Method for checking the working condition of an optically operated proximity switch

PCT No. PCT/FI92/00262 Sec. 371 Date Mar. 30, 1994 Sec. 102(e) Date Mar. 30, 1994 PCT Filed Sep. 30, 1992 PCT Pub. No. WO93/07510 PCT Pub. Date Apr. 15, 1993.The invention relates to a method in an optically operated proximity switch, particularly for checking the working condition of the proximity...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	MALM, TIMO, HELLSTEN, MARKKU, HEINONEN, ILKKA
Format:	Patent
Sprache:	eng
Schlagworte:	ANALOGOUS ARRANGEMENTS USING OTHER WAVES DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MEASURING PHYSICS RADIO DIRECTION-FINDING RADIO NAVIGATION TESTING
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	PCT No. PCT/FI92/00262 Sec. 371 Date Mar. 30, 1994 Sec. 102(e) Date Mar. 30, 1994 PCT Filed Sep. 30, 1992 PCT Pub. No. WO93/07510 PCT Pub. Date Apr. 15, 1993.The invention relates to a method in an optically operated proximity switch, particularly for checking the working condition of the proximity switch. Accordingly to the method, the proximity switch is fitted with a control circuit which is switched on at certain intervals. The control circuit comprises, in addition to a coupling, a controlling receiver circuit and a controlling transmitter circuit, whereby the working condition of the transmitter and the receiver is checked. The proximity switch further comprises reflecting device, whereby the control pulse is reflected to the receiver.