| 摘要 |
he invention relates to a solar radiation sensor composed of eleven photo-resistances (RO-R180) placed on a semi-circular base 2, spaced on an interval of 20 deg., and framed by black coloured cylinders 1. The precise sensor and a second sensor 7 of the same type are both placed at 90 deg. arrangement on the surface of a solar collector 5; the decrease of the photo-resistance value at some branch of the sensors 3 and the subsequent increase of the electric current transversing same branch, urge said sensors to indicate by mutually perpendicular angles the co-ordinates of the maximum solar radiation position in a given moment. The advantage of the invention is that, except for maximum radiation detection, the sensor in question can also define, with accuracy, the position of the solar radiation on the basis of the co-ordinates resulted from the arrangement of the sensors 6,7 and turn -via adequate mechanical parts- the solar collector 5 towards this position so that the entire surfaceof the sun collector may be heated by solar radiation. |
