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随着通用航空的发展,对小型飞机及小型航空电子系统的需求越来越大。基于小型综合航电系统的结构与应用需求,通过分析ARINC 615A标准,设计了一个基于TFTP协议的数据与应用加卸载系统架构。针对系统架构中的难点,提出了TFTP协议栈、数据卸载与应用软件加载等三项关键技术,给出了具体的设计与实现方法。系统在Vxworks平台上实现,目前已在某小型综合航电系统项目中取得了较好的工程应用效果。
With the development of general aviation, there is an increasing demand for small aircraft and small avionics systems. Based on the structure and application requirements of small-scale integrated avionics system, by analyzing the ARINC 615A standard, a data and application loading and unloading system architecture based on TFTP protocol is designed. According to the difficulties in the system architecture, three key technologies of TFTP protocol stack, data unloading and application software loading are put forward, and the specific design and implementation methods are given. The system is implemented on the Vxworks platform and has achieved good engineering application results in a small-scale integrated avionics system project.