Communications of the ACM
Sound-Powered Underwater Camera Could Dramatically Boost Climate Monitoring
The camera is autonomous and can run indefinitely, powered by sound from the ocean.
Credit: Adam Glanzman/MIT
Massachusetts Institute of Technology researchers used sound waves to power a wireless camera underwater, which could help to map the impact of climate change.
Sound waves traveling through water cause piezoelectric panels on the battery-free camera's housing to produce electricity that feeds into a supercapacitor, which powers the device.
The autonomous camera can capture high-resolution color photos even in low light, then transmit them to a receiver.
The researchers said the camera can run for weeks without human intervention.
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