Improving Water Pressure Measurement Using Temperature-Compensated Wireless Passive SAW Bidirectional RDL Pressure Sensor

Tang, Zhaozhao and Wu, Wenyan and Gao, Jinliang and Yang, Po and Hussian, Ambreen and Jingting, Luo and Rao, Tao and Chen, Fu and Tianli, Li (2021) Improving Water Pressure Measurement Using Temperature-Compensated Wireless Passive SAW Bidirectional RDL Pressure Sensor. IEEE Transactions on Instrumentation and Measurement. ISSN 1557-9662

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Abstract

Currently, pressure sensors utilized for water pressure measurement need batteries for direct power supply. However, batteries are lifespan-limited and not so reliable in the buried water pipe environment. The maintenance work due to battery failures leads to high cost to utility owners. Wireless passive surface acoustic wave (WP-SAW) sensors do not need direct power supply from batteries and can work in harsh environments. They are low-cost and compatible with micro-electromechanical systems (MEMS) technologies. This study investigates a temperature-compensated WP-SAW bidirectional reflective delay line (RDL) pressure sensor and its feasibility in improving water pressure measurement. The linear temperature-compensated pressure sensing functional model between the output phase shifts and the pressure change is established theoretically and verified by experiments. An experimental framework for testing the sensor node is built. The water pressure sensing adaptor is proposed. Experimental results: the experimental data show good linearities, which fits the established functional relationship; the numerical-functional relationship has been derived and expressed; the sensor node has a good performance in the range of pressure difference from 0 to 0.5 MPa, which meets the normal 28-meter water pressure sensing requirements; the accuracy of this sensor is 7.22 kPa, which can be utilized for the water pressure sensing tasks in water distribution systems.

Item Type: Article
Identification Number: https://doi.org/10.1109/TIM.2021.3120146
Dates:
DateEvent
24 September 2021Accepted
14 October 2021Published Online
Uncontrolled Keywords: Sensors, Surface acoustic waves, Temperature sensors, Pressure measurement, Temperature measurement,Pressure sensors, RF signals
Subjects: CAH10 - engineering and technology > CAH10-01 - engineering > CAH10-01-01 - engineering (non-specific)
CAH10 - engineering and technology > CAH10-01 - engineering > CAH10-01-08 - electrical and electronic engineering
CAH11 - computing > CAH11-01 - computing > CAH11-01-03 - information systems
Divisions: Faculty of Computing, Engineering and the Built Environment > School of Engineering and the Built Environment > Advanced Design Engineering
Depositing User: Wenyan Wu
Date Deposited: 19 Oct 2021 09:59
Last Modified: 19 Oct 2021 09:59
URI: http://www.open-access.bcu.ac.uk/id/eprint/12207

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