基于激光扫描钢管直径在线检测研究  

On-line Detection of Pipe Diameter Based on Laser Scanning

作　　者：张永枫[1] 郭丹伟[2] 

机构地区：[1]深圳职业技术学院工业中心,广东深圳518055 [2]长春理工大学光电信息学院,吉林长春130000

出　　处：《现代电子技术》2011年第23期208-210,共3页Modern Electronics Technique

摘　　要：为了实现对红热钢管直径在线检测的目的,采用了数字式激光扫描的方法。该方法基于模-数变换的原理,用电机带动四面体棱镜旋转,实现激光双光束同时对钢管直径和光栅的扫描,用光栅的栅距度量钢管直径。其创新之处是采用激光双光束同时扫描方式,克服了电机转速不稳带来的误差。用标准件做了原理实验测试,获得令人满意的结果,最大测量误差为±20μm。使用此方法进行钢管直径在线检测具有实用性。In order to achieve on-line detection of red-hot pipe diameter,a digital laser scanning method was used.The method was based on analog-digital conversion,used a motor driven tetrahedron prism rotating to achieve double-beam laser on the pipe diameter and grating while scanning at the same time,adopted grating pitch as a ruler to measure the diameter of the pipe.Using of this double-beam laser scanning,the error caused by the motor speed instability was overcame.The satisfactory results can be obtained by experimental test,the maximum measurement error is.A conclusion that on-line detection of pipe is practical.

关 键 词：激光扫描 直径 信息变换 在线检测 

分 类 号：TN249-34[电子电信—物理电子学]