US11209536B2 - Method and Apparatus for Tracking Motion Utilizing Radio Frequency Signals - Google Patents > 자유게시판

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Detecting motion efficiently in a wide range of environments stays a problem. FIG. 1 illustrates an example dwelling situation, wherein Wi-Fi signals are scattered by objects, according to 1 embodiment of the present invention. FIG. 2 illustrates an example object detection system, in accordance to one embodiment of the current invention. FIG. 3 illustrates an instance high degree block diagram of a movement tracing machine, according to at least one embodiment of the current invention. FIG. 5 illustrates example operations which may be performed to detect and track a transferring object, in accordance to at least one embodiment of the current invention. FIG. 4 illustrates an instance block diagram of a motion detection/tracing system, according to one embodiment of the current invention. FIGS. 6A, iTagPro technology 6B and 6C illustrate an instance backscatter channel composed of three impulses, according to at least one embodiment of the current invention. FIGS. 7A by means of 7D sequentially illustrate intermediate results of an estimation of the backscatter signal after performing the progressive self-interference cancellation, in accordance to one embodiment of the present invention.

FIGS. 8A, 8B and 8C illustrate instance backscatter elements obtained from a simulated hand movement in a typical indoor situation utilizing a Wireless tracing software, in accordance to one embodiment of the current invention. FIGS. 9A and 9B illustrate an instance software of Hungarian algorithm for a subset of backscatter parts, iTagPro USA in accordance to one embodiment of the current invention. FIGS. 10A and 10B illustrate an example motion of a human hand, in accordance to 1 embodiment of the current invention. FIG. Eleven illustrates example operations that could be performed by a iTagPro smart device to detect motion, in accordance with one embodiment of the present disclosure. FIG. 12 illustrates instance operations which may be carried out by a gadget to trace movement of a moving gadget, iTagPro official in accordance with one embodiment of the current disclosure. FIG. 13 is a simplified block diagram of an exemplary pc or knowledge processing system 1300 wherein portions of the movement tracing/detection system, could also be embodied.

WiFi transceivers detects and traces movement while WiFi transceivers are naturally transmitting packets for communication. Therefore, iTagPro smart device tracing functionality could also be piggybacked on current WiFi signals and use existing WiFi spectrum without compromising communication or throughput. One embodiment is capable of tracing independent movement of multiple objects. One embodiment is able to detecting and tracing movement of a number of people that independently perform sets of effective-grained movements. Therefore, in accordance to one embodiment, radio frequency transceivers, corresponding to WiFi transceivers can be utilized as accurate, occlusion resistant, high resolution motion cameras capable of working in low light or dark conditions. FIG. 1 illustrates an example house scenario, through which radio alerts (e.g., iTagPro smart device WiFi alerts) are scattered by objects, according to 1 embodiment of the current invention. FIG. 1 illustrates an instance home situation, buy itagpro by which radio signals (e.g., WiFi signals) are scattered by objects, according to 1 embodiment of the present invention.

WiFi AP is being used for accessing the Internet, which is for instance a 4-antenna 802.11ac AP. AP receives backscatter reflections from a nearby reflector (e.g., iTagPro smart device the monitor), as nicely because the faraway reflectors, reminiscent of fingers of person B. As a result of difference in distance, as well as the truth that faraway backscatter sign has to reflect off or iTagPro smart device journey by means of partitions, there is a considerable distinction in signal strength between the 2 backscatter elements. As described below, one embodiment supplies a method to seize and/or iTagPro smart device estimate weak backscatter alerts. As illustrated in FIG. 1 , the AP receives many backscatter reflections, out of which just a few correspond to reflections from the transferring objects. The reason is the great propagation properties of WiFi frequencies and the abundance of reflectors in indoor environments. Many objects equivalent to drywalls, tables, ItagPro chair, laptops and floors replicate indicators on the 2.Four GHz and 5 GHz frequencies. The challenge is to determine the backscatter indicators which are reflected from the transferring objects amongst these multitude of backscatter parts.

FIG. 2 illustrates an instance movement detection/tracing system, according to at least one embodiment. 202 and N transceivers 204 1 through 204 N . WiFi transceivers which might be able to tracing and tacking movement could also be disposed in a room. Each of the transceivers could transmit a radio frequency sign and obtain backscatter signals from objects within the surroundings. 206 and one or more static objects 208 may be located within the atmosphere that reflect the radio frequency alerts transmitted by the transceivers 204 1 through 204 N . 206 and send the estimated parameters to server 202 for more processing. 202 isolates the backscatter generated by moving objects, and traces the motion after combining the measurements from all of the transceivers. FIG. 3 illustrates an example high-level block diagram of a motion detection and/or tracing system 300 , according to at least one embodiment. 302 , a backscatter isolating block 304 , and a movement detecting block 306 .