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介绍了一种基于SOPC思想的VXI总线数据采集模块的设计方法;该方法用Nios II软核处理器实现了模块化数据采集模块的本地控制器,并将VXI总线接口逻辑和的本地控制器集成在一块Cyclone II芯片内;文章还讨论了数据采集模块驱动程序的开发,制作了虚拟仪器软面板;该模块已成功应用到某型悬挂系统的仿真试验中;利用本文提出的这种设计方法来开发VXI总线数据采集模块,能以单芯片取代以往的多芯片设计方案,大大简化电路板设计,增强电路功能的灵活性和系统的可靠性。
A design method of VXI bus data acquisition module based on SOPC is introduced. The method realizes the local controller of modular data acquisition module with Nios II soft-core processor and integrates the VXI bus interface logic and the local controller In a Cyclone II chip; the article also discussed the data acquisition module driver development, produced a virtual instrument soft panel; the module has been successfully applied to the simulation of a suspension system; using this design method proposed in this paper VXI bus data acquisition module development, to replace the previous single-chip multi-chip design, greatly simplifying the circuit board design, enhance the flexibility of circuit functions and system reliability.