The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 13, 2001
Filed:
Mar. 11, 1999
Koji Matsuno, Tokyo, JP;
Munenori Matsuura, Tokyo, JP;
Fuji Jukogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
Recognizing curve geometry, judgement accuracy of an over speed condition is improved with minimal increase of calculation load, even when the road to an objective curve is not a straight line. The standard deceleration calculator calculates a standard deceleration from the road surface friction coefficient and road slope. The permissible access speed calculator calculates a permissible access speed from the permissible lateral acceleration based on road geometry and the road surface friction coefficient. The equivalent linear distance calculator calculates an equivalent linear distance, converting a winding part of a road to the objective curve into an equivalent straight line. The passing judgement device compares a required deceleration, which is determined based on the present vehicle speed, the permissible access speed and the equivalent linear distance, with a warning deceleration level and a forced deceleration level, which are calculated from the standard deceleration. According to the comparison result, the warning deceleration controller carries out a warning control through the display and a loudspeaker and forced deceleration control by the engine control unit, the transmission control unit and the brake control unit.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile