基于CH378的便携式高速数据采集系统设计与实现

Design and Achievement of Portable High Speed Data Acquisition System Based on CH378

摘要:

针对数据采集系统在速度、容量和体积方面的需求,文中提出了一种基于FPGA的便携式高速数据采集系统方案,采用可充电锂电池作为供电电源,采用FPGA控制读写大容量Flash数据作为高速数据缓冲,控制USB接口芯片CH378完成对U盘的读写操作,实现大容量数据的可靠和便携存储;详细介绍了该测试系统的设计背景、硬件电路的设计依据、固件程序的设计思想和测试系统的具体实现;实验结果表明,该系统具有成本低、通用性强、可靠性高、便携式操作等优点,能够实现数据的高速采集,海量存储,实现了脱离计算机直接存储数据至U盘的功能。

Abstract:

The high speed data acquisition system based on FPGA was designed in view of the requirements in terms of high speed, high capacity and small volume using the rechargeable lithium battery as a power supply, using FPGA to control the large-capacity Flash as a high-speed data buffer, using FPGA to control USB interface chip CH378 read U disk data. This paper introduces the background of the test system, the design principle of the hardware circuit, the ideas for firmware design and the implementation of test system in detail. Experimental results show that the system with the advantages of low cost, versatility, high reliability, and portable operation, is able to capture and store large amounts of data to the U-disk without PC.