JPS62225679A - 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 Field of Industrial Application The present invention relates to a method for controlling the opening and closing operations of an automatic door in accordance with the frequency of foot traffic.

Conventional technology In conventional automatic doors, the door starts opening when the human body detection signal reaches 07V, and the door is held open for a predetermined period of time after the human body detection signal turns OFF, the door dies, or the door is fully opened. , then K to start closing the door, and when the human body detection signal turns ON after the door starts closing, the door opens, and after keeping it open for a predetermined period of time, closes the door again. I have to.

Problems to be Solved by the Invention However, in the conventional automatic door mentioned above, the time for which the door is held open, that is, the time it is held open, is fixed. In the evening when you go to work or leave work, or during your lunch break, the door starts to close but before it closes, that is, when the door is about to close, someone comes and the human body detection signal goes 0), causing the door to open. The number of times the tuna door reverses is increased. This causes the motor to rapidly repeat forward and reverse rotations many times, causing heating and impact force to be applied to the door, belt, etc. many times. Measures and functions to solve the problem that causes the life of automatic doors to be shortened by increasing the open holding time in proportion to the number of times the door is completely closed, thereby reducing the frequency of foot traffic. The door can be held in the open position for a long time when the number of doors is high, thereby reducing the number of times the door has to be reversed.

Embodiment FIG. 1 is a schematic diagram of an automatic door, in which a door 4 is connected to a belt 3 that is passed between a drive pulley I and a driven pulley 2, and the drive pulley 1 is connected to a motor by a reducer 5. 6, and the door 4 is opened and closed by rotating the motor 6 in the forward and reverse directions.

An open deceleration point detection switch 7 and an open end detection switch 8 are provided on the open end side of the field 4, and a closed deceleration point detection switch 9 and a closed origin detection switch 1 are provided on the closed end side.
The detection signals of each switch are respectively input to the control circuit 11, and the human body detection signal R5 from the human body detector 12 is input to the control circuit 11.

The control circuit 11 includes a sequence circuit 13 and a speed control circuit 14 as shown in FIG. Close, high speed/low speed/brake signals are input, and the motor 6 is rotated forward/reverse to allow the door 4 to perform normal opening/closing operations, and is held open based on the number of reversals counted by the reversal count circuit 15. It is equipped with an open hold time calculation setting circuit 16 that calculates the time, and yi! 4 to the closing origin so that the open holding time can be changed and set as shown in FIG. It is equipped with a dial 18 for changing the holding time.

An example of the opening/closing operation of a door according to the opening/closing control method according to the present invention will be described below with reference to the time charts shown in FIGS. 1 to 3 and 4.

(1) Human body detection signal R3 is turned on from human body detector 12
Then, the motor 6 rotates forward and the door 4 moves to open until it reaches the opening end. After the human body detection signal R1 turns OFF, after the open holding time t set by the normal open holding time setting device 17 has elapsed, the motor 6 is reversed, the door 4 moves closed, and stops at the closing origin. . This operation is shown in FIG. 41.

(2) In the same way as in (1) above, after n4 starts closing movement and before it reaches the closing origin, the human body detection signal R is sent again.
1 turns on, the motor 6 immediately switches to normal rotation and the door 4 moves open. As a result, the reversal number counting circuit 15 counts 1 [-1. Thereby, the open holding time calculation setting circuit 16 calculates the open holding time 't (tt>
tt) and set the human body detection signal RI.
When the opening holding time t has elapsed after the door 4 is turned off, the motor 6 is reversely rotated to close and move the door 4.

In this way, when the door 40 is reversed once, the opening holding time is t.
, to t, and the time from when the human body detection signal R1 turns OFF after one reversal operation until the start of the closing movement becomes long.
Even if 7 is turned ON, the time during which the door 4 can be closed and not moved becomes longer, and as shown in FIG.

Since g & 4 does not operate in reverse even if input is input, the number of times of reversal can be reduced, and the open holding time t during normal operation can be made shorter than before, which shortens the open time during normal operation and saves energy during heating and cooling. .

(3) As shown in FIG. 4 (K), after the door 4 is reversed once and the human body detection signal R1 is turned off, the open holding time t has elapsed, the motor 6 is reversed, and the jir I4 starts closing and moving ( 7. If the human body detection signal R8 turns ON again before reaching the closing origin, the motor 6 rotates forward and the door 4 moves open, that is, when the second reversal operation is performed, the reversal number counting circuit 15 counts 2, Therefore, the open hold time calculation setting circuit 16 sets the open hold time t% corresponding to the number of reversals twice.
(is >tx)i! , ) are calculated and set, and the door 4 is held in the open position for a time t after the human body detection signal R1 is turned off.

In this way, if the reversing operation is performed a plurality of times between when the door 4 is opened and until it is completely closed, the open holding time becomes longer in proportion to the number of times the door 4 is reversed, so that the probability of the reversing operation decreases.

In other words, as the frequency of people passing increases, the time to hold the door open becomes longer, and the time from when the human body detection signal turns OFF until the door 4 starts closing becomes longer. remains open and reverses operation (,
It disappears.

FIG. 5 shows a specific example of the reversal number counting circuit 15 and the open holding time calculation setting circuit 16, including a counter 20 that counts the number of reversals, and a first counter that changes the set time according to the counted value.
A timer 21, a second timer 23 whose set time is changed with a knob 22, and first and second flip-flops 24, 25.
7! :, the counter 20 outputs zero when the CL flaw signal is H, counts 1 at the rising edge of the CK multiplied signal when the CL flaw signal is L, and the first and second timers 21.23
Output is prohibited when the flaw signal is H, and when the CL flaw signal becomes L, the signal is output for a set time.

The details will be explained below along with the operation.

When the door 4 is at the closing origin, the ON signal of the closing origin detection switch 8 is input to the R of the first flip-flop 24, and θ
Since H1θ becomes L, the CL damage signal of the counter 20 becomes H, and the counter 20 is cleared.

If the human body detection signal R1 turns ON in this state, the first and 27th
A signal is input to S of lip-flop 24.25, and θ is L.
1θ becomes H, H is input to B of the first AND gate 26, and the open signal (B) is input to the second flip-flop 25.
The CLK of the counter 20 is inputted as L.

On the other hand, since H is input to A and H of the first OR gate 27 and outputs H, CLFc of the first tJc2 timer 21.23 receives H and does not output a signal, so the output of the second OR gate 28 is becomes L, and the first AND gate 26
outputs H, the motor 6 rotates forward, and the door 4 opens and moves. At this time, since H is input to B of the second AND gate 29, the output becomes H and the counter 20 counts 1.

When the door 4 reaches the opening end, the opening end detection switch 1 is activated.
0 turns ON and is input to R of the 27th lip-flop 25, and θ becomes L, so a close signal (7,) is output.

When the human body detection signal R0 turns OFF, L is input to A and B of the first OR gate 27, so the output becomes L, and the first
L is input to the CL of the second timers 21 and 23 and outputs a signal, but the first timer 21 is set to a time corresponding to 1 on the counter 20, but this time is longer than the set time of the second timer 23. is also short, so the second timer 23
The signal is output for the set time T1, and the second or game)
2g outputs H for that time, A of the first AND gate 26 becomes L, and the output becomes L, so the door 4 is stopped. In other words, the set time T is the open holding time 1
．． becomes.

Then, when the set time has elapsed, the output of the first OR gate 27 becomes L and the output of the first AND gate 26 becomes H, so an operation signal is output, the motor 6 is reversed, and #4 moves to close, returning to the closing origin. When the closing point detection switch g is turned ON, input is made to R of the 17th lip-flop 24, and since θ becomes H1 and θ becomes L, BKL of the first AND gate 26
is input and the output becomes L, so the motor 6 stops and the door 4
stops.

On the other hand, if the human body detection signal RI is input again before the door 4 moves to close and reaches the closing origin, it will operate in the same way as described above, but since the counter 2o has not been reset, the counted value becomes 2, and the first timer 21 Since the set time is longer than the set time of the second timer 22, the open holding time of #4 becomes longer.

Benefits of the invention: When there are many people passing by, the door can be held in the open position for a long time, reducing the number of times the door flips over, reducing motor heating, and impacting force acting on the door, belt, etc. This reduces the number of times the door needs to be opened and increases the lifespan of the automatic door.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a schematic diagram of an automatic door, FIG. 2 is an explanatory diagram of a control circuit, FIG. 3 is a chart showing the relationship between open holding time and number of reversals, and FIG. 1) to (I) are operation time charts, and FIG. 5 is a circuit diagram showing a specific example of a reversal frequency counting circuit and an open holding time calculation setting circuit.

Claims (1)

[Claims] A door opening/closing control method in which the door is opened and moved when the human body detection signal is turned ON, and the door is held open for a predetermined period of time from when the human body detection signal is turned OFF or the door is fully opened, and then the door is closed and moved. in which, when a new human body detection signal is turned ON after the human body detection signal is turned OFF and the door is moved to close, until the door is completely closed, the door is reversed, and the number of times the door is reversed is counted; A door opening/closing control method for an automatic door, characterized in that the opening holding time is lengthened in proportion to the number of times the door is reversed.