Browse Prior Art Database

Method for vehicle potential rollover and avoidance compensation system

IP.com Disclosure Number: IPCOM000015867D
Original Publication Date: 2002-May-22
Included in the Prior Art Database: 2003-Jun-21
Document File: 4 page(s) / 47K

Publishing Venue

IBM

Abstract

Disclosed is an invention to provide increased personal safety through a real-time, consistent, automated, reliable method of analyzing the rollover potential for a vehicle, which also provides a driver awareness warning system and an automated response activation system that requires no driver action or, if necessary and correct, that overrides the driver's actions.

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Method for vehicle potential rollover and avoidance compensation system

Disclosed is an invention to provide increased personal safety through a real-time, consistent, automated, reliable method of analyzing the rollover potential for a vehicle, which also provides a driver awareness warning system and an automated response activation system that requires no driver action or, if necessary and correct, that overrides the driver's actions.

This invention provides additional improvements to previously patented prior art. The hazards of driving vehicles with a high center of gravity and the potential for these vehicles to exceed the stability limits of the vehicle are well documented. Vehicles with these characteristics have a higher than normal potential for being involved in a rollover accident, due to short wheel base and high center of gravity geometry of the vehicles. Prior art patents [1,2,3] all provide a method for detecting the potentiality for a vehicle to rollover. The current invention provides additional systems which further enhance safety.

Current systems typically incorporate only the use of braking to prevent oversteering resulting in a rollover. Since part of the problem involves the velocity of the vehicle at the time the swerving or skidding occurs, the present invention incorporates a fuller and more accurate model of the situation--swerving or skidding, speed, and the vehicle's center of gravity or roll point. The present invention acts on the brakes, reduces the amount of steering/swerving possible, reduces throttle, and alerts the driver.

The prior art provide methods for sensing, analyzing, and predicting the lateral acceleration of a vehicle. It is assumed that these inventions consist of a method for increasing the safety aspect for operating this type of vehicle via a system that would have scientific analysis data of the results from the manufacturer or NHTSA testing of the specific vehicle and an on board, real-time system to analyze the present state of the vehicle against that data to determine the potential of rollover for the vehicle. The on board system would use the analysis results to determine the exposure for the immediate situation and also be able to project somewhat short term future situations, should the present course of action continue.

In one piece of prior art, as the vehicle approaches the stability limits of the vehicle, the system provides a lighted dashboard indicator to the driver that notifies the driver that a potential rollover state is occurring. In the present invention's improvement on the prior art, an audible warning provides an instantaneous message to the driver that a potential hazard is occurring. This is an advantage to the dashboard display, since the lighted display indicator must be perceived visually, requiring the driver to redirect attention away from the road, view the display, comprehend its meaning, and then take action. In addition to lost reaction time, an ad...