SOLAR POSITION TRACKING ACCURACY MEASUREMENT SYSTEM BASED ON OPTICAL LENS

摘要

The present invention relates to a solar position tracking accuracy measurement system based on an optical lens, by which the solar position tracking accuracy of a tracker can be effectively analyzed and detected in real-time by using a technique on the basis of an astronomical analysis on the trajectory of the sun through an accurate measurement based on an optical lens, thereby establishing the reproducibility of a physical measurement method, calculating an error angle according to the vertical incidence of solar light and minimizing physical errors.

主权项

1. A solar position tracking accuracy measurement system based on an optical lens comprising:
an optical lens means comprising
an eyepiece for refracting a solar light incident thereon,a first convex lens formed on a rear side of the eyepiece,a second convex lens formed on a rear side of the first convex lens,a third lens is formed on a rear side of the second convex lens, anda fourth convex lens formed at a rear side of the third lens; and a solar position measuring means comprising
a sensing unit for forming a target surface of a matrix structure using a photosensitive device,a coordinate information detection unit for detecting a coordinate of a cell having a changed electrical signal when a focal area is formed on an arbitrary point,a coordinate information transmission unit for transmitting the generated coordinate information to a display unit,the display unit for displaying the coordinate information received from the coordinate information transmission unit, andan error rate calculating unit for calculating an error rate of a solar position tracker, wherein an output angle is larger than an incident angle by means of the optical lens means, wherein the photosensitive device is any one of photo sensors such as a solar cell, a CdS, a photodiode and a phototransistor, wherein the first convex lens, the second convex lens, and the fourth convex lens use an ultra-low dispersion glass (apochromatic lens) so as to reduce an aberration thereof, and wherein the solar position measuring means finds and detects an error of an incident angle by increasing a cosine pointing error using an off-axis ray of the lens and measures the error of the solar position tracking apparatus by removing an inaccuracy caused by a dispersion of the sunlight and enlarging the cosine error angel.