基于FPGA自动频率跟踪数字锁相放大器的微弱光电信号检测研究

Weak Photoelectric Signal Detection based on FPGA Automatic Frequency Tracking Digital Phase-locked Amplifier

随着我国电力行业的进步,光电信号检测特别是微弱光电信号检测研究有了充分的发展,并得到了广泛应用。检测研究中有着难以收集与噪声干扰严重的客观条件,数字锁相放大器是光电微弱信号检测中常应用到的一种检测仪器,文章研发一种基于FPGA自动频率跟踪控制的数字锁相放大器,经实际测试可以能够提高微弱光电信号检测的准确度,测量结果有着良好的稳定性。

With the progress of China's power industry,photoelectric signal detection,especially weak photoelectric signal detection research has been fully developed,and has been widely used.Noise detection is difficult to collect in the study and objective conditions,digital phase-locked amplifier is weak photoelectric signal detection often applied to a kind of testing instrument,this paper developed a kind of automatic frequency tracking control based on FPGA digital phase-locked amplifier,the actual test can be able to enhance the accuracy of weak photoelectric signal detection,measurement result has a good stability.