WO2022114270A1 - Microwave wireless power transfer transmission/reception system comprising radar sensor - Google Patents

Microwave wireless power transfer transmission/reception system comprising radar sensor Download PDF

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Publication number
WO2022114270A1
WO2022114270A1 PCT/KR2020/016969 KR2020016969W WO2022114270A1 WO 2022114270 A1 WO2022114270 A1 WO 2022114270A1 KR 2020016969 W KR2020016969 W KR 2020016969W WO 2022114270 A1 WO2022114270 A1 WO 2022114270A1
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WO
WIPO (PCT)
Prior art keywords
radar sensor
reception system
wireless power
transmission
power transfer
Prior art date
Application number
PCT/KR2020/016969
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French (fr)
Korean (ko)
Inventor
김당오
양대근
이주용
조동호
Original Assignee
한국과학기술원
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 한국과학기술원 filed Critical 한국과학기술원
Priority to PCT/KR2020/016969 priority Critical patent/WO2022114270A1/en
Publication of WO2022114270A1 publication Critical patent/WO2022114270A1/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
    • 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
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/40—Means for monitoring or calibrating
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/20—Circuit arrangements or systems for wireless supply or distribution of electric power using microwaves or radio frequency waves
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/90—Circuit arrangements or systems for wireless supply or distribution of electric power involving detection or optimisation of position, e.g. alignment

Definitions

  • the present technology relates to a microwave wireless power transmission transmission/reception system including a radar sensor.
  • a conventional wireless power transmission/reception system has a configuration for wirelessly transmitting a power signal and detecting it using an antenna.
  • the present embodiment implements an automatic calibration function of a transmission/reception system using a radar sensor, implements focusing beamforming, and implements adaptive beam alignment.
  • the power transmission system includes a power supply unit, a radar module, a control unit, a high voltage source generator, a phase control unit, an RF power circuit unit, and a plurality of sub-array transmission antennas.
  • automatic calibration, focusing beamforming, and adaptive beam alignment of a transmission/reception system can be performed using a radar sensor.
  • 1 is a schematic diagram of the present embodiment.
  • FIG. 2 is a conceptual diagram of a focused distance detecting operation according to the present embodiment.
  • 3 is a conceptual diagram of an operation of beam alignment.
  • FIG. 4 is a diagram of a transmission/reception system according to the present embodiment.
  • FIG. 5 is a conceptual diagram of a transmitter according to the present embodiment.
  • This embodiment implements the initial installation and automatic calibration function of the transmission/reception system using a radar sensor.
  • This embodiment implements focusing beamforming, which forms a beam in the Fresnel region and focuses multiple beams of a transmit antenna on a focal point. Phase control for beam focusing is performed through the radar sensor's distance detection function.
  • This embodiment implements adaptive beam alignment due to a very narrow beamwidth of a high-gain transmit/receive antenna.
  • Phase control for beam alignment is performed by spatially scanning the receiving antenna image with high RCS through the Synthetic Aperture Radar function in the transmitter at the initial stage of operation.
  • distance detection, reception antenna position, and beam center detection are performed using a radar sensor, and the antenna and beamforming circuit of the radar sensor are combined with a wireless power transmission function.
  • the focal length for beam focusing of the transmitting antenna can be actively controlled
  • the sub-array antenna for wireless power transmission and the RF power transmission circuit module have a high gain, it is possible to use the antenna and RF circuit part for individual radar sensors.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

The wireless power transfer system according to the present embodiment comprises a power supply unit, a radar module, a control unit, a high voltage source generator, a phase control unit, an RF power circuit unit, and a plurality of subarray transmission antennas and carries out automatic calibration of a transmission/reception system, focusing beamforming, and adaptive beam alignment by using a radar sensor.

Description

RADAR 센서를 포함하는 마이크로파 무선전력전송 송수신 시스템 Microwave wireless power transmission transmission/reception system including RADAR sensor
본 기술은 Radar 센서를 포함하는 마이크로파 무선전력전송 송수신 시스템과 관련된다.The present technology relates to a microwave wireless power transmission transmission/reception system including a radar sensor.
종래의 무선 전력 전송 송수신 시스템은 무선으로 전력 신호를 송신하고, 안테나를 이용하여 이를 검출하는 구성을 가진다.A conventional wireless power transmission/reception system has a configuration for wirelessly transmitting a power signal and detecting it using an antenna.
본 실시예는 레이다 센서를 이용하여 송수신 시스템의 자동 캘리브레이션 기능을 구현하고, 포커싱 빔포밍을 구현하며, 적응적 빔 정렬를 구현한다.The present embodiment implements an automatic calibration function of a transmission/reception system using a radar sensor, implements focusing beamforming, and implements adaptive beam alignment.
본 실시예에 의한 전력 전송 시스템은 전원부, 레이더 모듈, 제어부, 고전압원 생성기, 위상 제어부, RF 전력 회로부 및 복수의 부배열 송신 안테나를 포함한다.The power transmission system according to the present embodiment includes a power supply unit, a radar module, a control unit, a high voltage source generator, a phase control unit, an RF power circuit unit, and a plurality of sub-array transmission antennas.
본 기술에 의하면, 레이다 센서를 이용하여 송수신 시스템의 자동 캘리브레이션, 포커싱 빔포밍 및 적응적 빔정렬을 수행할 수 있다.According to the present technology, automatic calibration, focusing beamforming, and adaptive beam alignment of a transmission/reception system can be performed using a radar sensor.
도 1은 본 실시예의 개요도이다. 1 is a schematic diagram of the present embodiment.
도 2는 본 실시예의 Focused distance detecting 동작 개념도이다. 2 is a conceptual diagram of a focused distance detecting operation according to the present embodiment.
도 3은 빔 정렬의 동작 개념도이다. 3 is a conceptual diagram of an operation of beam alignment.
도 4는 본 실시예의 송수신 시스템도이다. 4 is a diagram of a transmission/reception system according to the present embodiment.
도 5는 본 실시예의 송신부 개념도이다. 5 is a conceptual diagram of a transmitter according to the present embodiment.
본 실시예는 Radar 센서를 이용하여 송수신 시스템의 초기 설치 및 자동 Calibration 기능 구현한다. This embodiment implements the initial installation and automatic calibration function of the transmission/reception system using a radar sensor.
본 실시예는 Fresnel region에서 빔을 형성하고, 송신 안테나의 다중 빔을 초점(Focal point)에 집중 시키는 Focusing beamforming 구현한다. Radar 센서의 거리 감지 기능을 통하여 Beam focusing용 위상 제어 수행한다.This embodiment implements focusing beamforming, which forms a beam in the Fresnel region and focuses multiple beams of a transmit antenna on a focal point. Phase control for beam focusing is performed through the radar sensor's distance detection function.
본 실시예는 고이득 송수신 안테나의 매우 좁은 빔폭으로 인한 Adaptive beam alignment 구현한다. 동작 초기 송신부에 Synthetic aperture radar 기능을 통하여 RCS가 높은 수신 안테나 이미지를 공간 스캔하여 Beam alignment를 위한 위상 제어 수행한다.This embodiment implements adaptive beam alignment due to a very narrow beamwidth of a high-gain transmit/receive antenna. Phase control for beam alignment is performed by spatially scanning the receiving antenna image with high RCS through the Synthetic Aperture Radar function in the transmitter at the initial stage of operation.
본 실시예는 Radar 센서를 이용하여 거리감지, 수신 안테나 위치 및 빔 중심 감지를 수행하며, Radar 센서의 Antenna 및 beamforming 회로는 무선전력전송 기능과 겸용이다.In this embodiment, distance detection, reception antenna position, and beam center detection are performed using a radar sensor, and the antenna and beamforming circuit of the radar sensor are combined with a wireless power transmission function.
2.1 Radar 센서를 이용한 초점 거리 감지 및 Beam focusing2.1 Focal length detection and beam focusing using Radar sensor
1) Fresnel region에서의 수신 안테나까지의 거리에서 송신 안테나 Beam focusing을 위한 초점 거리를 능동적으로 제어 가능 1) From the distance from the Fresnel region to the receiving antenna, the focal length for beam focusing of the transmitting antenna can be actively controlled
2) Radar 센서를 통하여 감지된 거리를 이용하여 Beam focusing을 위한 송신 안테나 위상 제어 2) Transmit antenna phase control for beam focusing using the distance sensed by the radar sensor
2.2 Synthetic aperture radar를 이용한 Beam alignment2.2 Beam alignment using synthetic aperture radar
1) 송신부에서 Synthetic aperture radar 기능을 통하여 RCS가 높은 수신 안테나 이미지를 공간 스캔 1) Spatial scan of the receiving antenna image with high RCS through the Synthetic Aperture Radar function in the transmitter
2) 공간 스캔을 통한 수신 안테나 위치 확인 후 Beam alignment를 위한 위상 제어 2) Phase control for beam alignment after checking the receiving antenna position through spatial scan
2.3 부배열 안테나 및 RF 회로부(위상천이 포함) 겸용2.3 Sub-array antenna and RF circuit part (including phase shift) combined
1) 무선전력전송용 부배열 안테나 및 RF전력 송신회로 모듈 자체에서 높은 이득을 가지고 있으므로, 개별 Radar 센서용 안테나 및 RF 회로부 사용 가능 1) Since the sub-array antenna for wireless power transmission and the RF power transmission circuit module have a high gain, it is possible to use the antenna and RF circuit part for individual radar sensors.
2) 거리 감지 및 Beam alignment 위해서 별도의 Radar 센서용 Antenna를 사용하는 것은 효율성이 낮음. 2) Using a separate antenna for radar sensor for distance detection and beam alignment is inefficient.

Claims (1)

  1. 전원부, 레이더 모듈, 제어부, 고전압원 생성기, 위상 제어부, RF 전력 회로부 및 복수의 부배열 송신 안테나를 포함하며, It includes a power supply unit, a radar module, a control unit, a high voltage source generator, a phase control unit, an RF power circuit unit, and a plurality of sub-array transmission antennas,
    상기 레이다 센서를 이용하여 송수신 시스템의 자동 캘리브레이션, 포커싱 빔포밍 및 적응적 빔 정렬을 수행하는 무선전력전송 시스템.A wireless power transmission system for performing automatic calibration, focusing beamforming, and adaptive beam alignment of a transmission/reception system using the radar sensor.
PCT/KR2020/016969 2020-11-26 2020-11-26 Microwave wireless power transfer transmission/reception system comprising radar sensor WO2022114270A1 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150260835A1 (en) * 2014-03-17 2015-09-17 Qualcomm Incorporated Systems, methods, and apparatus for radar-based detection of objects in a predetermined space
US20160033254A1 (en) * 2014-07-31 2016-02-04 Ossia, Inc. Techniques for determining distance between radiating objects in multipath wireless power delivery environments
US20170085126A1 (en) * 2015-09-22 2017-03-23 Energous Corporation Systems and methods for generating and transmitting wireless power transmission waves
KR20170112899A (en) * 2016-03-31 2017-10-12 삼성전자주식회사 Wireless power transmitter and method for controlling thereof
KR20190130844A (en) * 2018-05-15 2019-11-25 영남대학교 산학협력단 wireless power transmitter

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150260835A1 (en) * 2014-03-17 2015-09-17 Qualcomm Incorporated Systems, methods, and apparatus for radar-based detection of objects in a predetermined space
US20160033254A1 (en) * 2014-07-31 2016-02-04 Ossia, Inc. Techniques for determining distance between radiating objects in multipath wireless power delivery environments
US20170085126A1 (en) * 2015-09-22 2017-03-23 Energous Corporation Systems and methods for generating and transmitting wireless power transmission waves
KR20170112899A (en) * 2016-03-31 2017-10-12 삼성전자주식회사 Wireless power transmitter and method for controlling thereof
KR20190130844A (en) * 2018-05-15 2019-11-25 영남대학교 산학협력단 wireless power transmitter

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