Solar energy collection system

Abstract

A solar energy collection system includes a solar energy collection device, a plurality of photoreceptors, a driving device, and a controller. The photoreceptors are arranged on different positions of the solar energy collection device. When one of the plurality of photoreceptors senses a beam of sunlight, the one of the plurality of photoreceptors outputs an electrical signal, the controller determines an included angle between the sunlight and the solar energy collection device according to the electrical signal and the position of the one of the plurality of photoreceptors. The controller controls the driving device to tilt the solar energy collection device to be always perpendicular to the beam of sunlight.

What is claimed is: 
     
         1 . A solar energy collection system, comprising:
 a solar energy collection device;   a plurality of photoreceptors arranged on different positions of the solar energy collection device;   a driving device; and   a controller electronically connected to the plurality of photoreceptors and the drive device;   wherein when one of the plurality of photoreceptors senses a beam of sunlight, the one of the plurality of photoreceptors outputs an electrical signal and the controller determines an included angle between the beam of sunlight and the solar energy collection device according to the electrical signal and the position of the one of the plurality of photoreceptors; the controller tilts the driving device according to the included angle, to drive the solar energy collection device to be perpendicular to the beam of sunlight.   
     
     
         2 . The solar energy collection system as claimed in  claim 1 , further comprising a sunlight collection box, wherein the sunlight collection box is horizontally positioned on the solar energy collection device. 
     
     
         3 . The solar energy collection system as claimed in  claim 2 , wherein the sunlight collection box is a hollow cylinder comprising a top wall, and a hole is defined on a center of the top wall. 
     
     
         4 . The solar energy collection system as claimed in  claim 3 , wherein a diameter of the hole is defined to allow a predetermined width of the beam of sunlight to pass. 
     
     
         5 . The solar energy collection system as claimed in  claim 3 , wherein the plurality of photoreceptors are received in the sunlight collection box, and are arranged on the solar energy collection device in a form of concentric circles. 
     
     
         6 . The solar energy collection system as claimed in  claim 5 , wherein the plurality of photoreceptors are configured at different included angles between the beam of sunlight and the solar energy collection device. 
     
     
         7 . The solar energy collection system as claimed in  claim 6 , wherein the photoreceptor opposite to the hole has an included angle between the beam of sunlight and the solar energy collection device of 90 degrees. 
     
     
         8 . The solar energy collection system as claimed in  claim 1 , wherein the driving device includes a first driving member, the first driving member drives the solar energy collection device to tilt in an east-west or west-east direction. 
     
     
         9 . The solar energy collection system as claimed in  claim 8 , wherein the driving device further includes a second driving member, the second driving member drives the solar energy collection device to tilt in a north-south or south-north direction. 
     
     
         10 . The solar energy collection system as claimed in  claim 1 , wherein the photoreceptor is a photoresistor or a charge coupled device (CCD).