Speedometer for a moving sportsman
First Claim
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1. An accelerometer based movement system, comprising:
 a first accelerometer constructed and arranged to generate motion signals in response to the forward acceleration of a moving sportsman;
a second accelerometer constructed and arranged to generate gravity signals responsive to force of gravity; and
a processor for processing the motion signals to determine at least one of speed and distance traveled of the moving sportsman while compensating the motion signals based on the gravity signals.
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Abstract
The invention detects loft time and/or speed of a vehicle and/or person during activities of moving and jumping. A loft sensor detects leaving the ground and returning to the ground. A microprocessor subsystem converts the sensed information to determine a loft time. A display shows the recorded loft time to a user of the system. A speed sensor can detect speed for selective display to the user, and height may also be determined during airtime.
195 Citations
27 Claims

1. An accelerometer based movement system, comprising:

a first accelerometer constructed and arranged to generate motion signals in response to the forward acceleration of a moving sportsman;
a second accelerometer constructed and arranged to generate gravity signals responsive to force of gravity; and
a processor for processing the motion signals to determine at least one of speed and distance traveled of the moving sportsman while compensating the motion signals based on the gravity signals.  View Dependent Claims (2, 3, 4, 5, 6, 7)


8. An accelerometer based movement system, comprising:

a first accelerometer constructed and arranged to generate motion signals in response to the forward acceleration of a moving sportsman;
a second accelerometer constructed and arranged to generate centripetal acceleration signals responsive to centripetal acceleration of the moving sportsman; and
a processor for processing the motion signals to determine at least one of speed and distance traveled of the moving sportsman while compensating the motion signals based on the centripetal acceleration signals.


9. A method for determining speed of a moving sportsman, comprising the steps of:

sensing acceleration along a first axis and responsive to forward movement of the moving sportsman along a direction;
sensing acceleration in a second axis oriented substantially perpendicular to the first axis;
processing data representative of the accelerations to compensate for angular orientation of at least one of the first and second axes relative to the direction;
processing data representative of the accelerations to determine at least one of speed and distance traveled along the direction; and
determining airtime of the moving sportsman based upon at least one of the accelerations.


10. A method for determining speed of a moving sportsman, comprising the steps of:

sensing acceleration along a first axis and responsive to forward movement of the moving sportsman along a direction;
sensing acceleration in a second axis oriented substantially perpendicular to the first axis;
processing data representative of the accelerations to compensate for angular orientation of at least one of the first and second axes relative to the direction;
processing data representative of the accelerations to determine at least one of speed and distance traveled along the direction; and
processing data representative of the accelerations to determine height of a jump of the moving sportsman.


11. A method for determining speed of a moving sportsman, comprising the steps of:

sensing acceleration along a first axis and responsive to forward movement of the moving sportsman along a direction;
sensing acceleration in a second axis oriented substantially perpendicular to the first axis;
processing data representative of the accelerations to compensate for angular orientation of at least one of the first and second axes relative to the direction;
processing data representative of the accelerations to determine at least one of speed and distance traveled along the direction;
determining airtime of the moving sportsman based upon at least one of the accelerations; and
determining a height of the moving sportsman off of ground during the airtime.


12. A method for determining speed of a moving sportsman, comprising the steps of:

sensing acceleration along a first axis and responsive to forward movement of the moving sportsman along a direction;
sensing acceleration in a second axis oriented substantially perpendicular to the first axis;
processing data representative of the accelerations to compensate for angular orientation of at least one of the first and second axes relative to the direction;
processing data representative of the accelerations to determine at least one of speed and distance traveled along the direction; and
displaying at least one of the speed and the distance traveled to the moving sportsman via a liquid crystal display attached to the moving sportsman.


13. A method for determining speed of a moving sportsman, comprising the steps of:

sensing acceleration along a first axis and responsive to forward movement of the moving sportsman along a direction;
sensing acceleration in a second axis oriented substantially perpendicular to the first axis;
processing data representative of the accelerations to compensate for angular orientation of at least one of the first and second axes relative to the direction;
processing data representative of the accelerations to determine at least one of speed and distance traveled along the direction; and
storing data representative of maximum speed in memory attached to the moving sportsman.


14. A method for determining speed of a moving sportsman, comprising the steps of:

sensing acceleration along a first axis and responsive to forward movement of the moving sportsman along a direction;
sensing acceleration in a second axis oriented substantially perpendicular to the first axis;
processing data representative of the accelerations to compensate for angular orientation of at least one of the first and second axes relative to the direction;
processing data representative of the accelerations to determine at least one of speed and distance traveled along the direction; and
storing data representative of distance traveled in memory attached to the moving sportsman.


15. A method for determining speed of a moving sportsman, comprising the steps of:

sensing acceleration along a first axis and responsive to forward movement of the moving sportsman along a direction;
sensing acceleration in a second axis oriented substantially perpendicular to the first axis;
processing data representative of the accelerations to compensate for angular orientation of at least one of the first and second axes relative to the direction;
processing data representative of the accelerations to determine at least one of speed and distance traveled along the direction;
determining airtime of the moving sportsman, based upon at least one of the accelerations; and
displaying the airtime to the moving sportsman.


16. A method for determining speed of a moving sportsman, comprising the steps of:

sensing acceleration along a first axis and responsive to forward movement of the moving sportsman along a direction;
sensing acceleration in a second axis oriented substantially perpendicular to the first axis;
processing data representative of the accelerations to compensate for angular orientation of at least one of the first and second axes relative to the direction;
processing data representative of the accelerations to determine at least one of speed and distance traveled along the direction;
processing data representative of the accelerations to determine height of a jump of the moving sportsman; and
displaying the height jumped to the moving sportsman.


17. A method for determining speed of a moving sportsman, comprising the steps of:

sensing acceleration along a first axis and responsive to forward movement of the moving sportsman along a direction;
sensing acceleration in a second axis oriented substantially perpendicular to the first axis;
processing data representative of the accelerations to compensate for angular orientation of at least one of the first and second axes relative to the direction;
processing data representative of the accelerations to determine at least one of speed and distance traveled along the direction; and
displaying one or more successive records of speed to the moving sportsman.


18. A method for determining speed of a moving sportsman, comprising the steps of:

sensing acceleration along a first axis and responsive to forward movement of the moving sportsman along a direction;
sensing acceleration in a second axis oriented substantially perpendicular to the first axis;
processing data representative of the accelerations to compensate for angular orientation of at least one of the first and second axes relative to the direction;
processing data representative of the accelerations to determine at least one of speed and distance traveled along the direction; and
averaging speed for display to the moving sportsman.


19. A method for determining speed of a moving sportsman, comprising the steps of:

attaching an altimeter to the moving sportsman;
determining an angle of descent from the altimeter and corresponding to movement of the moving sportsman down a sloped surface;
processing, over time, altitude data from the altimeter and relative to, over time, the angle of descent to determine speed of the moving sportsman.  View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27)

1 Specification