Detail publikace

A Review of Measurement Calibration and Interpretation for Seepage Monitoring by Optical Fiber Distributed Temperature Sensors

GHAFOORI, Y. VIDMAR, A. ŘÍHA, J. KRYŽANOWSKI, A.

Originální název

A Review of Measurement Calibration and Interpretation for Seepage Monitoring by Optical Fiber Distributed Temperature Sensors

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

Seepage flow through embankment dams and their sub-base is a crucial safety concern that can initiate internal erosion of the structure. The thermometric method of seepage monitoring employs the study of heat transfer characteristics in the soils, as the temperature distribution in earth-filled structures can be influenced by the presence of seepage. Thus, continuous temperature measurements can allow detection of seepage flows. With the recent advances in optical fiber temperature sensor technology, accurate and fast temperature measurements, with relatively high spatial resolution, have been made possible using optical fiber distributed temperature sensors (DTSs). As with any sensor system, to obtain a precise temperature, the DTS measurements need to be calibrated. DTS systems automatically calibrate the measurements using an internal thermometer and reference section. Additionally, manual calibration techniques have been developed which are discussed in this paper. The temperature data do not provide any direct information about the seepage, and this requires further processing and analysis. Several methods have been developed to interpret the temperature data for the localization of the seepage and in some cases to estimate the seepage quantity. An efficient DTS application in seepage monitoring strongly depends on the following factors: installation approach, calibration technique, along with temperature data interpretation and post-processing. This paper reviews the different techniques for calibration of DTS measurements as well as the methods of interpretation of the temperature data.

Klíčová slova

optical fiber DTS; temperature; seepage; calibration; data interpretation

Autoři

GHAFOORI, Y.; VIDMAR, A.; ŘÍHA, J.; KRYŽANOWSKI, A.

Vydáno

6. 10. 2020

Nakladatel

MDPI

Místo

4052 Basel, Switzerland

ISSN

1424-8220

Periodikum

SENSORS

Ročník

20

Číslo

19

Stát

Švýcarská konfederace

Strany od

1

Strany do

23

Strany počet

23

URL

https://www.mdpi.com/1424-8220/20/19/5696

Plný text v Digitální knihovně

http://hdl.handle.net/11012/195720

BibTex

@article{BUT165993,
  author="Yaser {Ghafoori} and Andrej {Vidmar} and Jaromír {Říha} and Andrej {Kryžanowski}",
  title="A Review of Measurement Calibration and Interpretation for Seepage Monitoring by Optical Fiber Distributed Temperature Sensors",
  journal="SENSORS",
  year="2020",
  volume="20",
  number="19",
  pages="1--23",
  doi="10.3390/s20195696",
  issn="1424-8220",
  url="https://www.mdpi.com/1424-8220/20/19/5696"
}