To make Internet of things（IoT） sensor nodes for long term ecological environment monitoring

a kind of wind-solar hybrid micro energy conversion system is designed for providing sensor nodes with continuous powers.Two control circuits of automatic light tracking and maximum power tracking are designed for maximum solar energy conversion.The low input voltage boosting circuit is designed to increase energy collection in the case of low wind speed.Working mode of power management of wind-solar hybrid system are analyzed

energy management theories of sensor nodes and two-axis motor continuous work are deduced.Experimental results show that light intensity can be detected accurately by the hybrid micro energy conversion systems

solar and wind energy are real time collected and stored at the same time

sensor nodes can continuously operate

collect datas and realizes real-time long distance wireless transmission

which meets the requirement of remote monitoring for forestry ecological environment.