Vehicular power line communication system and slave apparatus

摘要

In a master apparatus, a reference device generates a reference signal, a power feeding signal generation portion divides or multiples a frequency of the reference signal to generate a power feeding signal, a first communication carrier generation portion divides or multiples the frequency of the reference signal to generate a first communication carrier, a communication signal generation portion generates a communication signal, and a superimposition portion superimposes the communication signal on the power feeding signal. In a slave apparatus, a separation portion separates the superimposition signal into a power feeding signal and a communication signal, a second communication carrier generation portion divides or multiples a frequency of the power feeding signal separated by the separation portion to generate a second communication carrier, and a modulation and demodulation portion modulates and demodulates a data communication signal to be communicated with the master apparatus using the second communication carrier.

主权项

1. A vehicular power line communication system comprising a master apparatus and a slave apparatus communicating with the master apparatus,
wherein the master apparatus includes:
a reference device generating a reference signal having a reference frequency;a power feeding signal generation portion dividing or multiplying a frequency of the reference signal from the reference device to generate a power feeding signal, the dividing or multiplying including dividing or multiplying by one;a first communication carrier generation portion dividing or multiplying a frequency of the reference signal from the reference device to generate a first communication carrier within a frequency band that is different from a frequency band for the power feeding signal;a communication signal generation portion generating a communication signal having a data communication frequency band using the first communication carrier; anda superimposition portion superimposing the communication signal from the communication signal generation portion on the power feeding signal from the power feeding signal generation portion to generate a superimposition signal, the superimposition portion transmitting the superimposition signal to the slave apparatus, wherein the slave apparatus includes:
a separation portion separating the superimposition signal from the superimposition portion into a power feeding signal having a frequency band for the power feeding signal generation portion and a communication signal having the data communication frequency band;a second communication carrier generation portion dividing or multiplying a frequency of the power feeding signal separated by the separation portion to generate a second communication carrier; anda modulation and demodulation portion modulating and demodulating a data communication signal to be communicated with the master apparatus using the second communication carrier.