基于虚拟仪器技术的示波器的设计

Design of Oscilloscope Based on Virtual Instrument Technology

介绍了虚拟仪器的特点及其较传统仪器的优势,并由此设计出基于LabVIEW平台上的多功能虚拟双通道数字示波器.给出了以ADC和DSP为核心的数据子系统的硬件设计和实现方案.接着详细介绍了虚拟示波器的软件设计.调试结果表明,该示波器的精度、可靠性等性能指标明显优于传统仪器,而且可操作性、可维护性强.

The characteristics of virtual instruments are introduced, and the advantages compared with the traditional instruments are presented, so a virtual multi-functional dual-channel digital oscilloscope based on LabVIEW is designed. The data acquisition sub-system is mainly constructed by ADC and DSP, and its hardware structure is also studied and implemented. Then the software design of the virtual oscilloscope is presented in detail. The result shows that the capability of the oscilloscope is better than that of the traditional instruments in precision and reliability etc. And it has a high manipulability and maintainability.