Patent ID: 7657395

Claim:
A system for detecting inclination of an object in motion, the object having a forward-aft axis, without compensating for any acceleration of the object, the system comprising: a multi-axis acceleration sensing device that is fixedly attached to the object such that each sensing axis of the multi-axis acceleration sensing device is co-planar with and oriented 45 degrees from the forward-aft axis of the object and the co-planar sensing axes are orthogonal to one another; and means for determining the inclination of the object, wherein the inclination of the object (α) is determined using the equation: α = sin - 1 ( a x + a y 2 ⁢ g ) - 45 ⁢ ° , in which g is the acceleration due to gravity, a x is a sensed acceleration along a first sensing, x-axis and a y is a sensed acceleration along a second sensing, y-axis.