CN205157077U - A optical fiber temperature sensor for ground meteorological observation - Google Patents
A optical fiber temperature sensor for ground meteorological observation Download PDFInfo
- Publication number
- CN205157077U CN205157077U CN201521000601.9U CN201521000601U CN205157077U CN 205157077 U CN205157077 U CN 205157077U CN 201521000601 U CN201521000601 U CN 201521000601U CN 205157077 U CN205157077 U CN 205157077U
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- temperature sensor
- fiber grating
- grating temperature
- optical fiber
- fibre optic
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Abstract
The utility model discloses an optical fiber temperature sensor for ground meteorological observation, including fiber grating temperature sensor probe, optical cable, fiber grating temperature sensor demodulation appearance, its characterized in that: the fiber grating temperature sensor probe links to each other with fiber grating temperature sensor demodulation appearance through the optical cable, still including the radiation protection cover that is used for reducing the sluggish error of solar radiation sum of errors lowering the temperature, the cover of protecting against radiation is fixed in the cover middle position of protecting against radiation including three metal sheet, an upper cover plate and a lower plate, fiber grating temperature sensor probe. The utility model discloses fiber grating temperature sensor can reduce the solar radiation error, and the sluggish error of lowering the temperature improves measurement accuracy.
Description
Technical field
The utility model relates to a kind of fibre optic temperature sensor for surface weather observation, belongs to fiber optic sensor technology field.
Background technology
Traditional surface weather station's temperature sensor, most use mercury sensor or platinum resistance temperature sensor, be generally placed in thermometer screen or radiation shield.Mercury sensor bulk is comparatively large, can not realize robotization, thus apply and reduce gradually, substantially replaced by platinum resistance temperature sensor, but platinum resistance probe directly can not contact with rainwater, otherwise easily causes short trouble.The platinum sensor putting into thermometer screen or radiation shield can effectively prevent contacting rain water from popping one's head in, but wooden thermometer screen and plastics radiation shield reflectivity low, leaf temperature easily raises, cause through air-flow heat up, then platinum resistance measures the air-flow after heating up, and can produce comparatively big error.In addition, in traditional thermometer screen, air-flow needs first through blade and after carrying out heat interchange with blade, then arrives sensor, therefore causes temperature hysteresis error.
Utility model content
Object: in order to overcome the deficiencies in the prior art, the utility model provides a kind of fibre optic temperature sensor for surface weather observation, for reducing the problems such as the large and temperature hysteresis error of solar radiation error existing for prior art is large.
Technical scheme: for solving the problems of the technologies described above, the technical solution adopted in the utility model is:
A kind of fibre optic temperature sensor for surface weather observation, comprise optical fiber grating temperature sensor probe, optical cable, fiber-optical grating temperature sensor (FBG) demodulator, optical fiber grating temperature sensor probe is connected with fiber-optical grating temperature sensor (FBG) demodulator by optical cable, also comprises the radiation shield for reducing solar radiation error and reduction temperature hysteresis error; Described radiation shield comprises three sheet metals, one piece of upper cover plate and one piece of lower shoe, and optical fiber grating temperature sensor probe is fixed on radiation shield middle position.
The described fibre optic temperature sensor for surface weather observation, it is characterized in that: lower shoe and upper cover plate be arranged in parallel, sheet metal is vertical with lower shoe to be arranged, sheet metal bottom is fixedly connected with lower shoe, sheet metal top is fixedly connected with upper cover plate, three metal plate section triangularity arrangements, form the container cavity for placing optical fiber grating temperature sensor probe.
The described fibre optic temperature sensor for surface weather observation, it is characterized in that: also comprise the plastics screw for fixed fiber grating temperature sensor probe positions, described sheet metal offers the screw passed for plastics screw, optical fiber grating temperature sensor probe is fixed by the formation Clamping Center, end of three plastics screws.
The described fibre optic temperature sensor for surface weather observation, is characterized in that: the material of described sheet metal, upper cover plate and lower shoe is aluminium.
The described fibre optic temperature sensor for surface weather observation, is characterized in that: between described adjacent metal sheets, angle is 60 degree.
The described fibre optic temperature sensor for surface weather observation, is characterized in that: described lower shoe offers the through hole passed for optical cable.
Preferably, the described fibre optic temperature sensor for surface weather observation, is characterized in that: three sheet metals are measure-alike, high 150mm, wide 40mm, thick 10mm.
Beneficial effect: the fibre optic temperature sensor for surface weather observation that the utility model provides, compared with prior art, optical fiber grating temperature sensor probe volume is little, therefore the radiation shield volume of fiber-optical grating temperature sensor is also less, much smaller than thermometer screen volume, be also less than traditional radiation shield volume.Optical fiber electrical insulation capability is strong, the impact not drenched with rain and be struck by lightning.The frequency of general electromagnetic radiation is more much lower than light wave, so the light signal transmitted in a fiber is not by the impact of electromagnetic interference (EMI), Electro Magnetic Compatibility is good.Three supports of the utility model fiber-optical grating temperature sensor radiation shield are metal material, and reflectivity is high, obviously can reduce solar radiation error.In addition, in traditional thermometer screen, air-flow needs first could arrive sensor through blade, causes temperature hysteresis error.And between the sheet metal of the utility model fiber-optical grating temperature sensor radiation shield and adjacent two sheet metals, leave space, the air-flow in some direction can be made directly to flow through optical fiber grating temperature sensor probe surface, thus reduce temperature hysteresis error.Fiber-optical grating temperature sensor (FBG) demodulator is connected with optical fiber grating temperature sensor probe by optical cable, obtains optical fiber grating temperature sensor probe measurement result by fiber-optical grating temperature sensor (FBG) demodulator.In sum, the utility model fiber-optical grating temperature sensor can reduce solar radiation error, reduces temperature hysteresis error, improves measuring accuracy.
Accompanying drawing explanation
Fig. 1 to Fig. 3 is structural representation of the present utility model.
In figure: sheet metal 1, plastics screw 2, first nut 3, optical fiber grating temperature sensor probe 4, through hole 5, lower shoe 6, upper cover plate 7, optical cable 8, fiber-optical grating temperature sensor (FBG) demodulator 9, second nut 10, screw 11.
Embodiment
Below in conjunction with specific embodiment, the utility model is further described.
As shown in Figure 1 to Figure 3, a kind of fibre optic temperature sensor for surface weather observation, comprise optical fiber grating temperature sensor probe 4, optical cable 8, fiber-optical grating temperature sensor (FBG) demodulator 9, optical fiber grating temperature sensor probe 4 is connected with fiber-optical grating temperature sensor (FBG) demodulator 9 by optical cable 8, also comprises the fiber-optical grating temperature sensor radiation shield for reducing solar radiation error and reduction temperature hysteresis error.Described radiation shield three sheet metals, 1, one piece of upper cover plate 7 and one piece of lower shoe 6 are formed, and optical fiber grating temperature sensor probe 4 is fixed on radiation shield middle position.Lower shoe 6 and upper cover plate 7 be arranged in parallel, sheet metal is vertical with lower shoe to be arranged, and sheet metal bottom is fixedly connected with lower shoe, and sheet metal top is fixedly connected with upper cover plate, three sheet metal 1 cross section triangularity arrangements, form the container cavity for placing optical fiber grating temperature sensor probe 4.Lower shoe 6 offers the through hole 5 passed for optical cable 8.
Also comprise the plastics screw 2 for fixed fiber grating temperature sensor probe positions, optical fiber grating temperature sensor probe is fixed by the formation Clamping Center, end described sheet metal offering screw 11, three the plastics screws 2 passed for plastics screw.
Compare wooden thermometer screen, plastics tradition radiation shield, the utility model effectively can reduce solar radiation error, reduce temperature hysteresis error.
As shown in Figure 1, three sheet metals 1 of fiber-optical grating temperature sensor radiation shield are screwed between lower shoe 6 and upper cover plate 7, in order to easy, do not draw the screw of connection three sheet metals and upper cover plate, lower shoe in the drawings.With plastics screw 2 through the first nut 3 outside sheet metal, then through the second nut 10 inside the screw 11 on sheet metal and sheet metal.Because the thermal conductivity of plastics screw is lower, even if the temperature of sheet metal is higher, be also not easily transmitted on optical fiber grating temperature sensor probe.Other five screws are installed all in this way, namely can be used for fixing optical fiber grating temperature sensor probe 4.Optical fiber grating temperature sensor probe 4 is connected with fiber-optical grating temperature sensor (FBG) demodulator 9 by optical cable 8.
As shown in Figure 2, three sheet metals 1 are vertically fixed on lower shoe 6, and three sheet metals all have 2 screws 11.
As shown in Figure 3, between sheet metal with adjacent two sheet metals, air line distance is equal.By 6 plastics screws, optical fiber grating temperature sensor probe 4 is fixed on the center of three sheet metals.
Embodiment one
In the present embodiment, optical fiber grating temperature sensor probe is the right cylinder of external diameter 6mm, long 50mm, and the cable outer diameter for connecting fiber grating temperature sensor probe and fiber-optical grating temperature sensor (FBG) demodulator is 3.5mm; Plastic spiral filament length is about 45mm, diameter 6.5mm; Three sheet metals are measure-alike, high 150mm, wide 40mm, thick 10mm; The long 120mm of upper cover plate, wide 120mm, thick 1mm; The long 100mm of lower shoe, wide 100mm, thick 1mm; Circularhole diameter 6mm in center on lower shoe.Contrast Fig. 3, angle 60 degree between three sheet metals.Because aluminium compares other metals have the advantages such as reflectivity is high, quality is light, so use aluminium as the material of three sheet metals, upper cover plate and lower shoes.Contrast Fig. 1, three sheet metals are vertically fixed between upper cover plate and lower shoe, and upper cover plate not only has the effect of bracing means, also can prevent the contacting rain water probe carrying dust secretly, cause the pollutants such as dust to be attached to optical fiber grating temperature sensor probe surface.Contrast Fig. 3, optical fiber grating temperature sensor probe is placed in sheet metal middle position, and optical fiber grating temperature sensor probe surface is equal to the horizontal range of three sheet metals, is about 17mm.
The above is only preferred implementation of the present utility model; be noted that for those skilled in the art; under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (7)
1. the fibre optic temperature sensor for surface weather observation, comprise optical fiber grating temperature sensor probe, optical cable, fiber-optical grating temperature sensor (FBG) demodulator, optical fiber grating temperature sensor probe is connected with fiber-optical grating temperature sensor (FBG) demodulator by optical cable, it is characterized in that: also comprise the radiation shield for reducing solar radiation error and reduction temperature hysteresis error; Described radiation shield comprises three sheet metals, one piece of upper cover plate and one piece of lower shoe, and optical fiber grating temperature sensor probe is fixed on radiation shield middle position.
2. the fibre optic temperature sensor for surface weather observation according to claim 1, it is characterized in that: lower shoe and upper cover plate be arranged in parallel, sheet metal is vertical with lower shoe to be arranged, sheet metal bottom is fixedly connected with lower shoe, sheet metal top is fixedly connected with upper cover plate, three metal plate section triangularity arrangements, form the container cavity for placing optical fiber grating temperature sensor probe.
3. the fibre optic temperature sensor for surface weather observation according to claim 2, it is characterized in that: also comprise the plastics screw for fixed fiber grating temperature sensor probe positions, described sheet metal offers the screw passed for plastics screw, optical fiber grating temperature sensor probe is fixed by the formation Clamping Center, end of three plastics screws.
4. the fibre optic temperature sensor for surface weather observation according to claim 1, is characterized in that: the material of described sheet metal, upper cover plate and lower shoe is aluminium.
5. the fibre optic temperature sensor for surface weather observation according to claim 2, is characterized in that: between described adjacent metal sheets, angle is 60 degree.
6. the fibre optic temperature sensor for surface weather observation according to claim 1, is characterized in that: described lower shoe offers the through hole passed for optical cable.
7. the fibre optic temperature sensor for surface weather observation according to claim 1, is characterized in that: three sheet metals are measure-alike, high 150mm, wide 40mm, thick 10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521000601.9U CN205157077U (en) | 2015-12-07 | 2015-12-07 | A optical fiber temperature sensor for ground meteorological observation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521000601.9U CN205157077U (en) | 2015-12-07 | 2015-12-07 | A optical fiber temperature sensor for ground meteorological observation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205157077U true CN205157077U (en) | 2016-04-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521000601.9U Expired - Fee Related CN205157077U (en) | 2015-12-07 | 2015-12-07 | A optical fiber temperature sensor for ground meteorological observation |
Country Status (1)
| Country | Link |
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| CN (1) | CN205157077U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017186101A1 (en) * | 2016-04-29 | 2017-11-02 | 南京微感电子科技有限公司 | Anti-radiation shield for meteorological measurement |
-
2015
- 2015-12-07 CN CN201521000601.9U patent/CN205157077U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017186101A1 (en) * | 2016-04-29 | 2017-11-02 | 南京微感电子科技有限公司 | Anti-radiation shield for meteorological measurement |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160413 Termination date: 20171207 |
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| CF01 | Termination of patent right due to non-payment of annual fee |