JPS62225680A - Door open-close control method of power door - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a method for controlling the opening and closing of an automatic door, and more specifically, a method for controlling the opening and closing of an automatic door, and more specifically, a method for controlling the opening and closing of an automatic door. This invention relates to a method of changing retention time.

Conventional automatic doors do not close immediately after a person or other object has passed through, and the human body detection signal is turned OFF. Instead, the door is opened and held at the end position for a predetermined period of time, and the door is held in the end position when the object passes by. The danger of being pinched is removed to avoid creating a sense of fear in people passing by.

However, if the above-mentioned opening time is long, a large amount of the air inside the building will flow outside, resulting in a loss of heating and cooling energy.On the other hand, if the opening time is too short, the door may be closed to pedestrians if there are a large number of pedestrians or if there is a high frequency of traffic. There is a high probability of collision, which is dangerous.

For this purpose, as shown in Japanese Unexamined Patent Publication No. 59-126883, the number of vehicles that pass through the automatic door within a certain period of time is detected, and the higher the number of vehicles, the longer the door is held open. control method or Japanese Patent Application Laid-Open No. 58-766
As shown in Japanese Patent Application No. 70, a control method is known that detects a nasal blockage state and lengthens the time for which the door is kept open, such as when the nasal blockage state is short.

With such a control method, the time for keeping the door open can be set depending on the number of objects passing through and the frequency of passage, so the above-mentioned problems can be solved to some extent.

Problems to be Solved by the Invention In the former method, the set door open holding time is a control that is effective from the time the corresponding number of traffic is detected until the next new number of traffic is detected. Therefore, if the set time for detecting the number of traffic is long, the opening/closing of the door will be controlled based on the previously detected number of traffic until the set time elapses, so the traffic frequency will be reduced. If there is a sudden change in the weather conditions, etc., the door may not be able to respond, and the door may end up needlessly leaving the door open, resulting in a collision between the door and a passing object.

Well, if the ninth set time for detecting the number of traffic is too short, there will be a lot of variation in the number of traffic detected, and the traffic trend cannot be accurately grasped, resulting in the same problem as described above.

For this reason, the former control method may not be able to sufficiently achieve the initial objective.

In the latter control method, the next open holding time is changed and set based on the door's closed state time, so if the rate of change in the number of pedestrians increases or decreases gradually, it is necessary to adjust the door accordingly. Since the open/hold time can be changed and set sequentially, opening/closing can be controlled according to traffic trends, but if the rate of change in the number of traffic is large, the change setting of the open/hold time cannot keep up with the number of traffic, causing some problems. 1. For example, if a large number of passersby come in succession after the door has been opened and closed for a long time, the set open holding time is short, so there is a risk that the door will close when a second passerby attempts to enter the door. In addition, if there are consecutive objects coming in succession and the open holding time is set to be long, the door will remain open for the set long time after the last object passes.

In this way, the above-mentioned two control methods cannot fully satisfy the initial objective.

Means and effect for solving the problem The door is kept open according to the number of pedestrians and the frequency of passage by increasing the time the door is kept open in proportion to the time that the human body detection signal is continuously ON. It is designed so that it can be set by changing the time.

Embodiment FIG. 1 is a schematic diagram of an automatic door.The door 4 is connected to a belt 3 that passes between a driving pulley I and a driven pulley 2, and the driving pulley 1 is connected to a motor 6 via a speed reducer 5. The door 4 opens and closes by rotating the motor 6 in the forward and reverse directions.

An opening deceleration point detection switch 7 is provided on the opening end side of the Ji4.
and an open end detection switch 8 are disposed, and a close deceleration point detection switch 9 and a close origin detection switch 10 are disposed on the close end side, and the detection signals of each switch are input to the control circuit 11. At the same time, a human body detection signal R1 is inputted to the control circuit 11 from the human body detector 12.

The control circuit 11 includes a sequence circuit 13 and a speed control circuit 14 as shown in FIG. , high speed, low speed, brake signal cloth, barking, motor 6 (normal rotation - reverse rotation, so that the door 4 operates normally) It includes a counting circuit 15 for counting, and an open holding time calculation setting circuit 16 for calculating the open holding time based on the counted time.

Next, an example of the opening/closing control method according to the present invention will be explained based on FIG. 3.

(υ When a passing object passes alone, as shown in Fig. 3 (1), when the human body detection signal R8 turns ON, the door 4 opens and moves and is held at the open end position, and the counting circuit 15 detects the human body.) Counting starts as soon as the detection signal R1 turns ON, and counting ends when the human body detection signal R1 turns OFF.The time period during which the human body detection signal R1 is continuously ON is counted, and that time T is set as an open holding time calculation setting circuit. 16
to calculate the open hold time.

Then, after the opening holding time t calculated after the human body detection signal l<1 has elapsed, the door 4 is closed and moved.

The open holding time t at this time is the minimum.

(2) When multiple objects pass by.

It operates in the same way as in case (1) above, but in Fig. 3 (It
), the time T during which the human body detection signal R is continuously ON is longer than the time period in the case (1) described above, so the open holding time t is adjusted accordingly.

(tt>'1) also becomes long, and the human body detection signal R1 turns OFF.
When the next human body detection signal q does not turn on after a long open holding time t has elapsed since then, the switch 4 is closed and moved.

(3) When a passing vehicle passes alone immediately after (2).

If a passing object comes alone immediately after the above-mentioned operation (2) is completed and n4 is completely closed, the door 4 will close after the minimum open holding time t1 has elapsed, as in the case of (1) mentioned above. Moving.

For this reason, the door 4 is not left open unnecessarily, so that the loss of heating and cooling energy can be reduced.

(4) When a large number of vehicles come and pass through a place that has been open or closed for a long time.

Similarly to the above, the open holding time ts (ts > tt) is calculated based on the time period 7's (Ts > 12) during which the human body detection signal R1 is continuously ON, and the human body detection signal R is calculated.
1 is OFF j, and before the open holding time t has elapsed, a passerby comes again and the human body detection signal R1 turns ON.
Time T4 during which this human body detection signal R1 is continuously ON
(7'! >7°a>Ts) is used as an argument to calculate and set the open holding time t4 (ts > t4 > tt), and the open holding time t1 has elapsed since the human body detection signal R1 is op'p. Human body detection signal R0 turns ON again before
In this case, the open holding time is calculated and set based on the continuous ON time of the human body detection signal R0, as described above.

Then, the number of passing bodies gradually decreases and finally becomes a decimal number, for example, after passing alone, the time T1 during which the human body detection signal R1 is continuously ON at that time is short, and the open holding time t
, is the minimum, and the object passes through and the human body detection signal/
(When , is turned off, the door 4 is immediately closed and moved after the elapse of time t1.

Therefore, it is possible to obtain opening/closing operations that suit the frequency of traffic such as morning and evening commuting, leaving work, and lunch breaks.

Furthermore, the number of times the door is reversed can be minimized, and no burden is placed on the motor, other mechanisms, parts, etc.

Furthermore, when there are a small number of passing bodies, the opening closes and moves immediately after a short open holding time, thereby reducing the loss of heating and cooling energy.

Effects of the Invention The open door is held open for a longer period of time in proportion to the time that the human body detection signal that opens and closes the door is continuously ON. The holding time can be changed and set to prevent the door from being held open unnecessarily or collisions between the door and objects passing by, and to control opening and closing of the door in an operation pattern that is appropriate for the number of objects passing by and the frequency of passage. I can do it.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; FIG. 1 is an overall view of an automatic door, FIG. 2 is a control circuit diagram, and FIG. 3 is a diagram showing an operation pattern.

Claims (1)

[Claims] An automatic door that starts to open when the human body detection signal turns ON, and starts to close after keeping the door open for a predetermined period of time from when the human body detection signal turns OFF or when the door reaches the open end position. A door opening/closing control method for an automatic door, characterized in that the door opening/closing time is increased in proportion to the time during which a human body detection signal is continuously ON.