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:
Sep. 03, 2002
Filed:
Jul. 28, 2000
Robert E. Costello, Shelby Township, MI (US);
Meritor Heavy Vehicle Technology, LLC, Troy, MI (US);
Abstract
A data logging system includes a data logging unit, a primary power source, an auxiliary power source and a controller. The controller detects whether the primary power source is available or unavailable and the time at which it became available or unavailable. From the time data the controller will then determine the total time the primary power source was unavailable to power the system. The controller adjusts or increases a predetermined auxiliary power source value by the auxiliary power source usage time period. Upon each occurrence in which the primary power source again becomes unavailable, the controller performs the same operations and further adjust or increases the previously reduced predetermined auxiliary power source value by the next auxiliary power source usage time period. Adjusting or increasing the predetermined auxiliary power source value will continue until a predetermined value is reached which triggers an alert. The alert indicates to an operator that the system requires service.