A Hybrid Self-Powered Arbitrary Wave Motion Sensing System for Real-Time Wireless Marine Environment Monitoring Application
Self-powered arbitrary wave mornitoring is a hot research topic which aims to remove of the trouble associated with managing conventional power for continuous and real-time acquisition of wave information from the marine environment. Herein, an effective approach is presented that simultaneously generates power from arbitrary motion waves and can sense and wirelessly transmit the wave information without requiring and external supply. The hybridized ellipsoidal device inspired from an elliptical trajectroy of objects over shallow water waves, consist of six planar spiral coils arranged to cover the arbitrary direction of waves for power generation. Four magnetic force-actuated triboelectric nanogenerators (TENGs) pairs along four sides as the arbitrary direction self-powered wave motion sensors are integrated. Furthermore, all the required circuitry for signal processing and wireless transmission are integrally powered by the generated electricity to realize a self-sustained wireless marine environment monitoring system. The generator can deliver peak power of 106 and 44.8 mW (at 3Hz) along with major and minor axis motion directions. The self-powered sensors have excellent motion sensitivity ths the signals obtained from these sensors are utilized to acquire useful information related to the water waves which are very crucial parameters for real-time monitoring of the marine environment.
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