| 摘要 |
PCT No. PCT/FR98/00464 Sec. 371 Date Jul. 20, 1999 Sec. 102(e) Date Jul. 20, 1999 PCT Filed Mar. 9, 1998 PCT Pub. No. WO98/40975 PCT Pub. Date Sep. 17, 1998The invention concerns a control device for the emission of carrier currents on a low voltage network, comprising a sensing module (1), by magnetic coupling, for generating from carrier currents detected high frequency signals (shdf), a local oscillator (2) generating a reference frequency radioelectic signal (fr) of a frequency comprised in the signal band (shdf) and a frequency-changing module (3) delivering an audio baseband signal (sbb) based on the (shdf) and (fr) signals. A demodulating circuit (4) delivers a detected low frequency signal (sdbf) based on the baseband signal (sbb) to a transducer circuit (50, 51) generating a sound signal controlling the current carrier frames. The invention is applicable to the implementation and management of current carrier installations on low voltage networks.
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