Synchronization of input data acquisition and camera capture of response for modal analysis
US11631185B1 · kind B1 · utility
1Cited by
2References
12Claims
0Family size
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Key dates
| Filing date | Aug 5, 2022 |
| Grant date | Apr 18, 2023 |
| Priority date | — |
| Expiry date | Aug 5, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30164
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for non-contact modal analysis uses an optical sensing device such as a video camera. Unlike traditional modal analysis, requiring accelerometers or force sensors to measure the modal characteristics of a structure, the inventive system uses pixel displacement measurements from the optical sensor to characterize the modal properties of the device under test. The input or reference signal is measured by an independent data acquisition system and is synchronized with the response motion captured in video recordings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.