Invading sensing system using position analisis by composite cable occuring magnetic induction signal, microwave signal, electris chagre and optical signal

Abstract

The first embodiment of the present invention discloses an intrusion detection system comprising: an intrusion detection device configured adjacent to a fence to detect intrusion; a control center processing an intrusion detection signal transmitted from the intrusion detection device; a fusion center analyzing intrusion in conjunction with the intrusion detection device and the control center; and a terminal processing an intrusion detection signal transmitted from the intrusion detection device. The intrusion detection device comprises: a sensor unit comprising: an active conductor through which current supplied via a power supply flows; an optical cable located between the active conductors to generate an optical signal; and a magnet provided on the inner or outer side of the composite cable to generate a magnetic induction signal together with the active conductors; a control unit that processes the signal detected by the sensor unit to determine the location of the intrusion; a display unit that displays the result processed by the control unit externally as a character or text; and an alarm unit that displays the result processed by the control unit externally as an alarm sound. A second embodiment of the present invention discloses an intrusion detection system utilizing location analysis by a composite cable in which magnetic induction signals and microwave signals are generated in combination, characterized in that the intrusion detection device comprises: an active conductor through which current supplied via a power supply flows; a central conductor located between the active conductors and generating a microwave signal; a permanent magnet provided inside the composite cable and generating a magnetic induction signal together with the active conductors; a control unit that processes a signal detected by the sensor unit to determine the intrusion location; a display unit that displays the result processed by the control unit externally as a character or text; and an alarm unit that displays the result processed by the control unit externally as an alarm sound.A third embodiment of the present invention discloses an intrusion detection system utilizing location analysis by a composite cable in which an optical signal, a charge signal, and an optical signal are generated in combination, characterized by comprising: a sensor unit comprising: an optical cable in which an intrusion detection device is inserted into a tube to generate an optical signal; and a metal plate provided inside a composite cable to generate an electric signal; a control unit that processes the signal detected by the sensor unit to determine the intrusion location; a display unit that displays the result processed by the control unit as a character or text to the outside; and an alarm unit that displays the result processed by the control unit as an alarm sound to the outside.

Description

Technology Field

[0001] The present invention relates to an intrusion detection system using location analysis by a composite cable in which magnetic induction signals, microwave signals, electric signals, and optical signals are generated in combination.

[0002] More specifically, the present invention enables accurate determination of intrusion status and intrusion location by arranging an optical cable in association with a magnet.

[0003] The present invention also enables accurate determination of whether an intrusion has occurred and the location of the intrusion by arranging an optical cable in conjunction with a charge quantity signal generating means. Background Technology

[0005] To control and monitor specific areas requiring security and guarding from external intruders, fences or walls are installed at key facilities. Conventionally, various types of unmanned surveillance equipment and devices have been installed for this purpose. These methods included installing fences or walls and laying closed-circuit optical cables over them, installing laser or infrared sensors, or installing unmanned cameras.

[0006] However, although expensive surveillance equipment such as laser devices and fiber optic cables are installed for security and surveillance, there is a problem in that sufficient effectiveness is not achieved relative to the cost, and there is also a problem in that a large amount of money is required to restore security facilities after an intrusion.

[0007] Utility Model Registration No. 20-0392070 relates to an intruder detection system using optical fibers, comprising: a light source supplying a certain optical signal; an optical fiber connected to the light source and receiving and transmitting an emitted optical signal; a plurality of frames on which the optical fiber is fixedly installed; a fixing means for fixing the optical fiber to the frames; and a photodetector for detecting emitted light through the optical fiber. In this intruder detection system using optical fibers, the optical fiber includes an optical fiber protection member installed to surround the outer surface of the optical fiber to protect the optical fiber, and the optical fiber protection member is installed in the optical fiber between at least one frame and an adjacent frame. By installing the optical fiber protection member on the outer surface of the optical fiber, sagging or stretching of the optical fiber due to temperature changes caused by external factors is prevented, and the optical fiber is protected from detrimental factors due to external weather conditions, thereby preventing the occurrence of disturbances and rapid aging.

[0008] Patent Registration No. 10-0722011 relates to an integrated monitoring system using a fiber optic sensor. In an FTTH system configured such that a fiber optic line termination device coupled to a predetermined service provision network is coupled to a plurality of in-home devices through a fiber optic distribution network, the in-home device comprises: a splitter that separates an optical signal applied from the fiber optic distribution network at a predetermined ratio and provides it to a fiber optic subscriber termination device coupled to a subscriber terminal and a monitoring device, respectively; a sensor unit comprising a fiber optic cable of a certain length and a reflector coupled to the end of the fiber optic cable; a control means that determines whether an intrusion has occurred based on a change in the signal level of reflected light applied from the sensor unit and provides predetermined monitoring information to the monitoring information processing device upon detection of an intrusion; and a monitoring information processing device coupled to a webcam that drives the webcam based on monitoring information applied from the monitoring device and stores captured information captured through the webcam. In this manner, the optical signal flowing into the home in the FTTH system is utilized as a light source for intrusion detection, and By configuring the optical sensor with low-cost optical fibers, it detects intrusion into the home at low cost, and when intrusion is detected, it activates a webcam and provides the captured information to the security company and the subscriber's terminal, thereby enabling a rapid response to the intrusion into the home.

[0009] Patent Registration No. 10-0842174 relates to an intruder detection device and method using an optical fiber grating sensor, comprising a measurement system for an optical fiber grating sensor, an optical fiber for transmitting an optical signal, and one or more optical fiber grating sensors that generate reflected light; wherein the optical fiber for transmitting the optical signal simultaneously performs the roles of optical signal transmission and detection; wherein the one or more optical fiber grating sensors are spaced apart so that the tensile force of the detection optical fiber is not transmitted to the optical fiber grating sensor to distinguish the detection zone; wherein the detection optical fiber has a circular path; and wherein the change in the intensity of reflected light of the one or more optical fiber grating sensors is measured to determine whether an intrusion has occurred, the method is provided to determine whether an intrusion has occurred by detecting changes in the intensity and number of wavelengths reflected from the optical fiber grating sensor after the detection optical fiber is installed separately from the detection optical fiber so that the tensile force of the detection optical fiber is not transmitted to the optical fiber grating element, and when light loss occurs due to cutting or tension in the optical fiber of the detection optical fiber. Furthermore, by using an optical switch, the intrusion detection zone can be increased by more than 10 times compared to the existing method.

[0010] However, since the aforementioned conventional technologies only monitor areas requiring security using optical signals, there is a need to improve the precision in identifying whether an intrusion has occurred and where the intrusion is located. Prior art literature

[0012] 1. Utility Model Registration No. 20-0392070 (Registered July 29, 2005, Title: Intruder Detection System Using Optical Fiber) 2. Patent Registration No. 10-0722011 (Registered May 18, 2007, Title: Integrated Monitoring System Using Optical Fiber Sensor) 3. Patent Registration No. 10-0842174 (Registered June 23, 2008, Title: Intruder Detection Device and Method Using Optical Fiber Grid Sensor) The problem to be solved

[0013] The present invention provides an intrusion detection system using location analysis by a composite cable in which magnetic induction signals, microwave signals, electric signals, and optical signals are generated in combination, wherein, when a magnetic induction signal is generated by associating the optical cable with a magnet, a microwave signal is generated by associating the magnet and a central conductor, or an electric signal is generated by associating the optical cable with a metal plate, these signals are processed by selectively associating them with optical signals to accurately determine whether an intrusion has occurred and the location of the intrusion.

[0015] 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

[0017] An intrusion detection system using location analysis by a composite cable in which a magnetic induction signal and an optical signal are generated in combination according to the first embodiment of the present invention for achieving the above objective is

[0018] An intrusion detection device configured adjacent to a fence to detect intrusion;

[0019] A control center that processes intrusion detection signals transmitted from the above intrusion detection device;

[0020] A convergence center that analyzes intrusions in conjunction with the above-mentioned intrusion detection device and control center; and

[0021] An intrusion detection system comprising a terminal that processes an intrusion detection signal transmitted from the above-mentioned intrusion detection device,

[0022] The above intrusion detection device is

[0023] An active conductor through which current supplied via a power supply flows;

[0024] An optical cable positioned between the above active conductors to generate an optical signal;

[0025] A sensor part comprising a magnet provided on the inner or outer side of the composite cable and generating a magnetic induction signal together with the active conductor;

[0026] A control unit that processes the signal detected by the sensor unit to determine the intrusion location;

[0027] A display unit that displays the result processed by the above control unit externally as characters; and

[0028] It is characterized by being configured with an alarm unit that displays the result processed by the above-mentioned control unit as an alarm sound to the outside.

[0030] An intrusion detection system using location analysis by a composite cable in which a magnetic induction signal and a microphone signal are generated in combination according to a second embodiment of the present invention for achieving the above objective is

[0031] An intrusion detection device configured adjacent to a fence to detect intrusion;

[0032] A control center that processes intrusion detection signals transmitted from the above intrusion detection device;

[0033] A convergence center that analyzes intrusions in conjunction with the above-mentioned intrusion detection device and control center; and

[0034] An intrusion detection system comprising a terminal that processes an intrusion detection signal transmitted from the above-mentioned intrusion detection device,

[0035] The above intrusion detection device is

[0036] An active conductor through which current supplied via a power supply flows;

[0037] A central conductor located between the above active conductors and generating a microwave signal;

[0038] A sensor unit composed of a permanent magnet provided inside the composite cable and generating a magnetic induction signal together with the active conductor;

[0039] A control unit that processes the signal detected by the sensor unit to determine the intrusion location;

[0040] A display unit that displays the result processed by the above control unit externally as characters; and

[0041] It is characterized by being composed of an alarm unit that displays the result processed by the above-mentioned control unit as an alarm sound to the outside.

[0043] An intrusion detection system using location analysis by a composite cable in which a combined electrical signal and an optical signal are generated according to the third embodiment of the present invention for achieving the above objective is

[0044] An intrusion detection device configured adjacent to a fence to detect intrusion;

[0045] A control center that processes intrusion detection signals transmitted from the above intrusion detection device;

[0046] A convergence center that analyzes intrusions in conjunction with the above-mentioned intrusion detection device and control center; and

[0047] An intrusion detection system comprising a terminal that processes an intrusion detection signal transmitted from the above-mentioned intrusion detection device,

[0048] The above intrusion detection device is

[0049] Optical cable inserted into a tube to generate an optical signal;

[0050] A sensor unit composed of a metal plate provided inside a composite cable that generates a charge signal;

[0051] A control unit that processes the signal detected by the sensor unit to determine the intrusion location;

[0052] A display unit that displays the result processed by the above control unit as characters or letters to the outside;

[0053] It is characterized by being composed of an alarm unit that displays the result processed by the above-mentioned control unit as an alarm sound to the outside. Effects of the invention

[0055] According to the intrusion detection system using location analysis by a composite cable in which a magnetic induction signal, a microwave signal, a charge quantity signal, and an optical signal are generated in combination according to the present invention, the presence of an intrusion and the location of the intrusion can be accurately determined by selectively processing the magnetic induction signal, the microwave signal, or the charge quantity signal in conjunction with the optical signal.

[0057] Other effects will be clearly recognizable to a person skilled in the art from the description below. Brief explanation of the drawing

[0059] 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 configuration diagram of the sensor unit of Figure 2. FIG. 4 is a configuration diagram of a sensor unit according to another embodiment of FIG. 3. FIG. 5 is a configuration diagram of a sensor unit according to a second embodiment of the present invention. FIGS. 6 and 7 are configuration diagrams of a sensor unit according to a third embodiment of the present invention. FIGS. 8 and 9 are configuration diagrams of a sensor unit according to another embodiment of FIGS. 6 and 7. FIG. 10 is an exemplary diagram showing the sensor unit of the present invention installed on a fence. FIGS. 11a to 11d are waveform changes according to changes in the state of the fence when the composite cable of the present invention is installed on the fence. Specific details for implementing the invention

[0060] 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.

[0061] 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.

[0062] The terms used in this invention are used merely to describe specific embodiments and are not intended to limit the invention.

[0063] 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.

[0065] [Preferred form of the invention]

[0066] An intrusion detection system using a composite cable is disclosed in part similarly to the prior art inventions of this application, such as Patent No. 10-2405430 and Patent No. 10-2405431, etc.

[0067] The present invention is an invention that is further advanced from the concept of the above-mentioned patent invention, and discloses an intrusion detection system using location analysis by a composite cable in which magnetic induction signals, charge signals, and optical signals are generated in combination, wherein the system is capable of accurately determining the presence of intrusion and the location of intrusion by processing these signals in conjunction with optical signals when a magnetic induction signal is generated by associating the optical cable with a magnet or when a charge signal is generated by associating the optical cable with a charge signal generating means.

[0068] The present invention provides a system capable of accurately determining whether an intruder is entering while impacting a fence and the location of the intrusion by selectively combining a central conductor, an active conductor, a magnet, a metal plate, and an optical cable within a cable serving as a sheath, and processing a composite signal of magnetic induction signals and optical signals, processing a composite signal of magnetic induction signals and microwave signals, and processing a composite signal of electric charge signals and optical signals.

[0069] As described above, the central conductor and active conductor generate magnetic induction signals or microwave signals in conjunction with a magnet, the metal plate generates an electric charge signal, and the optical cable generates an optical signal, respectively, which are used to accurately determine the intrusion and the location of the intrusion.

[0070] In the present invention, the central conductor, the active conductor, the magnet, the metal plate, and the optical cable all move as the fence shakes or is subjected to impact, thereby generating a magnetic field signal, a microwave signal, an electric charge signal, and an optical signal, respectively.

[0072] [Preferred Embodiment of the Invention]

[0073] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings.

[0074] [1st Example]

[0075] 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 configuration diagram of the sensor unit of FIG. 2. FIG. 4 is a configuration diagram of the sensor unit according to another embodiment of FIG. 3.

[0076] As illustrated in FIGS. 1 and 2, 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 fusion 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).

[0077] The above terminal (4) may be an administrator terminal of the control center (2).

[0078] The above intrusion detection device (1) is composed of various sensors installed in direct contact with or 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.

[0079] As illustrated in FIGS. 2 to 4, the intrusion detection device (1) may be composed of a sensor unit (100) which is provided within a composite cable (10) and consists of an active conductor (110) (120) through which current flows when power is applied, an optical cable (130) located between the active conductors (110) (120), and a permanent magnet (140) that is in close contact with the outside of the cable (10); a control unit (150) that processes a signal detected by the sensor unit (100); a display unit (160) that displays the result processed by the control unit (150) to the outside as a character, character, etc.; and an alarm unit (170) that displays the result processed by the control unit (150) to the outside as an alarm sound, etc.

[0080] In FIG. 2, the magnetic induction sensor (151) is a sensor comprising an active conductor (110)(120) and a magnet (140).

[0081] As illustrated in FIG. 3, the sensor unit (110) is configured within a composite cable (10) and may be composed of an active conductor (110) (120) positioned perpendicularly to a permanent magnet (140), an optical cable (130), and a permanent magnet (140). At this time, the active conductor (110) (120), the optical cable (130), and the permanent magnet (140) may all be positioned in close contact.

[0082] By configuring them in close contact like this, shaking caused by a fence impact can be detected as a single unit. That is, the active conductor (110 (120), the optical cable (130), and the permanent magnet (140) move together in almost equal amounts, and a magnetic induction signal and an optical signal are obtained.

[0083] Unexplained symbols, 120 is a tube (sheath), and 180 is an insulator.

[0084] The first embodiment is a structure that generates an electromotive force by moving a magnetic field generated by a magnetic field from a permanent magnet (140) and a current flowing through an active conductor (110) (120) at a right angle.

[0085] In addition, an optical cable (130) is inserted in the center, and an OTDR (Optical Time Domain Reflectometer) is used to detect the intrusion location by subdividing the distance between fence posts into sections within 3m when vibration or impact is detected in a predetermined section of the fence.

[0086] Accordingly, the first embodiment can improve the difficulties in intrusion analysis that occur when there is no change in the magnetic field or only a weak change in kinetic energy when slowly bending or pressing, by processing the detection signal in combination with the magnetic field signal and the optical signal.

[0087] In another embodiment, the permanent magnet (140) of the sensor unit (100) may be configured inside the composite cable (10) as shown in FIG. 4. That is, in the configuration of FIG. 3, the magnet (140) is configured on the outer surface of the composite cable (10), so it may be separated from the composite cable (10) due to the influence of natural phenomena such as fence impact or wind and rain, for example, but in FIG. 4, this disadvantage is compensated for.

[0088] At this time, the active conductor (110)(120) and the optical cable (130) may be placed at a predetermined distance apart. A magnet is also placed in the space formed at the predetermined distance, so that the active conductor (110)(120) and the optical cable (130) move in equal amounts, thereby obtaining a magnetic induction signal and an optical signal.

[0089] Meanwhile, the above-mentioned OTDR can utilize, for example, the backscattering of light incident on an optical fiber from a pulsed light source. Light traveling through the optical fiber undergoes Rayleigh scattering due to minute variations in the refractive index of the optical fiber core. Additionally, reflection of light occurs at points of discontinuity, connections, and breaks in the optical fiber.

[0090] The composite cable (10) of the sensor unit (100) can be installed to detect a security signal, i.e., an intrusion signal, in a predetermined area, preferably every 3 meters, on a fence requiring security, as shown in FIG. 10, which will be described in detail later.

[0091] Therefore, if the fence is struck while an intruder attempts to cut the fence or climb over it, a magnetic induction signal by the active line conductor (110) and permanent magnet (140) and an optical signal by the optical cable (130) are generated, which can determine whether an intrusion has occurred and which section of the fence the intruder is attempting to enter through.

[0092] For this operation, a program for detecting intrusion at each predetermined section of the composite cable (10) may be stored in the control unit (150), and the transmission distance of the detection signal obtained from the sensor unit (100) installed at each predetermined section may be pre-set, and even if not set, the intruder's intrusion area (section) can be determined based on the reflected distance.

[0093] Controlling the generation of signals by pre-setting multiple signal distances is made possible by storing and managing zone (section) information corresponding to which area each of the multiple signal transmission distances corresponds to within the entire length of the fence, and such information can be subdivided and stored over the entire length of the fence where intrusion may occur.

[0095] [2nd Example]

[0096] FIG. 5 is a configuration diagram of a sensor unit according to a second embodiment of the present invention.

[0097] The intrusion detection device (1) according to the second embodiment may be composed of a sensor unit (100) which is provided within a composite cable (10) and consists of an active conductor (110) (120) through which current flows, a central conductor (130) located between the active conductors (110) (120), and a permanent magnet (140) provided inside the composite cable (10); a control unit (150) which processes a signal detected by the sensor unit (100); a display unit (160) which displays the result processed by the control unit (150) externally as a character, character, etc.; and an alarm unit (170) which displays the result processed by the control unit (150) externally as an alarm sound, etc. At this time, the active conductors (110) (120), the central conductor (130), and the permanent magnet (140) may all be arranged in close contact.

[0098] In FIG. 2, the magnetic induction sensor (151) is a sensor comprising an active conductor (110)(120), a central conductor (130), and a magnet (140).

[0099] As shown in FIG. 5, the structure is such that the electromotive force generated by the active conductor (110)(120) passing through the magnetic field generated by the magnet (140) and the microwave supplied through the power supply to the central conductor (130) within the cable (10) can be indicated as a distance at the location where the electromotive force is generated by vibration or shock.

[0100] For example, it is not easy to express the point where vibration or shock occurs in the fence as a distance. Therefore, in the second embodiment, a central conductor (130) wrapped in an insulator (180) is configured so that microwaves can flow and power line communication can also be performed, so that the control unit (150) can accurately determine the intrusion location.

[0101] In this case, even if the length of the cable (10) in a given section is increased, the intrusion location can be finely distinguished within that section. That is, the distance between fence posts is set to within 3m, and when current flows through the central conductor (130) and a magnetic field is formed in a circular shape around it and the active conductor (110) moves, the SIN value is 90° or less, so the generated electromotive force signal is weak.

[0102] However, as the magnet (140) is configured, the magnetic field between the magnets is formed in a straight line from the N pole to the S pole, and the magnetic field strength generated by the active conductor (110) moving at a right angle can obtain a greater electromotive force than when vibration or impact is applied to the fence with the same force, thus making it easier to analyze the frequency of intrusion. Therefore, the S / N ratio is improved.

[0103] In addition, by configuring the active conductor (110)(120) inside a tube (notation) when the coating is peeled off, rainwater seeps in and causes the active conductor (110)(120) to stick to or corrode the insulator (180) surrounding the central conductor (130), thereby reducing movement and causing the loss of detection capability for magnetic induction signals and microwave signals.

[0105] [3rd Example]

[0106] FIGS. 6 and 7 are configuration diagrams of a sensor unit according to a third embodiment of the present invention. FIGS. 8 and 9 are configuration diagrams of a sensor unit according to another embodiment of FIGS. 6 and 7.

[0107] The intrusion detection device (1) according to the third embodiment may be composed of a sensor unit (100) which is provided within a composite cable (10) and is inserted into an insulating tube (190), and a metal plate (200) provided inside the cable (10); a control unit (150) which processes a signal detected by the sensor unit (100); a display unit (160) which displays the result processed by the control unit (150) to the outside as a character, character, etc.; and an alarm unit (170) which displays the result processed by the control unit (150) to the outside as an alarm sound, etc.

[0108] In FIG. 2, the charge sensor (152) is a sensor comprising a composite cable (10) and a metal plate (200).

[0109] Changes in electric charge are affected by temperature and humidity, and are particularly significantly impacted by the shaking of the fence due to wind; therefore, calculating the distance (point) of abnormal occurrence based on the point of charge change results in a large margin of error and reduced reliability.

[0110] At points where changes in electric charge occur due to environmental influences and where the detection wire is bound to the fence with a binder, frequent changes in electric charge occur due to triboelectricity; furthermore, since electric charge changes at multiple points simultaneously due to heavy rain or hail, it becomes impossible to accurately determine the presence and location of intrusion.

[0111] Accordingly, in the third embodiment, as shown in FIGS. 6 and 7, it may be composed of an optical cable (130) inserted with a certain space as a buffer space within a tube (190), and a stranded wire or a coated fine metal plate (200) coated to become the positive pole.

[0112] In Fig. 6, since the fine metal plate (200) is the positive pole, the cable (10) is grounded with a metal shield to become the negative pole.

[0113] On the other hand, in FIG. 7, the metal plate (200) is configured to have both positive and negative poles.

[0114] The third embodiment inserts an optical cable (130) into a tube (190) and uses an OTDR to determine the location and distance of the impact based on the impact signal generated from the fence, thereby distinguishing whether the signal is a signal of change in charge amount, a simultaneous signal, an individual signal, or a signal of impact that occurs simultaneously in real time across the entire cable section due to hail or heavy rain, so that the signal caused by intrusion and the natural signal can be processed separately.

[0115] The charge change method provides excellent performance when crossing the fence, but the problem of not being able to detect the cut when the net (wires constituting the fence) is cut instantaneously can be compensated for by using an optical cable (110) to fuse and process the composite signal, thereby reducing errors caused by natural phenomena and allowing the intrusion point to be indicated within an error range of 3 meters.

[0116] In other words, the disadvantage of being vulnerable to panel cutting detection (difficulty in measuring instantaneous charge changes due to cutting) is compensated for by optical cable signal processing.

[0117] Using a tube (190) with a certain amount of space secured as spare space is because the optical cable (130) has a short lifespan, making it easier to maintain by separating it from the cable (10), and consequently, it can reduce costs compared to replacing the entire cable (10).

[0118] As shown in FIGS. 8 and 9 as another embodiment, even if the tube (190) is configured with a current-carrying central conductor (110) wrapped in an insulator (190) to enable microwave and power line communication instead of an optical cable, the control unit (150) can finely distinguish the detection section and indicate the intrusion location as a distance.

[0119] In Fig. 8, since the fine metal plate (200) is the positive pole, the cable (10) is grounded with a metal shield to become the negative pole.

[0120] In FIG. 9, the metal plate (200) is configured to have both positive and negative poles.

[0121] Therefore, it is possible to distinguish and process alarms regarding whether signals occurring simultaneously in real time due to hail, heavy rain, etc., are signals caused by intrusion, thereby drastically reducing false alarms.

[0123] Meanwhile, when the composite cable is detached from the fence, for example, when it is detached from a fence wire and falls to the ground, it is not possible to accurately detect when an intruder cuts the wire or grabs the wire and climbs over the fence. Therefore, if a signal is transmitted from the bottom of the fence or the outer surface of the composite cable to the ground to determine the exact current location of the composite cable, a program can be stored in the control unit to detect the received signal and determine whether the composite cable maintains its normal position.

[0124] In addition, as another embodiment, a program that determines whether the wire maintains an accurate position based on signals reflected from the ground by attaching sensors to a predetermined wire arranged in multiple rows across the upper and lower parts of the fence may also be stored in the control unit. This configuration can replace the method of determining whether an intrusion has occurred and the location of the intrusion based on the composite signal of the composite cable. By installing multiple sensors at predetermined intervals between the posts of the fence and setting the installation locations in the control unit, it will be possible to determine whether an intrusion has occurred and the location of the intrusion.

[0125] In addition, distance sensors can be configured to check whether brackets are maintaining their correct positions between brackets, for example, at intervals of 3 meters. That is, if a specific bracket transmits a signal to a bracket located 3 meters away, it can be checked whether the adjacent bracket is maintaining its correct position based on the reflected signal received. With this configuration, if the bracket and the sensor installed thereon are set in the control unit, it will be possible to determine whether the bracket is maintaining its correct position.

[0127] Next, an example of the operation of an intrusion detection system through a fence using an embodiment of the present invention is described as follows.

[0128] FIG. 10 is an exemplary diagram showing the sensor unit of the present invention installed on a fence. FIG. 11 is a diagram showing the waveform change according to the state change of the fence when the composite cable of the present invention is installed on the fence.

[0129] In the present invention, the composite cable can be fixed to the wire because it detects the shaking of the wire when the fence wire is cut or when someone climbs over the wall by grabbing the wire, thereby determining whether an intrusion has occurred and the location.

[0130] When a constant force of impact or vibration is applied to a wire located between fence posts, the greatest electromotive force is generated at the center of the wire length. Since the domestic standard for fence installation requires that the spacing between fence posts be within 3m, this is utilized to subdivide the fence at 3m intervals and control the transmission and reception of signals between the composite cable and the detection device.

[0131] The control center can remotely adjust the sensitivity of the entire section of the fence where the composite cable is installed, and can also adjust the sensitivity of specific subdivided sections to be less sensitive or more sensitive.

[0132] In this state, when an intruder climbs over a fence, a frequency waveform as shown in FIG. 11a is generated, and if the control unit is set to determine which section the wire touched by the intruder is located in, the location and distance of the intrusion can be determined. Since the location of the detection signal generated from the composite cable passing through the section where the wire touched by the intruder is located is also set in the system, the location and distance of the intrusion can be determined.

[0133] Figure 11a shows the waveform generated when an intruder grabs a Y-shaped bracket installed on a fence, applies force to the left foot, and applies less force to the right foot. When vibration or impact is applied to the fence, a maximum frequency waveform is generated at the midpoint, but on the left and right sides, the vibration or impact is absorbed by the posts on both sides of the fence, so the frequency waveform does not differ significantly from the normal waveform.

[0134] Therefore, when cutting the wire or climbing over the wall, the location and distance of the intrusion can be determined by knowing which section the frequency waveform occurred at a high level. The frequency waveform generated at this time is as shown in Fig. 11b. Fig. 11b shows the frequency waveform generated when crossing over the view between fence posts or making an impact.

[0135] And shock signals caused by heavy rain or hail, etc., generate frequency waveforms as shown in Fig. 11c, and since heavy rain or hail does not fall only at a specific point, similar signals can be generated throughout the entire length of the composite cable.

[0136] The frequency waveform when no physical force is applied to the fence under normal circumstances is as shown in FIG. 11d.

[0137] Therefore, the system stores the average initial value when an intruder climbs over a fence post and cuts a wire, and determines which landscape among landscapes subdivided at 3m intervals it is, and if the signal coming from both wires with a certain time difference or simultaneously from the fence post is greater than the initial set value, it can simultaneously detect the location of the intrusion and issue an alarm and display.

[0139] 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.

[0140] 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.

[0141] An embodiment for implementing an intrusion detection system using a location indication function by a composite cable in which a magnetic induction signal or an electric charge signal and an optical signal are generated in combination has been described. The embodiment described above illustrates some of the many specific embodiments representing the principles described in the present invention. Accordingly, by utilizing the embodiment of the present invention, those skilled in the art will be able to easily implement many different arrangements within the scope defined by the claims of the present invention. Explanation of the symbols

[0143] 1 : Intrusion detection device 2 : Control center 3 : Convergence Center 4 : Terminal 100 : Sensor unit 150 : Control unit 150 : Control unit 160 : Display unit 170 : Alarm unit

Claims

Claim 1 An intrusion detection device configured adjacent to a fence to detect intrusion; a control center that processes intrusion detection signals transmitted from the intrusion detection device; and a convergence center that analyzes intrusions in conjunction with the intrusion detection device and the control center. An intrusion detection system comprising: a terminal that processes an intrusion detection signal transmitted from the intrusion detection device; wherein the intrusion detection device is configured to determine whether an intrusion has occurred and the location of the intrusion by selectively processing these signals in conjunction with an optical signal when a magnetic induction signal is generated by associating an optical cable with a magnet, or a microwave signal is generated by associating a magnet and a central conductor, or an electric signal is generated by associating an optical cable with a metal plate, and wherein the device comprises: an active conductor through which current supplied through a power supply unit flows; an optical cable inserted into a tube which is positioned between the active conductors and generates an optical signal; a central conductor which is positioned between the active conductors and generates a microwave signal; and a magnet provided on the inner or outer side of a composite cable which generates a magnetic induction signal together with the active conductors; a sensor unit comprising: a control unit that processes the signal detected by the sensor unit to determine the location of the intrusion; a display unit that displays the result processed by the control unit externally as a character or text; and an alarm unit that displays the result processed by the control unit externally as an alarm sound.It is composed of, wherein the control unit stores a program that detects intrusion at each predetermined section of the composite cable based on the detection signal of the sensor unit, and determines which section the detection signal originated from by pre-setting the transmission distance of the detection signal obtained from the sensor unit installed at each predetermined section, and compares the fence impact signal and the charge change signal detected through an optical time-domain reflectometer (OTDR) to determine whether the fence impact signal and the charge change signal occurred at the same location and distance or whether the impact signal occurred simultaneously across the entire section of the composite cable, thereby distinguishing between a signal caused by intrusion and a natural signal; wherein if the impact signal and the charge change signal occurred simultaneously, it is determined to be a signal caused by intrusion at the same location and distance, and if the impact signal occurs simultaneously across the entire section of the composite cable in real time, it is determined to be a natural signal, and to prevent the inability to accurately detect cases where an intruder cuts the wire or grabs the wire and climbs over the fence due to the composite cable being detached from the fence, the current location of the composite cable is transmitted and received to the ground attached to the composite cable. An intrusion detection system using position analysis by a composite cable in which magnetic induction and optical signals are generated in combination, characterized by making a judgment based on sensor detection signals and determining whether a wire composed of multiple rows extending across the upper and lower parts of a fence maintains an accurate position based on sensor detection signals attached to the wire and transmitting and receiving signals to and from the ground. Claim 2 delete Claim 3 delete

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