KR100966299B1 - Safety system using shielded twisted pair cable - Google Patents

Abstract

PURPOSE: A security system using a shielded twisted pair cable is provided to secure 100 percent of accuracy without false alarm by removing a response to an unnecessary interference phenomenon such as animal, snow, rain, lightening, high voltage power line, and train. CONSTITUTION: A security system using a shielded twisted pair cable comprises a shielded twisted pair cable(100), an end part(200), and an analog sensor unit(300). The end part is formed on one side end of the shielded twisted pair cable. The other side of the shielded twisted pair cable is connected to the analog sensor unit. The shielded twisted pair cable changes static electromotive force according to the external power or impact. The analogue sensor unit detects change of static electromotive force of the shielded twisted pair cable according to the input of the negative charge among the power outage electromotive force.

Description

Security system using shielded twisted pair cable

The present invention relates to a perimeter security system, and it is possible to establish a security system through real-time intrusion detection for 24 hours, and to perform a three-dimensional monitoring and quick situation coordination in connection with CCTV in operation when necessary.

Recently, security systems have been developed to prevent crimes such as theft and robbery.

Such a security system includes a locking device installed at a location that can enter a building such as a door and a window, a system that enables mechanical operation of a security grate, a camera for monitoring an intruder's intrusion, and an electronic monitoring device such as a security sensor. Etc.

In addition, a home automation system has been developed that detects entrance particles of a house by a camera or a sensor and monitors the intrusion of external intruders as well as lighting of a lighting device.

In particular, in recent years, when the intrusion of external intruders is detected by security cameras, security sensors, etc., due to the increased interest in security systems, security guards, etc. have been contacted and staff of security guards are equipped.

In addition, in order to enhance security in any area, fences are installed and arbitrary alarm systems are installed on the fences to enhance security.

However, the conventional method system has a problem in that the installation cost is high, and the maintenance costs of the security camera and the security sensor are also high.

In the prior art, there is a problem in that the security guard company wastes unnecessary expenses even if there is no invader by responding sensitively to the shaking of the branches or the movement of the animal according to the installation position of the security sensor.

The present invention is to solve the above-mentioned problems, it can not only provide the outer security system without supplying a separate power to the sensor, but also enhance the security by operating only on physical shocks without acting on electrical shocks. It is an object of the present invention to provide a security system using a shielded twisted pair cable.

According to one aspect of a security system using a shielded twisted pair cable according to the present invention, a shielded twisted pair cable in which electrostatic electromotive force changes when an external force or an impact is applied; An end portion connected to one end of the shielded twisted pair cable to provide a load; And an analog sensor unit configured to generate an alarm after detecting a change in the static charge of the shielded twisted pair cable when the negative charge of the changed electrostatic force is input from the shielded twisted pair cable.

With the above-described configuration, the security system using the shielded twisted pair cable according to the present invention has an excellent effect of not generating any electric signal to the shielded twisted pair cable and the fence connected as a passive sensor and forming an electromagnetic field according to the current.

This principle does not respond to contact with small animals, climatic phenomena such as snow, rain, lightning, and unnecessary interference phenomena such as high voltage lines and railways, and guarantees 100% accuracy without false alarms.

In addition, by using a shielded twisted pair cable as a sensor, there is no need for a separate power supply for the sensor, thereby minimizing installation and maintenance costs.

The following detailed description of specific embodiments provides several descriptions of specific embodiments of the present invention. However, the present invention can be implemented in many different ways, which are defined and covered by the claims. The detailed description is described with reference to the drawings, wherein like reference numerals refer to the same or functionally similar elements.

The terminology used in the description provided herein is for the purpose of describing particular embodiments of the invention only and should not be construed as limiting or limiting the invention to any particular method. Furthermore, embodiments of the present invention may include a number of novel features which are necessary to represent the overall desirable properties of the invention or to practice the invention provided herein.

Furthermore, embodiments of the present invention may include a number of novel features which are necessary to represent the overall desirable properties of the invention or to practice the invention provided herein.

1 is a view of a security system using a shielded twisted pair cable according to the present invention. The security system using a shielded twisted pair cable according to the present invention includes a shielded twisted pair cable 100, an end portion 200, and an analog sensor unit 300.

The shielded twisted pair cable 100 has a terminal portion 200 formed at one end thereof, and the other side thereof is connected to the analog sensor unit 300. Such a shielded twisted pair cable 100 is changed in electrostatic electromotive force when an external force or an impact is applied.

Termination 200 is connected to one end of the shielded twisted pair cable 100 to provide a load.

The analog sensor unit 300 detects a change in the static charge of the shielded twisted pair cable 100 and generates an alarm when negative charges of the changed electrostatic force are input from the connected shielded twisted pair cable 100.

In this case, the analog sensor unit 300 and the shielded twisted pair cable 100 are connected through the coaxial cable 400, and the shielded twisted pair cable 100 and the coaxial cable 400 are sealed through the cable adapter 410.

Meanwhile, as illustrated in FIG. 2, the analog sensor unit 300 includes a static charge amplifier 310, a voltage amplifier 320, a signal shape unit 330, a sensitivity controller 340, and a noise removing filter 350. ), An abnormal signal providing unit 360, a timing circuit unit 370, an output and alarm unit 380, a signal scaler 390, and a remote diagnosis unit 500.

The electrostatic charge amplifier 310 of the analog sensor unit 300 converts the electrostatic charge of the electrostatic electromotive force changed from the shielded twisted pair cable 100 into a voltage.

In this case, as shown in FIG. 3, the shielded twisted pair cable 100 is connected to the first resistor unit 110 connected in series from the termination unit 200 and the first resistor unit 110 in series and terminated ( It is implemented as a first capacitor 120 to charge the static charge generated in connection with the 200.

The coaxial cable 400 is connected to the shielded twisted pair cable 100 including a second capacitor 420 that charges the static charge generated from the shielded twisted pair cable 100.

The analog sensor unit 300 is connected in series with the coaxial cable 400 and charges the static charge generated from the negative end of the electrostatic charge amplifier 310, the feedback resistor 311, and the shielded twisted pair cable 100. The second resistor unit 313 connected in parallel with the feedback capacitor, and the second storage unit, the feedback resistor unit 311 and the feedback capacitor 312 are connected in parallel to the (-) end, while the (+) end It is connected to this ground and when static electricity flows in, it converts the static charge into voltage and outputs it.

The voltage amplifier 320 of the analog sensor unit 300 amplifies the voltage converted from the electrostatic charge amplifier 310 to a predetermined size.

The signal shape unit 330 of the analog sensor unit 300 converts the voltage amplified by the voltage amplifier 320 into a digital signal.

On the other hand, the sensitivity adjusting unit 340 adjusts the sensitivity between 4dB to 40dB according to the type of fan, the installation environment, the type of sensor cable and the person installing. That is, the first stage (4 to 10 dB) to the second stage (15 to 21 dB), the third stage (25 to 30 dB), the fourth stage (31 to 34 dB) and the fifth stage (35 to 40 dB) do.

In addition, the noise removing filter 350 removes noise of the voltage amplified by the voltage amplifier 320.

In addition, the abnormal signal providing unit 360 removes a noise signal generated from the shielded twisted pair cable 100.

In addition, the timing circuit unit 370 converts the signal made in the form of a digital signal so that the length of the DC pulse is constant to adjust the alarm output time constant.

The output and alarm unit 380 applies a solid state relay to output a contact signal. In this case, the LED display unit 381 displays a signal generated when the shielded twisted pair cable 100 is shorted or disconnected.

Meanwhile, the signal accumulator 390 charges the capacitor for a predetermined time according to a predetermined resistance value based on a predetermined resistance value due to continuous intrusion in which external force or impact is continuously applied. When the resistance reaches the maximum value, an alarm is triggered.

In addition, the remote diagnosis unit 500 connects the voltage supplied to the analog sensor unit 300 through the power supply unit to the feedback resistor unit 311, and sets the voltage supplied to the analog sensor unit 300 at a preset time (0.5). Seconds to 1 second) artificially flow to the shielded twisted pair cable 100 to check whether the alarm occurs.

The security system using a shielded twisted pair cable may further include a power supply unit and a surge and lightning protection unit.

Hereinafter, an operation process of a security system using a shielded twisted pair cable will be described.

First, the terminal 200 is formed at one end of the shielded twisted pair cable 100 and the other side is connected to the analog sensor unit 300.

In this case, the analog sensor unit 300 and the shielded twisted pair cable 100 are connected through the coaxial cable 400 and sealed through the cable adapter 410.

The shielded twisted pair cable 100 is generated by being connected in series from the first resistor unit 110 and the first resistor unit 110 connected in series from the terminal unit 200 having a load, and connected to the terminal unit 200 in series. The first capacitor 120 for charging the static charge is implemented.

The second capacitor 420 of the coaxial cable 400 is connected to the first resistor unit 110 and the first capacitor 120 and charges the static charge generated from the shielded twisted pair cable 100.

In addition, the analog sensor unit 300 is connected in series with the coaxial cable 400, the static charge generated from the negative end of the electrostatic charge amplifier 310, the feedback resistor 311, the shielded twisted pair cable 100 The second resistor unit 313 connected in parallel with the feedback capacitor 312 for charging the second storage unit, the feedback resistor unit 311 and the feedback capacitor 312 are connected in parallel to the (-) end, , (+) Stage is connected to the ground and consists of an amplifying unit for converting the static charge into voltage when the static electricity flows in.

When an external force or an impact is applied to the shielded twisted pair cable 100 connected as described above, a minute static charge qin is generated.

The electrostatic charge generated in the shielded twisted pair cable 100 is charged in the feedback capacitor 312 of the analog sensor unit 300.

Meanwhile, the feedback capacitor 312 discharges (t = Rf * Cf) at a t-time through the feedback resistor part 311 of the analog sensor unit 300.

At this time, the static electricity generated in the shielded twisted pair cable 100 is distributed to the first capacitor 120 of the shielded twisted pair cable 100, the capacitor of the coaxial cable 400, and the feedback capacitor 312 of the analog sensor unit 300. .

That is, the static charge (qin) generated in the shielded twisted pair cable 100 is as shown in [Equation 1].

Here, qin is the static charge generated in the shielded twisted pair cable 100, qc is the first capacitor 120 of the vehicle twisted pair cable, qinp is the second capacitor 420 and qf of the coaxial cable 400 is the analog sensor unit 300 ) Is a feedback capacitor 312.

Applying this to the electrostatic equation (q = U * C), it becomes the same as [Equation 2].

At this time, when Uinp = 0, it becomes a condition of normal operation. That is, when the inverting and noninverting input voltage difference is 0.

Here, the gain of the static charge amplifier 310 becomes qin = Uf * Cf, and Uout = Uf = qin / Cin, so that Gc = Uout / qin and 1 / Cf.

Therefore, the output voltage of the static charge amplifier 310 is related only to the input charge and the feedback capacitor 312. That is, the kind of length of the shielded twisted pair cable 100 does not affect the output voltage.

The electrostatic charge input from the shielded twisted pair cable 100 is amplified by the electrostatic charge amplifier 310 of the analog sensor unit 300 and then converted into a voltage. That is, when the static charge charged in the feedback capacitor 312 is discharged, it is converted into a voltage.

Thereafter, the voltage amplifier 320 of the analog sensor unit 300 amplifies the voltage converted from the static charge amplifier 310 to a predetermined size. At this time, the voltage amplifier 320 amplifies the voltage through a high-performance, precise, low-power OP-AMP, the voltage amplifier is applied in two steps to make the required voltage. In this case, the voltage amplifier 320, which is the first stage amplifier, amplifies a small voltage input from the shielded twisted pair cable 100 to a preset voltage.

Thereafter, amplification is performed for the second stage amplification. This is for the sensitivity control unit 340.

When amplified in this manner, the sensitivity adjusting unit 340 adjusts the sensitivity between 4dB and 40dB according to the type of the fan, the installation environment, the type of the sensor cable, and the person installing it. This may vary depending on the type of fence, the installation environment, the type of sensor cable, and the installer's sense of installation. In this case, the sensitivity adjusting unit 340 may include a first step (4 to 10 dB) to a second step (15 to 21 dB), a third step (25 to 30 dB), a fourth step (31 to 34 dB), and a fifth step ( 35 to 40 dB).

The signal shape unit 330 of the analog sensor unit 300 converts the voltage amplified by the voltage amplifier 320 into a digital signal.

The analog sensor unit 300 detects a change in the static charge of the shielded twisted pair cable 100 and generates an alarm when negative charges of the changed electrostatic force are input from the connected shielded twisted pair cable 100.

On the other hand, since the analog sensor unit 300 operates sensitively to external noise signals, a precise filter design is required. Accordingly, the noise removing filter 350 removes noise of the voltage amplified by the voltage amplifier 320 so that only a signal of a specific frequency region may be determined using a high, low, or band pass filter.

In addition, the abnormal signal providing unit 360 removes a noise signal generated from the shielded twisted pair cable 100. The abnormal signal providing unit 360 may notify the abnormal installation by driving the LED display unit 381 when the shielded twisted pair cable 100 is short-circuited, disconnected, or not connected.

The LED display unit 381 displays a signal generated when the shielded twisted pair cable 100 is shorted or disconnected.

In addition, the timing circuit unit 370 converts the signal made in the form of a digital signal so that the length of the DC pulse is constant to adjust the alarm output time constant. That is, the pulse length of the digital signal shaped and output in the previous step is made constant, the logic value is separated into levels of '1' and '0', and the alarm output time is determined.

The output and alarm unit 380 applies a solid state relay to output a contact signal.

시간을 이용하며, 10 단계의 건반형 스위치(저항값을 변경)를 사용한다. 즉, 저항값이 올라가면 충전 시간이 늘어지게 하는 것으로, 저항값이 최대가 되면 연속 침입마다 캐패시터에 축적하고 논리값을 '1'로 출력하여 동작하게 한다. On the other hand, the signal scaler 390 charges the capacitor for a predetermined time according to a predetermined resistance value due to the continuous intrusion of the external force or impact continuously applied to the shielded twisted pair cable 100 When the resistance reaches maximum, an alarm is generated. This is a function to accumulate minute static charges caused by continuous intrusion so that an alarm sounds.

Use time and use a 10-stage keyboard switch (change the resistance value). In other words, if the resistance value is increased, the charging time is increased. If the resistance value is maximum, the charge value is accumulated in the capacitor for each continuous intrusion and the logic value is output as '1' to operate.

In addition, the remote diagnosis unit 500 connects the voltage supplied to the analog sensor unit 300 through the power supply unit to the feedback resistor unit 311, and artificially connects the voltage supplied to the analog sensor unit 300 for a preset time. The shielded twisted pair cable 100 is sent to check whether or not an alarm occurs.

Although the foregoing detailed description has shown, described, and mentioned the basic novel features of the invention as applied to the various embodiments, various omissions, substitutions, and changes in the form and details of the illustrated system may be made without departing from the intention of the invention. It will be appreciated that changes may be made by those skilled in the art.

1 is a view showing a security system using a shielded twisted pair cable according to the present invention.

Figure 2 is a functional block diagram showing a detailed configuration of an analog sensor unit of the security system using a shielded twisted pair cable according to FIG.

3 is a diagram illustrating a virtual circuit between a shielded twisted pair cable and an analog sensor unit in a security system using a shielded twisted pair cable according to FIG. 1.

<Explanation of symbols for the main parts of the drawings>

100: shielded twisted pair cable 200: terminal

300: analog sensor unit 310: electrostatic charge amplifier

320: voltage amplifier 330: signal shape

340: sensitivity control unit 350: noise reduction filter

360: abnormal signal providing unit 370: timing circuit unit

380: output and alarm unit 390: signal accumulation unit

500: remote diagnosis unit

Claims (15)

delete delete delete Shielded twisted pair cable for changing electrostatic electromotive force when external force or impact is applied; An end portion connected to one end of the shielded twisted pair cable to provide a load; A coaxial cable connecting the analog sensor unit and the shielded twisted pair cable; And Electrostatic charge amplification converting the static charge of the electrostatic electromotive force changed from the shielded twisted-pair cable into a voltage to detect an electrostatic charge change of the shielded twisted-pair cable when a negative charge is input from the electrostatic electromotive force changed in the shielded twisted-pair cable An analog sensor unit having a voltage amplification unit configured to amplify the voltage converted from the electrostatic charge amplifier into a predetermined magnitude, and a signal shape unit converting the voltage amplified by the voltage amplifier into a digital signal; And Due to the continuous intrusion to which the external force or impact is continuously applied, the minute electrostatic charge generated in the shielded twisted pair cable is charged to the capacitor for a predetermined time according to a predetermined resistance value, and an alarm is generated when the resistance value is maximum. Security system using a shielded twisted pair cable including a signal scale. The method of claim 4, wherein The shielded twisted pair cable, Shielded twisted pair cable having a first resistor connected in series from the termination and a first capacitor connected in series from the first resistor and charged with the electrostatic charge generated by the termination . The method of claim 5, The coaxial cable, And a shielded twisted pair cable connected to the shielded twisted pair cable and having a second capacitor to charge the static charge generated from the shielded twisted pair cable. The method of claim 6, The analog sensor unit, A second resistor unit connected in series with the coaxial cable and connected in parallel with a negative terminal of the electrostatic charge amplifier and a feedback resistor unit, and a feedback capacitor for charging the electrostatic charge generated from the shielded twisted pair cable; And The second storage unit, the feedback resistor unit and the feedback capacitor are connected in parallel to the negative terminal, and the positive terminal is connected to the ground, and an amplifying unit converts the static charge into a voltage when the static charge flows in. Security system using one shielded twisted pair cable. The method of claim 4, wherein Security system using a shielded twisted pair cable further comprises a sensitivity control unit for adjusting the sensitivity between 4dB to 40dB according to the type of the fan, the installation environment, the type of sensor cable and the person installing it. The method of claim 4, wherein The security system using the shielded twisted pair cable, And a noise removing filter for removing noise of the voltage amplified by the voltage amplifier using a frequency band pass filter. The method of claim 9, The security system using the shielded twisted pair cable, Security system using a shielded twisted pair cable further comprises an abnormal signal providing unit for removing a noise signal generated from the shielded twisted pair cable. The method of claim 10, The security system using the shielded twisted pair cable, A timing circuit unit for converting a signal made in the form of a digital signal so that the length of the DC pulse is constant to adjust the alarm output time constantly; And Security system using a shielded twisted pair cable further comprising an output and an alarm unit for outputting a contact signal by applying a solid state relay. delete The method of claim 4, wherein The security system using the shielded twisted pair cable, Security system using a shielded twisted pair cable further comprises an LED display for displaying a signal generated when the shielded twisted pair cable is shorted or disconnected. The method of claim 4, wherein The security system using the shielded twisted pair cable, The remote diagnosis unit connects the voltage supplied to the analog sensor unit through a power supply unit to a feedback resistor, and sends the voltage supplied to the analog sensor unit artificially to the shielded twisted pair cable for a preset time to check whether an alarm occurs. Security system using a shielded twisted pair cable further included. The method of claim 4, wherein The security system using the shielded twisted pair cable, Security system using a shielded twisted pair cable further comprising a power supply and a surge and lightning protection.

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