JP2000234474A - Opening/closing control device for automatic door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an opening/closing control device for an automatic door suitable for preventing a door from kept open when a detection sensor does not function correctly due to snow or stain, etc. SOLUTION: An object detecting sensor 7 is provide which detects a mobile body passing an open/close action line of a door 1. Here, when a photo-beam signal from the object detecting sensor 7 is continuously inputted for a specified time at completion of opening the door (S102), the door is closed while the opening of the door due to input of the photo-beam signal is prohibited (S110).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for controlling the opening and closing of a door, and more particularly to a device for keeping a door open when a detection sensor fails to function properly due to snow or dirt. The present invention relates to an automatic door opening / closing control device suitable for prevention.

[0002]

2. Description of the Related Art Conventionally, an automatic door opening / closing control device includes an object detection sensor for detecting that a moving body such as a pedestrian has approached the door, and when a detection signal is input from the object detection sensor, the door is opened. Those that are open are common. For example, in the case of a sliding door type automatic door in which both doors slide, this object detection sensor includes one each at the outside of the upper part of the door and substantially at the center of the indoor side, and on both sides of the door on the opening / closing operation line of the door One is provided.

[0003] The object detection sensor provided on the upper part of the door,
For example, a light reflection type optical sensor irradiates a light beam to a place slightly away from a door, and detects the approach of the moving object when the moving object enters the light beam.
The object detection sensors provided on both sides of the door are, for example, optical sensors, and a light emitting diode provided on the right side of the door and a photo sensor provided on the left side of the door so as to receive a photo beam from the light emitting diode. And a diode.The photodiode constantly receives the photo beam from the light emitting diode, and when the moving object passes between them, the photo beam from the light emitting diode is blocked. It detects the approach of the body.

[0004]

As described above, the conventional automatic door opening / closing control device is configured to open the door when a detection signal is input from the object detection sensor. There were the following problems when installed in rural areas. Usually, in the above-mentioned conventional automatic door,
Object detection sensors on both sides of the door are provided not on the indoor side but on the outside. For this reason, if there is a lot of snow, snow may fall on the light emitting diode or the photodiode of the object detection sensor, and the snow may obstruct the photo beam to the photodiode. Therefore, when there is a lot of snow, the door is difficult to close, and in the worst case, the door may remain open.

[0005] This is not limited to snow, and it is considered that the same phenomenon can occur when dirt such as rain or dust adheres to a light emitting diode or a photodiode.
Therefore, the present invention has been made by focusing on the unsolved problem of the conventional technology, and the door is kept open when the detection sensor does not function normally due to snow or dirt. It is an object of the present invention to provide an automatic door opening / closing control device suitable for preventing the above state from occurring.

[0006]

According to a first aspect of the present invention, there is provided an automatic door opening / closing control apparatus for detecting the presence of an object in a predetermined area of a door. Means for opening a door in response to a detection signal from the detection means, wherein when the detection signal from the detection means is continuously input for a predetermined time in a state where the door is completely opened, the door is opened. Is to be closed.

With such a configuration, for example, when a moving body such as a pedestrian approaches the door while the door is closed or during the door closing operation, the moving body approaches the door by the detecting means. Is detected as a detection signal, and the door is opened according to the detection signal from the detection means. On the other hand, when the door is opened and the door is completely opened,
When the detection signal from the detection means is continuously input for a predetermined time, the door is closed.

Therefore, if the detection means does not function properly due to snow or dirt, and the detection signal continues to be output, the door is closed. In such a case, the door remains open. Will not be.
Also, when a moving object such as a pedestrian passes through the door continuously for a short time, the detection signal from the detecting means is intermittent due to the interval with the pedestrian, so that the door may not be closed. Although it is difficult to imagine, it is preferable to set the predetermined time longer in order to more reliably prevent the door from closing in such a case. However, if the predetermined time is set too long, on the contrary, the door remains open for a long time when the detecting means stops functioning normally due to snow or dirt. In consideration of such circumstances, the predetermined time is preferably set to about 5 minutes.

The automatic door opening / closing control device according to claim 2 of the present invention further comprises a detecting means for detecting that an object is present in a predetermined area of the door, and the detecting signal from the detecting means is provided. And a control unit for controlling opening and closing of the door based on a detection result of the detection unit, wherein the control unit detects the detection from the detection unit in a state where the door opening is completed. When a signal is continuously input for a predetermined time, the door is closed.

With such a configuration, for example, when a moving body such as a pedestrian approaches the door while the door is closed or during the door closing operation, the moving body approaches the door by the detecting means. Is detected as a detection signal, and the door is opened according to the detection signal from the detection means. On the other hand, when the door is opened and the door is completely opened,
When the detection signal from the detection means is continuously input for a predetermined time, the control means closes the door.

Therefore, if the detection means stops functioning normally due to snow or dirt, and the detection signal continues to be output, the door is closed. In such a case, the door remains open. Will not be.
Also, when a moving object such as a pedestrian passes through the door continuously for a short time, the detection signal from the detecting means is intermittent due to the interval with the pedestrian, so that the door may not be closed. Although it is difficult to imagine, it is preferable to set the predetermined time longer in order to more reliably prevent the door from closing in such a case. However, if the predetermined time is set too long, on the contrary, the door remains open for a long time when the detecting means stops functioning normally due to snow or dirt. In consideration of such circumstances, the predetermined time is preferably set to about 5 minutes.

Further, according to a third aspect of the present invention, in the automatic door opening / closing control apparatus according to the second aspect, the control means detects the state in a state where the door opening is completed. When the detection signal from the means is continuously inputted for a predetermined time, the door is closed and the opening of the door by the input of the detection signal from the detection means is prohibited.

With such a configuration, when the detection signal from the detection means is continuously input for a predetermined time in a state where the door is completely opened, the control means closes the door and detects the detection signal. The opening of the door by the input of is prohibited. Further, the automatic door opening / closing control device according to claim 4 of the present invention is the automatic door opening / closing control device according to any one of claims 1 to 3, wherein the detecting means includes an object on a door opening / closing operation line. Is to be detected.

With such a configuration, for example, when a moving body such as a pedestrian passes on the door opening / closing operation line during the door closing operation, the detecting means moves the moving body along the door opening / closing operation line. The passage is detected as a detection signal, and the door is opened according to the detection signal from the detection means. On the other hand, when the detection signal from the detection means is continuously input for a predetermined time in a state where the door is opened and the door is completely opened, the door is closed.

For example, when the outside door and the indoor side are standing with the door interposed therebetween, in the conventional automatic door opening / closing control apparatus, the moving body is located outside the door and in a predetermined area on the indoor side. Since the object detection sensor that detects that the vehicle has entered the vehicle continues to output the detection signal, the door is not closed. This is, of course, desirable for those who are standing and talking. However, if the detection means is the object detection sensor in the automatic door opening / closing control device according to any one of claims 1 to 3, a predetermined period of time elapses when the outside and the indoor side of the door are standing and talking. Then the door may be closed. Therefore, if the detection means detects the presence or absence of an object on the door opening / closing operation line as in the automatic door opening / closing control device according to the third aspect, the door remains open due to snow or dirt. Of course, the door will not be closed in such a case.

According to a fifth aspect of the present invention, there is provided an automatic door opening / closing control apparatus according to any one of the first to third aspects, wherein the detecting means includes a light emitting means for emitting a photo beam. A light receiving means for receiving a photo beam from the light emitting means, wherein the light receiving means always receives the photo beam from the light emitting means while the light beam to the light receiving means is blocked. The light emitting means and the light receiving means are provided at the end of the door in the opening and closing direction.

With such a configuration, for example, when a moving object such as a pedestrian passes over the door opening / closing operation line during the door closing operation, the photo beam to the light receiving means is blocked, so that the detecting means As a result, it is detected as a detection signal that the moving body has passed over the door opening / closing operation line, and the door is opened in response to the detection signal from the detection unit. On the other hand, when the detection signal from the detection means is continuously input for a predetermined time in a state where the door is opened and the door is completely opened, the door is closed.

Therefore, as described in claim 4,
The door is not closed when the outside and the inside of the room are standing and talking with the door in between. In the above, a device for achieving the above object has been proposed. However, the present invention is not limited to this, and the following first to fifth automatic door opening / closing control methods can be considered to achieve the above object.

First, the first automatic door opening / closing control method is as follows.
A method of opening a door in response to a detection signal from a detection unit that detects the presence of an object in a predetermined area of a door, wherein the detection signal from the detection unit is determined in a state where the door is completely opened. When the time is input continuously, the door is closed. A second automatic door opening / closing control method is a method of opening a door in response to a detection signal from a detection means for detecting that an object is present in a predetermined area of the door. When the detection signal from the detection means is continuously input for a predetermined time in the completed state, a closing step of closing the door is included.

Further, the third automatic door opening / closing control method is the same as the second automatic door opening / closing control method, wherein the detection signal from the detecting means is continuously applied for a predetermined time in a state where the door opening is completed. And a prohibition step of prohibiting the opening of the door due to the input of the detection signal from the detection means. Further, a fourth automatic door opening / closing control method is the same as the first to third automatic door opening / closing control methods, wherein the detecting means detects the presence of an object on the door opening / closing operation line. Use

Further, a fifth automatic door opening / closing control method is the above-mentioned first to third automatic door opening / closing control methods, wherein the detecting means includes a light emitting means for emitting a photo beam; Light receiving means for receiving a photo beam, and wherein the light emitting means and the light receiving means are provided at an opening and closing direction end of a door, while the light receiving means constantly receives the photo beam from the light emitting means,
A device that detects the presence of an object when the photo beam to the light receiving unit is blocked is used.

[0022]

Embodiments of the present invention will be described below with reference to the drawings. FIGS. 1 to 4 are views showing an embodiment of an automatic door opening / closing control device according to the present invention. First, the configuration of the entire system of the automatic door opening / closing control device according to the present invention will be described with reference to FIGS. FIG. 1 is a front view of the automatic door, and FIG. 2 is a side view of the automatic door.

In these figures, a door 1 is of a sliding door type in which both doors slide, and a moving body such as a pedestrian approaches the door 1 outside the upper part of the door 1 and substantially at the center of the indoor side. Object detection sensors 5 and 6 for detecting
Similarly, an object detection sensor 7 for detecting that a moving body such as a pedestrian has approached the door 1 is provided on both sides of the door 1.

The object detection sensor 5 is, for example, a light reflection type optical sensor, and irradiates a light beam to a place slightly away from the door 1 as shown in FIG. 2, and the moving body enters the light beam. In some cases, the approach of a moving object is detected by outputting an external signal. Object detection sensor 6
Also, it is configured to have the same function as the object detection sensor 5, and is configured to output an internal signal to detect the approach of the moving body when the moving body enters the light beam.

The object detection sensor 7 is, for example, an optical sensor provided on the opening / closing operation line of the door 1 and on both sides of the door 1, and includes a light emitting diode provided on the right side of the door 1 and a light emitting diode. And a photodiode provided on the left side of the door 1 so as to be able to receive a photo beam. When a mobile object passes between these while constantly receiving the photo beam from the light emitting diode by the photodiode. Since the photo beam from the light emitting diode is blocked, the passage of the moving object is detected by this. Note that the object detection sensor 7 is provided not on the indoor side but on the outside, and outputs a photo beam signal when the passage of the moving body is detected.

On the other hand, in FIG. 1, a belt 13 is wound around a driving pulley 11 and a driven pulley 12, and the door 13 is connected to the belt 13. Drive pulley 1
1 is rotated forward and backward by a motor 15 to open and close the door 1 over a closed end and an open end. The drive of the motor 15 is controlled via a motor drive circuit by a drive signal from a controller 20 described later, and the encoder outputs the motor rotation speed to the controller 20 as a Hall IC signal.

Next, the configuration of the controller 20 will be described with reference to FIG. FIG. 3 is a block diagram showing a configuration of the controller 20. The controller 20 is provided, for example, at the center of the upper part of the door 1 and has a single-phase AC 100
A power supply unit 40 for inputting a power of [V] or 200 [V] to perform rectification and the like, and a control unit for driving with power from the power supply unit 40 input via the switching transformer 30 and controlling opening and closing of the door 1 50.

The power supply section 40 includes a noise filter 41 for removing noise from the power supply and extraneous noise, a rectifier circuit section 42 for full-wave rectifying a current from the power supply input via the noise filter 41, and a switching transformer 30. A switching unit 43 that performs switching at a predetermined frequency (for example, 100 [KHz]), a high / low voltage detection circuit unit 44 that detects whether the output voltage of the rectification circuit unit 42 is at a predetermined voltage level, and a rectification circuit. And a power failure detection circuit unit 45 for monitoring whether or not a power failure has occurred by monitoring the output voltage of the unit 42.

The high / low pressure detection circuit section 44 includes a rectification circuit section 42
When the output voltage of the rectifier circuit unit 42 is continuously detected for one second or more (high voltage detection) to be equal to or higher than a predetermined voltage (for example, 183 [V]), [V]), when it is continuously detected (low voltage detection) for one second or more, it is determined that the power supply voltage is abnormal, and a warning sound such as a buzzer is output.

The power failure detection circuit section 45 monitors the output voltage of the rectifier circuit section 42 with a photocoupler or the like and, when detecting that a power failure has occurred, drives a battery supply circuit to be described later to replace the power supply. Has become. The switching transformer 30 changes the output voltage of the rectifier circuit section 42 to a predetermined voltage by switching of the switching section 43.

The control unit 50 includes a switching transformer 30
Rectifier circuit units 51 and 52 for rectifying the current from the rectifier circuit, a regulator 54 for transforming the output voltage of the rectifier circuit unit 52 to a predetermined voltage (for example, 5 [V]), and the microcomputer 7
0 and the motor 1 under the control of the microcomputer 70
5, a battery charging circuit unit 55, a light receiving unit 56 for receiving an infrared signal from an external remote controller 90, a modulation / demodulation circuit unit 57 for modulating / demodulating a light receiving signal from the light receiving unit 56, and a remote controller 90. RS232C level conversion circuit unit 58 that can be connected to a signal line for performing communication with a signal line via a signal line, and a driver 59 that drives solenoid driving unit 100 under the control of microcomputer 70
And is composed of

The rectifier circuit section 51 rectifies the current transformed to the first predetermined voltage (for example, 140 [V]) by the switching transformer 30 and returns a part of the rectified current via the motor 15. Rectifier circuit 5
Numeral 2 rectifies a current transformed to a second predetermined voltage (for example, 24 [V]) by the switching transformer 30.

The power module 53 includes a rectifier circuit 51
The microcomputer 15 drives the motor 15 by controlling the current supplied to the motor 15 under the control of the microcomputer 70. The power module 53 is provided with a current detector 61 for detecting a load current value applied to the motor 15, and the current detector 61 transmits the detected load current value to the microcomputer 70 via a buffer 60b. Output.

The battery charging circuit unit 55 charges the externally provided NiCa battery 80 with the electric power from the regulator 54 when the power failure detection circuit unit 45 does not detect that the power failure has occurred. When the power failure is detected, the power stored in the NiCa battery 80 is supplied to the microcomputer 70.

When the door 1 is in a closed state, the solenoid drive section 100 drives a lock mechanism for locking the door 1 in that state.
Under the control of the microcomputer 70, the solenoid drive unit 100 is driven to lock the door 1 or unlock the door. The microcomputer 70 is driven by the power from the regulator 54,
A CPU 72 for controlling the calculation and the entire system based on a predetermined control program;
ROM 74 storing the control program of U72
And a RAM 76 for storing data read out from the ROM 74 and the like and operation results required in the operation process of the CPU 72.
And an I / F 78 that mediates data input / output with an external device
These are connected to each other via a bus 79, which is a signal line for transferring data, so that data can be exchanged.

The I / F 78 includes, as external devices, a power module 53, a current detector 61, an encoder built in the motor 15, a battery charging circuit 55, a modulation circuit 57, and an RS232C level conversion circuit. Part 58
, The driver 59, and the object detection sensors 5 to 7 are connected. However, the object detection sensors 5 to 7 are connected to the I / F 78 via the buffer 60a.

The CPU 72 comprises a microprocessing unit MPU and the like. When an external signal, an internal signal or a photo beam signal is inputted from the object detection sensors 5 to 7, the door 72 controls the power module 53 so as to open the door 1. After the opening process of the door 1 is executed and the opening of the door 1 is completed, a predetermined opening holding time (for example, 3
Waiting for [s]) to elapse, the door 1 is closed. When performing the door opening / closing control process (hereinafter referred to as a normal door opening / closing control process) and the closing control of the door 1 in response to the abnormality of the object detection sensor 7, the process is stored in a predetermined area of the ROM 74. The control program is started, and a door closing control process for coping with an abnormality shown in the flowchart of FIG. 4 is executed. FIG. 4 is a flowchart showing a door closing control process for dealing with an abnormality.

The door closing control process in response to an abnormality is executed in response to an interrupt signal of the CPU 72 generated at a predetermined cycle (for example, 2 [ms]).
When executed in step 2, as shown in FIG. 4, the process proceeds to step S100, where it is determined whether the door 1 is open and held, and the door 1 is opened and held. Is determined (Yes), the process proceeds to step S102, it is determined whether a photo beam signal is input from the object detection sensor 7, and if it is determined that the photo beam signal is input (Yes), Then, the process proceeds to step S104.

In step S104, a timer count process for counting up a timer counter for measuring the passage of time is executed. Specifically, this timer count process is to increment a timer counter, which is, for example, a 4-byte integer variable, by "1" each time the process is executed. Therefore, since the door closing control process is executed at a predetermined interrupt cycle, the elapsed time from the reference time (when the timer counter value is “0”) is obtained by multiplying the timer counter value by the interrupt cycle. Is calculated. This timer counter is cleared to "0" at the time of startup.

Next, the process proceeds to step S106, in which the elapsed time from the reference time is calculated by multiplying the value of the timer counter by the interruption period, and the elapsed time from the reference time is equal to or longer than a predetermined time (for example, 5 minutes). It is determined whether or not the elapsed time from the reference time is equal to or longer than a predetermined time (Y
es), the process shifts to step S108 to execute a closing process of the door 1 for controlling the power module 53 so as to close the door 1, and shifts to step S110.

In step S110, the object detection sensor 7
The opening of the door 1 due to the input of the photo beam signal is prohibited so that the opening process of the door 1 is not executed even if the photo beam signal is input from the CPU, the process proceeds to step S112, and the timer counter is cleared to "0". , A series of processes is terminated and the process returns to the original process. On the other hand, when it is determined in step S106 that the elapsed time from the reference time is not equal to or longer than the predetermined time (No), a series of processing is terminated and the processing returns to the original processing.

On the other hand, when it is determined in step S102 that a photo beam signal has not been input from the object detection sensor 7 (No), and in step S100, it is determined that the door 1 is not open and held. At this time (No), the process moves to step S112. Next, the operation of the above embodiment will be described.

When the controller 20 is powered on,
Power is supplied to the power module 53 via the noise filter 41, the rectifier circuit unit 42, the switching transformer 30, and the rectifier circuit unit 51, and the noise filter 41, the rectifier circuit unit 42, the switching transformer 30, the rectifier circuit unit 52, and the regulator Power is supplied to the microcomputer 70 via 54. When power is supplied to the microcomputer 70, the CPU 72
By performing the opening / closing control process of the door 1 in the normal state, the opening / closing control of the door 1 is started and the ROM 7 is opened.
The control program is read out from the control unit 4 and the door closing control process for dealing with abnormalities is executed based on the control program, so that the door 1 that deals with abnormalities of the object detection sensor 7 is handled.
Is started.

First, when each of the object detection sensors 5 to 7 is functioning normally, when the pedestrian approaches the door 1 from the outside, for example, with the door 1 closed, the object detection sensor 5 The approach of the body to the door 1 is detected as an external signal, and the input of the external signal causes the door 1 to be opened. After the opening of the door 1 is completed, the door 1 is closed after a predetermined opening holding time has elapsed.
When a pedestrian approaches the door 1 from outside, for example, during the closing operation of the door 1, the closing of the door 1 is stopped and the door 1 is closed.
Is released again.

Further, when the door 1 is closed or the door 1 is closed.
When the pedestrian approaches the door 1 from, for example, the indoor side during the closing operation of the door, the object detection sensor 6 detects that the moving body has approached the door 1 as an internal signal, and the input of the internal signal causes the door 1 to open. Be released. After the opening of the door 1 is completed, similarly, the door 1 is closed after a predetermined opening holding time has elapsed.

Further, if a pedestrian passes on the opening / closing operation line of the door 1 during the closing operation of the door 1, the object detection sensor 7 indicates that the moving object has passed on the opening / closing operation line of the door 1. The closing operation of the door 1 is stopped by the input of the photo beam signal, and the door 1 is opened again. After the opening of the door 1 is completed, similarly, the door 1 is closed after a predetermined opening holding time has elapsed.

As described above, when all of the object detection sensors 5 to 7 are functioning normally, the opening / closing control of the door 1 is performed in the same manner as the conventional one. When the object detection sensor 7 does not function normally due to snow or the like, as in the case where snow falls on the diode or the photodiode and the photobeam to the photodiode is blocked by the snow, the photodetection from the object detection sensor 7 is performed. Since the beam signal continues to be output, when the opening of the door 1 is completed by the input of the photo beam signal, the timer counter is counted up through steps S100 to S106, and the opening of the door 1 is completed. Is measured.

As a result, if the elapsed time from the completion of the opening of the door 1 becomes 5 minutes or more, the process proceeds from step S106 to step S106.
After 112, the door 1 is closed, and the opening of the door 1 by the input of the photo beam signal is prohibited so that the door 1 is not opened again by the input of the photo beam signal after the closing of the door 1 is completed. You. Therefore,
After the closing of the door 1 is completed, the object detection sensors 5, 6
The door 1 is opened by the input of an external signal or an internal signal from the camera, but the door 1 is not opened by the input of the photo beam signal from the object detection sensor 7.

As described above, in this embodiment, the object detection sensor 7 for detecting that the moving object has passed along the opening / closing operation line of the door 1 is provided. The door 1 is closed when a photo beam signal is continuously input for a predetermined period of time.
Therefore, when the object detection sensor 7 does not function normally due to snow or the like and continues to output a photo beam signal, the door 1 is closed. It is possible to prevent the state from being left as it is.

Further, in the present embodiment, the moving body passes on the opening / closing operation line of the door 1 instead of the object detection sensors 5 and 6 for detecting that the moving body has entered a predetermined area outside the door 1 and inside the room. The door 1 is closed only when a photo beam signal from the object detection sensor 7 is continuously input for a predetermined period of time only for the object detection sensor 7 that detects that the operation has been performed. Therefore, not only is it possible to prevent the door 1 from being left open due to snow and the like, but also, for example, when the outside and the indoor side are standing with the door 1 interposed therebetween, the door 1 is closed. Can be prevented.

Further, in the present embodiment, the photo beam signal from the object detection sensor 7 is continuously output between 5 minutes after the opening of the door 1 is completed and a relatively long time elapses. When input, the door 1 was closed.
Thus, for example, passers-by
, It is possible to reduce the possibility that the door 1 is accidentally closed.

In the above-described embodiment, as in the case where snow falls on the light emitting diode or the photodiode of the object detection sensor 7 and the photobeam to the photodiode is blocked by the snow, the object is detected by the snow or the like. The case where the sensor 7 does not function normally has been described. However, the present invention is not limited to this, and it is needless to say that the present invention can be suitably applied to a case where the object detection sensor 7 does not function properly due to dirt such as rain or dust. .

In the above embodiment, the door 1
When the photo beam signal from the object detection sensor 7 is input continuously for a predetermined time while the opening of the door 1 is completed,
Is closed and the opening of the door 1 due to the input of the photo beam signal is prohibited. Further, for example, after the opening of the door 1 due to the input of the photo beam signal is prohibited, the reset switch (not shown) By pressing, the setting to prohibit the opening of the door 1 by the input of the photo beam signal may be cancelled. For example, after prohibiting the opening of the door 1 by the input of the photo beam signal, the object detection is performed. When the photo beam signal from the sensor 7 is no longer input, the opening prohibition setting of the door 1 due to the input of the photo beam signal may be released.

In the above embodiment, the door 1
Not the object detection sensors 5 and 6 that detect that the moving body has entered the predetermined areas on the outside and the indoor side of the vehicle, but only the object detection sensor 7 that detects that the moving body has passed on the opening / closing operation line of the door 1. When the photo beam signal from the object detection sensor 7 is continuously input for a predetermined time, the door 1
However, the present invention is not limited to this, and the object detection sensors 5 and 6 are not limited to this, provided that they are provided in a location affected by snow and dirt. When the external signal, the internal signal, or the photo beam signal from the object detection sensors 5 to 7 is continuously input for a predetermined time, the door 1 may be closed.

Further, in the above-described embodiment, in executing the processing shown in the flowchart of FIG. 4, the case where a control program stored in advance in the ROM 74 is executed has been described, but the present invention is not limited to this. The program may be read from the storage medium storing the program indicating the procedure described above into the RAM 76 and executed.

Here, the storage medium is a semiconductor storage medium such as a RAM or a ROM, a magnetic storage type storage medium such as an FD or HD, an optical read type storage medium such as a CD, CDV, LD, or DVD, or an MO storage medium. A magnetic storage type / optical readout type storage medium includes any storage medium that can be read by a computer regardless of an electronic, magnetic, optical, or other read method.

In the above embodiment, the object detection sensors 5 to 7 correspond to the detecting means according to claims 1 to 3,
The object detection sensor 7 further corresponds to the detecting means according to claim 4 or 5, the CPU 72 corresponds to the control means according to claim 2 or 3, and the external signal, the internal signal or the photo beam signal corresponds to claim 1. 3 correspond to the detection signals.

[0058]

As described above, according to the automatic door opening / closing control apparatus according to the first to fifth aspects of the present invention,
As compared with the related art, an effect is obtained that it is possible to prevent the door from being left open when the detection unit does not function properly due to snow or dirt.

According to the automatic door opening / closing control device according to the fourth or fifth aspect of the present invention, for example, the door is closed when the outside and the indoor side are standing across the door. An effect is obtained that it can be prevented from being done.

[Brief description of the drawings]

FIG. 1 is a front view of an automatic door.

FIG. 2 is a side view of the automatic door.

FIG. 3 is a block diagram showing a configuration of a controller 20.

FIG. 4 is a flowchart showing a door closing control process for dealing with an abnormality.

[Explanation of symbols]

 1 door 5, 6, 7 object detection sensor 15 motor 20 controller 30 switching transformer 40 power supply unit 50 control unit 53 power module 70 microcomputer 72 CPU 74 ROM 76 RAM

Claims (5)

[Claims] 1. An apparatus for detecting a presence of an object in a predetermined area of a door, the apparatus being configured to open the door in response to a detection signal from the detection means, wherein the opening of the door is completed. An automatic door opening / closing control device, wherein the door is closed when a detection signal from the detection means is continuously input for a predetermined time in a state. 2. An apparatus for detecting the presence of an object in a predetermined area of a door, the apparatus being configured to open the door in response to a detection signal from the detection means, wherein a detection result of the detection means is provided. Control means for controlling the opening and closing of the door based on the control means, wherein the control means closes the door when a detection signal from the detection means is continuously input for a predetermined time in a state where the door is completely opened. An automatic door opening / closing control device characterized in that: 3. The control means according to claim 2, wherein when the detection signal from the detection means is continuously input for a predetermined time in a state where the door is completely opened, the control means closes the door and outputs the detection signal from the detection means. An automatic door opening / closing control device, wherein opening of a door due to input of a detection signal is prohibited. 4. An automatic door opening / closing control device according to claim 1, wherein said detecting means detects the presence of an object on a door opening / closing operation line. . 5. The light emitting device according to claim 1, wherein the light emitting device emits a photo beam.
Light receiving means for receiving the photo beam from the light emitting means, and the light receiving means always receives the photo beam from the light emitting means while the light beam to the light receiving means is blocked, An automatic door opening / closing control device for detecting the presence of the door, wherein the light emitting means and the light receiving means are provided at an end of the door in the opening / closing direction.