基于线结构光的圆柱型筛框缝宽尺寸检测系统研究  

Research on Measurement System of Cylindrical Screen Frame Slit Width Based on Line Structured Light

作　　者：史腾 路绳方 岳佳慧 王彬 王海彬 盛柯俊 唐群博 钱予阳 SHI Teng;LU Shengfang;YUE Jiahui;WANG Bin;WANG Haibin;SHENG Kejun;TANG Qunbo;QIAN Yuyang(Artificial Intelligence Industrial Technology Research Institute,Engineering,Nanjing Institute of Technology,Nanjing 211167,China;Nanjing Chervon Industry Co.Ltd.,Nanjing 211106,China;School of Mechanical Engineering,Nanjing Institute of Technology,Nanjing 211167,China)

机构地区：[1]南京工程学院人工智能产业技术研究院,南京211167 [2]南京泉峰科技有限公司,南京211106 [3]南京工程学院机械工程学院,南京211167

出　　处：《计算机测量与控制》2025年第2期71-79,共9页Computer Measurement &Control

基　　金：教育部中国高校产学研创新基金——腾讯科技创新教育专项(2022TX020);江苏省配电网智能技术与装备协同创新中心开放基金项目(XTCX202411)。

摘　　要：由于缝宽尺寸直接影响筛缝的过滤能力和筛分精度,为确保纸浆的处理质量,提高筛缝缝宽检测效率,提出了一种基于线结构光扫描的圆柱型筛框筛缝检测技术;搭建筛框回转实验平台,采用直射式激光三角测量法采集筛框间隙轮廓信息,针对金属表面高反光等图像噪音的难点,结合了中值滤波、双边滤波和自适应权重调整的图像预处理方法,利用基于大津法的灰度图阈值分割法,确定最优的阈值,提取光斑区域,利用Steger算法提取激光光条中心线;测量系统对10条筛缝的16组尺寸进行了重复精度测量,结果显示极差最大为0.27 mm,最大标准差为0.012466 mm,通过对比系统测量值与人工实测值,最大误差值为15μm;经实验测试验证了激光扫描法在旋转平台带动筛框恒速转动时筛缝尺寸测量的可行性,对提高纸张的质量和筛框的筛分效率具有很大生产效益和经济效益。The slit width directly impacts the filtering capability and screening accuracy of screen frames.To ensure the processing quality of pulp and enhance the efficiency of slit width detection,a cylindrical screen frame slit detection technology based on line structured light scanning is proposed.This paper builds a screen frame rotation experimental platform,and uses direct laser triangulation to collect the contour information of the screen frame gaps.To address image noise such as high reflectivity on metal surfaces,the system combines the image preprocessing algorithms of median filtering,bilateral filtering,and adaptive weight adjustment.The Otsu s grayscale threshold segmentation algorithm is used to determine optimal threshold and extract spot region.the Steger algorithm is applied to extract the center line of the laser stripe.Through the precision measurements of 10 slits,with one slit measuring 16 sets of data,the maximum range of the results is 0.27 mm,with a maximum standard deviation of 0.012466 mm.The maximum error between the system measurement and the manual measurement is 15μm.Experimental results show while the screen frame rotates at a constant speed on the rotary platform,this laser scanning method has the feasibility of slit width measurement,which has the significant substantial production and economic benefits for improving paper quality and the screening efficiency of screen frames.

关 键 词：激光三角测量 激光中心提取 Steger算法 大津法 筛框筛缝检测 结构光 双边滤波 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]