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:
May. 24, 2016
Filed:
Dec. 09, 2013
Applicant:
GM Global Technology Operations Llc, Detroit, MI (US);
Inventors:
Timothy D. Julson, Rochester Hills, MI (US);
Mark N. Howell, Rochester Hills, MI (US);
Shuo Huang, Warren, MI (US);
Assignee:
GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G07C 5/08 (2006.01); G01R 31/02 (2006.01); G01R 31/08 (2006.01); G01R 31/00 (2006.01);
U.S. Cl.
CPC ...
G07C 5/0808 (2013.01); G01R 31/02 (2013.01); G01R 31/026 (2013.01); G01R 31/08 (2013.01); G01R 31/083 (2013.01); G01R 31/007 (2013.01);
Abstract
A method for detecting and locating an open-wire fault within a vehicle subsystem, is provided. The method compares an output voltage of a low-pass filter circuit of the vehicle subsystem to a threshold voltage; detects that an open-wire fault exists in the vehicle subsystem when the output voltage is not less than the threshold voltage; determines a capacitance value of the low-pass filter circuit; and performs a lookup, using the capacitance value, to determine the location of the detected open wire fault.