Improved Design of Energy Supply Unit of WSN Node Based on Boost and BUCK Structure

The energy supply unit of WSN node based on solar cell-powered outdoor environment monitoring needs storage battery for energy buffering, thus resulting in the distribution balance problem among solar battery, storage battery charge and discharge, and load energy consumption power. Based on the analysis of sensor network characteristics and node composition, the overall design of energy supply unit of wireless sensor network node on the basis of self-harvesting solar energy is carried out in this paper. At the same time, the improved circuit structure based on Boost and BUCK structure was designed, the working mode and energy distribution mode of the circuit were analyzed, and the circuit and control flow were comprehensively analyzed. In order to verify the energy distribution, experiments were implemented for test. The results of compensating the conversion efficiency of the power converter show that the energy distribution efficiency is significantly improved.