Control system for automatic doors

Details Control system for automatic doors Control system for automatic doors

E - Fixed Constructions

05

F

E05F 15/10 (2006.01) G05B 19/042 (2006.01) H01H 47/00 (2006.01) E05F 15/14 (2006.01)

Patent

CA 2205551

A safety system the structure of which is based on a microcontroller (1) which carries out readings of the orders to open (LA) and to close (LC), (together with the speed (V) of the vehicle), a relay for the order to close (2) governed by a transistor (5), and a relay for opening (3) governed by a transistor (6), these two relays and their transistors (5) and (6) being powered by another transistor (7). The system carries out periodical supervision thanks to clock signals generated by the microcontroller (1) of the state of the switching transistors, checking that the orders given are definitive and coincide with the action that has been brought about, entering if this is not the case into a routine of internal stoppage of the microcontroller (1), shutting off motor traction, and bringing the relay contacts into a safe position which prevents the untimely opening of an automatic door. In the case of a fault arising in the microcontroller the relays are deactivated.

Système sûr comportant un microcontrôleur (1) qui effectue la lecture des ordres d'ouverture (LA) et de fermeture (LC), (et la vitesse (V) du mobile), un relais de fermeture (2) commandé par un transistor (5) et un relais d'ouverture (3) commandé par un transistor (6), les deux relais et les transistors (5, 6) étant alimentés par un autre transistor (7). Le système supervise périodiquement à l'aide de signaux d'horloge générés par le microcontrôleur (1) l'état des transistors de communication, vérifie que les ordres qui sont donnés sont définitifs et concordent avec l'action obtenue; dans le cas contraire, le système entre dans une routine d'arrêt interne du microcontrôleur (1), de coupure de la traction du moteur, et de positionnement des contacts des relais dans une position sûre qui évite l'ouverture intempestive d'une porte automatique. En cas de défaillance du microcontrôleur, les relais sont désactivés.

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