基于数字微镜器件(DMD)构建的高帧频景像仿真系统, 可以实现可见光和红外波段高帧频探测系统的功能和性能测试, 其驱动技术是整个仿真系统的核心。以FPGA为核心, 结合DMD的硬件特性和改进的PWM调制方法, 完成DMD控制系统驱动设计, 实现PCIe高速数据传输、DDR3数据存取以及DMD高帧频灰度图像显示, 同时, 利用WinDriver完成上位机PCIe驱动设计。通过实验验证, 该驱动技术能够实现仿真系统以1000Hz高帧频显示8bit灰度图像, 满足高帧频探测系统测试需求, 并可广泛应用于可见光和红外波段高帧频景像仿真系统的构建。

The high frame rate scene simulation system based on DMD can realize the function and performance testing of high frame rate detection system in visible and infrared band, while the driving technique is the core of the whole simulation system. According to the hardware characteristics of DMD and the improved PWM method, the driver of the DMD control system is designed based on FPGA and can realize the PCIe high speed data transmission, DDR3 data access and high frame rate displaying of grayscale images based on DMD. At the same time, the PCIe driver of PC is designed by using WinDriver. The experimental results show that this driving technique can drive the simulation system to display 8bit grayscale images in 1000Hz, which can meet the test requirement of high frame rate detection system, and can be applied to construct high frame rate scene simulation systems in visible and infrared band.