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Patent Searching and Data


Title:
ULTRA-LOW POWER FLEXIBLE PIEZOELECTRIC AUDIO RECOGNITION SENSOR FOR INTERNET OF THINGS
Document Type and Number:
WIPO Patent Application WO/2016/200165
Kind Code:
A1
Abstract:
A piezoelectric audio recognition sensor according to the present invention comprises: a flexible thin film (600); a piezoelectric material layer (300) stacked on the flexible thin film (600); and an electrode (500) stacked on the piezoelectric material layer (300). The electrode (500) includes a plurality of frequency separation channels disposed in series, and the plurality of frequency separation channels have respectively different lengths. The present invention uses the plurality of frequency separation channels formed in a trapezoidal configuration to separate detected audio through the plurality of channels according to frequency and simultaneously convert the separated audio signals from mechanical vibration signals to electrical signals and recognize same through a piezoelectric sensor.

Inventors:
LEE KEON JAE (KR)
HAN JAE HYUN (KR)
JOE DANIEL (KR)
Application Number:
PCT/KR2016/006104
Publication Date:
December 15, 2016
Filing Date:
June 09, 2016
Export Citation:
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Assignee:
KOREA ADVANCED INST SCI & TECH (KR)
International Classes:
G10L15/28; G01H11/08
Foreign References:
KR101200355B12012-11-12
JP2009101166A2009-05-14
KR20120099036A2012-09-06
US20040075363A12004-04-22
Other References:
PARK, KWI - IL ET AL.: "High-efficient, Flexible Piezoelectric PZT Thin Film Nanogenerator on Plastic Substrates", ADVANCED MATERIALS, vol. 26, no. 16, April 2014 (2014-04-01), pages 2514 - 2520, XP055335509
LEE, HYUN SOO ET AL.: "Flexible Inorganic Piezoelectric Acoustic Nanosensors for Biomimetic Artificial Hair Cells", ADVANCED FUNCTIONAL MATERIALS, vol. 24, no. 44, 26 November 2014 (2014-11-26), pages 6914 - 6921, XP055335510
Attorney, Agent or Firm:
DAHAI INTERNATIONAL PATENT & LAW FIRM (KR)
특허법인 다해 (KR)
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