A low cost wide range plane-in-out displacement measurement sensor based on twisted macro-bend coupling method

Ghaffar, Abdul; Liu, Wenyi; Chhattal, Muhammad; Hou, Yuguang; Li, Yongwei; Mehdhi, Mujahid; Ahmed, Javed; Li, Xiuyuan

doi:10.1016/j.ijleo.2020.164364

Cited by 7 publications

(1 citation statement)

References 22 publications

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“…All these advantages had extended the applications of fiber optical sensors (FOS) in many engineering applications, such as in the landing of drone [5], aircraft flight attitude control [6], launching of military weapons [7], structural measurements [8], and wind tunnel model tests [9]. In these applications, it is difficult to use traditional measurement sensors based on the capacitive or the magnetic effect because precision, accuracy cannot be compromised [10] To date, several contact and non-contact types sensors have been designed for the measurement of physical quantities such as pressure [11], displacement [12], angle [13], temperature [14], level monitoring [15], and strain [16]. Most of the reported angle sensor's working principle is based on different mechanisms such as capacitive [17][18][19][20], magnetic [21], and optical-fiber [22,23].…”

Section: Introductionmentioning

confidence: 99%

Plastic Optical Fiber Angle Sensor for 1-D and 2-D Based On Cascading Of TMBC

Ghaffar

Chhattal

Mehdi

et al. 2022

Preprint

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The developed angle sensors are usually used for either clockwise or an anti-clockwise direction. Here, we present a relatively new setup of two angle sensors (1-D and 2-D) for independent and simultaneous clock and anti-clockwise rotation measurements. The proposed sensor is based on the twisted macro-bend coupling method (TMBC), in which two fibers are twisted and bent. The two-angle sensors are presented in which sensor-1 consists of a single twisted bend and sensor-2 contain two twisted bends on a single transmitting fiber. The angle measurement relies on the coupling of macro-bend loss. The stepper motor is used to drag the twisted fiber, resulting in a change in the bending radius that increases or decreases the macro-bend loss. A novel cascading method is introduced in the TMBC method for the sensor-2 and, two stepper motors are used in the second experiment. To prove the practicality, several test scenarios are conducted for both sensor configurations. The experimental results show that sensor-1 can measure angle ±180º, whereas the full clock and anti-clockwise cycle are achieved through sensor-2, having a measurement range is ±360º. Therefore, the proposed sensor can be a potential means for accurate angle measurement in industrial applications.

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