WO2019106949A1 - Ascenseur et dispositif de commande d'ascenseur - Google Patents

Ascenseur et dispositif de commande d'ascenseur Download PDF

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Publication number
WO2019106949A1
WO2019106949A1 PCT/JP2018/037015 JP2018037015W WO2019106949A1 WO 2019106949 A1 WO2019106949 A1 WO 2019106949A1 JP 2018037015 W JP2018037015 W JP 2018037015W WO 2019106949 A1 WO2019106949 A1 WO 2019106949A1
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WO
WIPO (PCT)
Prior art keywords
determination value
power
car
unit
elevator
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Application number
PCT/JP2018/037015
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English (en)
Japanese (ja)
Inventor
幸一 山下
孝道 星野
勇来 齊藤
Original Assignee
株式会社日立製作所
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.)
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Publication date
Application filed by 株式会社日立製作所 filed Critical 株式会社日立製作所
Priority to CN201880067144.5A priority Critical patent/CN111212801B/zh
Priority to JP2019557037A priority patent/JP6850362B2/ja
Publication of WO2019106949A1 publication Critical patent/WO2019106949A1/fr

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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

Definitions

  • the present invention relates to an elevator and an elevator control device.
  • Patent Document 1 discloses a contactless power supply system for an elevator that supplies power without contact to a battery installed in a car.
  • the remaining power of the battery installed in the car decreases with the operation of the car.
  • the power capacity of the battery installed in the car is not large, and the battery is frequently supplied with power. If you can move the car to the feeding floor immediately, you can charge the battery, but stop the car at the feeding floor because the usage frequency of the car is high during busy hours (for example, when working, lunching, working) It is difficult to keep doing.
  • Patent Document 1 discloses a control system that group-controls a plurality of units.
  • the car moves frequently, for example, in a time zone in which the number of users who get on the car is large. If the remaining power of the battery is reduced too much, for example, the lighting unit may be turned off. In order to avoid such a situation, it is necessary to move the car to the power supply floor to charge the battery regardless of the presence or absence of the user, and it has not been possible to provide sufficient service to the user.
  • the present invention has been made in view of such a situation, and an object thereof is to balance power feeding to a battery mounted in a car with a service that can be provided to a user.
  • An elevator comprises an elevator control device for controlling the operation of a car and a car moving on a hoistway.
  • the car receives an electric power supplied from a power storage unit for storing power supplied to devices used in the car and a power supply unit installed at a power supply floor of the hoistway, and a power receiving unit for charging the power storage unit And.
  • the elevator control device compares the remaining amount of power stored in the storage unit with a preset determination value, and the power of the power supplied to the device when the remaining amount of power is equal to or less than the determination value And a power supply that reduces the amount.
  • the amount of power supplied to the device can be reduced according to the remaining amount of power, the number of times of power feeding can be reduced, for example, a time zone in which the number of users who get on a car is large. It will also be possible to continue providing services to users. Problems, configurations, and effects other than those described above will be apparent from the description of the embodiments below.
  • FIG. 7A is an explanatory view showing that the average battery remaining amount is 50% or less which is the present determination value.
  • FIG. 7B is an explanatory view showing that the average battery remaining amount exceeds 50% which is the current determination value.
  • FIG. 7B is an explanatory view showing that the average battery remaining amount exceeds 50% which is the current determination value.
  • FIG. 1 is an explanatory view showing a schematic configuration example of an elevator.
  • the elevator 1 includes an elevator control device 3, a hoistway 5 formed in a building, a hoisting machine 4, a car 10 on which a user rides, a counterweight 11, and the hoisting machine 4.
  • a main rope 12 is provided for suspending the weight 11.
  • the hoistway 5 is formed in a building, and a machine room 2 is provided at the top thereof.
  • the hoisting machine 4 is disposed in the machine room 2 and is normally or reversely rotated by a motor (not shown), and raises and lowers the car 10 in the hoistway 5 by winding the main rope 12.
  • the car 10 is guided by a guide rail 7 extending in the z direction to ascend and descend in the z direction. Although one guide rail 7 is shown in FIG. 1, two or more guide rails 7 may be provided.
  • the hoisting machine 4 is provided with an encoder 4a that is directly connected to a motor (not shown) and generates pulses proportional to the speed of the motor.
  • the elevator control device 3 is installed in the machine room 2.
  • the elevator control device 3 analyzes the information (pulse signal) sent from the encoder 4 a of the elevator 1 and controls the operation of the car 10. Further, the elevator control device 3 increases or decreases the power supplied to the devices used in the car 10.
  • the devices used in the car 10 include, for example, a lighting unit 24, an air conditioning unit 25, a display unit 26, and a car door 27.
  • the hoistway 5 is for multiple floors, and the car 10 is stopped at a landing level (hallhole) that indicates the stop position of each floor according to the destination floor.
  • the support 6 is a wall of a hoistway 5 supporting the car 10, a pillar, a guide rail or the like.
  • the coil unit 8 is used as an example of a power feeding unit responsible for non-contact power feeding, and is fixed to the support 6 directly or indirectly via another object.
  • the coil unit 8 is installed inside a hoistway 5 in which the first floor or the top floor (observation floor) with many users is the feeding floor.
  • FIG. 1 shows an example in which the coil unit 8 is installed on the first floor.
  • a power reception unit 21 and a battery 22 are installed under the floor of the car 10.
  • the power receiving unit 21 receives the power supplied from the coil unit 8 and charges the battery 22.
  • the power receiving unit 21 includes a coil unit 21a and a charging circuit 21b.
  • the coil unit 21 a receives the power transmitted from the coil unit 8.
  • the charging circuit 21b charges the battery 22 with the power received by the coil unit 21a.
  • the battery 22 is used as an example of a power storage unit that stores power supplied to devices used in the car 10.
  • a capacitor, a lead storage battery, a lithium ion battery or the like is used as the battery 22.
  • a lighting unit 24 and an air conditioning unit 25 are installed on the ceiling of the car 10.
  • the illumination unit 24 is, for example, ceiling illumination such as a light emitting diode (LED) that illuminates the inside of the car 10.
  • the air conditioning unit 25 is a fan or the like that adjusts the temperature in the car 10.
  • a display 26 and a car door 27 are installed on the side surface of the car 10.
  • the display unit 26 is a liquid crystal screen or the like that displays the destination floor of the car 10, the open / close state of the car door 27, and the like.
  • the car door 27 opens and closes with a landing door (not shown) on the floor where the car 10 has stopped.
  • the coil unit 21a can perform data communication with the elevator control device 3 by wireless communication. Further, the elevator control device 3 can perform data communication with the coil unit 8 by wired communication or wireless communication.
  • the elevator control device 3 is connected to an elevator monitoring device (not shown) that monitors the state of the elevator 1 via a communication line.
  • the position P0 represents the position in the z direction of the central axis of the coil in the coil unit 21a mounted on the car 10.
  • the position P1 represents the position in the z direction of the central axis of the coil in the coil unit 8 installed at the landing of the first floor.
  • FIG. 2 is a functional block diagram showing a configuration example of the elevator control device 3.
  • solid arrows represent the flow of data
  • dashed dotted arrows are supplied to devices (including the illumination unit 24, the air conditioning unit 25, the display unit 26, and the car door 27) used in the car 10. Represents power.
  • the elevator control device 3 includes a comparison unit 31, a power supply unit 32, a determination value storage unit 33, a determination value change unit 34, and an operation control unit 35.
  • Comparison unit 31 compares the remaining amount of power stored in battery 22 (hereinafter referred to as “remaining battery amount”), and the first determination value and the second determination value set in advance in determination value storage unit 33. The comparison is performed, and the comparison result is output to the power supply unit 32.
  • the second determination value is a value lower than the first determination value.
  • the power supply unit 32 reduces the amount of power supplied by the battery 22 to the device used by the car 10 based on the comparison result input from the comparison unit 31, thereby reducing the power consumption by the device used by the car 10. Supply power.
  • the amount of power supplied to the devices used in the car 10 is reduced when the battery remaining amount is less than or equal to the first determination value or less than or equal to the first determination value and the second determination value.
  • the determination value storage unit 33 stores a first determination value and a second determination value as the determination values referred to by the comparison unit 31.
  • the first determination value and the second determination value are appropriately read from the determination value storage unit 33 by the power supply unit 32, and are used for comparison with the battery remaining amount.
  • the determination value changing unit 34 sets the first determination set in the determination value storage unit 33 according to the operation status of the car 10 supplied from the operation control unit 35 or the time zone in which the operation time of the car 10 is included. Change to increase or decrease the value and the second judgment value. In addition, when the average value of the remaining power during a predetermined period in the past (for example, one hour from the current time) is equal to or less than the current first determination value, the determination value changing unit 34 determines the first determination value and the 2 Make a change to increase the judgment value. In addition, when the average value of the remaining power during a predetermined period in the past (for example, one hour from the current time) exceeds the current first determination value, the determination value changing unit 34 determines the first determination value and the second determination value. Make a change that reduces the judgment value.
  • the operation control unit 35 controls the operation of the devices used in the car 10 and acquires the operation status of each device. Then, the operation control unit 35 controls the operation of the car 10 and notifies the comparison unit 31 of the operation status of the car 10. In addition, the operation control unit 35 receives the charging status of the battery 22 from the coil unit 21a. The operation control unit 35 also controls the operation of the hoisting machine 4 to cause the hoisting machine 4 to wind up the main rope and move the car 10 in the hoistway 5. Then, the operation control unit 35 analyzes the information sent from the encoder 4 a and confirms the current position of the car 10.
  • the operation control unit 35 extends the open time of the car door 27 more than the open time of the car door 27 when stopping on a floor other than the power feeding floor.
  • the time when the car 10 stops at the feeding floor becomes longer, and the time when the power receiving unit 21 receives the power transmitted from the coil unit 8 also becomes longer.
  • the time for which the power receiving unit 21 charges the battery 22 becomes long, and it becomes possible to charge the battery 22 with sufficient power.
  • FIG. 3 is a block diagram showing an example of the hardware configuration of the computer C that constitutes the elevator control device 3.
  • the computer C is hardware that is used as a so-called computer.
  • the computer C includes a central processing unit (CPU) C1 connected to the bus C4, a read only memory (ROM) C2, and a random access memory (RAM) C3.
  • the computer C includes a non-volatile storage C5 and a network interface C6.
  • the CPU C1 reads out from the ROM C2 a program code of software that implements each function according to the present embodiment and executes it.
  • the RAM C3 variables, parameters, and the like generated during the arithmetic processing are temporarily written.
  • non-volatile storage C5 for example, a hard disk drive (HDD), a solid state drive (SSD), a flexible disk, an optical disk, an optical magnetic disk, a CD-ROM, a CD-R, a magnetic tape, a non-volatile memory, etc. are used.
  • OS Operating System
  • a program for causing the elevator control device 3 to function is recorded in the non-volatile storage C5.
  • the ROM C2 and the non-volatile storage C5 store programs, data, etc. necessary for the CPU C1 to operate, and are computer readable non-transitory records storing programs executed by the elevator control device 3 It is used as an example of a medium.
  • a NIC Network Interface Card
  • LAN Local Area Network
  • FIG. 4 is an explanatory view showing an example of the storage capacity of the battery 22 and the current remaining amount of the battery. For example, assuming that the storage capacity of the battery 22 is 100%, the power receiving unit 21 shown in FIG. 1 can charge the battery 22 up to 100%.
  • the remaining battery amount is indicated by hatching.
  • the current remaining amount of battery is 80% of the storage capacity.
  • 50% of the storage capacity is taken as a first determination value, and 30% of the storage capacity is taken as a second determination value. If the remaining battery capacity is 80% of the storage capacity, the remaining battery capacity is sufficient, so that the power used by the equipment used in the car 10 is supplied from the power supply unit 32.
  • the power supply unit 32 reduces the amount of power supplied to the illumination unit 24 and the display unit 26. For this reason, the illumination unit 24 illuminates the interior of the car 10 at a lower luminance than that normally used.
  • the display unit 26 displays the guidance such as the destination floor at a lower luminance than that normally used.
  • the power supply unit 32 reduces the amount of power supplied to the air conditioning unit 25. At this time, the fan of the air conditioning unit 25 is stopped. Thus, even if the amount of power supplied to the air conditioning unit 25 is reduced, the comfort for the user in the car 10 is not significantly reduced.
  • the first determination value and the second determination value are changed by the determination value changing unit 34 according to the time zone in which the car 10 is operated, the operation status in the building in which the car 10 is installed, and the like. .
  • the first determination value and the second determination value are initial values (the first determination value is 50%, and the second determination value is 30%). ) Is maintained.
  • the determination value changing unit 34 changes the first determination value and the second determination value to values lower than the initial value. Therefore, the battery remaining amount is less likely to be lower than the first determination value and the second determination value, and the number of times the car 10 moves to the power feeding floor can be reduced.
  • the determination value changing unit 34 changes the first determination value and the second determination value to values higher than the initial value. For this reason, when the battery remaining amount becomes lower than the changed first determination value and the second determination value, the amount of power supplied to the device used in the car 10 immediately decreases. Thereby, even in the congested time zone, it is possible to reduce the number of times the car 10 moves to the feeding floor.
  • FIG. 5 is a flowchart showing an example of a process of controlling the amount of power supplied to the devices used in the car 10.
  • the comparison unit 31 determines whether the remaining battery capacity is 50% or less of the storage capacity (S1). If it is determined that the battery remaining amount is not 50% or less of the storage capacity (NO in S1), the battery remaining amount is sufficient, and the present process is ended.
  • the power supply unit 32 reduces the power supplied to the illumination unit 24 and the display unit 26. At this time, for example, the brightness of the LED of the illumination unit 24 and the liquid crystal screen of the display unit 26 is lowered (S2).
  • the comparison unit 31 determines whether the remaining battery capacity is 30% or less of the storage capacity (S3).
  • the processing is ended in a state where the brightness of the LED of the illumination unit 24 and the liquid crystal screen of the display unit 26 is lowered.
  • the power supply unit 32 reduces the power supplied to the air conditioning unit 25. Thereby, the fan of the air-conditioning unit 25 is stopped (S4).
  • the operation control unit 35 determines whether or not the car 10 has stopped at the power feeding floor (S5), and receives the comparison result of the battery remaining amount by the comparison unit 31. After passing through step S3, the operation control unit 35 receives, from the comparison unit 31, a comparison result indicating that the battery remaining amount is determined to be 30% or less of the storage capacity.
  • the operation control unit 35 ends the present process.
  • the operation control unit 35 sets the time for the car 10 to open the car door 27 at the power feeding floor. The time for charging the battery 22 can be secured longer than the time for opening the car door 27 when stopped (S6). Thereafter, the process ends.
  • the operation status of the elevator 1 changes with time, and when the first determination value and the second determination value are fixed, there may be a case where the battery remaining amount immediately drops below the first determination value and the second determination value. is there. However, it is necessary to minimize the number of times the battery 22 is charged. Therefore, the power supply unit 32 performs a first process of changing the first determination value and the second determination value. An example of the first process in which the power supply unit 32 changes the first determination value and the second determination value will be described below with reference to FIGS. 6 and 7.
  • FIG. 6 is a flowchart showing an example of a first process in which the determination value changing unit 34 changes the first determination value and the second determination value.
  • FIG. 7 is an explanatory view showing an example of the average value of the battery remaining amount in the past one hour, and the changed first determination value and second determination value.
  • the determination value changing unit 34 determines whether or not the current time is a congested time zone (at work, at lunch, at work) (S11). ). When it is determined that the current time is in the congestion time zone (YES in S11), the determination value changing unit 34 changes the first determination value from 50% to 70%, and the second determination value from 30% to 50%. To (S12), and the process ends. In the congested time zone, since the remaining battery capacity tends to decrease, the control for reducing the amount of power supplied to the devices used in the car 10 is performed earlier to suppress the decrease in the remaining battery capacity. It will be.
  • the determination value changing unit 34 determines the average value of the remaining battery capacity for the past 1 hour from the current time (“average battery remaining amount”). It is determined whether or not the call is less than or equal to the current determination value (for example, the first determination value) (S13).
  • the current determination value used for the determination of step S13 may be the second determination value.
  • FIG. 7A shows that the average battery remaining amount is 50% or less, which is the current determination value. And in FIG. 7A, the present determination value is described as "the present 1st determination value.” If it is determined that the average battery remaining amount is equal to or less than the current determination value (YES in S13), the determination value changing unit 34 adds 10% to the current determination value (S14), and ends this processing. Thereby, the first determination value is changed from 50% to 60%. The second determination value may be changed from 30% to 40% by adding 10% to the second determination value in accordance with the change of the first determination value. In FIG. 7A, the changed first determination value is described as “new first determination value”, and the changed second determination value is described as “new second determination value”.
  • the power supplied to the devices used in the car 10 can be reduced if the battery remaining amount is likely to decrease even if the current time is not in the congested time zone.
  • the decrease in the remaining battery capacity can be suppressed.
  • the determination value changing unit 34 subtracts 10% from the current determination value (S15), and ends the present process.
  • FIG. 7B shows that the average battery remaining amount exceeds 50%, which is the current determination value. Thereby, the first determination value is changed from 50% to 40%.
  • the second determination value may be reduced from 30% to 20% by subtracting 10% from the second determination value in accordance with the change of the first determination value. As described above, if the current time is not the congested time zone and the operation state in which the battery remaining amount is hard to decrease, the current determination value is lowered to reduce the power supplied to the devices used in the car 10 Instead, the device can be maintained in normal use for a long time.
  • FIG. 1 described above shows an example in which the feeding floor is provided only on the first floor, the feeding floor can be provided on other floors.
  • the number of power feeding floors increases, the number of floors charging the battery 22 when the car 10 stops and the charging time become longer, but the cost of installing the power feeding floors also increases. For this reason, the number of floors on which the feed floor is installed varies depending on the building. Therefore, when the elevator 1 is installed, the determination value is changed according to the number of installation floors of the power supply floor with respect to all floors.
  • FIG. 8 is a flowchart illustrating an example of a second process in which the determination value changing unit 34 changes the first determination value and the second determination value. Initial values of the first determination value and the second determination value are 50% and 30%, respectively.
  • the determination value changing unit 34 determines whether the ratio of the power supply floor is high with respect to all floors (S21). For example, if one feeding floor is provided for every 5 floors, if there are 10 floors, two feeding floors are provided. In this case, the proportion of the feed floor is calculated to be 20%. Then, the determination value changing unit 34 sets that the ratio of the power feeding floor is 20% as a reference value when changing the determination value. Then, the determination value changing unit 34 maintains the first determination value and the second determination value if the ratio of the power supply floor is 20% or more, and the first determination value if the ratio of the power supply floor is less than 20%. And change the second judgment value.
  • the determination value changing unit 34 determines that the ratio of the power feeding floor is 20% or more and the ratio of the power feeding floor is high (YES in S21). In this case, the determination value changing unit 34 maintains the current determination value stored in advance in the determination value storage unit 33 as the initial value (S22), and ends this processing. Therefore, the first determination value is maintained at 50% and the second determination value is maintained at 30%.
  • the determination value changing unit 34 determines that the ratio of the power feeding floor is less than 20% and the ratio of the power feeding floor is low (NO in S21). In this case, the determination value changing unit 34 subtracts 5% from the current first determination value and second determination value stored in advance in the determination value storage unit 33 (S23), and ends this processing. At this time, the first determination value is changed to 45%, and the second determination value is changed to 25%. Then, the changed first determination value and second determination value are stored in the determination value storage unit 33 as initial values.
  • the power supply unit 32 supplies the equipment used in the car 10 with the power supply unit 32 based on the result of the comparison unit 31 comparing the current battery remaining amount with the determination value. Reduce the amount of power.
  • determination values of the remaining amount of the battery 22 can be provided in stages, and the amount of power supplied to the device can be changed according to each determination value. For example, when the current battery remaining amount becomes equal to or less than the first determination value, the amount of electric power supplied to the lighting unit 24 and the display unit 26 is decreased, and the current battery remaining amount is equal to or less than the second determination value. If it does, the amount of power supplied to the air conditioning unit 25 is reduced. Therefore, it is possible to suppress a decrease in the remaining battery charge until the battery 22 is charged. In addition, even if the current remaining battery capacity decreases, it does not cause inconvenience for the user who gets on the car 10.
  • the determination value changing unit 34 can change the first determination value and the second determination value in accordance with the operation status of the elevator 1. For example, the determination value changing unit 34 increases the first determination value and the second determination value if the frequency of use of the elevator 1 is high, and increases the first determination value and the second value if the frequency of use is low. 2 A change that decreases the judgment value is possible. Thus, by learning the operation status of the elevator 1, the determination value changing unit 34 can appropriately change the first determination value and the second determination value according to the learning result. Then, since the first determination value and the second determination value are changed to appropriate values, it is possible to delay the timing at which the power supply unit 32 reduces the amount of power supplied to the device used in the car 10 .
  • the determination value changing unit 34 can also change the first determination value and the second determination value which are set in advance according to the ratio of the power supply floor in all the floors. Therefore, the first determination value and the second determination value can be stored in the determination value storage unit 33 according to the buildings having different installation states of the feeding floor.
  • the determination value to be changed by the determination value changing unit 34 may be only one of the first determination value and the second determination value.
  • the power supply unit 32 may restore the amount of power of the power supplied to the device used in the car 10. Therefore, the brightness of the lighting unit 24 and the display unit 26 is recovered, and the fan of the air conditioning unit 25 also starts to rotate. Then, until the battery 22 is fully charged or the remaining battery charge is charged to 90% or more of the storage capacity, the amount of power supplied to the devices used in the car 10 remains reduced. For this reason, it is possible to suppress a decrease in the remaining battery capacity.
  • the elevator control device 3 may be provided in the car 10. Then, the elevator control device 3 itself may be supplied with power from the battery 22 to operate.
  • the determination values stored in the determination value storage unit 33 there are a first determination value and a second determination value. However, at least one determination value is sufficient. In addition, three or more determination values may be provided. Then, the power supply unit 32 may individually change the amount of power supplied to devices used in the car 10 finely divided for each determination value.
  • the present invention is not limited to the above-described embodiment, and it goes without saying that various other application examples and modifications can be taken without departing from the scope of the present invention described in the claims.
  • the above-described embodiment is a detailed and specific description of the configuration of the device in order to explain the present invention in an easy-to-understand manner, and is not necessarily limited to one having all the configurations described.
  • control lines and information lines indicate what is considered to be necessary for the description, and not all control lines and information lines in the product are necessarily shown. In practice, almost all configurations may be considered to be mutually connected.

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  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Elevator Control (AREA)

Abstract

Selon la présente invention, une cabine comprend : une batterie permettant de stocker de l'électricité qui est fournie à un dispositif utilisé dans la cabine ; et une unité de réception d'électricité qui reçoit de l'électricité fournie par une unité d'alimentation électrique installée sur un étage d'alimentation électrique dans une cage d'ascenseur, et qui charge la batterie. Un dispositif de commande d'ascenseur comprend : une unité comparateur permettant de comparer la quantité d'électricité restante stockée dans la batterie et une valeur de détermination prédéterminée ; et une unité d'alimentation électrique permettant de réduire la quantité d'électricité fournie au dispositif lorsque la quantité d'électricité restante n'est pas supérieure à la valeur de détermination.
PCT/JP2018/037015 2017-11-28 2018-10-03 Ascenseur et dispositif de commande d'ascenseur WO2019106949A1 (fr)

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Application Number Priority Date Filing Date Title
CN201880067144.5A CN111212801B (zh) 2017-11-28 2018-10-03 电梯以及电梯控制装置
JP2019557037A JP6850362B2 (ja) 2017-11-28 2018-10-03 エレベーター及びエレベーター制御装置

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JP2017227426 2017-11-28
JP2017-227426 2017-11-28

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WO2019106949A1 true WO2019106949A1 (fr) 2019-06-06

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CN115315399A (zh) * 2020-03-30 2022-11-08 三菱电机株式会社 电梯

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JP2013071796A (ja) * 2011-09-27 2013-04-22 Toshiba Elevator Co Ltd エレベータの非接触給電システム
JP2013133180A (ja) * 2011-12-26 2013-07-08 Mitsubishi Electric Corp エレベータのドア制御装置
JP2016145088A (ja) * 2015-02-06 2016-08-12 東芝エレベータ株式会社 エレベータの非接触給電システム
JP2017057054A (ja) * 2015-09-16 2017-03-23 東芝エレベータ株式会社 エレベータの非接触給電システム

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CN115315399A (zh) * 2020-03-30 2022-11-08 三菱电机株式会社 电梯

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