Fiber-Optic Pyrometer with Optically Powered Switch for Temperature Measurements

Vázquez, Carmen; Pérez-Prieto, Sandra; López-Cardona, J. D.; Tapetado, A.; Blanco, E; Moreno‐López, J.; Montero, D. S.; Lallana, Pedro Contreras

doi:10.3390/s18020483

Cited by 20 publications

(12 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The PF GI-POF with 120µm core diameter system started melting at around 528 mW of optical power injected into the fiber, in agreement with [6]. The PoF prototypes fed various remote sensor nodes in hazardous environments [5] and IoT applications [8], or an optical switch in a pyrometer [10].…”

Section: Experimental Set-up and Resultsmentioning

confidence: 75%

Power over Fiber in Radio over Fiber Systems in 5G Scenarios

Vázquez

López-Cardona

Montero

et al. 2019

2019 21st International Conference on Transparent Optical Networks (ICTON)

View full text Add to dashboard Cite

show abstract

Section: Experimental Set-up and Resultsmentioning

confidence: 75%

Power over Fiber in Radio over Fiber Systems in 5G Scenarios

Vázquez

López-Cardona

Montero

et al. 2019

2019 21st International Conference on Transparent Optical Networks (ICTON)

View full text Add to dashboard Cite

show abstract

“…Absorption of such radiation causes an increase in electrical conductivity of the material and corresponding decrease in the detector resistance. This effect enables the system to measure radiation reaching the detector [8].…”

Section: Pyrometer System Designmentioning

confidence: 99%

Temperature Measurement Method by Infrared Radiation Pyrometer Using Chopped Broadband Radiation -Signal Conditioning and Acquisition Elements Design

Aminu¹,

Yakubu²,

Baraza³

et al. 2020

IJASRE

View full text Add to dashboard Cite

In this paper, we report the design of a signal conditioning and acquisition elements of a chopped broadband radiation pyrometer for measuring temperature in the range of 900 0 C to 1200 0 C. We also report the selection of a suitable chopping frequency within the physical properties of the system and provided the calibration characteristics for the pyrometer. Based on the results, it was found that the designed signal conditioning circuit was able to produce an output voltage of 0.24 -0.60 V corresponding to the temperature measuring range of the pyrometer. This was achieved through the use of a phase-sensitive detector (PSD) in the form of a lock-in amplifier in combination with a low pass filter. A suitable chopping frequency of 30 Hz was chosen for the shutter pulse so that the detector can have sufficient time to settle before the next shutter pulse transition. Finally, the result also shows that the calibration characteristic of the pyrometer presumes an approximately linear relationship.

show abstract

“…See http://www.ieee.org/publications_standards/publications/rights/index.html for more information. An additional element, an optical switch that is powered by light, is used in [15] along with low-noise photodetectors and high-gain transimpedance amplifiers, to compensate for undesirable offsets in the receiving signal, but with the same limited dynamic range and spatial resolution of [14], [22]. With the data provided in those works we estimate the measuring area, related with the spatial resolution, of each pyrometer, it being in the range of 77 to 1010 m at a distance of 25 m.…”

Section: Introductionmentioning

confidence: 99%

High Spatial Resolution Optical Fiber Two Color Pyrometer With Fast Response

2021

View full text Add to dashboard Cite

Among the different temperature measurement techniques providing micrometre resolution none of them provide fast response and easy access to close distances to the target surface in difficult to access areas. Optical fiber pyrometers provide that access but previous works used large optical fibers with numerical apertures limiting the minimum spot size to be measured. In this study, we propose a novel two colour optical fiber pyrometer based on a low diameter and numerical aperture optical fiber, low-noise photodetectors and high-gain transimpedance amplifiers with a high spatial resolution in the micrometre range and fast response. Using standard optical fibers and related devices provides also a low-cost system. The developed pyrometer presents a high spatial resolution of 16 µm for a target surface at 25 µm with a wide temperature range of 300 to 1200°C it being the highest spatial resolution for this kind of temperature systems. Theoretical analysis and measurements for different pyrometer configurations are reported. This study will help further the microthermography applications in machining processes.

show abstract

Fiber-Optic Pyrometer with Optically Powered Switch for Temperature Measurements

Cited by 20 publications

References 23 publications

Power over Fiber in Radio over Fiber Systems in 5G Scenarios

Power over Fiber in Radio over Fiber Systems in 5G Scenarios

Temperature Measurement Method by Infrared Radiation Pyrometer Using Chopped Broadband Radiation -Signal Conditioning and Acquisition Elements Design

High Spatial Resolution Optical Fiber Two Color Pyrometer With Fast Response

Contact Info

Product

Resources

About