JPS64554B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic door opening/closing control method and apparatus for changing the door open holding time when closing the automatic door based on the length of the door closed state time of the automatic door.

As is well known, when an automatic door closes the door after an object such as a person has passed, the door does not close immediately even after the object detection switch no longer detects the object, and the door does not close immediately. By setting a door open holding time to keep the door open and closing the door after this door open holding time has elapsed, people and other objects passing through the automatic door can safely and without feeling anxious. Many are used to control the opening and closing of doors to allow people to pass through. However, for example, if one person normally passes through an automatic door, even if such a door-open holding time is not set, by the time the door finishes closing, the person will be far enough away from the door, which may pose a danger to the person passing through. There is no risk of causing anxiety. For this reason, if the door is kept open for a period of time when only a few people pass through the automatic door, outside air will continue to infiltrate through the door that remains open even after people have passed through the door. As a result, there is a possibility that the indoor air-conditioning effect is wasted, and this waste may become enormous, especially during the period when air conditioning is used.

Conventional automatic doors have a fixed opening time, so in any case, the door will remain open for a certain period of time after there is no longer a signal to detect a passerby. Otherwise, the door would not close. For this reason, setting the door open hold time to a long time will result in a waste of air conditioning effect when only a few people pass by, and if the door open hold time is set to a short time, many people will continue to use the air conditioner. When the person in front of the person passes through the door, even if the door is kept open for a short time and the door starts to close, the next person often comes and has to open the door again. In this case, the door that had once started to close starts to open again in front of the passerby, which not only gives a hurried impression to the passerby but also creates a sense of anxiety about passing, thus making it meaningless to set a time period for the door to remain open. Ta. In general, the number of people passing through automatic doors is concentrated during certain hours, and only sparsely during other times, so the conventional automatic doors with a fixed opening time as described above will eventually However, it has the disadvantage that it is impossible to control the opening and closing of the door in a manner suitable for the period of time.

This invention has been made in view of the above circumstances, and includes detecting the door closed state time of an automatic door and setting the door open holding time so that the shorter the door closed state time is, the longer the door closed state time is based on this. Therefore, it is an object of the present invention to provide an automatic door opening/closing control method and device that can prevent waste of air conditioning effect due to setting a door open holding time.

Embodiments of the invention will be described based on the drawings.

As shown in Fig. 1, the automatic door 1 is an electric automatic door that opens and closes two doors 3 by drawing them apart or approaching each other by rotating a capacitor motor 4 that can be rotated forward or backward in response to a signal from an object detection switch 2. Explain using.

The object detection switch 2 detects an object such as a person (hereinafter referred to as
They are called "people" or "passersby." ) are installed on the front and back of the door 3, and photoelectric switches 6 are installed on the left and right sides of the door 3, which turn on the switch when a person steps on the door. , the object detection switch 2 is always turned on when any one of these switches 5, 5, and 6 is turned on.

In the automatic door opening/closing control method of the present invention, each time the object detection switch 2 is turned ON and the door 3 is opened, the door open holding time is increased based on the previous door closed state time, the shorter the door closed state time is. After the object detection switch 2 is turned off, the motor 4 is controlled to close the door 3 after the set door open holding time has elapsed. The door closed state time is the time interval determined from when the number of people passing through the automatic door 1 stops until the next person comes, and is mainly the time when the door 3 is in the closed state. .

The invention of a device used to carry out the automatic door opening/closing control method of the present invention will be explained based on the block diagram shown in FIG. The automatic door opening/closing control device of the present invention includes a clock circuit 8 connected to a door detection switch 7, a door open holding time setting calculation circuit 9, and a drive control circuit 1 connected to an object detection switch 2 and a motor 4.
Consists of 0. The door detection switch 7 detects the two doors 3 when the door 3 is closed as shown in FIG.
This is a micro switch that has a roller at the tip installed below near the seam of This roller serves to send an ON signal to the clock circuit 8 until it returns upward and opens the switch.
The timing circuit 8 is a circuit that measures the time from when the signal sent from the door detection switch 7 turns ON until it returns to OFF, and uses this measured time as data of the door closed state time to keep the door open. It is sent to the time setting calculation circuit 9. Door open holding time setting calculation circuit 9
sets the door open holding time by sending the data of the door closed state time sent from the clock circuit 8 to the drive control circuit 10. Object detection switch 2
is an OR circuit that connects the output signals of the automatic door 1's mat switches 5, 5 and photoelectric switch 6, and when any of these switches 5, 5, 6
When it is in the ON state, an ON signal is sent to the drive control circuit 10, and when a person finishes passing through the automatic door 1 and is no longer detected by any of the switches 5, 5, and 6.
It serves to notify the drive circuit 10 as an OFF signal. The drive control circuit 10 is a circuit that controls the timing at which the motor 4 of the automatic door 1 rotates.When the signal from the object detection switch 2 returns to OFF, the drive control circuit 10 performs a calculation sent from the door open holding time setting calculation circuit 9. The timing for rotating the motor 4 is controlled so that the door open holding time set by the data is measured and the door 3 starts to be closed immediately after the elapse of this time. The calculation process from the door closed state time Tc to the door open state time To in the door open state time setting calculation circuit 9 is as shown in the diagram of FIG. It is done in such a way that it takes a long time. Therefore, the door open holding time To is determined when the door closed state time Tc is zero, that is, at the same time as the door 3 finishes closing, the object detection switch 2 detects a new passerby and turns ON, and the door 3 starts to open again. The longest time is when Further, when the door closed state time Tc becomes longer than a certain level, the door open holding time To becomes zero, and the door 3 starts to close at the same time as the object detection switch 2 returns to OFF.

The opening/closing operation of the door 3 of the automatic door 1 according to the present invention constructed as described above will be explained based on FIGS. 4a and 4b. Figures 4a and 4b are time charts that show the relationship between the ON/OFF switching timing of the object detection switch 2 and the opening/closing operation timing of the door 3 over time; When the state time Tc is long, FIG. 4b shows the case where the door closed state time Tc is short.
Point A (A ₁
Point, A ₂ points and A ₃ points are shown. same as below. ) When the door 3 is also closed, the door detection switch 7 is turned on and the timing circuit 8 starts timing. After the number of people passing through the automatic door 1 stops for a while, the object detection switch 2 detects a new passerby at point B and turns ON, and the motor 4 is driven to rotate by a command from a control circuit (not shown) to open the door. 3 begins to open. Then, the door detection switch 7 returns to OFF, so the timing circuit 8 finishes counting and sends the measured time to the door open holding time setting calculation circuit 9 as the door closed state time Tc. The door open holding time setting calculation circuit 9 sets the door open holding time To by calculating the received door closed state time Tc and sending it to the drive control circuit 10.
Shortly after door 3 finishes opening, when a passerby passes automatic door 1 at point C, object detection switch 2 is activated.
Return to OFF. The drive control circuit 10 detects when the object detection switch 2 is switched from ON to OFF, starts timing the set door open holding time To, and after timing ends at point D. The timing at which the motor 4 is driven to rotate is controlled so that the door 3 starts to close. Then, once the door 3 has been closed again, the timing circuit 8 starts counting the door closed state time Tc for the next time a passerby approaches, and this process is repeated thereafter. As shown in FIG. 4a, when the door closed state time Tc ₁ is long, the door open holding time To ₁ becomes short, and when the object detection switch 2 returns to OFF, the door 3 starts to close in a short time. As shown in Fig. 4b, when the door closed state times Tc ₂ and Tc ₃ are short, the door open holding times To ₂ and To ₃ become long, and it is not enough after the object detection switch 2 returns to OFF. Door 3 will begin to close after a period of time. Also, once object detection switch 2 is set to _C3 point,
If a new passer-by comes and the object detection switch 2 is turned on again before the long door open holding time To ₃ elapses after the automatic door 1 returns to OFF, the automatic door 1 detects an object. Since the door 3 cannot be closed when the switch 2 is in the ON state, the door 3 remains open and a new passerby passes by, and the object detection switch 2 is turned on again at point _C'3 . After returning to OFF, the door 3 is closed at point D' ₃ after the door open holding time To' ₃ has elapsed. At this time, the door open holding time To′ ₃ can be calculated by re-clocking the door open holding time To ₃ that has not finished counting from the beginning, but in such a case, the door closed state time Tc is zero. If so, it is better to provide a control circuit so that the door open holding time To is set to the longest time.

As explained above, according to the present invention, during times when objects such as people pass through the automatic door 1 sparsely, the door closed state time Tc becomes longer, and as a result, the door open holding time To becomes shorter, so that the air conditioning effect is reduced. It is possible to prevent wastage, and during times when there are many people and other objects passing through the automatic door 1, the door closed state time Tc becomes shorter, and as a result, the door open holding time To becomes longer, so the door 3 that has started to close is closed. The number of reversing operations of the door 3, such as opening it again before the opening is completed, is reduced, and there is no risk of causing discomfort or anxiety to passers-by.

In the example, the door closed state time Tc is defined as the time from when the door detection switch 7 is turned ON until it returns to OFF, that is, from when the door 3 finishes closing until it starts to open again. The time Tc is measured by setting an appropriate time interval as a control amount from the time when an object such as a person passing through the automatic door 1 stops until the next object comes, so it is not necessarily limited to this. Without, the door closed state time Tc is set to door 3.
The time from the start of closing to the start of opening is the same if the closing speed of the door 3 is constant. However, if the closing speed of the door 3 is changed to be slow enough to allow many people or other objects to pass through the automatic door 1 in a row in order to avoid causing anxiety to passers-by, then The shorter the time, the more objects such as people will pass through the automatic door 1 in succession.As a result, the closing speed of the door 3 will also be slow, so it will take time for the door 3 to finish closing, and the passing state of the automatic door 1 will change. Since the displacement of the door closed state time Tc due to the change in is canceled out, it is inappropriate as a control variable for setting the door open holding time To. Furthermore, if the door closed state time Tc is the time from when the object detection switch 2 returns to OFF until the door 3 starts to open, in addition to the time until the door 3 finishes closing, people passing through the automatic door 1 etc. Since this includes the previous door open holding time To, which increases as the number of objects increases, the displacement of the door closed state time Tc is canceled out, which is inappropriate.
In this way, the door closed state time Tc does not necessarily have to be measured by the door detection switch 7 of the embodiment, but can also be measured by a micro switch installed elsewhere or by detecting the rotation of the motor 4. However, it is necessary to avoid measuring an inappropriate time interval as a control variable for setting the door open holding time To.

In addition, if a reversal operation of the door 3 occurs, in which a new passing object comes and the door starts to open again after the door has started closing before it finishes closing, the door open holding time To ₃ explained in Fig. 4b will change. As in the case where a new passerby arrives before the passerby passes by, it is not possible to measure the door closed state time Tc for setting the door open holding time To after the passerby has passed. Last door open holding time To
It is also possible to set and use it again, but
In this case as well, it is better to provide a control circuit so that the door closed state time Tc is zero and the door open holding time To is set to the longest time. In addition, in the embodiment, such a control circuit closes the door if the object detection switch 2 is turned on again before the door detection switch 7 is turned on after the object detection switch 2 is turned off. This is possible by configuring the circuit so that the state time Tc is zero and the door open holding time To is set.

The calculation process from the door closed state time Tc to the door open state time To in the door open state time setting calculation circuit 9 may be performed in such a manner that the shorter the door closed state time Tc, the longer the door open state time To becomes. So,
The relationship is not limited to a linear relationship as shown in the diagram of FIG. 3, but may be a curvilinear relationship such as an inverse proportional curve or a relationship in which the door open holding time To changes stepwise. In addition, even if the door closed state time Tc becomes longer than a certain level, it is not necessarily necessary to reduce the door open holding time To to zero, but for safety reasons, it is necessary to set it to a certain short time or set it to this short time. It may be made to be asymptotic. In addition, door open holding time
The maximum time of To is set to such a length that the door 3 is almost never closed during the time period when passers-by come to the automatic door 1 relatively constantly.
It is set longer than the door open holding time To' of a conventional general automatic door, which is fixedly provided regardless of the door closed state time Tc.

The automatic door 1 is not limited to the automatic door of the draw opening/closing method as in the embodiment, but may use any type of opening/closing method. The motor 4 is not limited to a capacitor motor, and may also be an automatic door using a drive device other than such an electric type, such as an air cylinder. In addition, the object detection switch 2 is not limited to a combination of a matsuto switch 5 and a photoelectric switch 6 as in the embodiment, as long as it can detect when an object such as a person has passed, and it can also be used as a switch that reflects radio waves or ultrasonic waves. A ceiling switch that detects passing objects may be used in place of the pine switch 5, or switches of other mechanisms may be used in combination.

Incidentally, the present invention can be implemented using a microcomputer in the control circuit, and in this case, the opening/closing control of the automatic door 1 can be entirely performed by the microcomputer.

[Brief explanation of drawings]

FIG. 1 is an explanatory perspective view of an automatic door implementing this invention, FIG. 2 is a block diagram of an embodiment of this invention,
FIG. 3 is a chart showing the relationship between the door closed state time and the door open holding time, and FIGS. 4a and 4b are time charts showing the relationship between the signal of the object detection switch and the opening/closing operation of the door, respectively. 1... Automatic door, 2... Object detection switch, 3... Door,
4...Motor, 8...Time measurement circuit, 9...Door open holding time setting calculation circuit, 10...Drive control circuit, Tc...Door closed state time, To...Door open holding time.

Claims (1)

[Scope of Claims] 1. Each time the automatic door opens, the door closed state time is determined based on the door closed state time determined from the time when objects such as people stopped last time until the current passerby arrives. The door opening holding time is set so that the shorter the door opening holding time is, the longer it becomes, and the door driving device is set so that the door is closed after the set door opening holding time has elapsed after an object such as a person has passed through the automatic door. A method for controlling the opening and closing of automatic doors. 2. The automatic door opening/closing control method according to claim 1, wherein the door closed state time is determined as a time interval from when the door finishes closing until the next door starts opening. 3 Each time an automatic door opens, there is a timing circuit that measures the time that the door is closed, which is determined from the time when objects such as people stopped last time until the arrival of the current object, and the time that the door is closed is short. I see, there is a door open holding time setting calculation circuit that performs arithmetic processing so that the door open holding time will be longer this time, and sets this door open holding time. An automatic door opening/closing control device comprising a drive control circuit that controls a door drive device to close the door after a set door open holding time has elapsed. 4. The automatic door opening/closing control device according to claim 3, wherein the timing circuit that measures the door closed state time is a circuit that measures the time interval from the time when the door finishes closing until the next time the door begins to open. .