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Experimental Investigation of Microcontroller-Based Acoustic Temperature Transducer Systems
Ayman Y Al-Rawashdeh1, Tariq M Younes2, Ali Dalabeeh1
1Department of Electrical Engineering, Faculty of Engineering Technology, Al Balqa Applied University, Al Salt 19117, Jordan.
Sensors (Basel, Switzerland)
|January 21, 2023
Summary
This study introduces a novel microcontroller-based acoustic temperature transducer. The device utilizes resonance in a tube to measure temperature with notable linearity and simplicity.
Area of Science:
- Physics
- Engineering
- Instrumentation
Background:
- Temperature transducers are crucial for industrial process monitoring.
- Existing transducers may have limitations in simplicity or linearity.
Purpose of the Study:
- To design and model a microcontroller-based acoustic temperature transducer.
- To explore the use of resonance phenomena in a cylindrical tube for temperature sensing.
Main Methods:
- An acoustic standing wave is generated in a resonance tube.
- The wave's frequency is converted to pulses using a Schmitt trigger circuit.
- An Arduino Uno microcontroller measures the pulse frequency.
Main Results:
- Experimental validation was conducted using resonance tubes of varying diameters.
- The transducer demonstrated a maximum nonlinearity error of 2.3% (FSD).
- Relative error was assessed against experimental data and a regression model.
Conclusions:
- The designed acoustic temperature transducer offers a simple circuit and design.
- The device exhibits linear measurement characteristics.
- This approach presents a viable alternative for temperature monitoring applications.
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