In order to improve tracking precision of double-axis sun-tracking system

an all-weather sun-tracking sensor is designed. The sensor is composed of shell

interface cable

nine photoelectric probes

inclination sensor SCA100T—D02 and corresponding circuits. The photoelectric probes detect position of the sun in sunny day

and in order to modify and eliminate mechanical error of sun-tracking system while tracking solar motion trajectory in cloudy and rainy day

SCA100T—D02 is used to realtime feedback inclination of solar panel after rotation. Through theoretical analysis and calculation

installation position of photosensitive resistor in probe is determined

and the sensor can sense incident sunlight whose altitude angle ra

nge of- 88. 83°

88. 83°. Test results show that the maximum relative error of the sensor for inclination detection is 3. 8 %

and can meet actual application requirement.