JPS6234672B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a device for group management of elevators.

In group control elevators that use an assignment system in which when a hall call is registered, a car is assigned to it and responds to the hall call, the car that has responded to all hall calls and car calls is left to wait on the floor with its door closed. , waiting for a new landing call to be assigned. Such a basket is called an available basket.

On floors with a high traffic volume, such as the first floor, which is the entrance floor of a building, the doors may be left open for a certain period of time even after passengers have exited the vehicle, in preparation for incoming passengers. In addition, if one car has its door open and another car is waiting for the door to be closed, and the car whose door is open has been boarded and departed, the door will be closed even if the landing call for that floor is not registered. The waiting cars may be opened at any time to prepare for the next arrival of passengers. If no one gets on board after a certain period of time, the door will be closed again and the vehicle will be put on standby, or as soon as passengers have boarded and alighted on the 1st floor as well as on other floors, the door will be closed and the vehicle will be put on standby, and one vehicle will depart. The doors remain closed and on standby until the landing call for that floor is registered.

However, keeping the door open for a certain period of time even after passengers have exited the vehicle means that when there is relatively little traffic on the first floor and there is a lot of traffic on other floors, services on floors other than the first floor may be delayed. In addition, opening the door of the waiting floor even though the landing call has not been registered will result in unnecessary door opening unless there are always subsequent passengers, which will reduce service on other floors and reduce equipment wear and tear and reduce power consumption. I also don't like it. In addition, if the door is closed and the car waits when boarding is completed, the car waiting on the first floor will be immediately assigned to a call on another floor, and when there are many passengers coming up from the first floor, such as when going to work, the service on this floor will be interrupted. It may get worse.

This invention is intended to improve the above-mentioned problems, and is an elevator that prevents cars waiting to close their doors from needlessly opening their doors, or from degrading the service on the waiting floor by being assigned to a call from another floor. The purpose is to provide a group management device for this purpose.

An embodiment of the present invention will be described below with reference to the drawings.

In the diagram, 1 indicates "H" when the basket becomes available.
2 is the off-peak signal which becomes "H" when traffic is slow, 3 is the 1st floor car position signal which becomes "H" when the car is on the 1st floor, and 4 is the signal when other cars are on the 1st floor. The departure signal on the 1st floor becomes "H" when departing.
5 is the hall up call signal which becomes "H" when the hall up call is registered on the 1st floor, 6 to 9 are AND gates (○ mark indicates the inversion of the signal), and 9a is the output of AND gate 9. A door opening command signal for commanding the opening of the car door; 10 is a timer whose output becomes "H" after a certain period of time when the input becomes "H"; 11 is an OR gate;
Reference numeral 11a is the output thereof, which is an assigned car signal for this car and is inputted to a well-known assignment circuit. Then, when the assigned car signal 11a becomes "H", this car can be assigned to a hall call.

Next, the operation of this embodiment will be explained.

When the car reaches the first floor, car position signal 3 becomes "H"
becomes. When the passenger completes getting off the car and closes the door, the available car signal 1 becomes "H".
Now, AND gate 6 is closed and the output of AND gate 7 becomes "H". The timer 10 starts counting the time limit, and after a certain period of time, its output becomes "H", and the output of the OR gate 11, that is, the assigned car signal 11a becomes "H". This car is now an available car that can be assigned to a hall call at any time. In other words, even if a hall call is registered on another floor within the above-mentioned certain period of time, this car will be prevented from being assigned to that hall call.
You will have to wait to register for a landing call on the waiting floor.

Next, after the basket becomes available on the first floor,
When the first floor up-hall call is registered, the hall up-call signal 5 becomes "H". Now, the output of the AND gate 9, that is, the door opening command signal 9a is "H"
, and the door of this basket opens immediately. (When the door is opened, the car is no longer usable, so it cannot be assigned to the call at the other end.) Then, it serves customers from the first floor. When the car becomes available on a floor other than the first floor, the available car signal 1 becomes "H" and the first floor car position signal 3 becomes "L". Therefore, the output of AND gate 6 becomes "H" and OR
The output 11a of the gate 11 becomes "H", and the car becomes available for immediate assignment to a hall call. Furthermore, when the traffic is quiet, the quiet time signal 2 becomes "H". At this time, if the car is on the first floor and becomes an available car, both the available car signal 1 and the 1st floor car position signal 3 become "H".
Since the output of the AND gate 7 is also "H", the output of the AND gate 8 is also "H", and the output of the OR gate 11 is also "H", and this car becomes a car that can be immediately allocated. Further, when there is a car departing from the first floor, the first floor departure signal 4 becomes "H" and the timer 10 is immediately reset. Therefore, counting of the waiting time for available cars is restarted. That is, since this available car is prevented from being assigned to a hall call on another floor and departing, the deterioration in service on the first floor is eliminated.

In the example, the waiting floor was explained as the first floor, but
It can be carried out not only on floors but also on floors with heavy traffic.

Further, the circuit can be configured as either a relay circuit or an integrated circuit, and it can also be implemented by a program in an allocation calculation circuit using an electronic computer.

As explained above, in this invention, when a car is waiting on a waiting floor with the door closed, even if a landing call is registered on a floor other than the waiting floor, the waiting car will not be moved to the landing until a certain period of time has elapsed. For the waiting floor landing calls,
By opening the door immediately, priority can be given to the service on the waiting floor. Since the waiting floor is normally selected from a crowded floor such as the departure floor, priority service can improve the service of the building as a whole.

[Brief explanation of the drawing]

The figure shows a logic circuit showing an embodiment of an elevator group management device according to the present invention. 1...Available car signal, 3...1st floor car position signal, 7...AND gate, 10...Timer,
11...OR gate, 11a...Assigned car signal.

Claims (1)

[Scope of Claims] 1. In a device in which when a hall call is registered, a car is assigned to the car and is made to respond to the hall call, and a car that has completed responding to all hall calls and car calls is placed on standby with the door closed on the floor. (a) A detection circuit that detects that the response completed car is waiting on a predetermined specific waiting floor; (b) A timing operation is started based on the detection operation output of this detection circuit, and a predetermined time period is elapsed. (c) an assignment blocking circuit that prevents the waiting car from being assigned to a hall call registered on a floor other than the waiting floor until the time limit circuit is activated; (d) If a hall call occurs on the specific floor while the detection circuit is detecting the waiting car, it will detect it and generate a signal to immediately open the door of the waiting car without waiting for the predetermined time. An elevator group control device equipped with a door open signal generation circuit.