Wireless sensor using nonlinear ultrasonic wave modulation technique비선형 초음파 변조 기술을 이용하는 구조물의 무선 진단 장치 및 그 장치를 이용하는 안전 진단 방법

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The present invention relates to the security diagnostics method of structure, it is characterised in that including:The step of applying all different frequency signals and vibrating structure;The step of by data signal is converted to by above-mentioned vibration and the response of caused above-mentioned structure;From above-mentioned data signal remove said frequencies signal higher harmonics response and linear response and synchronize demodulation, the step of so as to generate primary modulation signal;The frequency of the above-mentioned different frequency signal of consecutive variations and extract primary modulation signal, and according to frequency and combine primary modulation signal to generate the first the Sideband Spectrum (first sideband spec trogram) the step of;And according to above-mentioned first the Sideband Spectrum, judge that above-mentioned structure has flawless step, even if the power for being applied to the ultrasonic wave of structure also can critically determine whether damage, therefore can reduce power consumption significantly less than conventional art.
Assignee
KAIST
Country
CC (Cocos Islands)
Issue Date
2018-02-28
Application Date
2013-12-23
Application Number
201380076095.9
Registration Date
2018-02-28
Registration Number
105164493
URI
http://hdl.handle.net/10203/256718
Appears in Collection
CE-Patent(특허)
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