Temperature-independent fiber-Bragg-grating-based atmospheric pressure sensor

Temperature-independent fiber-Bragg-grating-based atmospheric pressure sensor
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基于光纤布拉格光栅的温度无关大气压力传感器

DOI:
10.1016/j.optcom.2017.10.036
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发表时间:
2018-03
影响因子:
2.4
通讯作者:
Li Luming
Li Luming
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Zhang Zhiguo;Shen Chunyan;Li Luming

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大气压力是现代飞行器实现高度测量的重要手段,也是气象遥测系统中不可缺少的参数。随着社会的发展,人们越来越关注天气。准确便捷的气压参数可以为气象分析提供有力的支持。然而,目前应用的电子大气压力传感器存在若干缺点。通过分析和讨论,提出了一种创新的结构设计方案,即采用真空膜盒和基于等强度悬臂梁结构的温度无关应变传感器以及光纤布拉格光栅(FBG)传感器。实验验证了该气压传感器装置具有结构简单、无需外接电源、自动温度补偿、灵敏度高的特点。该传感器系统具有良好的灵敏度,可达100 nm/MPa,重复性好。此外,该器件表现出期望的滞后。
Atmospheric pressure is an important way to achieve a high degree of measurement for modern aircrafts, moreover, it is also an indispensable parameter in the meteorological telemetry system. With the development of society, people are increasingly concerned about the weather. Accurate and convenient atmospheric pressure parameters can provide strong support for meteorological analysis. However, electronic atmospheric pressure sensors currently in application suffer from several shortcomings. After an analysis and discussion, we propose an innovative structural design, in which a vacuum membrane box and a temperature-independent strain sensor based on an equal strength cantilever beam structure and fiber Bragg grating (FBG) sensors are used. We provide experimental verification of that the atmospheric pressure sensor device has the characteristics of a simple structure, lack of an external power supply, automatic temperature compensation, and high sensitivity. The sensor system has good sensitivity, which can be up to 100 nm/MPa, and repeatability. In addition, the device exhibits desired hysteresis.
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影响因子: 4.3
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