It was shown that the piezoelectric power generation can be boosted by using the synchronized switch power conditioning circuits. This letter reports a self-powered and self-sensing mechatronic design in substitute of the auxiliary electronics towards a compact and universal synchronized switch solution. The design criteria are derived based on the conceptual waveforms and a two-degree-of-freedom analytical model. Experimental result shows that, compared to the standard bridge rectifier interface, the mechatronic design leads to an extra 111% increase of generated power from the prototyped piezoelectric generator under the same deflection magnitude excitation. The proposed design has introduced a valuable physical insight of electromechanical synergy towards the improvement of piezoelectric power generation.

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In view of the severe signal attenuation and poor reliability in 10 kV power line carrier communication, an automatic networking method was proposed. This method select the best parent node through the size of SNR and Hops. Based on the process of single node joining the network, automatic networking of carrier node & dynamic routing & network reconfiguration can be developed through special communication protocol. Experiment results show that such advantages as less time consuming, higher communication quality, higher reliability and longer communication distance can be obtained with the method presented in lOkv power line carrier communication.