基于CPCI总线的反射内存网络接口卡研制

Reflective Memory Network Interface Board Based on CPCI Bus

摘要:

反射内存网络具有协议简洁、组网简便、确定性延时等突出特点,因此在半实物仿真系统和分布式测控系统中有着广泛的应用；根据环形反射内存网络的组网需求,研制开发了一种具有CPCI接口的反射内存网络接口卡,实现了网络链路层和物理层的功能；同时,设计开发了Windows XP操作系统下的驱动程序,以API函数的形式实现了软件层的功能；研制中还构建了反射内存网络测试环境,进行了数据传输测试和DMA读写测试；实验结果表明基于CPCI总线的反射内存网络接口卡工作稳定、可靠,数据更新速率快。实验结果亦表明应当根据反射内存网络传输的数据帧数量适当的选用DMA或单次读写方式。

Abstract:

With concise protocol,simple networking,deterministic delay and other outstanding features,reflective memory network has been widely used in the hardware-in-loop simulation system and distributed control system.According to the networking request of ring reflective memory network,developed a reflective memory network interface board with CPCI interface to achieve the function of network link layer and physical layer.At the same time, the driver under Windows XP operating system is designed and developed, and the function of software layer is realized in the form of API function. Also, during development, reflective memory network test environment is built and a series of tests are made.Experimental results show that the CPCI bus based reflective memory network interface board is stable,reliable, and fast data update rate.The experimental results also show that the selection of DMA or read and write way should be based on the reflective memory network transmission frame number.