System and method for predicting vehicle rollover using position tracking
First Claim
1. A method of predicting vehicle rollover with a processor configured to execute instructions stored in a memory, comprising the steps of:
- determining a center of gravity of a vehicle at rest;
continuously gathering and analyzing positional data of the vehicle to calculate distance between discrete positions and time difference between measurements;
determining an actual lateral acceleration of the vehicle in motion, further comprising the steps of;
determining a velocity of the vehicle based in part on said positional data;
determining a radius of curvature of a vehicle travel path based in part on said positional data; and
calculating said actual lateral acceleration of the vehicle based on the velocity of the vehicle and the radius of curvature of the vehicle travel path;
determining a maximum lateral acceleration of the vehicle, wherein the maximum lateral acceleration is the maximum amount of lateral acceleration of the vehicle permissible prior to the vehicle rolling over, and wherein the maximum lateral acceleration includes a gravity component of the vehicle; and
determining if the actual lateral acceleration is more than a predefined percentage of the maximum lateral acceleration.
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Abstract
A method of predicting vehicle rollover is provided to assist in preventing vehicle rollover. The method contains the steps of: determining a center of gravity of a vehicle; determining an actual lateral acceleration of the vehicle; determining a maximum lateral acceleration of the vehicle; and determining if the actual lateral acceleration is more than a predefined percentage of the maximum lateral acceleration. When the actual lateral acceleration is more than the predefined percentage of the maximum lateral acceleration, a warning is issued to the driver such that preventative measures can be taken to avoid a rollover.
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Citations
14 Claims
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1. A method of predicting vehicle rollover with a processor configured to execute instructions stored in a memory, comprising the steps of:
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determining a center of gravity of a vehicle at rest; continuously gathering and analyzing positional data of the vehicle to calculate distance between discrete positions and time difference between measurements; determining an actual lateral acceleration of the vehicle in motion, further comprising the steps of; determining a velocity of the vehicle based in part on said positional data; determining a radius of curvature of a vehicle travel path based in part on said positional data; and calculating said actual lateral acceleration of the vehicle based on the velocity of the vehicle and the radius of curvature of the vehicle travel path; determining a maximum lateral acceleration of the vehicle, wherein the maximum lateral acceleration is the maximum amount of lateral acceleration of the vehicle permissible prior to the vehicle rolling over, and wherein the maximum lateral acceleration includes a gravity component of the vehicle; and determining if the actual lateral acceleration is more than a predefined percentage of the maximum lateral acceleration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system for predicting vehicle rollover, comprising:
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a processor; and a memory configured to store logic for execution on the processor, comprising; logic configured to determine a center of gravity of a vehicle at rest; logic configured to continuously gather and analyze positional data of the vehicle to calculate distance between discrete positions and time difference between measurements; logic configured to determine an actual lateral acceleration of the vehicle in motion, wherein the determining actual lateral acceleration further comprises; determining a velocity of the vehicle based in part on said positional data; determining a radius of curvature of a vehicle travel path based in part on said positional data; and calculating said actual lateral acceleration of the vehicle based on the velocity of the vehicle and the radius of curvature of the vehicle travel path; logic configured to determine a maximum lateral acceleration of the vehicle, wherein the maximum lateral acceleration is the maximum amount of lateral acceleration permissible prior to the vehicle rolling over, and wherein the maximum lateral acceleration includes a gravity component of the vehicle; and logic configured to determine if the actual lateral acceleration is more than a predefined percentage of the maximum lateral acceleration. - View Dependent Claims (10, 11, 12, 13, 14)
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Specification