Patent · US Active

Sensor unit with safety system

US7667354B2 · kind B2 · utility

1Cited by

3References

24Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Dirk Graupner · Meerane, DE
Christian Hammer · Regensburg, DE
Werner Olbrich · Bad Hersfeld, DE

Key dates

Filing date	Nov 30, 2007
Grant date	Feb 23, 2010
Priority date	—
Expiry date	Mar 31, 2028

Classification

Technology area (CPC H)Electricity
CPC primaryH03K17/9502
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.