Solar tracking angular deviation detector for linear array CCD (Charge Coupled Device)

Abstract

The invention discloses a solar tracking angular deviation detector for detecting errors of a tracking system in the photovoltaic power generation. By using the detector, the analytical value of the solar tracking angular deviation can be obtained, thereby reasonably and effectively evaluating the solar tracking precision of the traditional solar tracking angular deviation in the market in the photovoltaic power generation. The solar tracking precision is an important index of the solar tracking system and an important basis for measuring the quality of the solar tracking system. For achieving the aim, the solar tracking angular deviation can be measured by adopting the linear array CCD (Charge Coupled Device); an optical path and a signal processing circuit are designed; and the solar tracking angular deviation value can be determined according to the difference of sunlight incident angles and the change relationship of the imaging of the edge projection of a luminous seam on the CCD, mainly including the detection for the tracking angular deviation of an elevating angle and an azimuth angle; and finally, the detection result is subjected to the data processing and analyzing and is displayed by an intelligent display terminal, or can be transmitted to other processors through serial ports for further processing.

Description

technical field [0001] The invention relates to a linear array CCD sun tracking angle deviation detector, which belongs to the field of sun tracking angle deviation detection. Background technique [0002] The sun tracking angle deviation detector is mainly used in the sun tracking system, and the sun tracking methods used in the domestic and foreign sun tracking systems mainly include closed-loop active tracking of sensor sensing and open-loop passive tracking of sun apparent motion trajectory calculation, or The combination of the two methods, but because there is no corresponding instrument for quantitative detection of tracking angle deviation, the tracking accuracy is difficult to distinguish, and the pros and cons of the system cannot be judged. To detect the deviation of the sun tracking angle, a sensor with higher sun sensitivity and measurement stability and reliability than the tracking system should be selected first. At present, the sensors of sun tracking syste...

AI Technical Summary

Problems solved by technology

At present, the sensors of sun tracking systems at home and abroad generally use four-quadrant method silicon photocell sensors and position sensitive devices PSD. These components are easily affected by light intensity, and there is a large nonlinearity. There is no quantitative angle output information, which cannot be used as a good tracking angle deviation. detection sensor

If CMOS or area array CCD is used, using pinhole imaging and other methods, the structure is complex, the image imaging requirements are high, the image processing process is complicated and the cost is high, and it is mostly used in spacecraft attitude positioning and navigation systems, and it cannot be used as ordinary sun tracking systems. Angle deviation detection sensor

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