基于PSD的织物引导线跟踪器设计

为实现筒状织物中引导线的自动跟踪识别，设计了一种基于位置敏感探测器PSD的引导线跟踪器。介绍PSD的基本结构和原理，阐述系统的整体设计方案和工作原理，并重点介绍了系统光源、信号前置处理电路以及A/D转换电路。为提高系统精度和稳定性，在PSD信号处理过程中，使用软件运算代替传统处理电路中的四则运算部分。通过数控平台驱动织物进行引导线跟踪实验，结果表明系统的定位精度为±1.5 mm，可满足剪布位置的精度要求。

Design of fabric guide line tracker based on position sensitive detector

For achieving tubular fabric guide line automatic tracking identification, a fabric guide line tracker based on position sensitive detector (PSD) was designed. The structure of the system and tracking principle were introduced. The overall system program and working principle were illustrated with focuses on system light source, preamplifier circuit and A/D conversional circuit. In order to improve the precision and stability of the system, in the course of PSD signal processing, software algorithms was used instead of the traditional arithmetic processing circuit. The fabric guide line tracking experiment was carried out in platform-driven CNC. The results showed that the position accuracy of the system is less than ±1.5 mm, which meets the location accuracy requirement on fabric cutting.