基于WSN节点能量补充的太阳能充电系统

Solar Charging System Based on WSN Node Energy Supplement

由于传统的电池供电方式满足不了WSN节点能量消耗的要求,设计了一种基于WSN节点能量补充的光伏发电系统。根据四区域光电传感器采集的光照强度信息,STM32最小系统驱动控制水平方向和垂直方向的舵机,使得太阳能电池板适时获得最大光照强度。实验结果表明,采用锂电池和电容混合储能方案时,在测试条件下,可为锂电池提供的0.1A左右的充电电流,且持续充电半小时后,锂电池电压可提高8.47%,能够延长无线传感器节点寿命。

Since the traditional battery power supply mode cannot meet the energy consumption requirements of WSN(Wireless Sensor Network),a photovoltaic power generation system based on WSN node energy supplement is designed.According to the information of illumination intensity collected by four regions photoelectric sensors,STM32 minimum system drives and controls the horizontal and vertical steering gear,which makes solar panels obtain maximum illumination intensity in time.When the lithium battery and capacitor hybrid energy storage scheme is adopted,the experimental results indicate that the charging current of 0.1A can be provided for the lithium battery under the test conditions.After continuous charging for half an hour,the voltage of the lithium battery can be increased by 8.47%,which can prolong the life of the wireless sensor node.