Method and device for the safety monitoring of a passage

The method involves securing a passage by a light grid with several light beams that run one above the other so that a safety function is released, if the light grid is interrupted, the release of the safety function is suppressed. Highest and lowest covered light beams (22b) of an object bit patter...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	PIRKL, KLAUS, GRABINGER, JOERG
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING DETECTING MASSES OR OBJECTS ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS GEOPHYSICS GRAVITATIONAL MEASUREMENTS HEATING LIGHTING MEASURING MECHANICAL ENGINEERING PHYSICS SAFETY DEVICES IN GENERAL TESTING THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	The method involves securing a passage by a light grid with several light beams that run one above the other so that a safety function is released, if the light grid is interrupted, the release of the safety function is suppressed. Highest and lowest covered light beams (22b) of an object bit pattern are evaluated, and successive changes of the light beams are compared with appropriate changes of a reference bit pattern on correspondence during traversing of an object e.g. vehicle body. An independent claim is also included for a device for safety monitoring of a passage.