EP2252537A1 - Measuring apparatus for an elevator system and an elevator system having such a measuring apparatus - Google Patents
Measuring apparatus for an elevator system and an elevator system having such a measuring apparatusInfo
- Publication number
- EP2252537A1 EP2252537A1 EP08706381A EP08706381A EP2252537A1 EP 2252537 A1 EP2252537 A1 EP 2252537A1 EP 08706381 A EP08706381 A EP 08706381A EP 08706381 A EP08706381 A EP 08706381A EP 2252537 A1 EP2252537 A1 EP 2252537A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- elevator car
- receiver
- measuring device
- elevator
- transmitter
- 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.)
- Granted
Links
Classifications
-
- 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
- B66B5/0006—Monitoring devices or performance analysers
- B66B5/0018—Devices monitoring the operating condition of the elevator system
- B66B5/0031—Devices monitoring the operating condition of the elevator system for safety reasons
Definitions
- the invention relates to a measuring device for a Aufzugsanla- ge with at least one elevator car according to the preamble of the independent claim.
- the invention relates to a corresponding elevator installation.
- elevator cars in elevator systems are each equipped with their own drive and their own braking system.
- the electronic control of the entire elevator system is often designed so that there should be no collisions of the individual elevator cars to stationary obstacles connected to a roadway, such as a roadway end or to an adjacent elevator car.
- the roadway is defined by a shaft and a track end by a shaft end.
- the roadway may also be designed as a truss or box construction or further.
- Under roadway both the directly claimed by an elevator car room as well as the adjoining room, which is limited for example by the shaft space understood.
- an emergency stop or even with a normal floor stop of a cabin can not be guaranteed under all circumstances that an upper or lower located on the same roadway further elevator car can stop in time to avoid a collision. This could be avoided by giving the controller sufficient distances between the individual elevator cars and also adapted vertical speeds.
- Such a requirement can not fully exploit the transport capacity of an elevator installation, which has an impact on the cost-benefit efficiency.
- European Patent EP 769 469 B1 now discloses an elevator installation which comprises means for opening the safety circuit of an elevator car if it comes to an undesired approach to another elevator car. According to the
- Patent specification mentioned safety modules are present at each elevator car, which evaluate the cabin positions and speeds to possibly trigger braking operations on other elevator cars can.
- the individual safety modules must always know and evaluate the cabin positions and speeds of the other elevator cars involved in order to be able to react correctly in an emergency. This requires a special decision module, which is responsible for determining the stop commands in an emergency.
- infrared, laser or ultrasonic sensors which measure the distances to the adjacent elevator cars located above and below the elevator car can be arranged on each elevator car.
- this electro-optical approach makes it possible to control the distance of the elevator cars and possibly also the distance to a roadway end, such as an upper or lower shaft end, and if necessary to intervene in the control to prevent a collision.
- the present invention is equally suitable for preventing a collision between two elevator cars that are relatively approaching, as well as for preventing a collision between an elevator car and a roadway end.
- equivalent variants of the measuring device according to the invention for an elevator installation will be described.
- the measuring device has an elevator installation with at least one elevator car, which is movable along a roadway of the elevator installation, via at least one transmitter and at least one receiver.
- a receiver is arranged on an elevator car and a transmitter on the roadway and / or a transmitter is arranged on an elevator car and a receiver on the roadway.
- the transmitter emits a beam at a first angle with respect to the direction of travel. The first angle is predetermined such that when the elevator car approaches an obstacle which is stationary relative to the roadway, the beam strikes the receiver.
- the measuring device is according to the first variant so redundant interpretable.
- a transmitter are arranged on the roadway and a receiver on a first elevator car.
- a second pair of transmitter and receiver is reversed, that is, the transmitter on the elevator car and the receiver arranged on the roadway.
- a redundant design of the measuring device can also be achieved in that two transmitters are arranged on the roadway and two receivers on the elevator car.
- the measuring device according to the invention has an elevator installation with at least one elevator car, which is movable along a roadway of the elevator installation, via at least one transmitter and at least one receiver.
- a receiver and a transmitter are arranged on an elevator car and / or a receiver and transmitter are arranged on a roadway.
- the transmitter emits a beam at a first angle with respect to the direction of travel. The first angle is predetermined so that when the elevator car approaches an adjacent elevator car or an obstacle which is stationary with respect to the roadway, the beam strikes the receiver.
- the measuring device preferably has at least one reflector which reflects a beam emitted by the transmitter to the receiver. If the transmitter and the receiver are arranged on the roadway, the reflector is attached to the elevator car. Conversely, the reflector is attached to the roadway, when the transmitter and receiver are arranged on the elevator car. Also in this second variant, the measuring device is redundant interpretable. For this purpose, a pair of transmitters and receivers are arranged on the elevator car and on the roadway. In addition, a redundant design of the measuring device can also be achieved in that two transmitters and two receivers are arranged on the elevator car or on the roadway.
- the measuring device has an elevator installation with at least one elevator car, which is movable along a roadway of the elevator installation, via at least one transmitter and at least one receiver.
- a receiver is arranged on a first elevator car, and a transmitter is arranged on a second elevator car.
- the transmitter emits a beam at a first angle with respect to the direction of travel.
- the first angle is predetermined so that when approaching the elevator cars, the beam hits the receiver.
- the measuring system of the third variant can also be designed redundantly.
- An additional transmitter and receiver are in this case arranged on the elevator cars such that either two transmitters are arranged on a first elevator car and two transmitters are arranged on a second elevator car or a respective transmitter and receiver are arranged on a first and a second elevator car.
- the measuring device according to the invention can be equipped with one or more reflectors, which are arranged on an elevator car and / or on the roadway and reflect a beam incident from the transmitter to a receiver.
- the senor emits a beam that can be detected by an associated receiver.
- This transmitter and receiver pair and possibly one or more associated reflectors are arranged in the region of the roadway and the elevator cars so that when moving one or more elevator cars, the beam of the transmitter on the receiver and / or possibly on a reflector generates a traveling measurement point.
- the receiver and / or the reflector thereby define a temporal or local reaction region in which a suitable reaction can be triggered. This reaction area can be used, for example, to compensate for system reaction times or building tolerances.
- the receiver has a beam for detecting the beam
- the receiver preferably comprises an evaluation system in order to be able to trigger an adapted reaction as a function of which of the sections the beam strikes.
- this sensor area is arranged perpendicular to the elevator car or on the roadway. This minimizes the settling of dust particles on the sensor area. In order to protect the sensor area even better from the settling of dust particles, it is overhanging with respect to a vertical direction, ie can be positioned downwards with the sensitive sensor side in an angle range of 0 to 90 °. This variant is preferably used in conjunction with a reflector.
- the beam generated by the transmitter can be based on different physical principles.
- the beam comprises electromagnetic, electrical, or magnetic waves, switching or light waves.
- the sensor area of the receiver is tuned to receive the beam depending on the selected variant.
- transmitters and receivers are selected which transmit or receive infrared, laser or ultrasound beams.
- the angle between the beam and the direction of travel can be set variably in time as a function of one or more parameters.
- a position, speed or acceleration of an elevator car, a distance, a relative speed and / or a relative acceleration and / or an operating state of the elevator installation can be selected as parameters.
- An additional application variant of the measuring device according to the invention opens up, in particular, in the case of a receiver with a sensor region subdivided into a plurality of sections. Since each section can be evaluated separately, the sensor can be evaluated with regard to the position of an elevator car as long as it is within the range of the migrating measuring point. With an appropriate length of the sensor area and / or positioning of the transmitter, receiver and / or reflectors and / or the setting of the angle, the measuring device can also be used as absolute position detection device.
- An advantage of the invention results from the simple arrangement of commercial components to realize a measuring device that realizes a distance control or a combined distance and speed control and / or determines a position of an elevator car relative to the road.
- a further advantage lies in the automatic determination of the distance by the receiver and the triggering of an autonomous reaction in case of undesired approach of an elevator car to a roadway end or to an adjacent elevator car. Furthermore, in conjunction with a local computing unit, the receiver is able to trigger a collision-preventing reaction based on speed information with a small amount of computation. In addition, the redundant design of the measuring device provides additional security and enables an autonomous and rapid collision-preventing reaction of an elevator car.
- FIG. 1A shows a side view of a first elevator installation according to the invention at a first time
- FIG. 1B shows a side view of the elevator installation according to FIG. 1A at a later time
- FIG. Fig. 2 is a side view of part of a second
- Fig. 3 is a side view of part of a third
- An elevator installation typically has at least one
- Elevator car suspended by a traction means.
- a counterweight of the elevator system is preferably provided, which is also connected to the traction means.
- the elevator system is equipped with a drive, the one
- Traction sheave a motor and optionally includes a holding brake.
- the traction sheave and the traction agent are in active con-
- the traction sheave and the motor are usually connected to each other via a shaft and / or a gear, so that the motor travels over the traction sheave dun traction means the elevator car.
- the space traversed by the elevator car is predetermined by a roadway.
- the roadway includes the space required directly from the elevator car, as well as the adjoining room. In most cases, the space predefined by the carriageway is limited by a lift shaft.
- the terms roadway and elevator shaft can be understood synonymously.
- the elevator shaft is laterally defined by four shaft walls and by a shaft ceiling and shaft bottom. The shaft ends indicate an area which comprises the shaft ceiling or the shaft floor and the adjacent upper or lower part of the shaft walls.
- the measuring device has at least one transmitter and one associated receiver.
- the transmitter transmits a beam receivable by the receiver.
- the receiver can initiate a reaction directly or in conjunction with a connected control unit due to a received beam.
- reflectors are also part of the measuring system.
- the reflectors reflect the beam transmitted by a transmitter directly or via one or more reflectors to a receiver.
- the transmitter is preferably designed as a light source which emits a light beam in the visible or invisible wavelength range.
- the receiver has a photosensitive sensor area which allows receiving the light beam.
- a first embodiment of the invention is described in connection with the two snapshots in Figures IA and IB.
- Shown is a simple elevator installation 10 with an upper elevator car A1 and a lower elevator car A2, both of which are substantially independent vertically on a common carriageway 11, for example an elevator shaft 11, of the elevator installation 10 along a direction of travel z are movable.
- the elevator cars Al, A2 can be provided with a drive and a holding brake per elevator car A1, A2, or, for example, can be individually coupled to a central drive system in order to allow individual movement along the roadway 11.
- the elevator cars can also be moved horizontally or in another direction if the carriageway is oriented accordingly.
- a measuring device comprises, for example, a first electro-optical measuring device 20 with a first transmitter, for example a light source 21, which is arranged in a lower region of the upper elevator car Al, as schematically indicated in FIGS. 1A and 1B.
- a first transmitter for example a light source 21, which is arranged in a lower region of the upper elevator car Al, as schematically indicated in FIGS. 1A and 1B.
- Particularly suitable light sources are light-emitting diodes which emit concentrated light. Even better are laser diodes or solid-state lasers.
- the measuring device 20 comprises a first receiver 22, which comprises a photosensitive, first sensor region 22 in an upper region of the lower elevator car A2.
- a first receiver 22 which comprises a photosensitive, first sensor region 22 in an upper region of the lower elevator car A2.
- sensor region 22 photodiodes, phototransistors or other photosensitive elements can be used.
- the first light source 21 is designed and arranged so that it emits a focused first beam in the form of a light beam Ll at a first angle Wl with respect to the direction of travel z.
- the light beam Ll is directed downward.
- the light beam Ll hits a wall of the elevator shaft 11 somewhere above the lower elevator car A2.
- the light beam Ll first hits the sensor portion 22 of the receiver.
- the first angle W1 is predetermined or adjusted such that, as the upper and lower elevator cars A1, A2 approach, the first light beam L1 strikes the first sensor region 22 as soon as the minimum distance S2 is reached.
- the light beam L1 is detectable by the first receiver 22, 24, and this receiver 22, 24 initiates a response R1, which is passed on to a controller or the like, for example, via a line 23.
- the present invention now allows various forms of implementation or expansion stages of the measuring device.
- a reaction can be triggered immediately upon first contact of the light beam L 1 with the sensor region 22.
- the sensor region 22 has a size - in the sense of surface area - which makes it possible to ensure that, despite the fluctuations in the elevator installation 10, reliable detection of the light beam L 1 by the receiver 22, 24 is possible ,
- FIG. 1 Another embodiment of the invention is indicated in FIG. In this figure, a snapshot is shown shortly after the light beam Ll was first detected by a photosensitive portion 22.1 of the sensor portion 22.
- the sections are preferably separately evaluable, ie they each have individual electrical connections.
- a corresponding evaluation system 24 (or 24 and 28 in the case of FIG. 3) is provided in order to implement an adapted reaction (R 1, R 2, R 3, R 4) as a function of of which it is possible to trigger on which of the sections 22.1 - 22. n the first light beam Ll hits.
- the measuring device can now be designed, programmed or set such that it hits the first time
- an advance warning is issued as a reaction or the elevator installation 10, respectively the elevator car A1 and / or A2 is transferred into a pre - warning mode
- a final reaction for example, an emergency stop by triggering the braking device or the safety brake of the upper and / or the lower elevator car Al, A2 .
- Measuring device can be identical, but sits quasi mirrored in the upper part of the lower elevator car A2.
- the corresponding second sensor area 26 sits in the lower area of the upper elevator car Al.
- the receivers trigger reactions in each case.
- the nature of the reactions differs depending on the embodiment, programming or setting of the devices.
- the receivers are capable of delivering signals or information via lines or other connections 23 or 27. These signals or information are then either processed before reactions are triggered, or they immediately trigger the responses, for example, by opening a switch that is part of a safety circuit.
- the elevator installation 10 has its own safety circuit per elevator car A1, A2, the safety circuit of the upper and / or lower elevator car A1, A2 can be interrupted by the receiver (s).
- An elevator installation 10 preferably has a separate safety circuit per elevator car A1, A2, in which a plurality of safety elements, such as safety contacts and switches, are arranged in a series connection.
- the corresponding elevator cabin Al or A2 can only be moved if the safety circuit and thus also all the safety contacts integrated in it are closed.
- the safety circuit is connected to the drive or the brake unit of the elevator installation 10 in order to interrupt the driving operation of the corresponding elevator car Al or A2, if such a reaction is desired.
- the invention can also be used in elevator systems which are equipped with a safety bus system instead of the mentioned safety circuit.
- the brakes of the respective elevator cars A1, A2 can also be triggered.
- any catch brakes of the respective elevator cars Al, A2 can be triggered.
- one or more of the following reactions can be triggered by the receivers 22, 24, or 26, 28:
- Prewarning condition adaptation of the vertical speed vi, v2 of at least one elevator car A1, A2. So you can realize with the invention, a distance control or a combined distance and speed control.
- angles W1, W2 can be adjusted in a range of 0 to 90 degrees with respect to the vertical direction z.
- the angles W1, W2 are in the range between 0 and 60 degrees, and more preferably between 10 and 50 degrees.
- the angle W1, W2 becomes a reference point or the operating state of the elevator installation 10 as a function of individual or a plurality of parameters, such as the position, speed or acceleration of an elevator car A1, A2, the distance, relative speed or relative acceleration of the elevator car A1, A2 , variable in time.
- the angle Wl, W2 can be set smaller, so that the light beam Ll, L2 falls on the receiver 22, 24 at an earlier point in time and thus increases an earlier time a reaction Rl, R2, R3, R4 can trigger. Accordingly, at a lower speed, the need for an early response Rl, R2, R3, R4 is reduced, and thus a larger angle Wl, W2 can be set.
- the relationship between acceleration and angle is analogous.
- the angle W1, W2 of the light beam L1, L2 can be increased already after the transfer of the elevator car A1, A2 into an inspection state, since the elevator car A1, A2 will only travel at reduced speed can.
- the position of the elevator cars A1, A2 serves, for example, to determine the time of a variable adjustment of the angle W1, W2. Accordingly, a critical distance between the elevator cars Al, A2 or between an elevator car Al, A2 and the shaft end is defined. If this value is undershot, the variable setting of the angle Wl, W2 begins.
- a second embodiment of the invention relates to an elevator system with an elevator car which is movable along a roadway or elevator shaft in the direction of travel.
- the elevator car Al according to the first embodiment, for example, equipped with a drive and a holding brake.
- a measuring device is provided which, for example, comprises a first electro-optical measuring device with a first transmitter, for example a light source, which is arranged in a lower region of the upper elevator car.
- the measuring device comprises a first receiver which comprises a photosensitive, first sensor region at the lower end of the roadway.
- the first light source is designed and arranged to emit a collimated first light beam at a first angle with respect to the direction of travel. In the example described, the light beam is directed downwards.
- a third embodiment of the invention relates to an elevator installation with an elevator car which is movable along a roadway or elevator shaft in the direction of travel.
- the elevator car according to the first embodiment for example, equipped with a drive and a holding brake.
- a measuring device is provided which, for example, comprises a first electro-optical measuring device with a first transmitter, for example a light source, which is arranged in the region of the upper shaft end.
- the measuring device comprises a first receiver which comprises a light-sensitive, first sensor region likewise spaced apart from the upper shaft end to the light source.
- the first light source is designed and arranged to emit a collimated first light beam at a first angle with respect to the direction of travel.
- the measuring device has a reflector which is arranged in the upper region of the elevator car.
- the position of the reflector is so determined that when approaching the elevator car to the upper shaft end of the light beam impinges on the reflector and is reflected by this to the receiver of the measuring device.
- the extent of the reflector and the photosensitive sensor area of the receiver are matched to one another, so that in the course of the approach of the elevator car to the upper shaft end, the light beam passes through the entire sensor area.
- the light beam is directed downwards between the light source and the reflector and, after the reflection, upwards towards the receiver.
- the light source and the receiver are arranged in the upper region of the elevator car and the reflector in the region of the upper shaft end.
- corresponding measuring devices can also be provided at the lower shaft end of the elevator shaft in order to prevent a dangerous approach of the elevator cage to the lower shaft end.
- the operating principle of the measuring device of the second and third embodiments is the same as in connection with the other embodiments. In this respect, the variants described above can be combined almost arbitrarily with each other.
Landscapes
- Indicating And Signalling Devices For Elevators (AREA)
- Elevator Control (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
- Measurement Of Optical Distance (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Cage And Drive Apparatuses For Elevators (AREA)
Abstract
Description
Claims
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/CH2008/000081 WO2009105903A1 (en) | 2008-02-29 | 2008-02-29 | Measuring apparatus for an elevator system and an elevator system having such a measuring apparatus |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2252537A1 true EP2252537A1 (en) | 2010-11-24 |
EP2252537B1 EP2252537B1 (en) | 2018-12-19 |
Family
ID=39926503
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08706381.4A Not-in-force EP2252537B1 (en) | 2008-02-29 | 2008-02-29 | Measuring apparatus for an elevator system and an elevator system having such a measuring apparatus |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP2252537B1 (en) |
CN (1) | CN101959782B (en) |
AR (1) | AR070723A1 (en) |
AU (1) | AU2008351663B2 (en) |
BR (1) | BRPI0822315B1 (en) |
TW (1) | TWI505983B (en) |
WO (1) | WO2009105903A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007055081B4 (en) | 2007-07-05 | 2013-11-07 | Johnson Controls Gmbh | Vehicle seat with securing means for a support element |
DE102010030436A1 (en) * | 2010-06-23 | 2011-12-29 | Thyssenkrupp Elevator Ag | elevator system |
CN102556784B (en) * | 2011-12-30 | 2014-01-08 | 日立电梯(上海)有限公司 | Elevator brake control device and control method thereof |
HUE027471T2 (en) | 2012-01-25 | 2016-09-28 | Inventio Ag | Safety device and control method for a lift system |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2211046A (en) * | 1987-10-10 | 1989-06-21 | Thames Valley Lift Company Lim | Lift movement monitoring |
US6079521A (en) * | 1998-11-24 | 2000-06-27 | Otis Elevator Company | Measuring elevator position with scanning laser beam |
US6279687B1 (en) * | 1999-10-01 | 2001-08-28 | Otis Elevator Company | Method and system for detecting objects in a detection zone using modulated means |
US6437315B1 (en) * | 2000-05-31 | 2002-08-20 | Otis Elevator Company | Radiation-based contactless position reference system and method for elevators |
US6554107B2 (en) * | 2001-09-27 | 2003-04-29 | Mitsubishi Denki Kabushiki Kaisha | Elevator system |
SG120250A1 (en) * | 2004-08-12 | 2006-03-28 | Inventio Ag | Elevator installation with a car and a device for determining a car position and method for operating such an elevator installation |
-
2008
- 2008-02-29 BR BRPI0822315-7A patent/BRPI0822315B1/en not_active IP Right Cessation
- 2008-02-29 EP EP08706381.4A patent/EP2252537B1/en not_active Not-in-force
- 2008-02-29 CN CN200880127617.2A patent/CN101959782B/en not_active Expired - Fee Related
- 2008-02-29 WO PCT/CH2008/000081 patent/WO2009105903A1/en active Application Filing
- 2008-02-29 AU AU2008351663A patent/AU2008351663B2/en not_active Ceased
-
2009
- 2009-02-25 TW TW098105937A patent/TWI505983B/en not_active IP Right Cessation
- 2009-02-27 AR ARP090100718A patent/AR070723A1/en unknown
Non-Patent Citations (1)
Title |
---|
See references of WO2009105903A1 * |
Also Published As
Publication number | Publication date |
---|---|
BRPI0822315A2 (en) | 2015-10-20 |
AU2008351663A1 (en) | 2009-09-03 |
WO2009105903A1 (en) | 2009-09-03 |
AR070723A1 (en) | 2010-04-28 |
BRPI0822315B1 (en) | 2019-07-02 |
EP2252537B1 (en) | 2018-12-19 |
TWI505983B (en) | 2015-11-01 |
AU2008351663B2 (en) | 2015-07-16 |
CN101959782A (en) | 2011-01-26 |
CN101959782B (en) | 2014-03-12 |
TW200944464A (en) | 2009-11-01 |
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