摘要： 研制了基于索引文件的U盘数据存储模块。该模块在DSP控制系统基础上扩展了USB主控芯片CH375，通过在DSP内部嵌入USB主机的控制程序，实现对U盘的数据存储功能。针对一般Flash存储介质的U盘，该模块的嵌入式程序实现了基于索引文件的数据存储结构，提高了文件的存储效率。实验表明该模块运行可靠、可移植性好，能满足螺旋焊管截面参数在线测量系统的数据存储要求。
关键词:
在线测量,
数据存储,
FAT文件系统
Abstract: The paper designs a module of data storage with U-Disk based on index file. It meets the fast storing requirement of a great deal of original data gained in the on-line profile measurement system of spiral weld steel pipe with large diameter. The module consists of DSP control system and extended USB host chip named CH375. It realizes the function of data storage in the U-Disk, using the program that embedded in DSP. A format of data storage based on index file is applied to improve the speed of file storage, and it leaves out the searching work of FAT area and root area on the U-Disk. Experiments show that the module is stable and has excellent transplantation. The module can be used in many other systems that need the function of fast data storage.
Key words:
online measurement,
data storage,
FAT file system
中图分类号:
董培臣;孙振国;陈 强;张文增. 基于索引文件的U盘数据存储模块设计和实现[J]. 计算机工程, 2008, 34(7): 251-253.
DONG Pei-chen; SUN Zhen-guo; CHEN Qiang; ZHANG Wen-zeng.
Design and Realization of Data Storage Module with U-Disk Based on Index File
[J]. Computer Engineering, 2008, 34(7): 251-253.