WO2022195823A1 - エレベーターの監視装置 - Google Patents
エレベーターの監視装置 Download PDFInfo
- Publication number
- WO2022195823A1 WO2022195823A1 PCT/JP2021/011206 JP2021011206W WO2022195823A1 WO 2022195823 A1 WO2022195823 A1 WO 2022195823A1 JP 2021011206 W JP2021011206 W JP 2021011206W WO 2022195823 A1 WO2022195823 A1 WO 2022195823A1
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- WO
- WIPO (PCT)
- Prior art keywords
- car
- monitoring device
- sound
- value
- vibration
- Prior art date
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 100
- 238000013480 data collection Methods 0.000 claims abstract description 17
- 230000001133 acceleration Effects 0.000 claims description 37
- 230000007423 decrease Effects 0.000 claims description 3
- 238000012545 processing Methods 0.000 description 14
- 230000006870 function Effects 0.000 description 13
- 238000010586 diagram Methods 0.000 description 8
- 208000019901 Anxiety disease Diseases 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 2
- 230000036506 anxiety Effects 0.000 description 2
- 238000003745 diagnosis Methods 0.000 description 2
- 230000003203 everyday effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
-
- 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
-
- 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
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
Definitions
- the present disclosure relates to an elevator monitoring device.
- Patent Document 1 discloses an elevator system.
- the elevator system continues to operate by changing the normal operating parameters of the car when an abnormality occurs.
- the present disclosure was made to solve the above problems. SUMMARY OF THE INVENTION It is an object of the present disclosure to provide an elevator monitoring device capable of appropriately setting normal operating parameters of a car when no user is inside the car.
- the elevator monitoring device implements a data collection unit that acquires the value of the magnitude of sound or vibration of the elevator car, and a diagnostic operation that causes the car to operate without a user on the car, When the value of the magnitude of sound or vibration collected by the data collection unit during diagnostic operation exceeds a threshold value, the operating speed of the car is gradually reduced, and the data collection unit detects the magnitude of the sound or vibration. and an instruction unit for setting the operating speed when the value of the height becomes less than the threshold value as the normal operating speed of the car.
- the elevator monitoring device implements a data collection unit that acquires the value of the magnitude of sound or vibration of the elevator car, and a diagnostic operation that causes the car to operate without a user on the car,
- a data collection unit acquires the value of the magnitude of sound or vibration of the elevator car
- a diagnostic operation causes the car to operate without a user on the car
- the acceleration and the deceleration of the car from a constant operating speed to a stop are defined as the acceleration from the stop to a constant operating speed and the constant operating speed of the car in the case of normal operation of the car. and an instruction unit for setting the deceleration from to stop.
- the elevator monitoring device performs diagnostic operation in which the car is operated without a user on board.
- the monitoring device gradually slows down or decreases the operating speed or acceleration and deceleration of the car to detect the magnitude of the sound or vibration.
- the operating speed or acceleration and deceleration of the car is set as the normal operating speed or acceleration and deceleration of the car. Therefore, the normal operating parameters of the car can be appropriately set when the user is not inside the car.
- FIG. 1 is a configuration diagram of an elevator system to which an elevator monitoring device according to Embodiment 1 is applied;
- FIG. 1 is a block diagram of an elevator system to which an elevator monitoring device according to Embodiment 1 is applied;
- FIG. 4 is a flow chart for explaining an overview of the operation of the elevator monitoring device according to Embodiment 1.
- FIG. 1 is a hardware configuration diagram of an elevator monitoring device according to Embodiment 1.
- FIG. 1 is a configuration diagram of an elevator system to which an elevator monitoring device according to Embodiment 1 is applied
- FIG. 1 is a block diagram of an elevator system to which an elevator monitoring device according to Embodiment 1 is applied
- FIG. 4 is a flow chart for explaining an overview of the operation
- FIG. 1 is a configuration diagram of an elevator system to which an elevator monitoring device according to Embodiment 1 is applied.
- the hoistway 1 runs through each floor of the building (not shown).
- the hoist 2 is provided above the hoistway 1 .
- the main rope 3 is wound around the hoisting machine 2 .
- a pair of car-side guide rails 4 are provided inside the hoistway 1.
- the longitudinal direction of each of the pair of car-side guide rails 4 is the vertical direction.
- the car 5 is provided inside the hoistway 1 .
- the car 5 is supported on one side of the main rope 3 from below.
- the car 5 is guided vertically by a pair of car-side guide rails 4 .
- a pair of weight-side guide rails 6 are provided inside the hoistway 1 .
- the longitudinal direction of each of the pair of weight-side guide rails 6 is the vertical direction.
- a counterweight 7 is provided inside the hoistway 1 .
- the upper part of the counterweight 7 is supported on the other side of the main rope 3 .
- a counterweight 7 is guided vertically by a pair of weight-side guide rails 6 .
- the governor 8 is provided above the hoistway 1.
- a tension pulley 9 is provided in the lower part of the hoistway 1 .
- the governor rope 10 is provided endlessly.
- a governor rope 10 is wound around a governor 8 and a tension wheel 9. - ⁇
- the control device 11 is provided above the hoistway 1.
- the control device 11 is electrically connected to the hoisting machine 2 and the equipment of the car 5 .
- a controller 11 is provided to control the elevator as a whole.
- the control device 11 rotates the hoist 2.
- the main rope 3 moves following the rotation of the hoist 2 .
- the car 5 and the counterweight 7 follow the movement of the main rope 3 and move up and down in opposite directions.
- the governor rope 10 moves following the elevation of the car 5 .
- the governor 8 rotates following the movement of the governor rope 10 .
- the control device 11 recognizes the vertical position of the car 5 based on the rotational speed of the governor 8 .
- the measuring instrument 12 is provided on the top of the car 5.
- the measuring instrument 12 measures surrounding conditions.
- a measuring instrument 12 is provided so as to be able to measure the state inside the hoistway 1 .
- a measuring instrument 12 is provided so as to measure the state of the car 5 .
- measuring instrument 12 is an acceleration sensor.
- meter 12 is a microphone.
- the diagnostic device 13 is provided on the top of the car 5. Diagnostic device 13 is electrically connected to meter 12 .
- the monitoring device 14 is provided near the control device 11 .
- the monitoring device 14 is electrically connected to the control device 11 and the diagnostic device 13 respectively.
- a monitoring device 14 is provided to monitor the state of the elevator based on information from the control device 11 .
- the information center device 15 is installed in a place away from the building where the elevator is installed.
- the information center device 15 is provided in an elevator maintenance company.
- the information center device 15 is provided so as to grasp the state of the elevator based on the information from the monitoring device 14 .
- FIG. 2 is a block diagram of an elevator system to which the elevator monitoring device according to Embodiment 1 is applied.
- the monitoring device 14 includes an instruction unit 14a, a data collection unit 14b, and a comparison unit 14c.
- the monitoring device 14 preliminarily stores a schedule for performing the diagnostic operation. For example, diagnostic operation is performed periodically during a time period when the frequency of use is low. For example, a diagnostic run is performed once every day early in the morning. For example, the diagnostic operation is a remote test operation instructed by the information center device 15 .
- the control device 11 performs diagnostic operation according to instructions from the instruction unit 14a.
- the control device 11 drives the car 5 (not shown) without any user on board.
- the control device 11 responds to the elevator call from the user without rejecting it.
- the control device 11 notifies the user that the diagnostic operation is in progress.
- the control device 11 displays to the user that diagnostic operation is being performed via a display device (not shown).
- the diagnostic operation is temporarily suspended. The diagnostic run is then resumed when the starting conditions are met again.
- the measuring instrument 12 measures the surrounding conditions while the car 5 is running. Specifically, the microphone collects ambient sounds. The acceleration sensor measures vibration of the car 5 . Information on the magnitude of the sound or vibration measured by the measuring instrument 12 is transmitted to the diagnostic device 13 .
- the diagnostic device 13 transmits information on the magnitude of the sound or vibration to the data collection unit 14b.
- the data collection unit 14b transmits the acquired information on the magnitude of the sound or vibration to the comparison unit 14c.
- the comparison unit 14c determines whether or not the value of the magnitude of the sound or vibration is equal to or greater than the threshold. The comparison unit 14c transmits the determined result to the instruction unit 14a.
- the instruction unit 14a causes the control device 11 to change the operating speed of the car 5 based on the result determined by the comparison unit 14c.
- the monitoring device 14 transmits information on the result of diagnostic operation to the information center device 15 .
- FIG. 3 is a flow chart for explaining the outline of the operation of the elevator monitoring device according to the first embodiment.
- step S1 the monitoring device 14 causes the control device 11 to start diagnostic operation.
- the monitoring device 14 causes the control device 11 to operate the car 5 at the rated speed.
- the rated speed is 105m/min.
- the monitoring device 14 operates in step S2.
- step S2 the monitoring device 14 determines whether the value of the measured sound or vibration magnitude is equal to or greater than a threshold. If the value of the magnitude of the sound or vibration is not equal to or greater than the threshold in step S2, the monitoring device 14 causes the control device 11 to start normal operation. If the value of the magnitude of the sound or vibration is equal to or greater than the threshold in step S2, the monitoring device 14 performs the operation of step S3.
- step S3 the monitoring device 14 causes the control device 11 to reduce the operating speed of the car 5 to the first speed and then continue the diagnostic operation.
- the first speed is 90m/min.
- step S4 the monitoring device 14 determines whether or not the value of the measured sound or vibration magnitude is equal to or greater than a threshold.
- step S4 If it is determined in step S4 that the magnitude of the sound or vibration is not equal to or greater than the threshold, the monitoring device 14 performs the operation of step S5. In step S5, the monitoring device 14 causes the control device 11 to set the normal operating speed of the car 5 to the first speed. After that, the monitoring device 14 causes the control device 11 to start normal operation.
- step S4 the monitoring device 14 performs the operation of step S6.
- step S6 the monitoring device 14 causes the control device 11 to reduce the operating speed of the car 5 to the second speed and then continue the diagnostic operation. For example, the second speed is 75 m/min.
- step S7 the monitoring device 14 determines whether or not the value of the measured sound or vibration magnitude is equal to or greater than a threshold.
- step S7 If the value of the magnitude of the sound or vibration is not equal to or greater than the threshold in step S7, the monitoring device 14 performs the operation of step S8.
- step S8 the monitoring device 14 causes the control device 11 to set the normal operating speed of the car 5 to the second speed. After that, the monitoring device 14 causes the control device 11 to start normal operation.
- step S7 When the value of the magnitude of the sound or vibration is equal to or greater than the threshold in step S7, the monitoring device 14 performs the operation of step S9. In step S9, the monitoring device 14 notifies the information center device 15 of the diagnosis result.
- the monitoring device 14 causes the control device 11 to set the normal operating speed of the car 5 to the operating speed at which the magnitude of the measured sound or vibration is the lowest value. After that, the monitoring device 14 causes the control device 11 to start normal operation.
- the monitoring device 14 performs diagnostic operation in which the car 5 is operated without any user on the car 5 .
- the monitoring device 14 gradually reduces the operating speed of the car 5 so that the sound or vibration magnitude value is less than the threshold value.
- the operating speed in the case of is set as the normal operating speed of the car. Therefore, the normal operating parameters of the car can be appropriately set when the user is not inside the car. As a result, it is possible to reduce the user's anxiety caused by abnormal noise or vibration of the car due to wear of the guide shoes or running out of oil on the car-side guide rails 4 .
- the monitoring device 14 detects the magnitude of the sound or vibration of the car 5. is set as the normal operating speed of the car 5. Therefore, the operation can be continued without stopping the elevator.
- the monitoring device 14 may stop the operation of the elevator when the magnitude of the sound or vibration of the car 5 exceeds the threshold even if the operating speed of the car 5 is reduced during the diagnostic operation. . In this case, by notifying the information center device 15 that the elevator is stopped, the elevator can be inspected early.
- the measuring instrument 12 and the diagnostic device 13 may be retrofitted to the elevator.
- the diagnostic operation function can be added when the elevator is renewed.
- the measuring device 12 may directly transmit the measured information to the monitoring device 14 instead of the diagnostic device 13 .
- the measuring device 12 may transmit the measured information to the control device 11 instead of the diagnostic device 13 .
- the threshold value to be compared with the value of the magnitude of sound or vibration may be dynamically set by the information center device 15 .
- the value to be compared with the threshold may be only the loudness value.
- the value to be compared with the threshold value may be only the value of the magnitude of vibration.
- FIG. 4 is a hardware configuration diagram of the elevator monitoring device according to the first embodiment.
- Each function of the monitoring device 14 can be realized by a processing circuit.
- the processing circuitry comprises at least one processor 100a and at least one memory 100b.
- the processing circuitry comprises at least one piece of dedicated hardware 200 .
- each function of the monitoring device 14 is realized by software, firmware, or a combination of software and firmware. At least one of software and firmware is written as a program. At least one of software and firmware is stored in at least one memory 100b. At least one processor 100a implements each function of the monitoring device 14 by reading and executing a program stored in at least one memory 100b.
- the at least one processor 100a is also referred to as a central processing unit, processing unit, arithmetic unit, microprocessor, microcomputer, DSP.
- the at least one memory 100b is a nonvolatile or volatile semiconductor memory such as RAM, ROM, flash memory, EPROM, EEPROM, magnetic disk, flexible disk, optical disk, compact disk, mini disk, DVD, or the like.
- the processing circuitry comprises at least one piece of dedicated hardware 200
- the processing circuitry may be implemented, for example, in single circuits, multiple circuits, programmed processors, parallel programmed processors, ASICs, FPGAs, or combinations thereof.
- each function of the monitoring device 14 is implemented by a processing circuit.
- each function of the monitoring device 14 is collectively realized by a processing circuit.
- a part of each function of the monitoring device 14 may be realized by dedicated hardware 200, and the other part may be realized by software or firmware.
- the function of the instruction unit 14a is realized by a processing circuit as dedicated hardware 200, and the functions other than the function of the instruction unit 14a are read by at least one processor 100a reading a program stored in at least one memory 100b. It may be realized by executing
- the processing circuitry implements each function of the monitoring device 14 with hardware 200, software, firmware, or a combination thereof.
- each function of the control device 11 and the diagnostic device 13 is also implemented by a processing circuit equivalent to the processing circuit that implements each function of the monitoring device 14.
- FIG. 5 is a diagram for explaining changes in acceleration and deceleration of the car of the elevator system to which the elevator monitoring device according to the second embodiment is applied.
- the same reference numerals are given to the same or corresponding parts as those of the first embodiment. Description of this part is omitted.
- the instruction unit 14a causes the control device 11 to change the normal acceleration or deceleration of the car 5 based on the determination result of the comparison unit 14c.
- the solid line indicates the case where the car 5 before being changed by the diagnostic operation is accelerated from stopping to a constant operating speed and decelerated from the constant operating speed until the car 5 stops. shows the change in velocity.
- the dashed line shows the running speed of car 5 when the acceleration and deceleration after being modified by the diagnostic run are applied.
- FIG. 6 is a flow chart for explaining the outline of the operation of the elevator monitoring device according to the second embodiment.
- step S11 the monitoring device 14 causes the control device 11 to start diagnostic operation.
- the monitoring device 14 instructs the control device 11 to set the acceleration and deceleration of the car 5 from the constant running speed to the stop to the rated acceleration and deceleration.
- Car 5 is operated so that Subsequently, the monitoring device 14 operates in step S2.
- step S12 the monitoring device 14 determines whether or not the value of the measured sound or vibration magnitude is equal to or greater than a threshold. If the value of the magnitude of the sound or vibration is not equal to or greater than the threshold in step S12, the monitoring device 14 causes the control device 11 to start normal operation. When the value of the magnitude of the sound or vibration is equal to or greater than the threshold in step S12, the monitoring device 14 performs the operation of step S13.
- step S13 the monitoring device 14 instructs the control device 11 to calculate the acceleration from the stop of the car 5 to a constant operating speed and the deceleration from the constant operating speed to the stop of the car 5 as a first acceleration. and deceleration, and continue diagnostic operation. Note that the first acceleration and deceleration are smaller than the rated acceleration and deceleration. Subsequently, the monitoring device 14 operates in step S14. In step S14, the monitoring device 14 determines whether or not the value of the measured sound or vibration magnitude is equal to or greater than a threshold.
- step S15 the monitoring device 14 instructs the control device 11 to indicate the acceleration of the car 5 from stopping to a constant running speed and the deceleration from the constant running speed to the stop of the car 5 during normal operation. Let the velocity be set to the first acceleration and deceleration. After that, the monitoring device 14 causes the control device 11 to start normal operation.
- step S16 the monitoring device 14 causes the control device 11 to calculate the acceleration from the stop of the car 5 to a constant running speed and the deceleration from the constant running speed to the stop of the car 5 as a second acceleration. and deceleration, and continue diagnostic operation. Note that the second acceleration and deceleration are smaller than the first acceleration and deceleration.
- the measuring instrument 12 performs the operation of step S17.
- step S17 the monitoring device 14 determines whether or not the value of the measured sound or vibration magnitude is equal to or greater than a threshold.
- step S17 If it is determined in step S17 that the magnitude of the sound or vibration is not equal to or greater than the threshold, the monitoring device 14 performs the operation of step S18.
- step S18 the monitoring device 14 instructs the control device 11 to indicate the acceleration from the stop of the car 5 to a constant running speed and the deceleration from the constant running speed to the stop of the car 5 in the case of normal operation. Decrease the velocity to a second acceleration and deceleration. After that, the monitoring device 14 causes the control device 11 to start normal operation.
- step S17 If the value of the magnitude of the sound or vibration is equal to or greater than the threshold in step S17, the monitoring device 14 performs the operation of step S19.
- step S19 the monitoring device 14 notifies the information center device 15 of the diagnosis result.
- the monitoring device 14 provides the control device 11 with the acceleration from the stop of the car 5 to a constant running speed and the deceleration from the constant running speed to the stop of the car 5 in the case of normal operation of the car 5. is set to the acceleration and deceleration at which the measured sound or vibration magnitude value is lowest. After that, the monitoring device 14 causes the control device 11 to start normal operation.
- the monitoring device 14 performs diagnostic operation in which the car 5 is operated without a user on the car 5 .
- the monitoring device 14 detects the acceleration from when the car 5 stops to a constant driving speed and the constant driving speed of the car 5.
- the deceleration is reduced step by step until the car stops, and the operating speed when the value of the magnitude of the sound or vibration becomes less than the threshold value is set as the normal acceleration and deceleration of the car. Therefore, the normal acceleration and deceleration of the car can be set without the user inside the car.
- the elevator monitoring device of the present disclosure can be used in an elevator system.
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- Indicating And Signalling Devices For Elevators (AREA)
Abstract
Description
図1は実施の形態1におけるエレベーターの監視装置が適用されるエレベーターシステムの構成図である。
図2は実施の形態1におけるエレベーターの監視装置が適用されるエレベーターシステムのブロック図である。
図3は実施の形態1におけるエレベーターの監視装置の動作の概要を説明するためのフローチャートである。
図4は実施の形態1におけるエレベーターの監視装置のハードウェア構成図である。
図5は、実施の形態2におけるエレベーターの監視装置が適用されるエレベーターシステムのかごの加速度および減速度の変化を説明するための図である。なお、実施の形態1の部分と同一又は相当部分には同一符号が付される。当該部分の説明は省略される。
図6は実施の形態2におけるエレベーターの監視装置の動作の概要を説明するためのフローチャートである。
Claims (4)
- エレベーターのかごの音または振動の大きさの値を取得するデータ収集部と、
前記かごに利用者を乗せずに前記かごを運転させる診断運転を実施させ、診断運転中において前記データ収集部が収集した音または振動の大きさの値が閾値以上となった場合に、前記かごの運転速度を段階的に減速させ、前記データ収集部が音または振動の大きさの値が閾値未満となった場合における運転速度を前記かごの通常の運転速度として設定させる指示部と、
を備えたエレベーターの監視装置。 - 前記指示部は、診断運転中に前記かごの運転速度を減速させても前記かごの音または振動の大きさの値が閾値を超えている場合は、前記かごの音または振動の大きさの値が最低値となった運転速度を前記かごの通常の運転速度として設定させる請求項1に記載のエレベーターの監視装置。
- エレベーターのかごの音または振動の大きさの値を取得するデータ収集部と、
前記かごに利用者を乗せずに前記かごを運転させる診断運転を実施させ、診断運転中において前記データ収集部が収集した音または振動の大きさの値が閾値以上となった場合に、前記かごが停車時から運転速度に至るまでの加速度および前記かごが一定の運転速度から停車するまでの減速度を段階的に減少させ、前記データ収集部が音または振動の大きさの値が閾値未満となった場合における前記かごが停車時から一定の運転速度に至るまでの加速度および前記かごが一定の運転速度から停車するまでの減速度を、前記かごの通常運転の場合の、前記かごが停車時から一定の運転速度に至るまでの加速度および前記かごが一定の運転速度から停車するまでの減速度として設定させる指示部と、
を備えたエレベーターの監視装置。 - 前記指示部は、診断運転中に前記かごが停車時から一定の運転速度に至るまでの加速度および前記かごが一定の運転速度から停車するまでの減速度を段階的に減少させても前記かごの音または振動の大きさの値が閾値を超えている場合は、前記かごの音または振動の大きさの値が最低値となった前記かごが停車時から一定の運転速度に至るまでの加速度および前記かごが一定の運転速度から停車するまでの減速度を、前記かごの通常運転の場合の、前記かごが停車時から一定の運転速度に至るまでの加速度および前記かごが一定の運転速度から停車するまでの減速度として設定させる請求項3に記載のエレベーターの監視装置。
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CN202180095708.8A CN117083235A (zh) | 2021-03-18 | 2021-03-18 | 电梯的监视装置 |
PCT/JP2021/011206 WO2022195823A1 (ja) | 2021-03-18 | 2021-03-18 | エレベーターの監視装置 |
JP2023506644A JP7315119B2 (ja) | 2021-03-18 | 2021-03-18 | エレベーターの監視装置 |
KR1020237034667A KR102628184B1 (ko) | 2021-03-18 | 2021-03-18 | 엘리베이터의 감시 장치 |
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JP6202050B2 (ja) * | 2015-06-25 | 2017-09-27 | 三菱電機ビルテクノサービス株式会社 | エレベータシステム |
US11040852B2 (en) * | 2018-05-01 | 2021-06-22 | Otis Elevator Company | Elevator car control to address abnormal passenger behavior |
WO2019244245A1 (ja) * | 2018-06-19 | 2019-12-26 | 三菱電機ビルテクノサービス株式会社 | 温度推移特定装置、保守計画システム及びエレベーターシステム |
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2021
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- 2021-03-18 JP JP2023506644A patent/JP7315119B2/ja active Active
- 2021-03-18 WO PCT/JP2021/011206 patent/WO2022195823A1/ja active Application Filing
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JPH092752A (ja) * | 1995-06-20 | 1997-01-07 | Hitachi Building Syst Eng & Service Co Ltd | エレベータの診断装置 |
JP2008230743A (ja) * | 2007-03-19 | 2008-10-02 | Toshiba Elevator Co Ltd | エレベータの保守管理システム |
JP2011037525A (ja) * | 2009-08-06 | 2011-02-24 | Mitsubishi Electric Building Techno Service Co Ltd | エレベータの異常音検出装置 |
WO2018122999A1 (ja) * | 2016-12-28 | 2018-07-05 | 三菱電機ビルテクノサービス株式会社 | エレベーターの遠隔運行再開システム |
CN108275525A (zh) * | 2018-01-17 | 2018-07-13 | 中北大学 | 基于动力学分析的高速电梯运行参数监测方法 |
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