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Vol. 14-1, Special Issue, March 2012, pp.65-82




A Novel Liquid Level Sensor Design Using Laser Optics Technology


1 Mehmet Emre ERDEM and 2Doğan GÜNEŞ

1 Institute of Science and Technology, Istanbul Technical University

2 Energy Systems Engineering Department, Istanbul Bilgi University

Istanbul, Turkey

E-mail: dogan.gunes@bilgi.edu.tr



Received: 13 October 2011   /Accepted: 20 December 2011   /Published: 12 March 2012

Digital Sensors and Sensor Sysstems


Abstract: New materials and technological developments in electronics and computers have changed all of the industries, as well as the world itself. These technological advancements have evolved automotive industry by redefining the concepts like: performance, efficiency, fuel consumption, driving dynamics, ergonomics etc. to a level far beyond expected. Oil level in an internal combustion engine today is estimated by use of ultrasonic sensor devices. In this paper, the development stages of a novel liquid level sensing device and the development strategy is presented in detail. Several prototypes of the proposed new sensor are developed and tested. Experimental results indicate that by using the laser optics technology, sensitivity ranges of 0.0266 Pa in air pressure and 0.0064 mm water height measurements may be achieved.


Keywords: Sensor(s), Laser optics, Liquid level sensor, Engine oil, Whispering Gallery Mode (WGM)


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