KR102511980B1 - Infrared safety sensor for automatic doors and method for controlling opening and closing of automatic doors using the same - Google Patents

Abstract

Disclosed are an infrared safety sensor for automatic doors capable of reducing power consumption and a method for controlling opening and closing of automatic doors using the same. An infrared safety sensor for an automatic door includes a displacement detection sensor attached to an automatic door that opens and closes within a door frame installed on a wall and outputting a displacement detection signal by detecting movement of the automatic door; an infrared transceiver for emitting infrared light and outputting an infrared signal as the infrared light is reflected by the reflector; and calculating the moving distance to the door frame based on the displacement detection signal, calculating the distance to the reflector based on the infrared signal, and requesting the door open in a wireless manner when a difference between the moving distance and the distance occurs during the door closing operation. contains the CPU. Accordingly, even without using a connection cable constituting the infrared safety sensor, emergency opening/closing operation control of the automatic door by the infrared safety sensor can be realized in a wireless manner, and power consumption can be reduced.

Description

Infrared safety sensor for automatic door and automatic door opening and closing control method using the same

The present invention relates to an infrared safety sensor for an automatic door and a method for controlling the opening and closing of an automatic door using the same, and more particularly, controls emergency opening and closing of an automatic door by an infrared safety sensor in a wireless manner even without using a connection cable constituting the infrared safety sensor. It relates to an infrared safety sensor for automatic doors that can be realized and reduces power consumption, and a method for controlling automatic door opening and closing using the same.

In recent years, automatic doors have become widespread not only in large buildings such as hotels and hospitals, but also in general shopping malls such as restaurants and supermarkets.

In general, in an automatic door system using an infrared sensing device, as shown in FIG. 1, a motion sensor device 20 for detecting when a person or object enters a certain area, and a motion sensor device 20 for detecting a person or object It is equipped with a safety sensor device installed to prevent the automatic door from closing when it is out of the area and does not pass through the door completely.

At this time, as shown in FIG. 1, the safety sensor device includes a light transmitter 60 mounted on one side of the automatic door and emitting infrared rays, and a light receiver 70 mounted on one side of the automatic door and receiving emitted infrared rays, It is composed of a controller 2 that controls the automatic door control box 30 according to the result of the detection signal received by the light receiving unit.

In this way, when a conventional infrared automatic door safety sensor is installed on an automatic door, it is inevitable to modify both sides of the automatic door to perforate the infrared emitting unit and the receiving unit to mount the infrared ray transmitter and receiver on the automatic door, and also the wiring connecting the connection cable of the transmitter and receiver to the controller, respectively. Since the work follows, manufacturing costs increase as well as more difficult and cumbersome problems in construction.

Focusing on this point, Patent Document 1, as the light transmitting and receiving elements used in the infrared light transmitter and light receiver are miniaturized, integrates them into one sensing head unit, mounts only on one side of the automatic door, and receives the emitted infrared rays again. By using a reflector that can be simply attached to the opposite side of the automatic door, the use of related parts such as connection cables constituting the infrared safety sensor is reduced, which not only reduces manufacturing costs, but also improves convenience when installed on automatic doors. An automatic door safety sensor device in which an infrared light transmitter and a light receiver are integrated has been provided.

However, since Patent Document 1 still uses a connecting cable, there is a construction hassle in that a hole must be formed in the wall frame where the automatic door is installed and a connecting cable must be inserted through the formed hole to connect to the controller.

Korean Registered Utility Model Publication No. 20-0440347 (2008. 06. 02.) (Infrared ray transmitter and receiver unit integrated automatic door safety sensor device) Korean Patent Publication No. 10-2020-0046868 (2010. 05. 07.) (automatic door safety control device by infrared safety sensor) Korean Patent Registration No. 10-2027638 (2019. 09. 25.) (Safety sensor using PIR motion sensor and automatic door system using it)

Therefore, the technical problem of the present invention is to focus on this point, and the object of the present invention is to realize the emergency opening and closing operation control of an automatic door by an infrared safety sensor in a wireless manner without using a connection cable constituting the infrared safety sensor, An infrared safety sensor for automatic doors capable of reducing power consumption is provided.

Another object of the present invention is to provide an automatic door opening and closing control method using the infrared safety sensor for automatic doors.

In order to realize the object of the present invention, an infrared safety sensor for an automatic door according to an embodiment is attached to an automatic door that opens and closes within a door frame installed on a wall, and detects movement of the automatic door and outputs a displacement detection signal. sensor; an infrared transceiver for emitting infrared light and outputting an infrared signal as the infrared light is reflected by the reflector; and calculating a moving distance to the door frame based on the displacement detection signal, calculating a distance from the reflector based on the infrared signal, and opening the door when a difference between the moving distance and the distance occurs during a door closing operation. It includes a CPU requesting in a wireless manner.

In one embodiment, the CPU may deactivate the infrared transceiver when a difference between the movement distance and the interval does not occur and the movement distance is smaller than a set value during the door closing operation. Here, the CPU may enter a slim state.

In one embodiment, the infrared safety sensor for an automatic door may further include an RF wireless transmitter for transmitting an open/close request signal of the automatic door to a controller that controls opening and closing of the automatic door. Here, when an abnormality occurs in the infrared transceiver, the CPU may transmit an emergency opening request to the automatic door to the automatic door controller when an impact is sensed through the displacement sensor. In addition, the CPU may transmit a request for emergency opening of the automatic door to the automatic door controller by the RF wireless transmitter when a difference between the moving distance and the interval occurs during the door closing operation.

In one embodiment, the CPU maintains a slim state in the door closed state, is activated when the displacement sensing signal is received, calculates the moving distance to the wall doorframe based on the displacement sensing signal, and transmits the displacement sensing signal If it is checked as the end of door opening based on the displacement detection signal, the movement distance to the door frame is calculated, the infrared transceiver and the RF wireless transmitter are activated, and if it is checked as the start of door closing based on the displacement detection signal, , calculating the movement distance to the door frame based on the displacement detection signal, calculating the distance to the reflector based on the infrared signal, calculating the difference between the movement distance and the distance, and generating the difference value If it is checked that the door is opened, the door opening is transmitted to the controller through the RF wireless transmitter, and if the difference value is not generated and the moving distance is checked as smaller than the set value, the operation of disabling the infrared transmitter and receiver and the RF wireless transmitter can be performed.

In one embodiment, the infrared safety sensor for an automatic door may further include a battery for supplying driving power to the displacement sensor, the infrared transceiver, the RF wireless transmitter, and the CPU.

In one embodiment, the infrared transceiver may be installed to face the door frame.

In one embodiment, the displacement detection sensor may include an acceleration sensor that measures acceleration according to the movement of the automatic door or an intensity of impact applied to the automatic door and outputs the displacement detection signal.

In one embodiment, the displacement detection sensor may include a gyro sensor that measures an angular velocity according to the movement of the automatic door and outputs the displacement detection signal.

In order to realize another object of the present invention described above, an automatic door opening and closing control method using an infrared safety sensor for an automatic door according to an embodiment includes the steps of (i) maintaining a slim state in a closed state; (ii) activating when a displacement detection signal is received and calculating a moving distance to the door frame of the wall based on the displacement detection signal; (iii) calculating a movement distance to the door frame based on the displacement detection signal and activating the infrared transceiver and the RF wireless transmitter when the door open is determined to be closed based on the displacement detection signal; (iv) If it is checked as the start of door closing based on the displacement detection signal, the movement distance to the door frame is calculated based on the displacement detection signal, each distance from the reflector is calculated based on the infrared signal, and the movement calculating a difference between the distance and the interval; (v) if it is checked that the difference value is generated, transmitting a door open request to the controller through the RF wireless transmitter; and (vi) deactivating the infrared transceiver and the RF wireless transceiver when it is checked that the difference value is not generated and the movement distance is smaller than a set value (eg, 10 cm).

In one embodiment, the automatic door opening and closing control method using an infrared safety sensor for an automatic door may further include, when it is checked that the difference value is not generated and the moving distance is smaller than a set value, the CPU entering a slim state. there is.

According to the infrared safety sensor for an automatic door and the automatic door opening and closing control method using the same, the emergency opening and closing operation control of the automatic door by the infrared safety sensor can be realized in a wireless manner without using the connection cable constituting the infrared safety sensor, and the power consumption can be reduced. savings can be made

1 is an exemplary view in which a conventional infrared safety sensor for an automatic door is installed in an automatic door opening and closing control system.
2 is a block diagram schematically illustrating an infrared safety sensor for an automatic door according to an embodiment of the present invention.
3 is a flowchart illustrating a method for controlling opening and closing of an automatic door using an infrared safety sensor for an automatic door according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, the present invention will be described in more detail. Since the present invention may have various changes and various forms, specific embodiments are illustrated in the drawings and described in detail in the text. However, it should be understood that this is not intended to limit the present invention to the specific disclosed form, and includes all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

Like reference numerals have been used for like elements throughout the description of each figure. In the accompanying drawings, the dimensions of the structures are shown enlarged than actual for clarity of the present invention.

Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. These terms are only used for the purpose of distinguishing one component from another. For example, a first element may be termed a second element, and similarly, a second element may be termed a first element, without departing from the scope of the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise.

In this application, terms such as "comprise" or "have" are intended to designate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features It should be understood that it does not preclude the possibility of the presence or addition of numbers, steps, operations, components, parts, or combinations thereof.

In addition, unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in the present application, they should not be interpreted in an ideal or excessively formal meaning. don't

2 is a block diagram schematically illustrating an infrared safety sensor for an automatic door according to an embodiment of the present invention.

Referring to FIG. 2 , an infrared safety sensor for an automatic door according to an embodiment of the present invention includes a displacement sensor 110, an infrared transceiver 120, an RF wireless transmitter 130, a CPU 140, and a battery 150. includes

The displacement sensor 110 is attached to an automatic door that opens and closes within a door frame installed on a wall, detects movement of the automatic door, and outputs a displacement detection signal. In this embodiment, the displacement sensor 110 may be an acceleration sensor or a gyroscope sensor.

When the displacement sensor 110 is an acceleration sensor, it measures the acceleration according to the movement of the automatic door or the strength of the impact applied to the automatic door and outputs it as a displacement detection signal. Meanwhile, when the displacement detection sensor 110 is a gyro sensor, an angular velocity according to movement of the automatic door is measured and output as a displacement detection signal.

The infrared transceiver 120 includes an infrared light emitting element 122 and an infrared light receiving element 124, emits infrared light, and outputs an infrared signal as the infrared light is reflected by the reflector. In this embodiment, the infrared transceiver 120 is installed facing the door frame. Accordingly, the existence of a person or an object that has not yet passed between the door frame and the automatic door can be recognized through the reflected infrared light.

The CPU 140 calculates the movement distance to the doorframe based on the displacement detection signal, calculates the distance to the reflector based on the infrared signal received from the infrared light receiving element 124, and calculates the movement distance and distance during the door closing operation. If there is a difference between the doors, door opening is requested wirelessly. In addition, the CPU 140 deactivates the operation of the infrared transceiver 120 and enters a slim state when the difference between the movement distance and the interval does not occur during the door closing operation and the movement distance is smaller than the set value.

The RF wireless transmitter 130 transmits a request signal for opening and closing the automatic door to a controller (not shown) that controls opening and closing of the automatic door.

The battery 150 supplies driving power to the displacement sensor 110, the infrared transceiver 120, the RF wireless transmitter 130, and the CPU 140.

In this embodiment, the CPU 140 maintains a slim state in the door closed state, and is activated when a displacement detection signal is received from the displacement detection sensor 110, and calculates the moving distance to the wall door frame based on the displacement detection signal. . In addition, the CPU 140 calculates the movement distance to the door frame based on the displacement detection signal when the door open is completed based on the displacement detection signal received from the displacement detection sensor 110, and the infrared transceiver 120 and RF The wireless transmitter 130 is activated. In addition, the CPU 140 calculates the movement distance to the door frame based on the displacement detection signal, calculates the distance to the reflector based on the infrared signal, and calculates the movement distance and Calculate the difference between intervals. In addition, when the CPU 140 checks that the difference value is generated, the door open is transmitted to a controller (not shown) that controls opening and closing of the automatic door through the RF wireless transmitter 130 . In addition, the CPU 140 performs an operation of inactivating the infrared transceiver 120 and the RF wireless transmitter 130 when it is checked that the difference value is not generated and the movement distance is smaller than the set value.

3 is a flowchart illustrating a method for controlling opening and closing of an automatic door using an infrared safety sensor for an automatic door according to an embodiment of the present invention.

Referring to FIG. 3 , the CPU 140 maintains a slim state, and the displacement sensor 110 maintains an active state (step S100). At this time, the infrared sensor and the RF wireless transmitter 130 maintain an inactive state. That is, since the components other than the displacement sensor 110, that is, the infrared sensor of the CPU 140 and the RF wireless transmitter 130 are in an inactive state, a state in which no power is consumed is maintained.

Subsequently, the CPU 140 checks whether or not the door opening operation starts (step S102).

When it is checked that the door opening operation starts in step S102, the CPU 140 activates the CPU 140 according to the displacement detection signal and measures the moving distance (step S104).

Subsequently, the CPU 140 checks whether or not the door opening operation is finished (step S106).

When it is checked that the door opening operation is finished in step S106, the CPU 140 calculates the movement distance according to the displacement detection signal (step S108).

Subsequently, the CPU 140 activates the infrared transceiver 120 (step S110).

Subsequently, the CPU 140 activates the RF wireless transmitter 130 (step S112). In this embodiment, after the CPU 140 calculates the moving distance, the infrared transceiver 120 is activated, and the RF wireless transmitter 130 is activated, as an example, but the order may be changed. And, the above operations may occur simultaneously.

Subsequently, the CPU 140 checks whether the door closing operation starts (step S114).

If it is checked that the door closing operation starts in step S114, the CPU 140 calculates the moving distance to the doorframe, calculates the distance to the reflector, and calculates the difference between the moving distance and the distance (step S116).

Subsequently, the CPU 140 checks whether a difference value is generated (step S118).

When it is checked that the difference value is generated in step S118, the CPU 140 transmits the door open request to the controller through the RF wireless transmitter 130 (step S120) and feeds back to step S116.

If it is checked in step S118 that no difference value has occurred, the CPU 140 checks whether or not the movement distance is smaller than the set value (step S122).

If it is checked in step S122 that the moving distance is not smaller than the set value, feedback is given to step S116, and if it is checked that the moving distance is smaller than the set value, the CPU 140 enters a slim state (step S124).

Subsequently, the CPU 140 deactivates the infrared transceiver 120 (step S126).

Subsequently, the CPU 140 deactivates the RF wireless transmission unit 130 (step S128) and feeds back to step S100. In this embodiment, after entering the CPU 140 into a slim state, the infrared transceiver 120 is deactivated, and the RF wireless transmitter 130 is deactivated as an example, but the order may be changed. And, the above operations may occur simultaneously.

As described above, according to the present invention, emergency opening and closing operation control of an automatic door by an infrared safety sensor can be realized in a wireless manner without using a connection cable constituting the infrared safety sensor, and power consumption can be reduced.

Although the above has been described with reference to the examples, those skilled in the art can variously modify and change the present invention without departing from the spirit and scope of the present invention described in the claims below. You will understand.

110: displacement sensor 120: infrared transceiver
130: RF wireless transmitter 140: CPU
150: battery

Claims (13)

Attached to an automatic door that opens and closes within a wall door frame installed on a wall, detecting the movement of the automatic door and outputting a displacement detection signal, measuring acceleration according to the movement of the automatic door and outputting the measured acceleration signal as the displacement detection signal a displacement sensor that essentially includes an acceleration sensor;
an infrared transmitting/receiving unit installed to face the wall door frame, emitting infrared light toward the wall door frame, and outputting an infrared signal as the infrared light is reflected by the reflector; and
Based on the displacement detection signal, the movement distance from the automatic door to the wall door frame is calculated, and the distance to the reflector is calculated based on the infrared signal, and a difference between the movement distance and the distance occurs during door closing operation. An infrared safety sensor for an automatic door, comprising a CPU requesting door opening in a wireless manner when the door is open. The infrared safety sensor for an automatic door according to claim 1, wherein the CPU deactivates the infrared transceiver when a difference between the movement distance and the interval does not occur and the movement distance is smaller than a set value during the door closing operation. . The infrared safety sensor for automatic doors according to claim 2, wherein the CPU enters a slim state. The infrared safety sensor for an automatic door according to claim 1, further comprising an RF wireless transmitter for transmitting an open/close request signal of the automatic door to a controller controlling the opening and closing of the automatic door. The automatic door according to claim 4, wherein, when an abnormality occurs in the infrared transceiver, the CPU transmits an emergency opening request for the automatic door to the automatic door controller when an impact is sensed through the displacement sensor. Infrared safety sensor. The infrared safety sensor for automatic doors according to claim 4, wherein the CPU transmits an emergency opening request for automatic doors to the automatic door controller through the RF wireless transmitter when a difference between the moving distance and the interval occurs during door closing operation. . The method of claim 4, wherein the CPU,
Maintain a slim state when the door is closed,
When the displacement detection signal is received, it is activated to calculate the moving distance to the wall doorframe based on the displacement detection signal;
When the door open end is checked based on the displacement detection signal, the moving distance to the wall door frame is calculated based on the displacement detection signal, and the infrared transceiver and the RF wireless transmitter are activated,
If it is checked as the door closing start based on the displacement detection signal, the movement distance to the door frame of the wall is calculated based on the displacement detection signal, the distance to the reflector is calculated based on the infrared signal, and the movement distance Calculate the difference between and the interval,
When it is checked that the difference value is generated, the door open is transmitted to the controller through the RF wireless transmitter,
The infrared safety sensor for an automatic door, characterized in that performing an operation of inactivating the infrared transceiver and the RF wireless transmitter when it is checked that the difference value is not generated and the moving distance is smaller than the set value. The infrared safety sensor for automatic doors according to claim 4, further comprising a battery supplying driving power to the displacement sensor, the infrared transceiver, the RF wireless transmitter, and the CPU. delete delete delete maintaining the CPU in a slim state in the closed state;
When an acceleration signal is measured according to the movement of the automatic door by an acceleration sensor attached to an automatic door that opens and closes within a wall door frame installed on a wall and an acceleration signal is received as a displacement detection signal, the CPU is activated and the automatic door is activated based on the displacement detection signal. and calculating a moving distance to the door frame of the wall;
When the door open end is checked based on the displacement detection signal, the CPU calculates the moving distance to the wall doorframe based on the displacement detection signal and activates the infrared transceiver and the RF wireless transmitter installed to face the wall doorframe. step of doing;
If it is checked as the door closing start based on the displacement detection signal, the CPU calculates the moving distance to the wall door frame based on the displacement detection signal, calculates each distance from the reflector based on the infrared signal, calculating a difference between the moving distance and the distance;
transmitting, by the CPU, a door open request to a controller through the RF wireless transmitter when it is checked that the difference value is generated; and
When it is checked that the difference value is not generated and the moving distance is smaller than the set value, the CPU deactivates the infrared transceiver and the RF wireless transmitter. method. 13. The method of claim 12, further comprising the step of allowing the CPU to enter a slim state when it is checked that the difference value is not generated and the moving distance is smaller than a set value. control method.

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