KR20200132168A - Invasion detecting apparatus and invasion detecting method using the same - Google Patents

Abstract

An intrusion detection device is disclosed. According to an aspect of the present invention, as an intrusion detection device for detecting an intruder entering the detection area, an optical transmission unit for transmitting light, a light receiving unit for receiving reflected light transmitted from the optical transmission unit and reflected by the intruder, A conversion unit that converts the reflected light received by the light receiving unit into an intrusion detection signal, and an operation processing unit that receives an intrusion detection signal from the conversion unit and determines whether an intrusion has entered, and the light receiving unit detects after receiving the reflected light An intrusion detection device is provided that receives the ambient light transmitted from the inside of the area, the conversion unit converts the ambient light received by the light receiving unit into an environment signal, and the operation processing unit uses the environment signal to remove the noise signal from the intrusion detection signal. do.

Description

Intrusion detection device and intrusion detection method using the same {INVASION DETECTING APPARATUS AND INVASION DETECTING METHOD USING THE SAME}

The present invention relates to an intrusion detection device and an intrusion detection method using the same.

In general, an intrusion detection system is installed in buildings where security and crime prevention are important, such as offices, houses, and buildings.

The intrusion detection system can set an invisible boundary with the detector itself, and it is an independent chip that can detect when an intruder enters this area. The tension generated by the intruder ascending the fence by creating a detection system and a physical fence It is divided into a fence-type intrusion detection system that detects intrusion by or vibration, and a suitable intrusion detection device may be installed according to each system.

Here, the intrusion detection device includes a device that detects an intruder using ultrasonic waves, microwaves, and infrared rays that cannot be detected by humans, and when using infrared rays, a light source and an infrared sensor are combined to detect the reflected light from the intrusion. There is a reflective type, or a light-shielding type that detects that the front surface of the light receiver is covered by an intrusive object. In addition, when ultrasound or microwave is used, a moving object can be detected using the Doppler effect.

Republic of Korea Patent Application Publication No. 10-2013-0084081 (published on 24 July 2013)

The present invention provides an intrusion detection device that transmits and receives light to detect the intrusion of an intruder, and reduces environmental noise caused by ambient light from reflected light reflected by the intruder to more accurately determine whether the intrusion has occurred.

According to an aspect of the present invention, as an intrusion detection device for detecting an intruder entering the detection area, an optical transmission unit for transmitting light, a light receiving unit for receiving reflected light transmitted from the optical transmission unit and reflected by the intruder, A conversion unit that converts the reflected light received by the light receiving unit into an intrusion detection signal, and an operation processing unit that receives an intrusion detection signal from the conversion unit and determines whether an intrusion has entered, and the light receiving unit detects after receiving the reflected light An intrusion detection device is provided that receives the ambient light transmitted from the inside of the area, the conversion unit converts the ambient light received by the light receiving unit into an environment signal, and the operation processing unit uses the environment signal to remove the noise signal from the intrusion detection signal. do.

The intrusion detection device may further include a control unit for controlling an optical transmission unit, a conversion unit, and an operation processing unit.

The control unit may temporarily stop the operation of the light transmitting unit when the light receiving unit receives the reflected light reflected by the intruder.

The intrusion detection device may further include a notification unit notifying the intrusion of the intrusion when the calculation processing unit determines the intrusion of the intrusion.

The light receiving unit is composed of one photodiode and can receive both reflected light and ambient light.

According to another aspect of the present invention, as an intrusion detection method for detecting an intruder entering the detection area, transmitting light using an optical transmission unit, and receiving reflected light transmitted from the optical transmission unit and reflected by the intruder The step of: receiving the ambient light transmitted from the inside of the detection area, converting the reflected light into an intrusion detection signal using a conversion unit, converting the ambient light into an environment signal using a conversion unit, and the operation processing unit converting the environment signal There is provided an intrusion detection method including the step of removing a noise signal from the intrusion detection signal by using, and determining whether an intruder is intruded through the intrusion detection signal from which the noise signal is removed by the calculation processing unit.

One light receiving unit may perform the step of receiving the reflected light reflected by the intruder and the step of receiving the ambient light transmitted from the inside of the sensing area.

The intrusion detection method may further include temporarily stopping the operation of the optical transmitter between the step of receiving the reflected light reflected by the intruder and the step of receiving the ambient light.

The intrusion detection method may further include the step of notifying the intrusion of the intruder by using a notification unit when the intrusion of the intruder is determined after the step of determining whether the intruder has entered.

According to an embodiment of the present invention, it is possible to detect the intrusion of an intruder by transmitting and receiving light, and to determine more accurate intrusion by reducing environmental noise caused by ambient light from reflected light reflected by the intruder.

1 is a view showing an intrusion detection device according to an embodiment of the present invention.
2 is a flow chart showing an intrusion detection method using an intrusion detection device according to an embodiment of the present invention.

Since the present invention can apply various transformations and have various embodiments, specific embodiments will be illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the present invention to a specific embodiment, it is to be understood to include all conversions, equivalents, and substitutes included in the spirit and scope of the present invention. In describing the present invention, when it is determined that a detailed description of a related known technology may obscure the subject matter of the present invention, a detailed description thereof will be omitted.

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 used only for the purpose of distinguishing one component from another component.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present application, terms such as "comprise" or "have" are intended to designate the presence of features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, but one or more other features. It is to be understood that the presence or addition of elements or numbers, steps, actions, components, parts, or combinations thereof, does not preclude in advance.

In addition, the term “couple” does not mean only a case in which each component is in direct physical contact with each other in the contact relationship between each component, but a different component is interposed between each component, and the component is It should be used as a concept that encompasses each contact.

Hereinafter, embodiments of the intrusion detection apparatus 100 according to the present invention will be described in detail with reference to the accompanying drawings, and in the description with reference to the accompanying drawings, the same or corresponding components are given the same reference numbers, A redundant description of this will be omitted.

According to an embodiment of the present invention, as an intrusion detection device 100 for detecting an intrusion body 10 entering the detection area 20, the optical transmission unit 110 and the optical transmission unit 110 for transmitting light The light receiving unit 120 for receiving the reflected light transmitted from the intruder 10 and reflected by the intruder 10, the conversion unit 130 for converting the reflected light received by the light receiving unit 120 into an intrusion detection signal, and the conversion unit 130 ), which receives the intrusion detection signal from the intrusion detection signal and determines whether the intrusion body 10 is intrusive, and the light receiving unit 120 receives the reflected light and then the ambient light transmitted from the inside of the detection area 20 And, the conversion unit 130 converts the environmental light received by the light receiving unit 120 into an environmental signal, and the operation processing unit 140 uses the environmental signal to detect intrusion to remove the noise signal from the intrusion detection signal. An apparatus 100 is provided.

The intrusion detection device 100 of the present embodiment detects the intrusion of the intruder 10 by transmitting and receiving light, and determines more accurate intrusion by reducing environmental noise caused by ambient light from the reflected light reflected by the intruder 10 can do.

Hereinafter, each configuration of the intrusion detection apparatus 100 according to the present embodiment will be described with reference to FIG. 1.

The intrusion detection device 100 of the present embodiment can detect the intrusion body 10 entering the detection area 20 to determine whether the intrusion body 10 has intruded, and notify the intrusion of the intrusion body 10. I can.

As shown in FIG. 1, the optical transmission unit 110 may include a light source capable of transmitting light, and more specifically, the optical transmission unit 110 may transmit laser light.

Laser light (LASER; Light Amplification by the Stimulated Emission of Radiation) refers to light amplified by induced emission. The wavelength and phase are the same as normal light, but have monochromaticity and are parallel without spreading a longer distance than normal light It has the characteristic that it can proceed in the direction.

As shown in FIG. 1, the light receiving unit 120 may receive reflected light transmitted from the light transmitting unit 110 and reflected by the intruder 10. As described above, when the optical transmission unit 110 transmits laser light, the optical reception unit 120 may receive laser light, and more specifically, the light receiving unit 120 may receive laser light including a photodiode. I can.

In addition, the light receiving unit 120 may receive ambient light transmitted from the inside of the sensing area 20 after receiving the reflected light. More specifically, the light receiving unit 120 is composed of one photodiode to provide reflected light and environment. It can receive all light. Therefore, in this embodiment, reflected light and ambient light are received through separate photodiodes using a plurality of photodiodes, and are not converted into signals through separate conversion units 130, but reflected light using one photodiode. It can receive both and environmental light and convert it into a signal, enabling a more economical design.

Here, the reflected light includes light generated from the light transmitting unit 110 and reflected by the intruder 10, for example, laser light, as well as light transmitted from the inside of the sensing area 20 to the light receiving unit 120, that is, ambient light. In this way, noise may occur when converting the reflected light into an intrusion detection signal by light other than the reflected light.

As shown in FIG. 1, the conversion unit 130 may convert the reflected light received by the light receiving unit 120 into an intrusion detection signal, and convert the ambient light received by the light receiving unit 120 into an environment signal. can do.

The conversion unit 130 may include an analog-digital converter (ADC), and may convert an analog signal generated by radiated light received by the light receiving unit 120 into a digital signal.

As shown in FIG. 1, the operation processing unit 140 may receive an intrusion detection signal from the conversion unit 130 and determine whether the intrusion body 10 has intruded. More specifically, the operation processing unit 140 receives the intrusion detection signal and the environmental signal from the conversion unit 130 and uses the environmental signal to remove the noise signal from the intrusion detection signal, that is, the optical transmission unit 110 Signal data obtained by converting only the light generated and reflected by the intruder 10 can be obtained.

Here, the noise signal is generated by ambient light partially included in the reflected light, and may be removed from the intrusion detection signal in order to accurately grasp the intrusion of the intruder 10 into the detection area 20.

Accordingly, the calculation processing unit 140 may determine the intrusion of the intrusive body 10 through the above-described process, and transmit a signal to the notification unit 150 to be described later when the intrusion of the intrusion body 10 is determined.

As shown in Fig. 1, the control unit 160 can control the optical transmission unit 110, the light receiving unit 120, the conversion unit 130, the operation processing unit 140, and the notification unit 150, and sensing The region 20, detection time, detection sensitivity, and the like can be controlled.

In addition, when the light receiving unit 120 receives the reflected light reflected by the intruder 10 so that the light receiving unit 120 can receive the ambient light after the light receiving unit 120 receives the reflected light, the control unit 160 You can pause the operation. Accordingly, reflected light and ambient light may be separately collected using one light receiving unit 120, and noise signals may be removed from the intrusion detection signal through this.

As shown in FIG. 1, the notification unit 150 may notify the intrusion of the intrusive body 10 when the calculation processing unit 140 determines the intrusion of the intrusive body 10, and light, sound, vibration and display Any one or more of them may be used to notify the intrusion of the intrusion body 10.

Next, an intrusion detection method using the intrusion detection device 100 according to the present embodiment will be described in detail with reference to FIG. 2.

According to another aspect of the present embodiment, as an intrusion detection method for detecting the intrusion body 10 entering the detection area 20, the step of transmitting light using the optical transmission unit 110 (S110), the optical transmission unit Receiving the reflected light transmitted from 110 and reflected by the intruder 10 (S120), receiving the environmental light transmitted from the inside of the sensing area 20 (S140), using the conversion unit 130 And converting the reflected light into an intrusion detection signal (S150), converting the environmental light into an environmental signal using the conversion unit 130 (S160), and the operation processing unit 140 using the environmental signal An intrusion detection method including the step of removing the noise signal (S170), and the step (S180) of determining whether the intrusion body 10 is intruded through the intrusion detection signal from which the noise signal is removed by the operation processing unit 140 is presented. .

First, as shown in FIG. 2, light may be transmitted using the optical transmission unit 110 (S110). The optical transmission unit 110 may transmit laser light, and the transmission frequency may be adjusted according to settings.

Next, as shown in FIG. 2, the reflected light transmitted from the optical transmission unit 110 and reflected by the intruder 10 may be received (S120).

Subsequently, when the light receiving unit 120 receives the reflected light (S120), the operation of the light transmitting unit 110 can be temporarily stopped as shown in FIG. 2 (S130), and at this time, the light receiving unit 120 Since it is not received, only the ambient light transmitted from the inside of the sensing area 20 may be received (S140).

Herein, the step of receiving the reflected light reflected by the intruder 10 (S120) and the step of receiving the ambient light transmitted from the inside of the detection area 20 (S140) may be performed by one light receiving unit 120, , As described above, it may be performed with time between the step of receiving the reflected light and the step of receiving the ambient light.

Next, as shown in FIG. 2, the reflected light may be converted into an intrusion detection signal using the conversion unit 130 (S150), and the environment light may be converted into an environment signal (S160).

Next, as shown in FIG. 2, the operation processing unit 140 may remove the noise signal from the intrusion detection signal using the environment signal (S170). The operation processing unit 140 may obtain a more accurate intrusion detection signal by removing the noise signal from the intrusion detection signal, and through this, it is possible to determine whether the intruder 10 enters the detection area 20 (S180). .

Next, as shown in FIG. 2, when the intrusion of the intruder 10 is determined, it is possible to notify whether the intrusion 10 has been intruded using the notification unit 150 (S190). Here, the notification unit 150 may notify the intrusion of the intruder 10 using at least one of light, sound, vibration, and a display.

As described above, one embodiment of the present invention has been described, but those of ordinary skill in the relevant technical field add, change, delete or add components within the scope not departing from the spirit of the present invention described in the claims. Various modifications and changes can be made to the present invention by means of the like, and it will be said that this is also included within the scope of the present invention.

10: intruder
20: detection area
100: intrusion detection device
110: optical transmission unit
120: light receiver
130: conversion unit
140: operation processing unit
150: notification unit
160: control unit

Claims (9)

As an intrusion detection device for detecting an intruder entering the detection area,
An optical transmission unit for transmitting light;
A light receiving unit that is transmitted from the light transmitting unit and receives reflected light reflected by the intruder;
A conversion unit converting the reflected light received by the light receiving unit into an intrusion detection signal; And
Including an operation processing unit for receiving the intrusion detection signal from the conversion unit to determine whether the intrusion has entered,
After receiving the reflected light, the light receiving unit receives ambient light transmitted from the inside of the sensing area,
The conversion unit converts the ambient light received by the light receiving unit into an environment signal,
The intrusion detection device, wherein the operation processing unit removes a noise signal from the intrusion detection signal by using the environmental signal.
The method of claim 1,
Intrusion detection apparatus further comprising a control unit for controlling the optical transmission unit, the conversion unit, and the operation processing unit.
The method of claim 2,
The control unit, when the light receiving unit receives the reflected light reflected by the intruder, temporarily suspends the operation of the light transmitting unit.
The method of claim 1,
Intrusion detection device further comprising a notification unit notifying the intrusion of the intrusion when the calculation processing unit determines the intrusion of the intrusive.
The method of claim 1,
The light receiving unit is configured as a photodiode to receive both reflected light and ambient light.
As an intrusion detection method for detecting an intruder entering the detection area,
Transmitting light by using an optical transmission unit;
Receiving reflected light transmitted from the optical transmission unit and reflected by the intruder;
Receiving ambient light transmitted from inside the sensing area;
Converting the reflected light into an intrusion detection signal using a conversion unit;
Converting ambient light into an environment signal using the conversion unit;
Removing a noise signal from the intrusion detection signal by an operation processing unit using the environmental signal; And
Intrusion detection method comprising the step of determining whether the intrusion of the intruder through the intrusion detection signal by removing the noise signal by the operation processing unit.
The method of claim 6,
Intrusion detection method, wherein the step of receiving the reflected light reflected by the intruder and the step of receiving the ambient light transmitted from the inside of the sensing area are performed by one light receiving unit.
The method of claim 6,
Between receiving reflected light reflected by the intruder and receiving ambient light,
Intrusion detection method further comprising the step of pausing the operation of the optical transmission unit.
The method of claim 6,
After the step of determining whether the intruder has entered,
Intrusion detection method further comprising the step of notifying the intrusion of the intruder by using a notification unit when the intrusion of the intruder is determined.

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