摘要
介绍了一种基于VIIS-EM总线,采用FPGA和LabVIEW技术的虚拟示波器。系统采用AD9288作模数转换器,通过运用AD并行采样模式,提高了系统的采样率,并且前端运用高增益带宽的放大器提高了输入信号的带宽。硬件部分包括调理电路、AD转换部分、FIFO和控制电路。软件部分采用LabVIEW设计各模块,主要包括对信号的时域分析和频域分析。经测试,该示波器具有采样率高,性价比高的优点,可用于实验教学中,具有一定实用价值。
This paper introduced a bus based on VIIS-EM. The virtual oscilloscope adopted the technology of LabVIEW and FPGA. The system used AD9288 as the analog-digital converter. The scheme used AD parallel sampling mode to improve the sampling rate of system. The front-end used the high-gain bandwidth amplifier to improve the bandwidth of the input signal. The hardware included conditioning circuit, AD converter, FIFO and control circuit. The software used LabVIEW to design each module, which included time domain analysis and frequency domain analysis. After testing, the oscilloscope has the advantages of high sampling rate and high performance. The system can be used in experimental teaching, which has a certain practical value.
出处
《实验室研究与探索》
CAS
北大核心
2013年第10期76-79,155,共5页
Research and Exploration In Laboratory
