摘要
USB接口应用到数据采集系统中,提高了数据采集系统的速度,增强了系统的抗干扰能力和数据传输的可靠性。本系统利用了通用串行总线USB的高速传输功能,采取基于ARM技术的USB接口传输方案,以S3C44BOX为主控制器,将高频模拟信号经AD8321前置放大和增溢调整后进行AD7829模数转换,完成8路数据采集,并通过USB2.0接口芯片ISP1581实现与PC机的快速数据传输。整个系统在硬件与软件两个方面达到了较佳配合,实现了快速而准确地采集及实时处理。
Applying USB interface to the data acquisition can efficiently increase data acquisition speed, strengthen antijamming ability and improve data transmission reliability. In this text, we bring forward a USB interface transmitted solution based on ARM technique, which take advantage of the high transmitting feature of USB, and choose S3CA4BOX as the main controller. In this data acquisition system, high frequency analog signal is transformed to digital signal in AD7829 analog-digital converter after the preamplifier and gain adjustment so as to accomplish a 8-path data acquiring, then realize the fast data transmitting between interface chip ISP1581 and PC. Both hardware and software fulfill the requirements of the system and fast ＆ accurate sampling and processing can be achieved.
出处
《电子测量技术》
2007年第9期84-86,共3页
Electronic Measurement Technology
