The application of Structural Health Monitoring (SHM) in international aviation has evolved from its initial focus on monitoring aircraft structural loads to encompassing damage detection, localization, and structural lifespan prediction. Traditional systems face challenges such as complex cable arrangements and limitations imposed by battery life and replacement difficulties. In response, this study explores a novel approach using vibration energy harvesting (VEH) to power helicopter SHM systems. By leveraging piezoelectric materials and VEH technology, we designed a miniature vibration energy harvester based on the key piezoelectric material Pb(Mg1/3Nb2/3)O3-PbTiO3 (PMN-PT). Finite element simulations and experimental validations demonstrate stable performance of the system under varying temperatures and accelerations, showcasing its potential reliability in practical applications. This research not only contributes technical insights for the development of Helicopter Health and Usage Monitoring Systems (HUMS) but also underscores the significant potential of vibration energy harvesting technology in enhancing energy sustainability.
The shooting and measurement of high-speed moving objects has always had a lot of use in scientific research and production, this demand has been promoted from the daytime use to the night, but the night vision camera are low frame rate, in order to use the existing equipment to achieve high-frequency image acquisition, this paper adopts a combination of multi-phase group sequentially triggered shooting, and nighttime supplemental light method, to achieve the frequency doubling technology of the night vision camera.
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