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

Detecting motion effectively in a wide range of environments stays a problem. FIG. 1 illustrates an example house scenario, wherein Wi-Fi signals are scattered by objects, according to 1 embodiment of the current invention. FIG. 2 illustrates an instance object detection system, iTagPro support according to 1 embodiment of the present invention. FIG. Three illustrates an instance excessive degree block diagram of a movement tracing gadget, according to at least one embodiment of the current invention. FIG. 5 illustrates instance operations which may be performed to detect and track a shifting object, in accordance to one embodiment of the present invention. FIG. Four illustrates an example block diagram of a motion detection/tracing system, iTagPro locator according to at least one embodiment of the present invention. FIGS. 6A, 6B and 6C illustrate an example backscatter channel composed of three impulses, according to 1 embodiment of the current invention. FIGS. 7A by way of 7D sequentially illustrate intermediate outcomes of an estimation of the backscatter signal after performing the progressive self-interference cancellation, in accordance to at least one embodiment of the present invention.

FIGS. 8A, 8B and 8C illustrate instance backscatter elements obtained from a simulated hand motion in a typical indoor iTagPro website situation utilizing a Wireless tracing software program, in accordance to at least one embodiment of the present invention. FIGS. 9A and iTagPro support 9B illustrate an example utility of Hungarian algorithm for a subset of backscatter elements, in accordance to one embodiment of the present invention. FIGS. 10A and 10B illustrate an instance motion of a human hand, according to at least one embodiment of the current invention. FIG. 11 illustrates example operations which may be carried out by a machine to detect motion, in accordance with one embodiment of the current disclosure. FIG. 12 illustrates example operations that could be carried out by a system to hint movement of a moving system, ItagPro in accordance with one embodiment of the current disclosure. FIG. Thirteen is a simplified block diagram of an exemplary pc or knowledge processing system 1300 wherein parts of the movement tracing/detection device, could also be embodied.

WiFi transceivers detects and traces movement while WiFi transceivers are naturally transmitting packets for communication. Therefore, tracing performance may be piggybacked on existing WiFi indicators and use current WiFi spectrum without compromising communication or throughput. One embodiment is capable of tracing unbiased motion of a number of objects. One embodiment is capable of detecting and tracing motion of a number of people who independently perform sets of wonderful-grained movements. Therefore, according to 1 embodiment, radio frequency transceivers, comparable to WiFi transceivers can be utilized as accurate, occlusion resistant, excessive decision motion cameras capable of working in low mild or dark circumstances. FIG. 1 illustrates an example dwelling situation, during which radio alerts (e.g., WiFi signals) are scattered by objects, in accordance to at least one embodiment of the present invention. FIG. 1 illustrates an instance residence scenario, by which radio alerts (e.g., WiFi indicators) are scattered by objects, iTagPro support in accordance to 1 embodiment of the current invention.

WiFi AP is getting used for ItagPro accessing the Internet, which is for example a 4-antenna 802.11ac AP. AP receives backscatter reflections from a nearby reflector (e.g., the monitor), as effectively as the faraway reflectors, equivalent to palms of particular person B. Due to the difference in distance, as well as the fact that faraway backscatter signal has to replicate off or journey via partitions, iTagPro reviews there may be a substantial difference in sign power between the 2 backscatter elements. As described below, one embodiment offers a technique to capture and/or estimate weak backscatter indicators. As illustrated in FIG. 1 , the AP receives many backscatter reflections, out of which only a few correspond to reflections from the shifting objects. The reason being the good propagation properties of WiFi frequencies and iTagPro support the abundance of reflectors in indoor iTagPro support environments. Many objects similar to drywalls, tables, chair, laptops and floors replicate alerts at the 2.Four GHz and iTagPro support 5 GHz frequencies. The challenge is to identify the backscatter indicators which are reflected from the transferring objects amongst these multitude of backscatter components.

FIG. 2 illustrates an instance movement detection/tracing system, according to at least one embodiment. 202 and N transceivers 204 1 by way of 204 N . WiFi transceivers which can be able to tracing and tacking motion could also be disposed in a room. Each of the transceivers could transmit a radio frequency signal and receive backscatter signals from objects within the surroundings. 206 and a number of static objects 208 may be positioned in the surroundings that reflect the radio frequency alerts transmitted by the transceivers 204 1 by 204 N . 206 and ship the estimated parameters to server 202 for more processing. 202 isolates the backscatter generated by transferring objects, and traces the motion after combining the measurements from all the transceivers. FIG. Three illustrates an instance high-degree block diagram of a movement detection and/or tracing system 300 , in accordance to at least one embodiment. 302 , a backscatter isolating block 304 , and a motion detecting block 306 .