A photoelectric conversion system for forest ecological environment sensing nodes is studied

using MSP430 as main control device

design two-axis tracking to realize position control

and use GPS module to realize auxiliary control; use shading technology to improve range of sensor; through mask

using method of shadow to increase measurement difference of sensor

improve control precision; by adopting method of maximum power point tracking for lithium battery charging

and through power management module distribute power resonably

improve utilization rate.Experimental results show that the designed control system can realize automatic tracking of light

improve photovoltaic conversion rate

realize uninterrupted work of sensor nodes

which has higher application value.