A novel sensing technique based on capacitive response of microfluidic-based acoustic sensor (µBAS) for underwater acoustic communication

This work proposed a new concept of generating an Amplitude Shift Keying (ASK) signal meant for underwater communication. The technique is based on the different fluctuation of capacitance response of μBAS towards different burst parameter of piezoelectric transducer (PZT). Result shows that the number of burst cycle can be manipulated accordingly to produce a two level signal which could be representing the transmitting information. The maximum and minimum fluctuation of capacitive responses are found to be occurred at burst cycle of 3 and 5, respectively, and this pattern is seems to be repeating after each 5 cycle.