Abstract:In order to solve the energy supply problem of underwater low-power unmanned equipment, a method of capturing and collecting energy for vehicle in specific frequency bands is presented. The mathematical modeling and simulation analysis of the energy collector involved in the method are carried out to prove the theoretical feasibility of the method. Finally, based on the simulation results and design parameters, the experimental design of the system is carried out. It is found that when the underwater acoustic signal is 400Hz, 186dB, the maximum output voltage can be generated by using 30mm×40mm single-coated piezoelectric ceramics, which is 2.69V. The energy is collected and stored by an energy collector, and the maximum output power is 315nW, which proves that the method is feasible.