Measuring and testing – Speed – velocity – or acceleration – With distance registering means
Patent
1997-10-14
1999-09-21
Brock, Michael
Measuring and testing
Speed, velocity, or acceleration
With distance registering means
738654, 73510, 702160, G01P 1508
Patent
active
059556676
ABSTRACT:
A device comprised of at least a pair of accelerometers and a tilt sensor mounted in fixed relation to a datum defining plane (sole of a shoe) maybe used for extracting kinematic variables including linear and rotational acceleration, velocity and position. These variables may be resolved into a selected direction thereby permitting both relative and absolute kinematic quantities to be determined. The acceleration is determined using a small cluster of two mutually perpendicular accelerometers mounted on a shoe. Angular orientation of the foot may be determined by double integration of the foot's angular acceleration (which requires a third accelerometer substantially parallel to one of the two orthogonal accelerometers). The two orthogonal accelerations are then resolved into a net horizontal acceleration or other selected direction which may be integrated to find the foot velocity in the selected direction. The average of the foot velocity corresponds to the subject's gait speed.
REFERENCES:
patent: 4371945 (1983-02-01), Karr et al
patent: 4736312 (1988-04-01), Dassler et al.
patent: 5097706 (1992-03-01), Le Nouvel et al.
patent: 5583776 (1996-12-01), Levi et al.
patent: 5724265 (1998-03-01), Hutchings
Estimation of Speed & Incline of Walking Using Neural Networks Aminian et al. IEEE Transactions on Instrumentation & Measurement vol. 44 No. 3 Jun. 95.
Brock Michael
Governors of the University of Alberta
Kwok Helen C.
Rowley C. A.
LandOfFree
Motion analysis system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Motion analysis system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Motion analysis system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-82197