WO2003043920A1 - Sequence d'impulsions arythmique pour mesurer une distance sonore - Google Patents

Sequence d'impulsions arythmique pour mesurer une distance sonore Download PDF

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Publication number
WO2003043920A1
WO2003043920A1 PCT/US2002/032907 US0232907W WO03043920A1 WO 2003043920 A1 WO2003043920 A1 WO 2003043920A1 US 0232907 W US0232907 W US 0232907W WO 03043920 A1 WO03043920 A1 WO 03043920A1
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WO
WIPO (PCT)
Prior art keywords
signal
pulses
sound
pulse
propagation time
Prior art date
Application number
PCT/US2002/032907
Other languages
English (en)
Inventor
Uwe Schonauer
Peter L. Herkel
Original Assignee
Otis Elevator Company
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Otis Elevator Company filed Critical Otis Elevator Company
Priority to JP2003545567A priority Critical patent/JP4399264B2/ja
Priority to US10/490,071 priority patent/US7204347B2/en
Publication of WO2003043920A1 publication Critical patent/WO2003043920A1/fr
Priority to HK06103099.8A priority patent/HK1083093A1/xx

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B1/00—Control systems of elevators in general
    • B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
    • B66B1/3492—Position or motion detectors or driving means for the detector

Definitions

  • the invention relates to a position detecting device for detecting the position of an object movable along a predetermined path of movement, in particular an elevator car of a motor-driven elevator, comprising a signal transmission medium extending along the path of movement, a signal generator movable together with said movable object, by means of which a signal can be coupled into the signal transmission medium at a coupling location thereof changing in accordance with the movement of said signal generator, at least one signal receiver at an extraction location at an end point of said path of movement, by means of which the signal can be extracted from the signal transmission medium, a signal propagation time measuring means adapted to determine the signal propagation time between coupling location and extraction location by evaluating the signal extracted at the ex- traction location, and a processing means adapted to derive from the signal propagation time ascertained a position signal indicating the instantaneous position of the object along the path of movement.
  • the documents EP O 694 792 Al and the corresponding US 5 736 695 A reveal such a device using ultrasonic energy.
  • a sound signal generator at the elevator car couples sound pulses into a sound conductor, for example in the form of a metal wire.
  • a receiver at the upper or lower end of the elevator path receives the sound pulses.
  • the measuring means must be capable of unequivocally associating a sound pulse received at the end of the elevator path with a specific transmitted pulse.
  • synchronization pulses are transmitted in addition to these measurement pulses, with the distances in time between the same being greater than the maximum propagation time of a sound pulse from one end to the other end of the sound conductor and with these synchronization pulses being different from the measurement pulses by a predetermined feature.
  • each synchronization pulse has a time interval from the measurement pulses adjacent the same, which is different from the time interval between adjacent measurement pulses.
  • the respective synchronization pulse is in the middle of the time interval between two adjacent measurement pulses.
  • This method is not without disadvantages, either.
  • an association of a receiving pulse with a specific transmission pulse is possible only after arrival of the corresponding synchronization pulse.
  • this method is sensitive to disturbances due to reflected pulses, especially with regard to the fact that the received pulses usually do not have ideal pulse edges, but impaired pulse edges. Reflections are caused, for example, in that the sound conductor indeed is terminated at both ends thereof by attenuation members, but these do not completely absorb the sound pulses, but reflect the same in part. Such reflections have the result that pulses not belonging to the same transmission pulse meet at specific locations along the sound conductor. If disturbing interference arises between transmission pulses and reflection pulses at a specific location along the sound conductor, this interference holds for all measurement pulses, due to the same time interval between the measurement pulses.
  • the hardware and software requirements for the evaluation algorithm are determined by the smallest time interval between two adjacent pulses. The shorter this interval, the higher the processing clock rate needs to be and the higher the requirements for hardware and software and thus for the costs for the same. Due to the fact that, in the known method, the respective synchronization pulse is placed between the two measurement pulses adjacent the same, hardware and software have to be designed for a processing rate corresponding to the brief distances or intervals in time between a synchronization pulse and the measurement pulses adjacent the same. Hardware and software thus need to be of more complex design than required for processing of the measurement pulses alone. I.e., for processing the measurement pulses proper, it would be sufficient to have hardware and software that could be much less complex if there were no synchronization pulses.
  • the invention provides a position detecting device for detecting the position of an object movable along a predetermined path of movement, comprising a signal transmission medium extending along the path of movement, a signal generator movable together with said movable object, by means of which a signal can be coupled into the signal transmission medium at a coupling location thereof changing in accordance with the movement of said signal generator, at least one signal receiver at an extraction location at an end point of said path of movement, by means of which the signal can be extracted from the signal transmission medium, a signal propagation time measuring means adapted to determine the signal propagation time between coupling location and extraction location by evaluating the signal extracted at the extraction location, and a processing means adapted to derive from the signal propagation time ascertained a position signal indicating the instantaneous position of the object along the path of movement.
  • the position detecting device distinguishes itself in that the signal generator thereof delivers a periodically repeating signal pulse sequence in which the time intervals between consecutive signal pulses are different for each pair of consecutive signal pulses each, that the period duration of the repetitive signal pulse sequence is greater than the maximum signal propagation time with maximum distance between coupling location and extraction location, and in that the time intervals between consecutive signal pulses are shorter than the maximum signal propagation time.
  • the present invention makes use of a periodically repeating arrhythmic pulse sequence for being able to unequivocally associate the receiving signals, which successively arrive at the signal receiver, with the respectively associated transmission pulses of the signal generator. Due to the fact that the period duration, i.e. the time interval between the periodically repeating pulse sequences, is greater than the maximum signal propagation time occurring with maximum distance between coupling location and extraction location, there are, at a particular moment of time, always only such pulses in the signal transmission medium that belong to the same pulse sequence. Due to the fact that a predetermined time interval from the preceding pulse is associated exclusively with one specific pulse of the respective pulse sequence, each receiving pulse occurring at the signal receiver can be associated unequivocally with one specific transmission pulse transmitted by the signal generator.
  • the minimum time interval between respective adjacent pulses may remain in an order of magnitude that is considerably greater than the time interval present in the synchronization pulses of the position detecting device according to DE 199 03 645 Al with respect to the measurement pulses adjacent the same.
  • the position detecting device can make do with hardware and software that are less complex than required in case of DE 19903645 Al.
  • the sequence of the different time intervals between each pair of consecutive pulses each of a pulse sequence is selected such that the time intervals between non-adjacent pulses of the pulse sequence, e.g. between first and third, second and fifth, third and sixth pulses of the pulse sequence or first and fifth, second and sixth, third and seventh, etc., pulses of a pulse sequence for each particular pair of non- adjacent pulses of the pulse sequence are different as well.
  • the advantageous result hereof is that, even if part of the pulses of a pulse sequence fails to be usable for position detection due to disturbances, the remaining pulses on the receiving side still can be associated unequivocally with the respectively related transmission pulses. Thus, in this case, too, secure calculation of the signal propagation time between the instantaneous position of the signal generator and the position of the signal receiver can be ensured.
  • the signal is constituted by a sound signal, in particular an ultrasonic signal
  • the signal transmission medium is constituted by a sound conductor, in particular a metal rail, a metal rope or a metal wire
  • the signal generator is constituted by a sound signal generator
  • the signal receiver is constituted by a sound signal receiver
  • the signal propagation time measuring means is constituted by a sound propagation time measuring means.
  • other signal transmission media for example optical waveguides, electric waveguides or air clearances via which sound pulses, light pulses or radio-frequency pulses can be transferred.
  • one single signal receiver at an end of the path of movement, with the respective instantaneous position of the movable object being determined on the basis of the signal propagation time between signal generator and receiver as being the distance between the movable object from that end of the path of movement where the sole signal receiver is located.
  • the receiving signals received at the two signal receivers are fed to a common processing means, as is known per se from EP 0 694 792 Al, and in said processing means there is formed the difference between the moments of time at which the receiving signals are delivered by the two signal receivers. From this difference in time, the instantaneous position of the movable object can be concluded.
  • a time difference of zero between the two receiving signals means that the movable object is exactly in the middle between the positions of the two signal receivers.
  • each of the signal receivers has a signal propagation time measuring means associated therewith through which the signal propagation time of the receiving signal arriving at one of the two signal receivers is determined independently of that of the receiving signal arriving at the other signal receiver.
  • each of the two signal propagation time measuring means in addition to the receiving signal delivered by the respectively associated signal receiver, is directly fed with the transmission signal of the signal generator.
  • Each signal propagation time measuring means by way of a comparison of the two signals delivered thereto, thus can determine the signal propagation time via the signal transmission medium from the instantaneous position of the signal generator to the position of the associated signal receiver.
  • FIG. 1 shows an embodiment of an elevator system comprising a position detecting device according to the invention
  • Fig. 2 shows an embodiment of an arrhythmic pulse sequence according to the invention
  • FIG.3 shows block diagram of an apparatus for detecting a pulse identification number
  • Fig. 4 shows two pulses of a pulse sequence (a) according to the invention and a clock pulse sequence (b).
  • a position detecting device for an elevator system namely for detecting the position of an elevator car 12 movable along an elevator path.
  • sound conductors of other materials than metal are suitable as well, such as e.g. sound conductors of hard plastics material.
  • the sound conductor 13 extends from a lower end to an upper end of the elevator hoistway.
  • a signal generator 15 movable together with the elevator car 12 and comprising a signal generating means for generating electric transmission pulses on the side of the signal generator as well as a signal transducer on the side of the signal generator for converting the electric transmission pulses into sound pulses.
  • This signal transducer feeds a signal coupler 17 movable along the sound conductor 13 and adapted to couple the sound pulses into the sound conductor 13. From the particular location of the signal coupler 17, the sound pulses travel, at the speed of sound inherent to sound conductor 13, both to an upper end 19 and to a lower end 21 of sound conductor 13, which is illustrated in Fig. 1 by upwardly traveling sound pulses 23 and downwardly traveling sound pulses 25.
  • an upper signal extractor 27 which feeds the sound signals 23 coupled out or extracted by the same to an upper signal receiver 29 by means of which the extracted sound pulses 23 are converted into electric receiving pulses.
  • a lower signal extractor 31 by means of which the downwardly traveling sound pulses 25 are extracted from the sound conductor 13.
  • the lower signal extractor 31 feeds a lower signal receiver 22 by means of which the sound pulses extracted from sound conductor 13 are converted into electric receiving pulses.
  • the two signal extractors 27 and 31 are mounted in stationary fashion, i.e. so as to be immovable relative to sound conductor 13.
  • the upper signal receiver 29 and the lower signal receiver 33 supply their receiving pulses to an upper signal propagation time measuring means 35 and a lower signal propagation time measuring means 37, respectively.
  • the two signal propagation time measuring means 35 and 37 are each connected via an electric line 39 to the signal generating means of signal generator 15.
  • the latter feeds the electric transmission pulses generated by the signal generating means into the electric lines 39, with these pulses being passed from the feeding location thereof to the signal propagation time measuring means 35 and 37 via the electric lines 39, which is illustrated in Fig. 1 by way of electric transmission pulses 41 directed towards the upper signal propagation time measuring means 35 and electric pulses 43 directed towards the lower signal propagation time measuring means 37.
  • the upper signal propagation time measuring means 35 determines the sound propagation time of the upwardly traveling sound pulses 23 from signal coupler or injector 17 to the upper signal extractor 27 by way of a comparison of the electric receiving signals delivered by the upper signal receiver 29 and the upwardly directed electric transmission pulses 41 delivered by the signal generating means.
  • the lower signal propagation time measuring means 37 determines the sound propagation time of the downwardly traveling sound pulses 25 from the respective position of sound coupler 17 to the position of the lower signal extractor 31, by comparing the moments of time of the arrival of the electric receiving pulses delivered by lower signal receiver 33 with the moment of time of arrival of the electric transmission pulses 43 directed downwardly from the signal generator 15.
  • the time interval present between the electric receiving pulses delivered by signal receivers 29 and 33 and the electric transmission pulses 41 and 43, respectively, is a measure of the sound propagation time of the sound pulses 23 and 25, respectively, from the respective position of the signal generator 15 to the upper signal extractor 27 and the lower signal extractor 31, respectively.
  • the signal propagation times ascertained by the two signal propagation time measuring means 35 and 37 are supplied to a processing means 45 by means of which the instantaneous position of the signal generator 15 and thus the instantaneous position of the elevator car 12 are detected.
  • the processing means 45 determines the instantaneous distance of the elevator car 12 from the upper signal extractor 27, and on the basis of the signal propagation time delivered by the lower signal propagation time measuring means 37, the processing means 45 calculates the instantaneous distance of the elevator car 12 from the lower signal extractor 31.
  • the instantaneous position of the elevator car 12 determined by the processing means 45 is transferred to an elevator control 47 which controls in particular moving and stopping of the elevator car 12 as well as opening of elevator doors (not shown).
  • the processing means 45 is capable of calculating also the overall distance between the two signal extractors 27 and 31.
  • Fig. 2 illustrates, by way of an embodiment of the invention, a pulse sequence with 11 pulses having identification numbers 1 to 11, with said pulse sequence being repetitive with a period duration of 33 ms.
  • a pulse sequence of such period duration is designed, for example, for an elevator system having a length of the movement path of the elevator car 12 of 130 m. With an assumed sound propagation time of 20 ms for each 100 m in the metallic sound conductor 13, a pulse sequence with a period duration of 33 ms would be suitable for movement path lengths of up to 160 m.
  • Fig. 2 shows the time intervals or interval lengths between two adjacent pulses each in ms.
  • the time intervals between successive signal pulses are different for each pair of successive signal pulses of the pulse sequence each.
  • each of the eleven pulses of a pulse sequence is defined unequivocally by its time interval with respect to the particular preceding pulse.
  • the period duration of the periodically repeating signal pulse sequence is chosen such that it is greater than the maximum sound propagation time occurring between the two signal extractors 27 and 31, the sound conductor 13 at all times can carry only such sound pulses that belong to the same pulse sequence.
  • the two signal propagation time measuring means 35 and 37 are each provided with a means for determining the pulse identification number of the respective receiving pulse, by ascertaining the time interval between the just arrived receiving pulse and a receiving pulse ahead of the same in terms of time.
  • each of the two signal propagation time measuring means 35 and 37 may be provided with a pulse identification number determining means having the structure shown in Fig. 3.
  • This pulse identification number determining means comprises a counter 49, a memory 51 having at least one electronic table stored therein, and an AND circuit A3 and possibly a delay member ⁇ in the wiring arrangement as shown in Fig. 3.
  • Counter 49 has a first input, designated counting start, a second input designated clock input as well as a reset input. Applied to the counting start input are the electric signal pulses delivered by signal receiver 29 and 31 , respectively.
  • the clock input is connected to a clock generator the clock pulses of which are counted by counter 49.
  • Counter 49 has furthermore an output from which the respective count reached is available AND circuit A3 is fed with the count of counter 49 via a first input and with the signal pulses via a second input.
  • the output signal of AND circuit A3 is fed to memory 51 as input signal.
  • the pulse identification number of the receiving pulses that arrived last is available at an output of memory 51.
  • Fig. 4a illustrates two pulses of the pulse sequence shown in Fig. 2 and Fig. 4b illustrates clock pulses.
  • running time measurement makes use of a microcontroller which in terms of software is programmed so as to control the sequence in time mentioned, namely first reading out of the counting value and then resetting of counter 49.
  • the AND circuit A3 and the delay member ⁇ are not necessary in this event.
  • Stored in memory 51 is an electronic table associating the corresponding pulse identification number with each of the interval values of the pulse sequence in Fig. 2 and thus unequivocally identifying the receiving pulse received last in the particular pulse sequence. It is thus possible to unequivocally associate the respectively related receiving pulse with any of the electric pulses 41 and 43 received in the signal propagation time measuring means 35 and 37, respectively, and measure the correct propagation time of the respective receiving pulse.
  • a pulse identification number determination for the electric transmission pulses 41 and 43 in the signal propagation time measuring means 35 and 37 can be carried out with circuits corresponding to Fig. 3.
  • the sequence of the different time intervals between the successive pulses of a pulse sequence is selected such that the time intervals between non- adjacent pulse pairs of the pulse sequence are different as well for each particular pulse pair, it is not only possible to ensure correct association of the respective receiving pulse with the related transmission pulse if all pulses of the respective pulse sequence arrive at signal receiver 29 and 33, respectively, but to ensure the same also if only part of the pulses of a pulse sequence arrives at the respective signal receiver 29 and 33, respectively.
  • One pulse each missing Three pulses each missing: Time interval between pulses Time interval between pulses l and 3 6.6 ms 1 and 5 12.7 ms
  • Time interval between pulses Time interval between pulses l and 7 18.3 ms 1 and 10 27 ms
  • the embodiment of a pulse identification number determining means shown in Fig. 3 does not only involve storing of all pulse intervals between the individual pulses of a complete pulse sequence in the electronic table of memory 51, but also of all intervals for a pulse sequence received with gaps in which only one pulse is missing, all intervals for a pulse sequence received with gaps in which two pulses are missing, all intervals for a pulse sequence received with gaps in which three pulses are missing, etc. This is carried out for all possible pulse gaps each along the pulse sequence.
  • this counting value is compared to all intervals stored in the electronic table of memory 51. If, e.g. a pulse interval of 3.3 ms corresponds to the counting value, this has to be the pulse No.8 of a pulse sequence without gaps. If the counting value corresponds e.g. to a pulse interval of 11.8 ms, the ninth pulse of a sequence with gaps has to be involved in which pulses No.6, 7 and 8 are missing. If a pulse interval of e.g. 26.7 ms corresponds to the counting value, the eleventh pulse of a pulse sequence with gaps has to be involved in which pulses 3 to 10 are missing.
  • interval lengths provide for the possibility of determining faulty behavior, in case of which the signal receiver 29 and/or 33 repeats old signal contents.
  • the individual interval lengths between the respective adjacent pulses are part of the signal contents, and the system has defined expectation of the dynamic change of the interval lengths in accordance with the specified pulse sequence. If the expectation is not in conformity with a measured interval length, faulty behavior of the system may be assumed.
  • the interval length to be expected between two successive pulses be it pulses of a pulse sequence without gaps or pulses of a pulse sequence with gaps, can be determined with the aid of the tables deposited in memory 51.
  • the measuring method according to the invention is less sensitive with respect to periodic noise signals than the conventional measuring methods.
  • the pulse sequence illustrated in Fig. 2 is designed for an elevator system having a travel path of the elevator car of 130 m.
  • the period duration of the pulse sequence of 33 ms is greater than the maximum sound propagation time in a wire used as sound conductor 13, which is 29 ms in case of a length of 130 m. It is thus ensured that the association of the receiving signals with the transmission signals is unequivocal since there can never be two pulses with the same pulse identification number on the sound conductor wire.
  • each pulse of the respective pulse sequence can be identified unequivocally by way of its distance in time from the preceding pulse and that only pulses of one and the same pulse sequence can be present on the sound conductor at a particular time, since the pulse sequence period duration is greater than the sound propagation time between the two sound conductor ends.
  • the pulse sequence of the example illustrated in Fig. 2 is optimized in so far as, in case there are two pulses missing between any consecutive receiving pulses of the pulse sequence, the interval distances at the gap locations will vary in the range from 8.5 ms to 9.5 ms for all possible gap positions of the pulse sequence.
  • Such a pulse interval is compatible with the operating cycle of software as it is usual for elevator systems with position detecting means making use of sound signal propagation time measuring means.
  • the pulse sequence according to the invention leads to the following advantages: [058] In comparison with a pulse sequence according to DE 1 903 645 Al, the pulse sequence according to the invention results in improved resistance against disturbances caused by interference of sound pulses with reflections of these sound pulses, which is achieved by the determination of different individual interval lengths between the consecutive pulses.
  • the position detecting method according to the invention provides for improved interference immunity as quantization errors and the like are averaged.
  • the position detecting method according to the invention involves lesser follow-up times of the individual measuring operations due to the denser succession of measuring operations in time.
  • the position detecting method according to the invention provides for faster synchronization between receiving pulses and transmission pulses since it is not necessary to wait for the synchronization pulses first. The method according to the invention makes the measuring values available faster than in case of the known method.
  • the position detecting method according to the invention is suited better for safety applications in connection with elevator systems than the known position detecting methods, due to the well defined predictability for each pulse interval independently of the respective measured position value of the elevator car.
  • the measuring method according to the invention is less sensitive with respect to periodic noise signals. As compared to EP 0 694 792 Al, the method according to the invention provides for redundancy due to higher measurement rates. Results of irregular disturbances may be rejected without impairment to the position measurement. [063] Although the invention has been shown and described with respect to the exemplary embodiments, it should be understood by the skilled in the art that the foregoing and other changes, omissions and additions may be made thereto without departing from the spirit and scope of the invention.

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  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Indicating And Signalling Devices For Elevators (AREA)

Abstract

L'invention concerne un dispositif servant à détection la position d'un objet (12) mobile sur une trajectoire de déplacement déterminée. Ce dispositif comprend les éléments suivants : un dispositif de transmission de signaux (13) s'étendant le long de la trajectoire ; un générateur (15) de signaux se déplaçant avec l'objet (12) mobile, au moyen duquel un signal est couplé au dispositif de transmission de signaux (13) ; au moins un récepteur (29, 33) de signaux en position d'extraction dans une partie terminale de la trajectoire ; un dispositif (35, 37) de mesure du temps de propagation des signaux conçu pour déterminer le temps de propagation d'un signal entre la position de couplage et la position d'extraction (45). Le générateur (15) de signaux est conçu pour fournir une séquence d'impulsions de signaux se répétant régulièrement (fig. 2), séquence dans laquelle les intervalles entre des impulsions de signaux consécutives sont différentes pour chaque couple d'impulsions de signaux consécutives. La durée de la séquence d'impulsions de signaux répétitive dépasse le temps de propagation de signal maximum avec des intervalles maximaux entre la position de couplage et la position d'extraction. Les intervalles de temps entre les impulsions de signaux consécutives sont inférieurs au temps de propagation de signal maximum.
PCT/US2002/032907 2001-11-15 2002-10-15 Sequence d'impulsions arythmique pour mesurer une distance sonore WO2003043920A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2003545567A JP4399264B2 (ja) 2001-11-15 2002-10-15 音響距離測定のための不規則なパルスシーケンス
US10/490,071 US7204347B2 (en) 2001-11-15 2002-10-15 Arrhythmic pulse sequence for sonic distance measurement
HK06103099.8A HK1083093A1 (en) 2001-11-15 2006-03-10 Position detecting device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10156043.5 2001-11-15
DE2001156043 DE10156043B4 (de) 2001-11-15 2001-11-15 Positionsermittlungsvorrichtung

Publications (1)

Publication Number Publication Date
WO2003043920A1 true WO2003043920A1 (fr) 2003-05-30

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PCT/US2002/032907 WO2003043920A1 (fr) 2001-11-15 2002-10-15 Sequence d'impulsions arythmique pour mesurer une distance sonore

Country Status (5)

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JP (1) JP4399264B2 (fr)
CN (1) CN100528725C (fr)
DE (1) DE10156043B4 (fr)
HK (1) HK1083093A1 (fr)
WO (1) WO2003043920A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1876134A2 (fr) * 2006-07-07 2008-01-09 Hitachi, Ltd. Ascenseur à plusieurs cabines
CN112061909A (zh) * 2020-09-23 2020-12-11 森思泰克河北科技有限公司 电梯控制系统

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103391893B (zh) * 2011-06-09 2016-01-20 三菱电机株式会社 电梯装置
EP3410147A4 (fr) * 2016-01-29 2019-01-02 Panasonic Intellectual Property Management Co., Ltd. Dispositif de mesure de distance
WO2019002660A1 (fr) * 2017-06-27 2019-01-03 Kone Corporation Procédés et appareils de configuration de dispositifs sans fil dans un système d'ascenseur

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0694792A1 (fr) * 1994-07-28 1996-01-31 K.A. SCHMERSAL GmbH & Co. Appareil de détermination de position
US5883345A (en) * 1997-12-23 1999-03-16 Otis Elevator Company Sonic position measurement system
EP1024372A1 (fr) * 1999-01-29 2000-08-02 K.A. SCHMERSAL GmbH & Co. Dispositif pour détecter la position
EP1030190A1 (fr) * 1999-01-29 2000-08-23 K.A. SCHMERSAL GmbH & Co. Dispositif pour détecter la position
EP1030189A1 (fr) * 1999-01-29 2000-08-23 K.A. SCHMERSAL GmbH & Co. Dispositif pour détecter la position

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0694792A1 (fr) * 1994-07-28 1996-01-31 K.A. SCHMERSAL GmbH & Co. Appareil de détermination de position
US5883345A (en) * 1997-12-23 1999-03-16 Otis Elevator Company Sonic position measurement system
EP1024372A1 (fr) * 1999-01-29 2000-08-02 K.A. SCHMERSAL GmbH & Co. Dispositif pour détecter la position
EP1030190A1 (fr) * 1999-01-29 2000-08-23 K.A. SCHMERSAL GmbH & Co. Dispositif pour détecter la position
EP1030189A1 (fr) * 1999-01-29 2000-08-23 K.A. SCHMERSAL GmbH & Co. Dispositif pour détecter la position

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1876134A2 (fr) * 2006-07-07 2008-01-09 Hitachi, Ltd. Ascenseur à plusieurs cabines
EP1876134A3 (fr) * 2006-07-07 2012-06-13 Hitachi, Ltd. Ascenseur à plusieurs cabines
CN112061909A (zh) * 2020-09-23 2020-12-11 森思泰克河北科技有限公司 电梯控制系统

Also Published As

Publication number Publication date
CN100528725C (zh) 2009-08-19
DE10156043A1 (de) 2003-06-05
DE10156043B4 (de) 2006-03-02
JP4399264B2 (ja) 2010-01-13
HK1083093A1 (en) 2006-06-23
JP2005509867A (ja) 2005-04-14
CN1692068A (zh) 2005-11-02

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