Scrambling code injection type power line carrier communication monitoring dynamic blocking device and method

The invention discloses a scrambling code injection type power line carrier communication monitoring dynamic blocking device and method. The system comprises a power line signal monitoring unit, a processing unit, a control logic unit, a frequency conversion scrambling code generator, a dynamic initial value resetting scrambling code generator, a natural noise signal generator, a first pre-nonlinear amplification unit, a second hybrid pre-nonlinear amplification unit, a first broadband power push-pull amplifier, a second broadband power push-pull amplifier, a first coupler and a second coupler. According to the invention, when a suspected carrier signal or other electromagnetic signals are monitored on the power line, the interference signal source is started to carry out full-frequency-domain, no-omission and high-safety scrambling code injection type interference on the whole power line carrier communication frequency band, and possible carrier communication is blocked; not only canthe power line be effecti