Navigation Of An ROV By Non-Hybrid Cable Using FAMPLC Technique

Alireza Nazem, Mohd Rizal Arshad

Abstract


Non-hybrid cable for underwater application is a downgraded cable since there is no fibre layer in the shield. The optical communication technique in underwater applications necessitates the need of multi plies of the fibre layers that result in a massive cable size, serious maintenance and high cost. The novel technique of FAMPLC introduces a combined large signal modulation of the supplying voltage frequency and the consumer current amplitude over the entire power line. This technique requires a server inclusive of an embedded DC to AC bridge inverter in one end and a dummy load used for current modulation in another end. The transmitted data are extracted from the frequency and the duty cycle of the pulse trains. The technique allows real time full-duplex power-line communication. The wait-state and handshaking sequences between send and receive intervals are also eliminated in this technique. Nevertheless, user needs to define a lookup Table for desired commands and data processing. In this paper the noise handling and a self-calibration method is also discussed.

Keywords


FAMPLC; non-hybrid cable; voltage frequency modulation; current amplitude modulation; power-line communication

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References


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