| 摘要 |
A sensor device including a source for electromagnetic radiation, a plurality of receivers for the electromagnetic radiation, and an electronics unit designed to transmit electromagnetic radiation by means of the source and to determine a distance which the electromagnetic radiation emitted from the source travels from the reflection surface of an object to respective receivers by evaluation of the delay time of the electromagnetic radiation and/or the phase of an oscillation modulated on to the electromagnetic radiation. The electronics unit for the detection of reflective objects, which are like floating parts and are distributed in three dimensions in a medium, is able to determine from the measured distances a first group of distances which fit a predetermined distribution, and, if there is more than one group member, to emit a signal which is associated with the detection of reflective objects which are like floating parts.
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