| 摘要 |
<p>The invention relates to a sensor system with monitoring device which is characterized notably in that the sensor system comprises at least two redundant sensors (1, 2) for detecting a process-control or process-measurement value of a process and in that the monitoring device comprises a first subtractor (3) for generating a first difference between the sensor output signals, a first and a second differentiator (5, 6) for the time derivation of the sensor output signals, a second subtractor (7) for generating a second difference between the differentiated sensor output signals and an error analysis unit (4) by means of which the first and second differences are each compared with a predetermined first and second threshold value and an error message is generated if at least one of said differences exceeds the corresponding threshold value.</p> |
