A miniaturized acoustic vector sensor with PIN-PMN-PT single crystal cantilever beam accelerometers
Directional sound detection using vector sensors rather than large hydrophone arrays is highly advantageous for target detection in SONAR. However, developing highly sensitive and compact vector sensors for use in a system whose size is limited has been a challenging issue. In this paper, we describ...
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| Format: | Article |
| Language: | English |
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EDP Sciences
2020-01-01
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| Series: | Acta Acustica |
| Subjects: | |
| Online Access: | https://acta-acustica.edpsciences.org/articles/aacus/full_html/2020/05/aacus200021/aacus200021.html |
| _version_ | 1797717834620469248 |
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| author | Cho Yohan Je Yub Jeong Weui-Bong |
| author_facet | Cho Yohan Je Yub Jeong Weui-Bong |
| author_sort | Cho Yohan |
| collection | DOAJ |
| description | Directional sound detection using vector sensors rather than large hydrophone arrays is highly advantageous for target detection in SONAR. However, developing highly sensitive and compact vector sensors for use in a system whose size is limited has been a challenging issue. In this paper, we describe a miniaturized acoustic vector sensor with piezoelectric single crystal accelerometers for the application in towed line arrays. A mass-loaded cantilever beam accelerometer with a [011] poled PIN-PMN-PT single crystal shows a better signal-to-noise ratio compared to accelerometers with other piezoelectric materials because of its superior piezoelectric properties in the 32 direction. We suggested a sufficiently compact vector sensor by using a cylindrical hydrophone with 10 mm in diameter as a housing of the single crystal accelerometers. Two single crystal accelerometers were orthogonally mounted inside the cylindrical hydrophone to detect direction of sound in the transverse plane of the line array. The receiving voltage sensitivity of the accelerometers and hydrophone was −199 and −196 dB, respectively, at 3 kHz. The directional cardioid beams generated by summing the omnidirectional beam from the hydrophone and the dipole beam from the accelerometers were validated over the entire operating frequency. |
| first_indexed | 2024-03-12T08:43:11Z |
| format | Article |
| id | doaj.art-b1f5b15a2a894111b5991e79e6bb65b0 |
| institution | Directory Open Access Journal |
| issn | 2681-4617 |
| language | English |
| last_indexed | 2024-03-12T08:43:11Z |
| publishDate | 2020-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | Acta Acustica |
| spelling | doaj.art-b1f5b15a2a894111b5991e79e6bb65b02023-09-02T16:40:03ZengEDP SciencesActa Acustica2681-46172020-01-01451710.1051/aacus/2020017aacus200021A miniaturized acoustic vector sensor with PIN-PMN-PT single crystal cantilever beam accelerometersCho Yohan0Je Yub1Jeong Weui-Bong2Agency for Defense DevelopmentAgency for Defense DevelopmentSchool of Mechanical Engineering, Pusan National UniversityDirectional sound detection using vector sensors rather than large hydrophone arrays is highly advantageous for target detection in SONAR. However, developing highly sensitive and compact vector sensors for use in a system whose size is limited has been a challenging issue. In this paper, we describe a miniaturized acoustic vector sensor with piezoelectric single crystal accelerometers for the application in towed line arrays. A mass-loaded cantilever beam accelerometer with a [011] poled PIN-PMN-PT single crystal shows a better signal-to-noise ratio compared to accelerometers with other piezoelectric materials because of its superior piezoelectric properties in the 32 direction. We suggested a sufficiently compact vector sensor by using a cylindrical hydrophone with 10 mm in diameter as a housing of the single crystal accelerometers. Two single crystal accelerometers were orthogonally mounted inside the cylindrical hydrophone to detect direction of sound in the transverse plane of the line array. The receiving voltage sensitivity of the accelerometers and hydrophone was −199 and −196 dB, respectively, at 3 kHz. The directional cardioid beams generated by summing the omnidirectional beam from the hydrophone and the dipole beam from the accelerometers were validated over the entire operating frequency.https://acta-acustica.edpsciences.org/articles/aacus/full_html/2020/05/aacus200021/aacus200021.htmlinertial vector sensorscantilever beam accelerometers[011] poled pin-pmn-ptdirectional hydrophonestowed line arrays |
| spellingShingle | Cho Yohan Je Yub Jeong Weui-Bong A miniaturized acoustic vector sensor with PIN-PMN-PT single crystal cantilever beam accelerometers Acta Acustica inertial vector sensors cantilever beam accelerometers [011] poled pin-pmn-pt directional hydrophones towed line arrays |
| title | A miniaturized acoustic vector sensor with PIN-PMN-PT single crystal cantilever beam accelerometers |
| title_full | A miniaturized acoustic vector sensor with PIN-PMN-PT single crystal cantilever beam accelerometers |
| title_fullStr | A miniaturized acoustic vector sensor with PIN-PMN-PT single crystal cantilever beam accelerometers |
| title_full_unstemmed | A miniaturized acoustic vector sensor with PIN-PMN-PT single crystal cantilever beam accelerometers |
| title_short | A miniaturized acoustic vector sensor with PIN-PMN-PT single crystal cantilever beam accelerometers |
| title_sort | miniaturized acoustic vector sensor with pin pmn pt single crystal cantilever beam accelerometers |
| topic | inertial vector sensors cantilever beam accelerometers [011] poled pin-pmn-pt directional hydrophones towed line arrays |
| url | https://acta-acustica.edpsciences.org/articles/aacus/full_html/2020/05/aacus200021/aacus200021.html |
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