发明名称 |
VIBRATION MEASURING SYSTEM, VIBRATION MEASURING METHOD, AND COMPUTER PROGRAM |
摘要 |
There is provided a non-contact vibration measurement technique for a structure by continuously imaging the structure from a far distance using a PIV system and measuring vibration through image analysis. A vibration measurement method includes an imaging step for imaging an object separated by a long distance at a minute time interval by including a long focus optical system, an image processing step for comparing luminance pattern distributions at plural time instants obtained by the imaging step so as to measure a moving direction and a moving amount of a predetermined particle image in the object, a measuring result input step for inputting numerous measurement results of the moving direction and the moving amount of the predetermined particle image measured by the image processing step, a vibration frequency calculation step for calculating an acceleration vector from the imaging interval and performing Fourier transform thereon so as to calculate the vibration frequency of the object, and a vibration frequency output step for outputting the calculation result obtained by the vibration frequency calculation step.
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申请公布号 |
US2009262985(A1) |
申请公布日期 |
2009.10.22 |
申请号 |
US20060091754 |
申请日期 |
2006.10.26 |
申请人 |
THE TOKYO ELECTRIC POWER CO. INC. |
发明人 |
MORI MICHITSUGU;TEZUKA HIDEAKI |
分类号 |
G06K9/00 |
主分类号 |
G06K9/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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