VXI虚拟仪器关键技术分析

Key Technique Analysis of VXI Virtual Instruments

VXI总线已经广泛用于仪器、航空航天、制导、自控等领域 ,其高密度、高速度、高度开放性和高度规范化为虚拟仪器提供了理想环境。本文讨论了基于VXI总线的虚拟仪器的一些关键技术 ,包括基于VXI总线的虚拟仪器的软硬件平台的构成、高速实时处理的实现方法、虚拟仪器接口设计和驱动程序编写方法。给出了一种高速多DSP结构的实时处理方案。

VXIbus has been widely used in the field of instruments,aviation & space technology,guidance system and automatic control etc up till now.Its high speed,high density,plug&play,true open architecture and standardization properties take an ideal environment for virtual instrument.In this paper,hardware and software design principles of VXI virtual instrument,the method of real-time processing,the interface design and the program design of VXI instrument driver are introduced.