Directional Resonant MEMS Acoustic Sensor and Associated Acoustic Vector Sensor
This paper reports on the design, modeling, analysis, and evaluation of a micro-electromechanical systems acoustic sensor and the novel design of an acoustic vector sensor array (AVS) which utilized this acoustic sensor. This research builds upon previous work conducted to develop a small, lightweig...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-10-01
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| Series: | Sensors |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1424-8220/23/19/8217 |
| _version_ | 1797575178688921600 |
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| author | Justin Ivancic Gamani Karunasiri Fabio Alves |
| author_facet | Justin Ivancic Gamani Karunasiri Fabio Alves |
| author_sort | Justin Ivancic |
| collection | DOAJ |
| description | This paper reports on the design, modeling, analysis, and evaluation of a micro-electromechanical systems acoustic sensor and the novel design of an acoustic vector sensor array (AVS) which utilized this acoustic sensor. This research builds upon previous work conducted to develop a small, lightweight, portable system for the detection and location of quiet or distant acoustic sources of interest. This study also reports on the underwater operation of this sensor and AVS. Studies were conducted in the lab and in the field utilizing multiple acoustic sources (e.g., generated tones, gun shots, drones). The sensor operates at resonance, providing for high acoustic sensitivity and a high signal-to-noise ratio (SNR). The sensor demonstrated a maximum SNR of 88 dB with an associated sensitivity of −84.6 dB re 1 V/μPa (59 V/Pa). The sensor design can be adjusted to set a specified resonant frequency to align with a known acoustic signature of interest. The AVS demonstrated an unambiguous, 360-degree, in-plane, azimuthal coverage and was able to provide an acoustic direction of arrival to an average error of within 3.5° during field experiments. The results of this research demonstrate the potential usefulness of this sensor and AVS design for specific applications. |
| first_indexed | 2024-03-10T21:34:58Z |
| format | Article |
| id | doaj.art-c09027b53d6e4942afae268e90334e4b |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-10T21:34:58Z |
| publishDate | 2023-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-c09027b53d6e4942afae268e90334e4b2023-11-19T15:04:24ZengMDPI AGSensors1424-82202023-10-012319821710.3390/s23198217Directional Resonant MEMS Acoustic Sensor and Associated Acoustic Vector SensorJustin Ivancic0Gamani Karunasiri1Fabio Alves2Department of Physics, Naval Postgraduate School, Monterey, CA 93943, USADepartment of Physics, Naval Postgraduate School, Monterey, CA 93943, USADepartment of Physics, Naval Postgraduate School, Monterey, CA 93943, USAThis paper reports on the design, modeling, analysis, and evaluation of a micro-electromechanical systems acoustic sensor and the novel design of an acoustic vector sensor array (AVS) which utilized this acoustic sensor. This research builds upon previous work conducted to develop a small, lightweight, portable system for the detection and location of quiet or distant acoustic sources of interest. This study also reports on the underwater operation of this sensor and AVS. Studies were conducted in the lab and in the field utilizing multiple acoustic sources (e.g., generated tones, gun shots, drones). The sensor operates at resonance, providing for high acoustic sensitivity and a high signal-to-noise ratio (SNR). The sensor demonstrated a maximum SNR of 88 dB with an associated sensitivity of −84.6 dB re 1 V/μPa (59 V/Pa). The sensor design can be adjusted to set a specified resonant frequency to align with a known acoustic signature of interest. The AVS demonstrated an unambiguous, 360-degree, in-plane, azimuthal coverage and was able to provide an acoustic direction of arrival to an average error of within 3.5° during field experiments. The results of this research demonstrate the potential usefulness of this sensor and AVS design for specific applications.https://www.mdpi.com/1424-8220/23/19/8217MEMS acoustic sensorMEMS acoustic vector sensorresonant sensor |
| spellingShingle | Justin Ivancic Gamani Karunasiri Fabio Alves Directional Resonant MEMS Acoustic Sensor and Associated Acoustic Vector Sensor Sensors MEMS acoustic sensor MEMS acoustic vector sensor resonant sensor |
| title | Directional Resonant MEMS Acoustic Sensor and Associated Acoustic Vector Sensor |
| title_full | Directional Resonant MEMS Acoustic Sensor and Associated Acoustic Vector Sensor |
| title_fullStr | Directional Resonant MEMS Acoustic Sensor and Associated Acoustic Vector Sensor |
| title_full_unstemmed | Directional Resonant MEMS Acoustic Sensor and Associated Acoustic Vector Sensor |
| title_short | Directional Resonant MEMS Acoustic Sensor and Associated Acoustic Vector Sensor |
| title_sort | directional resonant mems acoustic sensor and associated acoustic vector sensor |
| topic | MEMS acoustic sensor MEMS acoustic vector sensor resonant sensor |
| url | https://www.mdpi.com/1424-8220/23/19/8217 |
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