| 摘要 |
The invention describes a transmission system for transmitting digital information via a power supply network. The proposed transmission device comprises a generator ( 4 a) for generating a simulated digital wave-form carrying the digital information to be transmitted, wherein the simulated digital wave-form is built of predetermined harmonic frequencies of a signal frequency, and a high-voltage injector ( 4 b) to inject the generated simulated digital wave-form carrying the digital information into the power supply network. The proposed receiving device ( 6 ) comprises an analog detector ( 21 ) for detecting predetermined harmonic frequencies of a signal frequency, and a logic device ( 22 ) to output a logic signal corresponding to the output of the analog detector ( 21 ) as said digital information.
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