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:
Feb. 03, 2009
Filed:
Feb. 01, 2005
Joerg Brueckner, Sindelfingen, DE;
Dirk Foerstner, Stuttgart, DE;
Dirk Stockmann, Asperg, DE;
Joerg Winbermuehle, Leonberg, DE;
Matthias Illian, Gerlingen, DE;
Joerg Brueckner, Sindelfingen, DE;
Dirk Foerstner, Stuttgart, DE;
Dirk Stockmann, Asperg, DE;
Joerg Winbermuehle, Leonberg, DE;
Matthias Illian, Gerlingen, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
With devices and methods for reducing the contamination of a sensor, a sensor or sensor element—preferably a hot film air-mass meter—is deactivated when a software function integrated in the electronic control unit detects a possible contamination or a media carry-in. The sensor is deactivated using a high-side switch in the voltage supply or a low-side switch in the ground connection, wherein the media carry-in detection and the switch control are carried out by the control unit or an evaluation unit in the sensor. After the sensor is deactivated, a substitute signal is optionally generated that replaces the missing output signal of the sensor.