JPS6054225B2 - Elevator suspension management device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for managing the suspension of a plurality of elevators installed in parallel.

Conventionally, in buildings where multiple elevator cars are installed side by side, group management has been performed with emphasis on service to customers waiting at the hall.

One of them is the allocation method. This predicts the service status (e.g. waiting time) for each hall call,
The evaluation value for the service condition (for example, the sum of predicted waiting times for hall calls) is calculated, and the hall call is assigned to the car with the minimum evaluation value for the service condition (hereinafter referred to as service evaluation value). This is a system in which only the car receives the hall call. However, in recent years, there has been a growing trend in society to save energy, and there has been a desire for group-controlled elevators that meet the two demands of providing enhanced service to passengers waiting at the hall and saving power consumption.
Conventionally, when traffic conditions in a building are extremely quiet, such as at night, a car that has responded to all car calls and assigned landing calls (hereinafter referred to as an available car) is returned for a predetermined period of time (e.g. (3 minutes) If no call is received to respond, the motor-generator (hereinafter referred to as MG) will automatically stop operating, the lights and position indicator inside the car will be turned off,
We are trying to save electricity by turning off electric fans, etc.

In addition, if it is necessary to suspend operation during the day for the purpose of saving electricity, staff will turn off the operation switch of a specific elevator car, prevent new hall calls from being assigned in the future, and use the elevator as soon as possible. I placed it in the cart and immediately suspended it.
This is manually operated by the staff, which is time-consuming, and the operation switch is turned off at the discretion of the staff, regardless of the actual status of service to passengers waiting at the boarding area. service may become extremely poor. Therefore, recently, the service status of the entire building (for example, the number of long-term boarding calls) is monitored, the number of cars that should be suspended is specified according to the service status, and the specified number of cars are suspended. It has been proposed that power-saving operation be implemented.

In the above, if the number of cars that have already stopped MG does not reach the specified number of idle cars, the number 1. The required number of cars is selected in a preset order, such as Car No. 1, Car No. 2, etc., and no new hall calls will be assigned to the selected cars from now on. but,
If the selected car is waiting for many car calls or assigned hall calls, it takes a long time to stop the car, which has the disadvantage of reducing the power saving effect. This invention improves the above-mentioned drawbacks, and is an elevator suspension management device that can increase the power saving effect by appropriately selecting the cars to be suspended when the number of cars to be suspended is specified. The purpose is to provide

An embodiment of the present invention will be described below with reference to FIGS. 1 to 4. For convenience of explanation, a case will be shown in which four cars are installed in a six-story building, but it goes without saying that the present invention can be applied to any number of cars. In FIG. 1, 1 is a car control device that controls cars a to d (not shown) so that the cars respond to car calls and assigned hall calls; 2 is a hall call registration device that registers hall calls; and 3 4 is a group management device that manages a plurality of cars; 4 is an allocation storage device that is provided in the group management device 3 and stores the hall calls assigned to each car a to d for each car; A hall call selection device 6 selects one hall call that has not been assigned to a hall call; A idle car number setting device 7 sets the number of cars to be idle according to the number of idle cars and outputs a idle car number designation signal 6m. If the number of idle cars is less than the specified number of cars, a new car to be idle is selected, and a new car is created for the idle car. Assignment prohibition signal 7 for each car a-d so that the ratio is not done
A dormant car selection device 8 outputs signals a to 7d, and 8 is also an allocatable car (the car whose allocation prohibition signals 7a to 7d are RO.j is allocatable, and the car whose RlJ is allocatable).

), select the car that is expected to be able to respond the fastest to the hall call selected by the hall call selection device 5,
This is an allocation device that allocates a car to the selected hall call. In FIG. 2, reference numeral 9 denotes a idle car selection order setting device, which outputs selection order evaluation value signals 9a to 9d corresponding to the predicted value of the time until each car becomes an available car and automatically stops (selection order The car whose evaluation signals 9a to 9d have smaller values is preferentially selected as the car to be stopped.

). 10 is a minimum value selection circuit in which the input signal at point T is Rlj
Ga corresponding to each car a-Vd only when .
- From the basket whose input signal at point α is ROJ,
■Select one car that has the minimum input signal at points a-1d, which corresponds to each car a to d, respectively. )
Select with .

), selection signals 10a to 10d are output from points Pa to Pd corresponding to each car a to d, respectively. Selection signal 10a~
In 10d, only the signal corresponding to the car having the minimum value is RlJ, and the other signals are ROJ. Furthermore, if the input signals at points Ga-Gd are all RlJ, all the selection signals 10a to 10d at points Pa-Pd are also ROJ, and similarly when the input signal at point T is ROJ, all selection signals 10a to 10d are Becomes ROJ. 11 to 14 reset the memory contents to RlJ when the RlJ signal is input to the S side, and reset the memory contents to ROJ when the r1yo signal is input to the R side even if the input signal on the S side is RL. memory, 15 is RL
16 is a counting circuit that counts the number of input signals that are , and outputs it as a count signal 15m. 16 is a counting circuit that outputs a comparison signal 16m from point Z when the input signal at point x is smaller than the input signal at point Y.
17 is a comparator that outputs a comparison signal 16m as ROJ from point z when the input signal at point x is greater than or equal to the input signal at point Y;
) is a review command generating device consisting of a pulse generator that generates a pulse signal 17m as shown in FIG.

FIG. 4 is an example of a circuit diagram corresponding to car a of the idle car selection order setting device 9, and a similar circuit is required for other cars cmd.

In the figure, 1U to 5U and 6D to 2D are assignment signals that become RlJ when car a is assigned to a hall call in the 1st floor up direction to the 5th floor up direction and the 6th floor down direction to the 2nd floor down direction, respectively, and 1K. ~6K is a car call signal that becomes RlJ when car a has a car call on the 1st to 6th floors, respectively, 22
A constant signal representing the time required from when the basket becomes available until the MG is automatically stopped (usually 18 @), 23
The available car signal becomes RlJ when car a becomes an available car, and 24 is a constant value signal set in consideration of the increase in the number of stops due to newly registered car calls when responding to a hall call. Usually set to 2. 25 is a constant value signal corresponding to the time required for one stop, and is normally set to 10 seconds.

26 and 27 are counting circuits that count the number of input signals that are RlJ and output them as count signals 26a and 27a, respectively; 28 is a timer that counts the time while the RlJ signal is being input to point I; ■When the input signal at point becomes RO, it is reset to 0 seconds.

The output signal 28a of the timer 28 represents the time elapsed since car a became available. 29 and 30 are multipliers,
30a is an output signal of the multiplier 30, which represents the predicted time until car a becomes an available car.

31 and 32 are adders, and 33 subtracts the input signal at point Y from the input signal at point x, and if the subtraction result is zero or a positive value, it is output as is, and if it is a negative value, it is corrected to zero. 33a is the output signal of the subtracter 33,
It represents the remaining time until car a automatically stops the MG. Next, the operation of this embodiment will be explained.

Now, if car a is on the 1st floor and is assigned to a down call on the 6th floor, and car calls on the 3rd and 5th floors are registered, the assignment signal 6D and car call signals 3K and 5K are respectively assigned to r1. Therefore, the count signals 26a and 27a
are 1 and 2, respectively.

Therefore, the predicted time signal 30a until car a becomes available is calculated by multipliers 29, 30 and adder 31 (1x
2+2)XlO=4 fish.

On the other hand, the available car signal 23 of car a is ROJ, so
The elapsed time signal 28a is 0 seconds, therefore, the remaining time signal 33 from when car a becomes available to when it stops.
a becomes 180-0=18' by the subtracter 33.

Therefore, the selection order value signal 9a of the car a is sent to the adder 3.
2, it is calculated as 40+180=22@7. Also,
Assuming that 6 [phases] have already passed since car a is available on the first floor, the elapsed time signal 28a is 6 phases, so the remaining time signal 33a until car a stops is calculated by the subtractor 33. ``180-60=1 addition second.

Of course, since car a does not have an assigned hall call, the count signals 26a and 27a are 0 and 0, respectively.
The predicted time signal 30a until car a becomes available is O seconds. Therefore, the selection/selection ranking evaluation value signal 9a for car a is calculated as 0+120=1208.
Also, assuming that car a has already automatically stopped the MG,
Since the elapsed time signal 28a exceeds 180 seconds, the remaining time signal 33a until stopping becomes 0 seconds.

Of course, since car a is an available car, the predicted time signal 30a until it becomes an available car is 0 seconds as described above. Therefore, the selection order evaluation value signal 9a for car a
is calculated as 0+0=0 seconds. The selection order evaluation value signals 9a to 9d for each of the cars a to d are calculated as described above.

Now, only car a has already automatically stopped the MG, the number of cars to be stopped is specified as 2 by the idle car number setting device 16, and the memory 11 is exactly
It is assumed that the memory contents of ~14 have just been reset to ROJ.

Now, the allocation prohibition signals 7a to 7d all become RO, so the counting circuit 15 outputs the count signal 15m as 0, and the minimum value selection circuit 10 outputs the signal RO to the Ga-α point.
J is input. Also, since x<Y by the comparator 16, the comparison signal 16m becomes RlJ, and the minimum value selection circuit 1
1 is input to the T point of 0. On the other hand, if the idle car selection order setting device 9 calculates the selection order evaluation value signals 9a to 9d of the cars a to d as 0, 50, 200, and 300, respectively, then the minimum value selection circuit 10 calculates
The input signal at point Ga-α selects the smallest car of the selection order evaluation value signals 9a to 9d from among the ROJ cars, that is, the cars a to d, that is, the car a, and the selection signal 10a is r.
It becomes 1. Therefore, the memo 1 river 1 is set to Rlj, the allocation prohibition signal 7a changes from ROj to Rlj, and the count signal 15m changes from 0 to 1. However, since the number of idle cars designation signal 6m has not reached 2 cars yet, comparison signal 51 is reached.
6m remains RL. In the minimum value selection circuit 10, the RlJ signal is newly input to the Ga point, so this time,
The smallest car among the selection order evaluation value signals 9a to 9d, that is, the car b, is selected from among the cars b-d, and the selection signal 10b is selected.
is RlJ. Ru. Therefore, the memory l river 2 is set to RlJ, the allocation prohibition signal 7b becomes RlJ, and since there are two count signals 15m, the comparison signal 16m by the comparator 16 becomes ROJ for the first time. Minimum value selection circuit 1
0, the input signal at point T becomes ROJ3, so from then on, the new minimum value will be set until the number of cars indicated by the idle car number designation signal 6m increases or the memories 11 to 14 are reset by the pulse signal 17m. Carts with this value will not be selected. In this way, when the number of cars to be suspended is specified, the car will be selected to be idled for the specified number of cars in order from the car with the minimum predicted time until the car automatically stops the MG. Since the allocation of new hall calls is prohibited, the car can be stopped in a short period of time, and the power saving effect can be increased. In addition, pulse signal 1
7m, the designation of cars that should be paused is reset periodically, and at that point, the cars that should be paused are reselected in the order of cars that are likely to stop automatically sooner, so the car status and , even if there is a large change in the situation at the landing, the change can be fully followed, and the power saving effect can be increased at any time.

In the above embodiment, the idle car selection order setting device 9 uses the selection order evaluation value signals 9a to 9d as predicted values of the time required for each car to automatically stop the MG, , the predicted time 30a until the car becomes available for use is calculated from the scheduled number of stops and the time required for the stop, and the fixed time 22 from when the car becomes available until the MG is automatically stopped. The predicted values 9a to 9d are calculated by adding them.

In addition, for a car that has already become a usable car, the time that has passed since it became an available car is counted, and the remaining time 33a until the MG is automatically stopped is calculated based on the predicted value 9a~ 9d is being calculated. However, the predicted value 9
The method for determining a to 9d is not limited to this. for example,
Using a known arrival time calculating device that calculates the expected time until the car arrives at each floor, the predicted time 30a until the car becomes available for use may be determined as follows. That is,
(7) A predicted value of the so-called one-round time until the car departs from the car position floor and arrives at the car position floor again in the same direction as the first time.

(a) Estimated arrival time of the car to the floor of the final car call.

(C) For cars with assigned hall calls,
The expected arrival time to the terminal floor, assuming that the floor of the car call that will occur when the farthest car call is answered is the terminal floor.

In addition, simply the number of calls each car a to d handles or the predicted time 30a until it becomes an available car.
may be used as selection ranking evaluation values 9a to 9d. In addition, in the above embodiment, the service floors of each car a to d are all the same, but depending on the building, the service floor may be the basement floor, the roof floor, or the service floor.
It is also conceivable that the service floor may be different depending on the car, such as dividing or changing the service floor depending on the time period.

In such a case, it is desirable to preferentially select a car that will have as little negative impact on passenger service as possible. Taking this into consideration, a fixed value corresponding to the number of service floors for each car may be added to the selection ranking evaluation values 9a to 9d, and these values may be reused as the selection ranking evaluation values 9a to 9d. It can be easily achieved. In addition, in consideration of the ease of use for elevator users, a certain value is set for the selection ranking evaluation value of the center car so that the car at the end of the elevator bank is selected as a dormant car with priority over the car in the center. It is also possible to easily add the values and use it as the selection ranking evaluation value. Further, although the above embodiment was applied to an elevator using MG, it goes without saying that the invention can be similarly applied to a thyristor Leonard type elevator.

Further, in the above embodiment, the allocation prohibition signals 7a to 7d are issued to the car selected as the car to be suspended so that no new allocation is made to the car. It goes without saying that the present invention can be applied even to a method that cancels only unforeseen allocations.

It goes without saying that the present invention can also be applied to a method of responding to hall calls for cars passing by, instead of the allocation method, and instead of the assignment prohibition signals 7a to 7d, hall calls are ignored for cars that should be stopped. What is necessary is to output a signal that Further, in the above embodiment, the device 6 that monitors the service status of the entire building and automatically sets the number of cars to be suspended is provided in the group control device 3, but it is not necessarily necessary to provide it in the group control device 3. Needless to say, the present invention can also be applied to the case where the number of cars to be suspended is specified by a switch or a building management computer.

Furthermore, in the above embodiment, the selection of the car to be suspended is periodically reviewed by the command generating device 7, but the present invention is not limited to this.

For example, it is easily possible to review the selection of cars to be suspended based on the following predetermined conditions. (d) When the number of cars increases or decreases based on the 6m idle car number designation signal.

(4) When a car becomes out of control due to a malfunction, or conversely returns to control.

(Power) When changing the service floor.

(g) When traffic conditions change.

As explained above, in this invention, when selecting a dormant car from a plurality of cars, a selection ranking evaluation value indicating the order in which the car is expected to become dormant quickly is obtained, and a predetermined number of cars are selected in order from the lowest evaluation value. As a result, the car can be stopped in a short period of time, and the power saving effect can be enhanced.

In addition, we have made it possible to cancel the selection of baskets that should be paused based on predetermined conditions and reselect them, so that even if the situation changes, we can fully follow it and increase the power saving effect at any time. .

[Brief explanation of the drawing]

1 to 4 are circuit diagrams showing one embodiment of the elevator suspension management device according to the present invention, FIG. 1 is a block diagram showing the overall configuration, and FIG. 2 is the suspension car selection device of FIG. 1. FIG. 3 is a diagram showing the waveform of a pulse signal of the review command generator shown in FIG. 2, and FIG. 4 is a logic circuit diagram of the pause selection order setting device shown in FIG. 1... Car control device, 2... Hall call registration device, 3... Group management device, 4...
Allocation storage device, 5... Hall call selection device, 6...
... Dormant car number setting device, 6m... Dormant car number designation signal, 7... Dormant car selection device,
7a to 7d... Allocation prohibition signal for cars a to d, 8
...... Assignment device, 9... Dormant car selection/selection order setting device, 9a to 9d... Cart a to d selection order evaluation value signal, 10... ...Minimum value selection circuit.

Claims (1)

[Scope of Claims] 1. A method for selecting a predetermined number of cars from among a plurality of cars, and suspending the above-mentioned cars when this car finishes responding to a call; A selection ranking setting device that outputs selection ranking evaluation values indicating expected rankings, and a suspension car selection device that selects the predetermined number of cars to be suspended in order from the one with the smallest selection ranking evaluation value. Features: Elevator suspension management device. 2. The elevator suspension management device according to claim 1, which uses the number of calls to which a car is scheduled to respond as the selection ranking evaluation value. 3 Claim 1 in which the predicted time required for a car to complete a response to a scheduled call is used as a selection ranking evaluation value
Elevator outage management device described in Section 1. 4. The elevator suspension management device according to claim 1, which uses the predicted time required until the car stops as the selection ranking evaluation value. 5 In a system in which a predetermined number of cars are selected from among a plurality of cars, and the above-mentioned cars are put into rest when this car finishes responding to a call, the order in which the above-mentioned plurality of cars are expected to be put into a resting state is shown. a selection ranking setting device that outputs selection ranking values, a suspension car selection device that selects the predetermined number of cars to be suspended in order from the one with the smallest selection ranking evaluation value, and a suspension car selection device that selects the cars to be suspended at a predetermined time. An elevator suspension management device characterized by comprising a review command generating device that issues a review command to cancel the selection once and make the selection again. 6. The elevator suspension management device according to claim 5, which issues a review command periodically.