硬介质记录的数字化方法及数据处理技术  

HARD MEDIA RECORDS DIGITIZING AND RELATIVE DATA PROCESSING

作　　者：林敏[1] 杨迎新[1] 焦培林[1] 

机构地区：[1]西南石油学院机械工程系,四川南充637001

出　　处：《西南石油学院学报》2001年第1期64-66,共3页Journal of Southwest Petroleum Institute

摘　　要：介绍了一种将记录在硬介质上的数据曲线数字化并自动录入计算机的方法以及相关的数据处理技术。其基本原理是 :利用计算机数字化仪将连续的记录曲线输入AutoCAD软件系统 ,并自动离散成一系列首尾相连的线段 ,再从AutoCAD内部数据库中提取出各线段端点的坐标数据 ,最后对这些不规范的弦步长采样数据进行处理 ,将其转换成规范的坐标步长采样数据。采用这种方法可以方便地完成各种硬记录数据曲线的采样 ,采样数据自动输入计算机 ,同时又可以生成直观、准确、易于编辑的图形文件。该方法简便易行 ,采样效率高 ,采样步长可任意调整 ,采样误差小 。This paper introduce a practicable method to digitalize various curves or drawings recorded on hard- media such as paper. The AntoCAD software and a digitizing tablet are both necessary when digitize a curve or a drawing. The curve can be separated by a controllable acquiring - step into a series of short lines end to end and saved in a AntoCAD drawing database file automatically. Coordinates of the end points of the separated lines can be read out from the file by running a special computer program developed by the author. Because the course of the curve digitizing is based upon hypothenuse step, according rules of AutoCAD, not coordinate -step in normal data acquisition cases, it is generally necessary to convert the hypotenuse-step-based data to normative coordinate-step-based ones through a special transforming calculation. This convenient and credible method would be very helpful for those people who need to get their various hard - copy curves or records processed and saved by means of computer.

关 键 词：硬介质记录 曲线 数字化 数据处理 AUTOCAD 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置] TP391.72[自动化与计算机技术—控制科学与工程]