3、124(2018)06–0017–05DishconcentratorsurfacedetectionbasedonthevisualmeasurementPENG Li, PENG Youduo, YAN Jian, CHENG Ziran, LIU Yongxiang(Hunan Provincial Key Laboratory of Health Maintenance for Mechanical Equipment, Hunan Universityof Science and Technology,
4、 Xiangtan 411201, China)Abstract: To ensure the power generation efficiency of solar thermal power generation system, theconcentrator mirror surface must meet the design precision requirements. This paper adopts the method ofmonocular vision measurement to measure th
5、e dish concentrator mirror. Relevant experimental measurementsystem is established, CCD camera is used to collect multi-breadth multi-position mirror and target images andMatlab software is used for camera calibration, stereo matching and a series of image processing
6、 to obtainthree-dimensional coordinate values of the mirror landmarks. The mirror model of the 800mm × 800mm dishconcentrator is obtained through the fitting of three-dimensional scatter data with the least square method.According to the difference values of coordina
7、tes of neighboring points on the concentrator mirror, it isestimated that the overall slope deviation of the mirror is 0.005 56 rad and the maximum slope deviation is0.027 26 rad on the edge of the mirror. The results show that the dish concentrator surface shape det
8、ectionsystem based on visual measurement can detect the mirror surface shape quickly and effectively.Keywords: dish concentrator; s