Design and Performance Analysis of a Torque-Based Optical Fiber Flow Sensor
Journal Title: Precision Mechanics & Digital Fabrication - Year 2024, Vol 1, Issue 2
Abstract
A torque-based optical fiber flow sensor has been designed and experimentally tested to assess its potential for fluid flow measurement. The sensor utilizes an optical fiber strength modulation principle to achieve flow detection. Detailed attention is given to the design of the sensor structure, including the sensor probe and fiber bundle probe, and the working principle of the torque-based flow sensor is systematically described. A theoretical model of the sensor is established, considering key parameters such as torque (m), radius (r), sensor joint stiffness (SJ), refractive index (n), and radius of curvature (R), which significantly affect its detection performance. Simulations are conducted to obtain Q-M curves under varying parameter conditions, revealing the relationship between sensor output and fluid flow rate. A gas flow detection experiment is subsequently performed on a custom-built experimental platform to evaluate the sensor’s practical performance. The results indicate that the sensor output decreases monotonically with increasing fluid flow for different parameter settings, demonstrating a good linear response within a specific detection range. It is found that the sensitivity of the sensor is influenced by the selection of critical performance parameters and the characteristics of the fluid being measured. For gas flow detection, the sensor output voltage shows an approximately linear decrease with the increase in gas flow. The comparison between simulation and experimental data confirms that both exhibit similar trends, thereby validating the sensor’s applicability in fluid flow detection. This study highlights the potential of torque-based optical fiber flow sensors for accurate and reliable fluid flow measurements.
Authors and Affiliations
Hao Hu, Liqiong Zhong
Keywords
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- EP ID EP752482
- DOI https://doi.org/10.56578/pmdf010204
- Views 37
- Downloads 0
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