Design and Analysis of an Active Reflection Controller That Can Reduce Acoustic Signal Refer to the Angle of Incidence
Techniques for reducing the reflection of acoustic signals have recently been actively studied. Most methods for reducing acoustic signals were studied using the normal-incidence wave reduction technique. Although the technique of canceling an object from the normal incidence wave is essential, rese...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-08-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/21/17/5793 |
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| author | Joo Young Pyun Beom Hoon Park Young Hun Kim Yeong Bae Won Hak Yi Jeong-Min Lee Hee-Seon Seo Kwan Kyu Park |
| author_facet | Joo Young Pyun Beom Hoon Park Young Hun Kim Yeong Bae Won Hak Yi Jeong-Min Lee Hee-Seon Seo Kwan Kyu Park |
| author_sort | Joo Young Pyun |
| collection | DOAJ |
| description | Techniques for reducing the reflection of acoustic signals have recently been actively studied. Most methods for reducing acoustic signals were studied using the normal-incidence wave reduction technique. Although the technique of canceling an object from the normal incidence wave is essential, research on reducing acoustic signals according to the angle of incidence is required for practical applications. In this study, we designed, fabricated, and experimented with an active reflection controller that can reduce acoustic signals according to the angle of incidence. The controller consists of a transmitter on one layer, a receiver sensor on two layers, and an acoustic window on three layers. To reduce the reflected signal, a combination of the time delay and phase was applied to the controller to minimize the acoustic signal by up to −23 dB at an angle of 10°. A controller array simulation was performed based on the results of a controlled experiment. In conclusion, our proposed controller can reduce acoustic signals according to the angle of incidence, which makes it suitable for many applications. |
| first_indexed | 2024-03-10T08:03:50Z |
| format | Article |
| id | doaj.art-543924ca6f2845b58193e459a1df7b3c |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-10T08:03:50Z |
| publishDate | 2021-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-543924ca6f2845b58193e459a1df7b3c2023-11-22T11:12:30ZengMDPI AGSensors1424-82202021-08-012117579310.3390/s21175793Design and Analysis of an Active Reflection Controller That Can Reduce Acoustic Signal Refer to the Angle of IncidenceJoo Young Pyun0Beom Hoon Park1Young Hun Kim2Yeong Bae Won3Hak Yi4Jeong-Min Lee5Hee-Seon Seo6Kwan Kyu Park7Department of Convergence Mechanical Engineering, Hanyang University, Seoul 04763, KoreaDepartment of Convergence Mechanical Engineering, Hanyang University, Seoul 04763, KoreaDepartment of Convergence Mechanical Engineering, Hanyang University, Seoul 04763, KoreaDepartment of Mechanical Engineering, Kyungpook National University, Daegu 41566, KoreaDepartment of Mechanical Engineering, Kyungpook National University, Daegu 41566, KoreaMaritime Technology Research Institute, Agency for Defense Development, Changwon 51682, KoreaMaritime Technology Research Institute, Agency for Defense Development, Changwon 51682, KoreaDepartment of Convergence Mechanical Engineering, Hanyang University, Seoul 04763, KoreaTechniques for reducing the reflection of acoustic signals have recently been actively studied. Most methods for reducing acoustic signals were studied using the normal-incidence wave reduction technique. Although the technique of canceling an object from the normal incidence wave is essential, research on reducing acoustic signals according to the angle of incidence is required for practical applications. In this study, we designed, fabricated, and experimented with an active reflection controller that can reduce acoustic signals according to the angle of incidence. The controller consists of a transmitter on one layer, a receiver sensor on two layers, and an acoustic window on three layers. To reduce the reflected signal, a combination of the time delay and phase was applied to the controller to minimize the acoustic signal by up to −23 dB at an angle of 10°. A controller array simulation was performed based on the results of a controlled experiment. In conclusion, our proposed controller can reduce acoustic signals according to the angle of incidence, which makes it suitable for many applications.https://www.mdpi.com/1424-8220/21/17/5793low-frequency transducerpiezoelectric materialangle of incidence |
| spellingShingle | Joo Young Pyun Beom Hoon Park Young Hun Kim Yeong Bae Won Hak Yi Jeong-Min Lee Hee-Seon Seo Kwan Kyu Park Design and Analysis of an Active Reflection Controller That Can Reduce Acoustic Signal Refer to the Angle of Incidence Sensors low-frequency transducer piezoelectric material angle of incidence |
| title | Design and Analysis of an Active Reflection Controller That Can Reduce Acoustic Signal Refer to the Angle of Incidence |
| title_full | Design and Analysis of an Active Reflection Controller That Can Reduce Acoustic Signal Refer to the Angle of Incidence |
| title_fullStr | Design and Analysis of an Active Reflection Controller That Can Reduce Acoustic Signal Refer to the Angle of Incidence |
| title_full_unstemmed | Design and Analysis of an Active Reflection Controller That Can Reduce Acoustic Signal Refer to the Angle of Incidence |
| title_short | Design and Analysis of an Active Reflection Controller That Can Reduce Acoustic Signal Refer to the Angle of Incidence |
| title_sort | design and analysis of an active reflection controller that can reduce acoustic signal refer to the angle of incidence |
| topic | low-frequency transducer piezoelectric material angle of incidence |
| url | https://www.mdpi.com/1424-8220/21/17/5793 |
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