Charbonnages De France

Marc S Noel

A direct view remote control method, and a corresponding transmitter and receiver assembly, for rapid and reliable transmission of simultaneous orders to a works machine such as for mines and quarries. Orders from a driver are converted into binary signals; a sequential binary signal is elaborated therefrom so that each sequence comprises synchronization bits with a synchronization binary periodic signal and information bits occupied by a biphased encoded binary signal representative of said binary signals; Amplitude of carrier wave is modulated by said sequential binary signal so as to form a remote control signal to be transmitted; after reception thereof the sequential signal is restored and, through recognition therein of the synchronization signal, converted into appropriate electric signals for the machine.

Direct view remote control method for workings machine and transmitter

For transferring signals relative to an electric machine provided with a three-phase power supply cable with three phase conductors, there is applied a signal to be transmitted to a first point in the three-phase cable between anyone of the phase conductors of such cable and both of the other phase conductors taken conjointly, and a reception signal is picked up in another point in said cable between anyone of the phase conductors of such cable and both of the other phase conductors taken conjointly. Preferably, similar capacitors are associated with each of the phase conductors in the cable at each end thereof, a galvanic separation transformer being disposed between such conductors, and the transmitter and the receiver, respectively, and an inductance being disposed between such transformers and conductors.

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Oise, France

Marc S Noel