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:
Jul. 31, 2001
Filed:
Oct. 04, 1999
Salvatore A. Abbata, Webster, NY (US);
Robert Lewandowski, Webster, NY (US);
Xerox Corporation, Stamford, CT (US);
Abstract
A fault detection system for performing analog current analysis and diagnosis of power devices on digitally controlled buses. The fault detection system includes a field-installable bus interface having a current sensor on a ground return line. A bus controller connected to the bus interface then applies digital control signals and power to a system assembly via the bus interface such that individual power devices are selectively energized. A real time current profile of the selected power device over a selected period of time is determined. A fault determination network compares the real time current against a set of predetermined criteria and determines whether the selected power device is acceptable. The predetermined criteria beneficially includes information useful for determining degradation of the selected power device so that fault correction before failure is feasible.