JPS6158390B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a device for stopping operation of an elevator.

In recent years, there has been a growing trend in society to save energy, and elevators are also required to satisfy the two demands of providing enhanced service to passengers waiting in the hall and saving power consumption.

Conventionally, in order to conserve electricity in elevators, certain elevator cars are put out of service when traffic in the building becomes quiet. Furthermore, in order to reduce the time and effort required by the attendants, certain cars are automatically suspended at predetermined times.

However, if you pause a specific basket every day,
Cars other than this specific car are activated more often or run longer than the above-mentioned specific car, so they are more likely to break down. Furthermore, since the wear of mechanical parts increases, the period until maintenance is shortened, and the frequency of maintenance increases.

This invention is intended to improve the above-mentioned problems, and aims to provide an elevator suspension device that can equalize the operating time of each car and reduce the number of failures and maintenance.

An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. Note that the numbers suffixed with A to C represent the first to third machines, respectively.

In the figure, 1 is the idle car selection circuit, 2A to 2C are "L" when the first to third cars are stopped, respectively.
Running signal that becomes "H" while running, 3A to 3C are counters that count the number of inputs that become "H", 4 is a maximum value selection circuit, which is input only when input T is "H"
Select one car with the maximum input Ia to Ic from among the cars with Ga to Gc set to "L" (if there are multiple cars with the maximum value, A→B→
Select in order C. ) and the corresponding output
Generates Pa~Pc. Outputs Pa to Pc are "H" only for the car corresponding to the maximum value, and "L" for the others. In addition, all inputs Ga to Gc are "H"
Or when it is "L", all outputs Pa~Pc are also "L"
becomes. 5A to 5C are R-S flip-flops (hereinafter referred to as memory) 5aA to 5aC are memories 5A to 5C
When the output of 5C becomes "H", the car responds only to its own car calls, returns to the designated floor and immediately stops, and when it becomes "L", it is commanded to enter normal operation where it can respond to calls. 6 is a counting circuit that counts the number of inputs that are "H", 7 is a counting circuit that counts the number of inputs that are "H", and 7 is a circuit that outputs "H" when input X>input Y, and output "L" when input X and input Y. 8 is a maximum value selector that selects and outputs the maximum value among inputs, 9 is a minimum value selector that selects and outputs the minimum value among inputs, 10 is input X - input Y 11 is a subtracter that outputs a certain number of times (for example, 100
12 is a comparator similar to comparator 7; 13 is a periodic pulse generator that generates a pulse signal 13a at a constant period T (for example, 10 minutes) as shown in FIG. 2; is an AND gate, 15
16 is an OR gate, 16 is a clock that emits a time zone signal when a predetermined time zone comes, and 17 is a clock that, when the time zone signal is input, emits a designated suspension number signal 17a indicating the preset number of idle machines, and the number of idle machines is determined by the number of idle machines. When the pulse signal 17 shown in FIG.
This is a device for setting the number of idle machines that emits the signal b.

Note that the maximum value selection circuit 8, the minimum value selection circuit 9,
Subtraction circuit 10, fixed number of times signal 11 and comparator 12
The output of the maximum value selection circuit 4 is stored in the memories 5A to 5C.
Configure a re-implementation circuit that operates to reset the

Further, the AND gate 14 and the OR gate 15 are operated by the memory 5A to 5 by the signal from the re-execution circuit.
A reset circuit for resetting C is constructed.

Next, the operation of this embodiment will be explained.

Now, at a time when traffic is very slow, the clock 16 and the number of idle vehicles setting device 17 are activated to signal the number of idle vehicles 17.
It is assumed that the number a is set to one, machine No. 3 has received the suspension designation, the suspension designation signals 5aA and 5aB are "L", and the suspension designation signal 5aC is "H".

Up to now, the number of times that the first to third machines have been started has been counted by the counters 3A to 3C as the number of times the running signals 2A to 2C have become "H", respectively.

Currently, the first machine is 500 times, the second machine is 400 times, and the third machine is
Assuming that 340 times are counted, the maximum value selector 8 selects 500 times, and the minimum value selector 9 selects 340 times. Since the subtracter 10 performs 500-340=160 times, the comparator 12 makes 160>100 and its output becomes "H". Here, periodic pulse generator 1
When the pulse signal 13a of 3 is issued, the output of the AND gate 14 becomes "H", and the output of the OR gate 15 becomes "H".
The output also becomes "H", and all memories 5A to 5C are reset. Now, the pause designation signal 5aA
~5aC are all “L”, so counting circuit 6
The output will be in the zero range. Since the suspension designated number signal 17a is one, 1>0 in the comparator 7, and its output becomes "H". The input T of the maximum value selection circuit 4 becomes "H", and the inputs Ga to Gc are all "L"
Therefore, the car with the maximum value of inputs Ia to Ic, that is, car No. 1 with 500 inputs, is selected, the output Pa is "H", and the outputs Pb and Pc are both "L". Therefore, the memory 5A is set, and the suspension designation signal 5aA of the first machine becomes "H". As a result, the output of the counting circuit 6 becomes one, and since 1=1 in the comparator 7, its output becomes "L". Since the input T of the maximum value selection circuit 4 has become "L", the output Pa
~Pc are all set to "L", and the selection of the dormant car is completed. Therefore, in place of machine No. 3, which has been started less often, machine No. 1, which has been started many times, is newly designated as a suspension car and is put to rest. Along with this, the number of times the No. 2 and No. 3 machines are started will gradually increase and approach the number of times that the No. 1 machine will be started.

Furthermore, when the idle designated car number signal 17a specifies 2 cars, the output of the counting circuit 6 is 1 car after car No. 1 is selected as the first car, so the comparator 7 outputs 2> 1, and its output becomes "H". Therefore, this time, the car with the input Ga to Gc of "L", that is, the car No. 2 which has the largest number of activations among the No. 2 and No. 3 cars, is selected.
Output Pb becomes "H". The memory 5B is now set, and the pause designation signal 5aB of the second machine becomes "H". Further, the output of the counting circuit 6 becomes two cars, the output of the comparator 7 becomes "L", and the selection of the idle car is completed.

On the other hand, when the number of machines designated for suspension decreases from 2 to 1 or increases from 0 to 1, the pulse signal 17b becomes "H", so the output of the OR gate 15 becomes "H". , the memories 5A to 5C are all reset, and the selection of the idle specified car is immediately carried out again.

In the embodiment, the idle car is selected based on the number of activations, but it may also be selected based on the running time of the car, or both may be taken into consideration.

In addition, a fixed number of times signal 11 and a pulse signal 13a
is for detecting that the number of starts or the running time has become or is about to become unbalanced between cars, and is 100 times and 10 times, respectively.
It is not limited to minutes. Further, the change may be made taking into consideration the traffic condition of the elevator, the number of years since the building was installed, etc.

Although the suspension number setting device 17 changes the designated number of suspension machines depending on the time, the present invention is not limited to this. For example, the following may be used.

(a) The staff selects and specifies the number of idle machines by operating a switch on the control panel.

(b) Set the number of idle cars to maintain a certain level of service depending on the service status of hall calls (for example, the waiting time at the hall).

Moreover, when the difference between the maximum value and the minimum value of the number of times of activation exceeds a predetermined number of times, the car is reselected as the suspension designated car in order from the largest car, but the conditions for re-selection are not limited to this. For example, you may do as follows.

(a) Simply do it periodically (for example, every 10 minutes).

(b) Calculate the difference between the number of starts or the running time and their average value, and perform this when there is a car whose value is above (or below) a predetermined value.

(c) This is carried out when a car occurs for which the difference between the number of starts or running time and the number of starts or running time of a car designated for suspension is greater than (or less than) a predetermined value.

As explained above, in this invention, the number of times each car is activated or the running time is measured, and the largest car is selected in order and prioritized for stopping, so the operating time of each car is equal. , the number of failures, and the number of maintenance can be reduced.

In addition, when the number of activations or running times of each car becomes unbalanced, or is expected to become unbalanced, the idle car is deselected and re-selected, resulting in a power saving effect. The number of failures and maintenance can be reduced without any damage.

[Brief explanation of the drawing]

FIG. 1 is a block circuit diagram showing an embodiment of an elevator suspension system according to the present invention, and FIG. 2 is a pulse signal waveform diagram of FIG. 1. 1... Pausing car selection circuit, 2A to 2C... Running signals for No. 1 to No. 3 cars, 3A to 3C... Counter,
4... Maximum value selection circuit, 5A to 5C... R-S flip-flop, 5aA to 5aC... Stop designation signal for units 1 to 3. Note that the same parts in the figures are indicated by the same reference numerals.

Claims (1)

[Scope of Claims] 1. A car that automatically selects a car to be stopped and causes the car to stop on a floor, including a counter that measures the number of times each car is activated or the running time of each car, An elevator operation stop device characterized by comprising a stop car selection circuit that selects a car to be stopped preferentially in the order of the car having the highest output of the counter. 2. A counter that measures the number of times each car is activated or the running time of each car, in a device that automatically selects a car that should be stopped and stops this car on the floor, and the output of the above-mentioned counter of the above-mentioned cars. A suspension car selection circuit that selects the car to be suspended preferentially starting from the largest car; a memory circuit that stores the selection signal from this suspension car selection circuit and generates a suspension command signal to the corresponding car; and measurement using the counter described above. A re-execution circuit that operates when the results become unbalanced with each other; when this re-execution circuit operates, it temporarily releases the memory in the memory circuit, activates the idle car selection circuit again, and sends the selection signal to the memory circuit. An elevator operation stop device characterized by being equipped with a memorizing reset circuit. 3. The elevator operation suspension device according to claim 2, wherein the operation of the suspension car selection circuit is activated when it is detected that the difference between the maximum value and the minimum value of the counter becomes equal to or more than a predetermined value.