JPH0222837B2 - - 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. A detection area 3 and a detection area 4 are set for detecting objects passing by before and after the first door 1 (in the direction of traffic), and a detection area 5 for detecting objects passing by in front and behind the second door 2 (in the direction of traffic). and set the detection area 6. In addition, in order to ensure safety by preventing objects passing by from getting caught in the door, a safety switch is set so that the floodlight beams 7a and 8a are located near the doors inside and outside the windbreak room A of the first door 1. 7 and 8, and open the second door 2.
Safety switches 9 and 1 are set so that the floodlight beams 9a and 10a are located near the doors inside and outside of the windbreak room A.
Set 0. Then, when a passing object enters the detection area 3 or 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 1, and the safety switches 7 and 8 A passing body near the door is detected, and based on the detection signal, a door drive device is operated to keep the first door 1 open or in the open position so that the passing body is not caught in the door. The first door 1 begins to close after a certain period of time (a preset time) after this passing object passes through the first door 1 and leaves the detection area 4 or the detection area 3. Next, in the same manner as described above, the second door 2 detects when a passing body enters the detection area 5 or the detection area 6, and operates the door drive device (not shown) based on the detection signal, so that the second door 2 The safety switches 9 and 10 detect a passing object near the door, and operate the door drive device to open the second door 2 based on the detection signal so that the passing object is not caught in the door. Continue to hold it in the open or open position. The second door 2 begins to close after a certain period of time after this passing object passes through the second door 2 and leaves the detection area 6 or the detection area 5.

However, such a conventional door of the windbreak room A detects when a passing object enters the detection area 3, opens the first door 1, and then opens the first door 1 until the passing object passes and leaves the detection area 4. 1 Door 1 is kept fully open. However, as mentioned above, the purpose of a windbreak room is to block ventilation between the inside and outside of the building, so the door is opened as quickly as possible after the object passes through it, and in fact, after passing the safety switch for safety reasons. In this respect, conventional windbreak room doors had a problem in that they did not close immediately after a passing object passed through.

In addition, in order to solve the above-mentioned problem, the detection area 4 is
Alternatively, it is sufficient to prevent detection at step 6.To achieve this, it is sufficient to install a detection circuit capable of detecting directionality, which has been proposed in the past, but in this case, as shown by the dotted line in Figure 1, , a new detection area 11 is set adjacent to the detection area 4, a detection area 12 is set adjacent to the detection area 6, and when a passing object enters from the detection area 4 toward the detection area 11, The opening signal is not output to the door drive device of the first door 1, and the detection area 11
When a passing body enters the detection area 4 from the detection area 4, an open signal is output to the door drive device of the first door 1, and similarly for the second door 2 side, the detection area 12 is moved from the detection area 6 to the detection area 12. When a passing object approaches the detection area 6 from the detection area 12, an open signal is not output to the door drive device of the second door 2, and when a passing object approaches the detection area 6 from the detection area 12, the second door 2
A control circuit with a direction selection function may be configured so that an open signal is output to the door driving device.

However, in this configuration, the first door or the second
If a passing object passes through the door and enters the windbreak room, the door can be configured to close quickly, but the number of detection switches in each detection area of the windbreak room has been changed from 2 to 4.
A problem that multiplies each time arises.

Therefore, the present invention was made in view of the above-mentioned problems, and it reduces the number of detection switches in the windshield room, and from the viewpoint of safety, by using the conventionally installed safety switches, it is possible to The purpose is to close the door as quickly as possible after passing through the door, and the specific solution is to close the door as quickly as possible after passing through the door. A first detection switch and a second detection switch are arranged so that the detection areas are located near the windshield side) and along the running direction, and A third detection switch and a fourth detection switch are arranged so that the detection areas are located near the opposite side of the room) and inside (the side of the windshield room) and along the traveling direction, respectively, and the first detection switch The second detection switch, the third detection switch, and the fourth detection switch open the first door or the second door when a passing object is detected near the door travel to prevent the passing object from being caught by the door. When the second detection switch is activated after the first detection switch is activated due to the passage of a vehicle, the second door is opened and the third door is activated.
A windshield chamber configured to function as a direction selection operation switch that detects a predetermined direction of traffic and opens the door so that the first door is opened when the fourth detection switch is activated after the detection switch is activated. This is an automatic door control method.

The present invention will be explained below based on FIGS. 2 and 3. In FIG. 2, a first door 1 is provided at one entrance of a windbreak room A, and a second door 2 is provided at the other entrance. A detection area 15 is set outside the windbreak room A of the first door 1, and a detection area 16 is set outside the windbreak room A of the second door 2. Also, near the outside of the first door (opposite side to windbreak room A) and the first
The first detection switch 17 is installed so that the detection area 17a is located along the door 1, and the detection area 18a is located near the inside of the first door 1 (windshield room A side) and along the first door 1. The second detection switch 18 is installed so that the second detection switch 18 is located. Furthermore, a third detection switch 19 is installed so that the detection area 19a is located near the outside of the second door 2 (on the opposite side to the windbreak room A) and along the second door 2, and The fourth detection switch 20 is installed so that the detection area 20a is located near the inside (windshield room A side) and along the second door 2. Next, the control circuit in such a configuration will be explained based on FIG.
The detection switch 17 and the second detection switch 18 are
A second
An output end of the direction selection circuit Q is connected to a first control section M, and an output end of the first control section M is connected to a first door driving device 22 that drives the first door 1. Further, the first detection switch 17 and the second detection switch 18 are connected to the input end of a first direction selection circuit P, and the output end of the first direction selection circuit P is connected to the input end of a second control section N, which will be described later. are doing.

On the other hand, the detection switch 23, the third detection switch 19, and the fourth detection switch 20 for detecting the presence or absence of a passing object in the detection area 16 are connected to the input terminal of the second control section N, and furthermore, the above-mentioned first direction selection circuit The output end of P is connected to the input end of this second control section N, and the output end of this second control section N is connected to a second door driving device 24 that drives the second door 2. Further, the third detection switch 19 and the fourth detection switch 20 are connected to the input terminal of a second direction selection circuit Q, and the output terminal of the second direction selection circuit Q is connected to the input terminal of the first control section M described above. are doing.

The first control unit M includes a first OR circuit OR
The detection switch 21, the first detection switch 17, and the second detection switch 18 are connected to the input terminal of the first detection switch 1, and the output terminal of the second direction selection circuit Q is connected via an on-off delay type delay timer T1. The output end of the OR circuit OR1 is connected to the converter 25 via an off-delay type delay timer T2, and the converter 25 outputs an open or close signal to the first door driving device 22 as an output of the first controller M. It is. The second control unit N is the first control unit M described above.
Basically, they are the same, so to explain briefly, there is a detection switch 23,
The output end of the first direction selection circuit P is connected via the third detection switch 19, the fourth detection switch 20, and the on-off delay type delay timer T3.
The output end of the OR circuit OR2 is connected to the converter 26 via an off-delay type delay timer T4, and the converter 26 outputs an open or close signal to the second door driving device 24 as an output of the second controller N. It is.

The first direction selection circuit P is a first AND circuit.
The first detection switch 17 is connected to the input terminal of AN1, and the second detection switch 18 is connected to the NOT circuit.
Connect through NO1 and this first AND circuit AN
1 output terminal is on-off delay type delay timer T5
The second detection switch 18 is connected to the input terminal of the second AND circuit AN2, and the second detection switch 18 is connected to the input terminal of the second AND circuit AN2.
The output terminal of the first direction selection circuit P is connected to the second control section N as the output terminal of the first direction selection circuit P. The second direction sorting circuit Q is basically the same as the first direction sorting circuit P described above, so a brief explanation will be given as follows.
A fourth detection switch 20 is connected to the input side of the third AND circuit AN3 via a third detection switch 19 and a NOT circuit NO2, and an on-off delay type delay timer T6 is connected to the input terminal of the fourth AND circuit AN4. A configuration in which the output terminal of the third AND circuit AN3 is connected and the fourth detection switch 20 is also connected, and the output terminal of the fourth AND circuit AN4 is connected to the first control section M as the output terminal of the second direction selection circuit Q. It is.

Next, the operation of the embodiment configured as described above will be described. First, before explaining the overall operation, the operation of the first direction selection circuit P will be explained with reference to the time chart of FIG. 4. When the second detection switch 18 is activated after the first detection switch 17 is activated, the first detection switch 17 outputs the signal H and the first AND circuit The second detection switch 18 outputs a signal H later than the signal H from the first detection switch 17, which is inverted by the NOT circuit NO1 and input to the first AND circuit AN1.
Then, the first AND circuit AN1 outputs the signal H as shown in the figure.
is output and input to the second AND circuit AN2 while being held for a set time t5 by the delay timer T5.
Signal H from 8 is input. Then, the second AND circuit AN2 outputs a signal H. Next, when the first detection switch 17 is activated after the second detection switch 18 is activated, the time chart shown in FIG. The signal is the second AND circuit
When input to AN2, the second AND circuit AN
There is no signal from the second detection switch 18 input to the second detection switch 18. Therefore, no signal is output from the second AND circuit AN2. In this way, the first direction selection circuit P outputs an output signal to the second control section N when the second detection switch 18 is activated after the first detection switch 17 is activated, and the second detection switch 18 is activated. Even if the first detection switch 17 is activated after activation, no output signal is output to the second control unit N. Further, since the second direction sorting circuit Q is basically the same as the first direction sorting circuit P described above, a detailed explanation will be omitted.
When the fourth detection switch 20 is activated after the detection switch 19 is activated, an output signal is output to the first control unit M, and when the third detection switch 19 is activated after the fourth detection switch 20 is activated, the first
No output signal is output to the control unit M.

Therefore, in FIG. 2, when a passing object comes from the direction X in the figure, the detection switch 21 is activated when the passing object enters the detection area 15, and the signal is input to the first OR circuit OR1. OR circuit OR1
A signal is input to the converter 25 while being held for a set time by the delay timer T2, and an open signal is output from the converter 25 to the first door driving device 22 to drive it, and the first door 1 opens. While a passing object is near the first door 1 and the first detection switch 17 and the second detection switch 18 are operating, a signal is output to the first OR circuit OR1, so the conversion unit 25 is activated by the first door drive device. 22
It continues to output an open signal to. That is, the first
The detection switch 17 and the second detection switch 18 function as safety switches to prevent objects passing by from being caught in the first door 1, thereby ensuring safety. When the passing body passes and leaves the detection area 18a of the second detection switch 18, no signal is input to the conversion unit 25 after the set time of the delay timer T2, so the conversion unit 25 sends the signal to the first door driving device 22 to close the door. A signal is output and the first door 1 starts to close from the fully open position. Further, when a passing body passes, the first detection switch 17 is activated, and then the second detection switch 18 is activated, and these signals are input to the first direction selection circuit P.
Then, as described above, the first direction selection circuit P outputs a signal to the second control section N.
Then, the signal from the first direction sorting circuit P is input to the second OR circuit OR2 after the set time of the delay timer T3, and from this second OR circuit OR2, the signal is input to the second OR circuit OR2.
4, the signal is input to the converting unit 26 while being held for a set time, and the signal is input from the converting unit 25 to the second door driving device 24.
An open signal is outputted to drive the second door 2 to open it. When the second door 2 is opened and a passing body passes through the second door 2 and leaves the detection area 16, no signal is input to the second control unit N. Therefore, after the set time of the delay timer T4, the conversion unit 26 sends the second door driving device 24 to the second door driving device 24. A close signal is outputted to drive the second door 2 and begin to close it. Also, when a passing object passes through the second door 2, the third detection switch 1
9 and the fourth detection switch 20 are operated, and their signals are input to the second control section N, which continues to output an open signal to the second door drive device 24 in the same manner as described above. That is, the third detection switch 19 and the fourth detection switch 20 function as safety switches to prevent objects passing by from being caught in the second door 2, thereby ensuring safety.
Further, after the passing body activates the fourth detection switch 20, the third detection switch 19 is activated, so that a signal is sent from the fourth AND circuit AN4 of the second direction selection circuit Q to the first control unit M as described above. Since there is no output, the first door 1 will not open.

Next, in Figure 2, when a passing object comes from the Y direction in the figure, it is basically the same as when it comes from the X direction in the figure, so to briefly explain, the passing object enters the detection area 16. When the detection switch 23 is activated, the signal thereof is input to the second control section N, and the second control section N outputs an opening signal to the second door driving device 24 to drive it and open the second door 2. If a passing object is near the second door 2, the third detection switch 19 or the fourth
When the detection switch 20 is operating, the signal is input to the second control unit N, and the second control unit N continues to output an open signal to the second door drive device 24, that is, the third detection switch 19 and the fourth detection switch 20 function as safety switches to prevent passing objects from being caught in the second door 2. When the passing body passes and leaves the detection area 20a of the fourth detection switch 20, no signal is input to the second control unit N, so the second
A closing signal is output from the control unit N to the second door driving device 24, and the second door 2 begins to close. In addition, after the third detection switch 19 is activated due to the passing of a passing object, the fourth detection switch 19 is activated.
Since the detection switch 20 is activated, a signal is output from the second direction selection circuit Q to the first control section M as described above, and the first control section M outputs a signal to the first door drive device 22 after the time set by the delay timer T1. The first door 1 is opened by outputting an open signal. When a passing object passes through this opened first door 1 and leaves the detection area 15, the first
Since no signal is input to the control unit M, a close signal is output to the first door driving device 22 after the set time of the delay timer T2, and the first door 1 starts to close. Also, when a passing object passes through the first door 1, the first detection switch 17
, the second detection switch 18 is activated, and the first control section M
The first control section M continues to output an opening signal to the first door driving device 22, that is, the first detection switch 17 and the second detection switch 18 function as safety switches. Furthermore, since the first detection switch 17 is activated after the second detection switch 18 is activated, as described above, the first direction selection circuit P does not output a signal to the second control unit N. Door 2 will never open.

In this way, the first detection switch 17 and the second detection switch
The detection switch 18 functions as a safety switch that detects objects passing by near the first door and gives an open signal to the first door to prevent the object from being pinched by the door. It is designed to function as a direction selecting operation switch that detects the direction in which a body is passing and opens the other second door to the passing body entering the windshield room A. Further, the third detection switch 19 and the fourth detection switch 20 are safety switches that detect objects passing by near the second door and give an open signal to the second door to prevent the object from being pinched by the door. It also functions as a direction selecting operation switch that detects the direction in which a passing object passes through the second door and opens the other first door to the passing object entering the windbreak room A. It is.

In the embodiment shown in FIG. 2, detection areas 15 and 16 are set outside the windbreak room A of each door 1 and 2, but for example, as shown by chain lines in FIG.
In addition to the detection areas 15 and 16, detection areas 27 and 28 are arranged in parallel outside the windbreak room A of each door 1 and 2 to detect the direction of passing objects, for example, as shown in Fig. 2. For passers-by coming from the X direction, the first
Although the door 1 is opened, it is possible to not give an opening signal to the first door 1 for a passing object going in the Z direction in the figure, and for a passing object going out of the windshield room A. The door can be closed as quickly as possible after passing through the detection area 17a of the first detection switch 17. The same applies to the second door side.

As is clear from the above, according to the present invention, detection switches are provided near the inside and outside of the door of the windbreak room along the traveling direction, and these detection switches are used to prevent the door from pinching objects passing through. It can be used as a safety switch and as a direction selection switch that opens the other door by detecting the direction of movement of objects passing through depending on the activation order of each detection switch. The switch can be omitted, and if objects pass through the door and enter the windbreak room,
This has the advantage that the door that has passed through can be closed quickly, improving the blocking effect of blocking ventilation between the inside and outside of the building. By sending an open signal early to the vehicle, when the object approaches the other door, that door is already opened, allowing for smooth passage.

[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, and FIGS. 4a and 4b are time charts of the first direction selection circuit P of FIG. 3. 1...First door, 2...Second door, 17...First detection switch, 18...Second detection switch, 19...
...Third detection switch, 20...Fourth detection switch, 22...First door drive device, 24...Second door drive device, A...Wind shield room, P...First direction selection circuit, Q ...Second direction selection circuit.

Claims (1)

[Claims] 1. In a windbreak room installed at the entrance of a building, a first door and a second door are provided at the entrance of the windbreak room, and outside (opposite side of the windbreak room) and inside (side from the windbreak) of this first door are installed. A first detection switch and a second detection switch are arranged so that the detection areas are located near the windbreak room side) and along the running direction, and outside the second door (on the opposite side to the windbreak room). A third detection switch and a fourth detection switch are arranged so that the detection areas are located near the inside (windshield room side) and along the running direction, and the first detection switch and the second detection switch Alternatively, the third detection switch and the fourth detection switch can be used as safety switches to open the first or second door when a passing object is detected in the vicinity of the door and prevent the passing object from being caught in the door. The second door is opened when the second detection switch is activated after the first detection switch is activated due to the passage of a vehicle, and the second door is opened when the fourth detection switch is activated after the third detection switch is activated.
An automatic door control system for a windbreak room that functions as a direction selection switch that detects the predetermined direction of traffic and opens the door.