EP0197252A1 - Device for generating lift-well information - Google Patents

Device for generating lift-well information Download PDF

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Publication number
EP0197252A1
EP0197252A1 EP86101380A EP86101380A EP0197252A1 EP 0197252 A1 EP0197252 A1 EP 0197252A1 EP 86101380 A EP86101380 A EP 86101380A EP 86101380 A EP86101380 A EP 86101380A EP 0197252 A1 EP0197252 A1 EP 0197252A1
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EP
European Patent Office
Prior art keywords
elevator car
hoistway
register
counter
memory
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Granted
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EP86101380A
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German (de)
French (fr)
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EP0197252B1 (en
Inventor
Kenneth Dipl.-Ing. Smith
Renato Ferrario
Hans Dipl.-Ing. Eth Hochstrasser
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Inventio AG
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Inventio AG
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Priority to AT86101380T priority Critical patent/ATE36143T1/en
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    • 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

Definitions

  • the invention relates to a device for generating shaft information in an elevator, wherein an elevator car is connected to a position transmitter, by means of which positions of the elevator car that match at least certain shaft locations can be determined.
  • EP 0 026 406 discloses an actual value transmitter assigned to a position control loop, which has a pulse generator in the form of a digital tachometer.
  • the digital tachometer is driven by the elevator car using the cable of a speed limiter and generates a pulse every 0.5 mm of travel.
  • the impulses are summed up in a cabin path counter to local numbers, which are actual values for the path regulation can be used.
  • the invention has for its object to provide a device of the type mentioned, the design effort is largely independent of the number of shaft information and floors and in which fewer shaft installations and fewer conductors are required in the hanging cable compared to the prior art.
  • a memory in which certain chimney locations are stored, which are successively transferred to a register in the course of a journey depending on the direction of travel.
  • the position transmitter has a counter, in which corresponding location numbers are formed during the journey of the respective position of the elevator car.
  • the register and the counter are connected to a comparator which compares the local numbers with one another. If they are identical, a signal representing shaft information is generated and a switching element assigned to the relevant shaft location is activated.
  • 1 denotes an elevator shaft, in which an elevator car 4 driven by a conveyor 2 via a conveyor cable 3 is guided.
  • a pulse generator 5 in the form of a digital tachometer is coupled to a drive pulley 6 which can be driven by means of a belt 8 fastened to the elevator car 4 and guided over a deflection roller 7 arranged at the lower end of the shaft.
  • the torque is transmitted to the drive pulley 6 by means of a positive connection, which can be produced, for example, through holes provided in the band 8, into which teeth arranged on the drive pulley 6 engage.
  • the pulse generator 5 and a counter 9 form a position transmitter, the pulse generator 5 generating a pulse, for example, per 1 mm of travel of the elevator car 4, and the pulses in the counter 9 are summed up to local numbers which correspond to the respective car position and are based on a specific basis for example, cover the floor of the car when the elevator car 4 is at the lower stop.
  • KUET, KSE1, KSE2 and KSE3 denote contacts of a safety circuit which can be actuated by means of switching elements 10, 11, 12, 13, for example in the form of relays, when the elevator car 4 drives past certain shaft locations.
  • the one contact KUET is a door bridging contact to be switched in the door area while the vehicle is moving and the other contacts KSE1, KSE2 and KSE3 are shaft end contacts, by means of which the delay of the elevator car 4 when entering a final stop can be controlled.
  • the particular chute locations are identified by location numbers which are stored in a memory 14 which is connected to a register 15.
  • the register 15 and the counter 9 of the position transmitter are connected to a comparator 16, the register 15 and the counter 9 being the registers of a microprocessor 17, the arithmetic unit of which forms the comparator 16.
  • the memory 14 in the form of a read-write memory, the microprocessor 17 and a read-only memory 18 are connected to one another via a bus 19 and, together with a clock generator 20, form a microcomputer 21.
  • An address decoder 22 is connected to the inputs on the bus 19 and with an output a bus driver 23 connected.
  • the bus driver 23 is on the input side connected to the pulse generator 5 and on the output side to a data conductor of the bus 19.
  • Further outputs of the address decoder 22 are connected to further bus drivers 24, 25, 26 and 27, which are connected on the output side to the relays 10, 11, 12 and 13.
  • the microcomputer 21 and the pulse generator 5 are connected to a buffered supply 28 connected to a three-phase network RSTO, so that the operation of the device is ensured in the event of a mains voltage failure.

Abstract

PCT No. PCT/CH86/00022 Sec. 371 Date Dec. 1, 1986 Sec. 102(e) Date Dec. 1, 1986 PCT Filed Feb. 18, 1986.Hoistway data which are indicative of predetermined elevator car positions at respective predeterminate hoistway locations, are generated without installations of actuating members in the elevator hoistway and transmitters at the elevator car. For this purpose, a memory is provided and has stored predeterminate positional numbers representative of the predeterminate hoistway locations. The predeterminated positional numbers are transmitted to a register in a travel direction dependent sequence during travel of the associated elevator car. A pulse transmitter is driven by the elevator car and the thus generated pulses are summed-up in a counter to positional numbers which correspond to respective car positions. The positional numbers of the counter and the predeterminate positional numbers transmitted to the register are compared with one another during travel in a comparator during elevator car travel. In case of identity, a signal representing a hoistway datum is generated and a switching member associated with the respective hoistway location is activated.

Description

Die Erfindung betrifft eine Einrichtung zur Erzeugung von Schachtinformationen bei einem Aufzug, wobei eine Aufzugskabine mit einem Positionsgeber verbunden ist, mittels welchem zumindest mit bestimmten Schachtorten übereinstimmende Positionen der Aufzugskabine feststellbar sind.The invention relates to a device for generating shaft information in an elevator, wherein an elevator car is connected to a position transmitter, by means of which positions of the elevator car that match at least certain shaft locations can be determined.

Bei einer mit der CH-PS 357 173 bekannt gewordenen Aufzugssteuerung sind bestimmte Schachtorte durch Binärzahlen gekennzeichnet. Zum Zwecke der Erzeugung von den Binärzahlen entsprechenden Signalen wird eine Kodiereinrichtung vorgeschlagen, bei der auf der Aufzugskabine vier Geberelemente in Form von Schnappschaltern befestigt sind, mittels welchen zwei verschiedene stationäre Schaltzustände erzeugt werden können. Diese Schnappschalter werden bei der Vorbeifahrt der Aufzugskabine an im Aufzugsschacht angeordneten Betätigungsorganen in Form von Gleitbahnen betätigt. Um die Anzahl Betätigungsorgane möglichst klein zu halten ist der Kodierung der Graykode zugrunde gelegt, wobei lediglich ein Betätigungsorgan pro Schachtort benötigt wird. Die auf mechanischer Basis arbeitende Kodiereinrichtung ist störanfällig, so dass es zu Fehlschaltungen kommen kann. Mit der CH-PS 622 226 wird eine Einrichtung vorgeschlagen, die diesen Nachteil vermeidet. Hierbei bestehen die auf der Aufzugskabine befestigten Geber aus bistabilen Magnetschaltern und die im Aufzugsschacht angeordneten Betätigungsorgane aus Schaltmagneten.In the case of an elevator control system which became known from CH-PS 357 173, certain shaft locations are identified by binary numbers. For the purpose of generating signals corresponding to the binary numbers, a coding device is proposed in which four transmitter elements in the form of snap switches are fastened on the elevator car, by means of which two different stationary switching states can be generated. These snap switches are actuated in the form of slideways when the elevator car drives past actuators arranged in the elevator shaft. In order to keep the number of actuators as small as possible, the coding is based on the gray code, with only one actuation organ is required per shaft location. The coding device, which works on a mechanical basis, is susceptible to faults, so that incorrect switching can occur. CH-PS 622 226 proposes a device which avoids this disadvantage. The sensors attached to the elevator car consist of bistable magnetic switches and the actuators arranged in the elevator shaft consist of switching magnets.

Der Nachteil der vorstehend beschriebenen Einrichtungen liegt darin, dass der für den Einbau der Betätigungsorgane im Aufzugsschacht erforderliche Aufwand an Haltevorrichtungen sowie Montage- und Einstellarbeiten beträchtlich ist und mit der Anzahl der Stockwerke und der für die Steuerung benötigten Schachtinformationen noch wächst. Hinzu kommt, dass bei vielen Aufzügen vierstellige Geber für die Erfassung aller Schachtinformationen nicht genügen, so dass für die Signalübertragung mehr als vier Leiter im Hängekabel vorgesehen werden müssen.The disadvantage of the devices described above is that the effort required for the installation of the actuators in the elevator shaft of holding devices and assembly and adjustment work is considerable and increases with the number of floors and the shaft information required for the control. In addition, four-digit encoders are not sufficient for the collection of all shaft information in many elevators, so that more than four conductors must be provided in the hanging cable for signal transmission.

Mit dem EP 0 026 406 ist ein einem Lageregelkreis zugeordneter Istwertgeber bekannt geworden, der einen Impulsgeber in Form eines Digitaltachometers aufweist. Der Digitaltachometer wird von der Aufzugskabine mittels des Seiles eines Geschwindigkeitsbegrenzers angetrieben und erzeugt pro 0,5 mm Fahrweg einen Impuls. Die Impulse werden in einem Kabinenwegzähler zu Ortszahlen summiert, die als Istwerte für die Wegregelung verwendet werden.EP 0 026 406 discloses an actual value transmitter assigned to a position control loop, which has a pulse generator in the form of a digital tachometer. The digital tachometer is driven by the elevator car using the cable of a speed limiter and generates a pulse every 0.5 mm of travel. The impulses are summed up in a cabin path counter to local numbers, which are actual values for the path regulation can be used.

Der Erfindung liegt die Aufgabe zugrunde eine Einrichtung der eingangs genannten Art zu schaffen, deren konstruktiver Aufwand weitgehend unabhängig von der Anzahl der Schachtinformationen und Stockwerke ist und bei der gegenüber dem Stand der Technik weniger Schachtinstallationen und weniger Leiter im Hängekabel benötigt werden.The invention has for its object to provide a device of the type mentioned, the design effort is largely independent of the number of shaft information and floors and in which fewer shaft installations and fewer conductors are required in the hanging cable compared to the prior art.

Diese Aufgabe wird durch die im Patentanspruch gekennzeichnete Erfindung gelöst. Hierbei ist ein Speicher vorgesehen, in welchem bestimmte Schachtorte kennzeichnende Ortszahlen gespeichert sind, die im Verlaufe einer Fahrt fahrtrichtungsabhängig nacheinander in ein Register übertragen werden. Der Positionsgeber weist einen Zähler auf, in welchem während der Fahrt der jeweiligen Position der Aufzugskabine entsprechende Ortszahlen gebildet werden. Das Register und der Zähler sind mit einem Komparator verbunden, der die Ortszahlen miteinander vergleicht. Bei Gleichheit wird ein eine Schachtinformation darstellendes Signal erzeugt und ein dem betreffenden Schachtort zugeordnetes Schaltglied aktiviert.This object is achieved by the invention characterized in the claim. In this case, a memory is provided in which certain chimney locations are stored, which are successively transferred to a register in the course of a journey depending on the direction of travel. The position transmitter has a counter, in which corresponding location numbers are formed during the journey of the respective position of the elevator car. The register and the counter are connected to a comparator which compares the local numbers with one another. If they are identical, a signal representing shaft information is generated and a switching element assigned to the relevant shaft location is activated.

Die mit der Erfindung erzielten Vorteile sind darin zu sehen, dass keine an der Aufzugskabine befestigten Positionsgeber erforderlich sind, wodurch die für die Signalübertragung benötigten Leiter im Hängekabel entfallen. Die Installationen der mit den Positionsgebern zusammenwirkenden Betätigungsorgane im Aufzugsschacht entfallen ebenfalls, so dass erhebliche Kosten gespart werden können.The advantages achieved with the invention can be seen in the fact that no position transmitters attached to the elevator car are required, as a result of which the conductors in the hanging cable required for signal transmission are eliminated. The installations the actuating elements in the elevator shaft that interact with the position sensors are also dispensed with, so that considerable costs can be saved.

Im folgenden wird die Erfindung anhand eines auf der Zeichnung dargestellten Ausführungsbeispieles näher erläutert.The invention is explained in more detail below with reference to an exemplary embodiment shown in the drawing.

Es zeigt:

  • Fig. 1 eine schematische Darstellung der erfindungsgemässen Einrichtung.
It shows:
  • Fig. 1 is a schematic representation of the device according to the invention.

In der Fig. 1 ist mit 1 ein Aufzugsschacht bezeichnet, in dem eine von einer Fördermaschine 2 über ein Förderseil 3 angetriebene Aufzugskabine 4 geführt ist. Ein Impulsgeber 5 in Form eines Digitaltachometers ist mit einer Antriebsscheibe 6 gekuppelt, welche mittels eines an der Aufzugskabine 4 befestigten, über eine am unteren Schachtende angeordnete Umlenkrolle 7 geführten Bandes 8 antreibbar ist. Die Uebertragung des Drehmomentes auf die Antriebsscheibe 6 erfolgt mittels Formschluss, der beispielsweise durch im Band 8 vorgesehene Löcher, in welche an der Antriebsscheibe 6 angeordnete Zähne eingreifen, hergestellt werden kann. Der Impulsgeber 5 und ein Zähler 9 bilden einen Positionsgeber, wobei der Impulsgeber 5 beispielsweise pro 1 mm Fahrweg der Aufzugskabine 4 einen Impuls erzeugt und die Impulse im Zähler 9 zu Ortszahlen summiert werden, welche der jeweiligen Kabinenposition entsprechen und sich auf eine bestimmte Basis, beispielsweise den Kabinenfussboden, wenn die Aufzugskabine 4 am unteren Anschlag ist, beziehen.In FIG. 1, 1 denotes an elevator shaft, in which an elevator car 4 driven by a conveyor 2 via a conveyor cable 3 is guided. A pulse generator 5 in the form of a digital tachometer is coupled to a drive pulley 6 which can be driven by means of a belt 8 fastened to the elevator car 4 and guided over a deflection roller 7 arranged at the lower end of the shaft. The torque is transmitted to the drive pulley 6 by means of a positive connection, which can be produced, for example, through holes provided in the band 8, into which teeth arranged on the drive pulley 6 engage. The pulse generator 5 and a counter 9 form a position transmitter, the pulse generator 5 generating a pulse, for example, per 1 mm of travel of the elevator car 4, and the pulses in the counter 9 are summed up to local numbers which correspond to the respective car position and are based on a specific basis for example, cover the floor of the car when the elevator car 4 is at the lower stop.

Mit KUET, KSE1, KSE2 und KSE3 sind Kontakte eines Sicherheitskreises bezeichnet, welche mittels Schaltgliedern 10, 11, 12, 13, beispielsweise in Form von Relais, bei der Vorbeifahrt der Aufzugskabine 4 an bestimmten Schachtorten betätigbar sind. Hierbei sind beispielsweise der eine Kontakt KUET ein während der Fahrt im Türbereich zu schaltender Türüberbrückungskontakt und die anderen Kontakte KSE1, KSE2 und KSE3 Schachtendekontakte, mittels welchen die Verzögerung der Aufzugskabine 4 bei Einfahrt in eine Endhaltestelle kontrolliert werden kann.KUET, KSE1, KSE2 and KSE3 denote contacts of a safety circuit which can be actuated by means of switching elements 10, 11, 12, 13, for example in the form of relays, when the elevator car 4 drives past certain shaft locations. Here, for example, the one contact KUET is a door bridging contact to be switched in the door area while the vehicle is moving and the other contacts KSE1, KSE2 and KSE3 are shaft end contacts, by means of which the delay of the elevator car 4 when entering a final stop can be controlled.

Die bestimmten Schachtorte sind durch Ortszahlen gekennzeichnet, welche in einem Speicher 14 gespeichert sind, der mit einem Register 15 in Verbindung steht. Das Register 15 und der Zähler 9 des Positionsgebers sind mit einem Komparator 16 verbunden, wobei das Register 15 und der Zähler 9 Register eines Mikroprozessors 17 sind, dessen Rechenwerk den Komparator 16 bildet. Der Speicher 14 in Form eines Schreib-Lesespeichers, der Mikroprozessor 17 und ein Festwertspeicher 18 sind über einen Bus 19 miteinander verbunden und bilden zusammen mit einem Taktgenerator 20 einen Mikrocomputer 21. Ein Adressendekodierer 22 ist mit seinen Eingängen am Bus 19 und mit einem Ausgang an einem Bustreiber 23 angeschlossen. Der Bustreiber 23 ist eingangsseitig mit dem Impulsgeber 5 und ausgangsseitig mit einem Datenleiter des Busses 19 verbunden. Weitere Ausgänge des Adressendekodierers 22 stehen mit weiteren Bustreibern 24, 25, 26 und 27 in Verbindung, die ausgangsseitig an den Relais 10, 11, 12 und 13 angeschlossen sind. Der Mikrocomputer 21 und der Impulsgeber 5 sind mit einer an einem Drehstromnetz RSTO angeschlossenen gepufferten Speisung 28 verbunden, so dass bei Netzspannungsausfall der Betrieb der Einrichtung gewährleistet ist.The particular chute locations are identified by location numbers which are stored in a memory 14 which is connected to a register 15. The register 15 and the counter 9 of the position transmitter are connected to a comparator 16, the register 15 and the counter 9 being the registers of a microprocessor 17, the arithmetic unit of which forms the comparator 16. The memory 14 in the form of a read-write memory, the microprocessor 17 and a read-only memory 18 are connected to one another via a bus 19 and, together with a clock generator 20, form a microcomputer 21. An address decoder 22 is connected to the inputs on the bus 19 and with an output a bus driver 23 connected. The bus driver 23 is on the input side connected to the pulse generator 5 and on the output side to a data conductor of the bus 19. Further outputs of the address decoder 22 are connected to further bus drivers 24, 25, 26 and 27, which are connected on the output side to the relays 10, 11, 12 and 13. The microcomputer 21 and the pulse generator 5 are connected to a buffered supply 28 connected to a three-phase network RSTO, so that the operation of the device is ensured in the event of a mains voltage failure.

Die vorstehend beschriebene Einrichtung arbeitet wie folgt:

  • Nach dem Start der Aufzugskabine 4 wird der Bustreiber 23 mit Hilfe des Adressendekodierers 22 aktiviert, so dass die vom Impulsgeber 5 erzeugten Impulse übertragen und im Zähler 9 zu Ortszahlen summiert werden können. Sodann wird die Ortszahl des dem Startort der Aufzugskabine 4 in Fahrtrichtung am nächsten liegenden bestimmten Schachtortes aus dem Speicher 14 in das Register 15 übertragen. Im Verlaufe der Fahrt werden nun im Komparator 16 die Ortszahlen des Zählers 9 und des Registers 15 ständig miteinander verglichen. Bei Gleichheit wird die Adresse der Ortszahl des betreffenden Schachtortes im Adressendekodierer 22 dekodiert und der zugeordnete Bustreiber aktiviert, worauf das nachgeschaltete Relais erregt und dessen Kontakt betätigt wird. Danach wird die Ortszahl des folgenden, in Fahrtrichtung am nächsten liegenden bestimmten Schachtortes in das Register 15 übertragen und in vorstehend beschriebener Weise fortgefahren.
The device described above works as follows:
  • After the elevator car 4 has started, the bus driver 23 is activated with the aid of the address decoder 22, so that the pulses generated by the pulse generator 5 can be transmitted and summed up to local numbers in the counter 9. The location number of the particular shaft location closest to the starting location of the elevator car 4 in the direction of travel is then transferred from the memory 14 into the register 15. In the course of the journey, the location numbers of the counter 9 and the register 15 are now continuously compared with one another in the comparator 16. In the case of equality, the address of the location number of the relevant shaft location is decoded in the address decoder 22 and the assigned bus driver is activated, whereupon the downstream relay is excited and its contact is actuated. Then the location number of the following, located in the direction of travel closest shaft location in the register 15 transferred and continued in the manner described above.

Claims (4)

1. Einrichtung zur Erzeugung von Schachtinformationen bei einem Aufzug, wobei eine Aufzugskabine (4) mit einem Positionsgeber verbunden ist, mittels welchem zumindest mit bestimmten Schachtorten übereinstimmende Positionen der Aufzugskabine (4) feststellbar sind, dadurch gekennzeichnet, - dass ein Speicher (14) vorgesehen ist, in welchem die bestimmten Schachtorte kennzeichnende Ortszahlen gespeichert sind, - dass der Speicher (14) mit einem Register (15) verbunden ist, in welches die Ortszahlen im Verlaufe einer Fahrt fahrtrichtungsabhängig nacheinander übertragen werden, - dass der Positionsgeber einen Zähler (9) aufweist, in welchem während der Fahrt der jeweiligen Position der Aufzugskabine (4) entsprechende Ortszahlen gebildet werden, und - dass das Register (15) und der Zähler (9) mit einem Komparator (16) verbunden sind, der die Ortszahlen miteinander vergleicht, wobei bei Gleichheit ein eine Schachtinformation darstellendes Signal erzeugt und ein dem betreffenden Schachtort zugeordnetes Schaltglied (10, 11, 12, 13) aktiviert wird. 1. Device for generating shaft information for an elevator, wherein an elevator car (4) is connected to a position transmitter, by means of which positions of the elevator car (4) that match at least certain shaft locations can be determined, characterized in that - that a memory (14) is provided in which the location numbers characterizing the specific shaft locations are stored, - That the memory (14) is connected to a register (15), in which the local numbers are successively transmitted in the course of a journey, depending on the direction of travel, - That the position transmitter has a counter (9), in which corresponding location numbers are formed during the journey of the respective position of the elevator car (4), and - That the register (15) and the counter (9) are connected to a comparator (16) which compares the local numbers with one another, in the case of equality generating a signal representing shaft information and a switching element (10, 11, 12) assigned to the relevant shaft location , 13) is activated. 2. Einrichtung nach Patentanspruch 1,
dadurch gekennzeichnet,
dass der Speicher (14), das Register (15), der Zähler (9) und der Komparator (16) Teile eines Mikrocomputers (21) sind, wobei der Speicher (14) ein Schreib-Lesespeicher ist und der Komparator (16) von einem Mikroprozessor (17) gebildet wird.2. Device according to claim 1,
characterized,
that the memory (14), the register (15), the counter (9) and the comparator (16) are parts of a microcomputer (21), the memory (14) being a random access memory and the comparator (16) from a microprocessor (17) is formed. 3. Einrichtung nach Patentanspruch 1, wobei der Positionsgeber einen von der Aufzugskabine (4) angetriebenen Impulsgeber (5) in Form eines Digitaltachometers aufweist,
dadurch gekennzeichnet,
dass der Impulsgeber (5) mit einer Antriebsscheibe (6) gekuppelt ist, auf welche ein an der Aufzugskabine (4) befestigtes Band (8) während der Fahrt mittels Formschluss ein Drehmoment überträgt.3. Device according to claim 1, wherein the position transmitter has a pulse generator (5) driven by the elevator car (4) in the form of a digital tachometer,
characterized,
that the pulse generator (5) is coupled to a drive pulley (6), to which a belt (8) attached to the elevator car (4) transmits a torque by positive locking during travel. 4. Einrichtung nach den Patentansprüchen 2 und 3,
dadurch gekennzeichnet,
dass der Mikrocomputer (21) und der Impulsgeber (5) an einer gepufferten Speisung (28) angeschlossen sind.4. Device according to claims 2 and 3,
characterized,
that the microcomputer (21) and the pulse generator (5) are connected to a buffered supply (28).
EP86101380A 1985-04-03 1986-02-03 Device for generating lift-well information Expired EP0197252B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86101380T ATE36143T1 (en) 1985-04-03 1986-02-03 DEVICE FOR GENERATION OF SHAFT INFORMATION IN AN ELEVATOR.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1436/85 1985-04-03
CH143685 1985-04-03

Publications (2)

Publication Number Publication Date
EP0197252A1 true EP0197252A1 (en) 1986-10-15
EP0197252B1 EP0197252B1 (en) 1988-08-03

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US (1) US4735295A (en)
EP (1) EP0197252B1 (en)
JP (1) JPS61229783A (en)
CN (1) CN1004413B (en)
AT (1) ATE36143T1 (en)
CA (1) CA1253982A (en)
DE (1) DE3660446D1 (en)
ES (1) ES8706564A1 (en)
FI (1) FI87554C (en)
WO (1) WO1990005693A1 (en)

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EP0297232A1 (en) * 1987-06-30 1989-01-04 Inventio Ag Actual value transmitter for closed loop position control of a lift system
US5329078A (en) * 1992-09-17 1994-07-12 Inventio Ag Elevator car position indicator for use by visually impaired persons

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JPH075248B2 (en) * 1987-07-09 1995-01-25 三菱電機株式会社 Elevator control device
JPH0725501B2 (en) * 1988-04-15 1995-03-22 三菱電機株式会社 Elevator control equipment
SG100645A1 (en) * 2000-03-31 2003-12-26 Inventio Ag Auxiliary device for displacing a payload receptacle of a lift and device for monitoring the position and the movement of a cage in a shaft of a lift
AU2003245277A1 (en) * 2003-05-15 2005-01-21 Otis Elevator Company Absolute position reference system
US7540357B2 (en) * 2003-05-15 2009-06-02 Otis Elevator Company Position reference system for elevators
ES2445621T3 (en) * 2005-03-22 2014-03-04 Inventio Ag Procedure for the detection of the state of the cabin of an elevator and installation of elevator, in which the procedure is applied
KR100730271B1 (en) * 2005-11-01 2007-06-20 오티스 엘리베이터 컴파니 Absolute position reference system
WO2013091695A1 (en) * 2011-12-21 2013-06-27 Kone Corporation Elevator

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0297232A1 (en) * 1987-06-30 1989-01-04 Inventio Ag Actual value transmitter for closed loop position control of a lift system
US5329078A (en) * 1992-09-17 1994-07-12 Inventio Ag Elevator car position indicator for use by visually impaired persons

Also Published As

Publication number Publication date
EP0197252B1 (en) 1988-08-03
CA1253982A (en) 1989-05-09
ATE36143T1 (en) 1988-08-15
FI861260A (en) 1986-10-04
WO1990005693A1 (en) 1990-05-31
US4735295A (en) 1988-04-05
DE3660446D1 (en) 1988-09-08
FI861260A0 (en) 1986-03-25
JPS61229783A (en) 1986-10-14
FI87554C (en) 1993-01-25
ES8706564A1 (en) 1987-07-01
ES552379A0 (en) 1987-07-01
CN1004413B (en) 1989-06-07
FI87554B (en) 1992-10-15
CN86101781A (en) 1986-10-08

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