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| Titel |
Autonomous distributed temperature sensing for long-term heated applications in remote areas |
| VerfasserIn |
A.-M. Kurth, N. Dawes, J. Selker, M. Schirmer |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
2193-0856
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| Digitales Dokument |
URL |
| Erschienen |
In: Geoscientific Instrumentation, Methods and Data Systems ; 2, no. 1 ; Nr. 2, no. 1 (2013-02-07), S.71-77 |
| Datensatznummer |
250017340
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| Publikation (Nr.) |
 copernicus.org/gi-2-71-2013.pdf |
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| Zusammenfassung |
| Distributed temperature sensing (DTS) is a fiber-optical method enabling
simultaneous temperature measurements over long distances. Electrical
resistance heating of the metallic components of the fiber-optic cable
provides information on the thermal characteristics of the cable's
environment, providing valuable insight into processes occurring in the
surrounding medium, such as groundwater–surface water interactions, dam
stability or soil moisture. Until now, heated applications required direct
handling of the DTS instrument by a researcher, rendering long-term
investigations in remote areas impractical due to the often difficult and
time-consuming access to the field site. Remote control and automation of
the DTS instrument and heating processes, however, resolve the issue with
difficult access. The data can also be remotely accessed and stored on a
central database. The power supply can be grid independent, although
significant infrastructure investment is required here due to high power
consumption during heated applications. Solar energy must be sufficient even
in worst case scenarios, e.g. during long periods of intense cloud cover, to
prevent system failure due to energy shortage. In combination with storage
batteries and a low heating frequency, e.g. once per day or once per week
(depending on the season and the solar radiation on site), issues of high
power consumption may be resolved. Safety regulations dictate adequate
shielding and ground-fault protection, to safeguard animals and humans from
electricity and laser sources. In this paper the autonomous DTS system is
presented to allow research with heated applications of DTS in remote areas
for long-term investigations of temperature distributions in the
environment. |
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