Navy Tests Self-Powered Ocean Probe
June 30 2011
The Naval Research Laboratory (NRL) says it has developed an underwater sensor that can be dropped into the ocean, remain there for weeks or months and then rise to the surface -- all without electrical power.
The Zero-Power Ballast Control (ZPBC) system relies on microbial energy harvesting to enable autonomous underwater sensing with surfacing and reporting capabilities, according to an NRL release.
The prototype has two chambers: the top, dry chamber containing...
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