实验科学与技术2024，Vol.22Issue(5)：129-134,6.DOI:10.12179/1672-4550.20220561
基于FPGA的光纤声波传感实验装置
FPGA-based Fiber-optic Acoustic Sensing Experimental Device
摘要
Abstract
An optical fiber Fabry-Perot(F-P)acoustic sensing experimental device based on spectral demodulation is designed.The device is mainly composed of a superluminescent light-emitting diode(SLED)light source,a high-speed spectrum module and a field programmable gate array(FPGA)based signal processing circuit.The air gap between the end face of the single-mode fiber and the sensitive diaphragm constitutes the F-P cavity,which converts the acoustic signal into the variation of the cavity length.The interference spectrum signal is collected at a high speed by FPGA,which demodulates the cavity length in real time.As a result,the high-sensitivity detection of acoustic signals is realized.The experimental teaching device involves many contents such as optical fiber sensing,optical interference,photoelectric detection,FPGA,and digital signal processing,and is suitable for professional teaching experiments of optoelectronic senior undergraduates.关键词
现场可编程门阵列/光纤声波传感/法布里-珀罗干涉仪/光谱解调/实验教学Key words
FPGA/fiber-optic acoustic sensing/Fabry-Perot interferometer/spectral demodulation/experimental teaching分类
信息技术与安全科学引用本文复制引用
陈珂,张广寅,宫振峰,陶鹏程,梅亮,王晓娜,韩秀友..基于FPGA的光纤声波传感实验装置[J].实验科学与技术,2024,22(5):129-134,6.基金项目
大连理工大学教学改革基金项目(YB2022016) （YB2022016）
大连理工大学教育教学改革基金重点项目(ZD2021006) （ZD2021006）
辽宁省普通高等教育本科教学改革项目(20221014173) （20221014173）
教育部产学合作协同育人项目(202102153045) （202102153045）
光电教指分委2020年"一流课程与一流专业建设"教育教学研究项目(2020SYL9) （2020SYL9）
国家自然科学基金(62275040,61905034). （62275040,61905034）
