SU1686321A1 - Device for measuring sound pressure - Google Patents
Device for measuring sound pressure Download PDFInfo
- Publication number
- SU1686321A1 SU1686321A1 SU894706732A SU4706732A SU1686321A1 SU 1686321 A1 SU1686321 A1 SU 1686321A1 SU 894706732 A SU894706732 A SU 894706732A SU 4706732 A SU4706732 A SU 4706732A SU 1686321 A1 SU1686321 A1 SU 1686321A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- radiation
- sound pressure
- fiber optic
- mirror
- fiber
- Prior art date
Links
Abstract
Изобретение относитс к измерительной технике и может быть использовано дл измерени давлени . Цель изобретени повышение чувствительности. Это достигаетс тем, что чувствительный элемент волоконно-оптического датчика звукового давлени выполнен в виде интерферометра Фабри-Перро, в котором глухое зеркало 10 нанесено на мембрану 8, а полупрозрачное зеркало 11 - на торец световода, расположенного перпендикул рно плоскости мембраны. Коэффициент отражени полупрозрачного зеркала 11 выбран по условию о 1 /2(987 (J2 + 2) - (1 /2(987 д2 + 2)2- - 1) , где д ДА/А т ДЯ-ширина спектра излучени лазера; А-длина волны его излучени ; m - пор док интерференции. 2 ил.The invention relates to a measurement technique and can be used to measure pressure. The purpose of the invention is sensitivity enhancement. This is achieved by the fact that the sensitive element of a fiber-optic sound pressure sensor is made in the form of a Fabry-Perrot interferometer, in which a deaf mirror 10 is deposited on the membrane 8, and a translucent mirror 11 on the end of the fiber located perpendicular to the membrane plane. The reflection coefficient of the semitransparent mirror 11 is selected according to the condition about 1/2 (987 (J2 + 2) - (1/2 (987 d2 + 2) 2- 1), where d YES / A t DY is the width of the laser emission spectrum; A is the wavelength of its radiation; m is the order of interference 2 ill.
Description
Фиг 2Fig 2
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU894706732A SU1686321A1 (en) | 1989-04-13 | 1989-04-13 | Device for measuring sound pressure |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU894706732A SU1686321A1 (en) | 1989-04-13 | 1989-04-13 | Device for measuring sound pressure |
Publications (1)
Publication Number | Publication Date |
---|---|
SU1686321A1 true SU1686321A1 (en) | 1991-10-23 |
Family
ID=21454902
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU894706732A SU1686321A1 (en) | 1989-04-13 | 1989-04-13 | Device for measuring sound pressure |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU1686321A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999066299A1 (en) * | 1998-06-16 | 1999-12-23 | Nauchny Tsentr Volokonnoj Optiki Pri Institute Obschei Fiziki Rossiiskoi Akademii Nauk | Fiber-optic pressure sensor, variants and method for producing a resilient membrane |
CN105067102A (en) * | 2015-08-19 | 2015-11-18 | 哈尔滨工业大学 | Non-intrinsic type optical-fiber fabry-perot sound-pressure senor based on 45-degree optical fiber, and machining method |
-
1989
- 1989-04-13 SU SU894706732A patent/SU1686321A1/en active
Non-Patent Citations (1)
Title |
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Оба Р. Оё буцури. 1983. т. 52, Мг 5. с. 429-432. Перевод ВИНИТИ N И-19768. * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999066299A1 (en) * | 1998-06-16 | 1999-12-23 | Nauchny Tsentr Volokonnoj Optiki Pri Institute Obschei Fiziki Rossiiskoi Akademii Nauk | Fiber-optic pressure sensor, variants and method for producing a resilient membrane |
US6539136B1 (en) | 1998-06-16 | 2003-03-25 | Nauchny Tsentr Volokonnoi Optiki Pri Institute Obschei Fiziki Rossiiskoi Adademii Nauk | Fiber-optic pressure sensor, variants and method for producing a resilient membrane |
CN105067102A (en) * | 2015-08-19 | 2015-11-18 | 哈尔滨工业大学 | Non-intrinsic type optical-fiber fabry-perot sound-pressure senor based on 45-degree optical fiber, and machining method |
CN105067102B (en) * | 2015-08-19 | 2017-11-14 | 哈尔滨工业大学 | Extrinsic type optical fiber F-P sound pressure sensor and processing method based on 45 ° of optical fiber |
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