一种薄膜式的光纤压力传感技术

王昭; 吴祖堂; 温广瑞; 杨军; 陈立强; 史国凯

doi:10.11883/bzycj-2018-0091

一种薄膜式的光纤压力传感技术

doi: 10.11883/bzycj-2018-0091

王昭^{1, 2,},
吴祖堂^2, ,,
温广瑞¹,
杨军²,
陈立强²,
史国凯²

1.
西安交通大学机械工程学院，陕西西安 710049
2.
西北核技术研究所，陕西西安 710024

详细信息

作者简介:
王　昭（1985－　），男，博士研究生，工程师，wangzhao@nint.ac.cn

通讯作者:
吴祖堂（1969－　），男，博士，高级工程师，wuzutang@nint.ac.cn

中图分类号: O389; TP212
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出版历程
- 收稿日期: 2018-03-21
- 修回日期: 2018-07-13
- 网络出版日期: 2019-07-25
- 刊出日期: 2019-06-01

A fiber optic pressure sensing technology based on thin diaphragm structure

WANG Zhao^{1, 2
,},
WU Zutang^{2
, ,},
WEN Guangrui¹,
YANG Jun²,
CHEN Liqiang²,
SHI Guokai²

1.
School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, China
2.
Northwest Institute of Nuclear Technology, Xi’an 710024, Shaanxi, China

摘要

摘要: 提出了一种薄膜式的光纤压力传感技术，用于测量冲击波的反射超压峰值。该技术通过建立待测压力与薄膜加速度之间的正比例关系来获取压力。结合Fabry-Perot腔光学干涉测量技术，设计并加工实现了一种光纤压力传感器。开展数值模拟和激波管实验，结果证明，该压力获取技术可行，且该技术具有无须标定、制作简单、成本低廉、测量精度高、响应时间快的优点。
- 反射超压 /
- 光纤压力传感器 /
- F-P腔技术 /
- 冲击波
Abstract: A novel fiber optic pressure sensing technology is presented to obtain the peak reflected pressure of shock waves. This technology is based on the Newton's second law and the pressure relates directly to the acceleration of a thin diaphragm. The acceleration is detected by an interferometric measurement of the displacement using a Fabry-Perot cavity technology. Both numerical simulation and shock tube experiments prove that the pressure sensing technology is feasible. And this technology has several advantages including no calibration required, ease of manufacture, low cost, high precision and fast response times.
- reflection overpressure /
- fiber optics pressure sensor /
- Fabry-Perot technology /
- shock waves

HTML全文

图 1 光纤压力传感器的原理图

Figure 1. Sketch of the optical fiber pressure principle

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图 2 光纤压力传感器

Figure 2. The optical fiber pressure sensor

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图 3 光纤压力测量系统示意图

Figure 3. Schematic of the pressure measurement system

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图 4 数值模拟各测点速度波形

Figure 4. Velocity curves of the gauges in simulation

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图 5 数值模拟各测点加速度波形

Figure 5. Acceleration curves of the gauges in simulation

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图 6 不同加载压力下薄膜的速度

Figure 6. Velocity of the diaphragm at different pressures

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图 7 激波管实验原理图

Figure 7. Schematic diagram of the shock tube experiment

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图 8 激波管实验中的光学信号

Figure 8. The optical signals of the shock tube experiment

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图 9 激波管实验压力数据波形

Figure 9. The pressure curves of the reference sensor and the optical sensor

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图 10 数值模拟和激波管实验的速度时程曲线

Figure 10. Histories of velocity between the simulation and shock tube experiment

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图 11 不同工况下的速度时程曲线

Figure 11. Histories of velocity under different conditions

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