The invention discloses a
system for positioning a
heliostat. The
system comprises a
central receiver, the
heliostat, a two-dimensional
servo system platform, a CCD (
Charge Coupled Device)
detector, a
laser ranging device, a main controller, a
flash light emitter and a total reflecting
prism. The invention further discloses a method for positioning the
heliostat based on the system. The method comprises the following steps of: (1) adjusting the two-dimensional angle of the
laser ranging device by using the two-dimensional
servo system platform; (2) capturing the heliostat to be measured by using the
CCD detector and the
flash light emitter; (3) judging the size of the deviation between a
laser facula and the center point of the heliostat by using the
CCD detector, and controlling and rotating the two-dimensional
servo system platform to adjust laser, so that the laser can shot the center of the heliostat; (4) measuring the distance from a laser emission point to the center point of the heliostat by using the
laser ranging device; and (5) repeating the steps (1) to (4) to obtain the actual coordinates of the center point of the heliostat according to the distance from the
laser ranging device to the center point of the heliostat and the position coordinates of the
laser ranging device. According to the system and the method disclosed by the invention, the actual coordinates of the heliostat can be accurately calculated so as to accurately position the heliostat.