JP5955664B2 - Elevator group management system - Google Patents

Description

  The present invention relates to an elevator group management system.

  The elevator group management system manages multiple elevator cars (usually 3 to 8) as a group, and when a new hall call occurs in a hall, the most suitable car from this group Is selected and a hall call is assigned to the car.

  In the current group management system, in a time zone when the elevator is congested, a method of reducing the waiting time in the hall by allocating a car to a hall set in advance is common. This dispatching method is not controlled from the transport capacity according to the actual congestion level of the hall, and is not a method of accurately dispatching the car. As a solution to this problem, for example, as shown in Patent Document 1, a hall camera that detects congestion in an elevator hall and a car, and a means for measuring the area occupied by the hall and the car by a camera in the car And there is an elevator controller that dispatches cars to the hall based on past learning results. According to this, an appropriate number of cars can be dispatched to a crowded floor.

JP 2002-302348 A

  However, Patent Document 1 does not consider an operation method for reducing the power consumption of an elevator. A widely used elevator has a structure in which a main rope is wound around a sheave, a car is attached to one end of the main rope, a counterweight is attached to the other end, and the sheave is rotated by a motor to raise and lower the car. This type of elevator has the lowest power consumption when it is operated with a balance between the car and the counterweight, that is, half the weight of the rated load (hereinafter sometimes referred to as “half road”). However, in Patent Document 1, for example, even when there is only one passenger in the hall, an empty 20-seater car may be dispatched. Therefore, the operation control for suppressing the power consumption of an elevator is not made.

  In addition, when the amount of power allocated to the elevator is determined in a power saving plan, etc., the amount of power to operate the elevator cannot be secured (for example, when there is only one passenger or there are many passengers waiting in the hall, When the car is fully loaded, the elevator cannot be serviced (cannot be driven).

  The present invention has been made to solve such problems, and an object of the present invention is to provide an elevator that can contribute to a reduction in power consumption of the elevator by allocating an appropriate car in accordance with the congestion degree of the hall. To provide a group management system.

  In order to solve the above-described object, in the elevator group management system according to the present invention, a plurality of elevators each including a car, a motor for driving the car, and a load sensor for detecting a load in the car, A hall call device disposed in the hall, a congestion degree detection device that calculates the congestion degree of the hall, and a group management control device that performs group management of operations of the plurality of elevators, the group management control device includes: Based on the congestion degree of the hall calculated by the congestion degree detection device and the actual measurement values detected by the load sensors, a car with low power consumption of the motor is changed to a hall where the hall call device is operated. I am trying to get a car.

  According to the present invention, a car with low power consumption can be allocated to a target hall according to the degree of congestion of the hall. Therefore, it can contribute to the reduction of the power consumption of an elevator. Problems, configurations, and effects other than those described above will be clarified by the following description of the embodiments.

1 is a block diagram showing an overall configuration of an elevator group management system according to a first embodiment of the present invention and a configuration of its peripheral portion. It is a lineblock diagram of the hall side of the elevator group management system concerning the 1st example of an embodiment of the present invention. It is a figure which shows the mechanical structure of the elevator used in the 1st Example of this invention. It is a flowchart which shows the procedure of the control process of the elevator by the elevator group management control apparatus shown in FIG. It is a flowchart which shows the procedure of the control process of the elevator by the elevator group management control apparatus shown in FIG. It is a block diagram which shows the whole structure of the elevator group management system which concerns on the 2nd Example of this invention, and the structure of the peripheral part. It is a block diagram by the side of the hall | hole of the elevator group management system which concerns on the 2nd Example of this invention. It is a flowchart which shows the procedure of the control process of the elevator by the elevator group management control apparatus shown in FIG.

  Hereinafter, embodiments of the present invention will be described. FIG. 1 is an overall configuration diagram of an elevator group management system according to a first embodiment of the present invention. In FIG. 1, reference numeral 1 is a building where an elevator is installed, reference numeral 2 is an electric power company, reference numeral 3 is an elevator group management control device (for each elevator group), reference numeral 31 is a power saving signal detection unit, reference numeral 32 is a control operation control unit, reference numeral 33 is a group management control unit, 331 is a hall congestion monitoring unit, 332 is a car load data monitoring unit, 333 is an elevator power consumption calculation unit, and 4 is a device that detects the congestion level of a hall ( For each elevator group), 5A, 5B and 5C are elevator control devices (for each elevator), 6A, 6B and 6C are passenger cars having the same rated load capacity, and 7A, 7B and 7C are congestion degrees in the passenger cars. Reference numerals 8A, 8B, and 8C are load sensors for detecting the load on the car.

  The elevator group management control device 3 is attached to the elevator control devices 5A, 5B, and 5C for controlling the elevator operation of the elevator car. The power saving signal from the building 1 or the electric power company 2 where the elevator is installed and the congestion of the hall And the degree of congestion of the car are detected, and control is performed so that the car having the lowest power consumption of the elevator is allocated according to the degree of congestion. Furthermore, the elevator group management control device 3 has an announcement function that guides passengers to get on and off.

  More specifically, the elevator group management control device 3 converts the congestion level of passengers waiting in the hall into area data occupied by the passengers in the hall congestion level detection device 4, and the group management control unit 33 monitors the congestion level of the hall. Into the unit 331. In the normal operation mode, the car having the shortest waiting time is identified, and the car is dispatched to the hall where the call was made. On the other hand, in the power saving operation mode, the car that minimizes the power consumption of the elevator is specified, and the car is dispatched to the hall where the call was made. Details of the control method will be described later.

  In response to a command from the control operation control unit 32, the group management control unit 33 performs either an operation that minimizes the waiting time (normal operation mode) or an operation that minimizes power consumption (power saving operation mode). Control to do.

  FIG. 2 is an example of a configuration diagram of the hall side of the elevator group management system according to the first embodiment. In FIG. 2, reference numeral 4 is a congestion degree detection device for detecting the congestion degree of passengers waiting in the hall, reference numeral 4A is a detection range of the congestion degree detection device 4, reference numerals 9A, 9B, and 9C are provided for each elevator. Indicator lights that display operating conditions (for example, maintenance operation mode, seismic control operation mode, power saving operation mode, etc.), reference signs 10A, 10B, and 10C are indication lights that notify passenger reservation and arrival, and reference signs 11A and 11B are halls. Call button (hall call device).

  The elevator group management control device 3 according to the present embodiment detects the congestion degree of the hall with the area occupied by the passengers by the congestion degree detection device 4 and detects the car from the detection results of the in-car congestion degree sensors 7A, 7B, 7C. If there is not enough space for passengers waiting for the hall, a car that can secure that area will be allocated. In other words, the passenger who registers the hall call is secured a space for getting on the car.

  The congestion degree detection device 4 for detecting the congestion degree of a hall has a function of discriminating a passenger's exclusive area when the hall call buttons 11A and 11B are registered, a hall exclusive area increased after call registration, and a hall call button. The terminal floor where it is not necessary to install 11A and 11B has a function of registering a hall call with information detected by the congestion level detection device 4 of the hall.

  The elevator control devices 5A, 5B, and 5C have a function of changing the rated speed of the elevator according to a command from the elevator group management control device 3.

  FIG. 3 is a diagram illustrating a mechanical configuration of an elevator that is group-managed. In this embodiment, as shown in FIG. 1, three elevators are managed as a group, but since all elevators have the same mechanical configuration (the same motor capacity), one of them will be described below. The configuration will be described by taking as an example. In FIG. 3, reference numeral 6A denotes an elevator car, reference numeral 8A denotes a load sensor, reference numeral 15A denotes a motor, reference numeral 16A denotes a sheave directly connected to the shaft of the motor 15A, reference numeral 17A denotes a brake, reference numeral 18A denotes a counterweight, and reference numeral 19A denotes a ride. A main rope 21A, which connects the car 6A and the counterweight 18A, is a liquid crystal monitor provided in the car 6A.

In the elevator shown in FIG. 3, by driving the motor 15A, the sheave 16A rotates and the car 6A moves up and down. This elevator is most effective when the sum of the weight W ₁ of the car 6A and the load W ₂ of the car 6A is balanced with the weight W ₃ of the counterweight 18A (ie, W ₁ + W ₂ = W ₃ ). Designed to enable operation with reduced power consumption. Therefore, load capacity W ₂ of the car. 6A if operated elevator W ₃ -W ₁ substantially equal state (half load), it comes to power consumption can be suppressed. Thus, in the elevator group management system according to the present embodiment, elevator group management is performed in consideration of the loading capacity of the car. The specific control method will be described in detail below with reference to FIGS. 4 and 5.

  FIG. 4 is a flowchart showing a procedure of elevator control processing by the elevator group management control device 3. As shown in FIG. 4, the elevator group management control device 3 has a power restriction request (amount of power to be saved or what percentage power saving during normal use) to the elevator added to the power saving signal from the building 1 or the power company 2. It is determined whether or not it has been input to the power saving signal detector 31 (step S1). In the case of Yes in step S1, the control operation control unit 32 sets the operation mode to the power saving operation mode (step S2). Thereby, control of the car giving priority to power saving is performed. At this time, the elevator group management control device 3 displays on the indicator lights 9A, 9B, 9C for displaying the operation state of the elevator that the power saving operation mode has been switched, and to that effect, passengers waiting for the hall, and Announce to passengers in the car.

  Next, the elevator group management control device 3 monitors whether or not the hall call buttons 11A and 11B have been pressed (step S3). If the hall call buttons 11A and 11B are pressed (Yes in step S3), the process proceeds to step S4. In step S4, the hall congestion degree monitoring unit 331 converts the congestion degree signal from the congestion degree detection device 4 of the hall where the hall call buttons 11A and 11B are pressed into area data that is occupied by the passengers. A predicted loading amount E of a passenger or a cart waiting in the hall where 11B is pressed is calculated.

Next, in step S5, the actual value M ₁ of the load data of the car 6A input to the load data monitoring unit 332, the actual value M ₂ of the load data of the car 6B, and the actual value of the load data of the car 6C. and M _3, based on the predicted load amount E, the power consumption calculation section 333, the car 6A, 6B, lowest power among the 6C determines the lower car. Specifically, the sum (W ₁ + M ₁ + E) of the weight W ₁ of the car, the actually measured value M ₁ of the load data of each car, and the predicted load E of the car (W ₁ + M ₁ + E), and the sum of W ₁ + M ₂ + E Then, the power consumption calculation unit 333 calculates which of the sums of W ₁ + M ₃ + E is closest to the weight W ₃ of the counterweight 18A.

  In other words, when the passenger waiting in the hall where the hall is called is put on the car, the power consumption calculating unit 333 is 6A to 6C which is the most suitable car that can be driven in the state closest to the half road. Which of the two is calculated. Then, the car that is determined to be optimal as a result of the calculation is determined as the car that is allocated to the hall that requested the hall call (hereinafter, the car 6A will be described as being selected in step S5). Continue).

  Next, in step S6, the elevator group management control device 3 instructs the elevator control device 5A that controls the car 6A to dispatch the car 6A determined in step S5 toward the target hall. Output a signal. Receiving the command signal, the elevator controller 5A dispatches the car 6A to the target hall while driving the car 6A at a low speed. When the car 6A arrives at the hall call floor, the elevator control device 5A opens the car 6A so as to receive a passenger.

  On the other hand, in the case of No in step S1, that is, when the power saving signal is not received, the elevator group management control device 3 sets the normal operation mode. Therefore, in the normal operation mode, control is performed to dispatch the car that arrives at the hall that requested the hall call earliest.

Next, the control after the car is dispatched to the hall where the hall call is requested will be described. FIG. 5 is a flowchart showing a procedure of elevator control processing by the elevator group management control device 3 after the car has been dispatched to the target hall. When the car 6A arrives at the hall where the hall call is requested and is opened, the passenger enters the car 6A, so that the loading capacity in the car 6A increases. Therefore, as shown in FIG. 5, after the car 6A is dispatched to the hall call floor, the load data monitoring unit 332 monitors the load data of the car 6A. Then, the total of the actual load load value M ₄ input from the load sensor 8A and the weight W _{1 of the} car 6A is within a range of ± 20% of the weight W ₃ of the counterweight 18A (W ₃ x0.8 ≦ M ₄ + W ₁ ≦ W ₃ x1.2) (is it a specified value?), The group management control unit 33 determines (step S22).

  In this embodiment, in order to reduce power consumption, a value of ± 20% is set as a threshold value for control, but this threshold value is an example, and it depends on the usage frequency of the elevator or the degree of energy saving request. Can be determined as appropriate.

  In the case of Yes in step S22, the elevator control device 5A receives the instruction from the elevator group management control device 3 so that the passenger does not enter the car 6A any more, and the elevator control device 5A informs the passenger that the capacity has been reached. Announcement (voice and message is displayed on the liquid crystal monitor 21A), and the car 6A is closed (step S23). Next, the elevator controller 5 announces to the passengers in the car 6A that the speed is low because it is in the power saving operation mode (step S24), and drives the car 6A toward the destination floor at a low speed. Control is performed (step S25). By doing so, even when the number of passengers waiting in the hall increases just before the car 6A is dispatched to the target hall, it is possible to operate the elevator with reduced power consumption.

On the other hand, in the case of No in step S22, it is still more energy efficient to drive with the passenger on the car 6A. Therefore, upon receiving a command from the elevator group management control device 3, the elevator control device 5A The car 6A is made to stand by with the door open (step S26). The elevator control device 5 is in the range sum of ± 20% of the weight _{W 3} of the counter weights 18A of the weight _{W 1} of the cage 6A ride the measured values _{M 4} of the load input from the load sensor 8A _{(W 3} (e.g., x0.8 ≦ M ₄ + W ₁ ≦ W ₃ x1.2), the elevator group management control device 3 makes an announcement for guiding passengers through the elevator control device 5A (step S27). .

  Next, the elevator group management control device 3 determines whether or not a predetermined time has elapsed since the car 6A was dispatched to the target hall in step S28. If the predetermined time has not elapsed (No in step S28), the process returns to step S22 so that passengers can be put on and the vehicle can be operated with power saving as much as possible. On the other hand, when the predetermined time elapses, if the passenger is kept waiting any longer, the usability deteriorates. Therefore, the process proceeds to step S23, and the elevator control device 5A receives the instruction from the elevator group management control device 3, and the elevator control device 5A Control to drive to the next destination floor.

  As described above, according to the elevator group management system according to the first embodiment, the car can be driven near the half road, so that power consumption can be suppressed. Further, after the car is dispatched to the hall where the hall is called, the control is performed so that passengers can be put in only within a range where the power consumption can be reduced, so that the power consumption reduction effect is maintained. Furthermore, since the car is put on standby until the loading capacity of the car reaches a condition suitable for power saving operation, it contributes to reduction of power consumption. In addition, the passenger's dissatisfaction can be resolved by making an announcement that the power saving operation mode is in progress. Furthermore, since the cars are dispatched in consideration of the congestion level of the hall, in the power saving operation mode, the situation where passengers cannot get on even though the cars are dispatched is solved.

  Next, an elevator group management system according to a second embodiment of the present invention will be described, except that the size of the car is different and the method for selecting the optimum car is different accordingly. This is the same as the first embodiment. Therefore, the following description is given only for the above-described differences, and the other components are denoted by the same reference numerals in the drawings, and description thereof is omitted.

  FIG. 6 is an overall configuration diagram of an elevator group management system according to the second embodiment of the present invention. As shown in FIG. 6, in the second embodiment, the rated load capacity of elevator cars 106A, 106B, and 106C that are group-managed is different from large, medium, and small. The car 106A has the largest rated load capacity among the three cars, and the capacity of the motor that drives the car 106A is 40 kW. The car 106C has the smallest rated load among the three cars, and the capacity of the motor that drives the car 106C is 10 kW. The car 106B is a rated load capacity between the car 106A and the car 106C, and the capacity of the motor that drives the car 106B is 20 kW.

  FIG. 7 is an example of a configuration diagram of the hall side of the elevator group management system according to the second embodiment. The configuration shown in FIG. 7 is not different from the configuration shown in FIG. 2 except for the size of each door of the elevator, and the description thereof is omitted here.

  In the second embodiment, the motor capacities differ depending on the size (rated load capacity) of the cars 106A, 106B, 106C. For this reason, in the power saving operation mode, there is a feature in a method for selecting which car to dispatch when there is a hall call. Accordingly, a method for selecting a car to be dispatched will be described below with reference to the flowchart of the elevator control process shown in FIG. In addition, description is abbreviate | omitted about the process of the step which attached | subjected the code | symbol same as FIG. 4 among each step of FIG.

As shown in FIG. 8, in step S 5-1, the elevator group management control device 3 measures the actual load value M ₁ of the load data of the car 6 </ b> A input to the load data monitoring unit 332 and the actual load data of the car 6 </ b> B. Based on the value M ₂ , the actual load value M ₃ of the load data of the car 6C, the predicted load E, and the capacity of each motor, the power consumption calculation unit 333 selects the car 6A, 6B, 6C from It is calculated which car power consumption is the lowest when the car is dispatched, and the car to be dispatched is determined. For example, when there are few passengers in the hall where the hall call is made, that is, when the value of the predicted load capacity E is small, control is performed so that an elevator car having a motor capacity as small as possible is allocated to the target hall. In this way, when elevators with different car sizes are managed in groups, not only control close to driving on half roads, but also when there are few passengers waiting in the hall, Control is performed so as to drive a motor having as small a motor capacity as possible.

  As described above, according to the second embodiment, even when the size of the car is different, the car is driven by driving a motor having a motor capacity suitable for the degree of congestion in the hall. Therefore, a power saving effect can be expected as in the first embodiment. In addition, since a car having a loading capacity corresponding to the degree of congestion in the hall is dispatched, it is possible to provide a car of an optimal size for elevator passengers. Therefore, the effect of shortening the waiting time of the elevator (for example, even if there are many passengers in the hall or when there are waiting passengers pushing the carriage, a small size car is dispatched so that all the waiting passengers cannot get in, and the hall call is made again. Will be registered and will increase waiting time.)

  In addition, embodiment mentioned above is an illustration for description of this invention, and is not the meaning which limits the scope of the present invention only to those embodiment. Those skilled in the art can implement the present invention in various other modes without departing from the gist of the present invention.

3 Elevator group management control device (group management control device)
4 Congestion degree detection device 6A to C Car 8A to C Load sensor 11A, 11B Hall call button (hall call device)
15A to C Motor 16A to C Sheave 18A to C Counterweight 19A to C Main rope 106A Ride car (Large)
106B Car (medium)
106c Ride car (small)
M ₁ ~M ₄ Found E predicted load weight W ₁ cab weight W ₃ counter weights Weight

Claims (1)

A car, a motor for driving the car, and a load sensor for detecting a load in the car, and the car is provided at one end of a main rope wound around a sheave rotated by the motor. A plurality of elevators provided with a counterweight on the other end side of the main rope;
A hall call device located in the hall;
A congestion detection device for calculating the congestion degree of the hall;
An elevator group management system comprising: a group management control device that performs group management of operations of the plurality of elevators;
The plurality of elevators includes a plurality of rides having the same rated load capacity, each of the plurality of rides and a ride having a different rated load capacity,
The group management control device has a normal operation mode for performing normal operation management, and a power saving operation mode for performing operation management with power saving based on an input of an external power restriction request ,
The group management control device includes:
In the normal operation mode, the car that can be quickly dispatched to the hall where the hall call device is operated is preferentially dispatched to the hall,
In the power saving operation mode, the predicted load capacity of each car is calculated from the congestion degree of the hall calculated by the congestion level detection device, and each actual measurement value and the predicted load capacity detected by each load sensor are calculated. And the car whose weight is the closest to the weight of the counterweight is determined from among a plurality of cars having the same or different rated load capacity, and the determined car is prioritized in the hall. Deliver to the hall where the call device is operated while driving at a lower speed than the normal operation mode , and monitor the detection value by the load sensor for the car allocated to the hall, and the load detection values of the sensor and the total value of the weight of the car, until the difference between the weight of the counter weights is within the range of the predetermined, the cab It performs an announcement for inducing boarding passengers so as to stand in the open leave the hole,
When the difference between the detected value of the load sensor and the total weight of the car and the weight of the counter weight falls within the predetermined range, or the car is placed in the hall.
When a predetermined time has elapsed since the vehicle was driven, the car is closed and the vehicle is driven at a lower speed than the normal operation mode toward the destination floor, and the passenger is in the power saving operation mode. An elevator group management system characterized in that it announces that it is operating at low speed .