sensing microsystems can detect targets by obtaining specific feature information. This study expanded upon a previously developed underwater acoustic frequency domain characteristic hydrophone and developed an underwater characteristic information detection and wake-up piezoelectric micro-electromechanical systems sensing microsystem. It achieves target detection and recognition by detecting specific and combined characteristic information. A prototype of an underwater feature information detection wake-up sensing microsystem was validated in the study. The results indicate that the sensing microsystem can detect preset spectral characteristic information of different targets
thereby achieving the detection
awakening
and driving functions for specific targets or signals in underwater communication or detection system applications.
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