 patent/WO2013007680A1/en active Application Filing
- 2012-07-11 US US13/546,025 patent/US20130015022A1/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4427095A (en) * | 1980-02-08 | 1984-01-24 | Payne Reginald K | Monitoring and controlling lift positions |
WO2001083352A2 (en) * | 2000-05-01 | 2001-11-08 | Inventio Ag | Device for detecting the position of an elevator car |
WO2004106209A1 (en) * | 2003-05-15 | 2004-12-09 | Otis Elevator Company | Absolute position reference system |
US20060118364A1 (en) | 2004-08-12 | 2006-06-08 | Inventio Ag | Elevator installation with a car and equipment for detecting a car position, as well as a method of operating such an elecvator installation |
EP1813564A1 (en) * | 2006-01-27 | 2007-08-01 | Inventio Ag | Device for generating shaft information |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2842899A1 (en) * | 2013-08-29 | 2015-03-04 | Cedes AG | Measuring tape for a lift device |
CN104418205A (en) * | 2013-08-29 | 2015-03-18 | 塞德斯股份公司 | Measuring tape for a lift device |
US9306623B2 (en) | 2013-08-29 | 2016-04-05 | Cedes Ag | Measurement tape for an elevator device |
EP3085653A1 (en) * | 2015-04-24 | 2016-10-26 | Kone Corporation | Elevator |
US10329119B2 (en) | 2015-04-24 | 2019-06-25 | Kone Corporation | Elevator with code pattern to determine car position |
CN106672730A (en) * | 2017-03-15 | 2017-05-17 | 日立电梯(中国)有限公司 | Absolute position detection system for elevator car and elevator system |
CN106672730B (en) * | 2017-03-15 | 2019-08-30 | 日立电梯(中国)有限公司 | Elevator sedan absolute position detection system and elevator device |
Also Published As
Publication number | Publication date |
---|---|
US20130015022A1 (en) | 2013-01-17 |
WO2013007680A1 (en) | 2013-01-17 |
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