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:
Apr. 21, 2009
Filed:
Dec. 22, 2005
Scott E. Carpenter, Livonia, MI (US);
Richard L. Gillespie, Canton, MI (US);
Eugen Goebel, Dahlheim, DE;
Ingo Alfter, Sinzig, DE;
Scott E. Carpenter, Livonia, MI (US);
Richard L. Gillespie, Canton, MI (US);
Eugen Goebel, Dahlheim, DE;
Ingo Alfter, Sinzig, DE;
Kelsey-Hayes Company, Livonia, MI (US);
Abstract
The output of a wheel speed sensor is sampled at dithered time intervals and the samples used to construct a pair of histograms representing high and low sample values. A minimum voltage threshold is determined as a function of the output voltage associated with the dominate histogram value for the low sample values. The output voltage associated with the dominant histogram value for the high sample values is compared to the minimum voltage threshold to determine whether a potential sensor wiring problem is developing.