Light spot calibration technique

• Main Authors: FENG WEI, LI YANG, YANG YONG, YU YANG, YANG JIE
• Format: Patent
• Language: Chinese; English
• Published: 03.04.2013
• Subjects: BASIC ELECTRIC ELEMENTS; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; CONTROLLING; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; PHYSICS; REGULATING; SEMICONDUCTOR DEVICES; SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

A light spot calibration technique relates to the technique of realizing calibration of the focusing light spot by arranging triple-junction gallium arsenide photovoltaic cells at the edge of the focusing light spot and detecting the current change of the dummy load to obtain accurate offset direction of the focusing light spot. With the technique, the fundamental problems of focusing accuracy reduction and tracking efficiency reduction of the existing tracking system caused by external factors of cloud covering, sun intensity change, building shielding, local surface reflection and the like can be calibrated; and the technical is the most effective technique for reducing the tracking accuracy error of the existing tracking system to zero and improving the tracking efficiency to 100%.