Periodic pressure field measurement system and method based on superposed lifetime of pressure sensitive paint
US12262136B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 10, 2023 |
| Grant date | Mar 25, 2025 |
| Priority date | — |
| Expiry date | Aug 23, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/711
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Surface pressure measurements on rotating models are important for flow phenomenon identification, understanding flow mechanisms and model aerodynamic design. The disclosure discloses a periodic pressure field measurement system based on the superposed lifetime of pressure sensitive paint, including pressure sensitive paint, a pulse light source, a camera, a synchronizer and a computer. A lifetime superposition method is disclosed in the disclosure for measuring periodic pressure fields of pressure sensitive paint. The disclosure has the beneficial effects: the disclosure acquires, on the basis of a relationship between the fluorescence lifetime of the pressure sensitive paint and the pressure, fluorescence image pair sequence of the pressure sensitive paint with a high signal to noise ratio under a high-frequency pulsating pressure through the strobe light source and the low-frame-rate CCD camera, and obtains the global dynamic pressure distribution according to the measurement principle of the lifetime method, which can effectively reduce system errors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.