WO2015163549A1 - 보안 펜스의 침입 감지 장치 - Google Patents
보안 펜스의 침입 감지 장치 Download PDFInfo
- Publication number
- WO2015163549A1 WO2015163549A1 PCT/KR2014/009959 KR2014009959W WO2015163549A1 WO 2015163549 A1 WO2015163549 A1 WO 2015163549A1 KR 2014009959 W KR2014009959 W KR 2014009959W WO 2015163549 A1 WO2015163549 A1 WO 2015163549A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- signal
- frequency
- security fence
- intrusion
- detection device
- Prior art date
Links
- 238000001514 detection method Methods 0.000 claims description 26
- 238000006243 chemical reaction Methods 0.000 claims description 17
- 230000007613 environmental effect Effects 0.000 claims description 5
- 238000000605 extraction Methods 0.000 claims description 3
- 238000005070 sampling Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 101100129500 Caenorhabditis elegans max-2 gene Proteins 0.000 description 3
- 230000007257 malfunction Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 238000013517 stratification Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/02—Mechanical actuation
- G08B13/12—Mechanical actuation by the breaking or disturbance of stretched cords or wires
- G08B13/122—Mechanical actuation by the breaking or disturbance of stretched cords or wires for a perimeter fence
Definitions
- the present invention relates to an intrusion detecting device of a security fence, and more particularly, to detect the distribution characteristic of the frequency components of the output signal of the charge amplifier connected to the shielded multi-core cable which is bound to the security fence, and thus to determine the overall vibration and partial The security fence intrusion detection device for determining whether or not the signal caused by the impact.
- Such a security system includes a locking device installed at a location that can enter a building such as doors and windows, a system that enables the mechanical operation of a crime prevention grate, an electronic monitoring device such as a camera that monitors an intruder's intrusion, and a security sensor.
- a security guard company's staff is dispatched by contacting a security guard company, Equipped
- fences are installed and arbitrary alarm systems are installed on the fences to enhance security.
- Figure 1 is a block diagram of a cable connection between the intrusion detection device using a common shielded multiconductor cable.
- the intrusion detecting apparatus 10 As shown in FIG. 1, the intrusion detecting apparatus 10 according to the related art has a shielded multi-core cable 1 for detecting an electrostatic force through an analog sensor unit 6, via a connecting cable 5. ASU l Connected.
- the shielded multi-core cable (1) is connected by a branch sleeve (3), the shielded multi-core cable (1) and the connecting cable (5) are connected by a cable adapter (4), the connecting cable (5) Is connected to the analog sensor unit 6.
- FIG. 2 is an exemplary view showing a state of use of the intrusion detection apparatus using a shielded multi-core cable according to the prior art. '
- the shielded multi-core cable 1 is installed in various fences 20 installed on the outer side, and the shielded multi-core cables 1 are connected to the analog sensor unit 6 through a connecting cable. (6) connected to the analog sensor unit .
- the alarm signal is output to the management system installed in the remote situation room.
- Korean Patent Registration No. 10-1046635 Invention name: Security fence intrusion detection system and intrusion detection method, if a plurality of detection caps connected to the data cable are attached to the security fence at regular intervals and intrusion occurs through the security fence.
- a security fence intrusion detection system has been proposed that detects vibrations on the security fence attached to the security fence, and transmits the detected information to the monitoring situation room.
- the intrusion detection system has a problem that the reliability of the security system is deteriorated due to malfunction caused by the external natural environment such as wind, rainy weather or climate change depending on the location and physical fence and the state where the security detector is installed. There is a problem that prevents efficient operation.
- the present invention detects the distribution characteristics of the frequency components of the output signal of the charge amplifier connected to the shielded multi-core cable bound to the security fence to determine whether the signal is due to the overall vibration and partial impact of the security fence
- An object of the present invention is to provide an intrusion detecting device for a security fence.
- the present invention provides an intrusion detection device of a security fence, comprising: a charge amplifier for amplifying the amount of charge generated by frictional charging inside a shielded multi-core cable and outputting it in the form of a voltage through an active filter; Signal output from the charge amplifier A signal converting unit configured to receive a signal, convert the amplitude of the received signal to a predetermined magnitude, increase <& decrease it, and sample the converted signal to detect a frequency component; A characteristic frequency extractor for analyzing a frequency component detected by the signal converter to detect a frequency signal having a characteristic different from that of a preset charging signal; And an intrusion determination unit configured to determine whether vibration or intrusion is performed by comparing the characteristic frequency signal detected by the characteristic frequency extraction unit with a preset vibration determination frequency signal and intrusion determination frequency signal.
- the signal conversion unit receives the signal output from the charge amplifier converts to a digital signal and outputs;
- a scaler configured to expand or reduce the frequency component so that the amplitude of the digital signal converted by the ADC is not deformed according to preset environmental information;
- a Fourier transform unit for detecting a frequency component in the signal enlarged or reduced by the scaler; And outputting a conversion signal to guarantee the accuracy of frequency analysis at a predetermined period to the ADC, and analyzing the amplitude of the signal output from the scaler to control the Fourier transformer to operate when the range of a preset threshold is exceeded.
- a conversion management unit receives the signal output from the charge amplifier converts to a digital signal and outputs;
- a scaler configured to expand or reduce the frequency component so that the amplitude of the digital signal converted by the ADC is not deformed according to preset environmental information;
- a Fourier transform unit for detecting a frequency component in the signal enlarged or reduced by the scaler; And outputting a conversion signal to guarantee the accuracy of frequency
- the scaler calculates an average amplitude value of the input signals when a signal continuously generated from a signal output from the ADC is input for a predetermined time, and calculates the average amplitude value from the amplitude value of the input signal. It is characterized in that the output by reducing the difference by the value.
- the conversion management unit according to the invention is characterized in that the range of the threshold value is set by reflecting the size information of the electrostatic force according to the natural environment.
- the vibration determination frequency signal and the intrusion determination frequency signal of the intrusion determination unit according to the present invention is characterized in that the frequency signal modeled according to the type of security fence set in advance.
- the present invention has the advantage of preventing the output of the false alarm by judging the fence vibration due to natural phenomena such as wind, heavy rain.
- the present invention is an advantage that can prevent the false alarm generated from the vibration generated by a large vehicle such as a tank, a tractive force, heavy equipment, such as moving near the fence or a fence and vibration generated by a low-flying vehicle There is this.
- the present invention is to adjust the input signal in advance based on real-time weather information By blocking the error alarm in advance, there is an advantage to improve the real-time alarm performance and the reliability of intrusion alarm.
- FIG. 1 is a block diagram showing a cable connection state of the intrusion detection apparatus using a conventional shielded multi-core cable.
- Figure 2 is an exemplary view showing a state in which the intrusion detection device using a shielded multi-core cable according to the prior art in the security fence.
- FIG. 3 is a block diagram showing the configuration of the security fence intrusion detection device according to the present invention
- FIG. 4 is a block diagram showing the configuration of a signal converter of the intrusion detection device of the security fence according to FIG.
- FIG. 5 is a graph illustrating an output signal when an intrusion occurs in the intrusion detection device of the security fence according to FIG. 3.
- FIG. 6 is a graph illustrating an output signal when vibration of the intrusion detection device of the security fence according to FIG. 3 occurs.
- FIG. 3 is a block diagram showing the configuration of the intrusion detection device of the security fence according to the present invention
- Figure 4 is a block diagram showing the configuration of the signal conversion unit of the intrusion detection device of the security fence according to FIG.
- the intrusion detecting apparatus 100 of the security fence detects the distribution characteristic of the frequency component of the output signal of the charge amplifier connected to the shielded multi-core cable, and thus the overall vibration and part of the security fence.
- a charge amplifier 110, a signal converter 120, a characteristic frequency extractor 130, and an intrusion determination unit 140 are configured to determine whether or not the signal is due to a normal shock.
- the charge amplifier 110 is connected to an analog sensor unit (Analog Sensor Unit) for detecting a signal generated by the triboelectric charge inside the shielded multi-core cable that changes the electrostatic electromotive force when an external hum or a stratification is applied, All signals detected by analog sensor The load is amplified and output in the form of voltage through an active filter.
- an analog sensor unit Analog Sensor Unit
- the signal converter 120 receives a signal output from the charge amplifier 110, converts the amplitude of the received / signal to be enlarged or reduced to a predetermined size, and detects a frequency component by sampling the converted signal.
- the configuration includes a ADC nalog to Digit Converter / 121, a scaler 122, a Fourier transform unit 123, and a conversion management unit 124.
- the ADC 121 receives a signal output from the charge amplifier 110, converts it into a digital signal, and outputs the digital signal.
- the scaler 122 is configured to enlarge or reduce the amplitude of the digital signal converted by the ADC 121 so that the frequency component is not deformed according to preset environmental information, and outputs the converted signal from among the signals output from the ADC 121.
- a signal generated continuously for a predetermined time is input, an average amplitude value of the input signals is calculated, and the output signal is reduced by a difference of the calculated average amplitude value from the amplitude value of the input signal.
- the shielded multi-core cable installed in the security fence is suitable for natural environmental conditions such as natural wind and rainfall .
- the output signal of the charge amplifier 110 due to the vibration is influenced by the direction and speed of the wind depending on the position where the security fence is installed.
- the amplitude value of the signal converted by the ADCCL21 is proportionally enlarged or reduced. Convert and output
- the Fourier transform unit 123 is configured to sample a signal enlarged or reduced by the scaler 122, converts the signal into a frequency component, and outputs the frequency component, and digitizes a spectrum and an amplitude having a resolution of 0.25 Hz. That is, when the Fourier transform unit 123 performs the sampling of the input signal, for example, 1 second only 2 n times, the sample data is calculated from the sampling start time to the sampling finish time.
- a fast Fourier transform is performed on the calculated sampling data in real time to calculate a value of each frequency, and a frequency value [f (max)] having the largest maximum magnitude between a start time and a finish time for each unit time and its voltage. Allow the value to be stored.
- the conversion manager 124 outputs a conversion signal for guaranteeing the accuracy of the frequency analysis to the ADC 121 at regular intervals, and the signal output from the scaler 122 is generated.
- the Fourier transform unit 123 is controlled to operate when the width is exceeded and the preset threshold is exceeded.
- the conversion manager 124 outputs a conversion signal for SOC (Start of conversion) of the ADC 121 at a predetermined time for sampling (sampling) at regular intervals to ensure analysis accuracy of frequency components. do.
- the conversion manager 124 sets the threshold value by reflecting the magnitude (signal amplitude) information of the electrostatic force according to the natural environment (for example, wind, temperature, rainfall information) information set by the user. Be sure to
- the security fence in order to prevent unnecessary signals from being detected when the security fence vibrates under the influence of wind, the range of the maximum and minimum thresholds of amplitude is varied.
- the security fence can be configured to be automatically adjusted when the condition information is input to prevent the malfunction signal is detected. have.
- the characteristic frequency extractor 130 analyzes the frequency components detected by the signal converter 120 to detect frequency signals having characteristics different from those of the preset charging signal. Due to its wide oscillation, the charge signal charged in the shielded multicore cable due to the narrow range of impact has different frequency characteristics and extracts the characteristic frequency signal that can distinguish vibration and shock. ⁇
- the characteristic frequency is a frequency value [f (max)] having a maximum magnitude, and a frequency value [f (max-1)] having a second magnitude.
- 5 (a) and 5 (b) show the output signal of the charge amplifier at the time of stratification (intrusion), and the output signal of the charge amplifier due to the impact is close to the frequency f (max) having the maximum value f (max). max-l), f (max-2), and f (max-3) frequencies are densely distributed.
- 6 (a) and 6 (b) show the output signal of the charge amplifier during vibration, and the output signal of the charge amplifier during vibration caused by wind or the like is f (max), f (max-l), f
- the frequency values of (max-2) and f (max-3) show sporadic distribution.
- the intrusion determination unit 140 compares the characteristic frequency signal detected by the characteristic frequency extraction unit 130 with a preset vibration determination frequency signal and an intrusion determination frequency signal to determine whether it is vibration or intrusion.
- the frequency signal for determining vibration and the frequency signal for determining intrusion is a security fence It is a value obtained by analyzing the frequency distribution characteristics by morphing according to the type of.
- the settling determination unit 140 arranges the frequency values according to the output signal magnitude of the charge amplifier and compares them with the modeled values, and according to the comparison result, the signal output from the charge amplifier is caused by intrusion. Determine whether the vibration caused by the perceived wind or the like.
- vibration determination frequency signal and the intrusion determination frequency signal are frequency signals modeled according to a preset security fence type.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Burglar Alarm Systems (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/304,188 US9830786B2 (en) | 2014-04-24 | 2014-10-22 | Intrusion sensing apparatus for security fence |
JP2017507652A JP6267829B2 (ja) | 2014-04-24 | 2014-10-22 | セキュリティフェンスの侵入感知装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020140049531A KR101622021B1 (ko) | 2014-04-24 | 2014-04-24 | 보안 펜스의 침입 감지 장치 |
KR10-2014-0049531 | 2014-04-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2015163549A1 true WO2015163549A1 (ko) | 2015-10-29 |
Family
ID=54332689
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2014/009959 WO2015163549A1 (ko) | 2014-04-24 | 2014-10-22 | 보안 펜스의 침입 감지 장치 |
Country Status (4)
Country | Link |
---|---|
US (1) | US9830786B2 (ko) |
JP (1) | JP6267829B2 (ko) |
KR (1) | KR101622021B1 (ko) |
WO (1) | WO2015163549A1 (ko) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107204106A (zh) * | 2017-07-11 | 2017-09-26 | 河北金锁安防工程股份有限公司 | 一种安防系统中滤除虚假警情的报警方法及系统 |
CN109218288A (zh) * | 2018-08-01 | 2019-01-15 | 北京科技大学 | 一种针对工业机器人控制系统的网络入侵检测系统 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
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KR102029701B1 (ko) * | 2018-03-22 | 2019-10-08 | 주식회사 아이언에스 | 케이블 센서 상태에 근거한 방범방재시스템의 비상상황 감지시스템 |
WO2020107358A1 (zh) * | 2018-11-30 | 2020-06-04 | 唐山曹妃甸联城科技有限公司 | 一种电子围栏系统及其控制设备 |
IT202000001495A1 (it) * | 2020-01-27 | 2021-07-27 | Sensore di sicurezza e sistema di sicurezza antiintrusione includente detto sensore | |
CN117029936B (zh) * | 2023-10-10 | 2024-01-23 | 武汉能钠智能装备技术股份有限公司 | 异常信号实时拦截装置、系统及方法 |
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Also Published As
Publication number | Publication date |
---|---|
KR20150123082A (ko) | 2015-11-03 |
JP6267829B2 (ja) | 2018-01-24 |
US9830786B2 (en) | 2017-11-28 |
JP2017514258A (ja) | 2017-06-01 |
KR101622021B1 (ko) | 2016-05-17 |
US20170039825A1 (en) | 2017-02-09 |
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