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公开(公告)号：US11906659B2
公开(公告)日：2024-02-20
申请号：US17352185
申请日：2021-06-18
申请人： Chenshu Wu , Beibei Wang , Peng Zan , Sai Deepika Regani , Xiaolu Zeng , Hung-Quoc Duc Lai , K. J. Ray Liu , Oscar Chi-Lim Au
发明人： Chenshu Wu , Beibei Wang , Peng Zan , Sai Deepika Regani , Xiaolu Zeng , Hung-Quoc Duc Lai , K. J. Ray Liu , Oscar Chi-Lim Au
CPC分类号： G01S7/415 , G01S5/0252 , G01S5/06 , G01S7/006 , G01S13/56
摘要： Methods, apparatus and systems for wirelessly monitoring a micro motion of an object are described. In one example, a described system comprises: a transmitter configured for transmitting a first wireless signal through a wireless multipath channel of a venue; a receiver configured for receiving a second wireless signal through the wireless multipath channel; and a processor. The second wireless signal differs from the first wireless signal due to the wireless multipath channel and a motion of an object in the venue. The processor is configured for: obtaining a time series of channel information (TSCI) of the wireless multipath channel based on the second wireless signal, wherein each channel information (CI) of the TSCI comprises N1 CI components; selecting N2 CI components from the N1 CI components based on a first analysis of the N1 CI components; computing a micro-motion (MM) statistics based on the N2 selected CI components and the first analysis; monitoring the motion of the object based on a second analysis of the MM statistics; performing a task based on the first analysis and the second analysis; and generating a response based on the task, the first analysis and the second analysis.
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公开(公告)号：US20220299619A1
公开(公告)日：2022-09-22
申请号：US17838244
申请日：2022-06-12
申请人： Yuqian Hu , Beibei Wang , Sai Deepika Regani , Peng Zan , Chenshu Wu , Dan Bugos , Xiaolu Zeng , Hung-Quoc Duc Lai , K. J. Ray Liu , Oscar Chi-Lim Au
发明人： Yuqian Hu , Beibei Wang , Sai Deepika Regani , Peng Zan , Chenshu Wu , Dan Bugos , Xiaolu Zeng , Hung-Quoc Duc Lai , K. J. Ray Liu , Oscar Chi-Lim Au
摘要： Methods, apparatus and systems for wireless sensing based on linkwise motion statistics (link-MS) are described. In one example, a described method comprises: determining a plurality of heterogeneous wireless devices of a wireless sensing system in a venue; determining a plurality of device-links each of comprises two of the heterogeneous wireless devices, one functioning as a transmitter and the other functioning as a receiver; for each respective device-link of the plurality of device-links, transmitting a respective wireless signal from a respective transmitter of the respective device-link through a wireless multipath channel of the venue, wherein the wireless multipath channel is impacted by a motion of an object in the venue, receiving the respective wireless signal by a respective receiver of the respective device-link through the wireless multipath channel, wherein the respective received wireless signal differs from the respective transmitted wireless signal due to the wireless multipath channel of the venue and the motion of the object, obtaining a respective time series of channel information (TSCI) of the wireless multipath channel based on the respective received wireless signal of the respective device-link, computing a respective link-MS for the respective device-link based on the respective TSCI; performing a sensing task associated with the motion of the object based on at least one of: all the TSCI or all the link-MS; and computing a location in the venue associated with the sensing task based on all the link-MS.
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公开(公告)号：US20210311166A1
公开(公告)日：2021-10-07
申请号：US17352185
申请日：2021-06-18
申请人： Chenshu Wu , Beibei Wang , Peng Zan , Sai Deepika Regani , Xiaolu Zeng , Hung-Quoc Duc Lai , K. J. Ray Liu , Oscar Chi-Lim Au
发明人： Chenshu Wu , Beibei Wang , Peng Zan , Sai Deepika Regani , Xiaolu Zeng , Hung-Quoc Duc Lai , K. J. Ray Liu , Oscar Chi-Lim Au
摘要： Methods, apparatus and systems for wirelessly monitoring a micro motion of an object are described. In one example, a described system comprises: a transmitter configured for transmitting a first wireless signal through a wireless multipath channel of a venue; a receiver configured for receiving a second wireless signal through the wireless multipath channel; and a processor. The second wireless signal differs from the first wireless signal due to the wireless multipath channel and a motion of an object in the venue. The processor is configured for: obtaining a time series of channel information (TSCI) of the wireless multipath channel based on the second wireless signal, wherein each channel information (CI) of the TSCI comprises N1 CI components; selecting N2 CI components from the N1 CI components based on a first analysis of the N1 CI components; computing a micro-motion (MM) statistics based on the N2 selected CI components and the first analysis; monitoring the motion of the object based on a second analysis of the MM statistics; performing a task based on the first analysis and the second analysis; and generating a response based on the task, the first analysis and the second analysis.
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公开(公告)号：US20220308195A1
公开(公告)日：2022-09-29
申请号：US17838228
申请日：2022-06-12
申请人： Xiaolu Zeng , Beibei Wang , Chenshu Wu , Sai Deepika Regani , K. J. Ray Liu , Oscar Chi-Lim Au
发明人： Xiaolu Zeng , Beibei Wang , Chenshu Wu , Sai Deepika Regani , K. J. Ray Liu , Oscar Chi-Lim Au
摘要： Methods, apparatus and systems for wireless sensing based on channel information are described. In one example, a described system comprises: a transmitter configured to transmit a wireless signal through a wireless multipath channel of a venue, wherein the wireless multipath channel is impacted by a motion of an object in the venue; a receiver configured to receive the wireless signal through the wireless multipath channel, wherein the received wireless signal differs from the transmitted wireless signal due to the wireless multipath channel and the motion of the object; and a processor. The processor is configured for: obtaining N1 time series of channel information (TSCI) of the wireless multipath channel based on the received wireless signal, computing N4 selected projections based on the N1 TSCI, and performing a sensing task associated with the motion of the object based on the N4 selected projections. N4 is a positive integer. N1=N2*N3. N2 is a quantity of transmit antennas on the transmitter. N3 is a quantity of receive antennas on the receiver. Each TSCI is associated with a respective transmit antenna of the transmitter and a respective receive antenna of the receiver.
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公开(公告)号：US20210232235A1
公开(公告)日：2021-07-29
申请号：US17180763
申请日：2021-02-20
申请人： Sai Deepika Regani , Chenshu Wu , Beibei Wang , Min Wu , K. J. Ray Liu , Oscar Chi-Lim Au
发明人： Sai Deepika Regani , Chenshu Wu , Beibei Wang , Min Wu , K. J. Ray Liu , Oscar Chi-Lim Au
IPC分类号： G06F3/038 , H04W4/029 , G06F3/0354
摘要： Methods, apparatus and systems for wireless writing tracking are described. In one example, a described system comprises: a transmitter configured for transmitting a first wireless signal through a wireless multipath channel of a venue; a receiver configured for receiving a second wireless signal through the wireless multipath channel; and a processor. The second wireless signal comprises a reflection of the first wireless signal by a tip of a writing instrument in the venue. The processor is configured for: obtaining a time series of channel information (CI) of the wireless multipath channel based on the second wireless signal, wherein each CI comprises at least one of: a channel state information (CSI), channel impulse response (CIR), channel frequency response (CFR), or received signal strength index (RSSI); and tracking a movement of the tip of the writing instrument based on the time series of CI (TSCI).
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公开(公告)号：US12046040B2
公开(公告)日：2024-07-23
申请号：US16871004
申请日：2020-05-10
申请人： Fengyu Wang , Beibei Wang , Sai Deepika Regani , Feng Zhang , Chenshu Wu , Dan Bugos , Chun-Chia Jack Shih , K. J. Ray Liu , Oscar Chi-Lim Au
发明人： Fengyu Wang , Beibei Wang , Sai Deepika Regani , Feng Zhang , Chenshu Wu , Dan Bugos , Chun-Chia Jack Shih , K. J. Ray Liu , Oscar Chi-Lim Au
摘要： Methods, apparatus and systems for counting and recognizing objects or people based on rhythmic motion monitoring are described. A described method comprises: obtaining N1 time series of channel information (TSCI) of a wireless multipath channel that is impacted by a rhythmic motion of an object in a venue, wherein the N1 TSCI is extracted from a wireless signal transmitted from a transmitter to a receiver through the wireless multipath channel; decomposing each of the N1 TSCI into N2 time series of channel information components (TSCIC), wherein a channel information component (CIC) of each of the N2 TSCIC at a time comprises a respective component of a channel information (CI) of the TSCI at the time, wherein N1 and N2 are positive integers; monitoring the rhythmic motion of the object based on at least one of: the N1*N2 TSCIC and the N1 TSCI.
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公开(公告)号：US11592913B2
公开(公告)日：2023-02-28
申请号：US17180763
申请日：2021-02-20
申请人： Sai Deepika Regani , Chenshu Wu , Beibei Wang , Min Wu , K. J. Ray Liu , Oscar Chi-Lim Au
发明人： Sai Deepika Regani , Chenshu Wu , Beibei Wang , Min Wu , K. J. Ray Liu , Oscar Chi-Lim Au
IPC分类号： G06F3/038 , G06F3/0354 , H04W4/029
摘要： Methods, apparatus and systems for wireless writing tracking are described. In one example, a described system comprises: a transmitter configured for transmitting a first wireless signal through a wireless multipath channel of a venue; a receiver configured for receiving a second wireless signal through the wireless multipath channel; and a processor. The second wireless signal comprises a reflection of the first wireless signal by a tip of a writing instrument in the venue. The processor is configured for: obtaining a time series of channel information (CI) of the wireless multipath channel based on the second wireless signal, wherein each CI comprises at least one of: a channel state information (CSI), channel impulse response (CIR), channel frequency response (CFR), or received signal strength index (RSSI); and tracking a movement of the tip of the writing instrument based on the time series of CI (TSCI).
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公开(公告)号：US20220386945A1
公开(公告)日：2022-12-08
申请号：US17888429
申请日：2022-08-15
申请人： Chenshu Wu , Beibei Wang , Oscar Chi-Lim Au , Hung-Quoc Duc Lai , K. J. Ray Liu
发明人： Chenshu Wu , Beibei Wang , Oscar Chi-Lim Au , Hung-Quoc Duc Lai , K. J. Ray Liu
IPC分类号： A61B5/00 , A61B5/0507 , A61B5/11
摘要： Methods, apparatus and systems for radio-based sleep tracking are described. In one example, a described system comprises: a transmitter configured to transmit a first wireless signal through a wireless multipath channel in a venue; a receiver configured to receive a second wireless signal through the wireless multipath channel, wherein the second wireless signal differs from the first wireless signal due to the wireless multipath channel which is impacted by a sleeping motion of an object in the venue; and a processor. The processor is configured for: obtaining a time series of channel information (TSCI) of the wireless multipath channel based on the second wireless signal, wherein each channel information (CI) of the TSCI comprises N1 components, wherein N1 is a positive integer larger than one, computing N1 component-wise analytics each associated with one of the N1 components of the TSCI, identifying N2 largest component-wise analytics among the N1 component-wise analytics, wherein N2 is a positive integer less than N1 computing at least one first motion statistics based on the N2 largest component-wise analytics of the TSCI, and monitoring the sleeping motion of the object based on the at least one first motion statistics.
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公开(公告)号：US11771366B2
公开(公告)日：2023-10-03
申请号：US17888429
申请日：2022-08-15
申请人： Chenshu Wu , Beibei Wang , Oscar Chi-Lim Au , Hung-Quoc Duc Lai , K. J. Ray Liu
发明人： Chenshu Wu , Beibei Wang , Oscar Chi-Lim Au , Hung-Quoc Duc Lai , K. J. Ray Liu
IPC分类号： A61B5/00 , A61B5/11 , A61B5/0507
CPC分类号： A61B5/4809 , A61B5/0507 , A61B5/1116 , A61B5/7264
摘要： Methods, apparatus and systems for radio-based sleep tracking are described. In one example, a described system comprises: a transmitter configured to transmit a first wireless signal through a wireless multipath channel in a venue; a receiver configured to receive a second wireless signal through the wireless multipath channel, wherein the second wireless signal differs from the first wireless signal due to the wireless multipath channel which is impacted by a sleeping motion of an object in the venue; and a processor. The processor is configured for: obtaining a time series of channel information (TSCI) of the wireless multipath channel based on the second wireless signal, wherein each channel information (CI) of the TSCI comprises N1 components, wherein N1 is a positive integer larger than one, computing N1 component-wise analytics each associated with one of the N1 components of the TSCI, identifying N2 largest component-wise analytics among the N1 component-wise analytics, wherein N2 is a positive integer less than N1, computing at least one first motion statistics based on the N2 largest component-wise analytics of the TSCI, and monitoring the sleeping motion of the object based on the at least one first motion statistics.
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10.发明申请公开(公告)号：US20210247483A1
公开(公告)日：2021-08-12
申请号：US17214838
申请日：2021-03-27
申请人： Fengyu Wang , Beibei Wang , Xiaolu Zeng , Chenshu Wu , K. J. Ray Liu , Oscar Chi-Lim Au
发明人： Fengyu Wang , Beibei Wang , Xiaolu Zeng , Chenshu Wu , K. J. Ray Liu , Oscar Chi-Lim Au
摘要： Methods, apparatus and systems for wireless vital monitoring are described. In one example, a described system comprises: a transmitter configured for transmitting a first wireless signal through a wireless channel of a venue; a receiver configured for receiving a second wireless signal through the wireless channel; and a processor. The second wireless signal comprises a reflection of the first wireless signal by at least one living being having at least one repetitive motion in the venue. The processor is configured for: obtaining a time series of channel information (TSCI) of the wireless channel based on the second wireless signal; generating, for each living being of the at least one living being, a vital signal representing all repetitive motions of the living being based on the TSCI; extracting, from the vital signal of each living being, a heartbeat signal; and monitoring, for each living being in the venue, a heart rate variability based on the heartbeat signal.
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