基于FPGA的地检系统设计与实现

Design and Implementation of Ground Test Equipment Based on FPGA

摘要:

系统是为某型号新一代航天载荷可见光通道设计；主要功能是实现可见光通道的图像的实时采集与获取,完成可见光通道的地面调试与性能检测；文中针对测试需求提出了完整设计方案和软硬件实现方法；系统采用Xilinx新一代低功耗现场可编程门阵列(FPGA)作为控制核心,通过自顶向下的程序设计方法完成硬件时序驱动和逻辑控制；系统主要完成了机械接口设计,CMOS探测器的电路设计与时序驱动,光电压信号的放大、滤波与数模转换,图像数据与上位机的传输接口设计以及上位机软件设计；高速数据传输通过USB接口来实现；经测试验证,系统功能良好,能很好地满足实际工程需求。

Abstract:

The system is designed for the visible channel of the next generation of spacecraft payload. The main function of the system is to obtain real-time image of the visible channels, and complete the ground debugging and performance testing of the visible channel. This paper presents the complete design of the system, including the hardware and software, according to test requirements. In the system, a new generation of low-power Xilinx’s field programmable gate array (FPGA) is used as the control core, and programed with Verilog language from top to bottom to complete the hardware timing-driven and logic control. The main work is to complete the mechanical interface design, the timing-driven of the CMOS detectors, signal conditioning, analog to digital conversion, data transmission interface design and PC software design. High speed data transmission is achieved by using the USB interface. After testing, the system works well and can well meet the practical engineering requirements. 