计算机控制激光扫描识别木段横断面图形的研究  

Study on Cross section Pattern for Peeling Bolts with Computerized Laser Scanning System

作　　者：韩玉杰[1] 金维洙[1] 王阿川[1] 蔡立新[1] 孟庆军[1] 

机构地区：[1]东北林业大学

出　　处：《木材工业》1999年第1期13-14,22,共3页China Wood Industry

基　　金：黑龙江省自然科学基金

摘　　要：针对原木在确定最佳旋切回转中心时，需要识别原木横断面外形几何尺寸而研究、设计了采用计算机控制的激光扫描检测系统，对原木进行动态测试、数据转换及图形显示。其方法是沿木段长度方向均匀设置５～７个激光传感器，当木段旋转时，起动激光传感器进行数据采集，每隔１５°扫描一个点，在各横断面圆周上共采集２４个点的数据，由计算机计算出每个角度上原木表面到中心轴的距离，并对这些数据通过坐标变换，在计算机上绘制出原木横断面几何图型。测试结果表明，该系统的综合测量精度达到±１ｍｍ。In peeling process,it is important to fix the turning center of bolts by measuring outlines and sizes of each bolt so that the veneer yield could be optimized.Measuring system of computerized laser scanners proved capable to make dynamic measuring,data processing and geometric pattern available.The system discussed in this paper was to set 5～7 laser scanners along lengthwise direction of a bolt.When the bolt was turning driven by power unit,the laser scanners made data measured.In each cross section,24 data were measured,which means one data for turning 15° could be collected.Then the data were processed by a computer and the distances from the turning axis to each measuring point of the bolt surface were calculated.At last,the data were transformed and an outline of the cross section of the bolt were developed on computer screen accordingly.The test results showed that the measurement accuracy of the system could reach ±1 mm.

关 键 词：激光扫描 识别 木段 横断面图形 定心 原木 

分 类 号：TS64[轻工技术与工程] TS612.1