JP2000234475A - 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 such accident as a passerby is caught up in the door while traffic at the door is smooth when the traffic at the door is heavy. SOLUTION: An object detecting sensor which detects approach of a mobile body to a door is provided. Here, the door is opened according to the open signal from the object detecting sensor (S100), the door is closed when a specified open-hold time has passed (102) after the door is opened (S104), and when the open signal is inputted from the object detecting sensor during close operation of the door (S120), the open-hold time is extended (S124).

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 controlling the opening and closing of a door when the amount of traffic at the door is large, so that the passage of the door is smooth and a pedestrian is pinched by the door. The present invention relates to an automatic door opening / closing control device suitable for preventing such an accident.

[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 object such as a pedestrian has approached the door, and opens the door in response to a detection signal from the object detection sensor. In some cases, after the door has been fully opened, the door is closed after a certain opening holding time (for example, 3 [s]) has elapsed.

[0003]

However, in the conventional automatic door opening / closing control device, the door is closed after a fixed opening / holding time has elapsed.
When the amount of traffic at the door is large, the door opens and closes frequently, which not only gives many passengers the trouble of being stopped until the door is opened, but also causes the door to be blocked. . Also, if a pedestrian approaches the door opening / closing operation line after the elapse of the opening hold time, an accident such as a pedestrian being pinched by the door may occur depending on the timing. When there are many, there is a high possibility that such an accident will occur.

Therefore, the present invention has been made in view of such an unsolved problem of the prior art, and when the traffic volume at the door is large, the traffic at the door is made smooth. It is another object of the present invention to provide an automatic door opening / closing control device suitable for preventing an accident such as a passerby being pinched by a door.

[0005]

According to a first aspect of the present invention, there is provided an automatic door opening / closing control device according to the present invention, comprising a detecting means for detecting that a moving object has approached the door. A device that opens a door in response to a detection signal from the detection means, closes the door after the door has been completely opened, waits for a predetermined open holding time to elapse, and closes the door after the door is completely opened. When a detection signal is input from the detection means until the closing of the opening is completed, the opening holding time is extended.

With this configuration, when the moving body approaches the door with the door closed, the detecting means detects that the moving body has approached the door as a detection signal, The door is opened in response to the detection signal, and after the door is completely opened, the door is closed after a predetermined opening holding time has elapsed. In this case, if the detection signal is input between the time the door is fully opened and the time the open hold time elapses, the open hold time is extended, and as a result, the open hold time longer than usual elapses. Wait for the door to be closed. If a detection signal is input after the open hold time has elapsed and before the door is closed, the open hold time is extended, and the door is opened according to the detection signal. After the door has been completely opened, the door is closed after waiting for a longer open holding time than usual.

Therefore, when a moving object such as a pedestrian passes through the door continuously for a short period of time, the opening and holding time is extended each time. Therefore, when the amount of traffic at the door is large, the door is opened. The door will not open and close frequently. Here, the opening holding time may be extended when the detection signal is input once or more times from when the door is completely opened to when the closing of the door is completed. At this time, the detection signal may be extended by a predetermined time every time the detection signal is input, or may be extended by a time corresponding to the timing or the number of times the detection signal is input. Even if you enter it once,
What is necessary is just to extend in the same way.

According to a second aspect of the present invention, there is provided an automatic door opening / closing control device, comprising: detecting means for detecting that a moving body has approached the door; and opening the door in response to a detection signal from the detecting means. A device that opens and closes the door after a predetermined opening holding time has elapsed after the door has been completely opened, and includes control means for controlling opening and closing of the door based on a detection result of the detection means. The control means extends the open holding time when a detection signal is input from the detection means during a door closing operation.

With such a configuration, when the moving body approaches the door with the door closed, the detecting means detects that the moving body has approached the door as a detection signal, and the detecting means outputs the signal from the detecting means. The door is opened in response to the detection signal, and after the door is completely opened, the door is closed after a predetermined opening holding time has elapsed. In this case, when the detection signal is input during the door closing operation,
With the control means, the open holding time is extended,
The door is opened in response to the detection signal, and after the door is completely opened, the door is closed after an elapse of an opening holding time longer than usual.

Therefore, when a moving body such as a pedestrian passes through the door continuously for a short period of time, the opening holding time is extended each time. Therefore, when the amount of traffic at the door is large, the door is opened. The door will not open and close frequently. Here, the control means may be configured to extend the open holding time when the detection signal is input once or more times from when the door is completely opened to when the door is completely closed. When the detection signal is input multiple times, the open hold time may be extended by a predetermined time each time the detection signal is input, or the open hold time may be extended by a time corresponding to the timing or the number of times the detection signal is input. You may. It should be noted that, even when input is performed once, it may be extended in the same manner.

According to a third aspect of the present invention, there is provided the automatic door opening and closing control device according to the second aspect, wherein the maximum opening time which can extend the open holding time is set. In addition, the control means extends the open holding time within a range not exceeding the maximum extension time. With such a configuration, when the detection signal is input during the closing operation of the door, the control unit extends the open holding time within a range not exceeding the maximum extension time.

Therefore, when a moving body such as a pedestrian passes through the door continuously for a short period of time, the opening and holding time is extended each time, but it is not extended beyond the maximum extension time. The door will not stay open for a long time after the body stops passing through the door. Furthermore, in the automatic door opening and closing control device according to claim 4 of the present invention, in the automatic door opening and closing control device according to any one of claims 2 and 3, the control means may include: Resets the open hold time to the initial value.

With such a configuration, after the closing of the door is completed, the opening holding time is returned to the initial value by the control means. Therefore, when a moving object such as a pedestrian passes through the door continuously for a short period of time, the opening and holding time is extended each time, but the moving object does not pass through the door and the door is initially closed after the door is closed. Since the value is returned to the value, the door does not remain open for a long time after the moving object does not pass through the door.

[0014]

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 a 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, and is provided with a light emitting diode provided on the right side of the door 1 and a photo beam from the light emitting diode and provided on the left side of the door 1. When a moving object passes between these while constantly receiving the photo beam from the light emitting diode, the photo beam from the light emitting diode is blocked. Detects the approach of the moving object. When detecting the approach of a moving object, a photo beam signal is output.

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 1 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 motor 15 is driven and controlled via a motor drive circuit by a drive signal from a controller 20, which will be described later.
The signal is output to the controller 20 as a 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 external noise, a rectification 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 a power failure, drives a later-described battery supply circuit to replace a 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 circuits 51 and 52 for rectifying the current from the rectifier, a regulator 54 for transforming the output voltage of the rectifier circuit 52 to a predetermined voltage (for example, 5 [V]),
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 unit 51 rectifies the current transformed to a 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 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 driving 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 unit 55, a modulation circuit unit 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 controlling the opening and closing of the door 1, the CPU 72 activates a control program stored in a predetermined area of the ROM 74 and executes the door opening and closing control processing shown in the flowchart of FIG. It is supposed to run. FIG. 4 is a flowchart showing a door opening / closing control process. The door opening / closing control process is executed in response to an interrupt signal of the CPU 72 generated at predetermined intervals (for example, 2 [ms]). When the door opening / closing control process is executed by the CPU 72, as shown in FIG. The process proceeds to S100 to determine whether or not the door 1 is open and held. If it is determined that the door 1 is open and held (Yes), the process proceeds to step S102. Then, it is determined whether or not the opening holding time set as the time for opening and holding the door 1 has elapsed. The value of the open hold time is appropriately changed in a process to be described later.
[S]) is set.

If it is determined in step S102 that the release hold time has elapsed (Yes), the process proceeds to step S102.
The process shifts to step 104 to execute a closing process of the door 1 for controlling the power module 53 so as to close the door 1, to end a series of processes and return to the original process.
If it is determined in step 102 that the release hold time has not elapsed (No), a series of processing is terminated and the processing returns to the original processing.

On the other hand, if it is determined in step S100 that the door 1 is not in the state of being opened and held (No), the process proceeds to step S106 to determine whether or not the door 1 is closed and stopped. When it is determined that the door 1 is not closed and stopped (No), the process proceeds to step S108. In step S108, it is determined whether or not the door 1 is being closed. If it is determined that the door 1 is being closed (Yes), the process proceeds to step S110.
It is determined whether an internal signal or an external signal (hereinafter, referred to as an open signal) has been input from the object detection sensors 5 and 6, and when it is determined that the open signal has been input (Yes), the process proceeds to step S112. .

In step S112, a door 1 opening process for controlling the power module 53 to open the door 1 is executed, and the process proceeds to step S114 to set the opening holding time to a predetermined time (for example, 0.5 [s]). ]), And proceeds to step S116 to determine whether or not the release hold time has exceeded the maximum extension time (for example, 5 [s]), and when it is determined that the release hold time has exceeded the maximum extension time. (Yes)
Shifts to step S118, sets the release holding time to the maximum extension time, ends a series of processing, and returns to the original processing.

On the other hand, when it is determined in step S116 that the release holding time does not exceed the maximum extension time (No),
When it is determined in step S110 that no open signal has been input from the object detection sensors 5 and 6 (No), and when it is determined in step S108 that the door 1 is not being closed (No), either Also terminates the series of processing and returns to the original processing.

On the other hand, when it is determined in step S106 that the door 1 is closed and stopped (Yes), the process proceeds to step S120, and whether an open signal is input from the object detection sensors 5 and 6 is determined. If it is determined that the release signal has not been input (No), the process proceeds to step S122. In step S122, it is determined whether a predetermined time (for example, 2 [s]) has elapsed since the door 1 was closed and stopped, and it is determined that the predetermined time has elapsed (Yes).
Moves to step S124, returns the open holding time to the initial value, ends a series of processing, and returns to the original processing. However, in step S122, a predetermined time has elapsed since the door 1 was closed and stopped. If it is determined that the processing has not been performed (No), a series of processing is completed and the processing returns to the original processing.

On the other hand, when it is determined in step S120 that the release signals have been input from the object detection sensors 5 and 6 (Ye
In step s), the process shifts to step S126 to execute the opening process of the door 1 for controlling the power module 53 so as to open the door 1, terminates a series of processes, and returns to the original process. Next, the operation of the above embodiment will be described.

When power is supplied to the controller 20,
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
The control program is read from the ROM 74, and the door opening / closing control is started by executing the door opening / closing control processing based on the control program.

First, when a pedestrian approaches the door 1 from outside, for example, with the door 1 closed, the object detection sensor 5
As a result, the approach of the moving body to the door is detected as an external signal, and steps S100, S106, S120, S
Via 126, the door 1 is opened in response to an external signal from the object detection sensor 5. After door 1 is fully opened,
After steps S100 to S104, the door 1 is closed after the open holding time has elapsed. In this case, the open hold time is not extended and the initial value (3
[S]), the door 1 is closed when 3 [s] has elapsed since the door 1 was fully opened.

During the closing operation of the door 1, when a pedestrian approaches the door 1 from, for example, the indoor side, the object detection sensor 6 detects that the moving body has approached the door as an internal signal, and steps S100 and S106. Through steps S112 and S112, the door 1 is opened according to the internal signal from the object detection sensor 6, and the steps S100 and S106 are performed.
After step S114, the open hold time is added for a predetermined time (0.5 [s]). After the door 1 has been completely opened, the door 1 is closed after the opening holding time has elapsed. In this case, since the open holding time is extended to 3.5 [s] in step S114, the door 1 is closed when 3.5 [s] has elapsed since the door 1 was completely opened.

Subsequently, during the closing operation of the door 1, when a pedestrian approaches the door 1 from the outside, for example, the object detection sensor 5 detects that the moving body has approached the door as an external signal, and detects the object. The door 1 is opened according to an external signal from the sensor 5, and the opening holding time is added for a predetermined time. After the door 1 has been completely opened, the door 1 is closed after the opening holding time has elapsed. In this case, since the open holding time has been extended to 4.0 [s] in step S114, it is 4.0 after the door 1 is completely opened.
When [s] has elapsed, the door 1 is closed.

As described above, when a passerby passes through the door 1 continuously until the door 1 is completely closed, the opening holding time is extended each time, so that the amount of traffic at the door 1 is large. In some cases, the time during which the door 1 is open becomes longer, and the door 1 does not frequently open and close. On the other hand, if the passerby continuously passes through the door 1 until the closing of the door 1 is completed, the opening and holding time is extended to 5 [s], which is the maximum extension time. For example, when a person approaches the door 1 from the indoor side, the object detection sensor 6 detects that the moving body has approached the door as an internal signal, and the door 1 is opened according to the internal signal from the object detection sensor 6. At the same time, the open hold time is added for a predetermined time. However, as a result of the addition, the open hold time exceeds the maximum extension time, so that the open hold time is set to the maximum extension time via steps S116 and S118. For this reason, after the door 1 is completely opened, the door 1 is closed after waiting for the maximum extension time of 5 [s] to elapse.

As described above, when the passerby passes the door 1 continuously for a short time, the open holding time is extended each time, but the open holding time is not extended beyond the maximum extension time. Therefore, the door 1 does not remain open for a long time after the passerby stops passing through the door 1. On the other hand, during the closing operation of the door 1, the pedestrian does not approach the door 1, the closing operation of the door 1 is completed, the door 1 is closed and stopped, and the door 1 is closed and stopped for a predetermined time. When (2 [s]) has elapsed, the open hold time is returned to the initial value (3 [s]) through steps S100, S106, S120 to S124.
Therefore, when the door 1 is opened by a passerby approaching the door 1 next, the door 1 is closed when 3 [s] has elapsed since the door 1 was completely opened.

As described above, after the pedestrian stops passing through the door 1 and the closing of the door 1 is completed, the open holding time is returned to the initial value. The door 1 is not left open for a long time. Thus, in the present embodiment,
The door 1 is opened in response to the opening signals from the object detection sensors 5 and 6, and after the door 1 is completely opened, the door 1 is closed after a predetermined opening holding time has elapsed, and the door 1 is closed. When an opening signal is input from the object detection sensors 5 and 6 during the opening, the opening holding time is extended.

Therefore, when the traffic volume at the door 1 is large, the time during which the door 1 is open becomes longer, and the door 1 does not frequently open and close. When the traffic volume is large, it is possible to smooth the traffic at the door 1 and prevent an accident that a pedestrian is pinched by the door 1. Further, in the present embodiment, a maximum maximum extension time capable of extending the open holding time is set, and the open holding time is extended within a range not exceeding the maximum extension time. Therefore, it is possible to prevent the door 1 from being left open for a long time after the passerby stops passing through the door 1.

Further, in this embodiment, after the closing of the door 1 is completed, the open holding time is returned to the initial value. Therefore, it is possible to prevent the door 1 from being left open for a long time after the passerby stops passing through the door 1. In the above-described embodiment, an opening signal is input from the object detection sensors 5 and 6 during the closing operation of the door 1 from the start of the closing of the door 1 to the completion of the closing of the door 1. Sometimes, the opening holding time is configured to be extended. However, the present invention is not limited to this, and the time from when the door 1 is completely opened to when the closing of the door 1 is completed is completed.
When an open signal is input from the object detection sensors 5 and 6,
You may comprise so that an open holding time may be extended.

Further, in the above-described embodiment, a case has been described in which the control program stored in the ROM 74 is executed before executing the processing shown in the flowchart of FIG. 4. However, 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 reading 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 and 6 correspond to the detection means according to claim 1 or 2,
The CPU 72 corresponds to the control means according to claims 2 to 4, and the open signal, the external signal or the internal signal corresponds to the detection signal according to claims 1 or 2.

[0048]

As described above, according to the automatic door opening / closing control device according to claims 1 to 4 of the present invention,
As compared with the related art, when the amount of traffic at the door is large, the effect of smoothing the traffic at the door and preventing an accident that a pedestrian is pinched by the door can be obtained.

According to the automatic door opening / closing control device according to the third or fourth aspect of the present invention, it is possible to prevent the door from being left open for a long time after the pedestrian does not pass through the door. The effect of being able to do so is also obtained.

[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 opening / closing control process.

[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 (4)

[Claims] A detecting means for detecting that the moving body has approached the door, opening the door in response to a detection signal from the detecting means, and elapsing a predetermined opening holding time after the door has been fully opened. A door closing device that waits for the door to be closed, and when the detection signal is input from the detection means between the time the door is completely opened and the time the door is closed, the opening holding time is extended. An automatic door opening / closing control device characterized in that: A detecting means for detecting that the moving body has approached the door, opening the door in response to a detection signal from the detecting means, and elapse of a predetermined opening holding time after the door has been fully opened. 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 from the detection unit during a door closing operation. An automatic door opening / closing control device, wherein when a signal is input, the open holding time is extended. 3. The apparatus according to claim 2, wherein a maximum maximum extension time capable of extending the open hold time is set, and the control unit extends the open hold time within a range not exceeding the maximum extension time. An automatic door opening / closing control device characterized in that: 4. The automatic door according to claim 2, wherein the control unit returns the open holding time to an initial value after the closing of the door is completed. Opening and closing control device.