Optically coupled remote control system

Details Optically coupled remote control system Optically coupled remote control system

G - Physics

05

D

342/2

G05D 3/00 (2006.01) G02B 6/35 (2006.01)

Patent

CA 1132685

ABSTRACT OF THE DISCLOSURE A system for remote control of an articulated loading arm, comprising a light source and a plurality of light actuated relays enclosed in an explosion-proof container, and a plurality of light-controlling switches mounted adjacent the loading arm. Light from the source is conveyed through a plurality of light pipes to the switches which either interrupt or transmit light to a plurality of optical fibers which are each connected between one of the switches and a corresponding one of the relays. The light pipes, switches and optical fibers can be used to control operation of the loading arm in a potentially explosive environment while the relays open valves and provide control of hydraulic fluid from the safety of the enclosed container. The controlled hydrau- lic fluid provides power to a plurality of hydraulic rams which operate the loading arm.

346484

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