| Project/Area Number |
22560418
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Measurement engineering
|
|---|
| Research Institution | Toyohashi University of Technology |
|---|
Principal Investigator |
ZHANG Zhong 豊橋技術科学大学, 大学院・工学研究科, 教授 (50254579)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
IMAMURA Takashi 豊橋技術科学大学, 大学院・工学研究科, 助教 (10422809)
|
|---|
| Project Period (FY) |
2010 – 2012
|
| Project Status |
Completed (Fiscal Year 2012)
|
| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2012: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2011: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2010: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
|
|---|
| Keywords | アルゴリズム / 計測工学 / 信号処理 / 異常診断 / 実時間処理 |
|---|
| Research Abstract |
Until now, as the method of analyzing signal, a lot of frequency analysis methods have been used. The wavelet transform which has effectiveness in analysis for non-stationary signals is focused. This research aims to improve the following 2 points in Variable Filter Band Discrete Wavelet Transform (VFB-DWT) which is proposed by author; (1) solving the energy loss problem which makes reducing of signal power atthe specific frequency band in an analytical signal through the analysis process of the VFB-DWT , (2) constructing the assistance method to determine the appropriatethreshold value of VFB-DWT. Finally, improvement of analysis accuracy has been achieved through this research, and its effectiveness has been confirmed through the application in fetal cardiac signals analysis and in-vehicle road noise analysis.
|
