KR102591229B1 - Intrusion detection system - Google Patents

Abstract

The embodiment includes a plurality of object detection sensors installed on a fence; A plurality of vibration sensors installed on the fence; It includes a controller that determines whether an intruder has invaded based on information received by the plurality of object detection sensors and the plurality of vibration sensors, wherein the plurality of object detection sensors each include a front detection unit that detects an object in front; It includes a left detection unit that detects an object on the left, and a right detection unit that detects an object on the right, wherein the plurality of object detection sensors includes a first object detection sensor, a second object detection sensor, and a first object detection sensor arranged at a first interval. It includes a third object detection sensor, wherein the detection area of the left detection part of the second object detection sensor overlaps the detection area of the right detection part of the first object detection sensor, and the detection area of the right detection part of the second object detection sensor Discloses an intrusion detection system that overlaps the detection area of the left detection unit of the third object detection sensor.

Description

Intrusion detection system

Embodiments relate to intrusion detection systems.

Typically, in certain buildings or facilities that require security, such as important security facilities such as ports, airports, military facilities, and national security facilities, the identity of the person entering is verified and access is controlled to ensure that only authorized persons can enter. It is necessary to manage and understand the status or situation of security facilities in real time.

To this end, various surveillance and monitoring devices such as fences, cameras, and infrared sensors are installed in security facilities, and the security status of security facilities is managed through these.

However, in the case of these intrusion detection systems, there is a problem that malfunctions occur frequently due to sensor errors or by generating an alarm even when a wild animal, not a human, approaches.

The embodiment provides an intrusion detection system capable of reliable and rapid intrusion detection by complexly applying an intelligent image sensor that analyzes intruder images using a thermal sensor, a vibration sensor, and a deep learning algorithm.

Additionally, it provides an intrusion detection system that can prevent false alarms caused by animals.

The problem to be solved in the embodiment is not limited to this, and it will also include means of solving the problem described below and purposes and effects that can be understood from the embodiment.

An intrusion detection system according to one aspect of the present invention is an intrusion detection system that detects an intrusion into a fence, comprising: a plurality of object detection sensors installed on the fence; A plurality of vibration sensors installed on the fence; It includes a controller that determines whether an intruder has invaded based on information received by the plurality of object detection sensors and the plurality of vibration sensors, wherein the plurality of object detection sensors each include a front detection unit that detects an object in front; It includes a left detection unit that detects an object on the left, and a right detection unit that detects an object on the right, wherein the plurality of object detection sensors includes a first object detection sensor, a second object detection sensor, and a first object detection sensor arranged at a first interval. It includes a third object detection sensor, wherein the detection area of the left detection part of the second object detection sensor overlaps the detection area of the right detection part of the first object detection sensor, and the detection area of the right detection part of the second object detection sensor overlaps with the detection area of the left detection part of the third object detection sensor.

The minimum detection height of the left detection unit and the right detection unit of the plurality of object detection sensors may be higher than the height at which the plurality of vibration sensors are disposed.

a main cable sequentially connected to the plurality of vibration sensors; a return cable connected to the last vibration sensor among the plurality of vibration sensors; and a fixing clip that secures the main cable and the return cable to the fence, wherein the controller is connected to the main cable and the return cable, and the controller sends an inspection signal to the plurality of vibration sensors through the main cable. By transmitting and receiving the inspection signal through the return cable, it is possible to check whether the main cable and the return cable are cut.

The detection height of the left detection unit and the right detection unit of the plurality of object detection sensors is set higher than the height at which the plurality of vibration sensors are arranged so that the movement of wild animals is not detected, and an intruder attempts to breach the fence. In this case, the left detection unit of the first object detection sensor and the right detection unit of the second object detection sensor are simultaneously detected, and an auxiliary detection sensor is placed on the front of the vibration sensor, so that an intruder approaching the fence is primarily detected by the vibration sensor. After being detected by the front detection part of the object detection sensor, it is secondarily detected by the auxiliary detection sensor, and the main cable and the return cable are spaced apart from each other so that an intruder cannot pass between them, and are secured to the fence by a fixing clip. It is installed so that an intruder approaching the fence by crawling or walking cannot pass through the lower part of the fence without cutting the main cable or return cable or causing vibration in the fence, and the controller is located in front of the object detection sensor. The detection result of the detection unit, the left detection unit, and the right detection unit is combined with the detection result of the vibration sensor to determine whether there is an intrusion, and the controller is operated by the left detection unit or the If the object detection signal is not detected in the right detection unit and the vibration signal is not received, and the inspection signal transmitted from the controller is not received through the return cable, it may be determined that the main cable or return cable was cut by an intruder. You can.

If the controller determines that the main cable or return cable has been cut by an intruder, the controller determines the cut location of the cable by checking vibration sensors that can communicate through the main cable and simultaneously checking vibration sensors that can communicate through the return cable in both directions. It can be estimated.

It includes a plurality of image sensors installed on the fence, and the controller collects image information by controlling an image sensor disposed in an area where an intrusion is detected among the plurality of image sensors, and analyzes the collected image information to determine whether there is an intrusion. You can check.

The plurality of image sensors may include a microphone or a lighting module, and the controller may control the microphone or the lighting module to output a warning sound or illuminate a region where an intrusion is detected among the plurality of image sensors.

According to an embodiment, false alarms caused by animals can be prevented by combining an object detection sensor and a vibration sensor.

In addition, primary detection using the front detection unit of the three-way object detection sensor, secondary detection using the left and right detection units, tertiary detection using the vibration sensor, and fourth detection using intruder identification using the image sensor. Reliable and rapid intrusion detection is possible using multiple detections. Therefore, false alarms can be minimized and an accurate intrusion can be determined, thereby maximizing the reliability of the system.

Additionally, intruders approaching the fence can be detected in advance using a three-way object detection sensor.

Additionally, blind spots in the sensor can be eliminated by using an image sensor installed outside the fence along the fence.

Additionally, reliable detection of fence cutting intrusions using a cutter can be achieved by utilizing the communication cable of the vibration sensor.

In addition, there is an advantage that accurate target location estimation is possible through complex operation of sensors, and intrusion location spotlight function and warning broadcast are possible based on accurate target location estimation.

The various and beneficial advantages and effects of the present invention are not limited to the above-described content, and may be more easily understood through description of specific embodiments of the present invention.

1 is a conceptual diagram of an intrusion detection system according to an embodiment of the present invention,
Figure 2 is a diagram showing the range where the detection areas of the object detection sensor overlap;
Figure 3 is a block diagram of an intrusion detection system according to an embodiment of the present invention;
Figure 4 is a diagram showing the detection area of the multi-detection sensors,
Figure 5 is a diagram showing a state in which an intruder approaches the lower part of the fence;
Figure 6 is a diagram showing a state in which the cable connected to the vibration sensor is cut,
Figure 7 is a diagram showing the configuration of detecting an intrusion by an object detection sensor and an auxiliary detection sensor;
Figure 8 is a flowchart showing an intrusion detection method according to an embodiment of the present invention.

Since the present invention can make various changes and have various embodiments, specific embodiments will be illustrated and described in the drawings. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all changes, equivalents, and substitutes included in the spirit and technical scope of the present invention.

Terms containing ordinal numbers, such as second, first, etc., may be used to describe various components, but the components are not limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. For example, the second component may be referred to as the first component without departing from the scope of the present invention, and similarly, the first component may also be referred to as the second component. The term and/or includes any of a plurality of related stated items or a combination of a plurality of related stated items.

When a component is said to be "connected" or "connected" to another component, it is understood that it may be directly connected to or connected to the other component, but that other components may exist in between. It should be. On the other hand, when it is mentioned that a component is “directly connected” or “directly connected” to another component, it should be understood that there are no other components in between.

The terms used in this application are only used to describe specific embodiments and are not intended to limit the 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 the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to indicate the presence of one or more other features. It should be understood that this does not exclude in advance the possibility of the existence or addition of elements, numbers, steps, operations, components, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the technical field to which the present invention pertains. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and unless explicitly defined in the present application, should not be interpreted in an ideal or excessively formal sense. No.

Hereinafter, embodiments will be described in detail with reference to the attached drawings, but identical or corresponding components will be assigned the same reference numbers regardless of reference numerals, and duplicate descriptions thereof will be omitted.

Figure 1 is a conceptual diagram of an intrusion detection system according to an embodiment of the present invention, Figure 2 is a diagram showing the range where the detection areas of the object detection sensor overlap, and Figure 3 is an intrusion detection system according to an embodiment of the present invention. This is a block diagram.

Referring to FIGS. 1 to 3, the intrusion detection system (or device) according to the embodiment includes a plurality of object detection sensors 10 installed on the fence 1 and a plurality of vibration sensors 20 installed on the fence 1. ), a plurality of image sensors 30, and a controller 40 that determines whether there is an intrusion based on information received by each sensor 10, 20, and 30.

The plurality of object detection sensors 10 may be passive infrared sensors (PIR) sensors. The infrared heat detection sensor can detect changes in infrared rays generated by the intruder when the intruder approaches the fence. However, it is not necessarily limited to this, and various sensors that can detect the approach of an intruder may be applied to the object detection sensor 10 without limitation.

The object detection sensor 10 according to the embodiment includes a front detection unit 11 that detects an object in front, a left detection unit 12 that detects an object on the left, and a right detection unit 13 that detects an object on the right. It may be a multi-detection sensor including.

Using this object detection sensor (10), not only does the front detection unit (11) detect an intruder approaching from the front, but the left detection unit (12) and the right detection unit (13) detect the intruder through the fence (1). After getting close to , you can also catch the movement of attempting to cross the fence (1).

Object detection sensors have a problem in that the detection range widens as you move away from the sensor, and the detection range narrows as you get closer to the sensor. Therefore, in the case of the left detection unit 12 and the right detection unit 13, the detection range is narrow near the object detection sensor 10, making it difficult to accurately detect the movement of an intruder. That is, a blind spot may occur near the object detection sensor 10.

Accordingly, in a state where the first object detection sensor 10, the second object detection sensor 10, and the third object detection sensor 10 are spaced apart at a first interval, the left side of the second object detection sensor 10a The detection area 12a of the detection unit 12 may be designed to overlap (C1) with the detection area 13a of the right detection unit 13 of the first object detection sensor 10b. In addition, the detection area 13a of the right detection unit 13 of the second object detection sensor 10a overlaps the detection area 12a of the left detection unit 12 of the third object detection sensor 10c (C2). It can be designed to be

The overlapping areas C1 and C2 of the detection area may be designed to cover the area between the two object detection sensors 10. Therefore, when an intruder tries to cross the fence, the intruder can be detected by both the right detection unit 13 of the first object detection sensor 10 and the left detection unit 12 of the second object detection sensor 10. Therefore, accuracy can be increased compared to detection by only one object detection sensor. For example, even when the first object detection sensor 10b does not operate normally, an intruder can be detected using the second object detection sensor 10a.

Additionally, the front detection unit 11a of each object detection sensor 10 detects the front, and the detection areas may be set to overlap each other (C3). Therefore, any object approaching the fence 1 can be detected by one of the plurality of object detection sensors 10.

The plurality of vibration sensors 20 may be acceleration sensors installed at the lower end of the fence 1 to detect vibration. At least one vibration sensor 20 may be placed on each fence surface. The type of vibration sensor 20 is not particularly limited. The vibration sensor 20 may be a variety of sensors capable of detecting vibrations caused by an intruder.

The controller 40 can supply operating power to the object detection sensor 10 and the vibration sensor 20 or receive information sensed by them. The controller 40 may include a main board for overall operation, a communication module 41 for communication with various sensors and the control center 50, and an input terminal (not shown) for receiving signals from the sensors.

A plurality of video sensors 30 can be arranged to photograph the main surveillance part of the fence or the intrusion area. The image sensor 30 may be a camera, but is not necessarily limited thereto, and various devices capable of acquiring images may be selected.

The image sensor 30 may be rotatably provided to capture images of the assigned fence area. The image sensor 30 can also capture images by enlarging or reducing the image using the zoom in or zoom out function.

The controller 40 or control center 50 uses the vibration changes generated in the fence 1, the infrared changes generated by the body temperature of an intruder approaching the fence, and the image of the video sensor 30 to detect the intruder's approach to the fence or Fence intrusion can be determined.

If the controller 40 or the control center 50 determines that an intruder has invaded, the controller 40 or the control center 50 may radiate light to the area where the intruder is located and transmit a warning signal using a speaker.

Figure 4 is a diagram showing the detection areas of object detection sensors.

The detection height d1 of the left detection unit 12 and the right detection unit 13 of the object detection sensor 10 can be determined by considering the height of large wild animals such as elk, wild boar, roe deer, and raccoon dogs. That is, the detection height (d1) can be set higher than the height (d2) at which wild animals are detected. This detection height may be appropriately adjusted depending on the type of wild animals that appear around the boundary.

For example, most wild animals are less than 1.2m tall (based on adult wild boars), so if you set the detection height to a point that is more than 1.2m above the ground, intruders can be detected, but the detection probability of wild animals may be lowered. Therefore, the probability of mistaking the approach of a wild animal for an intruder and outputting a false alarm can be greatly reduced.

Therefore, when a wild animal approaches the fence, it is detected by the front detection unit 11 but may not be detected by the left and right detection units 12 and 13. Afterwards, when a wild animal collides with the fence, the vibration sensor 20 can collect vibration signals.

The controller 40 transmitted a detection signal from the front detection unit 11, but did not transmit a detection signal from the left detection unit 12 and the right detection unit 13. As a result of analyzing the vibration pattern, it was found that the vibration pattern was caused by a wild animal. If it matches, it may be determined that a wild animal has approached and a warning signal may not be output.

The method of analyzing the vibration pattern is not particularly limited. For example, the vibration patterns of various wild animals, the vibration pattern that occurs when an intruder crosses the fence, and the vibration pattern that occurs when the fence is cut are each stored in memory, and are compared with the vibration pattern received from the vibration sensor to determine the best match. Vibration patterns can also be extracted. In addition, various pattern analysis methods can be applied without limitation.

Figure 5 is a diagram showing a state in which an intruder approaches the lower part of the fence, Figure 6 is a diagram showing a state in which the cable connected to the vibration sensor is cut, and Figure 7 is a diagram showing a state in which an intruder is detected by an object detection sensor and an auxiliary detection sensor. This is a drawing showing the composition.

Referring to Figures 5 and 6, in order to reduce false alarms caused by wild animals, the detection height (d1) of the left detection unit 12 and the right detection unit 13 was set high, and as a result, the intruder crawled over the fence (1). Even when approaching, a problem may occur in which the left detection unit 12 and the right detection unit 13 are not detected.

In this case, as a result of analyzing the vibration signal, if it is not a vibration pattern caused by a wild animal but a vibration pattern caused by an intruder cutting the fence or passing through the lower part of the fence, it is determined that the intruder has entered and an alarm can be output.

However, if an intruder approaches the fence with a low creep and then carefully cuts the fence using a cutter, little vibration may occur. Therefore, the intrusion may not be detected.

The controller 40 according to the embodiment may be connected to a main cable 41 and a return cable 42 that are sequentially connected to a plurality of vibration sensors 20. The main cable 41 and the return cable 42 can be fixed to the fence 1 by a fixing clip 43.

According to the embodiment, a plurality of vibration sensors 20 are linearly connected by the main cable 41, and the last vibration sensor 20 is a ring connected to the controller 40 by a return cable 42. It may have a connection structure. According to this configuration, even if either the main cable 41 or the return cable 42 is cut, the controller 40 can communicate with all vibration sensors 20 using the remaining cable.

The controller 40 can transmit an inspection signal to a plurality of vibration sensors 20 using the main cable 41. Afterwards, it is possible to check whether the main cable 41 and the return cable 42 are cut by receiving an inspection signal through the return cable 42.

The transmission cycle of the inspection signal is not particularly limited. For example, the inspection signal is normally transmitted intermittently at a predetermined cycle, but when the front detection unit 11 detects an object, the transmission cycle can be shortened. That is, the detection signal of the front detection unit 11 may function as a trigger signal.

The main cable 41 may be placed higher than the return cable 42, but is not necessarily limited to this. For example, the return cable 42 may be placed higher than the main cable 41.

At this time, the maximum height d3 of the vibration sensor 20, the main cable 41, and the return cable 42 may be placed lower than the minimum detection height of the left detection unit 12 and the right detection unit 13. This is because heights higher than that can be detected by the left detection unit 12 and the right detection unit 13.

The return cable 42 can be placed at a height where an intruder cannot enter without cutting the return cable 42 because the gap between the ground and the return cable 42 is very narrow. For example, the installation height of the return cable 42 may be 5 cm to 50 cm from the ground, but is not necessarily limited thereto.

The fixing clip 43 may be made of a material and structure that has high vibration when cutting. Therefore, when cutting the fixing clip 43, a relatively large vibration occurs compared to cutting the fence, so the vibration sensor 20 can detect it.

The distance d4 between the main cable 41 and the return cable 42 can be set close enough to prevent an intruder from breaking in without cutting either the main cable 41 or the return cable 42. As a result, the lower part of the detection area of the object detection sensor 10 cannot be intruded without cutting the main cable 41 and the return cable 42 or crossing the cable, so there is an advantage in that intrusion can be clearly detected.

An intruder must cut the main cable 41 or the return cable 42 to enter the lower part of the object detection sensor 10. However, if the main cable 41 or the return cable 42 is cut and the inspection signal is not received, the controller 40 may determine that the intruder has cut the main cable 41 or the return cable 42.

At this time, even if either the main cable 41 or the return cable 42 is cut, the controller 40 can communicate with all vibration sensors 20. For example, when 10 vibration sensors 20 are arranged, if an intruder cuts the main cable 41 between vibration sensors 6 and 7, the controller 40 uses the main cable 41. It can communicate with vibration sensors No. 1 to No. 6, and can communicate with vibration sensors No. 7 to No. 10 using the return cable 42. Accordingly, the controller 40 may determine that the space between the 6th vibration sensor 20 and the 7th vibration sensor 20 is cut. That is, the controller 40 can estimate the cut area by communicating with vibration sensors in both directions using the main cable 41 and the return cable 42.

If an intruder cuts the fence and infiltrates from a position higher than the position where the main cable 41 and the return cable 42 are installed, it may become relatively difficult to maintain balance, resulting in significantly large vibrations. Therefore, it is possible to detect whether there is an intrusion using the detection signal of the vibration sensor 20. Additionally, in this case, movement may be detected by the object detection sensor 10.

The vibration sensor 20 of the present invention does not simply measure the signal size of the vibration sensor 20, but also analyzes the shape of the vibration signal to determine whether it is a vibration signal caused by an intruder's wall fence or a vibration signal caused by the fence shaking due to the wind. It is possible to distinguish whether it is a fence vibration signal caused by animal contact, etc., or a vibration signal caused by a cutter.

When a vibration signal from a cutter is detected, it can be distinguished through pattern analysis because the waveform is different from other vibration signals because it is an artificial vibration using a specific tool. In particular, in the present invention, the cable must be cut or the fixing clip 43 must be cut using a cutter. In this case, very large vibrations may occur and the shape of the vibration signal may be different from other vibration signals, so it cannot be sufficiently distinguished. You can.

Referring to FIGS. 6 and 7, the auxiliary detection sensor 21 may be formed integrally with the vibration sensor 20. The auxiliary detection sensor 21 may be the same infrared sensor (PIR sensor) as the object detection sensor 10. One main board may have an infrared sensor installed in addition to the acceleration sensor, but this is not necessarily limited and a separate sensor may be modularized.

According to this configuration, the front detection unit 11 of the object detection sensor 10 first detects an intruder approaching the fence 1, and then, after a few seconds or minutes, the auxiliary detection sensor 21 detects the intruder with a time difference. Detection allows you to more accurately determine the intruder's location and intrusion route.

Figure 8 is a flowchart showing an intrusion detection method according to an embodiment of the present invention.

Referring to Figures 1 and 8, the front detection unit 11 of the object detection sensor 10 detects an object approaching from the front, and the movement of the object is also detected in the left detection unit 12 and the right detection unit 13. You can determine whether it has been detected (S110).

Using this object detection sensor 10, not only does the front detection unit 11 detect an intruder approaching from the front, but the left detection unit 12 and the right detection unit 13 detect the intruder approaching the fence. Afterwards, attempts to break in by crossing the fence can also be detected.

At this time, in order to detect blind spots occurring near the object detection sensor 10, the detection area 12a of the left detection part 12 of the object detection sensor 10 detects the right side of the neighboring object detection sensor 10. It may be designed to overlap the sensing area 13a of the unit 13. In addition, the detection area 13a of the right detection unit 13 of the object detection sensor 10 may be designed to overlap the detection area 12a of the left detection unit 12 of the neighboring object detection sensor 10. .

If movement of an object is detected in both the front detection unit 11 and the left and right detection units 13, and vibration occurs in the vibration sensor 20 (S120), it can be confirmed whether the vibration is caused by an intruder. As a result of analyzing the measured vibration pattern, if it matches the vibration pattern when the intruder cut the fence or crossed the fence, it can be determined that the intruder has entered (S130).

When an intrusion is initially confirmed using the vibration sensor 20 and the object detection sensor 10, the video sensor 30, which is in charge of the location where the intrusion occurred, captures the video and classifies it as an intruder, animal, etc., and finally You can determine whether there is an intrusion (S150).

The image captured by the image sensor 30 can be analyzed by the embedded artificial intelligence server built into the image sensor 30 or the controller 40 in charge of the image sensor 30. However, it is not necessarily limited to this, and video analysis can be performed on a high-performance artificial intelligence server placed in the control center 50.

According to the embodiment, primary detection by the front detection unit 11 of the three-way object detection sensor 10, secondary detection by the left and right detection units 13, and tertiary detection by the vibration sensor 20. , and reliable and rapid intrusion detection is possible using multiple detection by fourth detection using intruder identification by the image sensor 30. Therefore, false alarms can be minimized and accurate intrusions can be detected, thereby maximizing the reliability of the intrusion detection system.

In the case of a fence where an intruder breaks through the fence, primary detection by the front detection unit 11 of the object detection sensor 10, simultaneous detection by the side detection unit of the neighboring object detection sensor 10, and vibration detection by the fence are sequentially performed. Since it must occur to be detected, intrusions caused by fence walling can be detected with very high reliability. Conversely, the probability of being mistaken for a fence cut invasion or fence wall invasion due to wind, shaking tree branches, heavy rain, etc. may be very small.

Basically, the vibration sensor 20 is installed on each fence surface, and the fence surface is usually 2m to 3m, so by analyzing the magnitude of the vibration signals of the vibration sensors 20, the location of the fence surface where the vibration occurred can be known. This is because, in most cases, the largest vibration is detected by the vibration sensor 20 attached to the fence surface where the vibration occurs.

However, for example, if the fence surface where the vibration occurred is well fixed, but the surrounding fence surface is not well fixed, larger vibrations may be detected on the fence surface farther away from the vibration point.

In order to solve this problem, in the present invention, the intrusion location can be found by combining the signal sizes of the object detection sensor 10 as well as the vibration signal sizes of the vibration sensors 20.

Since the left and right detection units 12 and 13 of the object detection sensor 10 placed on both sides of the intruder's location detect the intruder, the intruder's location is between the adjacent object detection sensors 10.

Since the object detection sensor 10 is not significantly affected by the fixed state of the fence surface, it can calculate the location of the intruder relatively accurately. Therefore, by combining the comparison of the vibration signal sizes of the vibration sensors 20 and the detection results of the object detection sensor 10, the intrusion location can be found more accurately.

In the present invention, when an intrusion occurs, a lighting module (high-brightness LED) is placed in one of the vibration sensor 20, object detection sensor 10, or image sensor 30 at the corresponding location based on the intrusion location accurately found by the above method. By turning on the intruder, it is possible to easily apprehend the intruder by illuminating only the area around the intruder without a spotlight.

Since the existing method cannot accurately locate the intruder, not only must an expensive spotlight with powerful performance be used to illuminate a large area, but in some cases, the intruder may be missed.

Additionally, since the exact location of the intruder is known, a warning broadcast can only be made where the intruder is located. If the intruder's location is not accurate, there is a disadvantage that, like a spotlight, a powerful and expensive speaker must be used to make the warning broadcast heard in a wide area.

In the case of an intrusion warning broadcast, it occurs when an actual intruder breaks in, but it also occurs when a false alarm occurs or when a civilian with no intention of intruding touches the fence as a joke, so whenever a very loud warning broadcast is made, it can be heard in the surrounding area. This causes complaints from local residents.

However, according to the present invention, the location of the intruder can be accurately identified, so the intruder can hear even if the broadcast is made at a low volume, so not only can a warning broadcast be made at a low cost, but civil complaints problems can also be solved. The speaker may be built into the image sensor 30 or the object detection sensor 10, but is not necessarily limited thereto.

As another example, the front detection unit 11 of the object detection sensor 10 detects an object, but the left and right detection units 13 do not detect movement of the object, and as a result of analyzing the vibration pattern, if it is determined that the vibration is caused by a wild animal, a warning is issued. may not be output.

The detection heights of the left detection unit 12 and the right detection unit 13 of the object detection sensor 10 may be determined by considering the height of a large wild animal. In other words, the detection height can be set to a position where wild animals may not be detected even if they approach the fence. Therefore, the probability of outputting a false alarm that mistakes the approach of a wild animal for an intruder can be significantly reduced.

In addition, when an object is detected in the front detection unit 11 of the object detection sensor 10 but is not detected in the left and right detection units and the vibration sensor, it is possible to check whether an inspection signal is received (S140). If inspection signals are being received normally from a plurality of vibration sensors, it can be determined that the intruder is not an intruder.

However, if an object is detected by the front detection unit 11 of the object detection sensor 10 but not by the left and right detection units and the vibration sensor, and an inspection signal is not received within a predetermined time, an intruder approaches the bottom of the fence and pulls the cable. It can be judged that it was cut. Therefore, the area where the cable was cut can be photographed using an image sensor, and the acquired image can be analyzed to secondarily check whether an intruder has entered.

When using the present invention, a physical arrangement method using the vibration sensor 20 and the object detection sensor 10 as well as the cable and the fixing clip 43 is simultaneously utilized to prevent intruders from cutting the fence with very high reliability. It can be sensed.

Although the above description focuses on the examples, this is only an example and does not limit the present invention, and those skilled in the art will be able to You will see that various variations and applications are possible. For example, each component specifically shown in the examples can be modified and implemented. And these variations and differences in application should be construed as being included in the scope of the present invention as defined in the appended claims.

Claims (7)

A plurality of object detection sensors installed on the fence;
A plurality of vibration sensors installed on the fence;
a main cable sequentially connected to the plurality of vibration sensors;
a return cable connected to the last vibration sensor among the plurality of vibration sensors;
A fixing clip that secures the main cable and the return cable to the fence; and
It includes a controller that determines whether there is an intrusion based on information received by the plurality of object detection sensors and the plurality of vibration sensors,
The plurality of object detection sensors each include a front detection unit that detects an object in front, a left detection unit that detects an object on the left, and a right detection unit that detects an object on the right,
The plurality of object detection sensors include a first object detection sensor, a second object detection sensor, and a third object detection sensor arranged to be spaced apart at a first interval,
The controller is connected to the main cable and the return cable,
The detection height of the left detection unit and the right detection unit of the plurality of object detection sensors is set higher than the height at which the plurality of vibration sensors are arranged so that the movement of wild animals is not detected,
When an intruder attempts to breach the fence, it is simultaneously detected by the left detection unit of the first object detection sensor and the right detection unit of the second object detection sensor,
The vibration sensor has an auxiliary detection sensor placed in the front, so that an intruder approaching the fence is first detected by the front detection part of the object detection sensor and then secondarily detected by the auxiliary detection sensor,
The main cable and the return cable are spaced apart at an interval between which an intruder cannot pass, and are fixed to the fence by a fixing clip so that an intruder approaching the fence by crawling or walking can cut the main cable or the return cable or It is installed so that the fence cannot be passed without causing vibration in the fence,
The controller determines whether or not there is an intrusion by combining the detection results of the front, left, and right detectors of the object detection sensor with the detection results of the vibration sensor,
If the object detection signal is not detected in the left detection unit or the right detection unit and the vibration signal is not received after the object detection signal is detected in the front detection unit, the controller transmits the inspection signal transmitted from the controller to the An intrusion detection system that determines that the main cable or return cable has been cut by an intruder if it is not received through the return cable.
According to paragraph 1,
An intrusion detection system wherein the minimum detection height of the left detection unit and the right detection unit of the plurality of object detection sensors is higher than the height at which the plurality of vibration sensors are disposed.
According to paragraph 1,
The controller transmits an inspection signal to the plurality of vibration sensors through the main cable and receives the inspection signal through the return cable, thereby confirming whether the main cable and the return cable are cut.
According to paragraph 1,
The detection area of the left detection part of the second object detection sensor overlaps the detection area of the right detection part of the first object detection sensor,
An intrusion detection system wherein the detection area of the right detection unit of the second object detection sensor overlaps the detection area of the left detection unit of the third object detection sensor.
According to paragraph 1,
If the controller determines that the main cable or return cable has been cut by an intruder,
An intrusion detection system that estimates the cut position of the cable by checking vibration sensors that can communicate through the main cable and simultaneously checking vibration sensors that can communicate through the return cable in both directions.
According to clause 5,
It includes a plurality of image sensors installed on the fence,
The controller collects image information by controlling an image sensor disposed in an area where an intrusion is detected among the plurality of image sensors, and analyzes the collected image information to determine whether there is an intrusion.
According to clause 5,
The plurality of image sensors include a microphone or lighting module,
An intrusion detection system wherein the controller controls the microphone or lighting module to output a warning sound or shine a light on an area where an intrusion is detected among the plurality of image sensors.

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