CN102042891A - Bent optical fiber sensing device - Google Patents
Bent optical fiber sensing device Download PDFInfo
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- CN102042891A CN102042891A CN2009100242565A CN200910024256A CN102042891A CN 102042891 A CN102042891 A CN 102042891A CN 2009100242565 A CN2009100242565 A CN 2009100242565A CN 200910024256 A CN200910024256 A CN 200910024256A CN 102042891 A CN102042891 A CN 102042891A
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- optical fiber
- sensing device
- bent
- fiber sensing
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Abstract
The invention discloses a bent optical fiber sensing device which comprises a light source, optical dividers, bent optical fiber sensors and an optical power meter. The bent optical fiber sensing device is characterized in that the light source is connected with the front optical divider, the front optical divider is connected with at least two optical fibers, at least one bent optical fiber sensor is arranged on each optical fiber, the other ends of the optical fibers are then connected to the rear optical divider, and the rear optical divider is connected to the optical power meter to form one bent optical fiber sensing device. When any bent optical fiber sensor on the bent optical fiber sensing device responds, the power loss of the optical signals transmitted in the optical fiber is caused, and the optical power meter responds, so that the bent optical fiber sensing device can monitor the force value in a larger range. The invention has the advantages of simple and practical structure, strong capability of resisting ambient interference and low running and use cost, and is suitable for popularization and use.
Description
Technical field
The present invention relates to a kind of curved fiber sensing device, the sensor of stressing conditions is in a big way monitored in a kind of loss that utilizes multifiber of saying so more specifically.
Background technology
It is enough for existing Fibre Optical Sensor kind, comprise fiber-optic grating sensor, optical fibre interferometric sensor, polytypes such as optical fiber micro-bending sensor, be characterized in the sensing sensitivity height, the equipment complexity, use, the operating cost height, make its application be subjected to very big restriction, particularly its higher sensitivity can respond the change of various environmental baselines in the use, as optical fibre interferometric sensor, its sensitivity is very high, but after being applied under the physical condition, find temperature, air pressure, environmental factors such as vibration are all influential to it, have to take multiple measure to prevent and reject the influence of these factors, make instrument and equipment be tending towards complicated, the operation use cost improves; On the other hand, some places do not need especially accurate equipment in the actual life, need understand under the situations such as power value whether stress reach setting as us, and the said equipment just seems and wasted one's talent on a petty job.In addition, if the said equipment is when wanting to monitor in a big way stressing conditions, and the complexity of system significantly improves, and practical application is very difficult.
Summary of the invention
The object of the present invention is to provide a kind of curved fiber sensing device, this kind Fibre Optical Sensor had both had lower foundation and operating cost, can reduce Effect of Environmental again.
For realizing purpose of the present invention, a kind of curved fiber sensing device that the present invention discloses, light source, optical branching device, curved fiber sensor, light power meter, it is characterized in that light source connects preceding optical branching device, preceding shunt is connected to few optical fiber more than two and two, has a curved fiber sensor on the every optical fiber at least, the other end of optical fiber all is connected on the optical branching device of back then, and back optical branching device is connected on the light power meter, forms a fibre-optical sensing device.When any the curved fiber sensor on this fibre-optical sensing device had response, all the power to the light signal that transmits in the optical fiber caused loss, all responded on light power meter, and power is worth monitoring thereby finish in a big way.
Should be appreciated that the general introduction of front and following detailed description all are exemplary, rather than limitation of the present invention.
Description of drawings:
Fig. 1 is a synoptic diagram according to an embodiment of the invention.
Among the figure:
The 1-light source, the 2-optical branching device, 3-optical fiber, 4-curved fiber sensor,
The 8-light power meter.
Embodiment
Fig. 1 is a synoptic diagram according to an embodiment of the invention.The light signal that light source 1 sends, enter into optical fiber 3 and optical sensor spare 4 by preceding optical branching device 2, and then by optical fiber and the back optical branching device 2 enter into light power meter 8, when any one curved fiber sensor 4 is subjected to force-responsive to external world, the power of the light signal by this curved fiber sensor 4 has decay, detect the variation of light signal at light power meter 8, thereby reach the purpose of monitoring.
Can find out that from above-mentioned introduction the present invention is a kind of system of stressing conditions on a large scale that monitors, it is simple and practical, the temperature of surrounding environment, air pressure, vibration etc. do not have influence substantially to it, anti-environmental interference ability is strong, and operation and use cost are low, is suitable for promoting and using.
Certainly, the present invention is not limited to the embodiment that the front is introduced, and we can replace whole device with another kind of equivalent arrangements, and do not exceed scope of the present invention.
Claims (3)
1. curved fiber sensing device, comprise light source, optical branching device, curved fiber sensor and light power meter, it is characterized in that, light source connects preceding optical branching device, preceding shunt is connected to few optical fiber more than two and two, have a curved fiber sensor on the every optical fiber at least, the other end of optical fiber all is connected on the optical branching device of back then, and back optical branching device is connected on the light power meter.
2. according to right 1 described a kind of curved fiber sensing device, it is characterized in that described curved fiber sensor is an optical fiber macrobending loss sensor.
3. according to right 1 described a kind of curved fiber sensing device, it is characterized in that described curved fiber sensor is essentially identical curved fiber sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100242565A CN102042891A (en) | 2009-10-12 | 2009-10-12 | Bent optical fiber sensing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100242565A CN102042891A (en) | 2009-10-12 | 2009-10-12 | Bent optical fiber sensing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102042891A true CN102042891A (en) | 2011-05-04 |
Family
ID=43909239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100242565A Pending CN102042891A (en) | 2009-10-12 | 2009-10-12 | Bent optical fiber sensing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102042891A (en) |
-
2009
- 2009-10-12 CN CN2009100242565A patent/CN102042891A/en active Pending
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110504 |