CN2594809Y - Optical fibre acceleration seismic detector - Google Patents
Optical fibre acceleration seismic detector Download PDFInfo
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- CN2594809Y CN2594809Y CN 03200396 CN03200396U CN2594809Y CN 2594809 Y CN2594809 Y CN 2594809Y CN 03200396 CN03200396 CN 03200396 CN 03200396 U CN03200396 U CN 03200396U CN 2594809 Y CN2594809 Y CN 2594809Y
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 18
- 230000001133 acceleration Effects 0.000 title claims abstract description 7
- 239000000835 fiber Substances 0.000 claims abstract description 17
- 230000003287 optical effect Effects 0.000 claims abstract description 4
- 239000000919 ceramic Substances 0.000 claims abstract description 3
- 239000002184 metal Substances 0.000 claims abstract description 3
- 238000001514 detection method Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
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Abstract
本实用新型公开了一种全光纤加速度地震检波器，属于加速度及地震波检测装置。该检波器在金属外壳内，密封有全光纤迈克尔逊干涉仪及包括有放大器，振荡器，乘法器，滤波器构成的信号处理电路。所述的全光纤迈克尔逊干涉仪由光纤参考臂，光纤信号臂，单模光纤反射镜，光纤耦合器和激光器，其特征在于光纤耦合器的输入端与激光器相连，输出端与光电转换器相连，光纤参考臂部分光纤缠绕在压电陶瓷上，光纤信号臂带有光纤－质量块简谐振子。本实用新型的有益效果是，检测频带宽，适合在强电磁干扰下高精度而稳定的下工作。
The utility model discloses an all-fiber acceleration seismic detector, which belongs to acceleration and seismic wave detection devices. The detector is sealed with an all-fiber Michelson interferometer and a signal processing circuit including an amplifier, an oscillator, a multiplier and a filter in a metal casing. The all-fiber Michelson interferometer is composed of an optical fiber reference arm, an optical fiber signal arm, a single-mode optical fiber reflector, an optical fiber coupler and a laser, and is characterized in that the input end of the optical fiber coupler is connected with the laser, and the output end is connected with the photoelectric converter , part of the optical fiber reference arm is wound on piezoelectric ceramics, and the optical fiber signal arm is provided with an optical fiber-mass block simple harmonic oscillator. The beneficial effect of the utility model is that the detection frequency band is wide, and it is suitable for high-precision and stable work under strong electromagnetic interference.
Description
技术领域technical field
本实用新型涉及一种全光纤加速度地震检波器，属于地震波检测装置。The utility model relates to an all-fiber acceleration seismic detector, which belongs to seismic wave detection devices.
背景技术Background technique
目前在测量地震波的领域大都采用传统的电磁式检波器，此类检波器灵敏度不高，频带窄，而且易受电磁干扰。At present, most of the traditional electromagnetic geophones are used in the field of seismic wave measurement. This type of geophone has low sensitivity, narrow frequency band, and is susceptible to electromagnetic interference.
发明内容Contents of the invention
本实用新型的目的在于提供一种全光纤加速度地震检波器，该地震检波器不仅能抗电磁干扰，而且能检测低频范围的地震波。The purpose of the utility model is to provide an all-fiber acceleration geophone, which can not only resist electromagnetic interference, but also detect seismic waves in the low frequency range.
本实用新型解决其技术问题所采用的技术方案是：在金属外壳内，密封有全光纤迈克尔逊干涉仪及包括有放大器，振荡器，乘法器，滤波器构成的信号处理电路。所述的全光纤迈克尔逊干涉仪由光纤参考臂，光纤信号臂，单模光纤反射镜，光纤耦合器和激光器，其特征在于光纤耦合器的输入端与激光器相连，输出端与光电转换器相连，光纤参考臂部分光纤缠绕在压电陶瓷上，光纤信号臂带有光纤-质量块简谐振子。The technical scheme adopted by the utility model to solve the technical problem is: in the metal casing, an all-fiber Michelson interferometer and a signal processing circuit comprising an amplifier, an oscillator, a multiplier and a filter are sealed. The all-fiber Michelson interferometer is composed of an optical fiber reference arm, an optical fiber signal arm, a single-mode optical fiber reflector, an optical fiber coupler and a laser, and is characterized in that the input end of the optical fiber coupler is connected with the laser, and the output end is connected with the photoelectric converter , the optical fiber reference arm part of the optical fiber is wound on the piezoelectric ceramics, and the optical fiber signal arm is equipped with an optical fiber-mass block simple harmonic oscillator.
本实用新型的有益效果是，检测频带展宽，适合在强电磁干扰下高精度而稳定的下工作。The beneficial effect of the utility model is that the detection frequency band is widened, and it is suitable for high-precision and stable work under strong electromagnetic interference.
附图说明Description of drawings
图1是本实用新型的结构框图。Fig. 1 is a structural block diagram of the utility model.
图中1.激光器，2.光纤耦合器，3.参考臂，4.信号臂，5.光纤-质量块简谐振子，6.处理电路.7.光电探测器。In the figure, 1. laser, 2. fiber coupler, 3. reference arm, 4. signal arm, 5. fiber-mass simple harmonic oscillator, 6. processing circuit, 7. photodetector.
具体实施方式Detailed ways
在图1中，激光器1、光电探测器7、参考臂3、信号臂4与光纤耦合器2相连，由处理电路6输出。In FIG. 1 , a
在本图所示的实施例中，激光器1发出测量光，光纤-质量块简谐振子5将振动信号加到迈克尔逊干涉仪的信号臂4上，干涉仪信号臂中传播的光波的相位受到调制，调制后的光波与参考臂中返回的光波在耦合器的耦合区产生干涉，从而将光波的相位变化转化为光波的强度变化，再由光电探测器PIN接收，将光信号转换为电信号，利用处理电路6，经解调后检测出待测加速度信号。In the embodiment shown in this figure, the
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03200396 CN2594809Y (en) | 2003-01-14 | 2003-01-14 | Optical fibre acceleration seismic detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03200396 CN2594809Y (en) | 2003-01-14 | 2003-01-14 | Optical fibre acceleration seismic detector |
Publications (1)
| Publication Number | Publication Date |
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| CN2594809Y true CN2594809Y (en) | 2003-12-24 |
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| CN 03200396 Expired - Fee Related CN2594809Y (en) | 2003-01-14 | 2003-01-14 | Optical fibre acceleration seismic detector |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100406896C (en) * | 2006-06-29 | 2008-07-30 | 浙江大学 | High resolution micro-nano optical accelerometer |
| WO2018199786A1 (en) * | 2017-04-28 | 2018-11-01 | Inphotech Sp. Z O. O. | Measurement method of vibrations, especially of seismic type, and a device for the measurement of vibrations, especially of seismic type |
-
2003
- 2003-01-14 CN CN 03200396 patent/CN2594809Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100406896C (en) * | 2006-06-29 | 2008-07-30 | 浙江大学 | High resolution micro-nano optical accelerometer |
| WO2018199786A1 (en) * | 2017-04-28 | 2018-11-01 | Inphotech Sp. Z O. O. | Measurement method of vibrations, especially of seismic type, and a device for the measurement of vibrations, especially of seismic type |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |