Reference ad [2.2] Design

Hand held measuring device for checking the brightnes of position lights.

Gigahertz Optik (Munich, Germany) develops metrology instruments for light sources. For this task it is essential to know the exact distance to the light source. For a hand held device NIELtech designed and implemented a stereoscopic procedure fulfilling the narrow assembly and other technical preconditions. The sensor consists fo two PDA-camera modules, which have an lateral distance of 140 mm. The accuracy of the measured distance is 0.1 m at a distance of 10 m. NIELtech designed the geometrical conditions, estimated the accuracy, developed the evaluation and calibration algorithms. Within the practical acceptance test it was shown, that the requiered measuring accuracy has been reached and even essential improved.