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公开(公告)号：US10735298B2
公开(公告)日：2020-08-04
申请号：US16200608
申请日：2018-11-26
发明人： Chen Chen , Feng Zhang , Qinyi Xu , Beibei Wang , Chenshu Wu , Hangfang Zhang , Chau-Wai Wong , David N. Claffey , Chun-I Chen , Hung-Quoc Duc Lai , Zhung-Han Wu , Min Wu , Yi Han , Oscar Chi-Lim Au , K. J. Ray Liu
摘要： Methods, apparatus and systems for detecting and monitoring vital signs and other periodic motions of an object are disclosed. In one example, a system for monitoring object motion in a venue is disclosed. The system comprises a transmitter, a receiver, and a vital sign estimator. The transmitter is located at a first position in the venue and configured for transmitting a wireless signal through a wireless multipath channel impacted by a pseudo-periodic motion of an object in the venue. The receiver is located at a second position in the venue and configured for: receiving the wireless signal through the wireless multipath channel impacted by the pseudo-periodic motion of the object in the venue, and obtaining at least one time series of channel information (TSCI) of the wireless multipath channel based on the wireless signal. The vital sign estimator is configured for: determining that at least one portion of the at least one TSCI in a current sliding time window is associated with the pseudo-periodic motion of the object in the venue, and computing a current characteristics related to the pseudo-periodic motion of the object in the current sliding time window based on at least one of: the at least one portion of the at least one TSCI in the current sliding time window, at least one portion of the at least one TSCI in a past sliding time window, and a past characteristics related to the pseudo-periodic motion of the object in the past sliding time window.
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2.发明申请公开(公告)号：US20200064444A1
公开(公告)日：2020-02-27
申请号：US16667757
申请日：2019-10-29
发明人： Sai Deepika Regani , Qinyi Xu , Beibei Wang , Min Wu , Oscar Chi-Lim Au , K. J. Ray Liu
摘要： Methods, apparatus and systems for monitoring an object expression are described. In one example, a described apparatus in a venue comprises a receiver and a processor. The receiver is configured for: receiving a wireless signal from a transmitter through a wireless multipath channel that is impacted by an expression of an object in the venue, wherein the object has at least one movable part and is expressed in the expression with respect to a setup in the venue; and obtaining a time series of channel information (TSCI) of the wireless multipath channel based on the wireless signal received by the receiver. The processor is configured for computing information associated with the object based at least partially on the TSCI obtained when the object is expressed in the expression, and performing, based on the information associated with the object, a task associated with at least one of the object and the venue.
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公开(公告)号：US10397039B2
公开(公告)日：2019-08-27
申请号：US16203317
申请日：2018-11-28
发明人： Feng Zhang , Chen Chen , Qinyi Xu , Beibei Wang , Chenshu Wu , Hangfang Zhang , Chau-Wai Wong , David N. Claffey , Chun-I Chen , Hung-Quoc Duc Lai , Zhung-Han Wu , Min Wu , Yi Han , Oscar Chi-Lim Au , K. J. Ray Liu
摘要： Apparatus, systems and methods for detecting and monitoring fall-down actions and other transient motions are disclosed. In one example, a system for monitoring a transient motion in a venue is disclosed. The system comprises a transmitter, a receiver, and a transient motion monitor. The transmitter is located at a first position in the venue for transmitting a wireless signal through a wireless multipath channel impacted by the transient motion of an object in the venue. The receiver is located at a second position in the venue for: receiving the wireless signal through the wireless multipath channel, and obtaining a time series of channel information (CI) of the wireless multipath channel based on the wireless signal. The transient motion monitor is configured for: monitoring the transient motion based on the time series of CI, and triggering a response action based on the monitored transient motion.
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4.发明申请公开(公告)号：US20190178980A1
公开(公告)日：2019-06-13
申请号：US16200616
申请日：2018-11-26
发明人： Feng Zhang , Chen CHEN , Qinyi Xu , Beibei Wang , Chenshu Wu , Hangfang Zhang , Chau-Wai Wong , David N. Claffey , Chun-I Chen , Hung-Quoc Duc Lai , Zhung-Han Wu , Min Wu , Yi Han , Oscar Chi-Lim Au , K.J. Ray Liu
摘要： Methods, apparatus and systems for detecting and monitoring vital signs in real time are disclosed. In one example, a system for monitoring a repeating motion in a venue is disclosed. The system comprises a transmitter, a receiver, and a repeating motion monitor. The transmitter is located at a first position in the venue and configured for transmitting a wireless signal through a wireless multipath channel impacted by the repeating motion of an object in the venue. The receiver is located at a second position in the venue and configured for: receiving the wireless signal through the wireless multipath channel impacted by the repeating motion of the object in the venue, and obtaining a time series of channel information (CI) of the wireless multipath channel based on the wireless signal. The repeating motion monitor is configured for: monitoring a periodic characteristics of the repeating motion of the object based on the time series of CI.
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公开(公告)号：US20190097865A1
公开(公告)日：2019-03-28
申请号：US16203299
申请日：2018-11-28
发明人： Qinyi XU , Feng Zhang , Chen Chen , Beibei Wang , Chenshu Wu , Hangfang Zhang , Chau-Wai Wong , David N. Claffey , Chun-I Chen , Hung-Quoc Duc Lai , Zhung-Han Wu , Min Wu , Yi Han , Oscar Chi-Lim Au , K. J. Ray Liu
CPC分类号： H04L27/362 , H04B1/38 , H04W72/0413
摘要： Apparatus, systems and methods for recognizing and classifying events in a venue based on a wireless signal are disclosed. In one example, a disclosed system comprises a first transmitter, a second transmitter, at least one first receiver, at least one second receiver, and an event recognition engine, in the venue. The first transmitter transmits a training wireless signal through a wireless multipath channel impacted by a known event in the venue in a training time period associated with the known event. Each first receiver receives asynchronously the training wireless signal, and obtains, asynchronously based on the training wireless signal, at least one time series of training channel information of the wireless multipath channel between the first receiver and the first transmitter. The second transmitter transmits a current wireless signal through the wireless multipath channel impacted by a current event in a current time period associated with the current event. Each second receiver receives asynchronously the current wireless signal, and obtains, asynchronously based on the current wireless signal, at least one time series of current channel information of the wireless multipath channel between the second receiver and the second transmitter. The event recognition engine trains a classifier based on the training channel information; and apples the classifier to: classify the current channel information and associate the current event with at least one of: a known event, an unknown event and another event.
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公开(公告)号：US10374863B2
公开(公告)日：2019-08-06
申请号：US16203299
申请日：2018-11-28
发明人： Qinyi Xu , Feng Zhang , Chen Chen , Beibei Wang , Chenshu Wu , Hangfang Zhang , Chau-Wai Wong , David N. Claffey , Chun-I Chen , Hung-Quoc Duc Lai , Zhung-Han Wu , Min Wu , Yi Han , Oscar Chi-Lim Au , K. J. Ray Liu
摘要： Apparatus, systems and methods for recognizing and classifying events in a venue based on a wireless signal are disclosed. In one example, a disclosed system comprises a first transmitter, a second transmitter, at least one first receiver, at least one second receiver, and an event recognition engine, in the venue. The first transmitter transmits a training wireless signal through a wireless multipath channel impacted by a known event in the venue in a training time period associated with the known event. Each first receiver receives asynchronously the training wireless signal, and obtains, asynchronously based on the training wireless signal, at least one time series of training channel information of the wireless multipath channel between the first receiver and the first transmitter. The second transmitter transmits a current wireless signal through the wireless multipath channel impacted by a current event in a current time period associated with the current event. Each second receiver receives asynchronously the current wireless signal, and obtains, asynchronously based on the current wireless signal, at least one time series of current channel information of the wireless multipath channel between the second receiver and the second transmitter. The event recognition engine trains a classifier based on the training channel information; and apples the classifier to: classify the current channel information and associate the current event with at least one of: a known event, an unknown event and another event.
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