Experimental analysis and demonstration of a low cost fibre optic temperature sensor system for engineering applications

Rajan, Ginu; Semenova, Yuliya; Mathew, Jinesh; Farrell, Gerald

doi:10.1016/j.sna.2010.07.010

Cited by 13 publications

(5 citation statements)

References 14 publications

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“…By calibrating multiple sets of strain gauges, the sensitivity coefficient variation data of the strain gauges at different temperatures are obtained, and the sensitivity coefficient data of multiple sets of strain gauges are fitted to obtain the sensitivity coefficient variation curve with temperature, as shown in The corrected measurement strain can be obtained as shown in Eqn. (14).…”

Section: Fig 10sensitivity Coefficients and Their Fitting Curves At D...mentioning

confidence: 99%

“…Fix the strain gauge on the surface of the calibration beam, heat it to the specified temperature, and after the temperature is stable, load the calibration beam to a constant 1000με within 15s, measure it within 1min, and then record the strain every 10min for a total of 1h [13,14]. The difference between the recorded value of each strain and the first strain is made, and the maximum difference is the creep at this temperature.…”

Section: Fig 10sensitivity Coefficients and Their Fitting Curves At D...mentioning

confidence: 99%

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Contact High Temperature Strain Automatic Calibration and Precision Compensation Technology

Jia

Wang

Zhang

2022

JAIT

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In order to solve the problem of contact high temperature strain precision measure-ment, this paper established an automatic calibration device for high temperature strain gauges. The temperature of the high temperature furnace was automatically con-trolled by the temperature control device. The electric cylinder was driven by the servo motor to apply the load to the calibration beam. The output signal of the high temperature strain gauge, the thermocouple signal and the displacement signal of the grat-ing ruler were collected at the same time. The deformation measurement results obtained after temperature correction were used to calculate the theoretical mechanical strain, which were fed back to control the loading action to complete the automatic calibration process. Based on the above calibration device, the high temperature strain measurement accuracy correction software was developed to calibrate the high temperature strain gauge with multi-parameters, and the curves of sensitivity coefficient, thermal output, zero drift and creep characteristics with temperature were obtained, and a strain measurement accuracy compensation model was established. The high temperature strain measurement experiment was carried out to verify that the modified model can meet the requirements in each temperature range.

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Section: Fig 10sensitivity Coefficients and Their Fitting Curves At D...mentioning

confidence: 99%

Section: Fig 10sensitivity Coefficients and Their Fitting Curves At D...mentioning

confidence: 99%

Contact High Temperature Strain Automatic Calibration and Precision Compensation Technology

Jia

Wang

Zhang

2022

JAIT

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“…Since optic fiber sensing technology was first introduced in the 1970s, it has been developed with a rapid pace in recent years. Nowadays, this technology has been widely used in many kinds of sensing fields such as displacement sensing, velocity sensing, temperature sensing, stress sensing, and so on.…”

Section: Introductionmentioning

confidence: 99%

A multichannel optic fiber sensing system based on hybrid Sagnac structure

Wang

2019

Micro & Optical Tech Letters

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We proposed a multichannel optic fiber sensing system based on hybrid Sagnac structure to convert phase changes of light transmitting in optic fiber caused by vibrations to be detected into intensity changes of interference signals. By using the differential demodulation method, the originally applied vibration signal can be retrieved for further signal analysis. The auxiliary modulation method was introduced into this system so that even tiny vibration signals less than one period can also be detected precisely since all the original signals would be carried by the high frequency and large modulation signals. In the signal retrieve algorithm, we also added a response smoothing transform algorithm to improve the smoothness of the system's frequency response. Besides, in association with wavelength division multiplexer, this sensing system can realize multipoints' vibration detection. By designing the spatial arrangement of sensing fiber array according to application scenarios, this system can realize monitoring and positioning vibration sources with appropriate algorithms.

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“…The simultaneous measurement of Bragg wavelengths related to the different grating regions allows the measurement of the RI and as a result temperature. Experimental analysis and demonstration of a low cost fiber optic temperature sensor system for engineering applications is given in Ref 15…”

Section: Introductionmentioning

confidence: 99%

“…. The T sensor explained in Ref 15. is based on a macro‐bend single‐multi‐single mode fiber arrangement fiber loop employed in a power measurement scheme.…”

Section: Introductionmentioning

confidence: 99%

Investigation of bending and temperature effects in optical fibers

Golnabi

Sharifian

2012

Micro & Optical Tech Letters

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Fiber bending and temperature loss mechanisms in plastic optical fibers are reported.A simple arrangement is used to monitor the fiber bending and temperature by output power variation. Powers in the fibers in bend‐free situation at room temperature and under rolling deforming force at different water bath temperatures (20–60°C) are measured and compared. Reported arrangements can be used as a temperature sensor. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:82–86, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27271

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Experimental analysis and demonstration of a low cost fibre optic temperature sensor system for engineering applications

Cited by 13 publications

References 14 publications

Contact High Temperature Strain Automatic Calibration and Precision Compensation Technology

Contact High Temperature Strain Automatic Calibration and Precision Compensation Technology

A multichannel optic fiber sensing system based on hybrid Sagnac structure

Investigation of bending and temperature effects in optical fibers

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