1.上海工程技术大学机械与汽车工程学院机器人研究所 上海 201620; 2.上海大型构件智能制造机器人技术协同创新中心 上海 201620
TP212
国家自然基金（51665039）项目资助
Pan Ruizhi
1.Robotics Institute, School of Mechanical and Automotive Engineering, Shanghai University of Engineering Science， Shanghai 201620, China； 2.Shanghai Largescale component Intelligent Manufacturing Robot Technology Collaborative Innovation Center，Shanghai 201620, ChinaZhang Hongpu
1.Robotics Institute, School of Mechanical and Automotive Engineering, Shanghai University of Engineering Science， Shanghai 201620, China； 2.Shanghai Largescale component Intelligent Manufacturing Robot Technology Collaborative Innovation Center，Shanghai 201620, ChinaWang Haoxiang
1.Robotics Institute, School of Mechanical and Automotive Engineering, Shanghai University of Engineering Science， Shanghai 201620, China； 2.Shanghai Largescale component Intelligent Manufacturing Robot Technology Collaborative Innovation Center，Shanghai 201620, ChinaZhang Hua
1.Robotics Institute, School of Mechanical and Automotive Engineering, Shanghai University of Engineering Science， Shanghai 201620, China； 2.Shanghai Largescale component Intelligent Manufacturing Robot Technology Collaborative Innovation Center，Shanghai 201620, China1.Robotics Institute, School of Mechanical and Automotive Engineering, Shanghai University of Engineering Science， Shanghai 201620, China; 2.Shanghai Largescale component Intelligent Manufacturing Robot Technology Collaborative Innovation Center，Shanghai 201620, China
针对F-P滤波器解调法容易产生漂移与校正成本较高的问题，本文采用FPGA和光开关搭建了F-P滤波器多通道共振解调系统，该系统利用DDS信号生成特定的三角波驱动电压，通过串联多维参考FBG实现基于插值法对波长-时间的动态标定，设定了3种动态标定模式，包含线性关系和二次关系的标定。利用FPGA控制光开关实现快速切换模式与参考波长、待测波长信号的分步采集，3种模式100 Hz平均偏差分别为0.028 02 nm、0.018 14 nm、0.010 9 nm。研究结果表明，在单位电压（1 V）下，相对于静态标定，误差降低45%以上，提高解调精度并且降低校正成本，同时解决参考与待测波长数值过近时容易导致的误判问题。
To address the issue of drift and the high cost of calibration in the F-P filtering demodulation method, this paper had developed a F-P filter multi-channel resonance demodulation system using the FPGA and the fiber optic switch. The system utilizes DDS signals to generate specific triangular wave driving voltages and achieves dynamic calibration of wavelength-time by linking multiple-dimensional reference FBGs in series. Three dynamic calibration modes, including linear and quadratic relationships, are set. The FPGA-controlled fiber optic switch enables fast channel switching of modes and step-by-step acquisition of reference wavelength and wavelength signal to be measured. he average deviations in the three modes are 0.028 02 nm, 0.018 14 nm, and 0.010 9 nm, respectively, at a frequency of 100 Hz. The research results indicate that, under a unit voltage of 1 V, the deviation is reduced by over 45% compared to static calibration, improving the demodulation accuracy Improves demodulation accuracy, reduces calibration costs and addressing the issue of misjudgment caused by the proximity of the reference and measured wavelengths.
潘睿智,冯艳,张洪溥,王昊祥,张华.基于DDS信号和插值法的FBG解调系统研究[J].电子测量技术,2023,46(24):6-13
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