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公开(公告)号：US20180357474A1
公开(公告)日：2018-12-13
申请号：US15871230
申请日：2018-01-15
Applicant: NATIONAL SUN YAT-SEN UNIVERSITY
Inventor： Tzyy-Sheng Horng , Chia-Hung Yeh , Fu-Kang Wang , Mu-Cyun Tang , Chien-Lun Chen , Min-Hui Lin
CPC classification number: G06K9/00342 , G01S7/415 , G01S13/867 , G06K9/00355 , G06T7/254 , G06T2207/10016 , G06T2207/30196 , G06T2207/30241
Abstract: A 3-D path detection system includes an image capture device, a radar device and a computing module. The image capture device is provided to produce a dynamic image for calculating the x- and y-direction (transverse) pixel-value displacements according to a captured moving object image. The radar device is configured to transmit an input wireless signal to a moving object and receive a reflection signal from the moving object, and is configured to calculate a z-direction (longitudinal) displacement of the moving object according to a Doppler shift in the reflection signal. The computing module is configured to construct a 3-D path of the moving object according to the x- and y-direction pixel-value displacements of the moving object image and the z-direction displacement of the moving object.
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公开(公告)号：US20180224526A1
公开(公告)日：2018-08-09
申请号：US15491406
申请日：2017-04-19
Applicant: NATIONAL SUN YAT-SEN UNIVERSITY
Inventor： Fu-Kang Wang , Tzyy-Sheng Horng , Mu-Cyun Tang
CPC classification number: G01S7/352 , G01S13/32 , G01S13/584 , G01S2007/358 , H03L7/24
Abstract: A quadrature self-injection-locked radar utilizes a phase shifter to make a oscillation signal operating in two phase modes, and utilizes a frequency demodulator for frequency demodulation and a signal processor for signal processing to eliminate the nonlinear distortion caused by self-injection locked phenomenon. Therefore, the self-injection locked radar can be applied to more cases for detecting displacement variations with any range.
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公开(公告)号：US09846226B2
公开(公告)日：2017-12-19
申请号：US14664906
申请日：2015-03-22
Applicant: National Sun Yat-sen University
Inventor： Tzyy-Sheng Horng , Fu-Kang Wang , Yen-Chen Chiu
CPC classification number: G01S13/003 , G01S13/52 , G01S13/56 , G01S13/88
Abstract: A motion detection device is provided. The motion detection device includes a first antenna, a voltage-controlled oscillator, a phase detector and a signal processing unit. The first antenna receives a first signal generated by a second signal reflected by a target object, so as to output the first signal to the phase detector or the voltage-controlled oscillator. The voltage-controlled oscillator receives first signal or the second signal and receives a frequency adjustment signal, so as to generate an oscillating signal according to the frequency adjustment signal and the one of the first signal and the second signal. The phase detector receives the oscillating signal and another one of the first signal and the second signal, and generates a first phase output signal and a second phase output signal. The signal processing unit estimates motion parameters of the target object according to the first and the second phase output signal.
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公开(公告)号：US09375153B2
公开(公告)日：2016-06-28
申请号：US14151930
申请日：2014-01-10
Inventor： Tzyy-Sheng Horng , Fu-Kang Wang , Kang-Chun Peng
CPC classification number: A61B5/0205 , A61B5/0507 , A61B5/1135 , G01S13/583 , G01S13/88 , G08B13/2491
Abstract: A motion/vibration sensor includes a transmit/receive antenna unit, an oscillation unit and a frequency-mixing unit. The transmit/receive antenna unit receives an output signal from the oscillation unit and transmits a detection signal toward at least one object. The detection signal is reflected by the object as a reflected detection signal and received by the transmit/receive antenna unit. The oscillation unit receives the reflected detection signal from the transmit/receive antenna unit for self-injection locking; and the frequency-mixing unit receives the reflected detection signal from the transmit/receive antenna unit for frequency demodulation. The frequency-mixing unit mixes and demodulates the reflected detection signal from the transmit/receive antenna unit with the output signal from the oscillation unit into a baseband output signal which represents a motion/vibration information.
Abstract translation: 运动/振动传感器包括发射/接收天线单元，振荡单元和混频单元。 发送/接收天线单元接收来自振荡单元的输出信号，并向至少一个对象发送检测信号。 检测信号作为反射检测信号被物体反射并由发射/接收天线单元接收。 振荡单元从发送/接收天线单元接收反射的检测信号用于自动注入锁定; 并且所述混频单元从所述发射/接收天线单元接收所述反射的检测信号以进行频率解调。 频率混合单元将来自发送/接收天线单元的反射检测信号与来自振荡单元的输出信号混合并解调成表示运动/振动信息的基带输出信号。
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公开(公告)号：US20220196819A1
公开(公告)日：2022-06-23
申请号：US17197132
申请日：2021-03-10
Applicant: NATIONAL SUN YAT-SEN UNIVERSITY
Inventor： Fu-Kang Wang , Pin-Hsun Juan , Chao-Kai Wen , De-Ming Chian
Abstract: A FCFMSIL radar includes a SILO, a frequency conversion unit, an antenna unit, a demodulation unit and a processing unit. The frequency conversion unit converts an oscillation signal of the SILO into a FMCW signal. The antenna unit transmits the FMCW signal to an area as a transmitted signal and receives a reflected signal from the area as a received signal. The frequency conversion unit converts the received signal into an injection signal and injects it into the SILO. The demodulation unit demodulates the oscillation signal into an in-phase demodulated signal and a quadrature demodulated signal. The processing unit processes the in-phase and the quadrature demodulated signals to obtain a baseband signal and thus acquire a phase and a frequency of a tone in the frequency-domain baseband signal, and determines the tone corresponding to one or multiple objects based on the phase and frequency of the tone.
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Patent Agency Ranking
公开(公告)号：US20220146624A1
公开(公告)日：2022-05-12
申请号：US17106380
申请日：2020-11-30
Applicant: NATIONAL SUN YAT-SEN UNIVERSITY
Inventor： Fu-Kang Wang , Kuan-Hung Chen , Pin-Hsun Juan
IPC: G01S7/35 , G01S13/536
Abstract: In a frequency-offset self-injection-locked (FOSIL) radar, a first mixer is provided to mix a first oscillation signal of a first injection-locked oscillator (ILO) and a second oscillation signal of a second ILO so as to cancel out the frequency drifts of the first and second oscillation signals. Accordingly, the transmit frequency of the FOSIL radar can remain constant to mitigate the EMI issue.
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公开(公告)号：US10679043B2
公开(公告)日：2020-06-09
申请号：US15871230
申请日：2018-01-15
Applicant: NATIONAL SUN YAT-SEN UNIVERSITY
Inventor： Tzyy-Sheng Horng , Chia-Hung Yeh , Fu-Kang Wang , Mu-Cyun Tang , Chien-Lun Chen , Min-Hui Lin
Abstract: A 3-D path detection system includes an image capture device, a radar device and a computing module. The image capture device is provided to produce a dynamic image for calculating the x- and y-direction (transverse) pixel-value displacements according to a captured moving object image. The radar device is configured to transmit an input wireless signal to a moving object and receive a reflection signal from the moving object, and is configured to calculate a z-direction (longitudinal) displacement of the moving object according to a Doppler shift in the reflection signal. The computing module is configured to construct a 3-D path of the moving object according to the x- and y-direction pixel-value displacements of the moving object image and the z-direction displacement of the moving object.
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公开(公告)号：US10601132B2
公开(公告)日：2020-03-24
申请号：US15695069
申请日：2017-09-05
Applicant: NATIONAL SUN YAT-SEN UNIVERSITY
Inventor： Fu-Kang Wang , Tzyy-Sheng Horng , Lih-Tynh Hwang , Chung-Yi Hsu , Cho-Ying Chuang
IPC: H01Q3/36 , H01Q21/22 , G01S13/88 , A61B5/00 , A61B5/0205 , G01S13/536 , A61B5/05 , G01S7/03 , G01S13/87 , H01Q3/26 , A61B5/08 , A61B5/024 , G01S13/58 , G01S13/02 , G01S13/34
Abstract: An active phase switchable array includes a plurality of antenna elements and a bias circuit. Each of the radar elements includes an antenna, a power coupling network and an injection-locked oscillator (ILO), and each of the antenna elements is coupled with each other through the power coupling networks for operating the ILO of each of the antenna elements in self- and mutual-injection-locked states. The antenna elements in self-injection-locked state are utilized to detect the vital signs of subjects, and the antenna elements in mutual-injection-locked state are utilized to produce phase difference between the radiating signals of the antenna elements for forming a beam. As a result, the active phase switchable array can simultaneously detect the vital signs of multiple subjects.
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公开(公告)号：US20180338730A1
公开(公告)日：2018-11-29
申请号：US15807707
申请日：2017-11-09
Applicant: NATIONAL SUN YAT-SEN UNIVERSITY
Inventor： Tzyy-Sheng Horng , Fu-Kang Wang , Mu-Cyun Tang
CPC classification number: A61B5/7207 , A61B5/0507 , A61B5/1135 , G01S7/354 , G01S13/003 , G01S13/583 , G01S13/88
Abstract: A vital sign detection system includes a radar device, a nonreciprocal network, a first antenna and a second antenna. An output signal from the radar device is delivered to the first antenna via the nonreciprocal network and then transmitted to a first side of a biological subject via the first antenna. A first reflection signal from the first side of the biological subject is received by the first antenna and then delivered to the second antenna via the nonreciprocal network and then transmitted to a second side of the biological subject via the second antenna. A second reflection signal from the second side of the biological subject is received by the second antenna and then delivered to the radar device via the nonreciprocal network for vital sign detection with random body movement cancellation.
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公开(公告)号：US09603555B2
公开(公告)日：2017-03-28
申请号：US14154252
申请日：2014-01-14
Inventor： Tzyy-Sheng Horng , Fu-Kang Wang , Kang-Chun Peng
CPC classification number: A61B5/113 , A61B5/0002 , A61B5/0059 , A61B5/024 , A61B5/02416 , A61B5/05 , A61B5/0816 , A61B5/1102 , A61B5/725 , A61B5/7257 , G01H3/00
Abstract: A motion/vibration detection system and method therefore are provided. The system includes a transmitter and a receiver. The transmitter includes a transmit/receive antenna unit and a first oscillator. The receiver includes a receiving unit and a demodulation unit. The transmit/receive antenna unit receives an output signal from the first oscillator and transmits a detection signal. The detection signal is reflected from at least one object under detection into a reflected detection signal, which is received by the transmit/receive antenna unit. The transmit/receive antenna unit injects the reflected detection signal into the first oscillator and accordingly the first oscillator is under a self-injection locking mode. The receiving unit receives the detection signal. The demodulation unit demodulates the detection signal received by the receiving unit into a baseband output signal, to extract at least one motion/vibration information of the objection under detection.
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