Liquid level sensing by use of digital formatted optical spectrum spreading technique

W. Zhang; K. Sugden; S. Grice; I. Bennion

doi:10.2971/jeos.2009.09022

Journal of the European Optical Society - Rapid publications, Vol 4 (2009)

Liquid level sensing by use of digital formatted optical spectrum spreading technique

W. Zhang, K. Sugden, S. Grice, I. Bennion

Abstract

We propose a novel technique for optical liquid level sensing. The technique takes advantage of an optical spectrum spreading technique and directly measures liquid level with a digital format. The performance of the sensor does not suffer from changes of environmental variables and system variables. Due to its distinct measurement principle both high resolution and a large measurement range can be achieved simultaneously.

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References

S. F. Knowles, B. E. Jones, S. Purdy, and C. M. France, "Multiple microbending optical-fiber sensors for measurement of fuel quantity in aircraft fuel tanks" Sensor Actuat. A-Phys. 68, 330-323 (1998).

S. Khaliq, S. W. James, and R. P. Tatam, "Fiber-optic liquid-level sensor using a long-period grating" Opt. Lett. 26, 1224-1226 (2001).

I. P. Dakin and M. G. Holliday, A liquid level sensor based on O-H or C-H absorption monitoring, 91-95 (Proc. First Int. IEE Con. Optical Fiber Sensors 221, London, England, 1983).

K. E. Romo-Medrano and S. N. Khotiaintsev, "An optical-fiber refractometric liquid-level sensor for liquid nitrogen" Meas. Sci. Technol. 17, 998-1004 (2006).

D. A. Jackson, High precision remote liquid level measurement using a combination of optical radar and optical fibers, 100-103 (Proc. First Int. IEE Con. Optical Fiber Sensors 221, London, England, 1983).