Research on Lighting Control System of CCD Camera in Unpacking Line of Tobacco Processing Workshop
HE Linyang
LIU Feng
TAN Huan
XIAO Bin
ZHANG Wei
ZHENG Yi
ZHUO Liang
Abstract：Aiming at the problem of reduced recognition accuracy caused by unstable lighting of the CCD camera in the unpacking line of the tobacco processing workshop,this study designs a PLC-based lighting closed-loop control technology.By constructing a real-time closed loop of"light collection-image analysis-compensation calculation-dynamic adjustment",combined with a multi-parameter image quality evaluation model and a light-image mapping algorithm,millisecond-level precise control of the light intensity and uniformity of the CCD camera in the unpacking line is achieved.The lighting system of the CCD camera in the unpacking line reduces the number of shutdowns caused by insufficient lighting from 22 times per month to 0,and improves the image recognition accuracy to 99.8%.This paper elaborates on the algorithm principle,system integration scheme,and industrial application effect of the closed-loop control,providing key technical support for the automatic processing of tobacco packages.
Keywords：CCD cameraclosed-loop controllight intensity collectionimage quality assessmentlight intensity
Publication Date：2025-12-25
Online Publishing Date：2026-01-08(First online date of this platform, not the publication date of the document)
Pages：4( 63-66 )