基于伸缩杆结构的光纤光栅多级应变传感器

doi:10.12068/j.issn.1005-3026.2018.08.001

东北大学学报:自然科学版 ›› 2018, Vol. 39 ›› Issue (8): 1065-1069.DOI: 10.12068/j.issn.1005-3026.2018.08.001

• 信息与控制 • 下一篇

基于伸缩杆结构的光纤光栅多级应变传感器

赵勇，何文正，汤永超

(东北大学信息科学与工程学院，辽宁沈阳110819)

收稿日期:2017-03-27 修回日期:2017-03-27 出版日期:2018-08-15 发布日期:2018-09-12
通讯作者: 赵勇
作者简介:赵勇(1973-)，男，辽宁沈阳人，东北大学教授，博士生导师.冯明杰(1971-)，男，河南禹州人，东北大学副教授; 王恩刚(1962-)，男，辽宁沈阳人，东北大学教授，博士生导师.
基金资助:
国家杰出青年科学基金资助项目(61425003)；国家级大学生创新创业训练计划项目(201710145058).国家自然科学基金资助项目(51171041).

Fiber Bragg Grating Multi-level Strain Sensor Based on the Structure of Extendable Rod

ZHAO Yong， HE Wen-zheng， TANG Yong-chao

School of Information Science & Engineering， Northeastern University， Shenyang 110819， China.

Received:2017-03-27 Revised:2017-03-27 Online:2018-08-15 Published:2018-09-12
Contact: ZHAO Yong
About author:-
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摘要/Abstract

摘要： 为了扩大光纤光栅称重传感器的测量范围，提高传感器的测量精度，在理论上设计了一套新型的可以扩大测量范围、提高测量精度的系统，并通过Matlab平台仿真.结果表明，单级传感器在波长变化小于0.2nm时具有良好的线性度.该系统将双光纤光栅串联，分别粘贴于等强度梁的上下两侧，采用光强解调的方法实现对光纤光栅输出信号的解调;在解调基础上，利用伸缩杆结构传递载荷重力.实验测试结果验证了多级应变测量的可行性，在保证分辨力的同时扩大了传感器的测量范围.

关键词: 光纤光栅, 称重传感器, 多级传感, 测量精度, 光强解调

Abstract: In order to expand the measurement range of optical fiber grating load cell and improve the measurement accuracy of the sensor， a novel multi-level load cell was designed theoretically and simulated by Matlab. Simulation result showed that the single sensor had good linearity when the fluctuation of wavelength is below 0.2nm. In this system， the dual-optical fiber gratings were connected in series with the upper and lower sides of the equal-strength beam. And the output signal of the optical fiber grating was demodulated by the method of light intensity demodulation. By the extendable rod structure， the sensor becomes multi-level sensing， then the measurement range was broadened unchanging its measurement resolution. The feasibility of the proposed sensor was verified by experimental results.

Key words: fiber Bragg grating, load sensor, multi-level sensing, measurement accuracy, light intensity demodulation

中图分类号:

TP212.1

赵勇，何文正，汤永超. 基于伸缩杆结构的光纤光栅多级应变传感器[J]. 东北大学学报:自然科学版, 2018, 39(8): 1065-1069.

ZHAO Yong， HE Wen-zheng， TANG Yong-chao. Fiber Bragg Grating Multi-level Strain Sensor Based on the Structure of Extendable Rod[J]. Journal of Northeastern University Natural Science, 2018, 39(8): 1065-1069.

参考文献

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基于伸缩杆结构的光纤光栅多级应变传感器

Fiber Bragg Grating Multi-level Strain Sensor Based on the Structure of Extendable Rod

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