WO2011046284A1

WO2011046284A1 - Cable unit for a security device

Info

Publication number: WO2011046284A1
Application number: PCT/KR2010/004378
Authority: WO
Inventors: 김도형
Original assignee: Kim Do-Hyung
Priority date: 2009-10-16
Filing date: 2010-07-06
Publication date: 2011-04-21
Also published as: KR100933947B1

Abstract

The present invention relates to a cable unit for a security device, which is provided on a fence and senses the vibrations which occur when the fence is crossed or cut. In the cable unit for a security device according to the present invention, rubber magnets (17) and cores (15) wrapped in silicone tubing (13) are alternately disposed around the circumference of an earthing wire (11), an aluminium tape (19) is taped onto the rubber magnets (17) and the cores (15) wrapped in the silicone tubing (13), the aluminium tape (19) is covered by a braid shield (21), the braid shield (21) is covered by a sheath (23), and a space (S) is formed between the cores (15) and silicone tubing (13) such that each core (15) can vibrate inside the silicone tubing (13).

Description

Cable Unit for Security Device

The present invention relates to a cable unit for a security device installed on the fence, to detect the vibration generated when the intruder crosses or cut the fence, and more particularly generated by the vibration of the conductor core in the magnetic field formed by the magnet It relates to a cable unit for a security device for detecting the vibration of the fence to the size of the induced electromotive force.

Republic of Korea Patent No. 10-628500 (registered September 19, 2006) is introduced "fence vibration detector".

The fence vibration detector is a sensing device for sensing the vibration of the fence in the control unit using a cable sensor, the cable sensor is made so that the gap between the coaxial core and the outer surface of the shield wire is formed so that the gap is formed. .

However, in the fence vibration detector, when moisture flows into the core, the air in the clearance space is mixed with moisture, so that the clearance space containing the wire is in a conductive state, so that the clearance space is lost. Since the change in capacity is extinguished, and the sensing power is sharply reduced, malfunctions occur frequently during the rainy season or during the rainy season.

Accordingly, an object of the present invention is to detect the vibration of the fence to the magnitude of the induced electromotive force generated by the vibration of the conductor core in the magnetic field formed by the magnet, thereby preventing malfunction and malfunction due to moisture without being affected by moisture. It is to provide a cable unit for the security device.

Cable unit for the security device according to the present invention for achieving the above object is arranged in the center of the ground wire and the rubber magnet is wrapped by the silicon tube alternately, the aluminum and the core and the rubber magnet wrapped by the silicon tube The tape is tapered, the aluminum tape is covered by a shield, the braid is covered by a sheath, and the play between the core and the silicone tube so that the core can be vibrated in the silicone tube. It is characterized in that it is formed.

Three cores wrapped by the silicon tube are disposed at intervals of 120 ° around the ground wire, and three rubber magnets are also disposed at intervals of 120 ° around the ground wire.

Another example of a cable unit for a security device according to the invention is three holes are formed in the rubber magnet having a circular cross-section, the ground wire is disposed in the first hole formed in the center of the rubber magnet, is formed on the side of the first hole Cores wrapped by a silicone tube are disposed in the second and third holes, respectively, the rubber magnet is covered by a polyester film, the polyester film is covered by a sheath, and the core is vibrated in the silicone tube. In order to be able to, it is characterized in that the play between the core and the silicon tube is formed.

In addition, the cable unit for a security device according to the present invention is mounted to the fence by a cable tie, the receiver is connected to one end of the core to receive the detection signal, and the signal connected to the other end of the center of the core is induced frequency Characterized in that it further comprises a terminator for preventing the reflection from the other end is input to the receiver.

The receiver processes an AM noise filter for removing noise from a signal input from a cable unit, a differential amplifier for removing noise in phase from a signal from which the noise is removed by the AM noise filter, and a signal amplified by the differential amplifier. A band pass filter for passing only the signal frequency band to be cut off and other signals, a gain adjusting amplifier for amplifying the signal passing through the band pass filter, a state monitor for monitoring the disconnection and short circuit of the cable and the connection state with the terminator; An open / close detector for detecting the disassembly of the receiver by an external intruder, a central processing unit for receiving a signal from the gain adjusting amplifier and the state monitor, and analyzing the image information input from the CCTV to determine whether an external invasion has occurred; It consists of an alarm device that sounds an alarm upon receiving a signal from the central processing unit. Gong.

The terminator is to prevent the carrier from being input to the receiver, the charger for charging the induced electromotive force provided to the other end of the cable, the discharger for discharging the current charged in the charger, and the terminal is dismantled by an external intruder It is characterized by consisting of the opening and closing detector for detecting that.

As a result, the cable unit for the security device according to the present invention changes the strength of the voltage by the vibration speed of the conductor core, and by using this as a detection signal, it is possible to check whether an intruder is invaded and not affected by moisture. Therefore, there is an effect to prevent malfunction and malfunction due to moisture.

1 is a side view showing a cable unit for a security device according to a first embodiment of the present invention

2 is a cross-sectional view taken along line A-A of FIG. 1 showing a cable unit for a security device according to a first embodiment of the present invention;

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

1 and 2, a cable unit for a security device according to a first embodiment of the present invention includes a core 15 and a rubber magnet 17 surrounded by a silicon tube 13 around a ground wire 11. The aluminum tape 19 is taped to the core 15 and the rubber magnet 17, which are alternately arranged and wrapped by the silicon tube 13, and the aluminum tape 19 is attached to the braid 21 (shield). The inner core 15 and the silicon tube 13 so that the braid 21 is covered by the sheath 23 and the core 15 can be vibrated in the silicone tube 13. The clearance S is formed in between.

Three cores 15 enclosed by the silicon tube 13 are disposed at intervals of 120 ° around the ground wire 11, and three rubber magnets 17 are also disposed at intervals of 120 ° around the ground wire 11. .

The rubber magnet 17 is a product formed by mixing ferrite powder and NBR resin.

The cable unit 1 for a security device according to the first embodiment of the present invention configured as described above is mounted to the fence 230 by a cable tie 235, as shown in FIG. When the vibration occurs, the core 15 generates vibrations in the silicon tube 13 in a state in which a magnetic field is formed by the rubber magnet 17, and thus induced electromotive force is generated in the core 15. In this case, the induced electromotive force is changed in the strength of the voltage by the vibration speed of the core, which is a conductor, and used as a detection signal.

For reference, induction electromotive force (V) = magnetic flux (B) x oscillation velocity (U) of the core and length (L) of the cable.

As described above, the cable unit for a security device according to the first embodiment of the present invention converts vibrations into induced electromotive force and analyzes a signal pattern to determine whether an intruder is invaded, and is not affected by moisture and malfunctions due to moisture. And there is an advantage that can prevent the malfunction.

3 and 4, in the cable unit for a security device according to the second embodiment of the present invention, three

holes

111, 112, and 113 are formed in a rubber magnet 110 having a circular cross section, and a rubber magnet The ground wire 120 is disposed in the first hole 111 formed at the center of the 110, and the core 135 wrapped by the silicon tube 130 is disposed in the second and

third holes

112 and 113, respectively. The rubber magnet 110 is covered by the polyester film 140, the polyester film 140 is covered by the sheath body 150, and the core 135 is disposed within the silicon tube 130. A gap S is formed between the core 135 and the silicon tube 130 so as to be vibrated.

The rubber magnet 110 is a product formed by mixing ferrite powder and NBR resin.

The cable unit for a security device according to the second embodiment of the present invention configured as described above is mounted to the fence 230 by a cable tie 235, as shown in FIG. When generated, the core 135 is vibrated in the silicon tube 130 in a state in which magnetic fields are formed in the second and

third holes

112 and 113 of the rubber magnet 110, thereby inducing the core 135 to the core 135. EMF is generated. At this time, the induced electromotive force is the voltage intensity is changed by the vibration speed of the conductor core (135), which is used as a detection signal.

As described above, the cable unit for a security device according to the second embodiment of the present invention converts vibrations into induced electromotive force and analyzes a signal pattern to determine whether an intruder is intruded, and is not affected by moisture and malfunctions due to moisture. And there is an advantage that can prevent the malfunction.

Referring to FIG. 5, the cable unit 1 for a security device according to the present invention is also mounted to the fence 230 by a cable tie 235, and one end is connected to the receiver 30, so that a detection occurred in the center of gravity. The signal is input to the receiver 30 and the other end is connected to the terminator 50 to absorb the sensing signal induced at the other end of the core to prevent the signal from being reflected at the other end and entering the receiver 30.

Referring to FIG. 6, the receiver 30 has an AM noise filter 31 for removing noise from a signal input from the cable unit 1 and an in-phase signal from a signal from which noise is removed by the AM noise filter 31. A differential amplifier 32 for removing noise, a band filter 33 for passing only a signal frequency band to be processed in a signal amplified by the differential amplifier 32, and blocking other signals; and the band filter 33 A gain adjustment amplifier 34 for amplifying the signal passing through the signal, a state monitor 36 for monitoring the disconnection and short-circuit of the cable, and a connection state with the terminator, and an opening / closing detector for detecting the disassembly of the receiver by an external intruder. (37), a central processing unit (35) for receiving a signal from the gain adjusting amplifier (34) and the state monitor (36), and analyzing the image information input from the CCTV (60) to determine whether or not the external intrusion is performed; The central processing unit 35 It is composed of an alarm device 38 for receiving a signal from the alarm.

The natural resonance frequency of the cable unit according to the present invention is 900 ~ 1020Hz.

The central processing unit 35 converts the input signal into a digital signal, extracts the cable inherent resonant frequency region and its strength, so that the intensity of the frequency of the input signal exceeds a certain level, and the input signal of such a level If a certain number of times is exceeded within a certain time, it is determined to be cut. If a signal exceeding an amplitude threshold of the natural resonance frequency is continuously input for a predetermined time, it is determined as a wall. In this case, the threshold value is adjusted in the field according to the installation place of the fence and the material and strength of the fence.

The state monitor 36 sends a loop current to the cable and monitors the amount of current returned. For example, if 4 mA of current is inputted, it is determined to be normal. If 20 mA of current is inputted, it is determined to be short-circuited. If 0 mA of current is inputted, it is determined that the cable is cut, and the normal operation state of the cable is monitored. do

Referring to FIG. 7, the terminator 50 includes a charger 51 for charging induced electromotive force induced at the other end of the cable 1, a discharger 52 for discharging a current charged in the charger 51, and It is composed of an opening and closing sensor 53 for detecting that the terminal is dismantled by the external intruder.

As a result, the terminator 50 absorbs the signal from the charger 51 to the other end of the cable 1, so that the signal provided to the other end of the cable is reflected from one end of the cable to the one end of the cable in which the receiver is mounted. To prevent them.

Claims

The core 15 wrapped by the silicon tube 13 and the rubber magnet 17 are alternately disposed around the ground line 11, and the core 15 and the rubber magnet 17 wrapped by the silicon tube 13 are alternately disposed. Aluminum tape 19 is taped, the aluminum tape 19 is covered by a braid 21, the braid 21 is covered by a sheath 23, and a core Cable unit for a security device, characterized in that the clearance (S) is formed between the core (15) and the silicon tube (13), so that the (15) can be vibrated in the silicon tube (13).
The method of claim 1,

Three cores 15 enclosed by the silicon tube 13 are disposed at intervals of 120 ° around the ground wire 11, and three rubber magnets 17 are also disposed at intervals of 120 ° around the ground wire 11. Cable unit for the security device, characterized in that.
Three holes 111, 112, and 113 are formed in the rubber magnet 110 having a circular cross section, and the ground wire 120 is disposed in the first hole 111 formed in the center of the rubber magnet 110, and the second hole 111 is disposed in the rubber magnet 110. And a core 135 wrapped by the silicon tube 130 in the third holes 112 and 113, respectively, and the rubber magnet 110 is covered by the polyester film 140, and the polyester film 140 is covered by the sheath body 150, and the clearance S is formed between the core 135 and the silicon tube 130 so that the core 135 can be vibrated in the silicon tube 130. Cable unit for the security device, characterized in that.
The method according to claim 1 or 3,

The receiver 30 is mounted to the fence 230 by the cable tie 235, one end of the core is connected to receive the detection signal, and the signal connected to the other end of the core is induced at the other end of the core so that the frequency is at the other end. Cable unit for a security device, characterized in that it further comprises a terminator (50) for preventing the input to the receiver 30 is reflected.
The method of claim 4, wherein

The receiver 30 includes an AM noise filter 31 for removing noise from a signal input from the cable unit 1 and a differential amplifier for removing in-phase noise from a signal from which the noise is removed by the AM noise filter 31. (32), a band filter (33) for passing only the signal frequency band to be processed in the signal amplified by the differential amplifier (32) and blocking other signals, and amplifying the signal passed through the band filter (33). A gain control amplifier 34 for monitoring the cable, a state monitor 36 for monitoring the disconnection and short-circuit of the cable, and a connection state with the terminator; an opening / closing detector 37 for detecting that the receiver is disassembled by an external intruder; A central processing unit (35) for receiving signals from the gain adjusting amplifier (34) and the state monitor (36), and interpreting the image information input from the CCTV (60) to determine whether an external invasion is made; and the central processing unit (35). Receive a signal from Oh, the cable unit for security devices, characterized in that consisting of an alarm device for sounding an alarm (38).
The method of claim 4, wherein

The terminator 50 is for preventing the carrier from being input to the receiver, the charger 51 for charging the induced electromotive force provided to the other end of the cable 1, and to discharge the current charged in the charger 51 Cable unit for a security device, characterized in that consisting of a discharger 52 for, and the opening and closing detector 53 for detecting that the terminal is dismantled by an external intruder.