Movable barrier safety control

H - Electricity – 02 – P

Patent

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Details

H02P 7/00 (2006.01) E05F 15/00 (2006.01) G01V 8/12 (2006.01)

Patent

CA 2492592

Methods and apparatus for detecting obstructions in the path of a movable barrier are disclosed. Embodiments are included which advantageously combine edge sensing contact detectors (125, 123) and non-contact detectors such as photo eye detectors (165, 157). Relay logic (169) is also described for controlling the response of a movable barrier operator to input signals including input signals from contact type and non-contact obstruction detectors (165, 157).

L'invention concerne des procédés et un appareil de détection d'obstructions dans le chemin d'une barrière mobile. Des modes de réalisation sont prévus lesquels combinent avantageusement des détecteurs à contact détectant des bords et des détecteurs sans contact tels que des détecteurs photo-oculaires. Une logique à relais est également décrite pour commander la réponse d'un opérateur de barrière mobile à des signaux d'entrée comportant des signaux d'entrée de détecteurs d'obstruction du type à contact et sans contact.

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