Underwater generator for submersible sensors

The present work shows the development of a linear electromagnetic generator (LEG) for applications in marine and fluvial sensors. The LEG was submitted to tests with small oscillating frequencies of 0.1-0.4 Hz, and the output power obtained for these frequencies has allowed to supply energy to at least 6 sensors with a total consumed power of 5.76mW or to charge the batteries when the sensors are in a sleep mode. As a result, it is possible to extend the operation time and reduce the logistic costs for sea or river sensors applications, by using the proposed micro underwater generator.