KR102027638B1 - PIR Motion Detection Sensor, and Safety Sensor and Automatic Door System using the PIR Motion Sensor - Google Patents

Abstract

The present invention utilizes a pyroelectric infrared (PIR) sensor (3), a novel sensing consisting of a Fresnel lens (2), a signal amplifier (4), a motion determination unit (5) and a lens window (6) It relates to a pyroelectric (PIR) motion detection sensor 30 that can be adjusted freely by introducing the area adjusting unit (1). As an example of the application of the motion sensor, the scope of application is expanded to the safety sensor and the upper sensor of the automatic door system including the screen door. When the door 12 is closed in an automatic door, a person, an animal, or an object in an area in which the door 12 moves in a state where the door 12 is not completely closed or in a safety sensor detection area 17 in which the door may be moved may feel a danger. When the movement of the detection of the pyroelectric infrared (PIR) safety sensor (7) to inform the automatic troubleshooter 18 of the movement and the automatic door system having the same. By using pyroelectric infrared (PIR) sensor (3), there is no malfunction in sunlight or illumination light, and it can detect a large sensing area, so safe automatic door operation is possible. . In addition, by introducing the detection area adjusting unit 1 composed of the lens window 6, the safety sensor detection area 17 can be freely adjusted, and can be customized to various places. The advantages of the safety sensor also apply to the upper sensor.

Description

Safety sensor using PIR motion detection sensor and automatic door system using same {PIR Motion Detection Sensor, and Safety Sensor and Automatic Door System using the PIR Motion Sensor}

The present invention relates to a pyroelectric (PIR) motion detection sensor using a pyroelectric infrared (PIR) sensor, an automatic door safety sensor and an upper sensor using the same. When the door is closed, the safety sensor of the automatic door detects that there is an obstacle near the moving area or area to prevent the door from closing and sends a signal to the automatic problem machine to open the door. It is a sensor that sends a signal to the automatic troubleshooter to open the door when it is detected and approached. In order to solve the problems of the existing safety sensor and the upper sensor, the invention is intended to use the PIR (PIR) motion sensor as a Pyroelectric (PIR) safety sensor and PIR upper sensor. The PIR safety sensor of the present invention can detect not only the area in which the door moves but also the area in which the door moves. In addition, in the case of the pyroelectric upper sensor of the present invention, the upper sensor serves as a safety sensor function.

Before describing the present invention, it is intended to define the automatic door used here. Automatic doors here include moving doors (including wood, glass, and steel doors) that can block or open passages for people, animals, cars, trains, and objects. It is composed of automatic problem breaker, which is an electric device that can be operated by other power, and means all automatic doors that can automatically open or close the door according to various electrical signals including push switch or automatic door upper sensor. And automatic door and automatic door system have the same meaning. Representative automatic doors include automatic doors of buildings, screen doors of subways, doors of elevators, garage doors of vehicles, and the like, and include all doors that open and close left and right or up and down including the doors.

Automatic doors are widely used in office buildings, large retail stores, hospitals, restaurants, government offices, apartments, etc. for convenience of customers, convenience of access control, and energy saving. It is also widely applied to subway screen doors, elevator doors, and garage doors of vehicles. Due to the above convenience, as the installation is increased, it is exposed to various situations, and safety accidents due to malfunction of automatic doors are increasing by various causes. The automatic door is equipped with a safety device equipped with a sensor to prevent such a safety accident, but most of the existing sensor is a safety beam sensor using near infrared rays, due to the limitations of the near infrared sensing itself, Malfunctions occur due to various factors such as external light such as illumination light, detection blind spots that the detection area cannot reach, dust accumulated in the infrared ray transmitting sensor or infrared ray receiving sensor, and many safety accidents occur. have.

Referring to the cause of the above-mentioned safety accident with reference to [Figure 1] as follows.

1 is a conceptual diagram showing a conventional automatic door system in which a conventional safety beam sensor 23 is installed. Referring to Figure 1, it will be described for the automatic door used in the conventional subway screen door. The automatic door is an automatic problem machine (18), the door 12 is connected to the automatic problem machine (18), the push switch (25) as a means for opening the door or the automatic door upper sensor for detecting the access of people or objects, and the door It is composed of a safety sensor to prevent the door and the risk of collision with people, animals or objects when closed. The safety sensor is mainly used a safety beam sensor 23 composed of an infrared ray transmitting sensor 8, an infrared ray receiving sensor 9, and a safety beam controller 10. The automatic door upper sensor detects a person or an object approaching the door 12 using a microwave, near infrared, or pyroelectric infrared (PIR) sensor (3), and sends a signal to the automatic problem machine (18) to open the door. Note is a sensor. The automatic door upper sensor detects whether a person or object is approaching at all times, whether the door is closed or open, and informs the automatic door controller 18. Therefore, the automatic door is pressed when the push switch 25, or when the upper sensor is installed, the door is opened when the upper sensor tells the automatic door controller 18 whether the person or object access. The automatic door upper sensor used at this time generally does not detect people or objects near the door (12). In order to compensate for this, the safety beam sensor 23 is additionally provided to prevent the collision with the door by detecting the presence of a person or an object in the safety beam sensor 23 detection area when the door is closed. Here, the safety sensor detection area 17 refers to an area that is determined to be dangerous when a door of the automatic door is closed and a collision is possible, or even if a movement of a person or an animal is detected even if it does not collide. Referring to FIG. 1 again, the safety beam sensor 23 has an infrared ray transmitting sensor 8 for irradiating infrared rays on one side of the door frame, and an infrared ray receiving sensor 9 for receiving infrared rays on the other side of the door frame. If the infrared rays irradiated by the infrared ray transmitting sensor 8 do not reach the infrared ray receiving sensor 9 without being completely closed, it is determined that there is an obstacle such as a person or an object, and the door 12 that is closed is opened again to prevent human or animal. Avoid hitting this door.

 The output signal of the safety beam sensor 23 is output to the automatic troubleshooter 18. When the door is completely closed, the automatic troubleshooter outputs a motion signal of a person or an object to the automatic troubleshooter 18 even when the door is completely closed. 18 disregards the output signal, stops and reopens the closed door by receiving the signal from the safety beam sensor 23 only when the door is not completely closed to prevent the door 12 from colliding with a person or an object. do.

However, the safety beam sensor 23 has a possibility of malfunction due to various causes. First, there is a possibility of malfunction due to sun light or illumination light (20). The safety beam sensor 23, when there is an obstacle between the moving door, the irradiated infrared light does not reach the infrared receiver 9, but when the amount of infrared rays entering the infrared receiver 9 is significantly reduced, there is an obstacle. Judging by the principle of stopping and reopening the door, it acts as a safety sensor. However, the safety beam sensor 23 of the obstacle detection method using near infrared ray basically uses near infrared ray in the wavelength band between 850 nm and 950 nm, and the near infrared ray is included in the wavelength band of sunlight or illumination light 20, so that sunlight or near infrared ray If the light comes around, it may malfunction.

Second, there is a possibility of malfunction if there is a reflector present on the bottom surface 19. When the sensor is installed near the floor, when a material having high reflectance is laid on the floor, sunlight or illumination light 20 is reflected and transmitted to the infrared receiver 9, so that there is an obstacle between the doors, but it is reflected on the floor. Due to the infrared rays coming into the infrared receiving sensor 9, the door is closed incorrectly because there is no obstacle, a malfunction may occur that a person hits the door. Due to this problem, the safety beam sensor 23 should be installed by raising a predetermined height or more from the floor.

Third, the safety beam sensor 23 should be installed on both sides of the automatic door 12, the infrared ray transmitting sensor 8 and the infrared ray receiving sensor 9, respectively, the infrared ray transmitting sensor 8 and the infrared ray receiving sensor 9 It works fine when the heights match. In this case, there is a fundamental detection area problem in using the safety beam sensor 23 as a safety sensor. The existing safety beam sensor 23 connecting the infrared ray transmitting sensor 8 and the infrared ray receiving sensor 9 passes infrared rays. It only detects the line area. That is, if there is a part of the human body or an object in a region other than the linear region connecting the infrared ray transmitting sensor 8 and the infrared ray receiving sensor 9, a problem may occur.

In order to solve this problem, when installing several safety beam sensors 23, the infrared rays emitted from the infrared ray transmitting sensor 8 of another safety beam sensor 23 adjacent to the infrared ray receiving sensor 9 of the other safety beam sensor 23 are installed. There may be a case of malfunction due to irradiation, it is impossible to install close enough close to install a certain interval, so there is a detection blind area that does not detect as much as the spaced interval. In this case, when there is an obstacle between the installed infrared sensors, a problem arises that the obstacle cannot be detected. The case of the screen door is a case of using a plurality of safety beam sensor 23, even recently, the hand is caught in the screen door due to the passenger's hand between the safety beam sensor 23, the accident occurred.

In addition, when dust or foreign matter accumulates on the surface of the infrared ray transmitting sensor 8 or the infrared ray receiving sensor 9, dust or foreign matter accumulated on the infrared ray transmitting or receiving sensor does not reach the infrared ray receiving sensor 9 in an appropriate amount. For example, a malfunction may occur in which the door may not be closed despite the absence of obstacles between the doors.

Accordingly, in order to solve the above problems, a pyroelectric motion sensor using a pyroelectric infrared (PIR) sensor (3) is to be invented.

An object of the present invention is to solve the problems of the prior art described above, by using a pyroelectric infrared (PIR) sensor that uses a wavelength band irrespective of sunlight or illumination light to prevent malfunctions caused by sunlight or illumination light. The present invention provides a preventable pyroelectric (PIR) motion sensor and provides a pyroelectric (PIR) safety sensor, a pyroelectric (PIR) upper sensor and an automatic door system using the motion sensor.

It is still another object of the present invention to provide a conventional PIR motion sensor comprising a Fresnel lens, a pyroelectric infrared sensor, a signal amplifier for amplifying a signal, and an amplified signal. It is composed of a motion determining unit for detecting a motion. Fresnel lens detection area is impossible to adjust the detection area when the Fresnel lens is determined, it is difficult to cope with various detection areas. Each time the detection area is changed, a new Fresnel lens has to be manufactured, which costs a lot of cost and time. As shown in Fig. 3, the motion determination unit also has a fixed motion determination standard, which may cause a malfunction if the external environment changes. Therefore, in the PIR motion sensor according to the present invention, the detection area of the motion sensor can be freely adjusted by adding a detection area adjustment unit including one or more lens windows in front of the Fresnel lens. In addition, the motion judgment unit is intended to reduce the malfunction caused by environmental changes by enabling the movement judgment criteria to be changed according to the environmental changes.

In addition, the present invention is a pyroelectric type (PIR) that is prevented from malfunctioning by the presence of an infrared ray transmission unit is detected that the near infrared rays transmitted by the dust or foreign matter is blocked, or the external near infrared rays are detected by the reflector present on the floor is prevented from malfunctioning. The present invention provides a pyroelectric safety sensor using a motion sensor and an automatic door system using the same.

Another object of the present invention, as shown in Figure 2, in the case of the conventional safety beam sensor does not detect all the moving area of the door, only a linear area of the detection, there are a lot of detection blind area that can not detect To solve this problem, the present invention provides a pyroelectric infrared (PIR) safety sensor capable of detecting the entire area in which the door moves and an automatic door system using the same.

The present invention was created in order to achieve the object of the present invention as described above, the pyroelectric (PIR) motion detection sensor 30 using a pyroelectric infrared (PIR) sensor (3) for detecting heat changes, pyroelectric ( A safety sensor using a PIR) motion detection sensor 30; Disclosed is an automatic door system including an automatic problem controller 18 for controlling a door so that the door is not closed by detecting a movement of an object or a person using the safety sensor while the door is not completely closed.

The pyroelectric (PIR) motion detection sensor 30 is installed in front of the pyroelectric infrared (PIR) sensor (3), the pyroelectric infrared (PIR) sensor (3) for detecting thermal changes to block unnecessary noise and infrared signals While detecting the desired area of the Fresnel lens 2 and the Fresnel lens detection area 27 which performs an infrared light condensing function and determines the detection range of the pyroelectric infrared sensor (PIR) sensor 3 A detection area adjusting unit 1 consisting of a lens window 6 which limits the range of the Fresnel lens detection area 27 so as to amplify a detection signal from the pyroelectric infrared sensor 3. The amplifier 4 may include a motion determining unit 5 that determines whether there is motion using the signal amplified by the amplifier.

As shown in FIG. 7, the pyroelectric (PIR) motion detection sensor 30 may include a detection area adjustment unit 1 having one or more lens windows 6 for specifying a detection area. The detection area adjusting unit 1 may be located in front of the Fresnel lens 2. In addition, a plurality of lens window grooves 32 having various shapes are formed in one lens window 6, and thus a plurality of detection areas may be set at the same time with one lens window 6. Therefore, in the case of the PIR upper sensor of the present invention, since the detection range should be wide, the upper sensor function that can detect a wide range of the front of the lens window groove 32 and the front of the safety sensor function in the lens window 6 It is possible to implement two or more detection areas by placing the lens window groove 32 to perform the [Fig. 7].

The motion determining unit 5 may include a function of varying a motion determination criterion according to a motion signal changing according to an environment change.

The motion criterion may make a change in the motion criterion value by using the larger and smaller ones of the motion signals for a predetermined time.

In addition, the pyroelectric (PIR) motion detection sensor 30 may include an operation display device 16 capable of displaying an operation state of the sensor. As the operation display device 16, various display devices including LEDs, lights, buzzers, and speakers may be used. As an example of an operation display, when a person or an object is not detected, the LED or light may be turned on, and when detected, the LED may be flickered.

The above PIR motion sensor 30 is used in a variety of systems, including lighting, including automatic doors, devices to warn of access to dangerous places, access control devices, security systems, television or advertising systems. It can be widely used in the field of performing various functions by detecting the movement of people or things, including the fields for power saving. Hereinafter, a case in which the pyroelectric (PIR) motion detection sensor 3 of the present invention is used as a safety sensor or an upper sensor of an automatic door will be described in detail.

The pyroelectric (PIR) motion detection sensor 30 can be installed on the top, bottom, left and right sides of the automatic door system and used as a safety sensor. As shown in FIG. 5, the control case may be installed on the lower surface 28 or the front surface 29 to be used as a safety sensor. As shown in Figure 6, it can also be used as a safety sensor by installing on one side of the door frame 13 of the automatic door system. As used above, the pyroelectric (PIR) motion detection sensor 30 is used as a safety sensor, referred to herein as a pyroelectric (PIR) safety sensor (7). Thus, the pyroelectric safety sensor 7 may be installed on any one or more sides of the top, bottom, left and right of the automatic door.

The automatic door system is provided with a control case 11 for protecting the automatic problem machine 18 for controlling the movement of the automatic door on the upper side of the automatic door, the safety sensor can be installed on the lower surface 28 of the control case of the automatic door. .

The present invention also provides a pyroelectric infrared (PIR) sensor (3) for detecting a change in heat; A Fresnel lens 2 for setting a detection area of the pyroelectric infrared sensor 3; A detection area adjustment unit 1 configured of a lens window 6 specifying an external detection area 17 so that external heat changes can be transmitted to the Fresnel lens 2; A signal amplifier 4 for amplifying a heat change signal sensed by the pyroelectric infrared sensor (PIR); Disclosed is a safety sensor having a motion determining unit (5) for determining whether a person or a thing is moving by using a signal amplified by the signal amplifier (4). That is, the pyroelectric (PIR) motion detection sensor 30 of the present invention can be installed in the automatic door system to be used as a safety sensor of the automatic door system. The safety sensor used at this time is referred to herein as a pyroelectric safety sensor (PIR).

The sensing area adjusting unit 1 of the pyroelectric (PIR) safety sensor 7 may include one or more lens windows 6 for specifying the sensing area.

The motion determination unit 5 may vary the motion determination criteria according to the heat change signal that changes according to environmental changes.

The motion criterion can make a change in the numerical value of the criterion by using the larger and smaller ones of the motion signals for a predetermined time. That is, the signal values detected for a predetermined time are arranged in the order of magnitude and divided into a large signal group and a small signal group, and the average value of the large values is the upper value of the motion criterion and the average value of the small values is the By setting the lower value, the motion criterion value can be changed to reduce the malfunction of environmental changes.

In addition, the pyroelectric (PIR) motion detection sensor 30 may be used as an upper sensor of the automatic door system when the detection area adjustment unit 1 sets the detection area wide. When used as the upper sensor, it is possible to detect the movement of people or objects from near to the moving area of the door to perform the safety sensor at the same time, the upper sensor does not need a separate safety beam sensor 23 or safety sensor Becomes The upper sensor using the pyroelectric (PIR) motion detection sensor 30 of the present invention is referred to herein as a pyroelectric (PIR) upper sensor. The PIR upper sensor combines the safety sensor function that is difficult to realize in other upper sensors, so one sensor can replace the sensors of the automatic door system.

The pyroelectric (PIR) motion detection sensor of the present invention can prevent malfunction due to sunlight or illumination light because its frequency band is different from that of sunlight or illumination light. In addition, the problems caused by the presence of the infrared ray transmitting sensor in the existing safety beam sensor, that is, the problems caused by dust or foreign matter and the near infrared reflected by the floor or other reflectors can be solved. In addition, the sensing area adjusting unit uses a plurality of lens windows and variously shapes the grooves of the lens window to set various sensing areas.

And the pyroelectric (PIR) safety sensor of the present invention utilizes the advantages of the pyroelectric (PIR) motion sensor as it is, as shown in Figure 5, when the safety sensor is installed on the lower surface or the front of the control case The area that is not detected at a certain height or less does not exist, and the blind spot of the detection area of the safety sensor is removed, thereby solving a problem caused by a malfunction of the safety sensor in the automatic door or the screen door.

That is, the pyroelectric sensor (PIR) of the present invention can detect the entire area where the door moves below a certain height when installed in the downward direction from the automatic door control case existing in the upper part of the automatic door. In addition, the PIR safety sensor has a three-dimensional space to detect not only the area where the door moves but also the area near the door. There is an advantage that you can use the automatic door more securely. In addition, there is an advantage that the detection area can be adjusted freely left and right using the detection area adjustment unit.

In addition, since the safety beam sensor should be equipped with an infrared ray transmitting sensor and an infrared ray receiving sensor on both door frames of the moving door at the time of installation, two holes for installing the sensors on both sides must be drilled, and the heights thereof must be coincident with the line between the two door frames. There is a hassle to connect. However, when the PIR safety sensor of the present invention is installed downward from the bottom or front of the automatic door control case, only one PIR safety sensor needs to be installed. There is no loss.

1 is a conceptual diagram showing an automatic door system installed with a conventional safety beam sensor.
2 is a block diagram showing the configuration of a pyroelectric (PIR) motion sensor according to an embodiment of the present invention.
FIG. 3 is a diagram illustrating an example in which a motion determination criterion of a motion determining unit provided in a pyroelectric (PIR) motion sensor according to another embodiment of the present invention is automatically converted.
4 is a block diagram showing the configuration of a pyroelectric safety sensor according to another embodiment of the present invention.
5 is a conceptual diagram of an automatic door system showing a state in which a pyroelectric (PIR) safety sensor is installed in an upper control case of an automatic door according to another embodiment of the present invention.
6 is a conceptual diagram of an automatic door system showing a state in which a pyroelectric (PIR) safety sensor is installed on one side of an automatic door according to another embodiment of the present invention.
FIG. 7 is a conceptual diagram of a sensing area adjusting unit including a lens window capable of adjusting a pyroelectric (PIR) motion sensing sensor sensing area according to another exemplary embodiment of the present invention. FIG.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a pyroelectric (PIR) motion sensor 30 according to an embodiment of the present invention.

Referring to FIG. 2, the pyroelectric (PIR) motion detecting sensor 30 includes a pyroelectric infrared (PIR) sensor 3 and a pyroelectric infrared (PIR) sensor for detecting external thermal infrared rays. (3) Fresnel lens (2), Fresnel (determining the detection area and focusing to transmit external thermal infrared rays to the pyroelectric infrared (PIR) sensor (3), and to block unnecessary noise and infrared rays Amplifying the signal from the detection area adjusting unit 1, the pyroelectric infrared (PIR) sensor (3) consisting of one or more lens windows (6) for adjusting the lens detection area to the desired actual motion sensor detection area. It consists of a signal amplifier (4) to determine whether there is motion from the amplified signal and the motion determination unit (5) for outputting the motion.

Since the PIR motion sensor 30 of the present invention has a separate Fresnel lens 2 and a lens window 6 for adjusting the sensing area, the sensing area adjusting unit 1 includes: When the pyroelectric infrared sensor 3 itself has a wide detection area, the actual adjustable detection area is determined by the Fresnel lens 2 and the detection area adjustment unit 1, so that the pyroelectric infrared ( The PIR sensor should have a large detection area. If the detection area of the pyroelectric infrared (PIR) sensor 3 is narrow, there is a restriction on the use of the Fresnel lens, and also the adjustment of the motion detection sensor detection area with the lens windows 6 is limited. It gets bigger. In the following description, the motion sensor detection area is used as the same meaning as the safety sensor detection area or the upper sensor detection area.

In another embodiment of the present invention, the sensing area adjusting unit 1 may not be included in the configuration, and the Fresnel lens 2 itself may be manufactured in accordance with a desired actual sensing area. The detection area adjustment unit 1 may be composed of one or more lens windows 6, and the lens window 6 has a lens window groove 32 drilled in the middle to reduce or adjust the Fresnel lens detection area. It is made in the form with When two or more lens windows 6 are used, motion detection is performed according to the distance between the lens windows 6 and the shape of the lens window groove 32 opened in the lens window 6 and the arrangement of the lens window grooves 32. The sensor detection area can be adjusted. As shown in FIG. 7, the lens window 6 forms a plurality of lens window grooves 32 having various shapes in one lens window 6 so that one lens window 6 can set several detection areas at the same time. Can be. In addition, as shown in FIG. 4, when the lens window groove 32 capable of functioning the lens window 6 is formed in the mounting panel 14, the mounting panel may also function as the lens window 6.

The signal amplifier 4 is an op-amp circuit, which amplifies a small signal from the pyroelectric infrared sensor 3, removes noise, and changes an external environment. It is designed to reduce electromagnetic disturbance so as not to malfunction. In another embodiment of the present invention, the pyroelectric infrared (PIR) sensor 3 may be separated from the signal amplifier 4 and the motion determining unit 5 circuit. In addition, in order to improve the characteristics against noise, it may be desirable to make it integral. In another embodiment of the present invention, in the case of using the pyroelectric (PIR) motion sensor 30 of the present invention as a pyroelectric (PIR) safety sensor (7) that is an automatic door safety sensor, pyroelectric (PIR) It may be desirable to separate the pyroelectric infrared (PIR) sensor (3) from the signal amplifier (4) or the motion determination unit (5) in order to reduce the size of the safety sensor (7), and to drill a small hole in the installation. . In addition, when disconnecting the sensor and the circuit must be connected for a long time, in which case the long connection itself acts as an antenna, which may cause a malfunction, and the installation work is also connected to a wire or a separate PIR safety sensor controller. May be complicated by the need to reduce the length of circuit lines to a minimum.

FIG. 7 is a conceptual diagram of a sensing area adjuster 1 used in a pyroelectric (PIR) motion detecting sensor 30 including a lens window 6 according to another exemplary embodiment of the present invention. Referring to FIG. 7, the sensing region adjusting unit 1 of FIG. 2 may freely adjust the motion sensing sensor sensing region 17 by adjusting the lens window 6. The motion detection sensor detection area 17 may be formed in a spatial shape using a distance between the groove height 21 of the lens window, the groove width 22 of the lens window, and the lens window 6. That is, the detection range of the left and right spaces can be adjusted by changing the size of the lens window groove height 21, and the detection range of the front and rear spaces can be adjusted by changing the size of the lens window groove width 22. If only the Fresnel lens 2 without the lens window 6 is used, the sensing area is fixed and various sensing areas cannot be made. If you want to make several detection zones using only the Fresnel lens (2), you need to manufacture a lot of expensive Fresnel lens (2), and replace the Fresnel lens (2) to match the detection zone However, there is an advantage in terms of cost and time when replacing it with the lens window (6). And it is easy to form a wide variety of detection zones.

The shape of the lens window 6 may be variously shaped according to the sensing area. For example, the shape of the rectangle, triangle, circle, oval, etc. can be taken according to the desired detection area. In addition, the lens window 6 does not need to be flat, and various shapes such as hemispherical shape or quadrangle are possible depending on the shape of the Fresnel lens 2. In another embodiment of the present invention, the lens window function is formed by forming the lens window groove 32 in a specific area of the mounting panel 14 so that the safety sensor detection area can be set in the mounting panel 14 even if the lens window is not separately inserted. In addition, when a plurality of lens windows are used, one of the lens windows 6 may be replaced by the mounting panel 14.

According to an embodiment of the present invention, the motion detection sensor detection area 17 is adjusted in front of the Fresnel lens 2 by using the Fresnel lens 2 capable of detecting a wide area as much as possible. By inserting one or more lens windows 6, the PIR motion sensor 30, the safety sensor 7 and the upper sensor having various detection areas can be made with only one Fresnel lens 2. Can be implemented.

According to another embodiment of the present invention, the Fresnel lens 2 uses a lens having a wider Fresnel lens detection area 27 using a hemispherical lens rather than a planar lens. It is desirable to. This is because the planar Fresnel lens 2 has a large lens size in order to detect a large area, and the detection performance is often lowered even if the lens size is increased. In addition, the Fresnel lens (2) is preferably mounted in a structure that is directly inserted into the pyroelectric infrared (PIR) sensor (3). This is a structure in which the Fresnel lens 2 and the pyroelectric infrared sensor 3 are separated because the focal length is long, so it is difficult to mechanically adjust the focal length, and the Fresnel lens 2 It can overcome the disadvantage of having to make a separate structure to fix). In addition, according to another embodiment of the present invention, the pyroelectric (PIR) motion detection sensor 30 having one or more lens window grooves 32 in the plurality of lens windows 6 and having different motion detection regions 30 is also included. It is possible.

4 is an example of a pyroelectric (PIR) safety sensor 7 and the upper sensor according to another embodiment of the present invention. Since the PIR safety sensor 7 described here is applied to the PIR upper sensor as it is, the PIR upper sensor is replaced with the description of the safety sensor. And since the PIR safety sensor 7 and the upper sensor use the PIR motion detection sensor 30 as it is, and only the ports connecting to the installation position or the automatic troubleshooter 18 are different, the basic characteristics are the same. . The PIR upper sensor is a pyroelectric safety sensor (PIR) that emits a signal that opens the door when a person or object approaches the door, regardless of the open or closed state of the door. There is a difference only in adjusting the sensing area adjusting unit 1 so that the sensing area is formed wider than 7). Pyroelectric (PIR) safety sensor 7 according to an embodiment of the present invention, as shown in Figure 7, the mounting panel 14, the Fresnel lens 2, the operation having a lens window 6, operation A display device (e.g., LED) 16, a pyroelectric infrared (PIR) sensor 3, a signal amplifier 4, and a motion determination unit 5 are provided.

Referring to FIG. 4, in an exemplary embodiment of the present invention, an integrated sensor and a circuit unit in which a pyroelectric infrared (PIR) sensor 3, a signal amplifier 4, and a movement determining unit 5 are combined into one circuit. In addition, the noise characteristics were also improved, and the pyroelectric infrared (PIR) sensor 3 could be fixed comfortably. However, the scope of the present invention also includes a case in which the pyroelectric infrared (PIR) sensor 3 and the signal amplifier 4 and the motion determination unit 5 are separated, and are described based on the combined example.

3 is a view for explaining the operation of the movement determining unit 5 according to another embodiment of the present invention. Referring to FIG. 3, the motion determining unit 5 may detect a signal detected according to an external environment change or noise, that is, a signal supplied from the signal amplifier 4 changes according to an environment change. This allows the motion threshold to be automatically adjusted so that errors do not occur continuously. There are several ways to automatically adjust the motion criteria. According to another embodiment of the present invention, there is a method for automatically adjusting the criterion by implementing the motion criterion in a circuit according to a signal change. According to another embodiment of the present invention, the automatic adjustment method of the criterion for determining uses a mean value of the large and small ones of the motion signals for a predetermined time as the motion criterion values. It is also possible to implement. Specifically, if the motion signal is present in the motion criterion, but the magnitude of the motion signal changes due to external environmental change or noise, the motion criterion is fixed in the existing sensors. As a result, even though the motion is not detected, the motion signal is out of the motion threshold and a malfunction occurs. However, in the present invention, when the magnitude of the motion signal changes due to external environmental change or noise, the motion threshold is also designed to be adaptively changed according to the movement myth change and change as much as the changed motion signal. Will not.

5 is an automatic door system in which a pyroelectric (PIR) safety sensor 7 is installed according to another embodiment of the present invention. Referring to FIG. 5, the PIR safety sensor 7 is installed in the upper automatic door control case 11 so that the PIR safety sensor 7 is installed to face downward. Since all the moving areas can be detected, the blind area of the detection area that a conventional sensor cannot detect can be removed.

6 is an automatic door system in which a pyroelectric (PIR) safety sensor 7 is installed according to another embodiment of the present invention. Referring to FIG. 6, even when the PIR safety sensor 7 is installed on the side, a much wider range can be detected than the conventional safety beam sensor 23, and thus, the safety beam sensor 23 may be detected. Very efficient.

And by applying the pyroelectric infrared (PIR) sensor (3) as a basic sensor for detecting movement, it is very convenient because it operates without malfunction even when there is no obstacle in the sensing area at all. In fact, many automatic doors are used for entrances to buildings and screen doors in subways, where people usually place fixed objects such as luggage or plant pots. By applying the (PIR) sensor (3), these objects do not malfunction and can be used conveniently.

The PIR upper sensor of the present invention, since the embodiments of the PIR safety sensor 7 are applied as it is, it will be understood that the above matters are applied without further explanation. The PIR upper sensor, like the PIR safety sensor 7, detects a person or object from near the door and forms a wider detection area than the safety sensor. Therefore, as shown in FIG. 7, the lens window groove 32 drilled through one lens window 6 may be multiple to set the actual detection area in the lens window 6 of the detection area adjusting unit 1. One of them can sense near the door and the other can sense far away from the door. And the pyroelectric (PIR) upper sensor is preferably installed in the control door 11 of the automatic door. That is, the control case 11 is preferably provided on the lower surface 28 or the control case front surface 29.

And embedded in the ceiling of the pyroelectric (PIR) motion detection sensor 30, the pyroelectric (PIR) safety sensor (7), the pyroelectric (PIR) upper sensor is installed in the ceiling where the automatic door or entrance is installed to detect the downward direction If installed so that it can be used as a buried motion sensor. In the automatic door, the PIR safety sensor 7 is embedded in the ceiling where the automatic door is installed to detect the downward direction, and a signal that detects a person or object in the state that the door is not completely closed and opens the door. It can be used as a buried PIR safety sensor that outputs. In addition, if the PIR upper sensor is installed in the ceiling of the automatic door installation to detect the downward direction, regardless of the closing and opening of the door, people or objects can be detected in the detection area of the upper PIR sensor. It can be used as a buried PIR upper sensor that outputs a signal that opens the door.

Although the present invention has been described in detail through specific embodiments, this is for describing the present invention in detail, and the present invention is not limited thereto, and modifications thereof may be made by those skilled in the art within the technical matters of the present invention. It is obvious that improvement is possible.

The scope of the present invention is shown by the following claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. do.

1: detection area adjuster, 2: Fresnel lens, 3: pyroelectric infrared (PIR) sensor, 4: signal amplifier, 5: motion judgment, 6: lens window, 7: pyroelectric safety Sensor, 8: infrared transmitter, 9: infrared receiver, 10: safety beam controller, 11: control case, 12: door, 13: door frame, 14: mounting panel, 15: mounting hole, 16: operation indication Device (LED), 17: motion sensor detection area, 18: automatic problem breaker, 19: bottom, 20: sunlight or illumination light, 21: lens window groove height, 22: lens window groove width, 23: safety beam sensor , 25: push switch, 27: Fresnel lens detection area, 28: bottom of control case, 29: front of control case, 30: PIR motion sensor, 32: lens window groove

Claims (31)

A pyroelectric infrared (PIR) sensor for detecting a change in heat;
Fresnel lens for setting the detection area of the pyroelectric infrared (PIR) sensor;
A sensing region adjusting unit adjusting a range of the sensing region so that a heat change signal can be transmitted to a Fresnel lens;
A signal amplifier for amplifying a heat change signal detected by the pyroelectric infrared (PIR) sensor;
A pyroelectric (PIR) motion detection sensor comprising a motion determination unit for determining whether the movement of a person or an object using the signal amplified by the signal amplification unit.
The method of claim 1,
The sensing region adjusting unit includes one or two or more lens windows to freely adjust the sensing region.
The method of claim 1,
The sensing region adjusting unit includes a lens window having two or more lens window grooves that may simultaneously constitute two or more sensing regions.
The method according to claim 1 or 2,
The motion determining unit is a pyroelectric (PIR) motion detection sensor, characterized in that the motion determination criteria are automatically changed according to the change of the pyroelectric infrared (PIR) sensor signal according to noise or external environment changes.
The method of claim 3, wherein
The motion determining unit is a pyroelectric (PIR) motion detection sensor, characterized in that the motion determination criteria are automatically changed according to the change of the pyroelectric infrared (PIR) sensor signal according to noise or external environment changes.
The method of claim 4, wherein
The motion determining unit divides the larger ones and the smaller ones of the motion signals for a predetermined period of time, and the motion criterion is automatically changed using an average value of large values and an average value of small values. Sensor.


The method according to claim 1 or 2,
The pyroelectric (PIR) motion detecting sensor further comprises a motion display device.
The method of claim 3, wherein
The pyroelectric (PIR) motion detecting sensor further comprises a motion display device.
A pyroelectric infrared (PIR) sensor for detecting a change in heat;
Fresnel lens for setting the detection area of the pyroelectric infrared (PIR) sensor;
A sensing area adjusting unit adjusting a range of the sensing area so that a heat change signal can be transmitted to a Fresnel lens;
A signal amplifier for amplifying a heat change signal detected by the pyroelectric infrared (PIR) sensor;
Pyroelectric safety sensor of the automatic door characterized in that it comprises a motion determining unit for determining whether the movement of the person or object using the signal amplified by the signal amplification unit.
The method of claim 9,
The sensing area adjusting unit includes a one or two or more lens windows to freely adjust the sensing area.
10. The pyroelectric safety sensor of claim 9, wherein the sensing area adjusting unit includes a lens window having two or more lens window grooves that may simultaneously constitute two or more sensing areas.
The method of claim 9 or 10, wherein the movement determining unit
Pyroelectric infrared (PIR) sensor according to the noise or changes in the external environment Pyroelectric (PIR) safety sensor, characterized in that the movement criteria is automatically changed according to the signal change.
The method of claim 11, wherein the motion determination unit
Pyroelectric infrared (PIR) sensor according to the noise or changes in the external environment Pyroelectric (PIR) safety sensor, characterized in that the movement criteria is automatically changed according to the signal change.
The method of claim 12, wherein the motion determination unit
The PIR safety sensor, characterized in that the motion determination criteria are automatically changed by dividing the large and small ones of the motion signals for a predetermined time by using the average value of the large values and the average value of the small values.
11. The pyroelectric safety sensor of claim 9 or 10, wherein said pyroelectric safety sensor further comprises an operation display device.
12. The pyroelectric safety sensor of claim 11, wherein the pyroelectric safety sensor further comprises an operation indicator.
13. The pyroelectric safety sensor of claim 12, wherein the pyroelectric safety sensor further comprises an operation indicator.
A pyroelectric infrared (PIR) sensor for detecting a change in heat;
Fresnel lens for setting the detection area of the pyroelectric infrared (PIR) sensor;
A sensing region adjusting unit adjusting a range of the sensing region so that a heat change signal can be transmitted to a Fresnel lens;
A signal amplifier for amplifying a heat change signal detected by the pyroelectric infrared (PIR) sensor;
Pyroelectric upper sensor of the automatic door characterized in that it comprises a motion determination unit for determining whether the movement of a person or object using the signal amplified by the signal amplification unit.
The method of claim 18,
The sensing area adjusting unit includes a one or two or more lens windows so as to freely adjust the sensing area.
The method of claim 18,
The sensing area adjusting unit includes a lens window having two or more lens window grooves that may simultaneously constitute two or more sensing areas.
The method of claim 18 or 19,
The motion determining unit is a pyroelectric (PIR) upper sensor, characterized in that the motion determination criteria are automatically changed according to the change of the pyroelectric infrared (PIR) sensor signal in accordance with changes in noise or external environment.
The method of claim 20,
The motion determination unit PIR upper sensor, characterized in that the motion determination criteria are automatically changed according to the change of the pyroelectric infrared (PIR) sensor signal in accordance with changes in noise or external environment.
The method of claim 21,
The motion determining unit divides the larger ones and the smaller ones of the motion signals for a predetermined period of time, and the motion determination criteria are automatically changed by using the average value of the large values and the average value of the small values. .
The method of claim 18 or 19,
The pyroelectric upper sensor includes a PIR upper sensor.
The method of claim 20,
The pyroelectric upper sensor includes a PIR upper sensor.
The method of claim 21,
The pyroelectric upper sensor includes a PIR upper sensor.
An automatic door system consisting of a safety sensor with a detection zone adjuster that adjusts the range of the detection zone so that the automatic troubleshooter, moving door, and heat change signal can be transmitted to the Fresnel lens is one of the upper and left and right sides of the automatic door. It is installed on the side and uses Pyroelectric motion sensor as a safety sensor that outputs a signal to open the automatic door by detecting the movement near the automatic door moving area or the automatic door moving area without the door closed. Automatic door system.
The method of claim 27,
In the automatic door equipped with an automatic problem breaker of the automatic door system and having a control case on the upper side of the automatic door, the safety sensor is installed on the bottom or front of the control case to detect the downward or front direction of the control case. Featuring automatic door system.
The method of claim 27,
Automatic door system characterized in that the movement of the Pyroelectric (PIR) motion sensor in one of the door frames existing on both sides of the automatic door system to detect the movement in the left and right direction, the area the automatic door moves.

In the automatic door system consisting of an automatic problem controller, a moving door, and an upper sensor having a detection area adjustment unit for adjusting a range of the detection area so that a heat change signal can be transmitted to a Fresnel lens, the upper sensor is configured to move the automatic door. An automatic door system, characterized in that it is a pyroelectric (PIR) motion detection sensor that detects movement near an area or an area where an automatic door moves and outputs a signal to open the automatic door.
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