KR20030093708A - security system using patch array antenna - Google Patents
security system using patch array antenna Download PDFInfo
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- KR20030093708A KR20030093708A KR1020020031524A KR20020031524A KR20030093708A KR 20030093708 A KR20030093708 A KR 20030093708A KR 1020020031524 A KR1020020031524 A KR 1020020031524A KR 20020031524 A KR20020031524 A KR 20020031524A KR 20030093708 A KR20030093708 A KR 20030093708A
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
- H01Q21/0075—Stripline fed arrays
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
- H01Q3/2605—Array of radiating elements provided with a feedback control over the element weights, e.g. adaptive arrays
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Abstract
본 발명은 패치 어레이 안테나를 이용한 전자파 보안 시스템에 관한 것으로, 특히 송신 안테나와 수신 안테나에 공히 동일한 패치 어레이 안테나를 이용한 초 지향성 안테나를 사용하여 아주 좁은 폭의 전파 통로를 생성시켜 전파 통로에 침입하는 물체를 실시간으로 감지하게 하는 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetic wave security system using a patch array antenna. In particular, an object invading a radio wave path by generating a very narrow propagation path using a super directional antenna using a patch array antenna that is identical to both a transmitting antenna and a receiving antenna. To be detected in real time.
상기 목적을 위한 본 발명은 메인 콘트롤 모듈과 전자파 수신 모듈 및 전자파 송신 모듈로 이루어지고, 상기 수신 모듈과 송신 모듈 각각의 송, 수신 안테나를 패치 어레이 안테나로 구성하되, 각 패치에 공급되는 고주파 전류의 위상을 모두 동상이 되게 급전 패턴을 급전 포인트에서 등거리가 되게 구성하고, 내측의 가로열 3번 및 4번 열의 패치 엘레멘트 에는 다른 패치 보다 2배의 전력을 공급하게 구성함을 특징으로 한다.The present invention for the above object is composed of a main control module, an electromagnetic wave receiving module and an electromagnetic wave transmitting module, wherein each of the transmitting and receiving antennas of the receiving module and the transmitting module comprises a patch array antenna, the high frequency current supplied to each patch The feed pattern is configured to be equidistant from the feed point so that all phases are in phase, and the patch elements in rows 3 and 4 of the inner row are supplied twice as much as the other patches.
Description
본 발명은 송신 안테나와 수신 안테나에 공히 동일한 패치 어레이 안테나를 이용한 초 지향성 안테나를 사용하여 아주 좁은 폭의 전파 통로를 생성시켜 전파 통로에 침입하는 물체를 실시간으로 감지하는 패치 어레이 안테나를 이용한 전자파 보안 시스템에 관한 것이다.The present invention creates a very narrow propagation path using a super directional antenna using the same patch array antenna for both the transmitting and receiving antennas, and an electromagnetic wave security system using a patch array antenna for detecting an object invading the radio path in real time. It is about.
일반적으로 주요 보안 시설 및 위험 시설 등에 대한 비 인가자의 접근을 미연에 방지하여 재산상, 보안상 피해를 최소화하는 보안 시스템은 주로, CCTV를 이용한 시스템(카메라 렌즈를 통한 대상 감시)과 레이저를 이용한 시스템(레이저 빔을 이용한 물체 인식), 그리고 적외선을 이용한 시스템(적외선 파장을 이용한 물체 인식) 등이 알려져 있다.In general, the security system that minimizes property and security damage by preventing unauthorized access to major security facilities and hazardous facilities in advance is mainly a system using CCTV (target monitoring through camera lens) and a laser system. (Object recognition using a laser beam), and a system using an infrared ray (object recognition using an infrared wavelength) are known.
상기 이들의 보안 시스템은 분진 및 기후의 변화 등 환경 변화에 따라 감시성능이 크게 저하되는 문제점이 있고, 감지 거리가 15M에서 200M 정도밖에 되지 못해 시설의 보안에 매우 미흡한 점이 있으며, 감지 폭이 일정각도 범위로 퍼지거나(적외선 일 경우 50∼90도 범위로 퍼짐), 폭이 매우 좁아(레이저일 경우 0.25㎜) 신뢰성이 크게 저하되는 문제점이 있다.These security systems have a problem that the monitoring performance is greatly degraded according to environmental changes such as dust and climate change, and the detection distance is only 15M to 200M, which is very insufficient for the security of the facility. It spreads in a range (in the case of infrared rays, it spreads in the range of 50 to 90 degrees), or a very narrow width (0.25 mm in the case of a laser) has a problem that the reliability is greatly reduced.
본 발명은 감지 거리가 길고, 감지폭의 조정이 가능하게 하며, 분진 및 기후의 변화 등 환경변화에 영향이 없도록 하여 보안 시스템의 신뢰성을 향상 시킴을 목적으로 한다.The present invention aims to improve the reliability of a security system by providing a long sensing distance, enabling to adjust a sensing width, and not affecting environmental changes such as dust and climate change.
본 발명은 송신기와 수신기 사이에 초고주파 신호를 이용한 전자장 영역을 형성하여 감시구역 내의 침입개체를 감지하도록 함을 기술적 과제로 삼는다.An object of the present invention is to form an electromagnetic field using an ultra-high frequency signal between a transmitter and a receiver to detect an invading object in a surveillance zone.
상기 과제를 달성하기 위한 본 발명은 메인 콘트롤 모듈과 전자파 수신 모듈 및 전자파 송신 모듈로 이루어지고, 상기 수신 모듈과 송신 모듈 각각의 송, 수신 안테나를 패치 어레이 안테나(Patch Array Antenna)로 구성하되, 각 패치에 공급되는 고주파 전류의 위상을 모두 동상이 되게 급전 패턴을 급전 포인트에서 등거리가되게 구성하고, 내측의 가로열 3번 및 4번 열의 패치 엘레멘트(element) 에는 다른 패치 보다 2배의 전력을 공급하게 구성함을 특징으로 한다.In order to achieve the above object, the present invention comprises a main control module, an electromagnetic wave receiving module, and an electromagnetic wave transmitting module, wherein each of the transmitting and receiving antennas of the receiving module and the transmitting module is configured as a patch array antenna. The feeding pattern is configured to be equidistant from the feeding point so that all phases of the high frequency current supplied to the patch are in phase, and twice as much power is supplied to the patch elements in rows 3 and 4 of the inner row. It is characterized by the configuration.
도 1는 본 발명의 전체 구성 회로 블록도1 is a block diagram of the overall configuration of the present invention
도 2는 본 발명의 전자파 송/수신 모듈에 적용되는 송/수신 안테나 패치 엘레멘트 배열도2 is an arrangement diagram of a transmit / receive antenna patch element applied to an electromagnetic wave transmit / receive module of the present invention.
<도면의 주요부분에 대한 부호 설명><Description of Signs of Major Parts of Drawings>
10 : 메인 콘트롤 모듈 20 : 전자파 수신 모듈10: main control module 20: electromagnetic wave receiving module
22 : 수신 안테나 30 : 전자파 송신 모듈22: receiving antenna 30: electromagnetic wave transmitting module
36 : 송신 안테나 A : 패치 엘레멘트36 transmit antenna A: patch element
D : 급전 포인트D: feeding point
본 발명은 도 1에서 보여지듯이 메인 콘트롤 모듈(10)과 전자파 수신 모듈(20) 및 전자파 송신 모듈(30)로 이루어져 있으며, 특히 메인 콘트롤 모듈(10)과 전자파 수신 모듈(20)은 각각 내부의 통신 포트(15)(21)와 연결되고, 전자파 수신 모듈(20) 및 전자파 송신 모듈(30)은 미 도시한 DC전원으로 연결되어 있다.The present invention consists of a main control module 10, an electromagnetic wave receiving module 20 and an electromagnetic wave transmitting module 30, as shown in Figure 1, in particular the main control module 10 and the electromagnetic wave receiving module 20 It is connected to the communication port 15, 21, and the electromagnetic wave receiving module 20 and the electromagnetic wave transmitting module 30 is connected to a DC power source (not shown).
상기, 메인 콘트롤 모듈(10)은 전자파 수신 모듈(20)로부터 받은 디지털 신호를 중앙 연산장치(11)를 통하여 표시판넬(12)에 보내기도 하고, 경보 발생부(13)에 침입경보를 전달하게 되며, 제어판넬(14)에서는 수신 모듈(20)의 수신신호 등을 조작함으로서 감지폭과 감지시간 등을 제어하게 된다.The main control module 10 may also transmit the digital signal received from the electromagnetic wave receiving module 20 to the display panel 12 through the central processing unit 11, and transmit the intrusion alarm to the alarm generator 13. The control panel 14 controls the detection width and the detection time by operating the reception signal of the reception module 20.
그리고, 수신 모듈(20)은 수신 안테나(22)를 지향성이 우수한 패치 어레이 안테나를 사용하여 수신 통로가 아주 좁은 특성을 가지며, 이러한 협대역의 경계선상을 침입하는 물체를 실시간으로 감지할 수 있도록 수신신호를 저잡음 증폭기(23)를 통하여 주파수 변환, 증폭하여 변조된 신호를 신호복조기(24)에서 추출하고, 이 추출된 신호는 신호증폭기(25)에서 증폭한 다음 대역 필터(26)를 통하여 불필요 신호는 제거하고 전파정류회로(27)에서 직류로 변환하며, 전압비교회로(28) 및 A/D컨버터(29)에서 디지털 신호로 변환 되며, 이 신호는 중앙연산장치(20-1)에서 제어하고, 통신포트(21)를 통하여 통신을 수행한다. 따라서 수신 모듈(20)은 A/D컨버터(29)의 레벨 조정 및 전원상태, 에러상황 등을 메인 콘트롤 모듈(10)에보내기도 하고 조정신호를 주고받기도 한다.In addition, the reception module 20 uses a patch array antenna having excellent directivity to the reception antenna 22 to have a reception path having a very narrow characteristic, and to receive an object infiltrating the narrow band boundary in real time. The signal is frequency-converted and amplified by the low noise amplifier 23, and the modulated signal is extracted by the signal demodulator 24. The extracted signal is amplified by the signal amplifier 25, and then the unnecessary signal is passed through the band pass filter 26. Is removed and converted into a direct current in the full-wave rectification circuit 27, and converted into a digital signal in the voltage comparator 28 and the A / D converter 29, which is controlled by the central operation unit 20-1. The communication is performed through the communication port 21. Therefore, the reception module 20 sends the level control, the power supply state, the error condition, etc. of the A / D converter 29 to the main control module 10, and also sends and receives the adjustment signal.
또한, 송신 모듈(30)은 마이크로 웨이브 발진기(31)에서 K-밴드대의 초고주파를 발진시켜 고주파 증폭기(32)와 아이솔레이터(33)를 거쳐 변조기(34)와 결합되고, 변조신호발생기(35)로부터 보내진 신호와 마이크로 웨이브 신호가 변조되어 패치 어레이 안테나로 이루어진 송신 안테나(36)로 보내진다. 따라서, 송신 안테나(36)에서 방사된 초고주파 변조 신호는 좁은 폭을 유지하면서 수신 안테나(22)로 보내진다.In addition, the transmission module 30 oscillates the K-band ultra-high frequency in the microwave oscillator 31 and is coupled with the modulator 34 via the high frequency amplifier 32 and the isolator 33, and from the modulation signal generator 35 The sent signal and the microwave signal are modulated and sent to a transmit antenna 36 consisting of a patch array antenna. Thus, the ultra-high frequency modulated signal radiated from the transmit antenna 36 is sent to the receive antenna 22 while maintaining a narrow width.
이와 같은 본 발명은 송수신 모듈(30)(20)사이의 주파수 대역이 전자파 영역인 10.525GHz로 제어되고, 이 무선 주파수가 수신 모듈(20)과 송신 모듈(30)사이에서 일정한 감지폭으로 전파통로를 형성하게되며, 주파수 혀용편차(본 발명에서는 3MHz), 스퓨리어스 발사강도(본 발명에서는 50㎼미만), 전계강도(35㎶/m미만), 안테나 이득(본 발명에서는20∼25 20㏈), 변조방식(본 발명에서는 AM 방식), 감지시간(본 발명에서는 10㎳미만), 감지영역(∼300M) 등을 제어하게된다. 따라서, 본 발명은 수신 모듈(20)과 송신 모듈(30)사이의 간격은 10∼300M 정도로 하는 것이 바람직하며, 전자빔 폭(감지 폭)은 수신 모듈(20)과 송신 모듈(30)사이의 간격이 300M 일 경우 0.5∼10M 폭으로 조정 가능하다.In the present invention as described above, the frequency band between the transmission and reception modules 30 and 20 is controlled to 10.525 GHz, which is an electromagnetic wave region, and the radio frequency is a radio wave path with a constant detection width between the reception module 20 and the transmission module 30. Frequency tongue deviation (3 MHz in the present invention), spurious firing intensity (less than 50 Hz in the present invention), field strength (less than 35 Hz / m), antenna gain (20-25 to 20 Hz in the present invention), The modulation method (AM method in the present invention), the sensing time (less than 10 ms in the present invention), the sensing area (˜300M) and the like are controlled. Therefore, in the present invention, the distance between the reception module 20 and the transmission module 30 is preferably about 10 to 300M, and the electron beam width (detection width) is the distance between the reception module 20 and the transmission module 30. In the case of 300M, the width can be adjusted to 0.5 to 10M.
본 발명의 특징은 수신 모듈(20)과 송신 모듈(30) 각각에 내장되는 수신 안테나 및 송신 안테나(22)(36)를 패치 어레이 안테나로 구성함에 있다. 즉, 패치 어레이 안테나(22)(36)은 도 2와 같이 패치 엘레멘트 96개가 PCB 기판(100)상에 배열되어 있고, 각 패치 엘레멘트(A)에 전력급전회로(POWER FEEDING PATTERN)(A')가 연결된 구성으로 이루어진다.A characteristic of the present invention is that the receiving antenna and transmitting antenna 22, 36 embedded in each of the receiving module 20 and the transmitting module 30 are configured as patch array antennas. That is, in the patch array antennas 22 and 36, 96 patch elements are arranged on the PCB substrate 100 as shown in FIG. 2, and a power feeding circuit A 'is applied to each patch element A. FIG. Is made of connected configuration.
이 패치 어레이 안테나는 패치 엘레멘트(A)96개가 한조가 되며, 이것을 연이어서 3개 또는 5개로 확장 가능한 안테나이다. 이 안테나는 마이크로 웨이브 K-밴드에서 초지향성의 방사특성을 가지며, 연이어 제작이 이루어진 구성이어서 방사폭(Beam Width)의 조정이 가능하다.The patch array antenna is a set of 96 patch elements (A), which are successively extended to three or five. The antenna has a super-directional radiation characteristic in the microwave K-band, and is manufactured in succession so that the beam width can be adjusted.
특히, 본 발명에 있어서의 패치 어레이 안테나는 패치 엘레멘트(A)의 크기와 간격을 최적화하고, 각 패치에 공급되는 고주파 전류의 위상을 모두 동상(Same Phase)이 되게 급전 패턴을 급전 포인트(D)에서 등거리가 되게 설계하고, 내측 가로열의 3번 4번열의 패치 엘레멘트(C)에는 가로열의 1번, 2번, 5번, 6번열의 패치 엘레멘트(B)보다 2배의 전력을 공급하여 가로방향으로 중앙부위에서 상대적으로 큰 전력이 방사되게 되고, 지향특성이 우수하게 된다. 또한, 본 발명의 안테나 패턴에서 패턴의 폭이 일정하지 않으면서 분기점에서 폭이 달라지게 구성한 것은 전력의 분배와 임피던스 정합을 위한 것이다.In particular, the patch array antenna according to the present invention optimizes the size and spacing of the patch elements (A), and feeds the power feeding pattern (D) so that the phase of the high frequency current supplied to each patch is in phase. Designed to be equidistant from, the horizontal direction by supplying twice as much power as the patch element (B) of row 1, 2, 5, and 6 As a result, a relatively large amount of power is radiated at the central portion, and the directivity is excellent. In addition, in the antenna pattern of the present invention, the width of the pattern is not constant but the width is changed at the branching point for power distribution and impedance matching.
이상과 같이 본 발명은 우수한 지향특성을 지닌 패치 어레이 안테나를 마이크로 웨이브 전자파(Electro-Magnetic Wave)에 적용하는 것으로, 송신 안테나(36)와 수신 안테나(22)에 공히 동일한 초 지향성의 안테나를 사용하여 전파를 주고 받을 때, 주고 받는 직선상에서 협대역의 전파통로를 만들 수 있게 되는 것이다.As described above, the present invention applies a patch array antenna having excellent directivity to an electromagnetic wave (Electro-Magnetic Wave), by using the same super-directional antenna for both the transmitting antenna 36 and the receiving antenna 22. When transmitting and receiving radio waves, it is possible to create narrow band propagation paths on straight lines.
본 발명은 초고주파 신호를 지향성이 우수한 패치 어레이 안테나를 통하여 전자파를 주고 받을 때 전자파의 통로를 협대역으로 하므로서, 분진 및 기후의 변화 등 환경변화에 영향이 없이 물체의 감지가 이루어져 보안 시스템의 신뢰성을 크게 향상시키는 효과를 가진다.The present invention narrows the path of electromagnetic waves when transmitting and receiving microwaves through a patch array antenna having excellent directivity, so that objects are detected without affecting environmental changes such as dust and climate, thereby improving reliability of the security system. It has the effect of greatly improving.
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| KR860002208B1 (en) * | 1984-08-16 | 1986-12-31 | 양승호 | Intruder detection device using radio waves |
| US5572190A (en) * | 1995-03-22 | 1996-11-05 | Anro Engineering, Inc. | Batteryless sensor used in security applications |
| US6127965A (en) * | 1998-07-23 | 2000-10-03 | Eaton-Vorad Technologies, L.L.C. | Method and apparatus for rejecting rain clutter in a radar system |
| KR20010077177A (en) * | 2000-02-01 | 2001-08-17 | 이동우 | Electromagnetic field intrusion detection device based on phased-array antenna and method therefore |
| US6424259B1 (en) * | 2000-06-27 | 2002-07-23 | Auratek Security Inc. | Intruder/escapee detection system and method using a distributed antenna and an array of discrete antennas |
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