基于GPS授时的多通道数据同步采集系统

A Multi-channel Synchronous Acquisition System with GPS Timing

摘要:

针对异地多通道同步数据采集需要,设计并实现了一种基于GPS授时的多路数据采集系统；利用EP4CE10F17C8+UBLOX-6T+ADS8568+CYPRESS68013A的组合实现8路数据的同步采样及上传;系统内建两个高精度时钟,通过GPS秒脉冲校准,从而获得每个采样点的准确时间；以FPGA为核心,完成AD转换控制、数据组织和缓存、USB数据传输控制；基于VS2010应用程序完成数据的接收和处理；测试结果表明,该系统各模块设计合理,运行稳定,实时性高,具有较好推广价值。

Abstract:

A multi-channel data acquisition system based on GPS timing was designed for long-distance multi-channel synchronized data acquisition. The system combined EP4CE10F17C8,UBLOX-6T,ADS8568 and CYPRESS 68013A to implement 8-channel synchronized and update. The exact time of each sample was obtained with two build-in high precision clock synchronized with GPS timing plus. The FPGA functioned as the core,controlling AD conversion,data organization,caching,and USB transmission. A PC program based on VS2010 was written for data receiving and processing. An experiment shows that the system is stable,features high real-time performance,have a good application value.