Acceleration compensated inclinometer
1 Assignment
0 Petitions
Accused Products
Abstract
An inclinometer using a speedometer and a forward-looking accelerometer for measuring inclination angle.
62 Citations
30 Claims
-
1. (canceled)
-
2. An inclinometer, comprising:
-
a speedometer to determine a forward speed; an accelerometer to measure a forward acceleration; an incline angle calculator to calculate incline angle based on said measured acceleration and rate of change of said speed; a yaw rate sensor to measure a yaw angle rate; a yaw compensator to compensate said measured acceleration according to said yaw angle rate to determine a compensated acceleration; and
wherein;the incline angle calculator is configured to use said compensated acceleration with said speed rate to calculate said incline angle. - View Dependent Claims (3, 4, 5, 6)
-
-
7. An inclinometer, comprising:
-
a speedometer to determine a forward speed; an accelerometer to measure a forward acceleration; an incline angle calculator to calculate incline angle based on said measured acceleration and rate of change of said speed; a bias compensator to compensate said measured acceleration according to an accelerometer bias to determine a compensated acceleration, and wherein; the incline angle calculator is configured to use said compensated acceleration with said speed rate to calculate said incline angle. - View Dependent Claims (8, 9, 10, 11, 12, 13)
-
-
14. An inclinometer, comprising:
-
a speedometer to determine a forward speed; an accelerometer to measure a forward acceleration; an incline angle calculator to calculate incline angle based on said measured acceleration and rate of change of said speed; a GNSS receiver to determine a GNSS-based position and a three dimensional GNSS-based heading including a GNSS-based incline angle; a yaw rate sensor to measure a yaw angle rate; and
wherein;the incline angle calculator is configured to use said yaw angle rate, said GNSS-based position, said speed rate and said measured acceleration to determine a dead reckoning incline angle with a better accuracy than said GNSS-based upward heading. - View Dependent Claims (15)
-
-
16. (canceled)
-
17. A method for determining incline angle, comprising:
-
determining a forward speed; measuring a forward acceleration; calculating an incline angle based on said measured acceleration and a rate of change of said speed; measuring a yaw angle rate; compensating said measured acceleration according to said yaw angle rate for determining a compensated acceleration; and
wherein;calculating said incline angle includes using said compensated acceleration with said speed rate for calculating said incline angle. - View Dependent Claims (18, 19, 20, 21)
-
-
22. A method for determining incline angle, comprising:
-
determining a forward speed; measuring a forward acceleration; calculating an incline angle based on said measured acceleration and a rate of change of said speed; compensating said measured acceleration according to an accelerometer bias to provide a compensated acceleration; and
wherein;calculating said incline angle includes using said compensated acceleration with said speed rate for calculating said incline angle. - View Dependent Claims (23, 24, 25, 26, 27, 28)
-
-
29. A method for determining incline angle, comprising:
-
determining a forward speed; measuring a forward acceleration; calculating an incline angle based on said measured acceleration and a rate of change of said speed; determining a GNSS-based position and a three dimensional GNSS-based heading including a GNSS-based incline angle; measuring a yaw angle rate; and
wherein;calculating said incline angle includes using said yaw angle rate, said GNSS-based position, said speed rate and said measured acceleration for providing a dead reckoning incline angle having a better accuracy than said GNSS-based incline angle. - View Dependent Claims (30)
-
Specification