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:
Dec. 31, 2013
Filed:
Nov. 10, 2009
Alan L. Browne, Grosse Pointe, MI (US);
Shung H. Sung, Troy, MI (US);
Nancy L. Johnson, Northville, MI (US);
Jan H. Aase, Oakland Township, MI (US);
Alan L. Browne, Grosse Pointe, MI (US);
Shung H. Sung, Troy, MI (US);
Nancy L. Johnson, Northville, MI (US);
Jan H. Aase, Oakland Township, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A wet road surface detection system is provided for a vehicle driving on a road. The wet road surface detection system includes a sound sensing device coupled to the vehicle for capturing noise of the vehicle tires as the vehicle drives on a road surface. A processor processes sounds captured by the audible sensing device. The processor quantifies a variable sound level of the captured noise between a first frequency and a second frequency. The processor determines whether each quantified sound level between the first frequency and the second frequency is above a predetermined sound level threshold below the sound level at the first frequency. The processor determines that the vehicle is driving on a wet road surface in response to each quantified sound level between the first frequency and the second frequency being above a predetermined sound level threshold below the sound level at the first frequency.