JP2000289942A - Elevator control system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an economical elevator that realizes a short waiting time and a small car capacity. SOLUTION: This elevator control system has destination floor registration buttons 7 arranged in all landings to enable destination floor registration from the landings, destination floor registering means 13 for registering, upon an operation of the destination floor registration buttons 7, a destination floor call including a departure floor and a destination floor, and service call selecting means 15 for selecting, after every elevator service, as the next service call one or more car calls supposed to be met as a whole within a preset time from the registered destination floor calls. Each service call precludes all the other destination floor calls.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator control apparatus, and an object of the present invention is to provide a small and economical elevator with a short waiting time by using a destination floor registration button installed at a landing.

[0002]

2. Description of the Related Art A general elevator registers a hall call by using a UP or DOWN direction call button installed at the hall, and calls the car by the hall call.
Then, when the car arrives, the passenger gets in, presses a destination button in the car, registers a car call, and the car finishes a series of services in response to the car call.

[0003] If there are a plurality of calls, the vehicle is generally operated by a selective collective system (a fully-automatic sharing system), which is a so-called SELECORE operation system. This cerecole system responds to hall calls and car calls in the same direction while driving in one direction, automatically reverses the driving direction if there is no call ahead, and then drives in response to calls in that direction Then, when there are no more calls to be answered, there is a waiting state there (or at a specific floor).

[0004]

The traffic volume per elevator is λ (unit: 1 person / sec.
= 1 person / 20 seconds of traffic), the passenger arrival interval is represented by 1 / λ. On the other hand, if RTT is the average round trip time of the elevator and r is the average number of passengers in one direction, the service time per person E (s) is E (s)
= RTT / 2r, and the service time per person E
If (s) is greater than 1 / λ, ie, the passenger arrival interval, the number of waiting passengers increases with time. When the number of waiting passengers becomes larger than the capacity of the car, unloading occurs, and the number of waiting passengers rapidly increases.

In order to prevent this unloading, the service time per person E (s) should be made smaller than 1 / λ, so that RTT should be made as small as possible or r should be made as large as possible. . When r is increased, the RTT increases accordingly, but since the number of floors in the building is fixed, when the RTT increases to a certain value, the RTT hardly changes even if r increases. On the other hand, since r can be increased up to the capacity, the service time per person can be reduced by increasing r as much as possible. In the Celecore system, r is made as large as possible by responding to all calls in the same direction, so that unloading can be prevented even if the traffic volume is quite large.

However, this method has a problem in that r increases as the traffic volume increases, so that the RTT also increases to almost the maximum value, and the waiting time for passengers increases accordingly.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and an object thereof is to provide a short RT.
An object of the present invention is to provide an elevator control device that satisfies the equilibrium condition at T, can reduce the waiting time, and can reduce the capacity of the car, that is, an economical elevator.

[0008]

According to the first aspect of the present invention, a destination floor registration button for registering a destination floor at a landing is provided at each landing, and when the destination floor registration button is operated. Destination floor call registration means for registering the departure floor and the destination floor as the destination floor call, and each time the elevator service is completed, the total service completion time of the registered destination floor calls falls within a predetermined time. By providing service call selecting means for selecting at least one destination floor call as the next service call, the number of passengers on the car is reduced and the RTT is shortened.

According to the second aspect of the present invention, a destination floor registration button capable of registering a destination floor at a landing is provided at each landing, and when the destination floor registration button is operated, the destination floor is called as a destination floor call. Destination floor call registration means for registering a floor and a destination floor, and a service call selection for selecting a predetermined number of destination floor calls among the registered destination floor calls as the next service call each time the elevator service is completed. With the provision of the means, the number of passengers on the car is reduced and the RTT is shortened in the same manner as in the first aspect of the present invention.

According to the third aspect of the present invention, when selecting the next service call, priority is given to a destination floor call in which at least one of the departure floor and the destination floor coincides irrespective of the call direction. The number of times the car stops can be reduced as much as possible.

According to the present invention, when the next service call is selected, the call including the departure floor closest to the current position of the car is preferentially selected so that efficient operation can be performed. It was done.

According to the fifth aspect of the invention, when the next service call is selected, the call registered first is preferentially selected, so that the waiting time for a specific call becomes extremely long. This is to prevent it.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an overall configuration diagram showing one embodiment of the present invention, in which 1 is a commercial power supply, 2 is a speed control device for controlling the speed of a car according to an operation control command 10a, and 3 is an electric motor for driving an elevator. , 4 is a sheave, 5 is a car, 6 is a car operation panel, 6a is a car call signal, 7 is a destination floor registration button provided at the landing of each floor, 7a is a destination floor call signal, 8 car position detecting device, 8a is Car position signal, 9 counter weights.

Reference numeral 10 denotes a microcomputer as an operation control device for controlling the operation of the elevator. When a destination floor registration button 7 is operated, a destination floor call registration for registering the departure floor and the destination floor as a destination floor call is performed. Means 13, a car call registration means 14 for registering a car call, a service call selection means 15 for selecting a destination floor call to be serviced next time as a service call, an operation for controlling basic operations such as running, stopping, and a driving direction of the car. It has a function as a control means 16, a display device control means 17 for displaying a driving direction, an arrival forecast, and the like, and a door control means 18 for controlling opening and closing of a door. Position signal 8
a, a destination floor call signal 7a, etc., and outputs an operation control command 10a via an output circuit 12.

FIG. 2 is a flow chart showing the procedure of the service call selecting means for selecting, from among unanswered destination floor calls, a destination floor call to be serviced next time as a service call.

First, in step S1, it is determined whether or not the car is free, that is, whether or not the service has been completed for all of the selected service calls. If a service call is being answered, no other destination floor call is answered during that time, and service is performed by sequentially responding only to the service call. When the service is completed and the service becomes free, it is determined in step S2 whether there is any unanswered destination floor call including a new destination floor call generated during that time. If not, the car remains in the standby state, but if there is, the step S
At 3, the service completion time is sequentially calculated for each destination floor call and a combination thereof, and a destination floor call or a combination of destination floor calls that can complete the service within a predetermined time is selected among them.

Next, in step S4, it is determined whether or not any of the selected combinations of the destination floor calls have the same departure floor or destination floor. If there is, in step S5, the combination of the destination floor call is selected as the next service call. If there are a plurality of combinations, the combination of the destination floor call including the departure floor closest to the car is selected from the next service call. Select as call. If there is no matching departure floor or destination floor, step S
6. Register the call or combination of calls including the departure floor closest to the car as the next service call.

Then, the selected service call is sent to the operation control means 16, and the car is operated to respond only to the service call. In this way, each time the car becomes free, the above procedure is repeated, and the car responds only to the selected service call and does not respond to any other destination floor calls, while repeating all the destination floor calls. Will be provided sequentially.

A specific example of the operation of the car when the above procedure is actually applied will be described based on an example of a call occurrence state shown in FIG.

FIG. 3 is a diagram showing an example of the occurrence of destination floor calls when one elevator serves a building with an eight-story floor. In FIG. 3, C is the elevator car,
H1 is registered at the landing on the second floor.
The unanswered destination floor is called with the floor as the destination floor. Similarly, H2 is 4
An unanswered destination floor call with the floor as the departure floor and the 8th floor as the destination floor, H3 is an unanswered destination floor with the 5th floor as the departure floor, and 3rd floor as the destination floor, and H4 is a 7th floor as the departure floor. An unanswered destination floor call with the floor as the destination floor.

In the situation of FIG. 3, assume that the car C has completed the service on the first floor and has become free, and FIG.
In step S1, the process proceeds from step S1 to S2, and further to S3.
The service completion time is calculated for each of the destination floor calls H1 to H4 and for each combination, and a combination of the destination floor calls that can complete the service within a predetermined time is selected among them. Assuming that the service is completed within a predetermined time for two combinations of these four destination floor calls, and that three or more combinations exceed the predetermined time, six combinations are selected.

Next, in step S4, it is determined whether or not there is a combination of the selected calls having the same departure floor or destination floor. As a result, two combinations of H1 and H3 and a combination of H2 and H4 are selected. Then, in step S5, the combination of H1 and H3 including the departure floor closest to the car is selected, and is selected as the next service call.

As a result, the car first responds to the destination floor call H1, loads passengers on the second floor, which is the departure floor, and descends on the fifth floor, and at the same time, loads passengers with the destination floor call H3 on the fifth floor.
Drive to the floor. During this time, other destination floor calls H2, H4
And does not respond to any newly generated destination floor calls.

At the time when the third floor becomes free, if the new destination floor call has occurred during this time, the above procedure is repeated including the new one, and the next service call is determined. If no new call has occurred, the above procedure is repeated for the remaining destination floor calls H2 and H4,
This call combination is now selected as the next service call.

Accordingly, this time, from the third floor, first, the destination floor call H
In response to 4, the passenger goes to the departure floor, the seventh floor, and puts down the passengers on the fourth floor, and at the same time drives the destination floor call H2 on the fourth floor to drive to the destination floor, the eighth floor.

As described above, in the situation shown in FIG. 3, the conventional cereco-collection method requires eight stops for the destination floor calls H1 to H4, but the present invention requires six stops as described above. Service for all calls can be completed, reducing the RTT and reducing the number of passengers per call.

In the present invention, a car call is not necessarily required because the destination floor can be registered at the landing. In the above embodiment, the description of the car call is omitted. In the case of controlling the service call, the service may be performed in response to both the selected service call and the car call.

Further, in the above embodiment, the service completion time is within a predetermined time as a condition of the next service call, but the present invention is not limited to this, and a predetermined number of destination floor calls (for example, 2), and a priority order may be provided for calls having the same departure floor or destination floor.

Further, when there are a plurality of calls or combinations of calls that satisfy the conditions, the above embodiment gives priority to the call including the departure floor closest to the car. To prevent this, the call registered first may be preferentially selected.

Further, in the above embodiment, the case where one elevator is used is described. However, if the selected service calls are sequentially assigned to the free cars, a group management of two or more cars can be performed. The present invention can also be applied to

[0031]

According to the present invention, a call having the same departure floor or destination floor can be preferentially serviced irrespective of the direction of the call, so that the number of stops can be reduced. Therefore, since the equilibrium condition is satisfied with a short RTT, the waiting time can be reduced. In addition, the number of passengers in one driving is reduced, so that the capacity of the car can be reduced, so that it is economical and the congestion degree of the car is reduced to provide a comfortable environment.

[Brief description of the drawings]

FIG. 1 is a diagram showing an overall configuration of the present invention.

FIG. 2 is a flowchart showing a procedure of a service call selecting means in the present invention.

FIG. 3 is a diagram for explaining the present invention, showing an example of a destination floor call occurrence situation and a car response order;

[Explanation of symbols]

 5 Car 6 Car operation panel 7 Destination floor registration button 10 Operation control device 11 Input circuit 12 Output circuit 13 Destination floor call registration means 14 Car call registration means 15 Service call selection means 16 Operation control means 17 Display control means 18 Door control means

Claims (5)

[Claims] In an elevator for sequentially servicing a plurality of floors in response to a registered call, a destination floor registration button capable of registering a destination floor at a landing is provided at each landing. When the button is operated, destination floor call registration means for registering the departure floor and the destination floor as a destination floor call, and each time the elevator service is completed, the total service completion time of the registered destination floor calls A service call selecting means for selecting, as a next service call, at least one destination floor call which falls within a predetermined time. 2. An elevator which services a plurality of floors sequentially in response to a registered call, wherein a destination floor registration button for registering a destination floor at a landing is provided at each landing. A destination floor call registration means for registering the departure floor and the destination floor as a destination floor call when the button is operated, and a predetermined number of the destination floor calls among the registered destination floor calls each time the elevator service is completed. A service call selecting means for selecting a call as a next service call. 3. The elevator group management according to claim 1, wherein when a next service call is selected, a service call in which at least one of the departure floor and the destination floor matches is preferentially selected. apparatus. 4. The elevator control according to claim 1, wherein when selecting the next service call, the destination floor call including the departure floor closest to the current position of the car is preferentially selected. apparatus. 5. The elevator control apparatus according to claim 1, wherein when a next service call is selected, a call registered first among the destination floor calls is preferentially selected. .