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1引言有色金属板材的纵向厚度值和横向厚度值（板型）是评价板材质量的重要指标。为此轧板行业的生产厂家都十分关注板材轧制过程中，其厚度值的实时控制和监测。如何在恶劣的生产现场条件下，实施对板材厚度值进行连续、快速、无接触、非破坏的高精度测量，提高产品质量，增加
1 Introduction Non-ferrous sheet metal thickness value of the vertical and horizontal thickness (plate type) is to evaluate the quality of an important indicator plate. For this rolling industry manufacturers are very concerned about the plate rolling process, the thickness of the real-time control and monitoring. How to carry out continuous, rapid, non-contact and non-destructive high-precision measurement of sheet thickness value under the adverse production site conditions to improve product quality and increase