基于USB 2.0的红外数字图像注入式仿真器设计

摘要

A newly developed digital image injected simulator for infrared system based on USB2.0 is introduced.The design acquires simulation data from the computer through USB bus,using the FPGA as the interface and the control-ler of the state machine.Furthermore,the design confirms a high-speed and real-time data transmission by introducing multi-threads technology,and implements device binding by sending vendor request to USB control endpoint.The im-age is acquired by the Camera Link image acquisition card and displayed on a monitor.Experiments show that the im-age from the injected simulator is continuous,stable and real-time,reaching up to the design specification of 100 fps. The simulator can provide a reliable data source for the IR imaging detecting system.%介绍了一种基于USB 2.0的红外数字图像注入式仿真器设计方案。该设计通过USB总线从PC机获得仿真图像数据，以FPGA作为接口和状态机控制。设计中引入多线程技术保证数据传输的高速性和实时性，通过向USB控制端点发送专用请求实现设备的绑定。测试时利用Camera Link图像采集卡采集仿真器输出并显示，结果表明，该仿真器具有输出图像连续无间断、稳定性高、实时性好等特点，达到了100 f/s的帧频指标，能够为红外光电成像探测系统提供实时视频图像仿真。