面向航天应用的高可靠性FPGA动态局部重构

High Reliability FPGA Dynamic Partial Reconfiguration for Aerospace Application

在航天应用中,FPGA的单粒子翻转是影响航天器功能和寿命的重要因素,目前,部分航天产品使用定时重加载的方式避免单粒子效应的积累和影响,但是重加载的过程会导致全部FPGA逻辑中断,极大影响航天器功能的持续性。因此,文章提出了一种适用于航天的FPGA动态局部重配置系统,在阐述了FPGA动态局部重配置技术的原理和航天应用前景后,详细说明了其设计流程、硬件电路板架构和控制软件框图。通过板级试验验证了系统功能,采用示波器对结果进行了测试,证明该系统设计的高可靠性。FPGA动态局部重配置技术,既提高了FPGA的可靠性,又保证了FPGA部分关键功能的持续性。

In aerospace applications, the single event flipping of FPGA is an important factor affecting the function and lifetime of the spacecraft. At present, the time reloading method is applied to avoid the accumulation and influence of the single event effect in some of the aerospace products. However, the reloading process will lead to all FPGA logic interruptions, which greatly affects the sustainability of the spacecraft's functions. Therefore, a FPGA dynamic partial reconfiguration system for aerospace applications is proposed in this paper. The principle of FPGA dynamic partial reconfiguration technology and its prospect in space application are expounded firstly. Then the design process, the hardware circuit board architecture and the control software block diagram are described in detail. The function of the system is verified by the plate test, and the result tested by the oscilloscope demonstrates that the design of the system has high reliability. The FPGA dynamic partial reconfiguration technology proposed in this paper not only improves the reliability of the FPGA, but also ensures the sustainability of some key functions of the FPGA.