| 摘要 |
The invention relates to a monitoring device (1) for spatial areas (2), comprising emitters (3), which emit radiation pulses that, in turn, are reflected by objects located within the spatial areas (2) to receivers (4). The receivers (4) are connected to a run time determining unit (9), with whose aid a distance image of an object within the spatial areas (2) can be generated. A selection unit (10) evaluates the distance images and generates a detection signal at an output (11) when predetermined distance values occur in the distance images.
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