高速公路太阳能路灯的逐日系统设计

Design of Solar Energy Tracking System in Highway Solar Street Light

高速公路采用太阳能路灯是一种安全节能的解决方案,但是存在冬季白天光照不足,蓄电池蓄能偏少,导致夜间照明时间过短的问题,因此需要提高太阳能的利用率。如果太阳能集光板尽量保持与入射太阳光线垂直,可以明显提高发电效率。采用数字光强检测模块和步进电机及驱动模块,设计太阳能路灯集光板的逐日系统,实现对太阳光强的自动检测,使太阳光基本垂直入射到太阳能集光板上,提高了光伏转化效率,延长了照明时间。

Solar street light is a safe and energy-saving solution for highway.But in winter,the daytime light is insufficient and the storage capacity of the battery is too small,which leads to the problem that the lighting time at night is too short.The utilization rate of solar energy needs to be improved.If the solar collector plate is kept perpendicular to the incident solar light as much as possible,the power generation efficiency can be significantly improved.This paper designs the sunshine tracking system of the solar street light collecting plate with digital light intensity detection module,stepper motor and driver module,to realize the automatic detection of solar light intensity,then makes the sunlight mainly shine vertically on the solar collecting plate,and then improves photovoltaic conversion efficiency and extends lighting time.