발명의명칭: 사물인터넷용 초저전력 유연압전 음성인식 센서(Low power piezoelectric voice recognition sensor used for IoT)
Int. CI: G10L 15/28 (2006.01.01) G01H 11/08 (2006.01.01)
출원번호(일자): 1020150081072 (2015.06.09)

해외출원번호: PCT/KR2016/006104, 

                   15/513,090

                   201680003750.1

                   US 2017/0299426

                   CN 107004415 A

: A piezoelectric voice recognition sensor according to the present invention is a flexible thin film 600; a piezoelectric material layer 300 laminated on the flexible thin film 600; and an electrode 500 stacked on the piezoelectric material layer 300, wherein the electrode 500 includes a plurality of frequency separation channels arranged in a line, and the plurality of frequency separation channels have a length is in a different state.

The present invention separates the sound sensed using a plurality of frequency separation channels made of a trapezoidal shape through the plurality of channels according to the frequency, and at the same time converts the separated audio signal from a mechanical vibration signal to an electrical signal through a piezoelectric element to make it aware