JP2014172668A - Elevator system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve a problem in which there is room for improvement in, for example, operation at the time of power failure in a prior art.SOLUTION: An elevator system includes: a plurality of elevators; and a control device. The plurality of elevators can be operated by power from a power supply and power from power storage devices respectively mounted on the elevators. The control device can perform control for allocating elevators answering landing hall calls among the plurality of elevators on the basis of a residual power storage amount of each of the power storage devices, when the landing hall calls are issued from landing halls of the plurality of elevators while the elevators are operated using the power of the power storage devices in the case of power failure of the power supply.

Description

  Embodiments described herein relate generally to an elevator system.

  Conventionally, an elevator moves a car to an arbitrary floor by moving the car in a hoistway. A plurality of such elevators may be provided in a building to constitute a group of elevator systems.

JP 2011-063428 A

  By the way, in the prior art, there is room for further improvement in terms of operation at the time of a power failure, for example.

  The elevator system according to the embodiment includes a plurality of elevators and a control device. The plurality of elevators can be operated by electric power from a power source for power and electric power from a power storage device provided in each. The control device, when the elevator is operated using the power of the power storage device at the time of a power failure of the power source, and when a landing call is made from the landing of the plurality of elevators, the remaining power storage amount of each power storage device Based on the above, it is possible to execute control for allocating an elevator responding to the hall call from the plurality of elevators.

FIG. 1 is a block diagram illustrating a schematic configuration example of an elevator system according to an embodiment. FIG. 2 is a diagram illustrating an example of a storage amount evaluation value map in the elevator system according to the embodiment. FIG. 3 is a flowchart illustrating an example of control in the elevator system according to the embodiment. FIG. 4 is a flowchart illustrating an example of control in an elevator system according to a modification.

[Embodiment]
FIG. 1 is a block diagram illustrating a schematic configuration example of an elevator system according to an embodiment. FIG. 2 is a diagram illustrating an example of a storage amount evaluation value map in the elevator system according to the embodiment. FIG. 3 is a flowchart illustrating an example of control in the elevator system according to the embodiment. FIG. 4 is a flowchart illustrating an example of control in an elevator system according to a modification.

  As shown in FIG. 1, the elevator system 1 of the present embodiment includes a group management control device 51, and manages the elevator group 2 as a group to provide an efficient operation service. Here, the elevator group 2 is composed of a plurality of elevators 3 of No. A, No. B, No. C, and No. D. The elevator group 2 performs an operation service by each of the plurality of cages 4 moving up and down the hoistway. The group management control device 51 can service a plurality of floors by a plurality of elevators 3. The group management control device 51 typically assigns the elevator 3 that responds to the hall call from the hall 8 of the elevator group 2 from the plurality of elevators 3 according to the state of the plurality of cages 4 of the elevator group 2 and the like. Control can be performed. The elevator system 1 typically has an elevator power source backup capable of controlling each elevator 3 with a battery 53 as a power storage device installed for each unit even in a power failure state and performing a so-called continuous operation during a power failure. It is also a system.

  In the following description, the elevator system 1 is described as including the four elevators 3 of No. A, No. B, No. C, and No. D as the elevator group 2, but is not limited thereto. The elevator system 1 may include two to three elevators 3 as the elevator group 2, or may include five or more. Moreover, in the following description, the four elevators 3 of No. A, No. B, No. C, No. D will be described as simply the elevator 3 without distinguishing the four unless otherwise specified.

  The elevator system 1 according to the present embodiment includes the plurality of elevators 3 and a control device 50 that controls the plurality of elevators 3. The plurality of elevators 3 can be operated by the power from the power source 60 for power and the power from the battery 53 provided in each. The control device 50 includes the group management control device 51 described above, a single control device 52 described later, a battery 53 as a power storage device, a power control device 54, and the like. A plurality of the single control device 52, the battery 53, and the power supply control device 54 are provided corresponding to the plurality of elevators 3, respectively. Note that the group management control device 51, each single control device 52, and each power control device 54 may be integrally configured by one control device.

  Each elevator 3 includes a basket 4, a counterweight 5, a main rope 6, a hoisting machine 7, and the like. Each elevator 3 is a so-called elevator type elevator in which a car 4 and a counterweight 5 are connected by a main rope 6. Each elevator 3 is provided with a common hall 8.

  The basket 4 can move up and down a hoistway provided in the building. The car 4 includes a car call registration device 9, a car guide device 10, a load detector 11, and the like. The basket call registration device 9 is provided inside the basket 4. The basket call registration device 9 performs so-called basket call registration in response to an operation input by the user. The basket guide device 10 is provided in the basket 4. The basket guidance device 10 includes, for example, a buzzer that can output a notification sound, a speaker that can announce various audio information, a display device that can display various display information, and the like. The load detector 11 detects the loaded load in the basket 4.

  The counter weight 5 is a counterweight for the cage 4.

  The main rope 6 is hung on the main sheave 7a of the hoisting machine 7 provided at the upper part of the hoistway, the deflecting sheave (not shown) or the like. The main rope 6 has a cage 4 connected to one end and a counterweight 5 connected to the other end.

  The hoisting machine 7 includes, for example, an electric motor (motor) 7b that generates power. Electric power is supplied to the electric motor 7b from the power source 60 and the battery 53 via the control device 50 and the like. In the hoisting machine 7, when the electric motor 7b is driven, the main sheave 7a connected to the electric motor 7b is rotationally driven. The hoisting machine 7 electrically winds up the main rope 6 using a frictional force generated between the main sheave 7 a and the main rope 6. Moreover, the electric motor 7b can also perform regenerative power generation. In other words, the electric motor 7b is a so-called rotating electric machine, and functions as a motor (power running function) that converts supplied electric power into mechanical power and functions as a generator that converts input mechanical power into electric power. (Regenerative function).

  The landing 8 is provided on each elevator stop floor where the car 4 can land. Each hall 8 includes a hall call registration device 12, a hall guidance device 13, a camera 14, and the like. The hall call registration device 12 performs so-called hall call registration according to an operation input by the user. The hall guidance device 13 includes, for example, a buzzer that can output a notification sound, a speaker that can announce various audio information, a display device that can display various display information, and the like. The camera 14 captures images, moving images, and the like in the vicinity of the hall 8.

  The group management control device 51 of the control device 50 includes a microcomputer having a CPU (Central Processing Unit), a ROM, a RAM, a backup RAM, and an input / output port device connected to each other by a bidirectional common bus of a normal type. A drive circuit is provided. A ROM (Read Only Memory) stores a predetermined control program and the like in advance. A RAM (Random Access Memory) temporarily stores a calculation result of the CPU. The backup RAM stores map data prepared beforehand, information such as the specifications of the elevator 3, and the like. The group management control device 51 is electrically connected to each single control device 52 of the plurality of elevators 3, the hall call registration device 12, the hall guidance device 13, the camera 14, and the like. The group management control device 51 communicates and exchanges information such as detection signals, drive signals, and control commands with each single control device 52 of the plurality of elevators 3 to manage the elevator group 2 as a group.

  The single control device 52 of the control device 50 includes a microcomputer having a CPU (Central Processing Unit), a ROM, a RAM, a backup RAM, and an input / output port device connected to each other by a bidirectional common bus of a normal type. It has a circuit. A ROM (Read Only Memory) stores a predetermined control program and the like in advance. A RAM (Random Access Memory) temporarily stores a calculation result of the CPU. The backup RAM stores information such as map data prepared in advance and specifications of the corresponding elevator 3. One single control device 52 is provided for each elevator 3. Each single control device 52 is electrically connected to each part of each elevator 3 such as various sensors, detectors, car call registration device 9, car guide device 10, load detector 11, power supply control device 54, and the like. Each single control device 52 comprehensively controls the operation of each part of each elevator 3 single unit. Each single control device 52 controls the driving of the hoisting machine 7 in accordance with an operation input from the user to the car call registration device 9, the hall call registration device 12, etc. Move up and down. Thereby, each elevator 3 can move the basket 4 to the designated destination floor according to call registration.

  Here, as described above, the plurality of elevators 3 according to the present embodiment are supplied with electric power from the power source 60 for driving, and are further provided with a battery 53. The power source 60 for motive power is a main power source used mainly during normal operation of the elevator system 1. Typically, a so-called commercial power source (three-phase AC power source) or the like is used as the power source 60 for power. For example, a private power generation device or the like may be used.

  On the other hand, the battery 53 is an emergency auxiliary power source that is mainly used at the time of a power failure of the elevator system 1, that is, at the time of power failure when the power supply from the power source 60 is stopped. It can also be used for the purpose of assisting the power from the power source 60. As the battery 53, a so-called storage battery (secondary battery) or the like is typically used. One battery 53 is provided for each elevator 3. Each battery 53 is provided with an ammeter 53a and a voltmeter 53b. Each ammeter 53a and each voltmeter 53b can transmit a detection value to the group management control device 51 via each power supply control device 54, each single control device 52, and the like.

  One power control device 54 of the control device 50 is provided for each elevator 3. Each power control device 54 controls charging / discharging of each battery 53. Each power control device 54 is connected to a corresponding single control device 52 and a battery 53 in each unit, and is also connected to a power source 60 for power. For example, the power control device 54 rectifies the alternating current supplied from the power source 60 for power and converts it into direct current, the smoothing capacitor that rectifies the direct current converted by the converter device, and the direct current smoothed by the smoothing capacitor. It has an electric circuit including an inverter device or the like that converts it into alternating current that can be used by the electric motor 7b of the upper machine 7 or the like.

  In addition, the power supply control device 54 can appropriately switch the power for operating the elevator 3 in accordance with the supply state of power from the power source 60 for power, and can perform charge / discharge control of the battery 53. The power control device 54 uses power supplied from at least one of the power source 60 for power and the battery 53 as power for driving the elevator 3, and each unit control device 52 uses each power to control each part. Operate and operate the elevator 3. For example, during normal operation in which the power supply 60 is healthy, the power supply controller 54 mainly uses power supplied from the power supply 60 as power used for moving the car 4. At the time of a power failure, the power supplied from the battery 53 is used as the power used to move the car 4. The power supply control device 54 may use the power supplied from the battery 53 for the purpose of assisting the power from the power source 60 during normal operation. In addition, the power supply control device 54 is regeneratively generated by the electric motor 7b during a normal operation or during a regenerative operation of the elevator 3 during a power failure during a normal operation of the elevator system 1. The battery 53 can be charged using regenerative power.

  The elevator system 1 configured as described above operates as follows when a call operation of the car 4 is performed by a user via the car call registration device 9, the hall call registration device 12, or the like as a normal operation. To do. That is, in the elevator system 1, a car call registration signal corresponding to this is input from the car call registration device 9 to the single control device 52. Alternatively, in the elevator system 1, a hall call registration signal corresponding to this is input from the hall call registration device 12 to the group management control device 51. In the elevator system 1, the single control device 52 or the group management control device 51 performs car call registration and hall call registration of the car 4 in response to the call registration signal.

  The group management control device 51 executes, for example, group management control that allocates an optimal car 4 that responds to call registration from a plurality of cars 4 of each elevator 3 according to the state of each car 4. The group management control device 51 performs a predetermined evaluation calculation on the generated call based on the state of each elevator 3 and each car 4. The group management control device 51, for example, has a car call registration signal, a hall call registration signal, outputs from various sensors and detectors, a current position and a moving direction (up and down direction) of the car 4, and a hall call predicted to be generated in the future. The above-mentioned evaluation calculation is performed based on the car call and the predicted destination floor. Then, the group management control device 51, for example, in response to the predetermined evaluation calculation, the landing of the car 4 so that each car 4 responds optimally to each call while rationally moving in terms of transportation efficiency. An allocation process is performed in which a basket 4 that responds to each call is determined by determining an order and the like, and the response basket 4 is determined. Then, the group management control device 51 efficiently allocates the operation of the plurality of baskets 4 and performs an efficient operation service as the entire elevator group 2.

  Each unit control device 52 has a group management control device 51 based on the car call registration signal, the hall call registration signal, outputs from various sensors and detectors, the current moving direction (lifting direction) of the car 4, and the like. Each hoisting machine 7 is driven and controlled in accordance with the assigned output from. Thereby, each single-unit control apparatus 52 moves each cage | basket | car 4 to the target floor. As a result, in each elevator 3, the cage 4 moves up and down in the vertical direction in the hoistway and moves to the landing 8 on an arbitrary destination floor. In each elevator 3, when it is detected that the car 4 has landed at the landing 8 on the destination floor and has landed at a predetermined landing position, the single control device 52 then opens the door. As a result, a user standing by at the hall 8 can get into the basket 4. In addition, users in the basket 4 can get off at the landing 8.

  And the control apparatus 50 of this embodiment can perform continuous operation at the time of a power failure by the battery 53 installed for every each unit in each elevator 3 also in the power failure state of the power source 60 for power. That is, the control device 50 according to the present embodiment can be executed by switching between the normal operation described above and the continuous operation at the time of power failure described later (operation at the time of power failure).

  The normal operation is an operation when the power source 60 is healthy, and is an operation in which the car 4 is moved up and down by the electric power from the power source 60. Note that the control device 50 may further use the electric power of the battery 53 as the assisting electric energy in the normal operation as described above.

  On the other hand, the continuous operation at the time of a power failure is an operation different from the normal operation and is an operation at the time of a power failure of the power source 60 for power. The continuous operation at the time of a power failure is an operation in which the car 4 is moved up and down by the power from the battery 53 when the power source 60 is powered down. Furthermore, the continuous operation at the time of a power failure is an operation in which the car 4 is continuously raised and lowered by the power from the battery 53 when the power source 60 for power supply is interrupted. The continuous operation at the time of a power failure may be, for example, an operation in which various restrictions are provided with respect to the normal operation, and the amount of power used is suppressed and the car 4 is moved up and down as compared with the normal operation. For example, in the case of continuous operation during a power failure, each single controller 52 suppresses the load on the motor 7b by relatively lowering the lifting speed of the cage 4 as compared with the case of normal operation. Compared with the power consumption. In addition, the group management control device 51 and each single control device 52, for example, in the continuous operation during a power failure, control the car guidance device 10 and the landing guide device 13 to provide guidance regarding the continuous operation during a power failure (for example, waiting time or service available The remaining time, guidance for prompting use of stairs, etc.) may be performed. Thereby, the elevator system 1 can make a user know that the elevator 3 is continuing operation at the time of a power failure.

  Typically, each single control device 52 of the control device 50 performs normal operation when the power source 60 for power is healthy. Then, when the power source 60 for power supply fails, the individual control devices 52 are switched from the normal operation to the continuous operation at the time of power failure by switching the power supply system under the control of the power supply control device 54. In addition, when the power source 60 for power is restored, the single control devices 52 are switched from the continuous operation at the time of power failure to the normal operation by switching the power system under the control of the power source control device 54.

  By the way, the elevator system 1 of the present embodiment responds to calls generated based on the unanswered time of each hall call and the like for a new hall call even during continuous operation during a power failure. When a predetermined evaluation calculation is performed and an allocation is output to a car that optimally responds to the call, there is a risk that the battery consumption for each car will vary. For this reason, the elevator system 1 has a variation in the remaining power storage amount of each battery 53, for example, the time during which all the units can be operated is relatively short, and as a result, the occurrence frequency of long waits may increase. For example, when the elevator system 1 operates with four elevators 3 and the remaining power storage amount of the batteries 53 of the two elevators 3 is depleted at an early stage, the remaining two elevators 3 thereafter. As a result, there is a risk that the occurrence frequency of long waiting will increase as described above.

  Therefore, the group management control device 51 of the control device 50 of the present embodiment calls the hall from the halls 8 of the plurality of elevators 3 in a state where the elevator 3 is operated using the power of the battery 53 when the power source 60 for power supply is interrupted. In the case where the control is performed, the control for allocating the elevator 3 responding to the hall call from the plurality of elevators 3 can be executed based on the remaining power storage amount of each battery 53. That is, the group management control device 51 of the present embodiment takes into account the remaining power storage amount of the battery 53 of each vehicle in the evaluation calculation when determining the assigned vehicle for a new hall call during continuous operation during a power failure. The variation of the remaining amount of electricity stored in the battery 53 of each unit is suppressed, and the time that can be operated by all the units can be extended.

  Specifically, the group management control device 51 periodically receives detection results from the ammeters 53a and voltmeters 53b of the batteries 53 via the power supply control devices 54, the individual control devices 52, and the like. Based on the result, the current value and voltage value of each battery 53 are monitored, and the remaining power storage amount of each battery 53 is monitored. Then, the group management control device 51 calculates the evaluation value of each elevator 3 according to the state of each elevator 3 and the remaining power storage amount of each battery 53 when a landing call is made during continuous operation during a power failure. And evaluate the selection of assigned units for the hall call. That is, the group management control device 51 reflects the remaining power storage amount of each battery 53 in the evaluation.

  Here, the group management control device 51 sets the evaluation value such that the elevator 3 that is operated with the electric power of the battery 53 is relatively easily selected as the remaining power storage amount of the battery 53 is relatively large. On the other hand, the group management control device 51 sets the evaluation value such that the elevator 3 that is operated with the electric power of the battery 53 is relatively difficult to select as the remaining amount of electricity stored in the battery 53 is relatively small. Then, the group management control device 51 selects the elevator 3 that responds to the hall call from the plurality of elevators 3 based on the calculated evaluation value.

The group management control device 51, for example, calculates the evaluation value Ex (H) of each elevator 3 based on the following formula (1) when a new hall call is generated during continuous operation during a power failure. The evaluation value Ex (H) represents the evaluation value of the x machine for the new hall call H. The group management control device 51 selects the elevator 3 (unit) having the smallest evaluation value Ex (H) calculated using the formula (1) as the optimum elevator 3 (optimum unit) that responds to the hall call.
Ex (H) = α1 × E1 (x, H) + α2 × E2 (x) (1)

  In Equation (1), “E1 (x, H)” is a corresponding unit state index corresponding to the index indicating the state of the elevator 3, and the number x of the x-unit corresponding to the new hall call H corresponding to the state of the elevator 3 This is the assigned evaluation value. The group management control device 51 typically generates the current position and moving direction (elevating direction) of the cage 4 as described above, a landing call that is predicted to be generated, a cage call, a predicted destination floor, and a landing call generation. Based on various group management indices such as the expected arrival time to the floor, the unit status index E1 (x, H) is calculated.

  In Equation (1), “E2 (x)” is a storage amount index corresponding to an index representing the remaining storage amount of the battery 53, and is a storage amount evaluation value calculated from the remaining storage amount of the No. x machine. The group management control device 51 sets the storage amount evaluation value E2 (x) based on, for example, the storage amount evaluation value map (or a mathematical model corresponding thereto) m1 illustrated in FIG. In the storage amount evaluation value map m1, the horizontal axis indicates the remaining storage amount, and the vertical axis indicates the storage amount evaluation value E2. The storage amount evaluation value map m1 describes the relationship between the remaining storage amount and the storage amount evaluation value E2. The storage amount evaluation value map m1 is stored in the storage unit of the group management control device 51 after the relationship between the remaining storage amount and the storage amount evaluation value E2 is set in advance based on experiments or the like. Here, in the storage amount evaluation value map m1, the relationship between the remaining storage amount and the storage amount evaluation value E2 is defined by a quadratic curve as shown by the solid line L1. In this electricity storage amount evaluation value map m1, the electricity storage amount evaluation value E2 increases with a decrease in the remaining electricity storage amount, and is set to be infinite at a preset last run reference electricity storage amount ThA. Here, the last-run reference storage amount ThA is the minimum storage amount necessary to properly complete the lifting and lowering of a predetermined lifting process without the car 4 unintentionally stopping on the intermediate floor of each floor. (In other words, it corresponds to the minimum amount of power that enables last run). Note that the relationship between the remaining power storage amount and the power storage amount evaluation value E2 may be defined by a plurality of straight lines as indicated by a one-dot chain line L2, for example. The group management control device 51 calculates the storage amount evaluation value E2 (x) of each unit from the storage amount evaluation value map m1 based on the remaining storage amount of the battery 53 of each unit. Thereby, the group management control device 51 decreases the stored power amount evaluation value E2 (x) as the remaining power storage amount of the battery 53 is relatively larger, and the stored power amount evaluation value as the remaining power storage amount of the battery 53 is relatively smaller. E2 (x) can be increased. In addition, the power storage amount evaluation value map may change the curvature, inclination, etc. according to the usage status, demand, etc. between the units, and give superiority or inferiority between the units in the power storage amount evaluation value E2. .

  In Equation (1), “α1” is a weighting coefficient that determines the weighting of the relevant unit state index E1 (x, H) with respect to the evaluation value Ex (H). “Α2” is a weighting coefficient that determines the weight of the remaining charged amount of the battery 53 with respect to the evaluation value Ex (H), that is, the charged amount evaluation value E2 (x). The weighting factor α1 and the weighting factor α2 may be set as appropriate based on, for example, experiments. During normal operation, the group management control device 51 calculates the evaluation value Ex (H) of each elevator 3 as α1 = 1 and α2 = 0 in the equation (1). On the other hand, the group management control device 51 sets the weighting coefficient α1 and the weighting coefficient α2 arbitrarily in the range of α1> 0 and α2> 0 in the formula (1) during the continuous operation at the time of power failure, and evaluates each elevator 3. The value Ex (H) is calculated.

  Therefore, the group management control device 51 calculates the evaluation value Ex (H) of each elevator 3 based on the formula (1) during the continuous operation at the time of a power failure, so that the remaining charged amount of the battery 53 is relatively large. The evaluation value Ex (H) of the elevator 3 that is operated with the power of the battery 53 can be made relatively small, and the evaluation value can be easily selected as a response machine for the hall call. On the other hand, during continuous operation during a power failure, the group management control device 51 relatively increases the evaluation value Ex (H) of the elevator 3 that is operated with the power of the battery 53 as the remaining power storage amount of the battery 53 is relatively small. It is possible to increase the evaluation value so that it is difficult to be selected as a response machine for the hall call.

  Next, an example of control by the control device 50 will be described with reference to the flowchart of FIG.

  First, each power supply control device 54 of the control device 50 determines whether or not the power supply 60 is in a power failure based on the operating state of the power supply 60 (step ST1).

  When each power source control unit 54 determines that the power source 60 for power is not in a power failure, that is, the power source 60 for power is healthy (step ST1: No), The normal operation is performed with the electric power from 60 (step ST2), the current control cycle is terminated, and the next control cycle is started. In this case, each unit control device 52 continues the normal operation as it is when the normal operation was originally performed. At this time, the group management control device 51 calculates the evaluation value Ex (H) of each elevator 3 for the generated call as α1 = 1 and α2 = 0 in Formula (1) as normal evaluation value calculation. The response basket 4 is determined.

  When each power source control device 54 determines that the power source 60 for power is in a power failure in step ST1 (step ST1: Yes), each single-unit control device 52 of the control device 50 is in the event of a power failure due to the power from the battery 53. Continuous operation is performed (step ST3). In this case, if the single control device 52 originally performed continuous operation during a power failure, the single control device 52 continues the continuous operation during a power failure as it is.

  Next, the group management control device 51 of the control device 50 performs the weighting coefficient within the range of α1> 0 and α2> 0 in the formula (2) as the evaluation value calculation at the time of continuous operation during a power failure based on the remaining power storage amount. α1 and weighting coefficient α2 are arbitrarily set, and the evaluation value Ex (H) of each elevator 3 is switched to the generated call (step ST4).

  Next, each power supply control device 54 determines whether or not the power supply 60 for power has recovered from the power failure based on the operating state of the power supply 60 for power (step ST5).

  When it is determined by the power supply control device 54 that the power supply 60 has been recovered from the power failure (step ST5: Yes), the group management control device 51 performs the evaluation value calculation from the evaluation value calculation based on the remaining power storage amount. Returning to the evaluation value calculation (step ST6), the process shifts to step ST2 to return to normal operation.

  When each single control device 52 determines in step ST5 that the power supply 60 has not recovered from the power failure by the power control device 54 (step ST5: No), the process proceeds to step ST3. Continue continuous operation. During this time, when the battery 53 reaches the limit of discharge (typically less than or equal to the last-run reference storage amount ThA), each unit control device 52 puts the car 4 of the relevant machine on the destination floor and then puts it into a stopped state. deep.

  The elevator system 1 configured as described above can continue to raise and lower each car 4 by performing continuous operation during power failure using the power of each battery 53 during power failure of the power source 60 for power. At this time, the elevator system 1 can suppress the power consumption and raise and lower each cage 4 in the continuous operation at the time of power failure as compared with the case of normal operation. Can continue. As a result, since the elevator system 1 can raise and lower each car 4 by continuous operation during a power failure for a longer time, for example, even when the power source 60 for power is out of power, more people in the building can Each elevator 3 can be used.

  And the elevator system 1 allocates the elevator 3 which responds to a new hall call based on the remaining electrical storage amount of the battery 53 of each elevator 3 at the time of continuous operation at the time of a power failure. As a result, the elevator system 1 makes it easy to select the elevator 3 having a relatively large amount of remaining power stored in the battery 53 as a response machine for the hall call, and the elevator 3 having a relatively small remaining power storage amount assigns responses to the corresponding car. Can be suppressed and it can be made difficult to be selected as the answering machine for the hall call. As a result, the elevator system 1 can suppress variations in the remaining power storage amount of the battery 53 among the elevators 3 belonging to the group management. For example, the remaining power storage amount of the battery 53 of the specific elevator 3 can be reduced early. It is possible to suppress the exhaustion. Thereby, the elevator system 1 can make the time which can be operated by all the units at the time of a continuous operation at the time of a power failure relatively long, and can suppress the increase in the occurrence frequency of long waiting, for example. Therefore, the elevator system 1 can optimize the operation by effectively utilizing the power of the battery 53 of each elevator 3 belonging to the group management even when the power source 60 for power is out of power. Many people in the building where 1 is installed can be used efficiently.

  The elevator system 1 described above includes a plurality of elevators 3 and a control device 50. The plurality of elevators 3 can be operated by the power from the power source 60 for power and the power from the battery 53 provided in each. When the elevator 3 is operated using the power of the battery 53 at the time of a power failure of the power source 60 and the landing is called from the landing 8 of the plurality of elevators 3, the control device 50 stores the remaining power of each battery 53. Based on the quantity, it is possible to execute control for allocating the elevator 3 that responds to the hall call from the plurality of elevators 3. Therefore, the elevator system 1 suppresses the variation in the remaining power storage amount of the battery 53 among the elevators 3 belonging to the group management even during the power failure of the power source 60, and makes the power of the battery 53 effective. It can be used for optimizing operation.

  In addition, the elevator system which concerns on embodiment mentioned above is not limited to embodiment mentioned above, A various change is possible in the range described in the claim.

  The group management control device 51 described above performs the evaluation value Ex (H (H) of each elevator 3 based on the state of the plurality of elevators 3 when performing the evaluation value calculation during continuous operation during a power failure based on the remaining power storage amount. ), The weight of the remaining charged amount of each battery 53, that is, the charged amount evaluation value E2 (x), may be variable. That is, the group management control device 51 may make the weighting coefficient α2 variable based on the states of the plurality of elevators 3.

  For example, as the state of the plurality of elevators 3, the group management control device 51 weights the remaining storage amount of each battery 53 with respect to the evaluation value Ex (H) of each elevator 3 as the degree of congestion of the plurality of elevators 3 is relatively low. Is relatively increased, and as the degree of congestion is relatively higher, the weight of the remaining power storage amount of each battery 53 with respect to the evaluation value Ex (H) of each elevator 3 is relatively decreased. That is, the group management control device 51 relatively increases the weighting factor α2 as the congestion level of the plurality of elevators 3 is relatively low, and relatively decreases the weighting factor α2 as the congestion level is relatively high. Here, the group management control device 51 can estimate the degree of congestion of the plurality of elevators 3 based on, for example, the in-car load detected by the load detector 11. For example, the group management control device 51 estimates that the congestion degree of the plurality of elevators 3 is relatively higher as the total in-car load of each unit is larger, and the smaller the total in-car load is, the more the It is estimated that the degree of congestion is relatively low. In this case, as shown in the modification of FIG. 4, the group management control device 51 performs a process to set the weighting coefficient α2 based on the congestion degree of the plurality of elevators 3 before the process of step ST4. (Step ST4a).

  In this case, when the congestion degree of the plurality of elevators 3 is relatively high, the elevator system 1 may relatively reduce the influence of the remaining storage amount of the battery 53 in the evaluation calculation of the response basket 4 with respect to the hall call. it can. On the other hand, when the degree of congestion of the plurality of elevators 3 is relatively low, the elevator system 1 can relatively increase the influence of the remaining power storage amount of the battery 53 in the evaluation calculation of the response basket 4 with respect to the hall call. . As a result, the elevator system 1 waits with emphasis on transportation efficiency and the like even when the power supply 60 is out of power when the elevator 3 is congested according to the state of the plurality of elevators 3. It can be operated reasonably so that the time can be shortened as much as possible and the congestion can be eliminated early. On the other hand, according to the state of the plurality of elevators 3, the elevator system 1 emphasizes the suppression of variation in the remaining power storage amount of the battery 53 even when the power of the power source 60 is interrupted when the elevator 3 is quiet, The time that can be operated by all units can be made relatively long. Therefore, the elevator system 1 can switch between an operation focusing on the remaining power storage amount of the battery 53 and an operation focusing on other elements according to the state of the plurality of elevators 3. The group management control device 51 estimates the degree of congestion of the plurality of elevators 3 based on, for example, images of the cameras 14 set in the landings 8 without being limited to the in-car loads detected by the load detector 11. You may do it. In addition, the group management control device 51 learns in advance a crowded time zone and the like, and based on the time zone, the remaining charge amount of each battery 53 with respect to the evaluation value Ex (H) of each elevator 3, that is, the charge amount The weighting coefficient α2 for setting the weighting of the evaluation value E2 (x) may be variable.

  According to the elevator system according to the embodiment and the modification described above, it is possible to optimize the operation by effectively utilizing the power of the power storage device even during a power failure of the power source for power.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are also included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 1 Elevator system 2 Elevator group 3 Elevator 4 Basket 5 Counter weight 6 Main rope 7 Hoisting machine 8 Platform 9 Basket call registration device 10 Basket guide device 11 Load detector 12 Platform call registration device 13 Platform guide device 14 Camera 50 Control device 51 Group management control device 52 Single control device 53 Battery (power storage device)
54 Power supply control device 60 Power supply for power

The elevator system according to the embodiment includes a plurality of elevators and a control device. The plurality of elevators can be operated by electric power from a power source for power and electric power from a power storage device provided in each. The control device, when the elevator is operated using the power of the power storage device at the time of a power failure of the power source, and when a landing call is made from the landing of the plurality of elevators, the remaining power storage amount of each power storage device From the plurality of elevators, it is possible to execute control for assigning an optimal elevator that responds to the hall call. The control device is operated in accordance with the state of the elevator and the remaining power storage amount of the power storage device in a state where the elevator is operated using the power of the power storage device at the time of a power failure of the power source. An optimal elevator that responds to the hall call is selected from the plurality of elevators based on the evaluation value of the elevator. The control device sets the evaluation value such that the elevator operated by the power of the power storage device is relatively easily selected as the remaining power storage amount of the power storage device is relatively large. The control device sets the evaluation value such that the elevator operated by the power of the power storage device is relatively difficult to select as the remaining power storage amount of the power storage device is relatively small.

Claims (4)

A plurality of elevators operable by electric power from a power source for power and electric power from a power storage device provided for each;
In the state where the elevator is operated using the power of the power storage device at the time of a power failure of the power source, when a landing call is made from the landing of the plurality of elevators, based on the remaining power storage amount of each power storage device, A control device capable of executing control for assigning an elevator responding to the hall call from the plurality of elevators,
Elevator system. The control device selects an elevator that responds to the hall call from the plurality of elevators based on an evaluation value of each of the elevators calculated according to the state of the elevator and the remaining power storage amount of the power storage device. And
As the remaining power storage amount of the power storage device is relatively large, the evaluation value is such that the elevator operated by the power of the power storage device is relatively easy to select,
As the remaining power storage amount of the power storage device is relatively small, the elevator operated with the power of the power storage device is set as an evaluation value that is relatively difficult to select.
The elevator system according to claim 1. The control device, based on the state of the plurality of elevators, makes the weighting of the remaining power storage amount of the power storage device to the evaluation value variable,
The elevator system according to claim 2. The control device relatively increases the weight of the remaining power storage amount of the power storage device relative to the evaluation value as the congestion degree of the plurality of elevators is relatively low,
Relatively small weighting of the remaining power storage amount of the power storage device with respect to the evaluation value as the degree of congestion is relatively high,
The elevator system according to claim 3.

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