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An electrical control system for controlling one or more electrical devices includes a local control station and one or more remote control stations, each station including a transmitter and a receiver, the various stations being interconnected by optical fibers for transmission of information betwe

An electrical control system for controlling one or more electrical devices includes a local control station and one or more remote control stations, each station including a transmitter and a receiver, the various stations being interconnected by optical fibers for transmission of information between the stations. The local control station continuously encodes the status of the controlled electrical devices, and optically transmits this information to the various remote stations. Also, the receiver of each remote station is provided with means for determining when a fault in the local to remote station link occurs and determines whether it is receiving valid control information from the local station. An alarm signal is produced when the remote station receiver fails to receive control signal information.

대표청구항 ▼

An electrical control system for controlling the operation of one or more electrical devices comprising a local control station and at least one remote control station; each of said local control stations comprising transmitter means and receiver means, and each of said remote control stations compr

An electrical control system for controlling the operation of one or more electrical devices comprising a local control station and at least one remote control station; each of said local control stations comprising transmitter means and receiver means, and each of said remote control stations comprising transmitter means and receiver means; first optical fiber means interconnecting said remote station transmitter means and said local station receiver means, and second optical fiber means interconnecting said local station transmitter means with said remote station receiver means, said remote station transmitter means including command means for generating electrical command words, and first converting means for converting said electrical command words into corresponding light command words; said remote station transmitter means including first coupling means for coupling said light command words to the input end of said first optical fiber means; said local station receiver means including second coupling means for coupling the output end of said first optical fiber means to said local station receiver means and second converting means for converting said light command words into corresponding serial bit stream electrical command signals; decoder means for decoding said serial bit stream command signals into data command information words; a logic control unit comprising microprocessor means and erasable programmable memory means for processing said data command information words; driver circuit means for driving said electrical devices in accordance with said data command information; local station monitoring means for monitoring the operation of said electrical devices and producing corresponding electrical control information signals; third converting means for converting said electrical control information signals into corresponding light control information signals; third coupling means for coupling said light control information signals to the input end of said second optical fiber means; fourth coupling means for coupling the output end of said second optical fiber means to said remote station receiver means; and fourth converter means for converting said light control information signals into electrical control information signals.