1.中国科学院合肥物质科学研究院安徽光学精密机械研究所 合肥 230031; 2.中国科学技术大学 合肥 230036; 3.中国科学院通用光学定标与表征技术重点实验室 合肥 230031
TP274
中国科学院重点实验室基金（CXJJ-22S002）项目资助
Wang Youkang
1.Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of Science， Hefei 230031, China； 2.University of Science and Technology of China，Hefei 230036, China； 3.Key Laboratory of Optical Calibration and Characterization， Chinese Academy of Science，Hefei 230031, ChinaHu Yuyang
1.Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of Science， Hefei 230031, China； 2.University of Science and Technology of China，Hefei 230036, China； 3.Key Laboratory of Optical Calibration and Characterization， Chinese Academy of Science，Hefei 230031, China1.Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of Science， Hefei 230031, China; 2.University of Science and Technology of China，Hefei 230036, China; 3.Key Laboratory of Optical Calibration and Characterization， Chinese Academy of Science，Hefei 230031, China
微光像增强器是夜视技术中的核心部件，信噪比是评价微光像增强器性能的重要参数之一。设计了一种基于FPGA的像增强器信噪比测试仪控制系统，包括信号采集模块、恒流驱动模块、主控模块、通信模块和电源模块等。系统以XC7K325T型FPGA为核心，完成ADC、DAC、串口通信等功能以及接口间逻辑设计，实现光电流数据采集、信号处理以及系统参数设置等功能，从而完成像增强器信噪比的测量。测试结果表明，像增强器信噪比测试仪各项功能执行正常，信噪比测量误差小于2%，验证了控制系统设计的正确性，为信噪比测试仪的可靠应用奠定基础。
Low-light image intensifier is a key component in night vision technology. The signal-to-noise ratio is one of the important parameters to evaluate the performance of lowlight image intensifier. A control system of signal to noise ratio tester for image intensifier based on FPGA is designed, including signal acquisition module, constant current driving module, main control module, communication module and power module. The system takes XC7K325T FPGA as the core, complete the ADC, DAC, serial communication and other functions as well as interface logic design, realize the photocurrent data acquisition, signal processing and system parameter setting and other functions, so as to complete the measurement of signal to noise ratio of image intensifier. The test results show that the functions of the image intensifier signal-to-noise ratio tester are normal and the measurement error of the signal-to-noise ratio is less than 2%, which verifies the correctness of the design of the control system and lays the foundation for the reliable application of the signal-to-noise ratio tester.
王友康,李从飞,韩文昇,胡雨阳,邹鹏.基于FPGA的像增强器信噪比测试仪控制系统设计[J].电子测量技术,2023,46(19):1-7
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