Invasion sensing system using distance and size measurement

Abstract

The present invention discloses an intrusion detection system comprising: a LiDAR sensor or radar sensor that transmits a signal forward to detect actions performed by an intruder who stays in front of or behind a fence for a certain period of time when attempting to cut the fence or climb over it; a control unit that processes the signal detected by the LiDAR sensor or radar sensor; and an alarm unit and a display unit that notify an administrator of the result processed by the control unit; wherein the LiDAR sensor or radar sensor is installed parallel to the fence while being spaced apart from the fence at a certain distance, and transmits a signal forward while adjusting the transmission distance by the control unit in which the distance for each certain section of the fence is pre-set and stored; wherein a focus adjustment target having a plurality of through holes formed between the LiDAR sensor and a laser receiver is configured, and the attitude of the LiDAR sensor is controlled to correct according to the through holes through which the laser emitted from the LiDAR sensor passes. In the present invention, the size of the object detected is determined according to the through holes through which the laser emitted from the LiDAR sensor passes. In the present invention, the lidar sensor may be composed of a plurality of sensors installed in a direction corresponding to each of the plurality of holes so that the emitted laser passes through a plurality of holes formed in the target and is received by the laser receiving unit.

Description

Technology Field

[0001] The present invention relates to an intrusion detection system through distance and size measurement.

[0002] The present invention is an improvement upon the applicant's prior patent application No. 10-2022-0038835, and is capable of recognizing when the sensor direction changes and determining the detection situation by considering factors such as when the detection range is blocked in whole or in part and the duration of the blockage. Background Technology

[0004] Korean Patent Registration No. 10-1579369 relates to an intrusion detection system using radar, comprising: an intrusion detection radar installed outside a security area; and a plurality of RF (Radio Frequency) reflectors, each installed outside the security area and reflecting the radio signal emitted from the radar in a predetermined direction so that the radio signal travels along the outer edge of the security area. By reflecting the radio signal emitted from the intrusion detection radar to expand the detection distance and area, the number of installed detection radars can be minimized and the undetected area can be reduced.

[0005] However, this technology has the disadvantage that inaccuracy in intrusion detection may increase because it does not disclose a means to ensure accurate reception of radio signals emitted and extended from the radar.

[0006] Korean Patent Publication No. 10-2021-0051555 relates to a smart safety fence system using multiple 2D LiDAR sensors. The smart safety fence system comprises an electronic safety fence module installed on the upper part of a plurality of safety fence supports installed in a safety zone to detect the surroundings, and a control center that receives and analyzes detection data from the plurality of electronic safety fence modules to detect objects within the safety zone. The electronic safety fence module is equipped with an intruder monitoring module having a 2D LiDAR sensor capable of scanning a 360-degree two-dimensional plane, and a wireless communication module that transmits data detected through the intruder monitoring module to the control center via wireless communication. The control center is equipped with a wireless communication module that receives 2D LiDAR sensor detection signals transmitted from the plurality of electronic safety fence modules, and a field situation information analysis server that analyzes 2D LiDAR sensor signals received through the wireless communication module to detect and track moving objects within the safety zone. This allows for the management of entrants using an ICT convergence technology-based safety fence and It enables a proactive response to suspicious individuals, thereby preventing safety accidents that may occur at the site, and strengthens security by isolating the site from the outside.

[0007] However, this technology has the disadvantage that installation costs can increase due to the placement of multiple LiDARs at different locations within the same space, and intrusion monitoring is only possible within the area affected by the LiDAR signal forming a specific zone. Prior art literature

[0009] 1. Korean Patent Registration No. 10-1579369 (Registration Announced Dec. 21, 2015) 2. Korean Patent Publication No. 10-2021-0051555 (Published May 10, 2021) The problem to be solved

[0010] The present invention provides an intrusion detection system using distance and size measurement, wherein a lidar sensor or a radar sensor is installed parallel to a fence to accurately determine whether an intrusion has occurred and the location of the intrusion through a signal transmitted parallel to the fence.

[0011] Another objective of the present invention is to provide an intrusion detection system through distance and size measurement that can accurately identify intrusions by humans rather than wild animals or birds by installing a thermal imaging sensor (PIR) together with a lidar sensor or radar sensor.

[0012] Another objective of the present invention is to provide an intrusion detection system through distance and size measurement, which can increase the accuracy of human intrusion detection by configuring the PIR sensor in planar and three-dimensional forms.

[0013] Another objective of the present invention is to provide an intrusion detection system through distance and size measurement that can increase the accuracy of intrusion detection by installing a shock sensor that detects cable shaking, etc.

[0014] Another objective of the present invention is to provide an intrusion detection system through distance and size measurement, wherein the position of a sensor can be corrected through a means capable of determining when the sensor direction has changed, and the means is formed with a plurality of through holes through which a signal passes, thereby enabling the size of a detected object to be determined based on whether a signal emitted from the sensor passes through.

[0016] The technical problems that the present invention aims to solve are not limited to those mentioned above, and other unmentioned technical problems will be clearly understood by those skilled in the art to which the present invention belongs from the description below. means of solving the problem

[0018] The intrusion detection system of the present invention through distance and size measurement for achieving the above objective is,

[0019] A LiDAR sensor or radar sensor that transmits a signal forward to detect actions performed by an intruder staying in front of or behind the fence for a certain period of time when the intruder attempts to cut the fence or climb over it;

[0020] A control unit that processes signals detected by the above lidar sensor or radar sensor;

[0021] The intrusion detection device comprises an alarm unit and a display unit that notify the manager of the results processed by the above-mentioned control unit, and is composed of an intrusion detection device including an alarm unit and a display unit that notify the manager of the results processed by the above-mentioned control unit.

[0022] The above lidar sensor or radar sensor is installed parallel to the fence at a certain distance from the fence, and

[0023] In an intrusion detection system characterized by transmitting a signal forward while adjusting the transmission distance by the control unit in which the distance for each predetermined section of the fence is pre-set and stored,

[0024] A focus adjustment target having a plurality of through holes formed between the above-mentioned lidar sensor and the laser receiving unit is configured, and

[0025] It is characterized by being controlled to correct the attitude of the lidar sensor according to the through hole through which the laser emitted from the lidar sensor passes.

[0026] The present invention is characterized by determining the size of an object detected according to a through hole through which a laser emitted from a LiDAR sensor passes.

[0027] In the present invention, the lidar sensor is characterized by being composed of a plurality of sensors installed in a direction corresponding to each of the plurality of holes so that the emitted laser passes through a plurality of holes formed in the target and is received by the laser receiving unit. Effects of the invention

[0029] According to the intrusion detection system using distance and size measurement of the present invention, a LiDAR sensor or a radar sensor is installed parallel to the fence so that a signal is transmitted parallel to the fence, thereby detecting intrusion through the fence and accurately determining the point where the intrusion occurred through the measured distance.

[0030] In addition, by installing a thermal sensor along with a lidar or radar sensor to accurately determine human temperature, it is possible to distinguish intrusions caused by wild animals or birds and accurately determine whether an intrusion is caused by a human.

[0031] In addition, the accuracy of detecting human intrusion can be increased by configuring the PIR sensor in planar and three-dimensional forms.

[0032] In addition, the accuracy of intrusion detection can be improved by installing a shock sensor that detects cable shaking.

[0033] In addition, the position of the sensor can be corrected through a means capable of determining when the sensor direction has changed, and the means is formed with a plurality of through holes through which signals pass, so that the size of the detected object can be determined based on whether the signal emitted from the sensor passes through.

[0035] Other effects will be clearly recognizable to a person skilled in the art from the description below. Brief explanation of the drawing

[0037] FIG. 1 is a configuration diagram of an intrusion detection system according to a first embodiment of the present invention. FIG. 2 is a control configuration diagram of the intrusion detection device of FIG. 1. Figure 3 is a conceptual diagram of an intruder being detected by a lidar signal or radar signal. Figure 4 is a diagram showing the area where human intrusion is detected by a PIR signal. FIGS. 5 and FIGS. 6 are structural diagrams of the impact sensor of FIGS. 2. Figure 7 is a configuration diagram of a three-dimensional PIR sensor and a planar PIR sensor. Figure 8 is an example diagram showing the monitoring areas of a three-dimensional PIR sensor and a planar PIR sensor according to the type of intrusion. FIG. 9 is an example diagram showing the intrusion pattern by lidar signals or radar signals and stereoscopic PIR sensors and planar PIR sensors. FIG. 10 is a conceptual diagram of an intruder being detected by a lidar signal or radar signal according to a second embodiment of the present invention. FIG. 11 is a conceptual diagram for determining the size of an intruding object according to a second embodiment of the present invention. FIG. 12 is a configuration diagram of a monitoring system configured with a ring-type data cable transmission network according to a third embodiment of the present invention. FIG. 13 is a configuration diagram of a ring-type data cable transmission network according to a third embodiment of the present invention. Specific details for implementing the invention

[0038] The present invention is capable of various modifications and may have various embodiments, and specific embodiments are illustrated in the drawings and described in detail in the detailed description.

[0039] However, this is not intended to limit the invention to specific embodiments, and it should be understood that it includes all modifications, equivalents, and substitutions that fall within the spirit and scope of the invention.

[0040] The terms used in this invention are used merely to describe specific embodiments and are not intended to limit the invention.

[0041] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by those skilled in the art to which this invention pertains.

[0043] [Preferred form of the invention]

[0044] The present invention discloses an intrusion detection system using distance measurement.

[0045] The present invention may be configured to include a LiDAR sensor or a radar sensor together or by selecting either one. Instead of installing the sensor in front facing the fence, it is installed parallel to the fence at a certain distance so that the signal is transmitted parallel to the fence. Therefore, since the signal is transmitted parallel to the fence while spaced at a certain distance, the signal reaches an intruder attempting to cut the fence or climb over it from the front or back, thereby enabling the detection of intrusion.

[0046] According to this sensor installation method, for example, if the total length of the fence and the signal transmission range are set to match so that the signal transmitted from the sensor reaches the entire length of the fence, intrusion detection for the entire length of the fence becomes possible even with only one sensor installed.

[0047] The present invention allows for the control of signal transmission from a sensor so that the signal is transmitted only for a predetermined distance. In other words, transmission can be performed by setting the distance via a program without a reflector. When configured in this way, if the signal is not transmitted for the set distance, it is possible to determine that an intrusion has occurred at that point. Therefore, intrusion can be detected even if the signal is not reflected from the intruder. At this time, the duration during which signal transmission is obstructed for the set distance is counted, and based on the counted time, it is possible to determine whether the intrusion is intentional by a person, interference by an animal, or interference by natural phenomena. That is, if the obstruction lasts for a long period, it can be determined that the intrusion was caused by a person.

[0048] The present invention can also detect that an intrusion has occurred at the point of reflection when a signal is reflected while the transmission distance of a signal transmitted from a sensor is not preset.

[0049] In another embodiment of the present invention, a thermal imaging sensor (PIR) is installed in conjunction with a lidar sensor or a laser sensor, or at specific intervals along the fence, to detect heat, thereby enabling determination of whether the signal is an intentional intrusion by a person, a signal by an animal, or a signal caused by a natural phenomenon.

[0050] The above thermal sensing sensor is configured with both three-dimensional and planar types to enable thermal detection within the transmission zone of lidar or radar signals, thereby accurately determining intrusion by humans. In other words, based on the electrical signal value where the beam is blocked through integration with the human body detection sensor, it is possible to effectively determine whether a moving object is a living or non-living thing.

[0051] In another embodiment of the present invention, shock sensors that detect shaking of the fence are installed at specific intervals along the fence and processed together with signals detected by a LiDAR sensor, a radar sensor, and a thermal sensor, thereby enabling determination of whether the signal is an intentional intrusion by a person, a signal by an animal, or a signal caused by a natural phenomenon.

[0052] The above-mentioned impact sensor may be installed along with a thermal sensor at specific intervals of the fence to increase the accuracy of intrusion detection. Additionally, the control unit is configured so that the signal transmitted from the LiDAR sensor or radar sensor is transmitted to the area where each impact sensor is installed, so that if the area where signal transmission is obstructed coincides with the area where vibration is detected by the impact sensor, intrusion can be detected in that area.

[0053] In other words, by installing detectors capable of sensing fence vibration, impact, and tension together on the fence, the beam blocking time for intruders can be maximized. This allows for dual verification using a PIR sensor to determine whether the electrical signal value generated by beam blocking due to intrusion is a distance, or whether the cause of continuous or widespread electrical signals resulting from natural phenomena is an object with human heat.

[0054] The present invention combines two PIR sensors to prevent malfunctions of the PIR sensor and improve the reliability of intrusion detection. This configuration may involve combining a three-dimensional type with a wide detection range and a planar type with a narrow detection range capable of detecting over long distances, or by combining Fresnel lenses with different detection angles to create overlapping detection zones. Consequently, malfunctions caused by sudden temperature changes, radiant heat from the ground, heat haze, or fast-flying birds can be prevented.

[0055] Although three-dimensional PIR sensors may frequently malfunction due to contact with the ground and the ground's radiant heat and heat haze, planar PIR sensors and lidar or radar sensors can be installed at a certain height above the ground, thereby reducing malfunctions caused by wild animals. Additionally, lidar or radar signals that are not affected by temperature changes can be processed in combination to improve the disadvantages of three-dimensional PIR sensors.

[0056] In addition, if a PIR sensor that detects only one area is installed alone in a three-dimensional form or a PIR image analysis camera is installed alone, changes in illumination caused by clouds can cause temperature differences, and frequent malfunctions can occur even due to small bushes. Therefore, the invention can prevent malfunctions by installing a PIR sensor in a dual structure of three-dimensional and planar forms and processing signals detected in overlapping areas.

[0057] The present invention presents the following method as an alarm processing method.

[0058] As an actual alarm, it is set to be triggered when a person's temperature is detected in both the three-dimensional PIR sensor detection area and the planar PIR sensor detection area, and if a lidar sensor or radar sensor is additionally installed, it is triggered when all three sensors simultaneously satisfy the detection conditions and also displays the penetration distance.

[0059] As a preliminary alarm, it is configured to be triggered when a person's temperature is detected only within the detection area of ​​a three-dimensional PIR sensor or only at the end point of the detection zone of a planar PIR sensor, or when only distance is detected and the detection duration exceeds a set time.

[0060] In another embodiment of the present invention, a target is set having a plurality of through holes formed between the lidar sensor and the laser receiver, and focus correction, i.e. attitude correction, of the lidar sensor can be performed based on which through hole of the target the laser emitted from the lidar sensor passes through and is received by the laser receiver.

[0061] In addition, as another embodiment, when an object such as an intruder is located between the target and the laser receiver, the intrusion of the object can be determined by analyzing whether the laser is received through a plurality of holes, and at the same time, the size of the object can be determined.

[0063] [Preferred Embodiment of the Invention]

[0064] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings.

[0065] [1st Example]

[0066] FIG. 1 is a configuration diagram of an intrusion detection system according to a first embodiment of the present invention. FIG. 2 is a control configuration diagram of the intrusion detection device of FIG. 1. FIG. 3 is a conceptual diagram of an intruder being detected by a laser signal. FIG. 4 is a diagram of an area where a person's intrusion is detected by a PIR signal.

[0067] As illustrated in FIG. 1, an intrusion detection system according to the first embodiment of the present invention may be composed of an intrusion detection device (1) configured adjacent to a fence to detect an intrusion, a control center (2) that processes an intrusion detection signal transmitted from the intrusion detection device (1), a convergence center (3) that analyzes the intrusion in conjunction with the intrusion detection device (1) and the control center (2), and a terminal (4) that processes an intrusion detection signal transmitted from the intrusion detection device (1).

[0068] The above terminal (4) may be an administrator terminal of the control center (2).

[0069] The above intrusion detection device (1) is composed of various sensors installed adjacent to the fence, a control unit that processes the detection signals of the sensors, and a communication network that transmits the signals processed by the control unit.

[0070] As illustrated in FIG. 2, the intrusion detection device (1) may be composed of a composite detection sensor unit (100) comprising a LiDAR sensor (110) (or radar sensor) that transmits a signal forward, a PIR sensor (120) that detects heat, and a shock sensor (130) that detects shaking (vibration) of a fence, a control unit (100) that processes the signal detected by the composite detection sensor unit (100), a display unit (130) that displays the result processed by the control unit (100) to the outside as a letter, letter, etc., and an alarm unit (140) that displays the result processed by the control unit (100) to the outside as an alarm sound, etc.

[0071] As illustrated in FIG. 3, the lidar sensor (110) may be installed parallel to the fence, and preferably, it may be installed parallel to the fence at a certain distance from the front or back of the fence. This installation is intended to detect whether an intruder approaches the front or back of the fence based on a signal transmitted from the lidar sensor (110), as an intruder must approach the front or back of the fence in order to cut the fence or climb over it.

[0072] As mentioned above, the LiDAR sensor (110) can also be installed behind the fence. In such cases, if an intruder enters without being detected in front of the fence due to reasons such as a malfunction of the detection device, and then attempts to escape through the fence, the fence must be cut or climbed over. As a countermeasure to detect such situations, the accuracy of intruder detection can be improved by enabling double or triple detection of the intruder.

[0073] To explain the installation of the above lidar sensor or radar sensor in more detail, if the lidar sensor (110) is installed at a position approximately 30 to 50 cm away from the fence so that a signal is transmitted in parallel along a position approximately 30 to 50 cm away from the front of the fence, then when an intruder attempts to cut the fence or climb over it, the signal reaches or is reflected to the intruder while he is loitering in front of the fence, so based on this, it is possible to determine which section of the fence the intruder is attempting to enter through.

[0074] For this operation, a program may be stored in the control unit (100), and the transmission distance of the signal transmitted from the LiDAR sensor (110) may be pre-set, and even if not set, the intruder's intrusion zone may be determined based on the reflected distance. Controlling the transmission of the signal by pre-setting multiple signal transmission distances so that the signal is transmitted for the set distances is made possible by storing and managing zone information corresponding to which zone each of the multiple signal transmission distances corresponds to within the entire length of the fence, and this information may be subdivided and stored over the entire length of the fence where intrusion may occur.

[0075] By configuring it in this way, intrusion can be detected according to the transmission status of the signal. If the signal transmitted from the lidar sensor (110) is set to a transmission distance of 100 meters and does not reach 100 meters, the control unit (100) can determine that there is a high probability that an intrusion has occurred.

[0076] In addition, to detect intrusion more accurately, the control unit (100) can use a timer to count the amount of signal reflection and determine whether the intrusion is caused by a person based on the amount of reflection. That is, it can be distinguished into blockage by wild animals, blockage by people, blockage by fixed objects such as rocks, and blockage by natural phenomena. For example, if a person stays for a long time to cut the fence, the amount of reflection may increase.

[0077] In addition, if the signal is controlled to be transmitted over the aforementioned set distance, and the signal is blocked before reaching that distance, the duration of the blockage is counted, and based on that duration, it is possible to determine whether the intrusion was caused by a person. That is, it can be distinguished and determined by blockage by wild animals, human blockage, blockage by fixed objects such as rocks, and blockage by natural phenomena. For example, if a person stays for a long time to cut a fence, the duration of the blockage may be extended.

[0078] For this operation, the control unit (100) has the duration and amount of blocking by a person that may be judged as an intrusion pre-set and stored, and distinguishes whether the blocking is by a wild animal or by a person based on the duration and amount of blocking. In addition, if the duration of blocking is longer than that by a person, it can be determined that an immovable fixed object, such as a rock, is blocking it.

[0079] This operation can be made possible by using timers and comparators, etc.

[0080] In another embodiment of the present invention, a PIR sensor (120) and an impact sensor (130) can be installed at a certain distance, that is, at each certain zone, of the fence, and these can be installed directly on the fence rather than adjacent to the fence. That is, if the PIR sensor (120) and the impact sensor (130) are installed vertically or in reverse at a certain height of the fence, it becomes easy to detect when an intruder attempts to enter through the corresponding zone.

[0081] When the location where the above PIR sensor (120) and shock sensor (130) are installed is stored in the control unit (100), the control unit (100) can control the LiDAR sensor (110) so that a signal is transmitted to that location. In this way, if an intruder attempts to intrude at the location where the PIR sensor (120) and shock sensor (130) are installed, the intrusion can be detected based on the three detection signals of the LiDAR sensor (110), the PIR sensor (120), and the shock sensor (130).

[0082] At this time, the shock sensor (130) can detect the shaking of the fence when the fence is touched to cut or climb over it, even at a slightly distanced distance from the point where the shock sensor (130) is installed, and thus detect this as an intrusion signal. However, if the intensity of the signal detected by the shock sensor (130) is pre-set by distinguishing between the point where the shock sensor (130) is installed and other points, it will be possible to detect whether there is an intrusion more accurately.

[0083] Meanwhile, as another embodiment, the PIR sensor (120) may not be installed in the same location as the impact sensor (130) but may be installed together with the LiDAR sensor (110). When installed in this way, when the LiDAR sensor (110) transmits a signal forward parallel to the fence, the PIR sensor (120) also transmits infrared rays forward parallel to the fence to detect whether it is an intrusion by a person.

[0084] As shown in FIGS. 5 and 6, the impact sensor (130) can be configured so that the left and right sides are symmetrical to each other.

[0085] As shown in FIG. 5, in the first section divided in half of the impact sensor assembly, a cap fixing rod (131a), a cap fixing pin (132a), a cap fixing pin insertion hole (133a) of the second section, and a cap fixing rod insertion hole (134a) of the second section are formed in a line with a magnetic (M) in between, and on the other side, a cap fixing rod (135a), a cap fixing pin (136a), a cap fixing pin insertion hole (137a) of the second section, and a cap fixing rod insertion hole (138a) of the second section are formed in a line.

[0086] In addition, a ledge (151a) (152a) is formed to be separated into left and right sides to prevent rainwater from entering from the outside, and a ledge insertion hole (153a) (154a) of the second section is formed.

[0087] In addition, a ledge (155a) is formed on one side to prevent rainwater from entering from the outside and to prevent the coating agent from overflowing to the outside.

[0088] As shown in FIG. 6, on one side of the second section, an insertion hole (131b) of a cap fixing rod (131a), an insertion hole (132b) of a cap fixing pin (132a), a cap fixing pin (133b) inserted into the insertion hole (133a) of the first section, and a cap fixing rod (134b) inserted into the rod insertion hole (134a) of the first section are formed in a row, and on the other side, a cap fixing rod insertion hole (135b) into which a cap fixing rod (135a) is inserted, a cap fixing pin insertion hole (136b) into which a cap fixing pin (136a) is inserted, a cap fixing pin (137a), and a cap fixing rod (138a) are formed in a row.

[0089] In addition, a ledge (151a) (152a) and an insertion hole (151b) (152b) are formed to be separated left and right so that rainwater, etc. does not enter from the outside, and a ledge (153b) (154b) is formed to be inserted into the insertion hole (153a) (154a) of the first section.

[0090] In addition, a ledge (155b) is formed on one side to prevent rainwater from entering from the outside and to prevent the coating agent from overflowing to the outside.

[0091] When the first and second segments configured in this way are assembled, the assembly structure of the impact sensor can be maintained more strongly, and the inflow of rainwater from the outside can be prevented to prevent malfunctions caused by short circuits, and the leakage of coating agents to the outside can also be prevented to ensure accurate operation of the magnetic sensor.

[0092] Another embodiment of the above PIR sensor is described as follows.

[0093] Figure 7 is a configuration diagram of a three-dimensional PIR sensor and a planar PIR sensor. Figure 8 is an example diagram showing the monitoring areas of the three-dimensional PIR sensor and the planar PIR sensor according to the type of intrusion. Figure 9 is an example diagram showing the type of intrusion by the LiDAR signal or radar signal and the three-dimensional PIR sensor and the planar PIR sensor.

[0094] In another embodiment, to prevent malfunction of the PIR sensor and improve the reliability of intrusion detection, two PIR sensors may be used, configured as a three-dimensional type with a wide detection range and a planar type with a narrow detection range capable of detecting over long distances, or a combination of lenses with different detection angles of Fresnel lenses may be used to create overlapping detection zones.

[0095] Therefore, based on redundant signals, malfunctions caused by sudden temperature changes, ground radiant heat, heat haze, or fast-moving birds can be prevented.

[0096] The above-mentioned three-dimensional PIR sensor is installed in contact with the ground to enable detection from the ground up to the top of the fence, and thus may malfunction due to radiant heat and heat haze from the ground. However, since planar PIR sensors and lidar or radar sensors are installed at a certain height above the ground, malfunctions caused by wild animals can be reduced, and the disadvantages of the three-dimensional PIR sensor can be improved by processing them in combination with lidar or radar signals that are not affected by temperature changes.

[0097] In other words, if a PIR sensor is installed exclusively in a three-dimensional form to detect only one area, changes in illumination caused by clouds can result in temperature differences, and frequent malfunctions can occur even due to small bushes. Therefore, by installing the PIR sensor in a combined structure of three-dimensional and planar forms and processing the signals detected in the overlapping areas, malfunctions can be prevented.

[0098] According to such an embodiment, the following operational effects can be obtained.

[0099] While PIR sensors can generate false alarms due to temperature changes or malfunctions caused by the movement of wild animals of a certain size, radar or lidar sensors are not affected by temperature changes and can prevent false alarms by accurately distinguishing between wild animals and intruders using patterns such as the movement patterns of wild animals and birds, walking speeds of humans, and movement and delay times at specific points within the surveillance area during attempts to cut or climb over fences.

[0100] In addition, if the maximum detection distance set according to fog concentration becomes shorter or longer, or if a phenomenon occurs where multiple distances are calculated simultaneously due to heavy rain or hail, false alarms can be prevented by resetting the composite signal of the three-dimensional PIR sensor, planar PIR sensor, radar sensor, or lidar sensor to perform signal processing appropriate to the weather conditions.

[0101] An example of intrusion detection using a LiDAR sensor or laser sensor and a PIR sensor configured as described above is as follows.

[0102] In the following, the detection of a distance measurement signal means that the radar sensor signal or lidar sensor signal is blocked at a predetermined distance (location), and the detection of stereoscopic PIR sensor and planar PIR sensor signals means that the PIR signal is detected at the point where the aforementioned radar sensor signal or lidar sensor signal is blocked. Additionally, the angle of the signal can be adjusted using a lidar sensor or radar sensor through a Fresnel lens, etc. In other words, it should be understood that if the signal is not transmitted horizontally relative to the ground, the signal transmission angle is adjusted through a lens. The reason for adjusting the transmission angle of the distance measurement signal is that intrusion does not necessarily occur only at a fixed height.

[0103] 1. If both distance measurement signal 1 and the stereoscopic PIR sensor signal are detected at a predetermined location (distance) and maintained for a certain period of time or longer, it is determined to be an intrusion, and if it is temporary, it is determined to be a wild animal or bird.

[0104] 2. When distance measurement signal 2 and signals from both the stereoscopic PIR sensor and the planar PIR sensor are detected, the object is considered to be in close contact with the fence, that is, it is judged to be floating in the air and is judged to be a bird.

[0105] However, if the detection state persists for a certain period of time or longer, it is determined to be an intrusion, and if signal 3 is also detected at the same location at the same time, it is determined to be ladder intrusion or fence climbing.

[0106] 3. If distance measurement signal 3 and stereoscopic PIR sensor signal are detected simultaneously, it is determined to be a flying animal.

[0107] However, if a preliminary alarm continues to occur for longer than the set time and the signal blocking time becomes prolonged, it is determined to be an intrusion using a ladder.

[0108] 3. When distance measurement signals 1 and 2 and the values ​​of the three-dimensional PIR sensor and the planar PIR sensor are simultaneously detected at a predetermined location, it is determined to be an attempt to cut the fence and climb over it.

[0109] 4. If distance measurement signals 1, 2, and 3 are all detected at a predetermined location and the signals from the three-dimensional PIR sensor and the planar PIR sensor are also detected simultaneously, it is determined to be an intrusion.

[0110] 5. When distance measurement signals 1, 2, 3, N-1, and N are detected sequentially at a predetermined location on a flat surface, and a three-dimensional PIR sensor signal and a planar PIR sensor signal are also detected, the moving speed and distance are calculated to distinguish between birds, small animals, and intruders.

[0111] 6. When a distance measurement signal, a planar PIR sensor, and a three-dimensional PIR sensor signal are detected sequentially from the front on a flat surface, the moving speed and distance traveled are calculated to distinguish between birds, small animals, and intruders.

[0112] 7. If the detection distance of the distance measurement signal becomes irregular or the maximum detection distance shortens, it is determined that weather conditions such as fog, hail, or heavy rain have occurred, and the settings are reset according to the weather conditions. All such matters are performed remotely via the operation server software.

[0114] [2nd Example]

[0115] FIG. 10 is a conceptual diagram of an intruder being detected by a lidar signal or radar signal according to a second embodiment of the present invention. FIG. 11 is a conceptual diagram of determining the size of an intruder object according to a second embodiment of the present invention.

[0116] According to the second embodiment of the present invention, as shown in FIG. 10, a target (300) is configured between the lidar sensor (110) and the laser receiving unit (200).

[0117] The target (300) transmits a laser signal transmitted from the lidar sensor (110) to a laser receiving unit (200) through a through hole (310) formed to adjust the lidar focus (up, down, left, right). At this time, the signal received by the laser receiving unit (200) is transmitted to a control center (2) to correct the attitude, i.e., focus, of the lidar sensor (110) in real time. The transmission of the detection data may utilize a data communication network according to the third embodiment.

[0118] When the distance from the LiDAR sensor (110) to the target (300) is 50m, if the laser emission angle is shifted by a certain angle, for example, 1° (moved), the laser reaches a point at the target (300) that is moved a certain distance, for example, 130cm. That is, when the distance between the LiDAR sensor (110) and the target (300) is set to a certain distance and the LiDAR sensor (110) and the target (300) are installed facing each other, as the laser emission direction from the LiDAR sensor (110) moves by a certain angle, the point at which the laser reaches the target (300) also moves a certain distance. If the laser emission angle shifts further, the point at which the laser reaches the target (300) will also move further.

[0119] Therefore, when a laser is emitted from the lidar sensor (110), the position of the lidar sensor (110) is corrected by analyzing which of the five holes (310 to 350) formed in the target (300) the laser passes through.

[0120] To this end, the target (300) is configured with a communication module and a control device. When a signal related to the through hole through which the laser has passed is transmitted to the control center (2) via the communication module, the control center (2) transmits a correction signal to the lidar sensor (110) based on this signal to correct the position. To this end, the lidar sensor (110) may be configured with a position correction module and a control device.

[0121] The position correction of the above LiDAR sensor (110) may also be performed manually by an administrator.

[0122] In addition, the detection device may be configured with a warning lamp (180) to display the misalignment of the lidar sensor (110) in real time.

[0124] As another embodiment, the size of the intruder and the detected object can be determined using the configuration shown in FIG. 18.

[0125] If an intruder is positioned between the target (300) and the laser receiver (200), the laser signal transmitted to the laser receiver (200) through the target (300) is also blocked, so an intrusion can be determined by utilizing this situation.

[0126] If a laser emitted from a LiDAR sensor (110) is passed through multiple holes (310) simultaneously, the laser received by the laser receiving unit (200) is analyzed, and the size (height) of the detected object can also be determined based on whether the laser is received by the laser receiving unit (200) through the holes, for example.

[0127] If the target (300) is manufactured and installed such that the height of the through hole (310) of the target (300) is positioned at a height of 170 cm from the ground, which is comparable to the height of a person, and the laser receiving unit (200) is configured to receive a laser passing through the through holes (310, 320, 330, 340, 350), and the laser is not received by the laser receiving unit (200) through all the through holes, it can be determined that an object of 170 cm or more has intruded.

[0128] As another example, if the laser is not received through the through hole (350) but is received through the through holes (310, 320, 330, 340), the size of the object can be determined by applying the height of the through hole (350).

[0129] Meanwhile, the above-mentioned lidar sensor (110) can detect intrusion by installing multiple sensors in a direction corresponding to each of the multiple holes (310, 320, 330, 340, 350) formed in the target so that the emitted laser passes through the multiple holes and is received by the laser receiving unit (200).

[0130] In addition, if a laser signal emitted from the lidar sensor (110) is not received by the laser receiver (200) due to fog or the like, the detection distance is shortened, and the situation in which a detection blind spot occurs is reported to the control center, thereby enhancing the perimeter security effect.

[0131] That is, if the laser emitted from the lidar sensor (110) is not received by the laser receiving unit (200) through all the holes formed in the target (300), it can be determined that the laser transmission is blocked due to fog, etc.

[0133] [3rd Example]

[0134] FIG. 12 is a configuration diagram of a monitoring system configured with a data cable transmission network according to a third embodiment of the present invention. FIG. 13 is a configuration diagram of a ring-type data cable transmission network according to a third embodiment of the present invention.

[0135] As illustrated in FIG. 12, signals are transmitted and received between a monitoring system (control center) (900) and a detection device (not shown) in which a crime prevention detection operation is performed, via a data cable (800). A crime prevention detection signal can be transmitted from the detection device to the monitoring system, and a control signal for controlling the detection device can be transmitted from the monitoring system to the detection device.

[0136] That is, the transmitter (600) and the receiver (700) are configured so that detection data transmitted from the detection device is transmitted to the monitoring system (900) through the data cable (800), and a control signal transmitted from the monitoring system (900) can be transmitted to the detection device through the data cable (800).

[0137] A rechargeable power supply unit (950) is connected to the transmitter (600) and receiver (700) above so that even if the power to the detection device or monitoring system is turned off, rechargeable power is supplied so that there is no hindrance to the transmission and reception of detection signals and control signals.

[0138] In addition, a disconnection detector (850) is configured in the data cable (800) to detect whether the cable is disconnected.

[0139] The disconnection detection signal detected by the above disconnection detector (850) is transmitted to the monitoring system (900) to determine whether the power line or the communication line is disconnected, and to allow the manager to take appropriate action.

[0140] In addition, between the power supply unit (950), the transmitter (600), and the receiver (700), a power control means, such as a relay, is configured, for example, to control the power supply under the control of the monitoring system (900) and to control the transmission and reception of the security and disaster prevention detection signal.

[0141] The monitoring system (900) can, for example, control the rechargeable power supply unit (950) so that power is not supplied to the transmitter (600) and receiver (700) when there is no detection signal from the detection device.

[0142] Additionally, the monitoring system (900) can control the power supply unit (950) so that the power is interrupted for a certain period of time using a self-configured timer means. That is, during the time when a security and disaster prevention signal is frequently detected from the detection device, the power supply from the rechargeable power supply unit (950) to the transmitter (600) and receiver (700) is normally carried out in the event of an abnormality in the system power, whereas during the time when a security and disaster prevention signal is not frequently detected from the detection device, the rechargeable power supply unit (950) can be controlled so that the power supply from the rechargeable power supply unit (950) to the transmitter (600) and receiver (700) is not carried out even if an abnormality in the system power occurs.

[0143] Meanwhile, the monitoring system (900) can control the power supply unit of the detection device or the monitoring system to supply or cut off the system power by distinguishing between times when the probability of detecting a crime prevention signal is high and times when it is not high, even when the system power is supplied normally.

[0144] Additionally, the monitoring system (900) is networked wirelessly or wired with multiple administrator terminals, and when a crime prevention and disaster prevention detection signal is transmitted from a detection device, it processes the signal and transmits necessary messages via text or other means of communication to enable the multiple administrator terminals to take countermeasures against crime prevention and disaster prevention.

[0145] At this time, among the multiple administrator terminals that have read the above message, the administrator terminal that is currently waiting without going to the crime prevention and disaster prevention site can be distinguished, and additional necessary messages can be transmitted to the corresponding administrator terminal so that response measures regarding crime prevention and disaster prevention can be taken. To this end, the monitoring system (900) can identify the location of the administrator in real time and store and update it in the database.

[0146] As illustrated in FIG. 13, the data cable (800) may be composed of a total of four strands (810 to 840) between a set of transmitters (600) and receivers (700), for example, two strands (810, 820) may be used as communication lines and the remaining two strands (830, 840) may be used as power lines. However, it is not necessarily limited to these specifications.

[0147] In the data communication network of the present invention configured as described above, since a rechargeable power supply unit (950) is additionally configured, signal transmission between the transmitter (600) and the receiver (700) can be performed normally even if an abnormality occurs in the system power supply.

[0148] Additionally, the data cable (800) is composed of two communication lines and two power lines, each equipped with a detector (850). When an abnormality occurs in the cable, it is detected by the detector (850), and the detection data is transmitted to the monitoring system (900). Therefore, the monitoring system (900) can identify the communication line or power line where the abnormality occurred and restore it quickly. To this end, the monitoring system (900) stores information regarding the data cable configuration in a database.

[0149] In addition, even if all communication lines configured in a set of transmitters and receivers are disconnected, other sets of transmitters and receivers operate normally, so the operation of transmitting data detected by the detection device to the monitoring system (900) through the data cable (800) can be performed normally.

[0150] In this third embodiment, a rechargeable power supply unit (950) is configured to prepare for a short circuit of the power line, so that at the moment of the short circuit of the power line, power is supplied from the rechargeable power supply unit (950) and signal transmission and reception can be performed normally.

[0151] In addition, even if one of the two power lines and two communication lines is disconnected, signal transmission and reception are possible using the remaining power lines and communication lines, and even if all communication lines are disconnected, signal transmission and reception are possible using other communication lines.

[0153] As explained above, the detailed description of the present invention describes preferred embodiments of the invention; however, this is merely an illustrative description of the best embodiments of the invention and is not intended to limit the invention. Furthermore, it is understood that anyone skilled in the art to which the present invention pertains can make various modifications and imitations within the scope of the technical concept of the invention without departing from its spirit.

[0154] Accordingly, the scope of the present invention is not limited to the embodiments described above but may be implemented in various forms of embodiments within the scope of the appended claims. Furthermore, it is deemed that the scope of the claims of the present invention includes various modifications that are possible by anyone with ordinary knowledge in the technical field to which the invention belongs, without departing from the essence of the invention claimed in the claims. Explanation of the symbols

[0156] 1 : Intrusion detection device 2 : Control center 3 : Convergence Center 4 : Terminal 100: Control unit 110: LiDAR sensor 120, 125, 127 : PIR sensor 130 ; Impact sensor 140 : Display unit 150 : Alarm unit 200 : Laser receiver 300 : Target 310, 320, 330, 340, 350 : Communion

Claims

Claim 1 An intrusion detection system comprises: a LiDAR sensor (110) that transmits a signal forward to detect actions performed by an intruder who stays in front of or behind the fence for a certain period of time when attempting to cut the fence or climb over it; an impact sensor (130) installed on the fence to detect shaking of the fence caused by the intruder; a control unit (100) that processes signals detected by the LiDAR sensor (110) and the impact sensor (130); an alarm unit (150) and a display unit (140) that inform an administrator of the results processed by the control unit (100); wherein the LiDAR sensor (110) is installed parallel to the fence while spaced apart from the fence at a certain distance, and transmits a signal forward while the transmission distance stored in each certain section of the fence is adjusted by the control unit. In this intrusion detection system, the impact sensor (130) is configured such that when an intruder enters, the magnetic (M) shakes and induces voltage to provide an intrusion signal, and on one side thereis a cap fixing device with the magnetic (M) in between. A first section having a rod (131a), a cap fixing pin (132a), a cap fixing pin insertion hole (133a) of the second section, and a cap fixing rod insertion hole (134a) of the second section formed in a row, and on the other side, a cap fixing rod (135a), a cap fixing pin (136a), a cap fixing pin insertion hole (137a) of the second section, and a cap fixing rod insertion hole (138a) of the second section formed in a row, and a ledge (151a) (152a) formed to be separated left and right to prevent rainwater from entering, and a ledge insertion hole (153a) (154a) of the second section formed, and a ledge (155a) formed on one side to prevent rainwater from entering and to prevent the coating agent from overflowing to the outside; The insertion hole (131b) of the cap fixing rod (131a), the insertion hole (132b) of the cap fixing pin (132a), the cap fixing pin (133b) inserted into the insertion hole (133a) of the first section, and the cap fixing rod (134b) inserted into the rod insertion hole (134a) of the first section are formed in a row.On the other side, a cap fixing rod insertion hole (135b) into which a cap fixing rod (135a) is inserted, a cap fixing pin insertion hole (136b) into which a cap fixing pin (136a) is inserted, a cap fixing pin (137a), and a cap fixing rod (138a) are formed in a line, and a ledge (151a) (152a) insertion hole (151b) (152b) formed to be separated left and right so that rainwater, etc. does not enter from the outside, and a ledge (153b) (154b) inserted into the insertion hole (153a) (154a) of the first section are formed, and a ledge (155b) formed on one side to prevent rainwater from entering from the outside and to prevent the coating agent from overflowing to the outside is formed; and a focal point having a plurality of through holes (310~350) formed between the lidar sensor (110) and the laser receiving unit (200). A control target (300) is configured, and the LiDAR sensor (110) is configured with multiple sensors installed in a direction corresponding to each of the multiple holes so that the emitted laser passes through multiple holes formed in the target and is received by the laser receiving unit. The control unit (100) counts the amount of signal reflection and determines whether it is caused by a person, wild animal, fixed object, or natural phenomenon based on the amount of reflection, and sets the duration of signal blocking caused by a person, wild animal, fixed object, or natural phenomenon. When the signal transmitted from the LiDAR sensor (110) is blocked before reaching the set distance, the control unit (100) counts the duration of signal blocking and determines whether it is blocked by a person, wild animal, fixed object, or natural phenomenon based on the duration of blocking. The control unit (100) controls the LiDAR sensor (110) to correct its attitude according to the holes through which the laser emitted from the LiDAR sensor (110) passes, and causes the laser emitted from the LiDAR sensor (110) to pass through multiple holes (310 ~ 350) simultaneously so that the laser Analyzes the laser received from the light receiving unit (200), and determines the size of the detected object based on whether the laser is received or not received by the laser receiving unit (200) through the through hole,An intrusion detection system through distance and size measurement, characterized in that the height of the through hole (310) of the target (300) is positioned at 170 cm from the ground, and the laser receiving unit (200) is configured to receive a laser passing through the through hole (310 ~ 350); if the laser is not received by the laser receiving unit (200) through all the through holes (310 ~ 350), it is determined that an object of 170 cm or more has intruded; and if the laser signal emitted from the lidar sensor (110) is not received by the laser receiving unit (200), it is determined that the detection distance has been shortened, a detection blind spot has occurred, or laser transmission is blocked due to fog. Claim 2 delete Claim 3 delete

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