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. 09, 2003
Filed:
Mar. 09, 2001
Rainer Maeckel, Koenigswinter, DE;
Marcus Kneifel, Schwieberdingen, DE;
Other;
Abstract
A device for identification of an external start is fitted in a vehicle which has an electrical on-board power supply system ( ) fed with an on-board power supply system voltage of about 12.5 V via a vehicle battery ( ). A negative pole ( ) of the battery ( ) is connected to a vehicle earth ( ). A monitoring unit ( ) is arranged between a positive pole ( ) of the battery ( ) and the on-board power supply system ( ). A conventional voltage sensor ( ) for detection of the on-board power supply system voltage, a similarly conventional current sensor ( ) for detection of the current flowing out of the battery, and a conventional temperature sensor ( ) for detection of the operating temperature of the battery ( ) are provided in the monitoring unit ( ). The main measurement variable is the on-board power supply system voltage; the battery current and the battery temperature represent auxiliary measurement variables in a monitoring algorithm. Furthermore, the monitoring unit ( ) contains a microcontroller ( ), which can identify a change in the on-board power supply system load via a CAN bus ( ). As is indicated by the dashed line ( ), the on-board power supply system load can also be detected directly via a controllable switch ( ).