JPS6150874B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in an elevator departure control device that causes a plurality of elevators arranged in parallel to depart from a lower or upper reference floor in order of arrival.

In recent years, in order to rationally operate a large number of elevators according to traffic conditions within a building, a group management system has been increasingly adopted in which each elevator is operated as a group.

In this type of group management, when an elevator car descends and reaches the lower reference floor, or ascends and reaches the upper reference floor, it is sequentially moved to the preceding car (for the lower reference floor, it is placed next to the upper reference floor). The car is designated as the car scheduled to depart on the upper standard floor, or the car scheduled to depart next on the upper reference floor, and is made to wait until a departure command is issued.

On the other hand, at the standard floor, the first car is generally set according to the departure time interval after the preceding car departs, or the spatial interval when the preceding car reaches the scheduled floor, in order to make the intervals between the cars as even as possible. Depart after receiving departure orders.

For this reason, (1) If the number of cars waiting on the standard floor increases too much,
Since the waiting car cannot service hall calls until it receives the departure command, the number of elevators that can respond to all hall calls is equivalently reduced, resulting in a decrease in elevator utilization.

(2) Since the departure time interval at the standard floor is constant regardless of the occurrence of hall calls, if there are few hall calls, the elevator will be in a so-called sluggish operation, resulting in wasteful operation. In addition, when there are many calls to the hall, the elevator does not arrive at the hall floor for a long time, causing a feeling of frustration among the customers waiting in the hall.

(3) Due to the relationship between the occurrence of hall calls and the departure time interval on the standard floor, it is easy to cause a disparity between the service on the standard floor and the service on intermediate floors, resulting in a decline in overall service.

There was a problem.

The present invention has been made in view of the above-mentioned problems, and the number of waiting cars on the standard floor is more than a certain number,
In addition, if the demand for hall calls exceeds a certain number, the interval between departure commands issued to the first car at the standard floor is made shorter than the normal interval, so that the number of cars is always kept in line with the number of hall calls. It is an object of the present invention to provide an improved elevator departure control device for operating a car and improving service.

The present invention will be explained below with reference to the drawings. 1 to 4 are circuit diagrams showing an example of the configuration of the present invention. The figure shows a case where the number of floors to be stopped is 10, the number of elevators is 4, and departure interval control is performed only on the lower reference floor (first floor).

Figure 1 shows the standard floor waiting car number detection device.
In the figure, HF is a relay contact for each elevator car (units 1 to 4) that closes when each elevator car is waiting on the standard floor, and GHF is the relay contact that is activated by the detection device 1 when the number of waiting cars on the standard floor exceeds the set number. This is a relay for detecting the number of waiting cars that is energized. Figure 2 shows a hall call number detection device, and 2F to 10F in the figure are relay contacts that close while the ascending call buttons for the 2nd to 10th floors are pressed and hall calls are registered;
MHC is a hall call number detection relay that is energized by the operation of the detection device 2 when the number of hall calls exceeds a set number. FIG. 3 is a circuit diagram showing the configuration of the detection devices 1 and 2 used in FIGS. When the input is added and the value exceeds the set value in the comparator, a switching operation is performed and the output transistor 5
This turns ON the relay GHF or MHC.
is energized. Figure 4 shows a departure command circuit at the standard floor. The departure relay GUD, which gives the departure command, is operated at the time set by the time relay YT, which is shorter than the normal departure command time interval that can be set by the time relay XT.

In the figure, BGUD-b is the normally closed contact of the departure detection relay, which is energized once when the first car leaves the standard floor, and then de-energized immediately. XT and YT are the time relays for setting the departure time interval, and the voltage is As a result, time begins to be counted and after the set time, the built-in relay is energized and contact XT-a or YT-a is closed, respectively. Next, its operation will be explained. Now, the number of waiting cars on the standard floor is set to 3, and the number of hall call number detecting devices 2 is set to 4, so there are currently two cars waiting on the standard floor, and the next one is descending. Assuming that the cars arrive at the standard floor and wait, first the waiting car number detection relay GHF is activated. During that time, for example, 6 hall calls occur, and 5 hall calls are registered in the relay.
By energizing F-10F, hall call number detection relay MHC is energized, which in turn energizes departure interval shortening relay XGUD. Contact BGUD
-b is CFFed after the previous starting car departs, so voltage is applied to time relays XT and YT and each timer is counting the time.
In normal times when XGUD is not activated, the departure relay GUD at the standard floor is activated after the set time of the time relay XT, but when the XGUD relay is activated, the GUD is activated.
Since time relay YT is energized after the set time, which is shorter than XT, the first car will depart from the lower standard floor at shorter time intervals than in normal cases. 1
When the starting car departs, there are two waiting cars on the lower standard floor, and the relay GHF relay falls, so that the relay depart.

In FIG. 2, if 2F to 10F are used as long-waiting call detection relays that turn on after a certain period of time, for example, 20 seconds, after a call is generated, a backup effect for long-waiting calls can be obtained. Furthermore, this method can be carried out on the standard floor and both the upper and lower standard floors, and furthermore, it is also possible to issue departure commands at several time intervals depending on the combination of the hall call occurrence situation and the number of waiting cars on the standard floor.

As explained above, according to the present invention, in elevator departure control in which a plurality of elevator cars are sequentially departed from a reference floor, by adjusting the departure interval according to the number of waiting cars and the number of calls waiting in the hall, the overall An elevator departure control device with high serviceability can be obtained.

[Brief explanation of the drawing]

1 to 4 are circuit diagrams showing an example of the configuration of the present invention. 1, 2...Detection device, 3...Adder, 4...Comparator, 5...Transistor, GHF...Relay for detecting the number of waiting cars, MHC...Relay for detecting the number of hall calls, GUD...Departure relay, GUDX ...Departure interval shortening relay, XT, YT...Time relay,
BGUD...Departure detection relay.

Claims (1)

[Claims] 1. In an elevator departure control device that causes multiple elevators installed in parallel to depart from a reference floor one after another at a predetermined departure interval, it detects that the number of elevator cars waiting at the reference floor is greater than a set number and sends a signal. A standard floor standby car number detection device to output,
A hall call number detection device that detects that the number of hall calls from floors other than the standard floor is greater than a set number and outputs a signal, and outputs of the standard floor waiting car detection device and the hall call number detection device. An elevator departure control device comprising a departure command circuit that shortens a predetermined departure interval from a reference floor by a signal.