JP2746357B2 - Automatic door opening and closing control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic door opening / closing control device capable of taking noise countermeasures in response to changes in the surrounding environment.

[0002]

2. Description of the Related Art Generally, an automatic door is opened and closed by a DC motor or the like being driven forward or backward by an automatic door opening / closing control device. Then, the setting of the maximum speed at the time of opening and closing is performed in advance at the time of installation of the automatic door, and
After that, it is generally opened and closed at a constant speed without adjustment. In addition, from the viewpoint of safety, the closing speed of the automatic door is set to be slower than, for example, １ ／ of the opening speed, so that the automatic door is hardly caught by the automatic door.

[0003]

However, in the above-described conventional automatic door opening / closing control device, the opening / closing speed of the automatic door is constant regardless of nighttime or daytime. Is felt as noise,
In some cases, it caused a complaint. Such a tendency is remarkable in hospitals, nursing homes, and the like in which environmental problems are particularly important when a sick person recuperates. Accordingly, the present invention has been made in view of the above circumstances, and has an automatic door having a function capable of taking timely noise countermeasures according to a changing surrounding environment such as nighttime or daytime. It is intended to provide a control device.

[0004]

In order to achieve the above-mentioned object, the main means employed by the present invention is, in summary, an automatic means driven by a motor rotating at a speed set based on a speed command. In the door opening / closing control device, the amount of light from the outside of the automatic door has fallen below a predetermined value.
When the speed switching instruction means for outputting a speed change command signal to obtain switching <br/> the maximum speed slower ones of the automatic door,
An automatic door opening / closing control apparatus according to the above aspect, further comprising: speed changing means for changing a speed command to the motor in accordance with a command signal from the speed switching command means.

[0005]

In the automatic door opening / closing control device according to the above configuration, the speed command to the motor is changed in accordance with the command signal output from the speed switching command means, and the maximum speed when the automatic door is opened / closed is adjusted. . In this case, the command signal is output, for example, when the darkness around the installation location of the automatic door is felt, and the maximum speed at the time of opening and closing the automatic door is switched to a low speed side.

[0006]

Embodiments of the present invention will be described below with reference to the accompanying drawings to provide an understanding of the present invention. The following embodiment is an example embodying the present invention and is not intended to limit the technical scope of the present invention. FIG. 1 is a block diagram of an automatic door opening / closing control device according to an embodiment of the present invention, and FIG. 2 is a flowchart showing a processing procedure of the above-mentioned opening / closing control device. As shown in FIG. 1, in the automatic door opening / closing control apparatus 1 according to this embodiment, the automatic door 3 is driven by the DC motor 2 of the DC motor unit _2b . The switch control device 1 is controlled by the control unit 4 _a to the controller unit 4 comprising a microcomputer or the like and the central, open opening command or closing command of the automatic door 3 from the controller unit 4 is selectively output The mode is switched between the mode and the closed mode, and the speed command voltage to the DC motor 2 is changed according to a command signal from a speed switching command device 15 described later. That is, the open command or the close command is given to the rotation logic circuit 12, and the rotation direction of the DC motor 2 is determined. Then, the open command or the close command is given to the current limiter circuit 5, and the current limit value is set to a predetermined value. The speed switching command device 15 includes a photocell 16 for detecting light / dark based on the presence or absence of light around the installation location of the automatic door 3, an amplifier 17 for amplifying a signal from the photocell 16, and a preset speed. A comparator 18 compares a specified value with a signal from the amplifier 17 and outputs a speed switching command signal to the controller 4. The speed switching command device 15 according to this embodiment outputs a low speed switching command signal when an external light amount equal to or less than a predetermined value is detected. That is, during the daytime, the automatic door 3 is driven at the maximum speed at the time of normal opening and closing, and at nighttime, the automatic door 3 is driven at a lower speed. In this case, the speed switching command device 15 corresponds to speed switching command means for outputting a speed switching command signal for switching the maximum speed of the automatic door 3, and the controller unit 4 controls the speed switching command device 15.
Corresponds to speed changing means for changing the speed command of the DC motor 2 in response to a command signal from the DC motor 2.

The rotation of the DC motor 2 is detected by a rotor position sensor 11 composed of, for example, a magnetic Hall element or the like.
The waveform of the DC motor 2 is supplied to the comparator 8 via the speed amplifier circuit 13 as a detection signal of the rotational speed of the DC motor 2. Therefore, the high speed or low speed command output from the controller unit 4 is converted by the speed command voltage conversion circuit 7 into a voltage corresponding to the speed command. The speed amplifier circuit 13 is controlled by the comparator 8.
The rotation speed of the DC motor 2 is compared with the rotation speed of the DC motor 2 which is fed back via the PWM circuit 6, the base drive circuit 9, and the transistor inverter circuit 10 so that the DC motor 2 has the speed given by the speed command. Is done. In this embodiment, in both the open mode and the closed mode, the automatic door 3 is driven at a low speed based on a lower speed command signal at night than at daytime. In addition to the above cases, at night, only the speed in the open mode may be moved at the same low speed in accordance with the speed in the closed mode. The opening and closing speed of the automatic door 3 may be controlled by switching the speed to a low speed. The current value of the DC motor 2 whose rotation is controlled as described above is changed by the current limiter circuit 5 that controls the current according to the open command and the close command given by the controller unit 4 described above. That is, the power of the DC motor 2 is controlled so that the drive force of the automatic door 3 becomes smaller than the drive force in the open mode when the controller 4 switches to the closed mode by giving the close command. . Therefore, even if the automatic door 3 is closed in the closing mode, the automatic door 3 can be easily stopped by hand, so that safety can be improved. That is, in the automatic door 3 according to this embodiment, when the door is partially opened (or closed), the brake is applied to stop the movement once, and then the opening direction (or the closing direction) is slowly performed.
Is controlled to be driven. The temporary stop of the automatic door 3 is detected by monitoring the rotation of the DC motor 2 by the controller unit 4. Therefore, the detection pulse signal whose waveform has been shaped by the rotation logic circuit 12 is input to the controller unit 4 as a motor rotation signal.

The controller 4 monitors the motor rotation signal, and when no pulse is input for a certain period of time, determines that the DC motor 2 is stopped, and outputs a low speed command. Subsequently, referring to FIG. 2, the processing procedure of the automatic door 3 opening / closing control device 1 will be described in steps S1 and S1.
The description will be made in the order of 2,. First, when the presence of a person in front of the door is detected by a sensor such as a mat switch (S)
1) In S2, it is determined whether or not a speed switching command signal is output from the speed switching command device 15. When the speed switching command signal is output from the speed switching command device 15 and it is determined that the time is night, a low speed command is output from the controller unit 4 and the speed command voltage conversion circuit 7 outputs this speed command. And the DC motor 2 is driven at a low speed (S3). As a result, the automatic door 3 is gently driven at a low speed according to the surrounding environment at night. On the other hand, in S2, the speed switching command device 1
If it is determined that the speed switching command signal is not output from the automatic door 3, the opening command and the high speed command are output from the controller unit 4, and a full-power driving signal is output from the current limiter circuit 5. Are opened at high speed (S4). When the automatic door 3 is opened to the predetermined position, the contact 14 (see FIG. 1) of the position sensor is turned on (S5), and a brake command is given from the controller unit 4 to the base drive circuit 9 to perform brake control (S6). ). The stop of the rotation of the DC motor 2 by this brake is detected by the controller unit 4 monitoring the motor rotation signal as described above (S7). The controller unit 4
Outputs an open command when the rotation stop of the DC motor 2 is detected, and switches the speed command to a lower speed and outputs it. Thereby, the automatic door 3 is opened at a further lower speed (S
8). When the automatic door 3 is completely opened and the DC motor 2 is stopped, a door stop is determined by a signal from a limit switch or the like (not shown) (S9), and the controller 4 switches to the closed mode.

After a lapse of a predetermined time from the fully open state, the controller 4 issues a closing command and a high speed (meaning high speed in the closing mode, and numerically a value of 1/2 of the value in the opening mode, In the case of night, a lower speed command is output, and the input current is controlled by the current limiter circuit 5 so that the motor power becomes smaller than in the open mode described above. Is driven (S10). By performing such control, even in the case of being caught by the door that is closing in the closing mode, the hand can be easily stopped by hand, thereby improving safety. The following steps S11, S12, ...,
S15 is the same as steps S5, S6,..., S9, respectively, and thus description thereof is omitted. However, the rotation direction, the motor power, and the motor rotation speed of the DC motor 2 are different from those in the open mode. As described above, in the opening / closing control device 1 according to the present embodiment, the automatic door 3 is driven at an appropriate moving speed in consideration of the influence of the surrounding environment. It is possible to suitably cope with an installation place where the operation is performed. Further, the scope of application is not limited to hospitals and the like, and is also suitable, for example, in nursery schools where nap times are provided, and particularly in offices where quietness is required.

[0010]

According to the present invention, there is provided an automatic door opening / closing control device driven by a motor rotating at a speed set based on a speed command as described above.
A speed switching command means for outputting a speed switching command signal for switching the maximum speed of the automatic door to a lower speed when the amount of light from the light source becomes a predetermined value or less, and a command signal from the speed switching command means. and characterized by being provided with a speed varying means for varying a speed command to the motor, because it is close control system for an automatic door, for example at night
When the surroundings become dark , the maximum speed at the time of opening and closing the automatic door is controlled to change the speed to a lower speed, so that noise countermeasures can be taken as appropriate.

[Brief description of the drawings]

FIG. 1 is a block diagram of an automatic door opening / closing control device according to an embodiment of the present invention.

FIG. 2 is a flowchart showing a processing procedure of the opening / closing control device.

[Explanation of symbols]

1 ... opening and closing control unit 2 ... DC motor 2 _b ... DC motor unit 3 ... automatic door 4 ... controller (speed changing means) 4 _a ... control unit 15, 19 ... speed change command device (speed changing command means) 16 ... Images Cells 17, 21 ... Amplifiers 18, 22 ... Comparators 20 ... Microphones

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-59-61679 (JP, A) JP-A-62-244993 (JP, A) JP-A-7-91140 (JP, A) JP-A-7-91 139260 (JP, A) Actually open 61-137770 (JP, U)

Claims (1)

(57) [Claims] In an automatic door opening / closing control device driven by a motor that rotates at a speed set based on a speed command, when an amount of light from outside the automatic door falls below a predetermined value.
Come, the speed of the speed switching instruction means for outputting a slower <br/> Ru speed switching command signal switched to those of maximum speed of the automatic door, according to a command signal from the speed change command means to said motor An automatic door opening / closing control device comprising: a speed changing means for changing a command.