JPH0222836B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a control system for automatic doors of windbreak rooms provided at entrances and exits of buildings, etc.

Traditionally, building entrances and exits have been used to prevent wind and rain from entering the building due to the entry and exit of pedestrians, and to prevent cold and warm air from air conditioning and heating systems from flowing outside. A windbreak room is provided to block ventilation. As shown in FIG. 1, this windbreak room includes a first door 1 that automatically opens and closes at one entrance of the windbreak room A, and a second door 2 that automatically opens and closes at the other entrance. Detection area 3 and detection area 4 are set before and after the first door 1 (traffic direction), and detection area 5 and detection area 6 are set before and after the second door 2 (traffic direction). When a passing object enters the detection area 4, it is detected, and based on the detection signal, a door drive device (not shown) is operated to open the first door, and when a passing object enters the detection area 5 or the detection area 6, the first door is opened. The second door is opened by operating a door driving device (not shown) based on the detection signal.

However, the door of such a conventional windbreak room A detects, for example, when a passing object enters the detection area 3 and opens the first door 1, and then opens the first door 1 until the passing object passes and leaves the detection area 4. The first door 1 is kept open. However, as mentioned above, the purpose of a windbreak room is to block ventilation between the inside and outside of a building, so the door must be closed as soon as possible after a person passes through it. There was an issue where the door would not close immediately after a passerby passed.

In addition, in order to solve the above-mentioned problem, it is sufficient to avoid detecting objects that pass through the door and move away from the door.To achieve this, a detection circuit that can detect directionality has been proposed in the past. However, in this case, as shown by the dotted line in FIG. When a passing object enters from the detection area 4 toward the detection area 7, the opening signal is not issued to the door drive device of the first door 1, and the object passes from the detection area 7 toward the detection area 4. When a body enters, an open signal is issued to the door drive device of the first door 1, and similarly for the second door 2, when a passing body enters from the detection area 6 toward the detection area 8. , an open signal is not issued to the door drive device of the second door 2, and an open signal is issued to the door drive device of the second door 2 when a passing object enters from the detection area 8 toward the detection area 6. A control circuit having a direction selection function may be configured as shown in FIG.

However, with this configuration, if a passing object passes through the first door or the second door and enters the windbreak room, the door can be closed quickly, but the number of detection switches in each detection area is A problem arises in which the number of units is doubled from two to four.

Therefore, in view of the above-mentioned problems, the present invention has been developed to
The purpose is to close the door as quickly as possible after a passerby passes through, and the specific solution is as follows.
A first detection area and a second detection area are formed between one door and the other door of the windbreak room and in the direction of traffic, and a traffic body moves from the first detection area to the second detection area. When the object moves forward, the one door in the direction of movement is opened, and when the object moves from the second detection area to the first detection area, the other door in the direction of movement is opened. This is an automatic door control system for the windbreak room.

The present invention will be described below based on an embodiment shown in the drawings. In Fig. 2, a detection area 10 is set near the outside of the first door 1 provided at one entrance of the wind protection room A, and a detection area 10 is set at the other entrance of the wind protection room A. A detection area 11 is set near the outside of the windbreak room A of the second door 2. Said first door 1
A detection area 12 and a detection area 13 are set approximately in the center of the windbreak room A between the first door 2 and the second door 2 in the direction of traffic (left and right in the figure).
The sensor is placed on the door 1 side, and the detection area 13 is placed on the second door 2 side. Reference numerals 14 and 15 are safety switches that are provided close to each door 1 and 2, and are conventionally used. Next, the control circuit with this configuration is installed in the third
To explain based on the figure, S ₁ is a first detection switch that detects the presence or absence of a passing object in the aforementioned detection area 10, and S ₂ is a second detection switch that detects the presence or absence of a passing object in the aforementioned detection area 11. S ₃ is a third detection switch that detects the presence or absence of a passing object in the detection area 13 described above, and S ₄ is a fourth detection switch that detects the presence or absence of a passing object in the detection area 12 described above. The third detection switch _S3 and the fourth detection switch _S4 are direction selection circuits M and N.
The output sides of these direction selection circuits M and N are connected to the input terminals of the first OR circuit OR1 and the second OR circuit OR2, respectively. Further, the input terminal of the first OR circuit OR1 is connected to a first detection switch _S1 and a safety switch 14 on the first door 1 side via an off-delay type delay timer _T1 and a delay timer _T2, respectively. , second OR circuit OR2
The second detection switch S ₂ on the second door 2 side is connected to the input end of
and safety switch 15 are connected via off-delay type delay timer _T3 and delay timer _T4 , respectively. The direction selection circuit M is a first AND circuit.
A third detection switch _S3 is connected to the input terminal of AN1, and a fourth detection switch _S4 is connected to the on-off delay type delay timer _T5 via the first not circuit NO1, and the output terminal of the first AND circuit AN1. is the third one through the on-off delay type delay timer _T6 .
The output terminal of the third OR circuit OR3 is connected to one input terminal of the second AND circuit AN2, and the output terminal of the third OR circuit OR3 is connected to one input terminal of the second AND circuit AN2.
A fourth detection switch _S4 is connected to the other input terminal of the second AND circuit AN2 via the delay timer _T5 , and the output terminal of the second AND circuit AN2 is connected to the input terminal of the third OR circuit OR3 to This is a configuration in which it is maintained. Furthermore, the output terminal of the second AND circuit AN2 is connected to the first OR circuit OR1 as the output terminal of the direction selection circuit M. The direction selection circuit N is basically the same as the direction selection circuit M described above, so to briefly explain, a fourth detection switch _S4 and a third detection switch S3 are connected to the input terminal of the third AND circuit _AN3 . timer
_T7 are connected to each other via the second knot circuit NO2, and the output terminal of the third AND circuit AN3 is connected to the input terminal of the fourth OR circuit 4 via the timer _T8 ,
The output terminal of the fourth OR circuit OR4 and the third detection switch _S3 are respectively connected to the input terminal of the fourth AND circuit AN4 via a timer _T7 , and the output terminal of the fourth AND circuit AN4 is connected to the fourth OR circuit OR4. The fourth AND circuit AN4 is connected to the input terminal of the OR circuit OR4 for self-holding, and the output terminal of the fourth AND circuit AN4 is connected to the input terminal of the second OR circuit OR2 as the output terminal of the direction selection circuit N. . and the first OR circuit
The output end of OR1 is connected to the first control unit 16 that outputs a door open or close signal based on this output,
The output end of the first control section 16 is connected to a first door driving device 17 that opens or closes the first door 1 based on the output of the open or close signal. Said second
The output end of the OR circuit OR2 is connected to the second control section 18 that outputs a door open or close signal based on this output, and the output end of this second control section 18 is connected to the output of this open or close signal. It is connected to a second door driving device 19 that opens or closes the second door 2 based on the following.

Next, the operation of the embodiment constructed as described above will be described.First, before explaining the overall operation, the operation of the direction selection circuit M will be explained with reference to the time chart shown in FIG. Third detection switch S ₃
If _the fourth detection switch _S4 is activated after the operation of The signal H is input to the circuit AN1, and the fourth detection switch _S4 outputs the signal H with a slight delay from the signal H of the _third detection switch S3, and this signal H is held for a set time _t1 by the delay timer _T1 . While the first
It is inverted in the not circuit NO1 and becomes the first AND circuit.
Input to AN1. Then, as shown in the diagram, this first
A signal H is output from the AND circuit AN1, and this output signal H is input to the second AND circuit AN2 via the third OR circuit OR3 while being held for a set time _t6 by the delay timer _T2 . The signal H from the 4-detection switch _S4 is held for a set time _t5 by a delay timer _T5 and is input to the second AND circuit AN2. At this time, the output of the second AND circuit AN2 is input to the input terminal of the third OR circuit OR3 and is self-maintained. Therefore, the second AND circuit AN2
The output signal H is output from the fourth detection switch _S4 through the delay timer _T5 until the signal H is outputted from the fourth detection switch S4. Next, when the third detection switch _S3 is activated after the fourth detection switch _S4 is activated, the fourth detection switch _S4 outputs a signal H, as shown in the time chart of FIG. 4b. , this signal H is held for a set time _t5 by a delay timer _T5 , inverted by the first NOT circuit NO1, and inputted to the first AND circuit AN1, while being input to the fourth AND circuit AN1.
After a slight delay from the signal H of the detection switch _S4 , the third detection switch _S3 outputs the signal H, and the first AND circuit AN
1 outputs a signal H, and this output signal H is held for a set time t ₆ by a delay timer T ₂ while the third
It is input to the second AND circuit AN2 via the OR circuit OR3. However, the signal H from the first AND circuit AN1 is sent to the second AND circuit AN2 as a delay timer.
When the signal H from the fourth detection switch S4 is inputted via _T6 and the third OR circuit OR3, the signal H from the fourth detection switch _S4 is input to the other input terminal of the second AND circuit AN2 for the set time _t5 of the delay timer _T5 . Since the signal is not inputted beyond this point, the second AND circuit AN2 does not output the signal. In this way, _the direction selection circuit M outputs the output signal H when the fourth detection switch S4 is activated after the third detection switch _S3 is activated, and the direction selection circuit M outputs the output signal H when the fourth detection switch _S4 is activated after the third detection switch S3 is activated. No output signal is output when S ₃ is activated. Further, the direction selection circuit N is basically the same as the direction selection circuit M, only that its output signal is reversed, so the explanation will be omitted, but the direction selection circuit M is connected to the fourth detection switch S ₄
When the third detection switch S3 is activated after the third detection switch _S3 is activated, an output signal H is output, and when the fourth detection switch _S4 is activated after the third detection switch _S3 is activated, no output signal is output.

Therefore, in Fig. 2, when a passing object comes from the direction X in the figure, when the passing object enters the detection area 10, the first detection switch _S1 is activated, and the signal H is sent to the delay timer _T1 for the set time. is input to the first OR circuit OR1 while being held, and the signal H is input to the first control unit 16.
is output, and the first control section 16 outputs an open signal. Based on this open signal, the first door driving device 1
7 is driven and the first door 1 is opened. When a passing object passes and the set time of delay timer _T1 has passed, no signal is output from delay timer _T1 , so the first
A closing signal is output from the control unit 16 to the first door driving device 17, and the first door 1 begins to close. At this time, when a passing object is near the first door 1, the safety switch 14 is activated, and the signal H is input to the first OR circuit OR1 while being held for a set time by the delay timer _T2 , and is sent to the first control unit. A signal H is output to the first control unit 1
6 outputs an open signal to drive the first door drive device 17 to keep the first door 1 open and ensure safety. Then, when the object passes through the first door 1, it passes from the detection area 12 of the fourth detection switch _S4 to the third detection switch S4.
Proceeding to the detection area 13 of S ₃ and arriving at position K ₁ ,
Since the third detection switch _S3 is activated after the fourth detection switch _S4 is activated, no signal is output from the second AND circuit AN2 of the direction selection circuit M as described above, so that the first control section 16 outputs no signal. The closing signal is output to the first door driving device 17 and the first door 1 is never opened. A signal H is output from the fourth AND circuit AN4 of the one-way sorting circuit N, and is input to the second control section 18 via the second OR circuit OR2.
Therefore, the second control unit 18 outputs an opening signal to the second door driving device 19, and the second door driving device 19 is driven to open the second door 2 in the traveling direction of the object (to the left in the figure). to open. At this time, the door is opened as much as possible before the passing body advances from the position _K1 to the second door 2, so that the object can pass through smoothly. Thereafter, when the object passes through the second door 2 and passes the detection area 11, the second door 2 begins to close. Next, in Figure 2, when a passing object comes from the Y direction in the figure, the object passes through the detection area 11, contrary to the case where it comes from the X direction mentioned above.
2, the second detection switch _S2 is activated, and the signal H is held by the delay timer _T3 for a set time and sent to the second control unit 18 via the second OR circuit OR2.
The second control unit 18 outputs an opening signal to the second door driving device 19, and the second door driving device 19 is driven based on this opening signal to open the second door 2. When a passing object passes and the set time of the delay timer T ₃ has passed, no signal is output from the delay timer T ₃ , so a close signal is output from the second control unit 18 to the second door driving device 19 and the second door 2 is closed. begins to close. At this time, when the object passing by is near the second door 2, the safety switch 15 is activated as in the case of the first door described above, and the signal H is held for the set time by the delay timer _{T4 and} is sent to the second door. The signal is input to the second control unit 18 via the circuit OR1, and the second control unit 18 outputs an open signal to drive the second door driving device 19 to maintain the second door 2 in the open state to ensure safety. . When the object passes through the second door 2 and advances from the detection area ₁₂ of the third detection switch S3 to the detection area 12 of the fourth detection switch _S4 and reaches position _K2 , the third detection switch _S3 is activated. After the activation, the fourth detection switch _S4 is activated, so as mentioned above, the signal H is output from the second AND circuit AN2 of the direction selection circuit M, and is sent to the first control unit 16 via the first OR circuit OR1. is input. Therefore, the first control unit 16 outputs an open signal to the first door driving device 17, and the first door driving device 17 is driven to open the first door in the traveling direction of the object (to the right in the figure). Open. At this time, the traffic object is located
Open as many doors as possible between K ₂ and the first door 1 to allow for smooth passage. Since no signal is output from the fourth AND circuit AN4 of the one-way sorting circuit N, a close signal is not output from the second control unit 18 to the second door driving device 19 to open the second door 2. Thereafter, when a passing body passes through the opened first door 1 and passes the detection area 10, the first door 1 starts to close. In this way, for objects passing through each door and proceeding into the windbreak room A, the detection area 13 of the third detection switch S3 and the detection area ₁₃ of the third detection switch S3 are detected.
The detection switch _S4 detects the direction of movement of the object in the detection area 12, and opens the door in the direction of movement early to allow the object to pass through smoothly, but does not give an opening signal to the door that has already passed. It is controlled to close as quickly as possible.

FIG. 5 shows another embodiment of the present invention, in which photoelectric switches 20 and 21 are used as equivalent to the third detection switch _S3 and the fourth detection switch _S4 in FIG. Photoelectric switches 20 and 21 are provided between the second door 2 and the second door 2 in a direction perpendicular to the direction of passage of objects (left-right direction in the figure), and these photoelectric switches 20 and 21 form detection areas 23 and 22, respectively. The embodiment shown in FIG. 5 basically operates in the same way as the embodiment shown in FIG. 2 described above, so a description thereof will be omitted. Note that various detection switches other than the photoelectric switch, such as a radio wave switch, a heat wire switch, and a pine switch, may be used.

Further, FIG. 6 shows a second embodiment of the present invention.
In the figure, detection area 1 is located in the traffic direction (left and right in the figure).
2 and 13 are simply placed side by side, whereas in Fig. 6, detection areas 24 and 25 are placed in the traffic direction (left and right in the figure).
They are arranged side by side with some overlap. This sixth
The embodiment shown in the figure basically has the same function as the embodiment shown in FIG. 2, so the explanation will be omitted.
In the case of this embodiment, the door can be opened early so that a passing object advancing into the windshield room A can pass through the door in the advancing direction more smoothly without waiting time. That is, when a passing object that has entered the windbreak room A through the first door 1 advances from the detection area 24 to the detection area 25, the second door 2 is opened at the position _L1 in the figure. The _second door 2
can be opened and the second door 2 can be smoothly passed through. Furthermore, when a passing object that has entered the windbreak room A through the second door 2 advances from the detection area 25 to the detection area 24, the first door 1 is opened at the position _L2 in the figure. It can be controlled to the position of the traffic object.
The first door 1 is opened while the vehicle advances from L ₂ to the first door 1, and the vehicle can pass through the first door 1 smoothly.

FIG. 7 shows the present invention applied to a case where there are three entrances and exits to a windbreak room, for example, one entrance leads into the building and the other two entrances lead to the outside. That is, the first door 1 and the 1st door 1'
leads to the outside, and the second door 2 leads to the inside of the building.
When a passing body passes between the first door 1 and the first door 1' and the second door 2, there is a Detection areas 30 and 31 are installed side by side in the direction of traffic (direction B in the figure), and detection areas 30 and 31 are installed in the windbreak room A between the first door 1' and the second door 2 in the direction of traffic (direction C in the figure). Detection areas 32 and 31 are arranged side by side, and its operation is basically the same as the embodiment shown in FIG. When the object passes from the detection area 32 to the detection area 31, the second door 2 is opened, and when the object passes from the detection area 31 to the detection area 30, the first door 1 is opened. 2 is opened, and when the vehicle advances from the detection area 31 to the detection area 32, the first 'door 1' is controlled to be opened. In this way, the control circuit for the entrances and exits of various windbreak rooms can be basically applied to the control circuit explained in FIG.

In each of the embodiments shown in FIGS. 2, 5, and 6, the detection areas 10, 10', and 11 are set outside the windbreak room A of each door 1, 2.
For example, as shown in FIG. 6, in addition to the detection areas 10 and 11, detection areas 26 and 27 are installed in parallel outside the windbreak room A of each door 1 and 2 to detect the direction of passing objects. By doing so, the door can be closed as quickly as possible after the passing body passes through the door from inside the windbreak room A to the outside, which further improves the situation. Alternatively, a photoelectric switch or the like may be used as each detection switch installed outside the windbreak room of each door. Furthermore, the sixth
As shown in the figure, in order to clearly define the passage area for passing objects in the windbreak room A, a passage wall 2 is installed along the passage direction.
8 and 29, the passing direction of the object can be reliably detected.

As is clear from the above, according to the present invention, two detection areas are provided in parallel between the doors in the windshield room in the direction of passage of objects passing through, and the operating order of the detection areas is used to detect objects passing through. Since the direction of movement of the vehicle is detected and the door in the direction of movement is controlled to be opened, objects passing through the door and entering the windbreak room are controlled to open without increasing the number of detection switches in the windbreak room. Once inside, the door through which it passed can be quickly closed, which has the advantage of improving the blocking effect of blocking ventilation between the inside and outside of the building. It has the advantage of being able to open the door in the direction in which it is moving, allowing objects passing through the windbreak room to pass smoothly.

[Brief explanation of drawings]

Figure 1 is a schematic diagram showing the configuration of a conventional windbreak room.
FIG. 2 is a schematic diagram showing the configuration of the windbreak room of the present invention,
3 is a control circuit diagram of FIG. 2, FIG. 4 is a time chart of the direction selection circuit M of FIG. 3, and FIG. 5 is a schematic diagram of a windbreak room showing another embodiment of the present invention. FIG. 6 is a schematic view of a windbreak room according to still another embodiment of the present invention, and FIG. 7 is a schematic diagram showing a windbreak room having three entrances and exits according to still another embodiment of the invention. 1...First door, 2...Second door, 10,11,1
2,13...Detection area, A...Windbreak room, M,
N...Direction selection circuit, _S1 , _S2 , _S3 , _S4 ...Detection switch.

Claims (1)

[Scope of Claims] 1. In a windbreak room provided at the entrance of a building, between one door and the other door of the entrance of the windbreak room,
A first detection area and a second detection area are arranged side by side in the direction of passage of a passing object, and when the passing object moves from the first detection area to the second detection area, the other door in the direction of movement is opened. and an automatic door control system for a windbreak room, which controls the one door in the direction of movement to be opened when a passing object moves from the second detection area to the first detection area. 2. The automatic door control system for a windbreak room according to claim 1, wherein the first detection area and the second detection area are arranged side by side with some overlap.