JP5892757B2 - Elevator contactless power supply system - Google Patents

Description

  Embodiments of the present invention relate to an elevator non-contact power supply system that supplies electric power necessary for operation of an elevator in a non-contact manner.

  In recent years, interest in non-contact power supply technology has increased, and it has come to be used in various fields. The non-contact power supply technology mainly uses the principle of electromagnetic induction, and transmits electric power in a non-contact manner by generating an electromotive force by applying an alternating magnetic flux generated in the primary coil to the secondary coil. Technology.

  Currently, the introduction of non-contact power feeding technology is particularly popular in electric vehicles. In addition, technology introduction is being studied for the purpose of making cordless in the hoistway in an elevator. As a system using non-contact power supply technology, a rail type (moving type) system in which the power receiving unit moves along the power supply line, and a charge type (fixed) in which the primary side and secondary side of the transformer are placed at fixed positions across a gap Type) system.

  In elevators, either method can be used. However, since the rail type system has a demerit that the power feeding system becomes larger in proportion to the length of the rail when the lifting process becomes long, the charge type system is considered to be effective. In this case, in the configuration in which the car is a power supply target, the car is provided with a battery, and power is supplied by moving the car to the power supply device.

JP 2009-286635 A

  In the charge type system described above, when the remaining amount of the battery drops below a certain value, it is necessary to supply power by moving the car to the installation position of the power supply device. For this reason, for example, if the battery power is greatly consumed in continuous operation, the operation must be interrupted and power must be supplied, resulting in poor elevator operation efficiency.

  The problem to be solved by the present invention is to provide a contactless power feeding system for an elevator that can prevent operation interruption due to power feeding and can continue a driving service safely.

  The contactless power feeding system for an elevator according to the present embodiment includes a plurality of units, and in the contactless power feeding system for an elevator that feeds power in a non-contact manner to a battery installed in a car of these units, a landing on each floor Corresponding to the hall destination floor registration device installed in the group, the group management control device for assigning the hall call including the destination floor of the user registered by the hall destination floor registration device to any one of the above units And a plurality of car control devices that individually control the operation of the car of each car based on a hall call assigned by the group management control device.

Each of the above-mentioned unit control devices detects power necessary for the response of each hall call obtained by adding a new hall call to the hall call already assigned to the unit, and detects the power of the battery. The battery power detection means, the value obtained by adding the preset standby power to the required power predicted by the power prediction means, and the battery power detected by the battery power detection means are compared, and the comparison result is obtained. And additional call control means for controlling the allocation of the new hall call to the corresponding car.
The additional call control means outputs an assignment prohibition command for prohibiting the assignment of the new hall call when there is a unit in which a value obtained by adding the reserve power to the required power is larger than the power of the battery. Output to the group management controller.
Each of the unit control devices responds to all the hall calls already assigned to the unit before the new hall call when the allocation prohibition command is output by the additional call control means. The apparatus further includes power supply control means for supplying power by moving the car of the car to a predetermined power supply floor .

FIG. 1 is a diagram illustrating a configuration of an elevator non-contact power feeding system according to an embodiment. FIG. 2 is a diagram illustrating an example of a table provided in the registration control unit of the group management control device according to the embodiment. FIG. 3 is a block diagram showing a functional configuration of the machine control device in the same embodiment. FIG. 4 is a flowchart showing the processing operation of the machine control device in the same embodiment.

  Hereinafter, embodiments will be described with reference to the drawings.

  FIG. 1 is a diagram illustrating a configuration of an elevator non-contact power feeding system according to an embodiment. In the example of FIG. 1, a configuration in which three elevators are group-managed is shown, but the configuration is not limited to this configuration. The elevator referred to here is mainly a passenger car. When there are a plurality of elevators, the elevator is also referred to as “unit”.

  The machine control devices 11a, 11b, and 11c are provided corresponding to the cars 12a, 12b, and 12c of each car (A, B, and C), and drive control of a hoisting machine (not shown) and opening / closing of a door are performed. Control the unit itself including control. The cars 12a, 12b, 12c move up and down in the hoistway by driving a hoisting machine (not shown).

  On the other hand, a landing destination floor registration device 13 is installed at the landing on each floor. The landing destination floor registration device 13 is a device for a user to register a destination floor at the landing on each floor, an operation unit 14 for registering the destination floor, and a display unit 15 for displaying the assigned number machine. Have As a destination floor registration method, a method using a numeric keypad is generally used. However, a method using a card reader or a wireless IC may be used as long as registration is possible at the landing.

  When the destination floor is registered by the landing destination floor registration device 13, a hall call having two sets of information of the destination floor and the registration floor (the floor on which the user has performed the registration operation) as one set is called a group management control device. 20 is output.

  The group management control device 20 is a device that performs group management control on the operation of each car (cars 12a, 12b, 12c). The group management control device 20 includes a registration control unit 21 and an allocation control unit 22. These are processing units executed by software on a microprocessor, and information can be exchanged between the respective units as shown in FIG.

  The registration control unit 21 has a table 21a as shown in FIG. 2, and stores hall call information and assigned car numbers in the table 21a for each registration of the destination floor. As described above, the hall call includes two pieces of information: the destination floor and the registered floor. Also, the assigned number means a number assigned a hall call by the assignment control unit 22.

  In the example of FIG. 2, the registration floor: 10F, the destination floor: 1F, and the assigned number machine: No. A machine are registered at the top of the table 21a. This means that the user operates the 10F landing destination floor registration device 13 to register 1F as the destination floor, and at that time, Unit A is assigned.

  The allocation control unit 22 selects the most appropriate car to which the hall call is assigned based on the operation information (car position, driving direction, door open / closed state, etc.) of each car, and makes the car respond to the registration floor as the car assigned. In addition, as a method of assigning elevators to hall calls, generally known methods are used. In general, for example, a method is used in which an evaluation value is obtained based on information such as the position and direction of the car of each car, and the car having the highest evaluation value is assigned as the optimum car.

  The above is the configuration of a general elevator group management system including a landing destination floor registration device. In the present embodiment, a contactless power feeding system is used for the group management system in this elevator.

That is, power feeding devices 31a, 31b, and 31c corresponding to each unit are installed in the hoistway. These feeding devices 31a, 31b, 31c, each Unit of the car 12a, 12b, and 12c and the power supply object, to power the car 12a, 12b, the power required by 12c in a non-contact manner. In addition, the installation positions of the power feeding devices 31a, 31b, and 31c are different for each unit, and are set in accordance with predetermined distributed standby floors. For example, the power supply device 31a for Unit A is installed on the top floor, the power supply device 31b for Unit B is installed on the middle floor, and the power supply device 31c for Unit C is installed on the bottom floor.

  On the other hand, the cars 12a, 12b, 12c of each car are provided with power receiving devices 32a, 32b, 32c and batteries 33a, 33b, 33c, respectively.

  The power receiving device 32a receives electric power fed in a non-contact manner from the power receiving device 32a while facing the power feeding device 31a on the hoistway side, and stores it in the battery 33a. The electric power stored in the battery 33a is used for various devices in the car (for example, lighting devices and door motors).

  The same applies to the power receiving devices 32b and 32c. The power receiving device 32b receives the electric power supplied from the power receiving device 32b in a non-contact manner in a state of facing the power feeding device 31b on the hoistway side and stores it in the battery 33b. The power receiving device 32 receives electric power fed in a non-contact manner from the power receiving device 32c while being opposed to the power feeding device 31c on the hoistway side, and stores it in the battery 33c.

  In addition, it is also possible to use the electric power of the batteries 33a, 33b, and 33c as driving electric power for a motor of a hoisting machine (not shown) provided for each unit. In this case, the batteries 33a, 33b, and 33c need to have a relatively large capacity.

  In addition, as a non-contact power feeding method, for example, an electromagnetic induction method is used. The “electromagnetic induction method” is a method of transmitting power to the other coil (power receiving side coil) through the magnetic flux generated when a current is passed through one of the two adjacent coils (power feeding side coil). In addition to this, there are a "radio wave system" that converts current into electromagnetic waves and transmits power through an antenna, and an "electromagnetic field resonance system" that uses the resonance phenomenon of electromagnetic fields. It is not limited.

  Here, in the present embodiment, the machine controller 11a, 11b, 11c corresponding to each machine is provided with a function for realizing a non-contact power feeding system. FIG. 3 shows the configuration of the No. A machine control device 11a as a representative of the No. machine control devices 11a, 11b, and 11c of each No. machine.

  FIG. 3 is a block diagram showing a functional configuration of the machine A control device 11a of the A machine. In addition, it is the same structure also about the machine control apparatus 11b of the No. B machine, and the machine control apparatus 11c of the C machine.

  The unit controller 11a is provided with a call response control unit 41, a power prediction unit 42, a battery power detection unit 43, an additional call control unit 44, and a power supply control unit 45 as functions for realizing a non-contact power supply system. Yes.

  The call response control unit 41 performs response control for the hall call assigned by the group management control device 20, and has a call storage unit 41a for storing information (registration floor and destination floor) of the hall call. . When Unit A is not responding to the hall call, the call response control unit 41 issues a standby instruction to the power supply control unit 45 to move the Unit A to a predetermined distributed standby floor, from the power supply device 31a. Wait while receiving power. On the other hand, when Unit A is responding to the hall call, the call response control unit 41 gives the hall prediction information stored in the call storage unit 41a to the power prediction unit 42 to perform power prediction.

The power prediction unit 42 predicts the power Pn required for the response of the hall call by the No. A machine. In this case, since the elevator of this system is provided with the landing destination floor registration device 13, the operation schedule of the No. A machine can be grasped in advance, and the electric power Pn required for the call response can be predicted from the operation schedule. This required power Pn is obtained by adding the power Pa required to move from the current position to the registration floor of the hall call and the power Pb required to move from the registration floor to the destination floor.

  The battery power detection unit 43 detects the power Pk of the battery 33a provided in the car 12a of the car A. Specifically, the voltage value of the battery 33a is acquired from the car 12a, and the electric power Pk currently remaining in the battery 33a is detected from the voltage value.

The additional call control unit 44 compares the value obtained by adding the reserve power Pc to the required power Pn (Pa + Pb) predicted by the power prediction unit 42 and the power Pk of the battery 33a detected by the battery power detection unit 43, and Based on the comparison result, the allocation of additional calls to Unit A is controlled. The reserve power Pc is a fixed value, and is set in consideration of, for example, a case where the user opens the door for a long time. If Pn + Pc> Pk, an assignment prohibition command for prohibiting the assignment of additional calls to Unit A is output to the group management control device 20. The “additional call” refers to a hall call (new hall call) that is newly added to the hall call already assigned to the relevant unit.

  The power supply control unit 45 controls the driving of the hoisting machine of Unit A (not shown) in accordance with the output of the assignment prohibition command, and moves the car 12a to a predetermined power supply floor to perform power supply. As described above, the power feeding positions of the respective units are different, and the power feeding devices 31a, 31b, and 31c are installed according to the distributed standby floor.

  In such a configuration, when the user registers the destination floor by operating the landing destination floor registration device 13 installed at the landing on each floor, information on the hall call including the registration floor is issued to the destination floor, and the group It is sent to the management control device 20. In the group management control device 20, the hall call information (destination floor and registration floor) sent from the hall destination floor registration device 13 is stored in the table 21 a of the registration control unit 21, and then the hall call is sent through the assignment control unit 22. Is assigned to one of the units.

  When the assigned number is determined, information on the assigned number is stored in the table 21a in association with the hall call. Also, a hall call assignment command is output to the number control devices corresponding to the number assigned devices in the number control devices 11a, 11b, 11c of each number. In response to this allocation command, the number control device responds to the hall call and supplies power as necessary while monitoring the battery power of its number.

Hereinafter, the operation related to the battery power will be described in detail with a focus on Unit A.
FIG. 4 is a flowchart showing the processing operation of the No. A machine control device 11a. The same processing is performed for the machine control device 11b of the B machine and the machine control device 11c of the C machine.

  First, the car control device 11a determines whether or not the car A is responding to the hall call (step S11). This is performed by referring to the call storage unit 41a provided in the call response control unit 41. In the case where No. A is not responding to the hall call, that is, when no call hall information is stored in the call storage unit 41a (NO in Step S11), the No. 11 control device 11a uses the power supply control unit 45 to The car 12a is moved to the power supply floor, and is placed on standby while receiving power from the power supply device 31a (step S12). The electric power fed from the power feeding device 31a is stored in the battery 33a through the power receiving device 32a of the car 12a.

  If the A car is responding to the hall call (YES in step S11), the car controller 11a responds while predicting the power Pn required for the hall call response through the power prediction unit 42 (step S13). Specifically, the electric power Pa required to move from the current position to the registration floor of the hall call and the electric power Pb required to move from the registration floor to the destination floor are obtained, and the power obtained by adding these is required for the call response. Obtained as power Pn.

  Moreover, the number machine control apparatus 11a detects the electric power Pk of the battery 33a provided in the car 12a of the number A car through the battery power detection unit 43 (step S14). Here, as a result of comparing the value obtained by adding the preset power Pc to the power Pn required for the call response and the power Pk of the battery 33a (Pn + Pc ≦ Pk) (NO in step S15), the hall call is performed as it is. In response to, continue operation.

  On the other hand, if Pn + Pc> Pk, that is, if the value obtained by adding the reserve power Pc to the power Pn required for the call response is larger than the power Pk of the battery 33a (YES in step S15), the number control device 11a Outputs an assignment prohibition command to the group management control device 20 through the additional call control unit 44 in order to prohibit the assignment of the additional call to the A machine (step S16). When the group management control device 20 receives the assignment prohibition command, the group A control apparatus 20 is excluded from the group management target. As a result, even when a new hall call is generated, it is not assigned to Unit A, so that it is possible to suppress battery power consumption.

  Further, the machine control device 11a refers to the call storage unit 41a and responds to all the remaining hall calls, and then moves the car 12a of the A machine to the power supply floor through the power supply control unit 45 to supply power ( Step S17). During this time, Unit A is disconnected from group management.

  When electric power of a certain value or more is stored in the battery 33a of the car 12a on the power supply floor, the machine control device 11a determines that charging is complete (YES in step S18), and the group call is issued to cancel additional call assignment prohibition. It outputs to the control apparatus 20 (step S19). As a result, Unit A returns to group management and waits for a new hall call assignment command on the power supply floor.

In this way, when each unit responds to the hall call, if there is little remaining battery power, the allocation of additional calls is prohibited and the power is moved to the power supply floor to supply power. It is possible to prevent the battery from running out. Moreover, although it is away from group management during electric power feeding, since other cars can respond to a hall call, driving service can be continued.

  Further, when each unit is not responding to the hall call, it is possible to respond to a new hall call in a state in which the battery power is sufficiently secured by allowing the power supply floors to be distributed and waiting.

  According to at least one embodiment described above, it is possible to provide a contactless power feeding system for an elevator that can prevent operation interruption due to power feeding and can safely continue the driving service.

  In addition, although some embodiment of this invention was described, these embodiment is shown as an example and is not intending limiting the range of invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  11a, 11b, 11c ... Unit control device, 12a, 12b, 12c ... Car, 13 ... Landing destination floor registration device, 14 ... Operation unit, 15 ... Display unit, 20 ... Group management control device, 21 ... Registration control unit, 21a ... Table, 22 ... Allocation control unit, 31a, 31b, 31c ... Power feeding device, 32a, 32b, 32c ... Power receiving device, 33a, 33b, 33c ... Battery, 41 ... Call response control unit, 41a ... Call storage unit, 42 ... Power prediction unit, 43 ... Battery power detection unit, 44 ... Additional call control unit, 45 ... Power supply control unit.

Claims (3)

In an elevator non-contact power supply system that has a plurality of units and supplies power to the batteries installed in the cars of these units in a non-contact manner,
A landing destination floor registration device installed at the landing on each floor,
A group management control device that assigns a hall call including the destination floor of the user registered by the hall destination floor registration device to any one of the above units,
A plurality of unit control devices that are provided corresponding to each unit and that individually control the operation of the car of each unit based on the hall call assigned by the group management control unit,
Each of the above unit control devices
A power prediction means for predicting the power required for the response of each hall call obtained by adding a new hall call to the hall call already assigned to the unit;
Battery power detection means for detecting the power of the battery;
A value obtained by adding a preset standby power to the required power predicted by the power prediction means is compared with the power of the battery detected by the battery power detection means, and based on the comparison result, Additional call control means for controlling the allocation of new hall calls ,
The additional call control means is:
When there is a unit whose value obtained by adding the reserve power to the required power is larger than the power of the battery, an assignment prohibition command for prohibiting the assignment of the new hall call is output to the group management control device. ,
Each of the above unit control devices
When the above-mentioned allocation prohibition command is output by the additional call control means, after responding to all the hall calls already assigned to the relevant car before the new hall call, the car of the relevant car is predetermined. A contactless power feeding system for an elevator, further comprising power feeding control means for feeding power by moving to a power feeding floor . The group management control device is
By receiving the assignment prohibition command, until the Unit has completed feeding, non-contact power supply system for an elevator according to claim 1, characterized in that the excluded from group management. Each of the above unit control devices
2. The contactless power feeding system for an elevator according to claim 1, wherein when the car is not responding to the hall call, the elevators are placed on standby in a predetermined power feeding floor.

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