CCD用于光学三角法测量金属板厚.pdfVIP

32 ∀#199 8 19 2 LA SE R JO U RNAL ( V ol19 , N o 21998) CCD * 杨齐民 王 翊 钟丽云 宫爱玲 佘灿麟 张文碧 ( 云南工业大学激光研究所, 昆明 650051) : , CCD , , CCD , , , : , CCD , , CCD for optical triangle method to measure the depth of metal plate Yang Qimin Wang Yi Zhong Liyun Gong Ailing She Canling Zhang Wenbi ( Institute of Laser, Yunnan Polytechnic U niversity Kung m ing 650051) Abstract:T he laser spot of the oblique incidence to metal plate can be im aged on CCD by u se of lens W hile the m etal plate mov ing , the im ag e of spot w ill take place displacem ent By m easurem ent the displacem ent of im age, the metal plate displacem ent can be calculated T his m ethod can be also applied to m easure the depth of m etal plate Althoug h the variation of reflectance of m etal surf ace m ay influ ence m easuring result s, but it can be correct T he m et hod is nocontact and the sen sor isnt influ enced by m easur ing object and env ironment , so it can be used f or realtim e m easurem ent Key words:optical triang le m ethod, the displacem ent of m etal plate, the depth of m etal plate, laser scanning 1 引言 位 ( ) , , , CCD , , 1 CCD , , 1 , H e- N e 1! P, , Z0 , , a0 F CCD b0 Z d , 1 , Z1 , a1 2 线阵CCD 用于光学三角法测量 1997 7