一种嵌入式纸币特征采集系统的设计与实现  

Designing and applying of data acquisition system of bill characteristic based on embedded system

作　　者：徐鹏程[1] 贺建飚[1] 贺庆[1] 

机构地区：[1]中南大学信息科学与工程学院,长沙410083

出　　处：《计算机应用研究》2008年第4期1261-1263,共3页Application Research of Computers

基　　金：国家自然科学基金资助项目(60503007)

摘　　要：结合uClinux操作系统和S3C4510B的特点,设计了以中断方式实现的实时特征采集系统,通过开辟非实时程序与实时特征采集系统共享的存储区,将大大地提升纸币识别系统的并发处理能力。但是uClinux操作系统并不能完美地满足实时采集系统对实时性的要求。为了能使用功能强大并且免费的uClinux,有必要改进uClinux的中断延迟时间,提出了改进方法。经过改进后的uClinux可以满足要求。According to the Characteristic of uClinux and S3CA510B,designed a real-time data acquisition system which use interrupt. A memory area was set up which was shared by non-real time programs and this real-time data acquisition system , and it could greatly improve the ability of concurrent processing of this bill acceptor system. But the real time of uClinux could not perfectly meet the request of this real-time data acquisition system. In order to make use of uClinux which was free and had powerful function. It was necessary to improve its interrupt latency, and a method was brought forward, uClinux can meet the request of this real-time data acquisition system by using this method.

关 键 词：UCLINUX S3C4510B 纸币识别系统 实时采集系统 中断延迟 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论]