摘要:
The invention relates to a fastening device (23, 60, 30, 70) for the fastening of a housing (20) on a carrier plate (10), whereby the fastening device consists of a fastening means (23, 30) and a means (60, 70) for the expanding or spreading-open of the fastening means, the housing, the carrier plate, and the fastening means respectively comprise an opening (21, 13, 27, 34), the means for the spreading-open is introduced into the opening of the fastening means and remains there, and the fastening means grips behind the carrier plate in the opening thereof, and whereby the introducing of the fastening means and of the means for the spreading-open into the opening of the carrier plate occurs from the same side of the carrier plate, and the turning of the means for the spreading-open effectuates the fixing of the housing in radial and axial direction on the carrier plate.
摘要:
From a prescribed starting value, the emitting power of an obstacle detection beam increases or decreases according to a prescribed function at a prescribed rate. The received signal reflected from an obstacle is compared to a prescribed threshold. Once the received reflected power rises or falls to the threshold, the emitting power is not further increased or decreased respectively, but is maintained constant. Thereby, consumed and dissipated power is reduced, unnecessary excessive power use is avoided, and the detection range of the obstacle detection beam is adapted to the prevailing situation.