| 摘要: |
| 介绍了一种基于USB的GPS数据采集系统软硬件设计方案，以FPGA为该系统的控制
核心、CY7C68013为USB接口芯片实现FPGA与上位机之间的数据传输。针对FLASH中的坏块问
题，提出了一种FLASH坏块检测及管理方案。采用双缓冲技术，解决了采集系统中的数据丢
失问
题。该系统实时传输速率达4 Mbit/s，而且可支持更高的传输速度。 |
| 关键词: GPS接收机 数据采集系统 通用串行总线 双缓冲技术 实时
传输 |
| DOI： |
|
| 基金项目:国家高技术研究发展计划(863计划)项目（2009AA12Z314） |
|
| A GPS Data Acquisition System Based on USB |
| ZHANG Jian-xi,WANG Feng,LI Jin-hai,YAN Yue-peng |
| (Institute of Microelectrinoics，Chinese Academy of Sciences,Beijing 100029，Chi
na) |
| Abstract: |
| The design of a GPS data acquisition system based on USB(Universal Serial Bus)
is introduced.The software and hardware design is given.FPGA is the master cont
rol of the system. CY7C68013 is used as USB interface chip to complete data tran
smission between FPGA and USB host.With regard to the FLASH invalid block,a meth
od of FLASH invalid block detection and management is proposed. Doublebufferin
g
technology is used to solve the problem of data loss. The realtime transmissio
n rate of the system is up to 4Mbit/s and the system supports higher transmissi
on
speed. |
| Key words: GPS receiver data aquisition system USB double buffering technology real time transmission |
