Automatic liquid level indication and control using passive UHF RFID tags

Author

Atojoko, A. ; Abd-Alhameed, R.A. ; Tu, Y. ; Elmegri, F. ; See, C.H. ; Child, M.B.

Author_Institution

Radio Freq. & Antenna Design Group, Univ. of Bradford, Bradford, UK

fYear

2014

fDate

10-11 Nov. 2014

Firstpage

136

Lastpage

140

Abstract

This paper proposes a new perspective to the liquid level monitoring and control technique by deploying energy efficient passive UHF RFID tags as liquid level sensors. The system consists of the pump, storage tank, level sensors (passive tags), RFID tag reader, pump control circuit, alarm circuit, and an indicator circuit. The tags are sealed (air and water tight), programmed with unique level labels using the Alien Reader software(860-868MHZ) and deployed to various levels of a storage tank for level monitoring and control. The mirrored P-shaped tag is designed modelled and deployed for use as the liquid level sensors. The RFID reader is disguised to form a part of the tank cover literarily few inches away from the tags. A variation of the tag readings received is used to infer level information which is communicated via the reader middleware to a computer database for monitoring.

Keywords

UHF detectors; level control; level measurement; radiofrequency identification; Alien Reader software; automatic liquid level control technique; automatic liquid level indication; computer database; energy efficient passive UHF RFID tags; frequency 860 MHz to 868 MHz; liquid level monitoring; liquid level sensors; mirrored P-shaped tag; reader middleware; tank cover; Computers; Level measurement; Liquids; Monitoring; Radiofrequency identification; Sensor phenomena and characterization; Passive UHF RFID tag; Power efficient; RFID Reader; liquid level indication and control;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Conference (LAPC), 2014 Loughborough

Conference_Location

Loughborough

Type

conf

DOI

10.1109/LAPC.2014.6996339

Filename

6996339