EP3728096B1 - Lift assembly with a light curtain unit - Google Patents
Lift assembly with a light curtain unit Download PDFInfo
- Publication number
- EP3728096B1 EP3728096B1 EP18815752.3A EP18815752A EP3728096B1 EP 3728096 B1 EP3728096 B1 EP 3728096B1 EP 18815752 A EP18815752 A EP 18815752A EP 3728096 B1 EP3728096 B1 EP 3728096B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- elevator
- unit
- light beam
- test element
- shaft
- 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.)
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Links
- 238000012360 testing method Methods 0.000 claims description 71
- 238000011156 evaluation Methods 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 16
- 238000001514 detection method Methods 0.000 claims description 15
- 238000011161 development Methods 0.000 description 8
- 238000009434 installation Methods 0.000 description 8
- 238000012544 monitoring process Methods 0.000 description 3
- 238000009417 prefabrication Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 244000007853 Sarothamnus scoparius Species 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0087—Devices facilitating maintenance, repair or inspection tasks
- B66B5/0093—Testing of safety devices
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- 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
- B66B13/24—Safety devices in passenger lifts, not otherwise provided for, for preventing trapping of passengers
- B66B13/26—Safety devices in passenger lifts, not otherwise provided for, for preventing trapping of passengers between closing doors
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F15/00—Power-operated mechanisms for wings
- E05F15/40—Safety devices, e.g. detection of obstructions or end positions
- E05F15/42—Detection using safety edges
- E05F15/43—Detection using safety edges responsive to disruption of energy beams, e.g. light or sound
- E05F2015/434—Detection using safety edges responsive to disruption of energy beams, e.g. light or sound with cameras or optical sensors
- E05F2015/435—Detection using safety edges responsive to disruption of energy beams, e.g. light or sound with cameras or optical sensors by interruption of the beam
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2400/00—Electronic control; Electrical power; Power supply; Power or signal transmission; User interfaces
- E05Y2400/10—Electronic control
- E05Y2400/50—Fault detection
- E05Y2400/502—Fault detection of components
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2900/00—Application of doors, windows, wings or fittings thereof
- E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
- E05Y2900/104—Application of doors, windows, wings or fittings thereof for buildings or parts thereof for elevators
Definitions
- the invention relates to an elevator system with a light curtain unit and a method for testing such a light curtain unit.
- Conventional elevator systems have an elevator car that can usually be moved vertically in an elevator shaft.
- the elevator shaft has several shaft door openings.
- a separate shaft door is arranged at each of these shaft door openings. These shaft doors are usually arranged in alignment one above the other.
- An elevator car can be moved along this elevator shaft.
- the elevator car has a car door.
- the elevator car can be positioned within the elevator shaft in such a way that the car door is arranged on one of these shaft doors.
- the car door is usually coupled to this shaft door arranged on the car door in order to open, close or unlock it.
- a door drive arranged on the elevator car therefore enables both the actuation of the car door and the actuation of the shaft door coupled to the car door. If both the shaft door and the car door arranged on this shaft door are open, the elevator car can be entered or exited through these open doors.
- a light curtain unit In order to prevent objects or people from becoming trapped when the doors are closed, the area around the door opening is usually monitored by means of a light curtain unit.
- a light curtain unit comprises a transmitter unit for emitting a light beam and a receiver unit for receiving the light beam.
- the transmitting unit and the receiving unit are arranged at the door opening in such a way that the light beam is aligned along the plane of the door opening, between the open shaft door and the open car door. If the light beam of the light curtain is interrupted when the doors are closed, the closing of the doors is interrupted or reversed.
- the invention is based on the knowledge that a light curtain unit comprising a transmission unit, a reception unit and an evaluation unit must be functional essentially during the entire operation of the elevator installation. This means that the light beam can be sent by the transmitting unit and received by the receiving unit during operation of the elevator installation. This also applies in particular to the time period during which the elevator car is moved, that is to say the time period during which both the car door and the shaft doors are closed. In order to test both the transmitting unit and the receiving units without complicating the safety-related process when the elevator door is open or closing, the Period can be used in which the elevator car is moved and therefore the light curtain is not relevant to safety.
- a test element fixed in the elevator shaft is arranged in such a way that the light beam emitted by the transmitting unit and received by the receiving unit can be interrupted by the test element when the elevator car is being moved.
- the light beam it is possible for the light beam to be interrupted by the test element when both the car door and the shaft door are closed.
- a development of the elevator system has an elevator car that can be moved in the elevator shaft, the elevator car having a car door opening, and the transmitting unit being arranged on a first side of the car door opening and the receiving unit being arranged on the other side of the car door opening.
- the transmitting unit and the receiving unit are advantageously arranged on the elevator car so that each of the shaft doors of the elevator system does not have to be equipped with these components. In this way, all open shaft doors on which the open car door is arranged can be monitored using only one transmitter unit and one associated receiver unit.
- the test element can be arranged on the elevator car, with the transmitting unit and the receiving unit being fixed on one of the shaft doors.
- the test element is fixed to a wall of the elevator shaft.
- the test element can be fixed to a frame of a shaft door of the elevator system. In its closed position, such a shaft door closes a shaft door opening.
- the test element is preferably arranged on a shaft door sill, ie on the frame of the shaft door below the shaft door opening, or on a transom, ie on a cross member arranged above the shaft door opening, of the frame of the shaft door.
- the light beam is aligned horizontally.
- the test element can therefore have small dimensions both in the horizontal and in the vertical direction and can therefore be manufactured cheaply.
- the test element is designed to be elastic. Accordingly, the transmitting and receiving units can be tested in an unproblematic manner even if the elements of the shaft door arranged one above the other, which are fixed to the elevator shaft, are not aligned vertically with great accuracy. Accordingly, the test element can certainly collide with elements of the elevator car or the elevator shaft while it is traveling through the elevator shaft, without elements of the elevator system, in particular the test element itself, being destroyed or damaged.
- the elastic test element is preferably formed by a brush-like test element. It is advantageous that such a collision of the brush-like test element with the elements mentioned essentially does not produce any perceptible noises that are irritating for the elevator passenger.
- a brush-like test element for example comparable to a household broom, can for example comprise a multiplicity of bristles.
- the transmitter unit and the receiver unit have a vertical dimension that essentially corresponds to the height of the door opening, with the transmitter unit emitting a large number of light beams that can be detected by the receiver unit. The entire door opening can be monitored using such a light curtain.
- the receiving unit sends a signal to an evaluation unit for detecting the functionality of the transmitting or receiving unit depending on the light beam that is interrupted or not interrupted by the test element.
- an evaluation unit makes it possible to further process the recognized functionality of the transmitter or receiver unit within the elevator system and, if necessary, to continue to operate the elevator system in a safe operating mode for safety reasons, to take it out of operation if necessary, or to have the elevator system serviced by transmitting the data obtained by the evaluation unit to schedule a service center promptly.
- a further development of the elevator system includes a position detection device for detecting the position of the elevator car in the elevator shaft, the evaluation unit being designed in such a way that, by means of the continuously recorded position of the elevator car, a position of the test element can be compared with a position of the interrupted or to be interrupted light beam in the elevator shaft .
- the position detection device transmits a position of the elevator car to the evaluation unit, so that a vertical position of the test element attached to the elevator car or of the stationary light beam in the elevator car can be determined by means of the information transmitted by the position detection device, a position of the test element being compared with the position of the light beam and, if the positions of the test element and the light beam match, the detected or non-detected interruption of the light beam is included in the evaluation for the functionality of the transmitting unit and the receiving unit.
- a safety-related testing of this light curtain unit can be carried out if it is ensured that the at least one light beam of the light curtain unit can only be interrupted by the test element.
- an element of the elevator system which may interrupt the light beam and which is not the test element is typically arranged directly above the shaft door opening.
- Such an element can be a part of the lock of the landing door.
- the test element can be arranged directly below the shaft door opening.
- the method for testing the light curtain unit can be carried out immediately after the start of this run. Subsequent interruptions of the light beam cannot, for example, be included in an evaluation of the functionality of the light curtain unit.
- the method for testing the light curtain unit can be carried out immediately before the elevator car arrives at this landing door opening.
- a signal that triggers the braking of the elevator car can be used to carry out the method for testing the light curtain unit. If the test element has already passed, ie interrupted, a first of several light beams of the light curtain unit at this time, this signal can also be used to include this interruption in the evaluation.
- test element can be arranged above the shaft door opening. The procedure for testing the light curtain unit must then be carried out in a corresponding manner.
- FIG. 1 shows an elevator installation 1.
- the elevator installation 1 comprises an elevator shaft 2 and an elevator car 4 that can be moved in the elevator shaft 2 and typically a counterweight 6.
- the elevator car 4 can usually be moved essentially vertically in accordance with the alignment of the elevator shaft 2.
- the counterweight 6 is arranged to be movable in the opposite direction to the elevator car 4 .
- the elevator car 4 and the counterweight 6 are connected by means of a suspension means 9, which suspension means 9 in Head of the elevator shaft 2 can be guided over pulleys 8.
- One of these deflection rollers 8 can be designed as a drive unit for moving the elevator car 4 .
- the elevator shaft 2 has a plurality of shaft doors 12 arranged one above the other, these shaft doors 12 connecting the elevator shaft 2 to a plurality of usually horizontally aligned storeys.
- the elevator car 4 On its side facing the shaft doors 12, the elevator car 4 has a car door 10 for closing a car door opening.
- the elevator system 1 can include a position detection device, not shown.
- a position detection device is usually used as an input for a travel control of the elevator car 4 and can have a measuring tape with a coding extending over the entire length of the elevator shaft 2 and a detector attached to the elevator car 4 .
- the detector is used to record the coding of the measuring tape. This results in the possibility of continuously determining the position of the elevator car 4 .
- FIG figure 2 shows a front view of the elevator car 4 with the car door 10 in an open state.
- the cabin door 10 comprises at least one cabin door panel 24, with an edge of the cabin door panel 24 facing the cabin door opening 11 usually being in the open state with one of the cabin door posts 22 according to a view according to FIG figure 2 flees.
- the cabin door opening 11 is delimited by a further cabin door post 22 .
- a transmitting unit 16 and a receiving unit 18 of a light curtain unit are each arranged on either side of the car door opening 11 .
- Both the transmitter unit 16 and the receiver unit 18 can have a vertical dimension that essentially corresponds to the height of the cabin door opening 11 . Accordingly, the transmitter unit 16 can be designed in such a way that it emits a large number of light beams in the direction of the receiver unit 18 in order to be able to monitor the entire cabin door opening 11 in a vertical extent.
- FIG 3 shows an elevator car 4 arranged in an elevator shaft 2 in a plan view.
- Elevator car 4 shown is an example of a Landing door 12 arranged.
- the shaft door 12 has elements of a shaft door frame which essentially enclose, preferably completely, a shaft door opening 13 when the shaft door 12 is open.
- the elements of the shaft door frame are a shaft door sill 23, shaft door posts 20 arranged to the side of a shaft door opening 13 and a shaft door header (not shown) arranged above the shaft door opening 13.
- the transmitting and receiving units 16 , 18 are arranged on the elevator car 4 in such a way that a light beam 21 emitted by the transmitting unit and receivable by the receiving unit 18 runs between the car door 10 and the shaft door 12 .
- the light beam 21 is usually used to monitor the coupled, open car door 10 and the shaft door 12 and in particular to monitor the closing process of the car door 10 coupled to the shaft door 12.
- test element 30 is preferably fixed to the shaft door sill 13, to one of the door posts 20 or to the shaft door header, not shown.
- the test element 30 can be fixed to a wall of the elevator shaft 2 in the vertical alignment of the shaft doors, that is to say between the shaft doors of the elevator installation.
- the test element 30 is preferably elastic and is arranged partially between the transmitter unit 16 and the receiver unit 18 in the viewing direction of the travel direction of the elevator car 4 in such a way that the light beam 21 can be interrupted by the test element 30 .
- the transmitting unit 16 and receiving unit 18 explained are fixed to the elevator car 4, with the test element 30 being fixed to a wall of the elevator shaft or to a shaft door.
- the transmitting unit 16 and the receiving unit 18 can be fixed to a shaft door and the test element 30 can be fixed to the elevator car 4 .
- FIG 4 shows elements of a light curtain unit 35 for monitoring an elevator door that includes a car door and a shaft door and is not closed.
- the light curtain unit 35 includes a transmitter unit 16, a receiver unit 18 and an evaluation unit 32 and signal connections 34, 37.
- the receiving unit 18 comprises electro-optical monitoring sensors for detecting the light emitted by the transmitting unit 16, the light emitted by the transmitting unit 16 being based on infrared radiation.
- the transmission unit 16 is connected to the evaluation unit 32 by means of a first of the signal connections 34 .
- the receiving unit 18 is connected to the evaluation unit 32 by means of the second of the signal connections 37 .
- the transmitter unit 16 emits an exemplary light beam 21 which can be detected by the receiver unit 18 in the absence of an intervening obstacle. Signals are transmitted to the evaluation unit 32 by means of the signal connections 34, 37, i.e. if the components of the light curtain unit 35 are intact, the evaluation unit 32 can be used to identify that the light beam 32 was both emitted and received by the corresponding components of the light curtain unit 35.
- the light beam 21 is interrupted when the test element 30 is briefly arranged between the transmitting unit 16 and the receiving unit 18 . Consequently, an interruption of the light beam 21 that can be detected by the evaluation unit 32 is to be expected. This means that a signal transmitted from the receiving unit 18 to the evaluation unit 32 may only indicate briefly that the light beam 21 was not detected. If such a brief change in the signal transmitted from the receiving unit 18 to the evaluation unit 32 does not occur, it would have to be assumed that the light curtain unit 35 is not functional.
- the elevator system can be designed in such a way that if the positions of the briefly interrupted light beam 21 and the test element 30 match, the brief interruption of the corresponding signal that has taken place or not can be included in an evaluation of the functionality.
- the light curtain unit 35 is preferably safety-related. It may therefore be necessary to shut down the entire elevator system until the functional capability of the light curtain unit 35 has been restored.
- a control center which is responsible for servicing the elevator system, for the purpose of later restoring full functional capability by means of a service.
- this can be carried out in an elevator system with a transmitter unit 16 and a receiver unit 18 which have a vertical dimension which essentially corresponds to the height of the door opening.
- a transmitter unit 16 and a receiver unit 18 which have a vertical dimension which essentially corresponds to the height of the door opening.
- the not fully functional light curtain unit 35 can be supported or functionally replaced by a comparable safety system.
- the entire number of light beams 21 can be interrupted by the test element 30 while the elevator car 4 is traveling.
- the position detection device an evaluation is made possible so that it can be specified whether all of the light beams 21 are functional according to the purpose of the light curtain unit or which of the light beams 21 is not detected by the receiving unit 18 or possibly not sent by the transmitting unit 16.
Landscapes
- Elevator Door Apparatuses (AREA)
Description
Die Erfindung betrifft eine Aufzugsanlage mit einer Lichtvorhangseinheit und ein Verfahren zum Testen einer solchen Lichtvorhangseinheit.The invention relates to an elevator system with a light curtain unit and a method for testing such a light curtain unit.
Herkömmliche Aufzugsanlagen weisen eine üblicherweise vertikal in einem Aufzugsschacht verfahrbare Aufzugskabine auf. Der Aufzugsschacht weist mehrere Schachttüröffnungen auf. An jeder dieser Schachttüröffnungen ist eine separate Schachttür angeordnet. Üblicherweise sind diese Schachttüren fluchtend übereinander angeordnet. Eine Aufzugskabine ist entlang dieses Aufzugsschachtes verfahrbar.Conventional elevator systems have an elevator car that can usually be moved vertically in an elevator shaft. The elevator shaft has several shaft door openings. A separate shaft door is arranged at each of these shaft door openings. These shaft doors are usually arranged in alignment one above the other. An elevator car can be moved along this elevator shaft.
Die Aufzugskabine weist eine Kabinentür auf. Die Aufzugskabine kann derart innerhalb des Aufzugsschachtes positioniert werden, dass die Kabinentür an einer dieser Schachttüren angeordnet ist. Die Kabinentür wird üblicherweise mit dieser an der Kabinentür angeordneten Schachttür zu deren Öffnung, Schliessung bzw. Entriegelung gekoppelt. Ein an der Aufzugskabine angeordneter Türantrieb ermöglicht demnach sowohl die Betätigung der Kabinentür als auch die Betätigung der mit der Kabinentür gekoppelten Schachttür. Ist sowohl die Schachttür als auch die an dieser Schachttür angeordnete Kabinentür geöffnet, kann die Aufzugskabine durch diese geöffneten Türen betreten oder verlassen werden.The elevator car has a car door. The elevator car can be positioned within the elevator shaft in such a way that the car door is arranged on one of these shaft doors. The car door is usually coupled to this shaft door arranged on the car door in order to open, close or unlock it. A door drive arranged on the elevator car therefore enables both the actuation of the car door and the actuation of the shaft door coupled to the car door. If both the shaft door and the car door arranged on this shaft door are open, the elevator car can be entered or exited through these open doors.
Um ein Einklemmen von Gegenständen oder Personen bei der Schliessung der Türen zu vermeiden, ist der Bereich der Türöffnung üblicherweise mittels einer Lichtvorhangseinheit überwacht. Eine solche Lichtvorhangseinheit umfasst eine Sendeeinheit zum Aussenden eines Lichtstrahls und eine Empfangseinheit zum Empfangen des Lichtstrahls.In order to prevent objects or people from becoming trapped when the doors are closed, the area around the door opening is usually monitored by means of a light curtain unit. Such a light curtain unit comprises a transmitter unit for emitting a light beam and a receiver unit for receiving the light beam.
Demnach sind die Sendeeinheit und die Empfangseinheit derart an der Türöffnung angeordnet, dass der Lichtstrahl entlang der Ebene der Türöffnung, zwischen der geöffneten Schachttür und der geöffneten Kabinentür, ausgerichtet ist. Wird der Lichtstrahl des Lichtvorhanges bei der Schliessung der Türen unterbrochen, wird die Schliessung der Türen unterbrochen bzw. rückgängig gemacht.Accordingly, the transmitting unit and the receiving unit are arranged at the door opening in such a way that the light beam is aligned along the plane of the door opening, between the open shaft door and the open car door. If the light beam of the light curtain is interrupted when the doors are closed, the closing of the doors is interrupted or reversed.
Um die Sicherheit der den Aufzug benutzenden Personen jederzeit zu gewährleisten, besteht die Notwendigkeit, dass die Komponenten der Lichtvorhangseinheit während des Betriebes der Aufzugsanlage fehlerfrei funktionieren.In order to ensure the safety of the people using the elevator at all times, there is a need for the components of the light curtain unit to function correctly during operation of the elevator system.
Sowohl
Diese Aufgabe wird gelöst mittels einer Aufzugsanlage nach Anspruch 1.This object is achieved by means of an elevator system according to claim 1.
Die Aufgabe wird ebenso gelöst durch ein Verfahren nach Anspruch 9.The object is also achieved by a method according to claim 9.
Der Erfindung liegt die Erkenntnis zugrunde, dass eine eine Sendeeinheit, eine Empfangseinheit und eine Auswerteeinheit umfassende Lichtvorhangseinheit im Wesentlichen während des gesamten Betriebes der Aufzugsanlage funktionstüchtig sein muss. Das bedeutet, dass der Lichtstrahl während des Betriebes der Aufzugsanlage von der Sendeeinheit sendbar und von der Empfangseinheit empfangbar ist. Dies betrifft insbesondere auch den Zeitraum des Verfahrens der Aufzugskabine, also den Zeitraum während sowohl die Kabinentür als auch die Schachttüren geschlossen sind. Um sowohl die Sendeeinheit als auch die Empfangseinheiten zu testen, ohne den sicherheitsrelevanten Vorgang bei geöffneter bzw. sich schliessender Aufzugstür zu verkomplizieren, kann demnach der Zeitraum genutzt werden, in welcher die Aufzugskabine verfahren wird und demnach der Lichtvorhang nicht sicherheitsrelevant ist.The invention is based on the knowledge that a light curtain unit comprising a transmission unit, a reception unit and an evaluation unit must be functional essentially during the entire operation of the elevator installation. This means that the light beam can be sent by the transmitting unit and received by the receiving unit during operation of the elevator installation. This also applies in particular to the time period during which the elevator car is moved, that is to say the time period during which both the car door and the shaft doors are closed. In order to test both the transmitting unit and the receiving units without complicating the safety-related process when the elevator door is open or closing, the Period can be used in which the elevator car is moved and therefore the light curtain is not relevant to safety.
Demnach ist ein im Aufzugsschacht fixiertes Testelement derart angeordnet, dass der von der Sendeeinheit ausgesandte und von der Empfangseinheit empfangene Lichtstrahl beim Verfahren der Aufzugskabine durch das Testelement unterbrechbar ist. Mit anderen Worten bedeutet das, dass das Testelement die Projektion des Lichtstrahles in Verfahrrichtung der Aufzugskabine durchdringt. Darüber hinaus ist ermöglicht, dass der Lichtstrahl bei sowohl geschlossener Kabinentür als auch geschlossener Schachttür durch das Testelement unterbrechbar ist.Accordingly, a test element fixed in the elevator shaft is arranged in such a way that the light beam emitted by the transmitting unit and received by the receiving unit can be interrupted by the test element when the elevator car is being moved. In other words, this means that the test element penetrates the projection of the light beam in the travel direction of the elevator car. In addition, it is possible for the light beam to be interrupted by the test element when both the car door and the shaft door are closed.
Eine Weiterbildung der Aufzugsanlage weist eine in dem Aufzugsschacht verfahrbaren Aufzugskabine auf, wobei die Aufzugskabine eine Kabinentüröffnung aufweist, und die Sendeeinheit an einer ersten Seite der Kabinentüröffnung und die Empfangseinheit andernseitig der Kabinentüröffnung angeordnet sind. Vorteilhafterweise sind die Sendeeinheit und die Empfangseinheit an der Aufzugskabine angeordnet, um nicht jede der Schachttüren der Aufzugsanlage mit diesen Komponenten ausstatten zu müssen. Derart können mittels lediglich einer Sendeeinheit und einer dazugehörigen Empfangseinheit alle geöffneten Schachttüren überwacht werden, an denen die geöffnete Kabinentür angeordnet ist. Alternativ dazu kann das Testelement an der Aufzugskabine angeordnet sein, wobei die Sendeeinheit und die Empfangseinheit an einer der Schachttüren fixiert sind.A development of the elevator system has an elevator car that can be moved in the elevator shaft, the elevator car having a car door opening, and the transmitting unit being arranged on a first side of the car door opening and the receiving unit being arranged on the other side of the car door opening. The transmitting unit and the receiving unit are advantageously arranged on the elevator car so that each of the shaft doors of the elevator system does not have to be equipped with these components. In this way, all open shaft doors on which the open car door is arranged can be monitored using only one transmitter unit and one associated receiver unit. As an alternative to this, the test element can be arranged on the elevator car, with the transmitting unit and the receiving unit being fixed on one of the shaft doors.
Bei einer Weiterbildung der Aufzugsanlage ist das Testelement an einer Wand des Aufzugsschachtes fixiert. Alternativ dazu kann das Testelement an einem Rahmen einer Schachttür der Aufzugsanlage fixiert sein. Eine solche Schachttür verschliesst in ihrer Geschlossenstellung eine Schachttüröffnung. Eine derartige Positionierung des Testelementes ermöglicht eine vereinfachte und zügigere Vorfabrikation der Aufzugsanlage entsprechend einer gewählten Vorfabrikation, beispielhaft aufgrund der Vorfabrikation von Schachttürelementen. Vorzugsweise ist das Testelement an einer Schachttürschwelle, das heisst am Rahmen der Schachttür unterhalb der Schachttüröffnung, oder an einem Transom, das heisst an einem oberhalb der Schachttüröffnung angeordneten Querträger, des Rahmens der Schachttür angeordnet.In a further development of the elevator system, the test element is fixed to a wall of the elevator shaft. As an alternative to this, the test element can be fixed to a frame of a shaft door of the elevator system. In its closed position, such a shaft door closes a shaft door opening. Such a positioning of the test element enables a simplified and quicker prefabrication of the elevator system according to a selected prefabrication, for example due to the prefabrication of shaft door elements. The test element is preferably arranged on a shaft door sill, ie on the frame of the shaft door below the shaft door opening, or on a transom, ie on a cross member arranged above the shaft door opening, of the frame of the shaft door.
Bei einer Weiterbildung der Aufzugsanlage ist der Lichtstrahl horizontal ausgerichtet.In a further development of the elevator system, the light beam is aligned horizontally.
Entsprechend dieser horizontalen Ausrichtung des Lichtstrahls und der im Wesentlichen vertikalen Verfahrbarkeit der Aufzugskabine ist es demnach gegeben, dass das Testelement geringe Abmessungen sowohl in horizontaler als auch in vertikaler Richtung aufweisen kann und demnach günstig fertigbar ist.According to this horizontal alignment of the light beam and the substantially vertical movability of the elevator car, the test element can therefore have small dimensions both in the horizontal and in the vertical direction and can therefore be manufactured cheaply.
Bei einer Weiterbildung der Aufzugsanlage ist das Testelement elastisch ausgebildet. Demnach sind die Sende- und die Empfangseinheit selbst dann auf unproblematische Weise testbar, wenn die an dem Aufzugsschacht fixierten Elemente der übereinander angeordneten Schachttür nicht in hoher Genauigkeit vertikal fluchtend ausgerichtet sind. Demnach kann das Testelement durchaus mit Elementen der Aufzugskabine bzw. des Aufzugsschachtes während deren Fahrt durch den Aufzugsschacht kollidieren, ohne dass Elemente der Aufzugsanlage, insbesondere auch das Testelement selbst, zerstört oder beschädigt werden. Vorzugsweise ist das elastische Testelement durch ein bürstenartiges Testelement gebildet. Vorteilhaft ist, dass eine solche Kollision des bürstenartigen Testelementes mit den genannten Elementen im Wesentlichen keine wahrnehmbaren für den Aufzugspassagier irritierende Geräusche erzeugt. Ein solches bürstenartiges Testelement, beispielhaft vergleichbar mit einem haushaltüblichen Besen, kann beispielhaft eine Vielzahl von Borsten umfassen.In a development of the elevator system, the test element is designed to be elastic. Accordingly, the transmitting and receiving units can be tested in an unproblematic manner even if the elements of the shaft door arranged one above the other, which are fixed to the elevator shaft, are not aligned vertically with great accuracy. Accordingly, the test element can certainly collide with elements of the elevator car or the elevator shaft while it is traveling through the elevator shaft, without elements of the elevator system, in particular the test element itself, being destroyed or damaged. The elastic test element is preferably formed by a brush-like test element. It is advantageous that such a collision of the brush-like test element with the elements mentioned essentially does not produce any perceptible noises that are irritating for the elevator passenger. Such a brush-like test element, for example comparable to a household broom, can for example comprise a multiplicity of bristles.
Bei einer Weiterbildung der Aufzugsanlage weisen die Sendeeinheit und die Empfangseinheit eine vertikale Abmessung auf, die im Wesentlichen der Höhe der Türöffnung entspricht, wobei die Sendeeinheit eine Vielzahl von durch die Empfangseinheit detektierbaren Lichtstrahlen aussendet. Mittels eines solchen Lichtvorhangs kann die gesamte Türöffnung überwacht werden.In a further development of the elevator installation, the transmitter unit and the receiver unit have a vertical dimension that essentially corresponds to the height of the door opening, with the transmitter unit emitting a large number of light beams that can be detected by the receiver unit. The entire door opening can be monitored using such a light curtain.
Bei einer Weiterbildung der Aufzugsanlage sendet die Empfangseinheit abhängig des durch das Testelement unterbrochenen oder nicht unterbrochenen Lichtstrahls ein Signal an eine Auswerteeinheit zur Erkennung der Funktionstüchtigkeit der Sende- bzw. Empfangseinheit. Eine solche Auswerteeinheit ermöglicht, die erkannte Funktionstüchtigkeit der Sende- bzw. Empfangseinheit innerhalb der Aufzugsanlage weiterzuverarbeiten und gegebenenfalls die Aufzugsanlage aus Sicherheitsgründen in einem sicheren Betriebsmodus weiterzubetreiben, gegebenenfalls ausser Betrieb zu nehmen oder einen Service der Aufzugsanlage mittels einer Übermittlung der durch die Auswerteeinheit gewonnenen Daten an eine Servicezentrale zeitnah zu terminieren.In a further development of the elevator installation, the receiving unit sends a signal to an evaluation unit for detecting the functionality of the transmitting or receiving unit depending on the light beam that is interrupted or not interrupted by the test element. Such an evaluation unit makes it possible to further process the recognized functionality of the transmitter or receiver unit within the elevator system and, if necessary, to continue to operate the elevator system in a safe operating mode for safety reasons, to take it out of operation if necessary, or to have the elevator system serviced by transmitting the data obtained by the evaluation unit to schedule a service center promptly.
Eine Weiterbildung der Aufzugsanlage umfasst eine Positionserfassungseinrichtung zur Erfassung der Position der Aufzugskabine im Aufzugsschacht, wobei die Auswerteeinheit derart ausgelegt ist, dass mittels der kontinuierlich erfassten Position der Aufzugskabine eine Position des Testelementes mit einer im Aufzugsschacht eingenommenen Position des unterbrochenen bzw. zu unterbrechenden Lichtstrahles vergleichbar ist.A further development of the elevator system includes a position detection device for detecting the position of the elevator car in the elevator shaft, the evaluation unit being designed in such a way that, by means of the continuously recorded position of the elevator car, a position of the test element can be compared with a position of the interrupted or to be interrupted light beam in the elevator shaft .
Bei einer Weiterbildung des Verfahrens zum Testen einer mindestens einen Lichtstrahl aussendenden Sendeeinheit und einer den Lichtstrahl empfangenden Empfangseinheit einer Aufzugsanlage mit einer solchen Positionserfassungseinrichtung übermittelt die Positionserfassungseinrichtung eine Position der Aufzugskabine an die Auswerteeinheit, so dass eine vertikale Position des an der Aufzugskabine befestigten Testelementes oder des an der Aufzugskabine ortsfest angeordneten Lichtstrahls mittels der von der Positionserfassungseinrichtung übermittelten Information ermittelbar ist, wobei eine Position des Testelementes mit der Position des Lichtstrahls verglichen wird und bei einer Übereinstimmung der Positionen des Testelementes und des Lichtstrahls der detektierte bzw. nicht detektierte Unterbruch des Lichtstrahls in die Auswertung zur Funktionstüchtigkeit der Sendeeinheit und der Empfangseinheit einbezogen wird. Mittels einer eine solche Positionserfassungseinrichtung umfassenden Aufzugsanlage bzw. mittels eines mit Hilfe dieser Positionserfassungseinrichtung ausgeführten Verfahrens kann sichergestellt werden, dass Unterbrechungen des mindestens einen Lichtstrahls durch das Testelement selbst verursacht sind. Das heisst, dass allfällige Unterbrechungen des Lichtstrahls durch im Aufzugsschacht befindliche Gegenstände, die keinen Einfluss auf die Lichtvorhangseinheit haben, auch keine Auswirkungen auf den Test der Lichtvorhangseinheit haben.In a further development of the method for testing a transmitter unit that emits at least one light beam and a receiver unit that receives the light beam in an elevator system with such a position detection device, the position detection device transmits a position of the elevator car to the evaluation unit, so that a vertical position of the test element attached to the elevator car or of the stationary light beam in the elevator car can be determined by means of the information transmitted by the position detection device, a position of the test element being compared with the position of the light beam and, if the positions of the test element and the light beam match, the detected or non-detected interruption of the light beam is included in the evaluation for the functionality of the transmitting unit and the receiving unit. By means of an elevator installation comprising such a position detection device or by means of a method carried out with the aid of this position detection device, it can be ensured that interruptions in the at least one light beam are caused by the test element itself. This means that any interruptions in the light beam caused by objects in the elevator shaft that do not affect the light curtain unit also have no effect on the light curtain unit test.
Alternativ zur Verwendung einer Positionserfassungseinheit im beschriebenen Verfahren zum Testen der die Sendeeinheit und die Empfangseinheit aufweisenden Lichtvorhangseinheit kann ein sicherheitsrelevantes Testen dieser Lichtvorhangseinheit dann erfolgen, wenn sichergestellt ist, dass der mindestens eine Lichtstrahl der Lichtvorhangseinheit ausschliesslich durch das Testelement unterbrechbar ist.As an alternative to using a position detection unit in the method described for testing the light curtain unit that has the transmitter unit and the receiver unit, a safety-related testing of this light curtain unit can be carried out if it is ensured that the at least one light beam of the light curtain unit can only be interrupted by the test element.
Beispielhaft ist ein möglicherweise den Lichtstrahl unterbrechendes Element der Aufzugsanlage, welches nicht das Testelement ist, typischerweise unmittelbar oberhalb der Schachttüröffnung angeordnet. Ein solches Element kann ein Bestandteil der Verriegelung der Schachttür sein. Jedoch ist bei einem solchen Element nicht sichergestellt, ob es von der Schachtwand genügend weit in Richtung der Aufzugskabine ragt, um ein Testen des an der Aufzugskabine angeordneten Lichtvorhanges sicherzustellen. In einem solchen Fall kann das Testelement unmittelbar unterhalb der Schachttüröffnung angeordnet sein. Bei einer von dieser Schachttüröffnung ausgehenden nach unten durchgeführten Fahrt kann das Verfahren zum Testen der Lichtvorhangseinheit unmittelbar nach Beginn dieser Fahrt durchgeführt werden. Nachfolgende Unterbrechungen des Lichtstrahls können beispielhaft nicht in eine Auswertung zur Funktionsfähigkeit der Lichtvorhangseinheit einbezogen sein. Bei einer aufwärts gerichteten Fahrt kann das Verfahren zum Testen der Lichtvorhangseinheit unmittelbar vor einer Ankunft der Aufzugskabine an dieser Schachttüröffnung durchgeführt werden. Beispielhaft kann ein das Abbremsen der Aufzugskabine auslösendes Signal dazu genutzt werden, das Verfahren zum Testen der Lichtvorhangseinheit auszuführen. Wenn das Testelement beispielhaft zu diesem Zeitpunkt schon einen ersten von mehreren Lichtstrahlen der Lichtvorhangseinheit passiert, das heisst unterbrochen, hat, kann dieses Signal ebenso dazu genutzt werden, um diese bereits erfolgte Unterbrechung in die Auswertung miteinzubeziehen.By way of example, an element of the elevator system which may interrupt the light beam and which is not the test element is typically arranged directly above the shaft door opening. Such an element can be a part of the lock of the landing door. However, with such an element it is not guaranteed whether protrudes far enough from the shaft wall in the direction of the elevator car to ensure testing of the light curtain arranged on the elevator car. In such a case, the test element can be arranged directly below the shaft door opening. In the case of a downward run from this landing door opening, the method for testing the light curtain unit can be carried out immediately after the start of this run. Subsequent interruptions of the light beam cannot, for example, be included in an evaluation of the functionality of the light curtain unit. In the case of an upward journey, the method for testing the light curtain unit can be carried out immediately before the elevator car arrives at this landing door opening. For example, a signal that triggers the braking of the elevator car can be used to carry out the method for testing the light curtain unit. If the test element has already passed, ie interrupted, a first of several light beams of the light curtain unit at this time, this signal can also be used to include this interruption in the evaluation.
Im Falle einer Anordnung des Elementes zur Verriegelung der Schachttür unterhalb der beispielhaften Schachttüröffnung kann das Testelement oberhalb der Schachttüröffnung angeordnet sein. Das Verfahren zum Testen der Lichtvorhangseinheit ist dann in entsprechender Weise durchzuführen.If the element for locking the shaft door is arranged below the exemplary shaft door opening, the test element can be arranged above the shaft door opening. The procedure for testing the light curtain unit must then be carried out in a corresponding manner.
Nachfolgend ist die Erfindung anhand von Figuren näher dargestellt. Es zeigen:
-
Figur 1 : eine Aufzugsanlage; -
Figur 2 : eine an einer Schachtwand angeordnete Aufzugskabine in einer Draufsicht; -
Figur 3 : eine Frontansicht einer Aufzugskabine mit einer Türöffnung; und -
Figur 4 : Elemente einers Lichtvorhangseinheit.
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figure 1 : an elevator system; -
figure 2 : an elevator car arranged on a shaft wall in a plan view; -
figure 3 : a front view of an elevator car with a door opening; and -
figure 4 : Elements of a light curtain unit.
Die Aufzugsanlage 1 kann zur Erfassung einer Position der Aufzugskabine 4 im Aufzugsschacht 2 eine nicht dargestellte Positionserfassungseinrichtung umfassen. Eine solche Positionserfassungseinrichtung dient üblicherweise als Input für eine Fahrsteuerung der Aufzugskabine 4 und kann ein sich über die gesamte Länge des Aufzugsschachtes 2 erstreckendes Messband mit einer Codierung sowie einen an der Aufzugskabine 4 angebrachten Detektor aufweisen. Der Detektor dient der Erfassung der Codierung des Messbandes. Hierbei ergibt sich die Möglichkeit, die Position der Aufzugskabine 4 kontinuierlich zu bestimmen.For detecting a position of the
Eine Sendeeinheit 16 und eine Empfangseinheit 18 einer Lichtvorhangseinheit sind jeweils an einer der beiden Seiten der Kabinentüröffnung 11 angeordnet. Sowohl die Sendeeinheit 16 als auch die Empfangseinheit 18 können eine vertikale Abmessung aufweisen, die im Wesentlichen der Höhe der Kabinentüröffnung 11 entspricht. Demnach kann die Sendeeinheit 16 derart ausgebildet sein, dass sie eine Vielzahl von Lichtstrahlen in Richtung der Empfangseinheit 18 aussendet, um so in vertikaler Ausdehnung die gesamte Kabinentüröffnung 11 überwachen zu können.A transmitting
Die Sende- und die Empfangseinheit 16, 18 sind derart an der Aufzugskabine 4 angeordnet, dass ein von der Sendeeinheit ausgesandter und von der Empfangseinheit 18 empfangbarer Lichtstrahl 21 zwischen der Kabinentür 10 und der Schachttür 12 verläuft. Der Lichtstrahl 21 dient üblicherweise zur Überwachung der gekoppelten, geöffneten Kabinentür 10 und der Schachttür 12 und insbesondere der Überwachung des Schliessvorganges der mit der Schachttür 12 gekoppelten Kabinentür 10.The transmitting and receiving
Ein Testelement 30 ist vorzugsweise an der Schachttürschwelle 13, an einem der Türpfosten 20 oder dem nicht gezeigten Schachttürkämpfer fixiert. Alternativ dazu kann das Testelement 30 in der vertikalen Flucht der Schachttüren, das heisst zwischen den Schachttüren der Aufzugsanlage an einer Wand des Aufzugsschachtes 2 fixiert sein.A
Das Testelement 30 ist vorzugsweise elastisch ausgebildet und in Blickrichtung der Verfahrrichtung der Aufzugskabine 4 teilweise zwischen der Sendeeinheit 16 und der Empfangseinheit 18 derart angeordnet, dass der Lichtstrahl 21 durch das Testelement 30 unterbrechbar ist.The
Die gemäss den
Nachfolgend wird die Funktionsweise der Lichtvorhangseinheit 35 beschrieben. Die Sendeeinheit 16 emittiert einen beispielhaften Lichtstrahl 21, der beim Fehlen eines dazwischenliegenden Hindernisses von der Empfangseinheit 18 detektierbar ist. Mittels der Signalverbindungen 34, 37 werden Signale an die Auswerteeinheit 32 übermittelt, das heisst, mittels der Auswerteeinheit 32 ist bei intakten Komponenten der Lichtvorhangseinheit 35 erkennbar, dass der Lichtstrahl 32 von den entsprechenden Komponenten der Lichtvorhangseinheit 35 sowohl emittiert als auch empfangen wurde.The operation of the
Während des Verfahrens der Aufzugskabine im Aufzugsschacht wird der Lichtstrahl 21 unterbrochen, wenn das Testelement 30 kurzzeitig zwischen der Sendeeinheit 16 und der Empfangseinheit 18 angeordnet ist. Folglich ist eine von der Auswerteeinheit 32 erkennbare Unterbrechung des Lichtstrahls 21 zu erwarten. Dies bedeutet, dass ein von der Empfangseinheit 18 an die Auswerteeinheit 32 übermitteltes Signal lediglich kurzzeitig darauf schliessen lassen darf, dass der Lichtstrahl 21 nicht detektiert wurde. Falls eine derartige kurzzeitige Änderung des von der Empfangseinheit 18 an die Auswerteeinheit 32 übermittelten Signals nicht eintritt, wäre davon auszugehen, dass die Lichtvorhangseinheit 35 funktionsuntüchtig ist.During the travel of the elevator car in the elevator shaft, the
Mittels einer beispielhaften Verwendung eines Signals der Positionserfassungseinrichtung ist eine Auswertung der von der Sendeeinheit 16 und der Empfangseinheit 18 übermittelten Signale dahingehend möglich, dass bei einer bekannten Position des Testelementes 30 im Aufzugsschacht 2 eine tatsächliche Unterbrechung des Lichtstrahles 35 durch das Testelement 30 mit einer zu erwartenden Unterbrechung des Lichtstrahles 35 durch das Testelement 30 vorhersehbar ist. Die Aufzugsanlage kann derart ausgelegt sein, dass bei einer Übereinstimmung der Positionen des kurzzeitig unterbrochenen Lichtstrahls 21 und des Testelementes 30 der erfolgte bzw. nicht erfolgte kurzzeitige Unterbruch des entsprechenden Signals in eine Auswertung zur Funktionstüchtigkeit einzubeziehen ist.By means of an exemplary use of a signal from the position detection device, it is possible to evaluate the signals transmitted by the
Die Lichtvorhangseinheit 35 ist vorzugsweise sicherheitsrelevant. Gegebenenfalls kann daher die Notwendigkeit bestehen, die gesamte Aufzugsanlage bis zur Wiederherstellung der Funktionstüchtigkeit der Lichtvorhangseinheit 35 stillzulegen. In Abhängigkeit vom Grad der Funktionsuntüchtigkeit kann alternativ dazu lediglich ein automatisierter Ruf in eine Zentrale, welche für den Service der Aufzugsanlage zuständig ist, zum Zweck der späteren Wiederherstellung der vollständigen Funktionstüchtigkeit durch einen Service erfolgen. Beispielhaft ist dies bei einer Aufzugsanlage mit einer Sendeeinheit 16 und einer Empfangseinheit 18, welche eine vertikale Abmessung aufweisen, die im Wesentlichen der Höhe der Türöffnung entspricht, durchführbar. Bei einer demgemässen Vielzahl von Lichtstrahlen 21, welche durch die Sendeeinheit 16 und die Empfangseinheit 18 sendbar bzw. empfangbar sind, ist eine Stilllegung der Aufzugsanlage bei Ausfall lediglich einer bzw. einiger weniger der Lichtstrahlen nicht notwendig. Darüber hinaus oder alternativ dazu kann die nicht voll funktionsfähige Lichtvorhangseinheit 35 durch ein vergleichbares Sicherheitssystem unterstützt oder funktional ersetzt werden.The
Nachfolgend wird eine beispielhafte Funktionsweise der Lichtvorhangseinheit 35 beschrieben, welche bei einer gemäss
Demnach ist während einer Fahrt der Aufzugskabine 4 die gesamte Zahl der Lichtstrahlen 21 durch das Testelement 30 unterbrechbar. Mittels einer Verwendung der Positionserfassungseinrichtung ist eine Auswertung dahingehend ermöglicht, dass spezifiziert werden kann, ob alle der Lichtstrahlen 21 gemäss dem Zweck der Lichtvorhangseinheit funktionstüchtig sind bzw. welcher der Lichtstrahlen 21 nicht von der Empfangseinheit 18 detektiert oder gegebenenfalls nicht von der Sendeeinheit 16 ausgesendet wird.Accordingly, the entire number of
Claims (9)
- An elevator system (1) comprisingan elevator shaft (2), anda shaft door (12), andan elevator car (4) that can be moved in the elevator shaft (2), wherein the elevator car (4) comprises a car door opening (11), anda transmitting unit (16) for emitting at least one light beam (21), anda receiving unit (18) for receiving the light beam (21), wherein the transmitting unit (16) is arranged on a first side of the car door opening (11) and the receiving unit (18) is arranged on the other side of the car door opening (11), and a test element (30) for testing the receiving unit and/or for testing the transmitting unit (16), wherein the light beam (21) between the transmitting and the receiving unit (16, 18) can be interrupted by the test element (30), wherein the test element (30) is fixed to a wall of the elevator shaft (2) or to a frame of the shaft door (12), wherein the test element (30) is arranged in such a way that the light beam (21) emitted by the transmitting unit (16) and received by the receiving unit (18) can be interrupted by the test element (30) upon movement of the elevator car (4).
- Elevator system (1) according to any of the preceding claims, wherein the light beam (21) is aligned horizontally.
- Elevator system (1) according to any one of the preceding claims, wherein the test element (30) is of elastic design.
- Elevator system (1) according to claim 3, wherein the test element (30) is of brush-like design.
- Elevator system (1) according to any one of the preceding claims, wherein the transmitting unit (16) and the receiving unit (18) have a vertical dimension which substantially corresponds to the height of the door opening (11, 13), wherein the transmitting unit (16) emits a plurality of light beams (21) that are detectable by the receiving unit (18), wherein each of these light beams (21) can be interrupted by the test element (30).
- Elevator system (1) according to any one of the preceding claims, wherein the receiving unit (18), depending on whether or not the light beam (21) is interrupted by the test element (30), transmits a signal to an evaluation unit (32) for detecting the functionality of the transmitting or receiving unit (16, 18).
- Elevator system (1) according to claim 6, comprising a position detection device for detecting the position of the elevator car (4) in the elevator shaft (2), wherein the evaluation unit (32) is designed such that, by means of the continuously detected position of the elevator car (4), a position of the test element (30) can be compared with a position of the light beam (21) assumed in the elevator shaft (2), which light beam is interrupted or to be interrupted.
- Method for testing a transmitting unit (16) emitting at least one light beam (21), and a receiving unit (18) receiving the light beam (21), of an elevator system (1) according to any one of claims 1 to 7, wherein the light beam (21) between transmitting unit (16) and receiving unit (18) is interrupted by the test element (30) upon travel of the elevator car (4) and, via a change in the signal profile generated by the receiving unit (18), it is detected by means of the evaluation unit (32) that the transmitting unit (16) and the receiving unit (18) are functional or non-functional.
- Method for testing a transmitting unit (16) emitting at least one light beam (21), and a receiving unit (18) receiving the light beam (21), of an elevator system (1) according to claim 8, wherein the elevator system (1) has a position detection device, and the position detection device transmits a position of the elevator car (4) to the evaluation unit (35) so that a vertical position of the test element (30) fastened to the elevator car (4), or of the light beam (21) arranged stationary on the elevator car (4), can be determined by means of the information transmitted by the position detection device, wherein a position of the test element (30) is compared with the position of the light beam (21) and, given agreement of the positions of the test element (30) and the light beam (21), the detected or not-detected interruption of the light beam (21) is incorporated into the evaluation of the functionality of the transmitting unit (16) and the receiving unit (18).
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EP17208585 | 2017-12-19 | ||
PCT/EP2018/085160 WO2019121487A1 (en) | 2017-12-19 | 2018-12-17 | Lift system having a light curtain unit |
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CN112299174B (en) * | 2019-07-29 | 2022-04-12 | 上海三菱电梯有限公司 | Elevator car access & exit monitoring system |
CN112158694B (en) * | 2020-09-18 | 2021-12-17 | 猫岐智能科技(上海)有限公司 | Elevator control system and elevator equipment |
CN115849144B (en) * | 2022-09-22 | 2024-04-26 | 杭州展特智能科技有限公司 | Goods identification and anti-collision control method for goods elevator |
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US6157024A (en) * | 1999-06-03 | 2000-12-05 | Prospects, Corp. | Method and apparatus for improving the performance of an aperture monitoring system |
GB2526069A (en) | 2014-05-02 | 2015-11-18 | Ensota Ltd | A method of testing an optical sensor |
GB2526070A (en) | 2014-05-02 | 2015-11-18 | Ensota Ltd | Method and testing apparatus for testing an optical sensor |
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