VEHICLE POWER LINE COMMUNICATION SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a vehicle power line communication system realizing enhanced electromagnetic induction coupling between a transmission side and a receiving side using a power line and enabling a power line communication in a high quality and high speed within a range of an error rate allowed by the system.SOLUTION: A power line communication system 1 for a vehicle includes a master 2 using a pair of twisted wire 4 formed in a loop shape with a core wire bonded at end as a power line and communication line, outputting a high frequency signal to the pair of twisted wire 4, and transmitting an electric power and a data modulation signal. Slaves 3A...3Z include a loop-shaped aperture antenna 3h receiving the data modulation signal through the pair of twisted wire 4 by electromagnetic induction coupling with electromagnetic field generated in the pair of twisted wire 4 according to an energizing current of the pair of twisted wire 4. The slaves 3A...3Z include an error rate monitor circuit 3g for monitoring an error rate of the data obtained by demodulating the received data modulation signal through the aperture antenna 3h.