Cited 0 time in webofscience Cited 0 time in scopus

Optical liquid-level sensor using a collimator in a pipe with small holes

Title
Optical liquid-level sensor using a collimator in a pipe with small holes
Authors
Lee, Cherl-HeeLee, JonghunMoon, Jeon-IlKim, Kwang Taek
DGIST Authors
Lee, Cherl-Hee; Lee, JonghunMoon, Jeon-Il
Issue Date
2011
Citation
Electro-Optical and Infrared Systems: Technology and Applications VIII, 8185
Type
Conference
Article Type
Conference Paper
ISBN
9780000000000
ISSN
0277-786X
Abstract
To measure a level of a flammable liquid, optical sensing methods have been reported more effective than other methods based on mechanical and electrical methods. This paper reports a new method that uses a collimator and a pipe to measure the liquid level. The presented liquid-level sensor consists of a gradient-index lens (GRIN lens), a metal pipe with small holes, and a floating buoy as a mirror. The liquid in the tank flows into the pipe through small holes and the floating buoy coated with aluminum will float over the liquid. The light collimated by a GRIN lens will be reflected at the floating buoy, which operates like mirror. The light reflected from the mirror is refocused through the GRIN lens and is varied as a function of the liquid distance. It is a simple design using a pipe to collect easily the. The experimental result was obtained using a pipe with the height of 2 m and width of 10 mm. The power loss was decreased with the ratio of 30 dB/m. This low-cost configuration easily collects the reflected light from the liquid surface without complicated aligning. © 2011 SPIE.
URI
http://hdl.handle.net/20.500.11750/3912
DOI
10.1117/12.897974
Publisher
SPIE
Related Researcher
Files:
There are no files associated with this item.
Collection:
Division of IoT∙Robotics Convergence Research2. Conference Papers
Convergence Research Center for Future Automotive Technology2. Conference Papers


qrcode mendeley

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE