Sunlight azimuth detector

The invention discloses a sunlight azimuth detector. The detector comprises a tubular black box and a tubular regulating tube, wherein one end of the regulating tube is positioned in one end of the black box, and the regulating tube and the black box are connected through a thread; the other end of the regulating tube is a closed end, a small hole is formed in the center of the end face of the closed end, and a film is arranged on the outer end face of the closed end; a coarse tuning light dependent resistor is arranged on the end face at one end, connected with the regulating tube, of the black box; a photoconductive resistance plate is fixed at the bottom end of the black box through a fixing pin; a fine tuning light dependent resistor is arranged on the photoconductive resistance plate; the small hole in the closed end of the regulating tube corresponds to the distribution center of the fine tuning light dependent resistor. An image (namely a light spot) of a light source is introduced into the black box according to the pin-hole imaging principle, the position of the light spot is determined through the photoconductive effect of the light dependent resistor on light, and the angle of the light source is subjected to analog calculation through a computer, so that the detection precision on the specific azimuth of sunlight is improved.