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. 23, 2010
Filed:
Nov. 30, 2007
Dirk Graupner, Meerane, DE;
Christian Hammer, Ebermannsdorf, DE;
Werner Olbrich, Mühlheim, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
A sensor unit is disclosed with a safety system for use with a signal generator, where at least one evaluation unit is provided for evaluating a signal from a sensor and for producing a first trigger signal based on the signal. In at least one embodiment, a more compact and less expensive version of a sensor unit is provided, which operates reliably under high safety demands. In at least one embodiment, this is achieved by a safety system which has a checking unit for checking the operation of the evaluation unit using a test signal. The test signal is processed by the evaluation unit in the same way as the signal from the sensor. The two-channel output is provided on the basis of a conclusiveness check in the checking unit.