MOTION DETECTION DEVICES AND SYSTEMS
First Claim
7. A non-transitory computer-readable medium storing instructions executable by a processing resource to:
- determine spectrum parameters and time domain filter parameters of a mobile vehicle associated with a motion detection device using measurements from an inertial measurement unit (IMU);
determine window parameters using measurements from the IMU measured when the mobile vehicle is in motion and a sliding window motion estimation function;
determine IMU orientation parameters using measurements from the IMU;
filter IMU measurements using at least one time domain filter parameter; and
estimate motion of the mobile vehicle using the filtered IMU measurements, spectrum parameters, the IMU orientation parameters, the window parameters, and the sliding window motion estimation function.
1 Assignment
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Accused Products
Abstract
Motion detection devices and systems are described herein. One motion detection device includes an inertial measurement unit (IMU) configured to measure velocity, orientation, and gravitational forces of the motion detection device and a computing component. The computing component can be configured to determine spectrum parameters of a mobile vehicle associated with the motion detection device using measurements from the IMU, determine IMU orientation parameters using measurements from the IMU, and estimate motion of the mobile vehicle using the spectrum parameters, the IMU orientation parameters, measurements from the IMU, and a motion estimation function.
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Citations
20 Claims
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7. A non-transitory computer-readable medium storing instructions executable by a processing resource to:
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determine spectrum parameters and time domain filter parameters of a mobile vehicle associated with a motion detection device using measurements from an inertial measurement unit (IMU); determine window parameters using measurements from the IMU measured when the mobile vehicle is in motion and a sliding window motion estimation function; determine IMU orientation parameters using measurements from the IMU; filter IMU measurements using at least one time domain filter parameter; and estimate motion of the mobile vehicle using the filtered IMU measurements, spectrum parameters, the IMU orientation parameters, the window parameters, and the sliding window motion estimation function. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
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15. A motion detection system:
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an inertial measurement unit (IMU) configured to measure velocity, orientation, and gravitational forces of the motion detection system; a computing component configured to; determine spectrum parameters and time domain filter parameters of a mobile vehicle associated with the motion detection system using measurements from the IMU measured when the mobile vehicle is idle and in motion; determine window parameters using measurements from the IMU measured when the mobile vehicle is in motion and a sliding window motion estimation function; determine IMU orientation parameters using measurements from the IMU; filter IMU measurements using at least one time domain filter parameter; estimate a forward vector using the IMU orientation parameters; and estimate motion of the mobile vehicle using the filtered IMU measurements, spectrum parameters, window parameters, and the sliding window motion estimation function; and a user interface configured to provide a blank display on a screen in response to a determination that the mobile vehicle is in motion. - View Dependent Claims (1, 2, 3, 4, 5, 6, 16, 19, 17, 18, 20)
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19-1. The system of claim 15, wherein the computing component is configured to perform an exponentially weighted moving average (EWMA) filter process in response to resampling to 100 hertz.
Specification