WO2013172498A1 - Object detection sensor using super high frequency signals - Google Patents

Object detection sensor using super high frequency signals Download PDF

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Publication number
WO2013172498A1
WO2013172498A1 PCT/KR2012/003975 KR2012003975W WO2013172498A1 WO 2013172498 A1 WO2013172498 A1 WO 2013172498A1 KR 2012003975 W KR2012003975 W KR 2012003975W WO 2013172498 A1 WO2013172498 A1 WO 2013172498A1
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signal
frequency
ultra
unit
high frequency
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PCT/KR2012/003975
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French (fr)
Korean (ko)
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이재진
김민건
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(주) 텔트론
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Priority to PCT/KR2012/003975 priority Critical patent/WO2013172498A1/en
Publication of WO2013172498A1 publication Critical patent/WO2013172498A1/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/50—Systems of measurement based on relative movement of target
    • G01S13/52—Discriminating between fixed and moving objects or between objects moving at different speeds
    • G01S13/56—Discriminating between fixed and moving objects or between objects moving at different speeds for presence detection

Definitions

  • the present invention relates to an object detection sensor using an ultra-high frequency signal. More particularly, the present invention relates to an object detection sensor, and more particularly, to receive and process a reflected signal returned from an object to obtain an object presence and movement information, and to control a load. An object detection sensor using a signal.
  • an object detection sensor In order to monitor the wide monitoring range, an object detection sensor is known which detects the presence of an object in the monitoring range, the moving speed, the moving direction, etc. by emitting various exploration signals within the monitoring range and receiving a reflected signal from the object. .
  • object detection sensors are applied in various forms in everyday life such as intrusion alarms, automatic doors, urinals for men, auto flashing lights, and object detection behind the car.
  • a detection area can be conveniently defined and an infrared type (Infrared Type) sensor which is inexpensive in terms of price is widely used.
  • the infrared sensor detects a change in the presence or operation of an object in the measurement area by converting a heat change occurring in the measurement area into an electrical signal.
  • the infrared sensor has a disadvantage in that it is difficult to detect an object when the infrared sensor is blocked by a black cloth or the intruder is disguised as a heat shield, and works well in winter but is insensitive to summer, so the variation of sensitivity according to the season is large.
  • it stays near the infrared sensor for a long time, there is no difference in the intensity of the infrared light continuously generated from the heat source, and it is difficult to detect it, and it is difficult to use it because it is impossible to detect transmission in the bathroom or the office where the partition is installed.
  • dust is accumulated on the infrared sensor, the sensitivity is reduced, and when direct sunlight such as sunlight is irradiated, there is a disadvantage in that it malfunctions.
  • Radio frequency (RF) sensors using ultra-high frequency were introduced to realize object detection sensors that operate with constant sensitivity even against changes in the environment such as temperature, dust and sunlight.
  • RF radio frequency
  • the miniaturization and low price of the RF sensor using ultra-high frequency is required.
  • An object of the present invention is to provide an RF sensor having a small size and low manufacturing cost in order to solve the problems of the above-mentioned conventional RF sensor.
  • the power supply unit for converting AC power into DC power;
  • a local signal generator for continuously generating an ultra high frequency signal, an antenna transmitter for radiating the ultra high frequency signal generated by the local signal generator, and a reflected signal returned by reflecting the microwave signal emitted from the antenna transmitter to an object
  • a sensor unit including a receiving antenna receiving unit and a frequency mixing unit for mixing the ultra-high frequency signal generated by the local signal generating unit with the reflected signal received through the antenna receiving unit and converting the converted signal into an intermediate frequency signal;
  • a signal processor configured to process the intermediate frequency signal converted by the frequency mixer to control the load by acquiring the existence and movement information of the object, and the power supply unit includes a rectifier for rectifying the AC input power to DC power.
  • An AC-DC converter including a Zener diode (D1) and a capacitor (C2) connected in parallel to the output terminal of the rectifier.
  • the local signal generation unit the oscillator for generating a reference frequency signal;
  • a division module for dividing the ultra-high frequency signal;
  • a phase / frequency detector for detecting a phase and frequency difference between the reference frequency signal and the frequency signal divided from the ultra-high frequency;
  • a charge pump for charging or pumping a charge amount according to an output signal of the phase / frequency detector;
  • a loop filter for filtering low frequency components by adjusting an amount of current supplied based on an output signal of the charge pump; And a voltage controlled oscillator oscillating in response to the output signal of the loop filter to generate the ultra-high frequency signal.
  • the frequency division module may include a frequency divider or a true single phase clock of a current mode logic (CML) flip-flop structure according to a high speed mode or a low speed mode.
  • CML current mode logic
  • Single Phase Clock A frequency divider with a flip-flop structure can be used.
  • the sensor unit may further include an intermediate frequency output unit for filtering a signal corresponding to a frequency band other than the intermediate frequency from the intermediate frequency signal output from the frequency mixer and transferring the signal to the signal processor.
  • the local signal generator, the frequency mixer, and the intermediate frequency output unit may be implemented as a single IC chip.
  • the size and low manufacturing cost it can be introduced in a general environment as well as a special environment, there is an effect that can produce a RF sensor with a high market competitiveness.
  • FIG. 2 is a diagram specifically illustrating a configuration of the power supply unit illustrated in FIG. 1.
  • FIG. 4 is a diagram for describing a process of controlling a load by the signal processor illustrated in FIG. 1.
  • FIG. 5 is a diagram illustrating a semiconductor chip in which an object detection sensor according to the present invention is implemented.
  • FIG. 1 is a block diagram showing the configuration of an object detection sensor using an ultra-high frequency signal according to the present invention.
  • the object detection sensor 10 includes a power supply unit 200 for applying operating power to each of the sensor unit 300 and the signal processing unit 400, and radiates an ultra-high frequency signal to the outside.
  • the sensor unit 300 for receiving the reflected signal reflected by the high frequency signal is reflected back to the object and outputs an intermediate frequency signal, by receiving the signal output from the sensor unit 300 and by interaction with the embedded software
  • the signal processing unit 400 controls the load by processing the signal and determining the presence and movement of the object based on the result.
  • the sensor unit 300 includes a local signal generator 320 for continuously generating an ultra-high frequency signal, an antenna transmitter 340a for radiating an ultra-high frequency signal generated by the local signal generator 320 to the outside, Received through the antenna receiver 340b and the antenna signal generated by the local signal generator 320 and the antenna receiver 340b for receiving the reflected signal reflected by the microwave signal radiated from the antenna transmitter 340a and returned to the object
  • a signal processor for filtering a signal corresponding to a frequency band other than the intermediate frequency from the frequency mixer 360 for mixing the reflected signals and converting the converted signal into an intermediate frequency signal, and the intermediate frequency signal output from the frequency mixer 360. It is composed of an intermediate frequency output unit 380 to transmit to 400.
  • the antenna transmitter 340a and the antenna receiver 340b may be implemented by separate or one antenna.
  • the sensor unit 300 is output from the first amplifier (not shown) and the intermediate frequency output unit 380 for amplifying the reflected signal output from the antenna receiver 340b and transferring it to the frequency mixer 360.
  • a second amplifier (not shown) may be further included to amplify the intermediate frequency signal and transmit the amplified intermediate signal to the antenna transmitter 340a.
  • the local signal generator 320, the frequency mixer 360, and the intermediate frequency output unit 380 except for the antenna transmitter 340a and the antenna receiver 340b are single.
  • the RF sensor can be miniaturized.
  • FIG. 2 is a diagram illustrating the configuration of the power supply unit 200 shown in FIG. 1 in more detail.
  • RF sensors use a power supply using a transformer or a switching mode power supply to supply power for object detection and signal processing.
  • a power supply using a transformer the size of the transformer itself is large, and in the case of a switching mode power supply, the inductor, MOSFET, and controller constituting it are not only large but also have a switching frequency of 100 kHz. Due to the low frequency, the LC filter for EMC is also large in size and bulky and expensive, so there is a problem in that the RF sensor can not be miniaturized and low in price.
  • the ultra-high frequency sensor module 10 is a power supply unit 200 for inducing miniaturization and low cost of the RF sensor, as shown in Figure 2 using an AC-DC converter using a capacitor without a transformer use.
  • the power supply unit 200 of the microwave sensor module 10 according to the present invention includes a rectifier 220 rectifying AC input power to a DC power supply and a zener diode connected in parallel to an output terminal of the rectifier 220. (D1) and capacitor (C2). At this time, the magnitude of the maximum supply current I in is determined by the capacitor C1 according to Equation 1 below.
  • the power supply unit 200 Since the power supply unit 200 must apply a DC type operating power to each of the sensor unit 300 and the signal processing unit 400, a rectifier 220 for converting AC power to DC power is required, and the amount of current required As a result, a rectifier wave or a half wave rectifier may be used. In this case, the rectified wave rectifier doubles the maximum supply current as compared to the half-wave rectifier.
  • the magnitude of the output DC voltage is determined by the zener diode D1, and the capacitor C1 is a bypass capacitor for minimizing ripple of the output DC voltage.
  • the resistor R1 is configured to limit the excessive inrush current generated to charge the capacitor C1 when the input AC power is applied to prevent the occurrence of the transient current.
  • FIG. 3 is a diagram illustrating the configuration of the local signal generator 320 shown in FIG. 1 in more detail.
  • a local signal generator 320 employing a phase locked loop (PLL) method is used as a configuration for continuously generating an ultrahigh frequency signal.
  • PLL phase locked loop
  • the local signal generator 320 detects a vibrator 321 generating a reference frequency signal and a reference frequency signal generated from the vibrator 321, and detects the reference frequency signal and the division module 327.
  • a phase / frequency detector 322 for detecting a phase and frequency difference between the frequency signals divided from the ultra-high frequency signal by the N-counter 328, and for charging or pumping the amount of charge according to the output signal of the phase / frequency detector.
  • a charge filter 323, a loop filter 324 for filtering low frequency components by adjusting an amount of current supplied based on an output signal of the charge pump 323, and an output signal of the loop filter 324.
  • a frequency divider module 327 for dividing the frequency of the ultra-high frequency signal generated by the oscillator 325 and a frequency of the signal divided by the frequency divider module 327 are further divided and output to the phase / frequency detector 322.
  • the divider module 327 although not shown in FIG. 3, has a high frequency divider with a current mode logic (CML) flip-flop structure that operates at high speed at low power consumption. It consists of a frequency divider in a true single phase clock (True Single Phase Clock) flip-flop structure that operates at low speed at power consumption.
  • the frequency division module 327 uses the frequency divider of the current mode logic flip-flop structure for the high speed operation according to the high speed operation mode input from the outside of the ultra high frequency signal generated by the voltage controlled oscillator 325. Frequency division and frequency division of the ultra-high frequency signal generated by the voltage controlled oscillator 325 using a frequency divider of a true single phase clock flip-flop structure to reduce power consumption according to a low speed operation mode input from the outside. can do.
  • the 10.36MHz reference frequency signal generated by the vibrator 321 is detected by the phase / frequency detector 322 and amplified by the charge pump 323, loop After the low frequency component is filtered by the filter 324, the voltage controlled oscillator 325 generates and outputs an ultrahigh frequency signal of 10.525 GHz.
  • the frequency dividing module 327 divides the frequency of the ultra-high frequency signal output through the voltage controlled oscillator 325 into 1 / 8th.
  • FIG. 4 is a diagram for describing a process of controlling a load by the signal processor 400 shown in FIG. 1. In FIG. 4, only some main components are shown for components other than the signal processor 400 for convenience of description.
  • the object detection sensor according to the present invention can be implemented as a semiconductor chip as shown in FIG.

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  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

The present invention relates to an object detection sensor using super high frequency signals, wherein a reflection signal for a super high frequency signal which returns after reflecting off an object is received and processed in order to obtain information on the existence and motion of the object and to control a load.

Description

초고주파 신호를 이용한 물체 검출 센서Object Detection Sensor Using Microwave Signal
본 발명은 초고주파 신호를 이용한 물체 검출 센서에 관한 것으로, 더욱 상세하게는, 초고주파 신호가 대상물에 반사되어 되돌아온 반사 신호를 수신 및 처리하여 대상물의 존재 여부 및 움직임 정보를 획득하고 부하를 제어하기 위한 초고주파 신호를 이용한 물체 검출 센서에 관한 것이다.The present invention relates to an object detection sensor using an ultra-high frequency signal. More particularly, the present invention relates to an object detection sensor, and more particularly, to receive and process a reflected signal returned from an object to obtain an object presence and movement information, and to control a load. An object detection sensor using a signal.
광역의 감시 범위를 감시하기 위하여, 각종 탐사 신호를 감시 범위 내에 방사하고, 대상물로부터의 반사 신호를 수신함으로써 감시 범위에서의 물체의 존재, 이동 속도, 이동 방향 등을 검출하는 물체 감지 센서가 알려져 있다. 이러한 물체 감지 센서는 침입 경보기, 자동문, 남성용 소변기, 자동 점멸 조명, 자동차 후방 물체 감지 등 일상 생활에서 여러가지 형태로 적용되어 사용되고 있다.In order to monitor the wide monitoring range, an object detection sensor is known which detects the presence of an object in the monitoring range, the moving speed, the moving direction, etc. by emitting various exploration signals within the monitoring range and receiving a reflected signal from the object. . Such object detection sensors are applied in various forms in everyday life such as intrusion alarms, automatic doors, urinals for men, auto flashing lights, and object detection behind the car.
종래 물체 감지 센서로는 감지 영역을 편리하게 정의할 수 있고 가격 면에서도 저렴한 적외선 방식(Infrared Type)의 센서가 널리 사용되고 있다. 적외선 방식의 감지 센서는 측정 영역 내에 발생하는 열 변화를 전기 신호로 변화시킴으로써 측정 영역 내의 대상물의 존재 또는 동작의 변화를 감지한다. In the conventional object detection sensor, a detection area can be conveniently defined and an infrared type (Infrared Type) sensor which is inexpensive in terms of price is widely used. The infrared sensor detects a change in the presence or operation of an object in the measurement area by converting a heat change occurring in the measurement area into an electrical signal.
그러나, 적외선 센서는 검은 천으로 가려 적외선을 차단하거나 침입자가 열 차단체로 위장하는 경우에는 물체를 감지하기 어렵고, 겨울에는 잘 작동하나 여름에는 둔감하여 계절에 따른 감도의 편차가 크다는 단점이 있었다. 또한, 적외선 센서 근처에 오래 머무르면 열원에서 지속적으로 발생하는 적외선의 세기에 차이가 없어 이를 감지하기 어려울 뿐만 아니라, 칸막이가 설치된 화장실이나 사무실에서는 투과 감지가 불가능하여 사용하기 어려웠다. 또한, 적외선 센서에 먼지가 쌓이면 감도가 떨어지고, 햇빛과 같은 직사광선이 조사되면 오작동되는 단점이 있다.However, the infrared sensor has a disadvantage in that it is difficult to detect an object when the infrared sensor is blocked by a black cloth or the intruder is disguised as a heat shield, and works well in winter but is insensitive to summer, so the variation of sensitivity according to the season is large. In addition, if it stays near the infrared sensor for a long time, there is no difference in the intensity of the infrared light continuously generated from the heat source, and it is difficult to detect it, and it is difficult to use it because it is impossible to detect transmission in the bathroom or the office where the partition is installed. In addition, when dust is accumulated on the infrared sensor, the sensitivity is reduced, and when direct sunlight such as sunlight is irradiated, there is a disadvantage in that it malfunctions.
이에 대하여, 열 차단제를 쉽게 투과하여 특정한 장애물에 영향을 받지 않고. 기온, 먼지, 햇빛 등의 주위 환경의 변화에 대해서도 일정한 감도 성능으로 작동하는 물체 감지 센서를 구현하기 위해 초고주파를 이용한 RF(Radio Frequency) 센서가 도입되었다. 그러나, 종래 초고주파를 이용한 RF 센서는 적외선 센서에 비해 매우 고가이므로, 일반적인 환경에서의 사용이 제한되었고 특수한 환경에서만 사용되어 왔다. In this regard, it easily penetrates the heat shield and is not affected by certain obstacles. Radio frequency (RF) sensors using ultra-high frequency were introduced to realize object detection sensors that operate with constant sensitivity even against changes in the environment such as temperature, dust and sunlight. However, since the conventional RF sensor using a very high frequency is very expensive compared to the infrared sensor, its use in a general environment is limited and has been used only in a special environment.
따라서, 특수한 환경뿐만 아니라 일반적인 환경에서도 RF 센서를 폭넓게 사용할 수 있기 위해서는 초고주파를 이용한 RF 센서의 소형화 및 저가격화가 요구되는 실정이다.Therefore, in order to be able to use the RF sensor widely in a general environment as well as a special environment, the miniaturization and low price of the RF sensor using ultra-high frequency is required.
본 발명은 상기 언급한 종래 RF 센서의 문제점을 해결하기 위하여 크기가 작고, 제조비용이 저렴한 RF 센서를 제공하는 것을 목적으로 한다.An object of the present invention is to provide an RF sensor having a small size and low manufacturing cost in order to solve the problems of the above-mentioned conventional RF sensor.
또한, 대상물의 존재 여부 및 움직임에 대한 안정적인 검출로 측정의 신뢰성을 높일 수 있는 RF 센서를 제공하는 것을 목적으로 한다.In addition, it is an object of the present invention to provide an RF sensor that can increase the reliability of the measurement by the stable detection of the presence and movement of the object.
상기한 목적을 달성하기 위한 본 발명에 따른 초고주파 신호를 이용한 물체 검출 센서는, 교류 전원을 직류 전원으로 변환하는 전원부; 초고주파 신호를 연속적으로 생성하는 국부신호 발생부와, 상기 국부신호 발생부에 의해 생성된 초고주파 신호를 외부로 방사하는 안테나 송신부와, 상기 안테나 송신부로부터 방사된 초고주파 신호가 대상물에 반사되어 되돌아온 반사 신호를 수신하는 안테나 수신부와, 상기 국부신호 발생부에 의해 생성된 초고주파 신호와 상기 안테나 수신부를 통해 수신된 반사 신호를 혼합하여 중간주파수 신호로 변환하는 주파수 혼합부를 포함하는 센서부; 및 상기 주파수 혼합부에 의해 변환된 중간주파수 신호를 처리하여 대상물의 존재 여부 및 움직임 정보를 획득하여 부하를 제어하는 신호 처리부를 포함하고, 상기 전원부는 AC 입력 전원을 DC 전원으로 정류하는 정류기와 상기 정류기의 출력단에 병렬로 연결된 제너 다이오드(D1) 및 캐패시터(C2)를 포함하는 AC-DC 컨버터로 구성되는 것을 특징으로 한다.Object detection sensor using the ultra-high frequency signal according to the present invention for achieving the above object, the power supply unit for converting AC power into DC power; A local signal generator for continuously generating an ultra high frequency signal, an antenna transmitter for radiating the ultra high frequency signal generated by the local signal generator, and a reflected signal returned by reflecting the microwave signal emitted from the antenna transmitter to an object A sensor unit including a receiving antenna receiving unit and a frequency mixing unit for mixing the ultra-high frequency signal generated by the local signal generating unit with the reflected signal received through the antenna receiving unit and converting the converted signal into an intermediate frequency signal; And a signal processor configured to process the intermediate frequency signal converted by the frequency mixer to control the load by acquiring the existence and movement information of the object, and the power supply unit includes a rectifier for rectifying the AC input power to DC power. An AC-DC converter including a Zener diode (D1) and a capacitor (C2) connected in parallel to the output terminal of the rectifier.
이때, 상기 국부신호 발생부는, 기준 주파수 신호를 생성하는 진동자; 상기 초고주파 신호를 분주하는 분주 모듈; 상기 기준 주파수 신호와 상기 초고주파로부터 분주된 주파수 신호 간의 위상 및 주파수 차이를 검출하는 위상/주파수 검출기; 상기 위상/주파수 검출기의 출력 신호에 따른 전하량을 차징 또는 펌핑하는 차지 펌프; 상기 전하 펌프의 출력 신호에 기초하여 공급되는 전류의 양을 조절하여 저역 주파수 성분을 필터링 하는 루프 필터; 및 상기 루프 필터의 출력 신호에 응답하여 발진하여 상기 초고주파 신호를 생성하는 전압제어 발진기를 포함할 수 있다.In this case, the local signal generation unit, the oscillator for generating a reference frequency signal; A division module for dividing the ultra-high frequency signal; A phase / frequency detector for detecting a phase and frequency difference between the reference frequency signal and the frequency signal divided from the ultra-high frequency; A charge pump for charging or pumping a charge amount according to an output signal of the phase / frequency detector; A loop filter for filtering low frequency components by adjusting an amount of current supplied based on an output signal of the charge pump; And a voltage controlled oscillator oscillating in response to the output signal of the loop filter to generate the ultra-high frequency signal.
이때, 상기 분주 모듈은 고속 동작 모드 또는 저속 동작 모드에 따라 전류 모드 로직(Current Mode Logic: CML) 플립-플롭(Flip-flop) 구조의 주파수 분주기 또는 트루 싱글 페이즈 클럭(True Single Phase Clock: True Single Phase Clock) 플립-플롭 구조의 주파수 분주기를 이용할 수 있다.In this case, the frequency division module may include a frequency divider or a true single phase clock of a current mode logic (CML) flip-flop structure according to a high speed mode or a low speed mode. Single Phase Clock) A frequency divider with a flip-flop structure can be used.
이때, 상기 센서부는, 상기 주파수 혼합부로부터 출력되는 중간주파수 신호에서 중간주파수 이외의 주파수 대역에 해당하는 신호를 필터링하여 상기 신호 처리부로 전달하는 중간주파수 출력부를 더 포함할 수 있다.In this case, the sensor unit may further include an intermediate frequency output unit for filtering a signal corresponding to a frequency band other than the intermediate frequency from the intermediate frequency signal output from the frequency mixer and transferring the signal to the signal processor.
이때, 상기 센서부의 국부신호 발생부, 주파수 혼합부 및 중간주파수 출력부는 단일의 IC 칩으로 구현될 수 있다.In this case, the local signal generator, the frequency mixer, and the intermediate frequency output unit may be implemented as a single IC chip.
본 발명에 따르면, 크기가 작고 제조비용이 저렴하여, 특수한 환경뿐만 아니라 일반적인 환경에서도 도입될 수 있고 시장 경쟁력을 높은 RF 센서를 제조할 수 있는 효과가 있다.According to the present invention, the size and low manufacturing cost, it can be introduced in a general environment as well as a special environment, there is an effect that can produce a RF sensor with a high market competitiveness.
도 1은 본 발명에 따른 초고주파 신호를 이용한 물체 검출 센서의 구성을 나타내는 블록도이다.1 is a block diagram showing the configuration of an object detection sensor using an ultra-high frequency signal according to the present invention.
도 2는 도 1에 도시된 전원부의 구성을 구체적으로 나타내는 도면이다.FIG. 2 is a diagram specifically illustrating a configuration of the power supply unit illustrated in FIG. 1.
도 3은 도 1에 도시된 국부신호 발생부의 구성을 구체적으로 나타내는 도면이다.3 is a diagram illustrating in detail the configuration of the local signal generator illustrated in FIG. 1.
도 4는 도 1에 도시된 신호 처리부에 의해 부하가 제어되는 과정을 설명하기 위한 도면이다.4 is a diagram for describing a process of controlling a load by the signal processor illustrated in FIG. 1.
도 5는 본 발명에 따른 물체 검출 센서가 구현되는 반도체 칩을 나타내는 도면이다.5 is a diagram illustrating a semiconductor chip in which an object detection sensor according to the present invention is implemented.
본 발명을 첨부된 도면을 참조하여 상세히 설명하면 다음과 같다. 여기서, 반복되는 설명, 본 발명의 요지를 불필요하게 흐릴 수 있는 공지 기능, 및 구성에 대한 상세한 설명은 생략한다. 본 발명의 실시형태는 당 업계에서 평균적인 지식을 가진 자에게 본 발명을 보다 완전하게 설명하기 위해서 제공되는 것이다. 따라서, 도면에서의 요소들의 형상 및 크기 등은 보다 명확한 설명을 위해 과장될 수 있다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. Here, the repeated description, well-known functions and configurations that may unnecessarily obscure the subject matter of the present invention, and detailed description of the configuration will be omitted. Embodiments of the present invention are provided to more completely describe the present invention to those skilled in the art. Accordingly, the shape and size of elements in the drawings may be exaggerated for clarity.
이하에서는 본 발명에 따른 초고주파 신호를 이용한 물체 검출 센서의 구성 및 그 동작에 대하여 설명하도록 한다.Hereinafter, the configuration and operation of the object detection sensor using the ultra-high frequency signal according to the present invention will be described.
도 1은 본 발명에 따른 초고주파 신호를 이용한 물체 검출 센서의 구성을 나타내는 블록도이다.1 is a block diagram showing the configuration of an object detection sensor using an ultra-high frequency signal according to the present invention.
도 1을 참조하면, 본 발명에 따른 물체 검출 센서(10)는, 센서부(300)와 신호 처리부(400) 각각에 동작전원을 인가하기 위한 전원부(200)와, 초고주파 신호를 외부로 방사하는 한편, 초고주파 신호가 대상물에 반사되어 되돌아온 반사 신호를 수신하여 중간주파수 신호를 출력하는 센서부(300)와, 상기 센서부(300)부터 출력되는 신호를 수신하고 내장된 소프트웨어와의 상호작용에 의해 상기 신호를 처리하여 그 결과를 토대로 대상물의 존재 여부 및 움직임을 판별하여 부하를 제어하는 신호 처리부(400)로 구성된다.Referring to FIG. 1, the object detection sensor 10 according to the present invention includes a power supply unit 200 for applying operating power to each of the sensor unit 300 and the signal processing unit 400, and radiates an ultra-high frequency signal to the outside. On the other hand, the sensor unit 300 for receiving the reflected signal reflected by the high frequency signal is reflected back to the object and outputs an intermediate frequency signal, by receiving the signal output from the sensor unit 300 and by interaction with the embedded software The signal processing unit 400 controls the load by processing the signal and determining the presence and movement of the object based on the result.
한편, 센서부(300)는 초고주파 신호를 연속적으로 생성하는 국부신호 발생부(320)와, 상기 국부신호 발생부(320)에 의해 생성된 초고주파 신호를 외부로 방사하는 안테나 송신부(340a)와, 안테나 송신부(340a)로부터 방사된 초고주파 신호가 대상물에 반사되어 되돌아온 반사 신호를 수신하는 안테나 수신부(340b)와, 국부신호 발생부(320)에 의해 생성된 초고주파 신호와 안테나 수신부(340b)를 통해 수신된 반사 신호를 혼합하여 중간주파수 신호로 변환하는 주파수 혼합부(360)와, 상기 주파수 혼합부(360)로부터 출력되는 중간주파수 신호에서 중간주파수 이외의 주파수 대역에 해당하는 신호를 필터링하여 신호 처리부(400)로 전달하는 중간주파수 출력부(380)로 구성된다. 이때, 안테나 송신부(340a)와 안테나 수신부(340b)는 별도 또는 하나의 안테나에 의해 구현될 수 있다. 한편, 센서부(300)는 안테나 수신부(340b)로부터 출력되는 반사 신호를 증폭하여 주파수 혼합부(360)로 전달하기 위한 제1 증폭기(미도시)와, 중간주파수 출력부(380)로부터 출력되는 중간주파수 신호를 증폭하여 안테나 송신부(340a)로 전달하기 위한 제2 증폭기(미도시)를 더 포함할 수 있다. 이때, 본 발명에 따른 초고주파 센서 모듈(10)에서 안테나 송신부(340a)와 안테나 수신부(340b)를 제외한 국부신호 발생부(320), 주파수 혼합부(360) 및 중간주파수 출력부(380)를 단일의 IC 칩으로 구현함으로써, RF 센서의 소형화를 도모할 수 있다.On the other hand, the sensor unit 300 includes a local signal generator 320 for continuously generating an ultra-high frequency signal, an antenna transmitter 340a for radiating an ultra-high frequency signal generated by the local signal generator 320 to the outside, Received through the antenna receiver 340b and the antenna signal generated by the local signal generator 320 and the antenna receiver 340b for receiving the reflected signal reflected by the microwave signal radiated from the antenna transmitter 340a and returned to the object A signal processor for filtering a signal corresponding to a frequency band other than the intermediate frequency from the frequency mixer 360 for mixing the reflected signals and converting the converted signal into an intermediate frequency signal, and the intermediate frequency signal output from the frequency mixer 360. It is composed of an intermediate frequency output unit 380 to transmit to 400. In this case, the antenna transmitter 340a and the antenna receiver 340b may be implemented by separate or one antenna. On the other hand, the sensor unit 300 is output from the first amplifier (not shown) and the intermediate frequency output unit 380 for amplifying the reflected signal output from the antenna receiver 340b and transferring it to the frequency mixer 360. A second amplifier (not shown) may be further included to amplify the intermediate frequency signal and transmit the amplified intermediate signal to the antenna transmitter 340a. At this time, in the ultra-high frequency sensor module 10 according to the present invention, the local signal generator 320, the frequency mixer 360, and the intermediate frequency output unit 380 except for the antenna transmitter 340a and the antenna receiver 340b are single. By implementing the IC chip, the RF sensor can be miniaturized.
도 2는 도 1에 도시된 전원부(200)의 구성을 보다 구체적으로 나타내는 도면이다. FIG. 2 is a diagram illustrating the configuration of the power supply unit 200 shown in FIG. 1 in more detail.
종래 RF 센서는 물체 검출 및 신호 처리를 위한 전원을 공급하기 위해 변압기(Transformer)를 이용한 전원 장치나 스위칭 모드 전원 장치(Switching Mode Power Supply)를 사용하고 있다. 그러나, 변압기를 이용한 전원 장치의 경우에는 변압기 자체의 부피가 크고, 스위칭 모드 전원 장치의 경우에는 이를 구성하는 인덕터, 모스펫(MOSFET), 컨트롤러(Controller)의 크기가 클 뿐만 아니라 스위칭 주파수가 100kHz로 비교적 낮은 주파수에 해당하여 이에 대한 EMC용 LC 필터의 크기 또한 크기 때문에 전체적으로 부피가 크며 가격이 고가이므로, RF 센서의 소형화 및 저가격화를 도모할 수 없다는 문제가 있었다.Conventional RF sensors use a power supply using a transformer or a switching mode power supply to supply power for object detection and signal processing. However, in the case of a power supply using a transformer, the size of the transformer itself is large, and in the case of a switching mode power supply, the inductor, MOSFET, and controller constituting it are not only large but also have a switching frequency of 100 kHz. Due to the low frequency, the LC filter for EMC is also large in size and bulky and expensive, so there is a problem in that the RF sensor can not be miniaturized and low in price.
이에 대하여, 본 발명에 따른 초고주파 센서 모듈(10)은 RF 센서의 소형화 및 저가격화를 유도하기 위한 전원부(200)로써, 도 2에 도시된 바와 같이 변압기가 필요없는 커패시터를 이용한 AC-DC 컨버터를 사용한다. 본 발명에 따른 초고주파 센서 모듈(10)의 전원부(200)는, 도 2를 참조하면, AC 입력 전원을 DC 전원으로 정류하는 정류기(220)와 상기 정류기(220)의 출력단에 병렬로 연결된 제너 다이오드(D1) 및 커패시터(C2)를 포함한다. 이때, 커패시터(C1)에 의해 하기의 수학식 1에 따라 최대 공급 전류(Iin)의 크기가 정해진다.On the other hand, the ultra-high frequency sensor module 10 according to the present invention is a power supply unit 200 for inducing miniaturization and low cost of the RF sensor, as shown in Figure 2 using an AC-DC converter using a capacitor without a transformer use. Referring to FIG. 2, the power supply unit 200 of the microwave sensor module 10 according to the present invention includes a rectifier 220 rectifying AC input power to a DC power supply and a zener diode connected in parallel to an output terminal of the rectifier 220. (D1) and capacitor (C2). At this time, the magnitude of the maximum supply current I in is determined by the capacitor C1 according to Equation 1 below.
수학식 1
Figure PCTKR2012003975-appb-M000001
 Equation 1
Figure PCTKR2012003975-appb-M000001
전원부(200)는 센서부(300)와 신호 처리부(400) 각각에 DC 형태의 동작 전원을 인가하여야 하므로, AC 전원을 DC 전원으로 변환하는 정류기(220)가 반드시 필요하며, 필요한 전류의 양에 따라 정파 정류기 또는 반파 정류기를 사용할 수 있다. 이때, 정파 정류기는 반파 정류기에 비하여 최대 공급 전류가 2배가 된다. 출력 DC전압의 크기는 제너 다이오드(D1)에 의해 결정되며, 커패시터(C1)는 출력 DC전압의 리플(Ripple)을 최소화시키기 위한 바이패스(Bypass) 용 커패시터이다. 저항(R1)은 입력 AC 전원이 인가되었을 때, 커패시터(C1)을 충전하기 위해 생기는 과도한 돌입전류(Inrush current)를 제한하여 과도 전류의 발생을 방지하기 위한 구성이다.Since the power supply unit 200 must apply a DC type operating power to each of the sensor unit 300 and the signal processing unit 400, a rectifier 220 for converting AC power to DC power is required, and the amount of current required As a result, a rectifier wave or a half wave rectifier may be used. In this case, the rectified wave rectifier doubles the maximum supply current as compared to the half-wave rectifier. The magnitude of the output DC voltage is determined by the zener diode D1, and the capacitor C1 is a bypass capacitor for minimizing ripple of the output DC voltage. The resistor R1 is configured to limit the excessive inrush current generated to charge the capacitor C1 when the input AC power is applied to prevent the occurrence of the transient current.
도 3은 도 1에 도시된 국부신호 발생부(320)의 구성을 보다 구체적으로 나타내는 도면이다. 3 is a diagram illustrating the configuration of the local signal generator 320 shown in FIG. 1 in more detail.
본 발명에 따른 물체 검출 센서(10)는 초고주파 신호를 연속적으로 생성하기 위한 구성으로 위상 제어 루프(Phase Locked Loop: PLL) 방식을 채용한 국부신호 발생부(320)가 사용된다.In the object detection sensor 10 according to the present invention, a local signal generator 320 employing a phase locked loop (PLL) method is used as a configuration for continuously generating an ultrahigh frequency signal.
도 3을 참조하면, 국부신호 발생부(320)는, 기준 주파수 신호를 생성하는 진동자(321)와, 상기 진동자(321)로부터 발생된 기준 주파수 신호를 검지하고 상기 기준 주파수 신호와 분주 모듈(327) 및 N-카운터(328)에 의해 초고주파 신호로부터 분주된 주파수 신호 간의 위상 및 주파수 차이를 검출하는 위상/주파수 검출기(322)와, 상기 위상/주파수 검출기의 출력 신호에 따른 전하량을 차징 또는 펌핑하는 차지 펌프(323)와, 상기 차지 펌프(323)의 출력 신호에 기초하여 공급되는 전류의 양을 조절하여 저역 주파수 성분을 필터링 하는 루프 필터(324)와, 상기 루프 필터(324)의 출력 신호에 응답하여 발진하여 초고주파 신호를 생성하는 전압제어 발진기(325)와, 상기 전압제어 발진기(325)에 의해 생성된 초고주파 신호를 안테나 송신부(340a)로 전달하는 버퍼(326)와, 전압제어 발진기(325)에 의해 생성된 초고주파 신호의 주파수를 분주하는 분주 모듈(327)와, 상기 분주 모듈(327)에 의해 분주된 신호의 주파수를 다시 분주하여 위상/주파수 검출기(322)로 출력하는 N-카운터(328)를 포함한다.Referring to FIG. 3, the local signal generator 320 detects a vibrator 321 generating a reference frequency signal and a reference frequency signal generated from the vibrator 321, and detects the reference frequency signal and the division module 327. And a phase / frequency detector 322 for detecting a phase and frequency difference between the frequency signals divided from the ultra-high frequency signal by the N-counter 328, and for charging or pumping the amount of charge according to the output signal of the phase / frequency detector. A charge filter 323, a loop filter 324 for filtering low frequency components by adjusting an amount of current supplied based on an output signal of the charge pump 323, and an output signal of the loop filter 324. A voltage controlled oscillator 325 for oscillating in response to generate an ultra high frequency signal, a buffer 326 for transmitting an ultra high frequency signal generated by the voltage controlled oscillator 325 to the antenna transmitter 340a, and a voltage generator A frequency divider module 327 for dividing the frequency of the ultra-high frequency signal generated by the oscillator 325 and a frequency of the signal divided by the frequency divider module 327 are further divided and output to the phase / frequency detector 322. An N-counter 328.
분주 모듈(327)는, 비록 도 3에는 도시되지 아니하였으나, 낮은 소비 전력에서 고속으로 동작하는 전류 모드 로직(Current Mode Logic: CML) 플립-플롭(Flip-flop) 구조의 주파수 분주기와, 높은 소비 전력에서 저속으로 동작하는 트루 싱글 페이즈 클럭(True Single Phase Clock: True Single Phase Clock) 플립-플롭 구조의 주파수 분주기로 구성된다. 이때, 상기 분주 모듈(327)는, 외부로부터 입력되는 고속 동작 모드에 따라 고속 동작을 위해 전류 모드 로직 플립-플롭 구조의 주파수 분주기를 이용하여 전압제어 발진기(325)에 의해 생성된 초고주파 신호의 주파수를 분주하고, 외부로부터 입력되는 저속 동작 모드에 따라 전력 소모를 줄이기 위해 트루 싱글 페이즈 클럭 플립-플롭 구조의 주파수 분주기를 이용하여 전압제어 발진기(325)에 의해 생성된 초고주파 신호의 주파수를 분주할 수 있다.The divider module 327, although not shown in FIG. 3, has a high frequency divider with a current mode logic (CML) flip-flop structure that operates at high speed at low power consumption. It consists of a frequency divider in a true single phase clock (True Single Phase Clock) flip-flop structure that operates at low speed at power consumption. In this case, the frequency division module 327 uses the frequency divider of the current mode logic flip-flop structure for the high speed operation according to the high speed operation mode input from the outside of the ultra high frequency signal generated by the voltage controlled oscillator 325. Frequency division and frequency division of the ultra-high frequency signal generated by the voltage controlled oscillator 325 using a frequency divider of a true single phase clock flip-flop structure to reduce power consumption according to a low speed operation mode input from the outside. can do.
국부신호 발생부(320)의 예시적인 동작 과정을 살펴보면, 진동자(321)에서 발생한 10.36MHz의 기준 주파수 신호는 위상/주파수 검출기(322)에 의해 검지되어 차지 펌프(323)에 의해 증폭되며, 루프 필터(324)에 의해 저역 주파수 성분이 필터링된 후, 전압제어 발진기(325)를 통해 10.525GHz의 초고주파 신호로 생성되어 출력된다. 이때, 10.525GHz의 정확한 주파수를 갖는 초고주파 신호를 출력하기 위한 피드백 신호를 제공하기 위해, 분주 모듈(327)이 전압제어 발진기(325)를 통해 출력되는 초고주파 신호의 주파수에 대하여 1/8로 분주하여 1.315GHz의 주파수를 갖는 신호를 생성하고, N-카운터(328)가 상기 신호의 주파수를 재분주하여 생성한 10.36MHz의 주파수를 갖는 피드백 신호를 위상/주파수 검출기(322)로 출력함으로써 상기 위상/주파수 검출기(322)가 10.36MHz의 주파수를 갖는 신호를 선택하도록 한다.Looking at an exemplary operation of the local signal generator 320, the 10.36MHz reference frequency signal generated by the vibrator 321 is detected by the phase / frequency detector 322 and amplified by the charge pump 323, loop After the low frequency component is filtered by the filter 324, the voltage controlled oscillator 325 generates and outputs an ultrahigh frequency signal of 10.525 GHz. At this time, in order to provide a feedback signal for outputting an ultra-high frequency signal having an accurate frequency of 10.525 GHz, the frequency dividing module 327 divides the frequency of the ultra-high frequency signal output through the voltage controlled oscillator 325 into 1 / 8th. Generating a signal having a frequency of 1.315 GHz and outputting a feedback signal having a frequency of 10.36 MHz, generated by N-counter 328 by re-dividing the frequency of the signal, to phase / frequency detector 322 Let the frequency detector 322 select a signal with a frequency of 10.36 MHz.
도 4는 도 1에 도시된 신호 처리부(400)에 의해 부하가 제어되는 과정을 설명하기 위한 도면이다. 도 4에서는 설명의 편의를 위해 신호 처리부(400) 이외의 구성에 대하여는 일부 주요 구성만이 도시되었다.4 is a diagram for describing a process of controlling a load by the signal processor 400 shown in FIG. 1. In FIG. 4, only some main components are shown for components other than the signal processor 400 for convenience of description.
도 4를 참조하면, 센서부(300)의 혼합기(360)에서 출력되는 중간주파수 신호는 증폭기(420)에서 증폭되며, 비교기(440)는 상기 증폭기(420)에서 증폭된 값을 기준값과 비교하여 비교 결과에 따라 신호를 출력한다. 그리고 원샷 회로(460)는 상기 비교기(440)에서 출력되는 신호를 전달한다. 상기 비교기(440)는 기준값과 증폭된 값에 차이가 있는 경우 차이가 나는 신호를 내어 릴레이(Relay)나 트라이악(Triac)의 동작 시점 신호로 출력한다. 즉, 비교기(440)는 해당 릴레이나 트라이악이 동작하지 않아도 될 때에는 로우 레벨을 출력하고, 해당 릴레이나 트라이악이 동작하여야 할 경우에는 하이 레벨을 출력하여 릴레이나 트라이악의 동작 여부를 제어한다. 상기 비교기(440)에서 출력되는 신호가 소정의 펄스 신호를 발생시키는 원샷 회로(460)를 거쳐 트라이악이나 릴레이를 구동시킴으로써 열선, 전구, 모터 등의 부하(500)가 제어된다.Referring to FIG. 4, the intermediate frequency signal output from the mixer 360 of the sensor unit 300 is amplified by the amplifier 420, and the comparator 440 compares the value amplified by the amplifier 420 with a reference value. The signal is output according to the comparison result. The one shot circuit 460 transfers the signal output from the comparator 440. When there is a difference between the reference value and the amplified value, the comparator 440 outputs a difference signal and outputs the signal as an operation timing signal of a relay or triac. That is, the comparator 440 outputs a low level when the corresponding relay or triac does not need to operate, and outputs a high level when the corresponding relay or triac should operate to control whether the relay or the triac operates. The signal output from the comparator 440 drives the triac or the relay via the one-shot circuit 460 that generates a predetermined pulse signal, thereby controlling the load 500 of the heating wire, the light bulb, the motor, and the like.
한편, 본 발명에 따른 물체 검출 센서는 도 5에 도시된 바와 같은 반도체 칩으로 구현될 수 있음은 당연하다.On the other hand, it is obvious that the object detection sensor according to the present invention can be implemented as a semiconductor chip as shown in FIG.
이상에서와 같이 도면과 명세서에서 최적의 실시예가 개시되었다. 여기서 특정한 용어들이 사용되었으나, 이는 단지 본 발명을 설명하기 위한 목적에서 사용된 것이지 의미 한정이나 특허청구범위에 기재된 본 발명의 범위를 제한하기 위하여 사용된 것은 아니다. 그러므로, 본 기술 분야의 통상의 지식을 가진 자라면 이로부터 다양한 변형 및 균등한 타 실시예가 가능하다는 점을 이해할 것이다. 따라서, 본 발명의 진정한 기술적 보호범위는 첨부된 특허청구범위의 기술적 사상에 의해 정해져야 할 것이다.As described above, the best embodiment has been disclosed in the drawings and the specification. Although specific terms have been used herein, they are used only for the purpose of describing the present invention and are not used to limit the scope of the present invention as defined in the meaning or claims. Therefore, those skilled in the art will understand that various modifications and equivalent other embodiments are possible from this. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

Claims (5)

  1. 교류 전원을 직류 전원으로 변환하는 전원부;A power supply unit for converting AC power into DC power;
    초고주파 신호를 연속적으로 생성하는 국부신호 발생부와, 상기 국부신호 발생부에 의해 생성된 초고주파 신호를 외부로 방사하는 안테나 송신부와, 상기 안테나 송신부로부터 방사된 초고주파 신호가 대상물에 반사되어 되돌아온 반사 신호를 수신하는 안테나 수신부와, 상기 국부신호 발생부에 의해 생성된 초고주파 신호와 상기 안테나 수신부를 통해 수신된 반사 신호를 혼합하여 중간주파수 신호로 변환하는 주파수 혼합부를 포함하는 센서부; 및A local signal generator for continuously generating an ultra high frequency signal, an antenna transmitter for radiating the ultra high frequency signal generated by the local signal generator, and a reflected signal returned by reflecting the microwave signal emitted from the antenna transmitter to an object A sensor unit including a receiving antenna receiving unit and a frequency mixing unit for mixing the ultra-high frequency signal generated by the local signal generating unit with the reflected signal received through the antenna receiving unit and converting the converted signal into an intermediate frequency signal; And
    상기 주파수 혼합부에 의해 변환된 중간주파수 신호를 처리하여 대상물의 존재 여부 및 움직임 정보를 획득하여 부하를 제어하는 신호 처리부를 포함하고,A signal processor configured to process the intermediate frequency signal converted by the frequency mixer to obtain load information and presence of an object, and to control a load;
    상기 전원부는 AC 입력 전원을 DC 전원으로 정류하는 정류기와 상기 정류기의 출력단에 병렬로 연결된 제너 다이오드(D1) 및 캐패시터(C2)를 포함하는 AC-DC 컨버터로 구성되는 것을 특징으로 하는, 초고주파 신호를 이용한 물체 검출 센서.The power supply unit comprises a rectifier for rectifying the AC input power source into a DC power source and an AC-DC converter including a Zener diode (D1) and a capacitor (C2) connected in parallel to the output terminal of the rectifier. Object detection sensor used.
  2. 청구항 1에 있어서,The method according to claim 1,
    상기 국부신호 발생부는,The local signal generator,
    기준 주파수 신호를 생성하는 진동자;An oscillator for generating a reference frequency signal;
    상기 초고주파 신호를 분주하는 분주 모듈;A division module for dividing the ultra-high frequency signal;
    상기 기준 주파수 신호와 상기 초고주파로부터 분주된 주파수 신호 간의 위상 및 주파수 차이를 검출하는 위상/주파수 검출기;A phase / frequency detector for detecting a phase and frequency difference between the reference frequency signal and the frequency signal divided from the ultra-high frequency;
    상기 위상/주파수 검출기의 출력 신호에 따른 전하량을 차징 또는 펌핑하는 차지 펌프;A charge pump for charging or pumping a charge amount according to an output signal of the phase / frequency detector;
    상기 전하 펌프의 출력 신호에 기초하여 공급되는 전류의 양을 조절하여 저역 주파수 성분을 필터링 하는 루프 필터; 및A loop filter for filtering low frequency components by adjusting an amount of current supplied based on an output signal of the charge pump; And
    상기 루프 필터의 출력 신호에 응답하여 발진하여 상기 초고주파 신호를 생성하는 전압제어 발진기를 포함하는 것을 특징으로 하는, 초고주파 신호를 이용한 물체 검출 센서.And a voltage controlled oscillator for oscillating in response to an output signal of the loop filter to generate the ultra-high frequency signal.
  3. 청구항 2에 있어서,The method according to claim 2,
    상기 분주 모듈은 고속 동작 모드 또는 저속 동작 모드에 따라 전류 모드 로직(Current Mode Logic: CML) 플립-플롭(Flip-flop) 구조의 주파수 분주기 또는 트루 싱글 페이즈 클럭(True Single Phase Clock: True Single Phase Clock) 플립-플롭 구조의 주파수 분주기를 이용하는 것을 특징으로 하는, 초고주파 신호를 이용한 물체 검출 센서.The frequency division module may be a frequency divider or a true single phase clock of a current mode logic (CML) flip-flop structure according to a high speed mode or a low speed mode. Clock) Object detection sensor using an ultra-high frequency signal, characterized in that using a frequency divider having a flip-flop structure.
  4. 청구항 1에 있어서,The method according to claim 1,
    상기 센서부는, 상기 주파수 혼합부로부터 출력되는 중간주파수 신호에서 중간주파수 이외의 주파수 대역에 해당하는 신호를 필터링하여 상기 신호 처리부로 전달하는 중간주파수 출력부를 더 포함하는 것을 특징으로 하는, 초고주파 신호를 이용한 물체 검출 센서.The sensor unit may further include an intermediate frequency output unit for filtering a signal corresponding to a frequency band other than the intermediate frequency from the intermediate frequency signal output from the frequency mixer and transmitting the filtered signal to the signal processing unit. Object detection sensor.
  5. 청구항 4에 있어서, The method according to claim 4,
    상기 센서부의 국부신호 발생부, 주파수 혼합부 및 중간주파수 출력부는 단일의 IC 칩으로 구현되는 것을 특징으로 하는, 초고주파 신호를 이용한 물체 검출 센서.The local signal generating unit, the frequency mixing unit and the intermediate frequency output unit of the sensor unit, characterized in that implemented as a single IC chip, the object detection sensor using an ultra-high frequency signal.
PCT/KR2012/003975 2012-05-18 2012-05-18 Object detection sensor using super high frequency signals WO2013172498A1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS605776A (en) * 1983-06-23 1985-01-12 Hiroshi Kamiyama Dc power source circuit
KR20040034231A (en) * 2002-10-21 2004-04-28 (주)동남엔텍 Microwave motion sensor module that use radio frequency and Perception method of object to use thereof
KR20060091832A (en) * 2005-02-16 2006-08-22 한국생산기술연구원 Wireless power supply for batter charge of smart-tag

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS605776A (en) * 1983-06-23 1985-01-12 Hiroshi Kamiyama Dc power source circuit
KR20040034231A (en) * 2002-10-21 2004-04-28 (주)동남엔텍 Microwave motion sensor module that use radio frequency and Perception method of object to use thereof
KR20060091832A (en) * 2005-02-16 2006-08-22 한국생산기술연구원 Wireless power supply for batter charge of smart-tag

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