CN205562847U - Fiber grating formula tipping bucket rainfall measuring device - Google Patents
Fiber grating formula tipping bucket rainfall measuring device Download PDFInfo
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- CN205562847U CN205562847U CN201620307182.1U CN201620307182U CN205562847U CN 205562847 U CN205562847 U CN 205562847U CN 201620307182 U CN201620307182 U CN 201620307182U CN 205562847 U CN205562847 U CN 205562847U
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- tipping bucket
- cantilever beam
- rainfall
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- fiber bragg
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- 239000000835 fiber Substances 0.000 title claims abstract description 39
- 239000013307 optical fiber Substances 0.000 claims abstract description 8
- 230000006698 induction Effects 0.000 claims description 12
- 238000012545 processing Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000005259 measurement Methods 0.000 abstract description 21
- 230000008859 change Effects 0.000 abstract description 7
- 230000007547 defect Effects 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 235000014676 Phragmites communis Nutrition 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000002463 transducing effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Abstract
The utility model relates to a fiber grating formula tipping bucket rainfall measuring device. This fiber grating formula tipping bucket rainfall measuring device includes: consecutive rainfall response structure and cantilever structure, rainfall response structure includes single tipping bucket, be equipped with count magnet on single tipping bucket, cantilever structure includes the cantilever beam, the free end of cantilever beam be equipped with with count magnet corresponds the response magnet that sets up, the position that the cantilever beam is close to the stiff end is equipped with fiber bragg grating strain sensor. The utility model overcomes the defect of traditional clarinet changes through the atress of measuring the cantilever beam simultaneously, will receive the force variation number of times to change the number of times of tipping bucket upset into, and then realize the measurement to the rainfall, has avoided present applied optical fiber sensor's tipping bucket hyetometer, will reflect the mirror surface and install the measuring error who leads to the fact on the tipping bucket, has improved rainfall measuring accuracy, is applicable to long -time field measurement.
Description
Technical field
This utility model relates to transducing signal acquisition technique field, particularly relates to a kind of fiber grating
Formula tipping bucket rainfall measuring device.
Background technology
At present, tipping bucket rain gauge, because of its simple in construction, cheap, is widely used in
In weather monitoring.Tipping bucket rain gauge kind is more, is broadly divided into single tipping bucket and double skip,
But its key technology is the tongue tube for rainfall counting.Tipping bucket rain gauge main
Measurement error also comes from some characteristics of tongue tube self.
The major defect of dry-reed tube switch circuit has the following aspects:
1. fairly small and exquisite due to contact and the reed of tongue tube, it is difficult to bear high pressure or electric greatly
Stream.When electric current is excessive, reed can follow the string because of overheated；
2. contact is easily generated shake, causes pluviometer overcount；
3. dry-reed tube switch is the most fragile, and glass and sealing member are easy to breakage；
4. malfunction elimination operation is many, and fault tongue tube needs to detect with instrumentation.
In order to overcome the shortcoming of dry-reed tube switch circuit, Fiber Bragg Grating technology can be applied to rainfall
Measurement apparatus.The tilting bucket rain of existing application Fibre Optical Sensor, is arranged on mirror surface
On tipping bucket, when tipping bucket overturning, minute surface tilts, and light path changes, thus counts.
But easily form the globule due to mirror surface, the globule can affect the light path of reflection light, causes survey
Amount mistake.And mirror surface is fragile during installing, using, verification ratio when reinstalling
More complicated.
Utility model content
Technical problem to be solved in the utility model is: existing fiber grating tipping bucket rainfall is surveyed
The amount problem that measurement device is inaccurate, installation and checking is inconvenient.
For solving above-mentioned technical problem, the utility model proposes a kind of fiber Bragg grating type tipping bucket rain
Measuring device, this fiber Bragg grating type tipping bucket rainfall measuring device includes:
The rainfall induction structure being sequentially connected and cantilever beam structure；
Described rainfall induction structure includes that single tipping bucket, described single tipping bucket are provided with counting Magnet；
Described cantilever beam structure includes cantilever beam；
The free end of described cantilever beam is provided with the induced magnet being correspondingly arranged with described counting Magnet；
Described cantilever beam is provided with fiber Bragg grating strain sensor near the position of fixing end.
Alternatively, described rainfall induction structure also includes rain container and diversion funnel；
Described rain container is connected with described single tipping bucket by described diversion funnel.
Alternatively, this fiber Bragg grating type tipping bucket rainfall measuring device also includes pluviometer base；
Described rainfall induction structure also includes that tipping bucket base, described cantilever beam structure also include cantilever
Beam base；
Described tipping bucket base is connected with described pluviometer base by nut；
Described cantilever beam base is connected with described pluviometer base.
Alternatively, described tipping bucket base is provided with location screw.
Alternatively, described single tipping bucket includes the first small room and the second small room；
The first water outlet being correspondingly arranged with described first small room is also included on described pluviometer base
Funnel；
The second water outlet being correspondingly arranged with described second small room is also included on described pluviometer base
Funnel.
Alternatively, the position near fixing end of described cantilever beam is provided with slot area；
The opposite sides of described slot area is respectively equipped with fiber Bragg grating strain sensor.
Alternatively, this fiber Bragg grating strain sensor also includes signal processor；
Described signal detector is connected with described fiber Bragg grating strain sensor by optical fiber.
Alternatively, described signal processor includes light modulation demodulation module and processing unit, described
Fiber-optic grating sensor is connected with the input of described light modulation demodulation module, described light modulation solution
The outfan of mode transfer block is connected with described processing unit.
The fiber Bragg grating type tipping bucket rainfall measuring device that this utility model provides, overcomes traditional
The defect of clarinet, the stress by measuring cantilever beam changes, by the change frequency of stress simultaneously
Be changed into the number of times of tipping bucket upset, and then achieve the measurement to rainfall, it is to avoid existing should
With the tilting bucket rain of Fibre Optical Sensor, mirror surface is arranged on the measurement caused on tipping bucket by mistake
Difference, improves the accuracy of rainfall measurement, it is adaptable to field measurement for a long time.
Accompanying drawing explanation
By feature and advantage of the present utility model, accompanying drawing can be more clearly understood from reference to accompanying drawing
It is schematic and should not be construed as this utility model is carried out any restriction, in the accompanying drawings:
Fig. 1 shows the fiber Bragg grating type tipping bucket rainfall measurement dress of one embodiment of this utility model
The structural representation put；
Fig. 2 shows the fiber Bragg grating type tipping bucket rainfall measurement dress of one embodiment of this utility model
The structural representation of the cantilever beam put.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail.
Fig. 1 shows the fiber Bragg grating type tipping bucket rainfall measurement dress of one embodiment of this utility model
The structural representation put.Fig. 2 shows that the fiber Bragg grating type of one embodiment of this utility model turns over
The structural representation of the cantilever beam of bucket rainfall measuring device.As depicted in figs. 1 and 2, this embodiment
Fiber Bragg grating type tipping bucket rainfall measuring device, including:
The rainfall induction structure 1 being sequentially connected and cantilever beam structure 2；
Rainfall induction structure 1 includes that single tipping bucket 11, single tipping bucket 11 are provided with counting Magnet 111；
Cantilever beam structure 2 includes cantilever beam 21；
The free end of cantilever beam 21 is provided with and counts the induced magnet 211 that Magnet 11 is correspondingly arranged；
Cantilever beam is provided with fiber Bragg grating strain sensor 212 near the position of fixing end.
In the fiber Bragg grating type tipping bucket rainfall measuring device of the present embodiment, cantilever beam 21 is just to singly turning over
Struggle against 11 dead aheads, and counting Magnet 111 is fixed on tipping bucket 11 sidewall, and counting Magnet 111 turns at tipping bucket
Can not contact with the induced magnet 211 of cantilever beam 21 during Daoing.By cantilever beam 21 during installation
It is right against single tipping bucket 11, peak when induced magnet 211 is right against tipping bucket overturning, counts Magnet
111 change along with the upset of tipping bucket inswept cantilever beam 21 end, induced magnet 211 stress,
The wavelength of fiber Bragg grating strain sensor 212 thus change, thus realize rainfall counting.
The fiber Bragg grating type tipping bucket rainfall measuring device of the present embodiment, overcomes traditional clarinet
Defect, simultaneously by measure cantilever beam stress change, the change frequency of stress is changed into
The number of times of tipping bucket upset, and then achieve the measurement to rainfall, it is to avoid existing application optical fiber
The tilting bucket rain of sensor, is arranged on mirror surface the measurement error caused on tipping bucket, carries
The high accuracy of rainfall measurement, it is adaptable to field measurement for a long time.
In the optional embodiment of one, rainfall induction structure 1 also includes rain container 12 and draws
Hyponome 13；
Rain container 12 is connected with single tipping bucket 11 by diversion funnel 13.
It should be noted that the rainfall that rain container 12 is collected enters single tipping bucket by diversion funnel 13
11, when rainwater accumulates upset volume, owing to the action of gravity of water own makes single tipping bucket 11 overturn,
Counting Magnet 111 is to cantilever beam 21 run-down simultaneously, and magnetic force makes cantilever beam 21 produce deformation,
Thus the wavelength of fiber Bragg grating strain sensor 212 changes.So, rainfall reaches every time
During to upset volume, counting Magnet 111 is just to cantilever beam 21 run-down.
This fiber Bragg grating type tipping bucket rainfall measuring device also includes pluviometer base 3；
Rainfall induction structure 1 also includes that tipping bucket base 14, cantilever beam structure 2 also include at the bottom of cantilever beam
Seat 22；
Tipping bucket base 14 is connected with pluviometer base 3 by nut；
Cantilever beam base 22 is connected with pluviometer base 3.
Tipping bucket base 14 is by nut (not shown), rubber sheet gasket and pluviometer base 3
Being connected, this nut can regulate tipping bucket base and be allowed to be in level.Rubber sheet gasket will isolation simultaneously
Tipping bucket base 14 and pluviometer base 3, cause pluviometer base 3 when preventing due to tipping bucket overturning
Vibrations, thus eliminate the impact that cantilever beam is strained by these vibrations.
Further, tipping bucket base 14 is provided with location screw 141.
In actual applications, single tipping bucket 11 can be controlled by the height of regulation location screw 141
The maximum angle translated into.
Single tipping bucket 11 includes the first small room and the second small room；
Also include on pluviometer base 3 that be correspondingly arranged with described first small room first goes out hyponome
31；
Pluviometer base 3 also includes that be correspondingly arranged with described second small room second goes out hyponome
32。
In actual applications, rain container 12 is used for accepting rainwater, and rainwater enters through diversion funnel 13
Single tipping bucket 11, when a small room of single tipping bucket holds water, another is waited for, tipping bucket
Left and right the two of the parts always rotation that struggles against is in state on, once.
The impact caused for compensates, improves the degree of accuracy and sensitivity measured, outstanding
The position near fixing end of arm beam 21 is provided with slot area 213；
The opposite sides of slot area 213 is respectively equipped with fiber Bragg grating strain sensor 212.
Fix as in figure 2 it is shown, cantilever beam 21 is one end, one end beam freely, a length of L of beam,
Induced magnet 211 is fixed on the free end of beam, bears the effect of load F, at load action
The free end of underbeam is subjected to displacement, and cantilever beam 21 uses the structure that double-sided symmetrical is slotted, and can increase
Optic fiber grating wavelength variable quantity under identical stress, fiber Bragg grating strain sensor symmetry is fixed on outstanding
On arm beam tow sides.Under cantilever beam structure, the centre wavelength drift of fiber Bragg grating strain sensor
Shifting amount becomes preferable linear relationship with cantilever beam free end stress.By double-edged optical fiber light
Grid centre wavelength carries out making difference process, can effectively eliminate the impact of temperature, thus obtain rainfall
Size.Use double grating formula strain transducer, not only there is passive, electromagnetism interference, resist
The advantages such as corrosion, also have compensation temperature sensitive, the characteristic of reduction noise, thus measurement result
More accurate.
Further, this fiber Bragg grating strain sensor also includes that signal processor (does not shows in figure
Go out)；
Described signal detector is connected with fiber Bragg grating strain sensor 212 by optical fiber.
Described signal processor includes light modulation demodulation module and processing unit, optical fiber grating sensing
Device 212 is connected with the input of described light modulation demodulation module, described light modulation demodulation module
Outfan is connected with described processing unit.
The fiber Bragg grating type tipping bucket rainfall measuring device that this utility model provides, overcomes traditional
The defect of clarinet, the stress by measuring cantilever beam changes, by the change frequency of stress simultaneously
Be changed into the number of times of tipping bucket upset, and then achieve the measurement to rainfall, it is to avoid existing should
With the tilting bucket rain of Fibre Optical Sensor, mirror surface is arranged on the measurement caused on tipping bucket by mistake
Difference, improves the accuracy of rainfall measurement, it is adaptable to field measurement for a long time.
Although be described in conjunction with the accompanying embodiment of the present utility model, but people in the art
Member can make in the case of without departing from spirit and scope of the present utility model various amendment and
Modification, within the scope of such amendment and modification each fall within and are defined by the appended claims.
Claims (8)
1. a fiber Bragg grating type tipping bucket rainfall measuring device, it is characterised in that including:
The rainfall induction structure being sequentially connected and cantilever beam structure；
Described rainfall induction structure includes that single tipping bucket, described single tipping bucket are provided with counting Magnet；
Described cantilever beam structure includes cantilever beam；
The free end of described cantilever beam is provided with the induced magnet being correspondingly arranged with described counting Magnet；
Described cantilever beam is provided with fiber Bragg grating strain sensor near the position of fixing end.
Fiber Bragg grating type tipping bucket rainfall measuring device the most according to claim 1, its feature
Being, described rainfall induction structure also includes rain container and diversion funnel；
Described rain container is connected with described single tipping bucket by described diversion funnel.
Fiber Bragg grating type tipping bucket rainfall measuring device the most according to claim 1, its feature
It is, also includes pluviometer base；
Described rainfall induction structure also includes that tipping bucket base, described cantilever beam structure also include cantilever
Beam base；
Described tipping bucket base is connected with described pluviometer base by nut；
Described cantilever beam base is connected with described pluviometer base.
Fiber Bragg grating type tipping bucket rainfall measuring device the most according to claim 3, its feature
Being, described tipping bucket base is provided with location screw.
Fiber Bragg grating type tipping bucket rainfall measuring device the most according to claim 3, its feature
Being, described single tipping bucket includes the first small room and the second small room；
The first water outlet being correspondingly arranged with described first small room is also included on described pluviometer base
Funnel；
The second water outlet being correspondingly arranged with described second small room is also included on described pluviometer base
Funnel.
Fiber Bragg grating type tipping bucket rainfall measuring device the most according to claim 1, its feature
Being, the position near fixing end of described cantilever beam is provided with slot area；
The opposite sides of described slot area is respectively equipped with fiber Bragg grating strain sensor.
Fiber Bragg grating type tipping bucket rainfall measuring device the most according to claim 1, its feature
It is, also includes signal processor；
Described signal detector is connected with described fiber Bragg grating strain sensor by optical fiber.
Fiber Bragg grating type tipping bucket rainfall measuring device the most according to claim 7, its feature
Being, described signal processor includes light modulation demodulation module and processing unit, described optical fiber light
Gate sensor is connected with the input of described light modulation demodulation module, described light modulation demodulation module
Outfan be connected with described processing unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620307182.1U CN205562847U (en) | 2016-04-13 | 2016-04-13 | Fiber grating formula tipping bucket rainfall measuring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620307182.1U CN205562847U (en) | 2016-04-13 | 2016-04-13 | Fiber grating formula tipping bucket rainfall measuring device |
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| CN205562847U true CN205562847U (en) | 2016-09-07 |
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| CN201620307182.1U Active CN205562847U (en) | 2016-04-13 | 2016-04-13 | Fiber grating formula tipping bucket rainfall measuring device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107764593A (en) * | 2017-11-17 | 2018-03-06 | 河海大学 | A kind of continuous mixed sample harvester and its water sampling method |
| CN110017872A (en) * | 2019-04-19 | 2019-07-16 | 南通感忆达信息技术有限公司 | A kind of passive type fuel gas monitoring system and method |
| CN110118586A (en) * | 2019-05-07 | 2019-08-13 | 北京邮电大学 | A kind of dust storm monitoring system and method based on fiber-optic grating sensor |
| CN115857063A (en) * | 2022-11-24 | 2023-03-28 | 北京精诚恒创科技有限公司 | Rain and snow quantity sensor based on fiber bragg grating and rain and snow quantity measuring method |
-
2016
- 2016-04-13 CN CN201620307182.1U patent/CN205562847U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107764593A (en) * | 2017-11-17 | 2018-03-06 | 河海大学 | A kind of continuous mixed sample harvester and its water sampling method |
| CN107764593B (en) * | 2017-11-17 | 2024-04-09 | 南京方兴未艾农业科技有限公司 | Continuous mixed water sample collection device and water sample collection method thereof |
| CN110017872A (en) * | 2019-04-19 | 2019-07-16 | 南通感忆达信息技术有限公司 | A kind of passive type fuel gas monitoring system and method |
| CN110118586A (en) * | 2019-05-07 | 2019-08-13 | 北京邮电大学 | A kind of dust storm monitoring system and method based on fiber-optic grating sensor |
| CN115857063A (en) * | 2022-11-24 | 2023-03-28 | 北京精诚恒创科技有限公司 | Rain and snow quantity sensor based on fiber bragg grating and rain and snow quantity measuring method |
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