METHOD AND SYSTEM FOR DETERMINING OBJECT MOTION BY CAPTURING MOTION DATA VIA RADIO FREQUENCY PHASE AND DIRECTION OF ARRIVAL DETECTION

• US 20150119073A1
• Filed: 10/17/2014
• Published: 04/30/2015
• Est. Priority Date: 10/20/2013
• Status: Active Grant

• Current Assignee: OAHU Group LLC
• Original Assignee: OAHU Group LLC
• Inventors: NAKATA, Robert Haruo, MOSTAFANEZHAD, Isar, Nakata, Robert Jeffrey
• Granted Patent: US 9,219,993 B2
• Time in Patent Office: Days
• US Class Current: 455/456.1
• CPC Class Codes: A61B 5/1114 Tracking parts of the body
• CPC Class Codes: A61B 5/1121 Determining geometric values, e.g. centre of rotation or angular range of movement
• CPC Class Codes: G06F 3/011 Arrangements for interaction with the human body, e.g. for user immersion in virtual reality blind teaching G09B21/00
• CPC Class Codes: H04B 1/385 Transceivers carried on the body, e.g. in helmets
• CPC Class Codes: H04W 4/026 using orientation information, e.g. compass
• CPC Class Codes: H04W 4/027 using movement velocity, acceleration information

Abstract

Methods and systems for determining the motion of an object by capturing motion data. The methods and systems may comprise the use of motion sensor tags adapted for disposal on an object, wherein motion data may be collected by said motion sensor tags and transmitted via radio frequency signal for processing of collected data comprising the motion data, direction of arrival data, amplitude data, and phase data. The same system may also be adapted to determine the position of a UAV or aircraft by intercepting radio frequency communications signals emanating from the object.

Claims

1. A method comprising:

collecting motion data comprising yaw data, pitch data, and/or roll data from a plurality of motion sensor tags disposed on an object comprising two or more segments, wherein at least one motion sensor tag is disposed on each segment;

transmitting the motion data via at least one radio frequency signal;

receiving the motion data via at least one antenna array, wherein receiving the motion data further provides direction of arrival data, amplitude data, and phase data from the radio frequency signal; and

processing a collected data set comprising the motion data, the direction of arrival data, the amplitude data, and the phase data, wherein said processing provides three-dimensional data comprising a position, an orientation, an acceleration, and/or a velocity of the object in a three-dimensional space.

3. The method according to claim 1, wherein the object comprises an animal.

4. The method according to claim 3, wherein the object comprises a human.

6. The method according to claim 1, wherein the two or more segments comprise body segments of an animal.

8. The method according to claim 1, wherein each motion sensor tag comprises an inertial measurement unit.

13. The method according to claim 1, wherein each motion sensor tag comprises at least one radio frequency transmitter for transmitting the motion data.

15. The method according to claim 13, wherein each motion sensor tag comprises a microprocessor.

16. The method according to claim 15, wherein the microprocessor is adapted to format the motion data by upconverting it to at least one radio frequency transmitter.

18. The method according to claim 13, wherein each motion sensor tag comprises the use of a local oscillator.

26. The method according to claim 1, wherein processing the collected data set comprises the use of a digital signal processor.

27. The method according to claim 26, wherein the digital signal processor comprises a sensor fusion algorithm that is implemented in the processing of the collected data set.

30. The method according to claim 26, wherein the digital signal processor is contained in a main processor unit.

32. The method according to claim 30, wherein the main processor unit further comprises a wireless connection.

33. The method according to claim 32, wherein the wireless connection comprises WiFi.

34. The method according to claim 32, further comprising transmitting the three-dimensional data via the wireless connection to a remote computing device.

35. The method according to claim 34, wherein the remote computing device displays the three-dimensional data.

36. The method according to claim 34, wherein the remote computing device comprises a virtual reality headset or virtual reality goggles.

37. The method according to claim 34, wherein the remote computing device is in communication with a virtual reality headset or virtual reality goggles.

44. The method according to claim 1, wherein processing the collected data set does not require the use of predetermined joint flexibility data, wherein the predetermined joint flexibility data comprises an algorithmic limitation that is not generated by one or more of the motion sensor tags.

48. The method according to claim 1, wherein processing the collected data set does not require the use of external contact data, wherein the external contact data comprises data relevant to external contacts of the object with predetermined surroundings of the object based on at least one of position, velocity, or acceleration of one or more segments.

2. (canceled)

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49. -101. (canceled)