摘要
针对传统示波器价格昂贵且采集数据不能长久保存等问题,设计了一种基于FPGA和LabVIEW的双通道示波器。以Cyclone系列FPGA为核心,通过信号衰减及AD9288模数转换,采集双通道输入信号值;通过计算机并口,调用动态链接库对应驱动程序,实现采集板与PC机通信;通过LabVIEW设计的虚拟示波器实时程控显示采集的波形曲线和读取历史的采集波形。整个系统设计参数自定义,单芯片完成系统主要逻辑功能,测试范围为-20～+20 V,运行稳定性强,且方便用户操作使用。
As the traditional oscilloscope is more expensive and it is difficult to preserve data for a long time, the design of dual - channel oscilloscope, which is based on LabVIEW and FPGA,is proposed. By way of signal attenuation and the AD9288 analog-digital conversion, the Cyclone series FPGA is adopted as its core to collect value of dual-channel inputting signal. Through the computer paral- lel port ,the dynamic link library is invoked to the corresponding driver to achieve the communication between acquisition board and PC. Through the virtual oscilloscope based on LabVIEW, waveform curve can be collected by real-time program-controlled display, which reads the history of the acquired waveform. The system is user-defined on design parameters. A single - chip in the system, test range from -20 to ＋ 20V, which runs stably, is used to fulfill the main logic function and the interface is use -friendly.
出处
《西华大学学报（自然科学版）》
CAS
2012年第5期22-24,46,共4页
Journal of Xihua University:Natural Science Edition
