Patent ID: 7965018

Claim:
An acoustic sensor with a piezo-arrangement film for measuring an acoustic wave, the acoustic sensor comprising: a waveguide ( 10 ) including a vibrating membrane ( 13 ) for receiving the acoustic wave, an emitting membrane ( 14 ) for emitting the acoustic wave, and a propagation medium filled therein for propagating the acoustic wave received by the vibrating membrane ( 13 ); a compartment diaphragm ( 20 ) for comparting the waveguide ( 10 ) into an upper waveguide ( 11 ) and a lower waveguide ( 12 ); an omni-directional endpoint processing unit ( 50 ) formed at an end ( 15 ) of the waveguide ( 10 ) for absorbing the acoustic wave received by the vibrating membrane ( 13 ); and a plurality of piezoelectric sensors ( 30 ) formed on the compartment diaphragm ( 20 ) for detecting the acoustic wave.