JP2003276961A - Elevator group management system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an elevator group management system capable of achieving transportation efficiency to the maximum extent, preventing a person from being left unloaded, and corresponding to landing place destination story registration. <P>SOLUTION: A group management device in which a plurality of elevators for providing service to a plurality of story floors are provided selects the optimum elevator car per landing place call and allocates a landing place call. It is provided with a destination story call device as a landing place call and a getting-off detection device for detecting getting-off of a passenger at each story floor. It is further provided with a means for measuring the number of getting off persons, a means for learning a passenger arrival rate for learning an arrival rate of passengers for each destination story, an operation prediction means of a car, and a means for estimating the number of riding-on passengers depending on destination story. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator group management system operated by a destination floor button installed at a hall.

[0002]

2. Description of the Related Art An ordinary elevator registers a landing call with an ascending or descending button installed at a landing, calls an elevator car according to the landing call, and when a car arrives, passengers board the car and enter the car. When the car call is registered by pressing the floor button (car call) that the user wants to go to, the elevator car responds to the car call and finishes the series of services.

Recently, an operation panel having a destination floor button has been installed at the hall to directly register the destination floor call at the hall so that an efficient elevator operation can be realized.

That is, as shown in FIG. 2, a destination floor call device 3 is provided in which the first elevator 1 and the second elevator 2 are common, and, for example, any of the buttons corresponding to the second to 13th floors is used by the passenger. Is operated to register the floor to which one wants to go, and the service floor of each elevator car is displayed on the destination floor display 5.

In such a device, when an arbitrary destination floor button is pressed, as shown in FIG. 3, this hall call call is first registered, and at the same time the destination floor button pressed by the call assigning device 4 is called. Calls are accordingly assigned to the optimal elevator cars. Various methods have already been proposed for this allocation method. However, if the calls are shared by each car, the number of stoppages while each car goes around can be reduced, so that transportation efficiency is improved by that amount, for example. be able to.

[0006]

However, in the group management elevator utilizing the hall destination floor registration as described above, it is extremely difficult to perform a process for appropriately controlling the number of passengers on board. That is, if the number of destination floors assigned to one elevator car is too small, the number of elevator cars that can be boarded decreases, and the average waiting time for passengers increases. On the other hand, if the number of destination floors is too large, there is a high possibility that leftovers will occur. In addition, there is no convenient method for giving priority to the passengers who are left unloaded, and there is a problem that it is impossible to know how long the passengers will be kept waiting.

The present invention has been made in view of the above points, and by estimating the number of passengers on each floor, it is possible to suppress the leftover of cargo and shorten the waiting time as much as possible. It is an object of the present invention to provide a group management elevator system capable of maximally exhibiting the above.

[0008]

DISCLOSURE OF THE INVENTION The present invention is directed to a group management system in which a plurality of elevators servicing a plurality of floors are provided side by side, and an optimal elevator car is selected for each hall call to assign the hall call. A destination floor calling device is provided as a call, and an alighting detection device for detecting passengers getting off at each floor is provided.The group management device has means for measuring the number of alighted passengers and passenger arrivals for learning the arrival rate of passengers at each destination floor. A rate learning means, a car operation prediction means, and a passenger floor estimation means for each destination floor are provided.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention predicts the number of passengers with high accuracy based on the number of passengers getting off at each floor in each time zone.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 is a functional block diagram showing an embodiment of the present invention, FIG. 4 is a flow chart showing the overall operation of the present invention, and FIG. 5 is a flow chart showing the operation of learning the number N of getting off passengers according to the present invention. 6 is a flowchart showing an operation for learning the passenger arrival rate λ according to the present invention, FIG. 7 is a view showing a learning situation of the passenger arrival rate λ, FIG. 8 is a table showing an example of a learning result of the passenger arrival rate λ, FIG. 9 is a flowchart showing the operation of predicting the number of passengers for each destination floor according to the present invention, and FIG. 10 is a view showing the situation of predicting the number of passengers. In this embodiment, for the sake of simplicity, the case where the destination floor call device is installed only on the lobby floor and the ascending and descending buttons are provided as usual on the general floor will be described.

In the figure, the same reference numerals as those in FIGS. 2 and 3 indicate the same elements, but 3 and 3'denotes a destination floor call registration device common to each elevator car in the hall, and as is well known, a destination floor button. Is provided. Numerals 11 and 12 are disembarking detection devices such as photoelectric devices provided in the elevator cars 1 and 2, respectively, and detect a passenger descending on an arbitrary floor to obtain a signal 1
1a and 12a are output. Reference numerals 21 and 22 are control devices for the elevator cars 1 and 2.

In practice, the photoelectric device also detects the number of passengers on board at the same time, but since there are very few passengers on the floors other than the lobby floor at the time of UP peak, there is no problem in using it as a device for detecting the number of passengers getting off. It is also possible to correct the value of the number of people to be measured based on the landing call registration status on the general floor.

Reference numeral 30 denotes a group management device according to the present invention, each of which will be described later, an allocation unit 31, an operation prediction unit 32, an alighting passenger number measuring unit 33, a passenger arrival rate learning unit 34, and a passenger number estimating unit 35. And a communication means 36.

The assigning means 31 is a destination floor call registration device 3,
When the destination floor button 3'is operated, the optimum elevator car is assigned to the call depending on the situation at that time, as will be described later. The operation predicting means 32 predicts the time from when the destination floor is registered in the lobby floor to when the elevator car assigned the destination floor by the assigning means 31 arrives at the lobby floor and once starts to close after the door opens. . The getting-off passenger counting means 33 uses the signal 11 from the getting-off detecting devices 11 and 12.
The number N of passengers getting off at any floor is measured by a and 12a. The passenger arrival rate learning means 34 uses each time zone f and each time zone z.
At the ratio of the output signal N [f] [z] of the getting-off passenger counting means 33 to the length Tz of each time zone, that is, the arrival rate λ of passengers to each destination floor in each time zone, that is, λ [f] [ z] = N
Calculate [f] [z] / Tz. Then, for example, a table as shown in FIG. 8 is created. Although FIG. 8 shows an example of the table for one day, it is also possible to create it using a moving average for a plurality of days, and it is possible to create and use a table that is actually matched.

The passenger number estimating means 35 is a time zone z to which the destination floor call registration times t ₀ and t _o to the f floor belong, the lobby floor door closing start predicted time t ₁ and the output signal λ of the passenger arrival rate learning means 34. Based on [f] [z], the number of passengers P [f] = 1 + λ [f] [z] * (t _1-
Estimate t ₀ ). (1 has already occurred, so 1 has been added)

Next, a series of schematic operations according to the present invention will be described with reference to FIG. First, in step 1, it is checked whether or not a new destination floor call is newly registered. If there is a call, then in step 2, it is checked whether or not it is during the UP peak time, and in step 3, it is checked whether it is a destination call on the lobby floor. If YES in either case, the number of passengers when each elevator car leaves the lobby floor next time is estimated by the method described later, and this is performed for each elevator car.
At this time, it is checked in step 4 whether the estimated number of passengers is less than or equal to α% of the seating capacity, and if it exceeds α, processing for excluding it from allocation is performed. Then, in step 5, it is finally checked whether or not an elevator car that is an allocation candidate exists, and if there is no elevator car, all elevator cars are selected for allocation.
Then, the destination floor call assignment processing with extremely high transportation efficiency is performed in consideration of the estimated number of passengers on each floor.

The passenger number estimating means according to the present invention will be described below with reference to FIGS. 7 to 9. First, the passenger arrival rate λ is learned, for example, at the time of UP peak. That is, when the elevator car that has left the lobby floor travels in the ascending direction and then stops in step 10 of FIG. 5, the alighting detection devices 11 and 12 and the alighting vehicle number measuring means 33 are provided.
Measure the number of people getting off at the f floor by adding to N [f] [z]. Lobby floor in time zone z → passenger arrival rate λ on floor f
Is calculated by the following equation, where T _z is the length of the time zone z. λ [f] [z] = N [f] [z] / T _z

FIG. 8 shows the passenger arrival rate λ [f] [z].
As shown in, data is sequentially accumulated as a table for each time zone. Then, next, based on the data accumulated in the passenger arrival rate learning table, an estimation process of the number of passengers on each floor is performed as shown in FIGS. 9 and 10. That is, starting from the second floor with the lobby floor as the first floor, in step 21, it is checked whether or not there is a destination floor call assigned to the second floor, and if there is a call, the destination floor call registration time is t _0.
As a result, P [f] = 1 + λ [f] [z] * (t ₁ −t ₀ ) is obtained as an estimation of the number of passengers up to the lobby floor estimated arrival time t ₁ , and this is estimated for each floor. If there is no call for the assigned destination floor, P [f] = 0.

Here, MAXFL means the top floor, and 2
The above calculation is performed from the floor to the top floor, and the allocation by the allocation means 31 is extremely appropriately performed on the basis of the estimated number of passengers thus obtained.

In the above description, the case where the destination floor button is provided only on the lobby floor has been described, but it goes without saying that the present invention may be applied by providing the destination floor button on all floors. Further, although the number of people getting off the vehicle is detected only by the count number of the photoelectric device, it is also possible to improve the detection accuracy of the number of people getting off by making a correction based on another hall call. Also, another device such as an image recognition device may be used.

[0021]

As described above, according to the present invention, it is possible to accurately supplement the number of passengers for each destination floor. Therefore, it is possible to develop a group management system for elevators using a landing destination floor calling device very effectively. it can.

[Brief description of drawings]

FIG. 1 is a functional block diagram showing an embodiment of the present invention.

FIG. 2 is a front view of an elevator hall with a destination floor button.

FIG. 3 is a block circuit diagram of a main part of FIG.

FIG. 4 is a flowchart showing the overall schematic operation of the present invention.

FIG. 5 is a flowchart showing an operation of learning the number N of getting off passengers according to the present invention.

FIG. 6 is a flowchart showing an operation of learning a passenger arrival rate λ according to the present invention.

FIG. 7 is a diagram showing a learning situation of a passenger arrival rate λ according to the present invention.

FIG. 8 is a table showing an example of a result of learning a passenger arrival rate λ according to the present invention.

FIG. 9 is a flowchart showing the operation of predicting the number of passengers for each destination floor according to the present invention.

FIG. 10 is a diagram showing a forecasted number of passengers according to the present invention.

[Explanation of symbols]

1,2 elevator car 3,3 'Destination floor call registration device 30 group management device 31 allocation means 32 Operation prediction means 33 Measures for the number of people getting off 34 Passenger Arrival Rate Learning Means 35 Means of estimating the number of passengers

Claims (6)

[Claims] 1. A group management device, which is provided with a plurality of elevators servicing a plurality of floors, selects an optimal elevator car for each hall call and assigns the hall call, wherein a destination floor call device is used as the hall call. It is provided with an alighting detection device for detecting the getting-off of passengers on each floor, and the group management device has a means for measuring the number of alighted passengers, a passenger arrival rate learning means for learning the arrival rate of passengers to each destination floor, and a car An elevator group management system comprising: an operation predicting means and a means for estimating the number of passengers for each destination floor. 2. The elevator group management system according to claim 1, wherein the destination floor calling device is installed on a lobby floor. 3. The elevator group management system according to claim 1, wherein the getting-off detection device is a photoelectric device provided in an elevator car. 4. The elevator group management system according to claim 1, wherein the alighting detection device is an image recognition device or the like. 5. The elevator according to claim 1, wherein the passenger number estimating means estimates the passenger arrival rate learning means based on an output signal from the getting-off passenger number measuring means. Group management system. 6. The elevator group management system according to claim 5, wherein the number of passengers for each destination floor of the elevator is estimated at the time of UP peak.