Solar tracking apparatus and solar electric power generation system thereof

Abstract

The present invention provides a solar tracking apparatus for use with a power driving apparatus. The solar tracking apparatus includes: a memory unit for recording a first solar image; an image capturing unit for capturing a second solar image; and an processing unit for obtaining difference between the first solar image and the second solar image; wherein the processing unit activates the power driving apparatus in response to the difference. Furthermore, the present invention also provides a solar power generation system using the solar tracking apparatus. Besides the solar tracking apparatus, the solar power generation system also includes a solar panel; the power driving apparatus for adjusting the position of the solar panel, wherein the processing unit of the solar tracking apparatus activates the power driving apparatus based on the difference so that the solar panel is aligned with the sun to gather the solar energy of the sun.

1 . A solar tracking apparatus for use with a power driving apparatus, the solar tracking apparatus comprises:
 a memory unit for recording a first solar image;   an image capturing unit for capturing a second solar image; and   an processing unit for obtaining a difference between the first solar image and the second solar image;   wherein the processing unit activates the power driving apparatus in response to the difference.   
     
     
         2 . The solar tracking apparatus of  claim 1 , wherein the first solar image is a default reference solar image, and the second solar image is a solar image taken on the spot. 
     
     
         3 . The solar tracking apparatus of  claim 1 , wherein the processing unit further calculates a first solar center from the first solar image and a second solar center from the second solar image, and the difference is obtained by comparing the first solar center with the second solar center. 
     
     
         4 . The solar tracking apparatus of  claim 1 , wherein the difference is recorded in the memory unit to provide the processing unit to activate the power driving apparatus in advance. 
     
     
         5 . The solar tracking apparatus of  claim 1 , further comprising an optical unit for focusing the sun light onto the image capturing unit to form the second solar image. 
     
     
         6 . The solar tracking apparatus of  claim 5 , wherein the optical unit is a lens. 
     
     
         7 . The solar tracking apparatus of  claim 5 , wherein the optical unit is a wide-angle lens. 
     
     
         8 . The solar tracking apparatus of  claim 1 , wherein the image capturing unit is a charge coupled device (CCD) or a complementary metal-oxide semiconductor (CMOS). 
     
     
         9 . The solar tracking apparatus of  claim 1 , wherein the image capturing unit further captures a plurality of second solar images, and each second solar image is taken after a predetermined time interval. 
     
     
         10 . A solar power generation system includes:
 a solar panel;   a power driving apparatus for adjusting the solar panel; and   a solar tracking apparatus including:
 a memory unit for recording a first solar image; 
 an image capturing unit for capturing a second solar image; and 
 an processing unit for obtaining difference between the first solar image and the second solar image; 
 wherein the processing unit activates the power driving apparatus in response to the difference so that the solar panel can be aligned towards the sun to gather sun light. 
   
     
     
         11 . The system of  claim 10 , wherein the first solar image is a default reference solar image, and the second solar image is a solar image taken on the spot. 
     
     
         12 . The system of  claim 10 , wherein the processing unit further calculates a first solar center from the first solar image and a second solar center from the second solar image, and the difference is obtained by comparing the first solar center with the second solar center. 
     
     
         13 . The system of  claim 10 , wherein the difference is recorded in the memory unit to provide the processing unit to activate the power driving apparatus in advance. 
     
     
         14 . The system of  claim 10 , further comprising an optical unit for focusing the sun light onto the image capturing unit to form the second solar image. 
     
     
         15 . The system of  claim 14 , wherein the optical unit is a lens. 
     
     
         16 . The system of  claim 14 , wherein the optical unit is a wide-angle lens. 
     
     
         17 . The system of  claim 10 , wherein the image capturing unit is a charge coupled device (CCD) or a complementary metal-oxide semiconductor (CMOS). 
     
     
         18 . The system of  claim 10 , wherein the image capturing unit further captures a plurality of second solar images, and each second solar image is taken after a predetermined time interval.