多通道高速数据采集板的设计

The Design of Multi-Module High-Speed Data Acquisition Board

根据虚拟仪器的设计思想,详细介绍了高速数据采集板软硬件设计的基本原则、方法及工作流程,设计了基于PXI总线的多通道高速数据采集板。采用DSP到PXI总线的跨总线DMA技术解决了高速数据传输的瓶颈问题,实现了多通道高速数据采集。

This article discusses about the multi-module parallel high-speed virtual instrumentation, including scheme design, device choice, module hardware architecture and DSP software flow. The following problems have been solved： the bottleneck problem of high-speed data transmission between modules and PC by using of PXI bus, the DMA txansmitting technology which strides over buses from DSP bus to PCI bus.