基于光学互相关解调的膜片式光纤脉搏波传感器
Diaphragm-Based Optical Fiber Pulse Wave Sensor Based on Optical Cross-Correlation Demodulation
施彦旭 1宋泽宇 1童信鑫 1杨光1
作者信息
- 1. 华北电力大学数理系,河北 保定 071003
- 折叠
摘要
设计了一种膜片式光纤脉搏波传感器,由黄铜膜片与光纤端面构成的法布里-珀罗(F-P)腔作为传感探头,采用平板玻璃和线阵电荷耦合元件(CCD)构成光学解调系统,建立了互相关原理解调的数学模型.实验中,利用搭建好的系统对不同对象在不同状态下的脉搏波进行了实时测量.结果表明,采集到的脉搏波图像特征点明显,与经典脉搏波理论保持一致.该研究有助于推进数字脉诊技术的发展.
Abstract
We propose a diaphragm-based optical fiber sensor for pulse wave monitoring.A Fabry-Perot(F-P)cavity composed of a brass diaphragm and fiber end is utilized to form a sensor head.A parallel flat glass and linear charge-coupled device(CCD)are used as an optical demodulator.The mathematical model of optical cross-correlation demodulation is established.In an experiment,the monitoring system enables the real-time measurement of pulse waves from different subjects in different states.The obtained pulse wave,which has distinct feature points,is consistent with classical pulse wave theory.Hence,the research is significant for the development of digital pulse diagnosis technology.
关键词
光纤光学/法布里-珀罗腔/互相关解调/脉搏波/光纤传感Key words
fiber optics/Fabry-Perot cavity/cross-correlation demodulation/pulse wave/optical fiber sensing引用本文复制引用
出版年
2024
NETL
NSTL
万方数据