DOOR MONITORING DEVICE

A device for monitoring a thoroughfare (4) and access area (5) of an automatically movable door (1), comprising distanced, radiation-emitting and radiation-detecting elements. At least one of the radiation-emitting or radiation-detecting elements (8,20) has a wide action range (9; 21), in comparison...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	KASPER, FERDINAND DR
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ANALOGOUS ARRANGEMENTS USING OTHER WAVES CHECKS FOR WINGS DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION FIXED CONSTRUCTIONS KEYS LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES LOCKS MEASURING PHYSICS RADIO DIRECTION-FINDING RADIO NAVIGATION SAFES TESTING WINDOW OR DOOR FITTINGS WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THEFUNCTIONING OF THE WING
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Beschreibung
Zusammenfassung:	A device for monitoring a thoroughfare (4) and access area (5) of an automatically movable door (1), comprising distanced, radiation-emitting and radiation-detecting elements. At least one of the radiation-emitting or radiation-detecting elements (8,20) has a wide action range (9; 21), in comparison with at least two opposing elements of a different type which have a narrow action range (11, 13; 16, 18). The main active direction of at least one element (10; 15) having a narrow action range (11; 16) is oriented towards the opposing element (8; 20) having a wide action range (9; 21) and the radiation detecting element (8; 15) reacts to an interruption in said radiation. The main active direction of at least one other element (12; 17) having a narrow action range (13; 18) is oriented towards the access area (5) and the radiation-detecting element (8; 17) sensing the access area (5) reacts to radiation reflection.