Publication Date
2015
Document Type
Dissertation/Thesis
First Advisor
Tahernezhadi, Mansour
Degree Name
M.S. (Master of Science)
Legacy Department
Department of Electrical Engineering
LCSH
Engineering; Electrical engineering; Liquid level indicators; Water levels--Measurement; Water towers; Tanks; Radar receiving apparatus
Abstract
The present research is related to liquid level measurement using a non-contact radar. For this purpose we employ a Mono-Doppler transceiver whose function is to transmit and receive electromagnetic waves. The primary objective of the research is to estimate the height of water level in a tank and to build an efficient measuring device.;"Mono-Doppler transceiver operates as a pulse radar device. It emits pulses of microwaves in a duration of nanoseconds. For this reason the transceiver has high repetition rate. Within very short duration, a received signal is observed, the time delay of the received signal is used to evaluate to the height of water level. An antenna is attached to the transceiver to increase the directivity and percentage reflected power. To increase the signal strength an amplifier is introduced and it is constructed using LM 741. Further to notify us when the tank has reached its capacity, a comparator circuit is constructed. All the constructed amplifier and comparator circuits are evaluated in B2 Spice. Depending on the amplitude of the signal received when the tank has reached its capacity, a reference voltage is fed to comparator circuit. The output of comparator circuit is fed to LED. Thus when the LED is lit up, it is observed that the tank has reached its capacity.
Recommended Citation
Bukka, Kaushik, "Liquid level measurement using non-contact radar" (2015). Graduate Research Theses & Dissertations. 3809.
https://huskiecommons.lib.niu.edu/allgraduate-thesesdissertations/3809
Extent
50 pages
Language
eng
Publisher
Northern Illinois University
Rights Statement
In Copyright
Rights Statement 2
NIU theses are protected by copyright. They may be viewed from Huskie Commons for any purpose, but reproduction or distribution in any format is prohibited without the written permission of the authors.
Media Type
Text
Comments
Advisors: Mansour Tahernezhadi.||Committee members: Michael J. Haji-Sheikh; Martin Kocanda.