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Noise level analysis in buffer rod geometries for ultrasonic sensors
J Garcia-Alvarez1, Y Yañez, J L Prego
1Department of Electronic Engineering, Polytechnic University of Catalonia, Comte d'Urgell, 187, SC08, EUETIB, 08036 Barcelona, Spain. javier.garcia-alvarez@upc.edu <javier.garcia-alvarez@upc.edu>
Ultrasonics
|June 27, 2006
Summary
This study introduces a low-noise ultrasonic sensor for real-time batter monitoring, improving quality control. Optimized sensor design minimizes noise, enabling accurate measurements of batter density and compressibility.
Area of Science:
- Materials Science
- Acoustics
- Food Science
Background:
- Traditional batter density measurement is time-consuming.
- On-line monitoring offers improved product quality, efficiency, and reduced waste.
- Batter properties like density and compressibility are critical for final product quality.
Purpose of the Study:
- To develop an ultrasonic sensor for on-line batter monitoring.
- To address low-noise design considerations for enhanced accuracy.
- To investigate the relationship between sensor geometry and measurement noise.
Main Methods:
- Utilized an ultrasonic sensor with a piezoceramic disk and acrylic resin buffer rods.
- Measured acoustic impedance to infer batter density and compressibility.
- Employed simulations and experimental validation to study the influence of buffer rod geometry on noise.
- Analyzed the impact of buffer rod dimensions, piezoceramic disk frequency, and radius on noise levels.
Main Results:
- Identified spurious echoes as a primary source of noise affecting measurement accuracy.
- Demonstrated that buffer rod geometry significantly influences the noise level.
- Established correlations between sensor design parameters and noise reduction.
Conclusions:
- Optimized ultrasonic sensor geometry can minimize noise for reliable on-line batter monitoring.
- This technology enables precise control over batter properties, leading to better product consistency.
- The developed sensor offers a significant advancement over traditional, time-consuming measurement methods.
