CN100391820C - Elevator cab locating system including wireless communication - Google Patents
Elevator cab locating system including wireless communication Download PDFInfo
- Publication number
- CN100391820C CN100391820C CNB028297296A CN02829729A CN100391820C CN 100391820 C CN100391820 C CN 100391820C CN B028297296 A CNB028297296 A CN B028297296A CN 02829729 A CN02829729 A CN 02829729A CN 100391820 C CN100391820 C CN 100391820C
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- Prior art keywords
- signal
- elevator
- transceiver
- lift car
- wireless telecommunications
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- Expired - Fee Related
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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
- B66B1/46—Adaptations of switches or switchgear
- B66B1/50—Adaptations of switches or switchgear with operating or control mechanisms mounted in the car or cage or in the lift well or hoistway
Abstract
The present invention relates to an elevator system (20) which comprises wireless communication parts (40, 42a-42c), wherein the wireless communication parts communicate with each other to give the position information of an elevator cage (22) in an elevator shaft (24). In the first embodiment, the first communication part (40) is supported on the elevator cage (22) and generates a triggering signal, and the triggering signal is received by the second communication part (42a-42c) along the selected position of the elevator shaft (24). The second communication part (42a-42c) generates an ultrasonic wave signal, and the ultrasonic wave signal is received by the first communication part (40). The position information relevant to the elevator cage in the elevator shaft is given by the characteristics of the received positioning signal such as the time selection of the triggering signal and the received positioning signal.
Description
Technical field
The present invention relates generally to elevator device, more specifically, the present invention relates to a kind of position fixing system that is used for determining the position of one or more elevator system components.
Background technology
Elevator device for example generally include one in building each stop position or different layers between in elevator mobile lift car.The needs that depend on particular case, a controller makes mechanical movement, lift car is moved to want the position that arrives in the elevator.Lift car is accurately moved to the stop position requirement determine location information.And also needing can be at any time, needn't moving elevator car with situation about determining under, determine the position of lift car in elevator.
At present proposed or implemented the layout of many definite elevator car positions.Most of such systems all have shortcoming, and promptly they are expensive.In addition, many this systems do not provide the level of accuracy of hope in the whole service life of system.Any system that requires periodical maintenance or maintenance has all caused the further additional cost that occurs do not wanted.Another difficulty relevant with known system is that they require a kind of special elevator or the equipment in the relative elevator widely.
An example system has adopted the coder that is connected on elevator motor, governor or the one or more pulley, and this layout is not wanted the particularity that reaches because the slip of associated components or mechanical wear always can not provide.In addition, should stop difference between the actual position in the adjustment district that puts in place with compensated encoder reading and lift car based on the adjustment algorithm of the system requirements relative complex of coder.Another shortcoming of some this type systematic is under the situation of power cut-off, can not determine the position of lift car in elevator at once.
Other system uses blade or other marker in elevator.This device has been introduced other parts, cost, material and labour, and may not be certain to provide the level of accuracy of wanting.
Though those skilled in the art always improves by every means, but the problem that has other will overcome.For example, the trial of adopting wireless signal to send the detection position has in the past suffered particularity, rate of replacement deficiency and the puzzlement of the expensive problem not wanting to occur.Exist a kind ofly, be used for determining the position of lift car in elevator reliable, economical, accurately and the demand of effective system.The present invention has satisfied this demand with unique mode, and has avoided shortcoming and defect of the prior art.
Summary of the invention
Generally speaking, the present invention is a kind of wireless communication arrangement, is used for determining the position of lift car in elevator.First communication device partly is bearing on the lift car, and second communication device partly is bearing in the select location in the elevator.In most of the cases, many second communication parts in a planned way are arranged on the key position along elevator.The wireless telecommunications of the distance between the indication communication part provide the information of relevant lift car position in elevator.
In example system of design-calculated according to the present invention, first communication part comprises first transceiver that is bearing on the lift car, this first transceiver produces energizing signal, and second communication part comprises second transceiver that is bearing in respect on the selected known location of elevator.This second transceiver responds described energizing signal and produces positioning signal, and first transceiver receives this positioning signal.A controller is determined the position of lift car in elevator according to the characteristic of the positioning signal that receives.
In one embodiment, energizing signal is a radiofrequency signal, and positioning signal is a ultrasonic signal.In one embodiment, receiving the used time of ultrasonic signal by first transceiver is exactly the characteristic that is used for determining the position of lift car in elevator.The known features of distance between first and second transceivers and ultrasonic locating signal provides the relation between selection of ultrasonic signal time of reception and the elevator car position.
In one embodiment, first transceiver part is carried out wireless telecommunications with the controller that carries out determining the position that is positioned at a distance.In another embodiment, first transceiver is connected to by rigid line and programmes with on the controller that carries out determining the position.
In one embodiment, each stop position along elevator all has a doorframe to support cooresponding second transceiver.Advantageously, second transceiver can be installed on the doorframe before being sent to the building locus.In this way, second transceiver can be controlled more economically and accurately with respect to the position of elevator.
The invention provides a kind of system of lift car in the position of elevator that be used for determining, it comprises first transceiver of supporting for moving with described lift car, and described first transceiver produces energizing signal; Be bearing in respect to second transceiver on the select location of described elevator, described second transceiver responds described energizing signal and produces positioning signal, and described first transceiver receives described positioning signal; And controller, described controller is determined the position of described lift car in described elevator based on the characteristic of the described positioning signal that receives; Wherein, described positioning signal is a ultrasonic signal; And wherein, be used for determining that the described characteristic of described positioning signal of the described position of described lift car is the modulation of at least one described positioning signal and the time that described positioning signal is propagated between described second transceiver and described first transceiver.
In other respects, described energizing signal is a radiofrequency signal.Described first transceiver comprises transmitter section, described transmitter section produces described energizing signal and pumping signal, described pumping signal is received by described second transceiver, and the described pumping signal that the described second transceiver utilization is used for producing electric energy produces described positioning signal.
The present invention also provides a kind of system of lift car in the position of elevator that be used for determining, it comprises first transceiver of supporting for moving with described lift car, and described first transceiver produces energizing signal; Be bearing in respect to second transceiver on the select location of described elevator, described second transceiver responds described energizing signal and produces positioning signal, and described first transceiver receives described positioning signal; And controller, described controller is determined the position of described lift car in described elevator based on the characteristic of the described positioning signal that receives; Wherein, described first transceiver comprises transmitter section, and described transmitter section produces described energizing signal and pumping signal, and described pumping signal is received by described second transceiver; Wherein, the described second transceiver utilization described pumping signal that is used for producing electric energy produces described positioning signal; Wherein, described energizing signal and described pumping signal comprise some simultaneously the emission radiofrequency signals, and one and then another is modulated.
In other respects, this system also comprises a plurality of second transceivers; Wherein each described second transceiver all has unique recognizer; Wherein said positioning signal comprises the information corresponding to described recognizer; And described controller uses described recognizer when determining the described position of described lift car.
The present invention further provides a kind of system of lift car in the position of elevator that be used for determining, it comprises first transceiver of supporting for moving with described lift car, and described first transceiver produces energizing signal; A plurality of being bearing in respect to second transceiver on the select location of described elevator, described second transceiver respond described energizing signal and produce positioning signal, and described first transceiver receives described positioning signal; And controller, described controller is determined the position of described lift car in described elevator based on the characteristic of the described positioning signal that receives; Wherein, each described second transceiver all has unique recognizer; Wherein, described positioning signal comprises the information corresponding to described recognizer; And described controller uses described recognizer when determining the described position of described lift car; And wherein, between the initial rising and/or decrement phase of described lift car in described elevator, described controller is learnt the identification of each described second transceiver.
The present invention provides a kind of elevator device in addition, and it comprises and is applicable in elevator the lift car that moves; The first wireless telecommunications part of supporting for moving with described lift car, the described first wireless telecommunications part transmitting wireless signals; A plurality of being bearing in respect to the second wireless telecommunications part on the select location of described elevator, each described the secondth wireless telecommunications partly is configured to transmission ultrasonic locating signal, and described second wireless telecommunications part of the described first wireless telecommunications partial sum is the wireless and ultrasonic signal of transmission each other; And controller, described controller uses determines the position of described lift car in described elevator about the information of the wireless telecommunications between the described communication part; Wherein, the characteristic of described positioning signal that is used for determining the described position of described lift car is the modulation of at least one described positioning signal and the time that described positioning signal is propagated between described first wireless telecommunications part of the described second wireless telecommunications partial sum.
In other respects, this system also comprises a plurality of being suitable for along the doorframe of described elevator supporting, and in wherein said second wireless telecommunications part at least one is bearing on each described doorframe.Described first wireless telecommunications comprise that partly the emitter and the described energizing signal of the wherein said second wireless telecommunications partial response that transmit energizing signal produce described positioning signal.Described energizing signal is a radiofrequency signal.Described first wireless telecommunications partly produce pumping signal, and described pumping signal is partly received by a producer in described second wireless telecommunications part, and described producer part produces electric energy to launch described positioning signal based on described pumping signal.Each described second wireless telecommunications partly has unique recognizer, and wherein said positioning signal comprises the information corresponding to described recognizer.
The present invention also provides a kind of method of determining the position of lift car in elevator in elevator device, described elevator device has the first wireless telecommunications part of supporting for moving with described lift car, and at least one is positioned at the second wireless telecommunications part with respect to the select location of described elevator, and described method comprises the following steps to utilize described first wireless telecommunications partly to produce energizing signal; Utilize the described energizing signal of the described second wireless telecommunications partial response to produce the ultrasonic locating signal; The characteristic of the described positioning signal that is received based on described first wireless telecommunications part is determined the position of described lift car in described elevator; Wherein, the described characteristic of described positioning signal that is used for determining the described position of described lift car is the modulation of at least one described ultrasonic locating signal and the time that described ultrasonic locating signal is propagated between the described wireless telecommunications part of the described second wireless telecommunications partial sum.
In other respects, described energizing signal is a radiofrequency signal.The step of this method comprises makes unique recognizer be associated with in a plurality of described second wireless telecommunications parts each; And discern described ultrasonic locating signal with described unique recognizer.The step of this method also comprises uses described first wireless telecommunications partly to produce pumping signal; And change described pumping signal into electric energy in described second wireless telecommunications part, to produce described ultrasonic locating signal.
From the detailed description of following presently preferred embodiment, various features and advantages of the present invention will seem very clear for those skilled in the art.Drawings that accompany the detailed description can be briefly described as follows.
Description of drawings
Fig. 1 schematically expresses the elevator device that comprises according to design-calculated registration device of the present invention; And
Fig. 2 schematically expresses two communication parts and the wireless telecommunications between the two in the design-calculated example system according to the present invention.
The specific embodiment
Fig. 1 has schematically shown an elevator device 20, and wherein lift car 22 moves in elevator 24 in a conventional manner.Situation is such just as is known, and lift car 22 preferably moves to each stop position 26,29 and 30, for example transport of passengers or goods between the different layers of a building.
Machine (not shown) of controller 32 controls, this machine makes lift car 22 carry out desirable moving in elevator 24.Lift car 22 uses known parts (not shown) to be bearing in a known way in the elevator 24.
A plurality of second communication parts 42 (in Fig. 1, individually being labeled as " 42A ", " 42B " and " 42C ") be bearing in along on the select location of elevator 24 so that the location information of lift car to be provided, as mentioned below.In the embodiment of explanation, each second communication part 42 is bearing on the doorframe 36 that comprises known elements.An advantage of system of the present invention is that second communication part 42 before being transported to the building locus that elevator device 20 is installed, can be installed in ready-made in advance each doorframe.By second communication part 42 is installed by this way in advance, can realize the economical and practical of many systems.For example, layout of the present invention does not require any modification at the elevator of elevator device place of erection or special erecting device.First communication part 40 can be installed on the lift car in advance, and second communication part 42 can be installed on the doorframe in advance.
In the embodiment of explanation, the module 44 on the car on first communication part 40 and the lift car 22 is associated.In Fig. 1, schematically shown attaching parts 46, be used for representing that power supply connects, communication connects or represent the two simultaneously.In one embodiment, first communication part 40 is hardwired on the module 44 to receive electric energy.In one embodiment, the communication of the signal of indicating elevator car position is also finished by a hardwired connection.In another embodiment, the communication between the module 44 on first communication part 40 and the car is wireless telecommunications.
Fig. 2 has schematically illustrated an example communication strategy in system designed according to this invention.First communication part 40 comprises a transceiver with transmitter section 50.In one embodiment, transmitter section 50 produces the radio-frequency communication signal 52 that sends to second communication part 42.
In the embodiment of explanation, radiofrequency signal 52 has first 54, and it is received by producer (or power generator) part 56 of second communication part 42.The known elements that this producer part 56 preferably includes received RF signal and is translated into useful capacity.In other embodiments, second communication part 42 provides the energy by the combination of battery, building power supply (hard-wired) or these known power source.
The second portion of radiofrequency signal 52 is energizing signal 58, and this energizing signal 58 is received by binary pair part 60.Transmitter section 50 produces energizing signal 58, thereby makes second communication part, the 42 response energizing signal 58 in the selected scope that is in lift car 22 produce a positioning signal.In this way, the example embodiment of system of the present invention will be restricted near only those lift car 22 is selected from the expenditure of energy and the signal generation of second communication part 42, and this makes exemplary arrangement more effective.
Based on energizing signal 58, binary pair part 60 preferably makes the transmitter section 62 of second communication part 42 produce a positioning signal 64, and this positioning signal 64 is received by the receiver section 66 of first communication part 40.In the embodiment of explanation, each second communication part 42 all has a unique recognizer, and positioning signal 64 preferably includes the information corresponding to the identification of the parts that send signal.With reference to figure 1, for example, the second communication part 42A has and is different from the recognizer relevant with 42B or 42C.Preferably select an enough big cover recognizer to guarantee uniqueness.
In one example system designed according to this invention, transmitter section 62 each energizing signal of response send the multichannel positioning signal.In this embodiment, positioning signal is made up to determine the position.This layout has the advantage that increases SNR, location accuracy or strengthen two specific characters simultaneously.
Presently preferred embodiment comprises the ultrasonic emitting machine as transmitter section 62.Accordingly, positioning signal 64 is ultrasonic signals, and this signal is propagated with known speed in elevator.Receive time selection between the positioning signal based on energizing signal 58 with by receiver 66, can determine the position of first communication part 40 with respect to the second suitable communication part 42.Location information also provides the position of lift car 22 in elevator, because the position of first communication part 40 on lift car 22 is known with respect to the structure of lift car.In one embodiment, additional system parameter, for example elevator car speed and local temperature etc. estimate from positioning signal 64, to improve the particularity of fixed elevator car position.
Super sonic is preferred, provides the most accurate position to determine because it is believed that ultrasonic wave energy.The example of other types of electromagnetic energy also can be used for system designed according to this invention, for example radiofrequency signal, microwave signal, infrared signal, ultraviolet light or transmission of visible light signal etc.The those skilled in the art who benefits from this specification sheets can select their specific occasion is carried out the type of the signal and the modulation strategy of best effort.
Along with lift car 22 moves in elevator or keeps static, location information can be undertaken determining continuously by controller 32 as required.
In one embodiment, one second communication part 42 is relevant with each stop along elevator.Between second communication part, provide about 3.5 meters distance with separating of second communication part in this way.This has produced certain advantage, has for example limited the expenditure of energy of ultrasonic emitting machine 62.Because only trigger several second communication parts 42 in any given time, so the disturbance variable between the super sonic has obtained minimizing.Another advantage is that the time-delay relevant with ultrasonic transmission is reduced, and in an embodiment system its less than 10 milliseconds.And, because time-delay (relevant with the distance between communication part 40 and 42) becomes less, so, can realize higher position renewal rate along with lift car 22 is adjusted district's (that is, stopping the district) near each.In system designed according to this invention, second communication part 42 in a planned way is arranged in along the key position of elevator makes the resolution can be in 1 millimeter scope.For example, 1/340 millisecond of resolution time meter buying makes system of the present invention can very accurately calculate the distance that ripple is propagated marked downly, thus the position of very accurately calculating lift car.
Significant advantage of the present invention comprises and does not require elevator or apparatus are made amendment.Layout of the present invention can be used for any various types of elevators system.Wireless communication arrangement of the present invention further provides better particularity in whole elevator, in the higher position renewal rate of lift car during near stop position, and the location information that lift car is provided continuously to controller as required.
In case install doorframe 36, and all other parts operate all, lift car 22 can move in elevator under the situation of understanding pattern with controller 32 so, thereby can check the position and the identification of each second communication part 42.After single understanding pattern was finished, controller 32 can be determined according to the desired position of carrying out repeatedly subsequently, with the elevator system operation that realizes wishing.
Top explanation is exemplary and not restrictive in itself.For the change of embodiment disclosed by the invention with revise and will seem for those skilled in the art and know better, and it can not depart from aim of the present invention.Scope of legal protection given to this invention can only be determined by considering the following rights requirements.
Claims (16)
1. one kind is used for determining the system of lift car (22) in the position of elevator (24), and it comprises:
First transceiver (40) of supporting for moving with described lift car (22), described first transceiver produces energizing signal (58) and pumping signal (54);
Be bearing in respect to second transceiver (42) on the select location of described elevator (24), described second transceiver (42) responds described energizing signal (58) and produces positioning signal (64), and described first transceiver (40) receives described positioning signal (64); With
Controller (32), described controller is determined the position of described lift car (22) in described elevator (24) based on the characteristic of the described positioning signal (64) that receives;
Wherein, described positioning signal (64) is a ultrasonic signal;
Wherein, be used for determining that the described characteristic of described positioning signal (64) of the described position of described lift car (22) is the modulation of described positioning signal (64), and
Wherein, described energizing signal (58) and described pumping signal (54) comprise simultaneously the radiofrequency signal of emission, and one and then another is modulated.
2. the system as claimed in claim 1 is characterized in that, described energizing signal (58) is a radiofrequency signal.
3. the system as claimed in claim 1, it is characterized in that, described first transceiver (40) comprises transmitter section (50), described transmitter section (50) produces described energizing signal (58) and pumping signal (54), described pumping signal (54) is received by described second transceiver (42), and the described pumping signal (54) that the described second transceiver utilization is used for producing electric energy produces described positioning signal (64).
4. one kind is used for determining the system of lift car (22) in the position of elevator (24), and it comprises:
First transceiver (40) of supporting for moving with described lift car (22), described first transceiver produces energizing signal (58);
Be bearing in respect to second transceiver (42) on the select location of described elevator (24), described second transceiver (42) responds described energizing signal (58) and produces positioning signal (64), and described first transceiver (40) receives described positioning signal (64); With
Controller (32), described controller is determined the position of described lift car (22) in described elevator (24) based on the characteristic of the described positioning signal (64) that receives;
Wherein, described first transceiver (40) comprises transmitter section (50), and described transmitter section produces described energizing signal (58) and pumping signal (54), and described pumping signal (54) is received by described second transceiver (42);
Wherein, described second transceiver (42) the described pumping signal (54) that is used for producing electric energy produces described positioning signal (64); With
Wherein, described energizing signal (58) and described pumping signal (54) comprise some simultaneously the emission radiofrequency signals, and one and then another is modulated.
5. the system as claimed in claim 1 is characterized in that, it also comprises:
A plurality of second transceivers (42A, 42B, 42C);
Wherein each described second transceiver (42A, 42B, 42C) all has unique recognizer;
Wherein said positioning signal (64) comprises the information corresponding to described recognizer; And
Described controller (32) uses described recognizer when determining the described position of described lift car (22).
6. one kind is used for determining the system of lift car (22) in the position of elevator (24), and it comprises:
First transceiver (40) of supporting for moving with described lift car (22), described first transceiver produces energizing signal (58);
A plurality of being bearing in respect to second transceiver on the select location of described elevator (24) (42A, 42B, 42C), described second transceiver (42A, 42B, 42C) responds described energizing signal (58) and produces positioning signal (64), and described first transceiver (40) receives described positioning signal (64); With
Controller (32), described controller is determined the position of described lift car (22) in described elevator (24) based on the characteristic of the described positioning signal (64) that receives;
Wherein, each described second transceiver (42A, 42B, 42C) all has unique recognizer;
Wherein, described positioning signal (64) comprises the information corresponding to described recognizer; And
Described controller (32) uses described recognizer when determining the described position of described lift car (22); And
Wherein, between the initial rising and/or decrement phase of described lift car (22) in described elevator (24), described controller (32) is learnt the identification of each described second transceiver (42A, 42B, 42C).
7. an elevator device (20), it comprises:
Be applicable to the lift car (22) that in elevator (24), moves;
The first wireless telecommunications parts (40) of supporting for moving with described lift car (22), described first wireless telecommunications part (40) transmitting wireless signals (52), it comprises energizing signal (58) and pumping signal (54), wherein, and then another is modulated for (54) one of energizing signal (58) and pumping signals;
A plurality of being bearing in respect to the parts of second wireless telecommunications on the select location of described elevator (42A, 42B, 42C), each described second wireless telecommunications partly is configured to transmission ultrasonic locating signal (64), described first wireless telecommunications parts (40) and described second wireless telecommunications parts (42A, 42B, 42C) are transmitted wireless and ultrasonic signal (52,64) each other; With
Controller (32), described controller use about the information of the wireless telecommunications between the described communication part (40,42A, 42B, 42C) determines the position of described lift car (22) in described elevator (24);
Wherein, the characteristic of described positioning signal (64) that is used for determining the described position of described lift car (22) is the modulation of described positioning signal (64).
8. system as claimed in claim 7 is characterized in that it also comprises:
A plurality of being suitable for along the doorframe (36) of described elevator (24) supporting, and
In wherein said second wireless telecommunications parts (42A, 42B, 42C) at least one is bearing on each described doorframe (36).
9. system as claimed in claim 7, it is characterized in that, described first wireless telecommunications parts (40) comprise that the emitter (50) of transmission energizing signal (58) and the described energizing signal of wherein said second wireless telecommunications parts (42A, 42B, 42C) response produce described positioning signal (64).
10. system as claimed in claim 7 is characterized in that, described energizing signal (58) is a radiofrequency signal.
11. system as claimed in claim 9, it is characterized in that, described first wireless telecommunications parts (40) produce pumping signal (54), described pumping signal (54) is received by the producer part (56) in described second wireless telecommunications parts (42A, 42B, 42C), and described producer part (56) produces electric energy to launch described positioning signal (64) based on described pumping signal.
12. system as claimed in claim 9 is characterized in that, each described second wireless telecommunications part (42A, 42B, 42C) has unique recognizer, and wherein said positioning signal (64) comprises the information corresponding to described recognizer.
13. method of in elevator device (20), determining the position of lift car (22) in elevator (24), described elevator device (20) has the first wireless telecommunications parts (40) of supporting for moving with described lift car, and at least one is positioned at second wireless telecommunications parts (42) with respect to the select location of described elevator (24), and described method comprises the following steps:
Utilize described first wireless telecommunications parts (40) to produce radio frequency energizing signal (58) and rf excitation signal (54);
One and then another modulates energizing signal (58) and pumping signal (54);
Utilize described second wireless telecommunications parts (42) to respond described energizing signal (58) and produce ultrasonic locating signal (64);
The characteristic of the described positioning signal (64) that is received based on described first wireless telecommunications parts (40) is determined the position of described lift car (22) in described elevator;
Wherein, the described characteristic of described positioning signal (64) that is used for determining the described position of described lift car (22) is the modulation of described positioning signal (64).
14. method as claimed in claim 13 is characterized in that, described energizing signal (58) is a radiofrequency signal.
15. method as claimed in claim 13 is characterized in that, its step comprises makes unique recognizer be associated with in a plurality of described second wireless telecommunications parts (42A, 42B, 42C) each; And
Discern described ultrasonic locating signal (64) with described unique recognizer.
16. method as claimed in claim 13 is characterized in that, its step comprises uses described first wireless telecommunications parts (40) to produce pumping signal (54); And
Change described pumping signal (54) into electric energy in described second wireless telecommunications parts (42), to produce described ultrasonic locating signal (64).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/US2002/032188 WO2004033352A1 (en) | 2002-10-08 | 2002-10-08 | Elevator cab locating system including wireless communication |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1684895A CN1684895A (en) | 2005-10-19 |
| CN100391820C true CN100391820C (en) | 2008-06-04 |
Family
ID=32092088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB028297296A Expired - Fee Related CN100391820C (en) | 2002-10-08 | 2002-10-08 | Elevator cab locating system including wireless communication |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP2006502064A (en) |
| CN (1) | CN100391820C (en) |
| AU (1) | AU2002368168A1 (en) |
| HK (1) | HK1081934A1 (en) |
| WO (1) | WO2004033352A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4940895B2 (en) * | 2006-10-31 | 2012-05-30 | 株式会社日立製作所 | Elevator |
| US11535488B2 (en) | 2017-08-28 | 2022-12-27 | Otis Elevator Company | Elevator position detection systems |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4375057A (en) * | 1980-12-10 | 1983-02-22 | Otis Elevator Company | Position sensor |
| ATE43822T1 (en) * | 1985-08-22 | 1989-06-15 | Inventio Ag | DEVICE ON AUTOMATIC DOORS TO DETECT OBSTACLES. |
| US5306882A (en) * | 1991-05-13 | 1994-04-26 | Otis Elevator Company | Measuring elevator hoistway position using audible signals |
| DE4426793C1 (en) * | 1994-07-28 | 1995-10-26 | Schmersal K A Gmbh & Co | Position measurement appts. for e.g. elevator or lift shaft |
| US5883345A (en) * | 1997-12-23 | 1999-03-16 | Otis Elevator Company | Sonic position measurement system |
| JPH11314868A (en) * | 1998-04-28 | 1999-11-16 | Toshiba Elevator Co Ltd | Car load detecting device of elevator |
-
2002
- 2002-10-08 AU AU2002368168A patent/AU2002368168A1/en not_active Abandoned
- 2002-10-08 CN CNB028297296A patent/CN100391820C/en not_active Expired - Fee Related
- 2002-10-08 JP JP2004542985A patent/JP2006502064A/en active Pending
- 2002-10-08 WO PCT/US2002/032188 patent/WO2004033352A1/en active Application Filing
-
2006
- 2006-02-16 HK HK06102019.7A patent/HK1081934A1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| HK1081934A1 (en) | 2006-05-26 |
| WO2004033352A9 (en) | 2005-06-02 |
| AU2002368168A1 (en) | 2004-05-04 |
| JP2006502064A (en) | 2006-01-19 |
| CN1684895A (en) | 2005-10-19 |
| WO2004033352A1 (en) | 2004-04-22 |
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