基于FPGA实现的IRFPA探测器驱动电路的设计

摘要

System composition and operation principles of the drive circuit of an infrared focal plane array (IR-FPA) detector are introduced. Single field-programmable gate array (FPGA) chip is used to control the detector and pre-process infrared images so as to reduce the design size of the whole system and increase design integrated level. The algorithm implementation of FPGA is introduced in detail. The design method and process of key module are given. The feasibility of the method is verified with a detector of 640 × 512 IRFPA. The images are clear with high contrast and the image post processing requirements are met.%介绍了IRFPA（infrared focal plane arrays）探测器驱动电路的系统组成及工作原理，设计采用单片FPGA芯片实现探测器控制及红外图像的预处理，减小了整个系统的设计尺寸，提高了设计的集成度。详细介绍了核心器件FPGA的算法实现，给出了关键模块的设计方法、流程。通过应用于640×512红外焦平面阵列探测器，验证了方法的可性能，成像效果清晰、对比度高，满足后期图像处理的要求。