2/28/2023 0 Comments Open hardware monitor rus![]() Underwater imaging also supports global aquaculture food production, the world’s fastest-growing food sector, where it is used to detect diseases such as sea lice, monitor harmful algae blooms, and regulate fish feeding patterns to optimize growth 7, 8. Underwater imaging enables the discovery of new marine species and advances our understanding of the impact of climate change and human activity on the underwater world 1, 5, 6. Underwater images of marine animals, plants, oceanic basins, coral reefs, and marine debris are key to understanding marine environments and their impact on the global climate system 1– 4. The method’s self-sustaining nature makes it desirable for massive, continuous, and long-term ocean deployments with many applications including marine life discovery, submarine surveillance, and underwater climate change monitoring. We demonstrate wireless battery-free imaging of animals, plants, pollutants, and localization tags in enclosed and open-water environments. ![]() The cameras power up from harvested acoustic energy, capture color images using ultra-low-power active illumination and a monochrome image sensor, and communicate wirelessly at net-zero-power via acoustic backscatter. Here we describe underwater backscatter imaging, a method for scalable, real-time wireless imaging of underwater environments using fully-submerged battery-free cameras. Existing methods for underwater imaging are unsuitable for scalable, long-term, in situ observations because they require tethering for power and communication. ![]() ![]() Despite advances in underwater imaging, most of the ocean and marine organisms remain unobserved and undiscovered. Imaging underwater environments is of great importance to marine sciences, sustainability, climatology, defense, robotics, geology, space exploration, and food security. ![]()
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