基于FMCW干涉度和DSP算法的多点温度的灵敏检测
Chengyu Mo1, Yuqiang Yang1,2, Xiaoguang Mu1,2
1Research Center of Guangdong Smart Oceans Sensor Networks and Equipment Engineering, Guangdong Ocean University, Zhanjiang 524088, China.
Nanomaterials (Basel, Switzerland)
|October 28, 2025
概括
这项研究引入了一种新的海水温度检测系统,使用虚拟的维尼尔效应与多重的法布里-佩罗腔和光学FMCW干扰度. 这种方法提高了灵敏度和空间分辨率,用于精确的海洋监测.
科学领域:
- 光电学是指光电子产品.
- 光纤传感传感器是指光纤传感器.
- 海洋技术 海洋技术
背景情况:
- 准确的海水温度监测对于海洋学研究和气候研究至关重要.
- 传统的光纤传感系统在复杂化,空间定位和灵敏度放大方面面临着挑战.
- 现有的增强传感器灵敏度的方法往往需要复杂的物理配置.
研究的目的:
- 开发一种高灵敏度的多点海水温度检测系统.
- 为了克服光学频率调制连续波 (FMCW) 系统中非线性频率扫描的局限性.
- 为加强海洋环境监测提供准分布式光学传感.
主要方法:
- 使用光学FMCW干扰度的多重Fabry-Perot (FP) 腔.
- 实施了一个软件补偿方法来解决非线性频率扫描.
- 采用数字信号处理 (DSP) 和光谱解调来计算实现虚拟的维尼尔效应.
主要成果:
- 实现了82.3米的光纤连接,空间分辨率为23.9微米.
- 证明了放大温度的灵敏度,范围从 -269.78 pm/°C到 -280.67 pm/°C.
- 与单个传感器相比,获得了3.32,4.93和6.13的灵敏度放大因子.
结论:
- 通过计算实现的虚拟维尼尔效应消除了对物理参考数组的需求.
- 该系统有效地实现了多重复合,空间定位和从多个光纤传感器发出的弱信号的放大.
- 这项技术在海洋环境中提供了高精度,准分布式光学传感的巨大潜力.
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