AMCW laser rangefinder for machine vision using two modulation frequencies for wide measurement range and high resolution

被引：9

作者：

Pérez, S ^{[1
]}

García, E ^{[1
]}

Lamela, H ^{[1
]}

机构：

[1] Univ Carlos III Madrid, Dept Ingn Elect Electron & Automat, Area Tecnol Electron, Grp Optoelectron & Tecnol Laser, Madrid, Spain

来源：

TESTING, PACKAGING, RELIABILITY, AND APPLICATIONS OF SEMICONDUCTOR LASERS IV | 1999年 / 3626卷

关键词：

laser rangefinder; machine vision; laser vision;

D O I：

10.1117/12.345414

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Short-range laser rangefinders are the object of intense research effort due to their wide range of applications in tasks such as machine vision, automated inspection and 3-D range map acquisition. For ranges of up to a few metres, Amplitude Modulation Continuous Wave (AMCW) systems using modulation frequencies in the range of several MHz, have obtained very interesting results. However, these systems present a trade-off between maximum range and minimum measurement resolution, which is indeed a problem. In this work we present the conception and first experimental results of an AMCW system that employs two different modulation frequencies to overcome this problem and achieve both wide measurement range and good resolution.

引用

页码：48 / 52

页数：5