KR102428514B1 - Metal sensing device and system for preventing crime and diasasters using thereof - Google Patents

Abstract

The present invention, a case having a hollow interior and formed in a constant size; a cable configured inside the case, through which a constant current flows; a permanent magnet configured inside the case and generating a magnetic field that is changed by reaction with the cable current as it moves inside the case while reacting with the iron component; and a detection sensor for detecting a changing magnetic field, and a metal detection device buried at a certain depth in the ground; and an analysis device for analyzing and determining whether or not the fence is abnormal and the location of the abnormality based on the detection value transmitted from the detection sensor of the metal detection device. a remote receiving device (server) that receives whether or not the fence is abnormal as determined by the analysis device; And a metal detection device comprising a power supply for applying operating power to the system and a crime prevention and disaster prevention system using the same.

Description

Metal detection device and crime prevention system using the same

The present invention relates to a metal detection device and a crime prevention system using the same.

In particular, the present invention is to bury a metal detection device in the ground adjacent to a fence made of a steel structure, and detect the shaking of the fence to determine whether an intruder has invaded.

The present invention is also made so that it can be determined whether or not to maintain the correct position of the fence and the metal detection device buried in the ground.

As society diversifies and the economy develops, some people enjoy that much economic wealth, but the reality is that economic crimes due to the gap between the rich and the poor are also increasing.

Even if it is not an economic crime, a more precise check is required for the protection of major national facilities and the maintenance of all facilities as a complex and diversified society is formed.

A crime prevention and disaster prevention system appeared in response to such a desire, and in recent years, many companies that provide specialized services by entrusting such tasks have appeared.

Among the circuit components applied to such existing crime prevention and disaster prevention systems, an important part is a sensor unit and an alarm alarm unit that can detect and promptly notify the outside when an emergency occurs.

However, the cable sensor used in the existing crime prevention and disaster prevention system is configured to output only one signal in the same way as the alarm signal due to vibration and shock without separate signals when the circuit is disconnected or short-circuited. There were many difficulties in the reliability and maintenance management of the system because it could not be clearly identified.

In addition, there were cases where the sensor signal was not strong, so it was difficult to use it as a crime prevention signal.

Utility Model Registration No. 20-0389350 is a detector body in which a horizontal panel is connected to the top of two vertical panels erected up and down to form a passage for entry and exit, and the two vertical panels are placed with the passage between them. and two or more metal detection units installed so as to be able to detect the upper and lower positions of metals through each independent detection zone divided into at least two places in the vertical direction corresponding to the total area of the passage, and the metal detection units are connected It includes a signal generator that is installed so as to be able to identify the detection area when detecting metal, and is installed at the entrance or exit of an airport or a place requiring security to easily check the presence or absence of various metals such as firearms or knives among the entrants. It can be determined, and in particular, it is possible to easily determine the location of metals carried in the body of the entrant.

The present invention has been made to improve this point, and an object of the present invention is to bury a metal detection device in the ground adjacent to a fence made of a steel structure, and detect the movement of the fence so that an intruder can be diagnosed. One, it is to provide a metal detection device and a crime prevention system using the same.

Another object of the present invention is to provide a metal detection device and a crime prevention and disaster prevention system using the same, so that it can be determined whether or not to maintain the correct position of the metal detection device buried underground.

Other objects of the present invention may be inferred from the description below.

The metal detection device of the present invention for achieving the above object,

The inner case is hollow and formed in a certain size;

a cable configured in the case and through which a constant current flows;

a permanent magnet configured inside the case and generating a magnetic field that is changed by reaction with the cable current as it moves inside the case while reacting with the iron component; and

Consists of a detection sensor that detects the changing magnetic field,

It is characterized in that it is buried at a certain depth underground.

A crime prevention and disaster prevention system using the metal detection device of the present invention for achieving the above object,

The inner case is hollow and formed in a certain size;

a cable configured in the case and through which a constant current flows;

a permanent magnet configured inside the case and generating a magnetic field that is changed by reaction with the cable current as it moves inside the case while reacting with the iron component; and

Consists of a detection sensor that detects the changing magnetic field,

A metal detection device buried at a certain depth underground; and

an analysis device for analyzing and judging whether or not an abnormality of the fence is present and an abnormality occurrence location based on the detection value transmitted from the detection sensor of the metal detection device;

a remote receiving device (server) that receives whether or not the fence is abnormal as determined by the analysis device; and

It is characterized in that it consists of a power supply that applies operating power to the system.

As described above, according to the metal detection device of the present invention and the crime prevention system using the same, it is possible to accurately prevent crime by detecting the shaking of a steel structure on the ground and increasing its usefulness as a crime prevention signal.

In addition, by judging whether or not to maintain the correct position of the metal detection device buried underground, intruder detection and determination can be made accurately.

In addition, since the metal detection device is buried underground, the safety of operation can be guaranteed except for natural disasters.

1 is a block diagram of a metal detection device according to a first embodiment of the present invention.
2 is a diagram illustrating the principle of generating a magnetic field of the metal detection device according to the first embodiment of the present invention.
3 is a block diagram of a crime prevention and disaster prevention system using a metal detection device according to a first embodiment of the present invention.
Figure 4 is an exemplary view showing a state in which the metal detection device according to the first embodiment of the present invention is embedded.
5 is a configuration diagram according to a second embodiment of the present invention.

Since the present invention can have various changes and can have various embodiments, specific embodiments are illustrated in the drawings and described in detail in the detailed description.

However, this is not intended to limit the present invention to a specific embodiment, it should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention.

The terms used in the present invention are only used to describe specific embodiments, and are not intended to limit the present invention.

The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present application, terms such as “comprise” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, but one or more other features It is to be understood that this does not preclude the possibility of the presence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

[Preferred aspect of the invention]

The present invention discloses a metal detection device and a crime prevention system using the same.

According to the present invention, a plurality of metal detection devices may be buried adjacent to the fence at a predetermined depth in the ground at a predetermined interval, and these metal detection devices are embedded at a predetermined interval with respect to one fence, respectively, to the external crime prevention and disaster prevention server. It is configured to transmit one detection signal.

The external crime prevention server is configured to determine whether an intruder has occurred by diagnosing the shaking (movement) of the fence based on the detection signal transmitted from at least one metal detection device for one fence.

Since the metal detection device of the present invention is buried in the ground below the fence at regular intervals, it is configured to determine the position of the fence and whether an intruder has occurred based on the detection signal transmitted from each metal detection device.

In the metal detection device of the present invention, a permanent magnet is housed in a hollow case of a certain size, and by locating a cable through which current flows around the permanent magnet, the iron component approaches the permanent magnet according to the shaking of the fence. It is configured to determine whether an intruder has occurred based on the changing magnetic field.

According to the present invention, the permanent magnet moves as the iron component approaches the permanent magnet due to the shaking of the fence due to the occurrence of an intruder, and accordingly, when the current flowing in the cable and the permanent magnet react to change the magnetic field, the detection sensor detects it It can be configured to perform an operation to analyze whether an intruder has occurred by sending it to an external analysis device.

In addition, the present invention provides an intruder based on the amount of magnetic field change generated when the case, cable, and permanent magnet all move as the shock to the ground due to movement or collapse of the fence caused by the intruder is applied to the metal detection device. It can be configured so that the operation of determining whether or not there is.

As another embodiment, the present invention configures a distance sensing sensor such as an ultrasonic sensor at the lower end of the fence, and configures the protrusion to protrude a predetermined height out of the ground at the upper side of the metal detection device buried in the ground, and the fence and the metal by the ultrasonic sensor The distance between the detection devices is sensed so that it can be determined whether the metal detection device maintains a normal position.

[Preferred embodiment of the invention]

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

[First embodiment]

1 is a configuration diagram of a metal detector according to a first embodiment of the present invention. 2 is a diagram illustrating the principle of generating a magnetic field of the metal detection device according to the first embodiment of the present invention. 3 is a block diagram of a crime prevention and disaster prevention system using a metal detection device according to a first embodiment of the present invention. 4 is an exemplary view showing a state in which the metal detection device according to the first embodiment of the present invention is embedded.

As shown in Figure 1, the metal detection device 100 of the present invention, for example, a case 110 of a shape such as a cylindrical or rectangular or rectangular parallelepiped forms the shell. However, it is not necessarily limited to these shapes.

As shown in FIG. 4, the metal detection device 100 is buried at a certain depth in the ground, for example, 40 cm deep, and has, for example, a width of 15 cm and a length of 4 cm, and is adjacent to the fence such as the lower part of the fence. Therefore, if the fence shakes or collapses due to an intruder, the movement of the steel structure, that is, the iron component, is detected to determine whether an intruder has occurred.

The case 110 may be made of a material that is not magnetized or that is weakly magnetized so as not to affect the magnet, for example, may be made of a material such as aluminum, plastic, or tin. However, it is not necessarily limited to these materials.

The case 110 of the metal detection device 100 is configured such that the cable 120 is inserted therein, and the cable 120 interacts with the permanent magnet 130 configured in the case 110 to generate a magnetic field. It is disposed adjacent to the permanent magnet 130 to do so.

The cable 120 is a concept including a DC power line of 12V supplied by itself or from the outside, a ground line, and an output line.

The permanent magnet 130 is located inside the case 110, but is disposed in the longitudinal direction inside the hollow case 110 so as to react with the iron component when the fence is not normal, such as shaking or collapsing by an intruder. . That is, the hollow configuration inside the case 110 is provided as a space in which the permanent magnet 130 can move so that the magnetic field can be changed. Although the permanent magnet 130 is shown as being seen from the outside in FIG. 1, this is only for reference.

When a steel structure such as a fence enters within a certain range, for example, 5 m from the metal detection device 100, the permanent magnet 130 moves in response to the iron component, and accordingly, the current flowing through the cable 120 and the permanent magnet ( 130) reacts and the change in the magnetic field is used to diagnose whether an intruder has occurred.

The permanent magnet 130 may be, for example, an Arnico magnet, a ferrite magnet, or a rare earth magnet. Preferably, the magnet 130 is a neodymium magnet.

As shown in FIG. 2 , when the fence shakes, the iron component approaches the metal detection device 100 , and the permanent magnet 130 reacts and moves to affect the conducting wire of the cable 120 , resulting in electromotive force and noise induced. and, based on this, a permanent magnet 130 is configured around the cable 120 having a built-in conducting wire to determine whether the fence is abnormal.

The cable 120 has a shield wire stacked on the inside of the outer shell, and a current flowing wire is embedded in an inner space of the shield wire, and a permanent magnet 130 may be disposed around the cable 120 .

As shown in Figure 3, the crime prevention system using the metal detection device of the present invention is a metal detection device embedded in a plurality of underground for each predetermined section to detect abnormalities in the fence by configuring a permanent magnet 130 therein. 100); a detection sensor 140 installed in a portion outside the case 110 to detect a change in a magnetic field generated as the iron component approaches the metal detection device 100 by shaking or collapsing of the fence; an analysis device 25 for analyzing and determining whether or not the fence is abnormal and the position of the abnormality based on the detection value transmitted from the detection sensor 140; a remote receiving device (server) 26 that receives whether or not the fence is abnormal as determined by the analysis device 25; and a power supply unit 27 for applying operating power to the system.

The analysis device 25 of the present invention receives the electromotive force and noise induced by the movement of the permanent magnet 130 configured inside the metal detection device 100 buried at regular intervals in the ground from the detection sensor 140, By analyzing this, it is determined whether the shaking of the fence caused by a natural phenomenon or an impure intention of a third party, that is, shaking due to intrusion, is determined, and the location of the fence where the abnormality occurred is determined and transmitted to the remote receiving device 26. .

The analysis device 25, for example, by measuring the electromotive force and noise induced according to the movement of the permanent magnet 130 in advance of the shaking of the fence caused by natural phenomena such as wind, and making a database (DB), the detection sensor By comparing with the detection value from 140, it is possible to determine whether the fence is abnormal, and at the same time, by storing in advance at which point each detection sensor 140 is installed, the detection value of the detection sensor 140 is determined. When an abnormality occurs as a result of the judgment based on the result, it is possible to determine at which point the problem is related to the fence.

The electromotive force sensed by the metal detection device 100 due to the movement of the cable 120 uses a formula such as F=qvBsinθ or F=iBsinθ according to the Lorentz law.

where q = amount of charge (c), v = velocity of moving charge (m/s), B = magnetic field, θ = angle between current and magnetic field (sinθ = 1 when θ = 90), i = current (A) )to be.

That is, if the fence is shaken by the intruder's impure intention, as shown in FIG. 3, the permanent magnet 130 in the metal detector 100 through which the cable 120 through which the current (i) passes responds to the position of the fence's steel structure. will change Accordingly, the flow of the magnetic field B is changed according to the change (movement) of the position (movement) of the permanent magnet 130 , and the angle θ between the magnetic field B and the current i is changed.

Therefore, as the frequency is formed in the sinusoidal waveform, the changed magnetic field B is induced in the conducting wire of the cable 120 through which the current flows, and the waveform is momentarily distorted to generate an electromotive force.

In addition, the present invention detects the output waveform generated by the shaking of the fence by the metal detection device 100 and transmits it to the analysis device 25. t)dt) is converted into decibels (dB) using the value obtained by integrating the interval (t1 to t2) (for example, 100ms) of a certain period (T). use dt. By storing the noise obtained in this way in the database, it is possible to determine whether the noise is caused by a natural phenomenon.

As with the database of the electromotive force, the noise of the output waveform measures the maximum data that can be generated by the natural environment and converts it into a database.

That is, the detection sensor 140 detects electromotive force and output waveforms generated due to natural phenomena, stores and manages these signals in the analysis device 25 that analyzes and processes these signals, and determines whether the fence is abnormal based on this.

The first embodiment of the present invention configured as described above can be divided into the following two operations.

1. Motion caused by the shaking of the fence

As the iron component approaches the permanent magnet 130 due to the shaking of the fence due to the occurrence of an intruder, the permanent magnet 130 responds to this and moves, and accordingly, the current flowing through the cable 120 and the permanent magnet 130 react with the magnetic field this will change

Therefore, the detection sensor 140 detects this and transmits it to the external analysis device 25 to analyze whether an intruder has occurred.

2. Movement due to the collapse of the fence, etc.

When an impact is applied to the ground due to strong shaking or collapse of the fence caused by intruders, the case 110, the cable 120, and the permanent magnet 130 constituting the metal detection device 100 can all move.

That is, due to the shaking or collapse of the fence, the ground responds to this and the metal detection device 100 also shakes, and at the same time, the permanent magnet 130 and the like also shake. The magnetic field will change.

Therefore, the detection sensor 140 detects this and transmits it to the external analysis device 25 to analyze whether an intruder has occurred.

Of course, even in this operation, the magnetic field may be changed as the iron component of the steel structure reacts with the permanent magnet 130 according to the shaking or collapse of the fence.

[Second embodiment]

5 is an exemplary view showing a state in which the metal detection device according to the second embodiment of the present invention is embedded. The configurations of Figs. 1 to 4 are used in the same way.

The second embodiment is, for example, a technology in case the fence and/or the metal detector do not maintain the correct position due to a natural disaster such as a natural disaster.

If a strong natural disaster occurs, for example, the ground may be dug and the metal detection device 100 may be exposed to the ground, and the metal detection device 100 may be lost due to strong rain, or a certain amount from the fence intended in the present invention. It may be out of range. Therefore, the second embodiment is implemented assuming such a case.

In the second embodiment, a sensor for detecting a distance or intensity such as an ultrasonic sensor is configured in the lower part of the fence, and a protrusion is configured to protrude a predetermined height out of the ground at the upper side of the metal detection device buried in the ground, and the fence and the metal by the ultrasonic sensor It is configured to determine whether the metal detection device maintains a normal position by sensing the distance between the detectors.

The protrusion is preferably made of a material that does not affect the magnet 130 configured inside the case 110 .

Referring to FIG. 5 , the sensor 150 is configured in a certain portion adjacent to the ground at the bottom of the fence, and a protrusion 160 protruding to the outside in a certain portion toward the upper portion of the metal detection device 100 is configured. The protrusion 160 is fixed to the upper outer peripheral surface of the metal detection device 100 through an appropriate fixing means.

In addition, the analysis device 25 is configured to store and manage reference distance data between the sensor 150 and the protrusion 160 .

In the second embodiment of the present invention configured as described above, the sensor 150 transmits an ultrasonic signal to the protrusion 160 in real time, and transmits the received ultrasonic wave reflected by the protrusion 160 to the analysis device 25 . do.

Accordingly, the analysis device 25 compares the stored and managed reference data with the signal input from the sensor 150, and depending on the comparison result, whether the metal detection device 100 maintains the correct position or whether the fence maintains the correct position. After analyzing whether it is maintained or not, it is transmitted to the remote receiving device 26, which is a crime prevention server.

Based on the analyzed data, if it is determined that an abnormality has occurred in the fence and/or the metal detection device, an alarm is sent through the alarm unit, etc. will be.

An embodiment of a metal detection device and a crime prevention and disaster prevention system using the same has been described. The embodiments described above are illustrative of some of the many specific embodiments that represent the principles described herein. Accordingly, by using the embodiments of the present invention, those skilled in the art will be able to devise many different arrangements within the scope defined by the claims of the present invention.

25: analysis device 26: remote receiving device (server)
100: metal detection device 110: case
120: cable 130: permanent magnet
140: detection sensor 150: ultrasonic sensor
160: protrusion

Claims (2)

a case having a hollow interior and formed in a certain size;
a cable configured inside the case and through which a constant current flows;
a permanent magnet configured inside the case and generating a magnetic field that is changed by reaction with the cable current as it moves inside the case while reacting with the iron component; and
A detection sensor for detecting the changing magnetic field; And
In the state that the sensor for distance sensing is embedded in the lower part of the fence at a certain depth in the lower part, the protrusion is formed to protrude outward in a certain part from the underground to the upper part; Consisting of,
A metal detection device, characterized in that the distance between the lower portion of the fence and the protrusion is sensed by the distance sensing sensor. a case having a hollow interior and formed in a certain size; a cable configured inside the case and through which a constant current flows; a permanent magnet configured inside the case and generating a magnetic field that is changed by reaction with the cable current as it moves inside the case while reacting with the iron component; a detection sensor for detecting the changed magnetic field; and a protrusion formed to protrude from the underground to the upper part in a state buried at a certain depth in the lower part of the fence having a sensor for detecting a distance at the lower part; a metal detection device for detecting a distance;
an analysis device for analyzing and judging whether or not the fence is abnormal and an abnormality occurrence location based on the detected value transmitted from the metal detection device, and determining whether the metal detection device or the fence maintains its original position;
a remote receiving device (server) that receives the abnormality of the fence determined by the analysis device and whether the metal detection device or the fence maintains the correct position; and
A crime prevention system using a metal detection device, characterized in that it consists of a power supply that applies operating power to the system.

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