JPH0158307B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for controlling the drive of an automatic door having a drive device capable of controlling the degree of opening of the door.

Conventional automatic door drive control methods issue an opening command to the drive device when either an internal detection switch installed on the inside of the door or an external detection switch installed on the outside of the door detects a passing object. The door is now fully open. However, with this conventional control method, even if the area near the door is crowded and the door needs to be opened wide, or conversely, there is only one passerby and the door can be opened narrowly, Since there is only one type of opening command, the door is always fully opened to a preset opening degree when a passing object is detected. For this reason, for example, in large automatic doors with a full opening stroke installed at the entrances and exits of buildings with large frontages, the door opens fully even when there is only one passerby, opening more than necessary. This resulted in air conditioning loss, which was not desirable for energy conservation.

This invention was made in view of the above circumstances, and when the area near the door is crowded and there are many pedestrians passing through the doorway, the opening of the door is widened to make it easier for people to pass through. An object of the present invention is to provide a drive control method for an automatic door that prevents air conditioning loss by reducing the opening degree of the door when there are few objects passing through the door.

In order to achieve this object, the present invention is characterized by providing, in addition to the conventional inside detection switch and outside detection switch, a door opening detection switch that detects objects passing through the door opening. The system determines the traffic condition based on detection signals from the detection switch, outside detection switch, and door opening detection switch, and controls the drive device to open the door appropriately.

A specific control method of the present invention will be explained below based on the drawings.

In FIG. 1, two automatic doors 1a and 1b installed at the entrance of a building are driven by a drive device (not shown) in the door 8 to move away from each other to open the entrance. , conversely, move in the direction of approaching each other and close the entrance/exit. These two doors 1a,
An inner detection switch 2 consisting of a floor mat or the like for detecting objects passing through is provided inside the building than 1b, and an outside detection switch 3 consisting of a floor mat or the like for detecting objects passing through is provided on the outside thereof. Furthermore, a door opening detection switch 4 made of a phototube switch or the like is provided to detect objects passing through the openings of the two doors 1a and 1b. A closed position detection limit switch 5, which detects when the door 1a is in the fully closed position, is installed in the door 1, which is fixed to the building.
A predetermined opening position detection limit switch 6 detects when the door 1a reaches a predetermined opening position smaller than a preset full open position, and a full open position limit switch 7 detects when the door 1a reaches a preset fully open position. Three types of detection limit switches are installed. The above three types of detection limit switches can be installed only for the door 1a as in the embodiment, or conversely, only for the door 1b, or can be installed for both the doors 1a and 1b. ,1
The detection signals of each detection limit switch can be used in parallel, or, for example, in the case of a belt drive system, the detection signals can be set at positions corresponding to fully open, fully closed, and predetermined opening positions using metal fittings attached to the belt. Various methods can be considered, such as detecting each position by operating a limit switch or the like, and each position may be detected by a method suitable for each automatic door.

FIG. 2 is a block diagram of the present invention which sends a door operation signal based on the detection signals of each detection switch and each detection limit switch described above to the control circuit 11 that controls the automatic door drive device 10. In the figure, 12 is an OR circuit to which the detection signal of the inside detection switch 2 and the detection signal of the outside detection signal 3 are input, and when either the inside or outside detection switch detects a passing object and generates a detection signal. Then, the output is sent to the control circuit 11 as a first signal 13. here
A detection signal from the door opening detection switch 4 can also be inputted to the OR circuit 12, so that the first signal 13 is output even when the door opening detection switch 4 detects a passing body. If this is done, even if a passing object is not detected by either the inside or outside detection switch, the door will not close and pinch the passing object, and the door opening detection switch 4 will also serve as a safety switch. be able to. Next, 14
is a time counter circuit, and when the door opening detection switch 4 detects a passing body and outputs a detection signal, it starts counting the time from that point, and the set time circuit 1
When the door opening detection switch 4 detects a passing body again and outputs a detection signal within the set time determined by the set time circuit 15, it outputs an output to the self-holding circuit 16. If it exceeds the time limit, the timer is reset, and even if a detection signal from the door opening detection switch 4 is received after the reset, no output is made. The output from the time counter circuit 14 is held by the self-holding circuit 16 until the doors 1a, 1b reach the fully open position and is detected by the fully open position detection limit switch 7. While the output is held, the second signal 17 is sent to the control circuit 11. sent to.

In this way, the control circuit 11 receives the first signal 13,
The drive of the automatic door drive device 10 is controlled in response to the second signal 17, but when the second signal 17 and the first signal 13 are received at the same time, the full open signal 17 is given priority. The control circuit 11 receives the first signal 13
If the door 1a and 1
When the drive device 10 is driven open until b reaches a predetermined opening position smaller than full open and a detection signal from the predetermined opening position detection limit switch 6 is received, and then the drive is stopped, and when the second signal 17 is received. As shown in FIG. 4, the circuit is configured to drive the drive device 10 open until the doors 1a, 1b reach the fully open position and receive a detection signal from the fully open position detection limit switch 7, and then stop driving.

Next, when the doors 1a and 1b are stopped at the predetermined opening position and when the doors 1a and 1b are also stopped at the fully open position, the inside detection switch 2, the outside detection switch 3, and the door opening detection switch 4 are activated. When none of the three types of detection switches detect a passing object, that is, the first signal 13 disappears and the second signal 17 also disappears, so there is no signal to drive the drive device 10 to open the door. It means I'm getting old. When the first signal 12 disappears in this way, the drive device 10 starts to drive to close, and as shown in FIG. When received, the closing drive stops. Here, when the first signal 12 disappears, if the closing drive of the drive device 10 is not started immediately but after a certain period of time, if there is always a certain amount of traffic or more, This is effective in preventing the door from being opened and closed more than necessary. Now, the drive device 10 is controlled by the control circuit 11 in this way, but as can be seen from the above, the drive device 10 does not receive the first signal 12 even when the doors 1a and 1b are stopped at the fully open position. Since the doors 1a and 1 are not driven to close unless
b does not move from the fully open position and stop at the predetermined opening position, but this means that doors 1a,
This is to avoid giving a sense of fear due to 1b starting to close.Furthermore, in consideration of this point, a storage section for the control circuit 11 in the fully open state is provided,
Once the door is in the fully open position, the signal (first,
It has a fully open holding function that keeps the door in its fully open position as long as the second signal) is input.
Further, the first signal 13 and the second signal 17 are transmitted to the control circuit 11 during the closing movement of the doors 1a and 1b from the fully open position.
It is also possible to unconditionally drive the door open toward the fully open position when the door is opened.

Next, we will check the operation of the automatic door described above for several traffic patterns. Here, the moving time of the doors 1a, 1b from the closed position to the predetermined open position, and the moving time of the doors 1a, 1b from the predetermined open position to the fully open position.
and the door 1a in each reverse case,
The moving time of door 1b is T ₀ , the moving time of doors 1a and 1b from the closed position to the fully open position and vice versa
The moving time of a and 1b is 2T ₀ , time counter circuit 1
The setting time of the setting time circuit 15 for setting the reset time of 4 will be explained assuming that the setting time is _T1 .

In the case of one-way traffic as shown in Fig. 6, in which the traffic body A passes through the automatic door installed at the entrance from the inside of the building to the outside, the traffic body A first turns on the inside detection switch 2.
Detected by and simultaneously ORed as a door activation signal
A first signal 13 is sent to the control circuit 11 through the circuit 12, thereby causing the drive device 10 to start driving to open. After time _T0 , the doors 1a and 1b reach the predetermined opening position and when detected by the predetermined opening position detection limit switch 6, the opening drive is stopped. The object A is then detected by the door opening detection switch 4 and the outside detection switch 3 in this order, and during this time the OR circuit 12 continues to output the first signal 13, so the doors 1a and 1b maintain the predetermined opening position. When the passing body A passes by and neither the inside/outside detection switch nor the door opening detection switch 4 detects the passing body, the first signal 13 disappears and the drive device 10 starts the closing drive, and let this time be _t1 . After time t ₂ = t ₁ +T ₀ , doors 1a and 1b are fully closed, detected by closed position detection limit switch 5, and actuated by drive device 1.
0 stops the closing drive.

Next, we will explain so-called two-way traffic, in which one object passes through an automatic door from the inside to the outside, and another object passes through the automatic door from the outside to the inside. Object B passes through the automatic door from the inside to the outside at time t ₃ , as if passing through.
When a passing object C passes through the automatic door from the outside to the inside at time _t4 , when the passing object B is detected by the inside detection switch 2 at time _t3 , the first signal 13 is outputted through the OR circuit 12 and the door is activated. The device 10 starts the opening drive, and the time
T ₀ When the rear doors 1a, 1b reach a predetermined opening position, the predetermined opening position detection limit switch 6 detects this and stops the opening drive. After the doors 1a and 1b are stopped at a predetermined opening position, a passing object B is detected by the door opening detection switch 4 at time _t5 , and a passing object C is detected by the door opening detection switch 4 at time _t6 . At this time, at time _t5 when the passing object B is detected, the time counter circuit 14
is activated and starts counting, and at the same time, at time _t5 , the set time circuit 15 is activated and continues counting for this set time _T1 . In this case, there is a relationship of time t ₆ < t ₅ +T ₁ , that is, time t ₆ when the door opening detection switch detects the passing object C is within the counting period, so the time counter circuit 14 detects the passing object B, Detects the passage of C and outputs an output to the self-holding circuit 16,
At the same time, the self-holding circuit 16 sends a second signal 17 to the control circuit 11 so that the drive device 10 starts to open. This second signal 17 is applied to the door 1 from the time _t6 .
a, 1b reach the fully open position and are detected by the fully open position detection limit switch 7, and the detection signal resets the self-holding of the self-holding circuit 16, t ₇ = t ₆ +
The second signal 17 is output until T ₀ , and at the same time as the second signal ₁₇ disappears, the opening drive of the drive device 10 also stops. Doors 1a and 1b are in the fully open state at time t ₈ when pedestrian C
has passed through the automatic door, and the inside detection switch 2, outside detection switch 3, and door opening detection switch 4 are maintained until they no longer detect any objects passing by, and the drive device 10 starts the closing drive at the time _t8 . and time t ₉ =
When the doors 1a and 1b reach the fully closed position at t ₈ +T ₀ , the closed position detection limit switch 5 detects this and the drive device 1
0 close drive stops.

Regarding the two-way traffic described above, as shown in Figure 6, the traffic body D starts passing through the automatic door from the inside to the outside at time _t10 , and the vehicle D starts passing through the automatic door from the outside to the inside at time _t11 . When the passing object E is detected by the door opening detection switch 4 at time _t12 and time _t13 , respectively, the time counter circuit 1 similar to the above is activated.
4, the time t ₁₃ at which the passing object E is detected by the door opening detection switch 4 is _{the time t 13 >}
Since t ₁₂ +T ₁ , when the passing object E is detected by the door opening detection switch 4, the timing counter circuit 1 is activated.
4 has already been reset, that is, it is determined that one passing object has passed within the set time _T1 , and the self-holding circuit 16 is output from the timing counter circuit 14.
Since the second signal 17 is not outputted and therefore the second signal 17 is not outputted, the doors 1a and 1b remain in the predetermined opening state while the traffic body D and the traffic body E pass.

In this way, when there is a sufficient difference in the time when objects D and E approach the door, as in the case of two-way traffic shown in FIG. 6, the time t when both objects are detected by the door opening detection switch There is also a sufficient difference between ₁₂ and _t13 . This difference is the set time of the time counter circuit 14.
If it is T ₁ or more, it is determined that the area near the door is not crowded and the door is opened to the predetermined opening position, and if this difference is less than the set time T ₁ , the area near the door is not crowded as if there is two-way traffic. It determines that the door is open and opens the door to the fully open position.

To explain the continuous traffic shown in Figure 6 as a subsequent traffic pattern, first, the traffic body F
Suppose that at time t ₁₄ a passing object G begins to pass through the automatic door from the inside to the outside, and then at time t ₁₅ a passing object G also begins to pass through the automatic door from the inside to the outside. At time t ₁₄ , the passing object F switches on the inside detection switch. At the same time as being detected by 2
The first signal 13 is output through the OR circuit 12, and the drive device 10 starts to drive to open the door 1a, and after time _T0 , the door 1a,
When the door 1b reaches the predetermined opening position and is detected by the predetermined opening position detection limit switch 6, the opening drive is stopped and the doors 1a and 1b are maintained at the predetermined opening position. door 1
After a and 1b stop at the predetermined opening position, a passing object F is detected by the door opening detection switch 14 at time _t16 ,
Next, at time _t17 , the passing object G is similarly detected by the door opening detection switch 4. At this time, the time counter circuit 14 starts counting at time _t16 when the passing object F is detected, continues counting for a set time _T1 set by the set time circuit 15, and the passing object G detects the door opening. The time t ₁₇ detected by the switch 4 has the relationship of time t ₁₇ < t ₁₆ +T ₁ , and is within the set time T ₁ , so the time counter circuit 14 outputs an output to the self-holding circuit 16 and simultaneously holds the self-holding circuit 16. circuit 16
A second signal 17 is sent to the control circuit 11, and the drive device 10 starts opening drive. When the doors 1a and 1b reach the fully open position at time t ₁₈ = t ₁₇ +T ₀ and are detected by the fully open position detection limit switch 7, the self-holding of the self-holding circuit 16 is reset by the detection signal, so the second signal is sent at this time. is no longer output, and at the same time, the opening drive of the drive device 10 is also stopped. At time _t19 , the object G has passed through the automatic door, and the inside detection switch 2, the outside detection switch 3, and the door opening detection switch 4 are activated.
When all of the passing objects are no longer detected, the drive device 1
0 starts closing drive, doors 1a and 1b at time t ₂₀ = t ₁₉ +
At 2T ₀ , the fully open position reaches the fully closed position, which is detected by the closed position detection limit switch 5, and the closing drive stops.

For the above continuous traffic, a passing body H as shown in Fig. 6 starts passing through the automatic door from the inside to the outside at time t ₂₁ , and then at time t ₂₂ , the passing body H starts passing through the automatic door from the inside to the outside. If it starts to pass,
When a passing object is detected by the door opening detection switch 4 at time t ₂₄ , a time counter circuit starts counting from time t ₂₃ when a passing object H is also detected by the door opening detection switch 4 and that time t ₂₃ . With respect to the set time T ₁ set by the set time circuit 15 of No. 14, _the time t ₂₄ becomes time t ₂₄ > t ₂₃ +T ₁ .
has been reset, that is, it is determined that only one passing object has passed within the set time _T1 , and no output is made to the self-holding circuit 16, so the second signal 17 is not output. In other words, in the case of continuous traffic, even if two objects pass through the automatic door in succession, the interval detected by the door opening detection switch 4 is longer than the set time _T1 of the set time circuit 15, so the area near the door is It is determined that it is not crowded, and the door is held at a predetermined opening position while two objects pass, and the door is opened for a set time.
If it is within T ₁ , it is determined that the area near the door is crowded, as in the case of continuous traffic, and the door is placed in the fully open position.

As described above, according to the automatic door control method of the present invention, when one object passes through the automatic door from the inside to the outside of the building, the opening of the two doors 1a and 1b of the automatic door is can be controlled to a predetermined opening smaller than a predetermined full opening,
This is exactly the same when a passing object passes through an automatic door from the outside to the inside of a building. Furthermore, 2
Two-way traffic, in which two objects pass through an automatic door, one from the inside of the building to the outside and the other from the outside to the inside, or continuous, in which two or more objects pass through the automatic door in the same direction. Even in the case of passing traffic, if the passing interval is longer than a certain time, it is determined that the area near the door is not crowded, and the doors 1a and 1b are set to a predetermined opening position, and the door is opened in either case as in the past. Compared to automatic doors that open fully, air conditioning loss can be prevented and energy savings can be achieved. or,
On the other hand, in the case of two-way traffic or continuous traffic as described above, if the interval between multiple vehicles is within a certain amount of time, it is determined that the area near the automatic doors is becoming crowded, and the doors 1a and 1b are opened fully. It is now possible to make it easier for vehicles to pass through by controlling the

[Brief explanation of drawings]

The drawings are all related to this invention, and the drawings are all related to this invention.
The figure is an explanatory diagram of the automatic door in the middle of opening and closing, Figure 2 is a block diagram, Figure 3 is a diagram of the door state when it is detected by the predetermined opening position detection limit switch, and Figure 4 is the fully open state and the fully open position detection limit switch. Figure 5 is a diagram of the door status when it is fully closed and detected by the closed position detection limit switch. Figure 6 is a diagram of the door status when it is fully closed and detected by the closed position detection limit switch. Figure 6 is the interior detection switch 2, exterior detection switch 3, and The detection state of the door opening detection switch 4, the count period by the time counter circuit 14, and the output state of the self-holding circuit 16,
It is a time chart showing a door operation signal and a door state. 1a, 1b...Door, 2...Inside detection switch, 3
...Outside detection switch, 4...Door opening detection switch, 5...Closed position detection limit switch, 6...
Predetermined opening position detection limit switch, 7... Fully open position detection limit switch, 10... Drive device,
11... Control circuit, 13... First signal, 17...
Second signal.

Claims (1)

[Claims] 1 When one of the following detection switches is activated: an inside detection switch installed on the inside of the door, an outside detection switch installed on the outside of the door, and a door opening detection switch installed to detect objects passing through the door opening, In an automatic door that opens the door when a body is detected, when any of the three types of detection switches described above detects a passing body, a first signal is sent to a control circuit of a drive device that opens and closes the door, This first signal drives and controls the drive device to open the door to a predetermined opening angle smaller than full opening, and when the door opening detection switch detects a passing object continuously within a certain period of time, the door opening is controlled. A method for controlling the drive of an automatic door, characterized in that a second signal is sent to a circuit, and the drive device is controlled by the second signal to fully open the door.