Optical fiber‐based macrobend free air flow sensor using a hinge joint: A preliminary report

Vijayan, Anu; Thakare, Vishal; Karekar, R.N.; Aiyer, R. C.

doi:10.1002/mop.23746

Cited by 15 publications

(4 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It can also be used for measuring any force, e.g. for magnetic force, by using a small magnet at the end of the beam, or for electric force by using the beam as one plate or for flow force [22] by attaching a wide sheet at the end of the beam. To the best of our knowledge, this type of simple macrobending POF is being reported for the first time for weighing or force sensor applications.…”

Section: Discussionmentioning

confidence: 99%

An optical fiber weighing sensor based on bending

Vijayan¹,

Gawli²,

Kulkarni³

et al. 2008

Meas. Sci. Technol.

View full text Add to dashboard Cite

The bending of plastic optical fiber (POF) is used to develop a weighing sensor by fully gluing POF onto a strip of spring steel used as a clamped beam for sensing, keeping the glued fiber either on the top or bottom side of the beam. Force, in the form of weight, is applied to the beam in two ways: by attaching a pan (i) at one of the ends of the beam or (ii) at the center of the beam, with proper clamping. The known weight is added in the pan for calibration purposes. The output light intensity of the fiber, measured as voltage, changes practically linearly with increasing weight up to a certain limit due to the macrobending of POF. It is found that though elongative bending decreases the output intensity, compressive bending gives a reverse effect. The response time for sensing is found to be approximately 5–7 s with larger recovery time (⩽1 min). No noticeable hysteresis is observed. The thickness and length of the beam are varied and optimized. The sensor specifications can be tailored by this to some extent. A minimum weight of 5 g and a maximum of ∼1900 g could be measured in a linear range for the beam-length used.

show abstract

Section: Discussionmentioning

confidence: 99%

An optical fiber weighing sensor based on bending

Vijayan¹,

Gawli²,

Kulkarni³

et al. 2008

Meas. Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…∆ stands for the variation of the fiber grating center wavelength; 11 p and 12 p stands for the photoelastic coefficients [6,7].…”

Section: Flow Measurement Theorymentioning

confidence: 99%

A Circular Target Flow Measurement System

Wang¹,

Wang²,

Pan

2013

AMM

View full text Add to dashboard Cite

Based on the relation between the wavelength shift of sensing FBG and the strain, a flow measuring device of the circular target binding Fiber Bragg Grating with the cantilever is designed and the mathematical model based on a circular target flow measurement system is established. Through the flow experiment, we can get the flow test result. The experimental data error analysis can be concluded to verify the feasibility and precision of the design.

show abstract

“…R. P. Hu [ 6 ] proposed a new type of optic flowmeter system based on the bending loss of an optic fiber. A. Vijayan [ 7 ] explored the effective use of optical fiber for air flow measurement. He proved the feasibility of new concept of hinge sensor for flow.…”

Section: Introductionmentioning

confidence: 99%

Theoretical and Experimental Study on Wide Range Optical Fiber Turbine Flow Sensor

Guo

2016

Sensors

View full text Add to dashboard Cite

In this paper, a novel fiber turbine flow sensor was proposed and demonstrated for liquid measurement with optical fiber, using light intensity modulation to measure the turbine rotational speed for converting to flow rate. The double-circle-coaxial (DCC) fiber probe was introduced in frequency measurement for the first time. Through the divided ratio of two rings light intensity, the interference in light signals acquisition can be eliminated. To predict the characteristics between the output frequency and flow in the nonlinear range, the turbine flow sensor model was built. Via analyzing the characteristics of turbine flow sensor, piecewise linear equations were achieved in expanding the flow measurement range. Furthermore, the experimental verification was tested. The results showed that the flow range ratio of DN20 turbine flow sensor was improved 2.9 times after using piecewise linear in the nonlinear range. Therefore, combining the DCC fiber sensor and piecewise linear method, it can be developed into a strong anti-electromagnetic interference(anti-EMI) and wide range fiber turbine flowmeter.

show abstract

Optical fiber‐based macrobend free air flow sensor using a hinge joint: A preliminary report

Cited by 15 publications

References 10 publications

An optical fiber weighing sensor based on bending

An optical fiber weighing sensor based on bending

A Circular Target Flow Measurement System

Theoretical and Experimental Study on Wide Range Optical Fiber Turbine Flow Sensor

Contact Info

Product

Resources

About