
Proceedings Paper
Fiber optic liquid level sensor system for aerospace applicationsFormat | Member Price | Non-Member Price |
---|---|---|
$17.00 | $21.00 |
Paper Abstract
Detection of the liquid level in fuel tank becomes a critical element for the safety and efficiency in aerospace
operations. Two liquid level sensing techniques are presented in this paper. The first technique is based on
optical fiber Long Period Gratings (LPG). In this system, the full length of a specially fabricated fiber is the
body of the probe because the length of the sensing fiber that is submerged in the liquid can be detected by
the interrogation system. The second system based on Total Internal Reflection (TIR) uses optical fibers to
guide light to and from an array of point probes. These probes are specially fabricated, miniature optical
components which reflects a substantial amount of light back into the lead fiber when the probe is gas but
almost no light when it is in liquid. A detailed theoretical study by computer simulation was carried out on
these two techniques in order to determine which technique was more suitable for experimental investigation.
The study revealed that although the first technique may provide more potential benefits in terms of weight
and easy installation; a number of technical challenges make it not suitable for a short term solution. The
second, probe array based technique, on the other hand, is more mature technically. The rest of the research
program was therefore focused on the experimental investigation of the probe array detection technique and
the test results are presented in this paper.
Paper Details
Date Published: 5 September 2014
PDF: 15 pages
Proc. SPIE 9202, Photonics Applications for Aviation, Aerospace, Commercial, and Harsh Environments V, 920202 (5 September 2014); doi: 10.1117/12.2060300
Published in SPIE Proceedings Vol. 9202:
Photonics Applications for Aviation, Aerospace, Commercial, and Harsh Environments V
Alex A. Kazemi; Bernard C. Kress; Edgar A. Mendoza, Editor(s)
PDF: 15 pages
Proc. SPIE 9202, Photonics Applications for Aviation, Aerospace, Commercial, and Harsh Environments V, 920202 (5 September 2014); doi: 10.1117/12.2060300
Show Author Affiliations
Shiping Chen, The Boeing Co. (United States)
Published in SPIE Proceedings Vol. 9202:
Photonics Applications for Aviation, Aerospace, Commercial, and Harsh Environments V
Alex A. Kazemi; Bernard C. Kress; Edgar A. Mendoza, Editor(s)
© SPIE. Terms of Use
