CN102879836B - Use pluviometer and the railway anti-disaster rainfall monitoring system of optical fiber measurement - Google Patents
Use pluviometer and the railway anti-disaster rainfall monitoring system of optical fiber measurement Download PDFInfo
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- CN102879836B CN102879836B CN201210333228.3A CN201210333228A CN102879836B CN 102879836 B CN102879836 B CN 102879836B CN 201210333228 A CN201210333228 A CN 201210333228A CN 102879836 B CN102879836 B CN 102879836B
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Abstract
The invention discloses a kind of pluviometer using optical fiber measurement and use this udometric railway anti-disaster rainfall monitoring system.This pluviometer includes that optical fiber rain gage bucket and signal handling equipment, optical fiber rain gage bucket include Fibre Optical Sensor, and Fibre Optical Sensor is connected with signal handling equipment by optical cable.This railway anti-disaster rainfall monitoring system includes being laid in multiple optical fiber rain gage buckets of different rainfall monitoring point and being arranged on the signal handling equipment of Surveillance center, is connected by optical cable between multiple optical fiber rain gage buckets and signal handling equipment.Pluviometer provided by the present invention and railway anti-disaster rainfall monitoring system, by the combination of Fibre Optical Sensor and mechanical part, rainfall is measured, the passive of measurement equipment is not only achieved at rainfall monitoring point, without remote power feeding, and utilize optical cable transmission signal, can avoid the interference of outer signals, capacity of resisting disturbance is strong, and reliability is high.
Description
Technical field
The present invention relates to a kind of pluviometer measured the amount of rainfall, particularly relate to a kind of pluviometer using optical fiber measurement mode, the present invention also relates to a kind of this udometric railway anti-disaster rainfall monitoring system of employing.
Background technology
In prior art, conventional pluviometer is mainly mechanical type pluviometer, and one of which is siphon rainfall recorder, and another kind is tipping-bucket rain-gauge.Additionally, the most a small amount of Radar and Rain Gauge Data, optics pluviometer and pressure pluviometer etc..In actual use, occupy the majority with siphon rainfall recorder and tipping-bucket rain-gauge.Wherein, siphon rainfall recorder adds up rainfall by the height change and siphon number of times measuring float in float chamber, and tipping-bucket rain-gauge realizes rainfall statistics of variables by the upset number of times of record tipping bucket preset value and tipping bucket.In above-mentioned pluviometer, it is configured with record float variable condition and the Circuits System of tipping bucket reversion number of times and A/D conversion system.
In railway anti-disaster early warning system, when pluviometer is laid in the wild, utilize pluviometer rainfall to be measured and record, need, to pluviometer remote power feeding, then to transfer data to be positioned at the data storage of Surveillance center and processing equipment by communication line.Depolarization minority pluviometer is installed outside solaode, and most pluviometer all use to draw from far-end and set power circuit and be powered, and construct very inconvenient.
In recent years, people once worked out the pluviometer using communication transmission rain condition data.The tipping-bucket rain-gauge of the band wireless data transmitter as disclosed in the Chinese invention patent application of Application No. 201110250185.8.Upper tipping bucket that this pluviometer mainly by urceolus and sets gradually at outer barrel from top to down, metering tipping bucket, rain container are constituted, and metering tipping bucket connects data acquisition unit, and data acquisition unit is connected with the GPRS wireless data transmitter being arranged in seal box.This pluviometer realizes being wirelessly transferred of data by setting up wireless data transmitter.In addition, this pluviometer also includes the solar panel being installed on bracing frame and the accumulator being connected with solar panel, accumulator is connected with data collection processor and GPRS wireless data transmitter, powers for data collection processor and GPRS wireless data transmitter.So, this kind of wireless data transmission mode need nonetheless remain for providing power supply to wireless data transmitter, it is impossible to fundamentally solves udometric remote power feeding problem.And, wireless signal is easily disturbed by outer signals such as power frequency components, the faults such as random interruption occurs, it is impossible to ensure udometric real-time Data Transmission.
In railway transportation, rainfall monitoring system, as the important component part of Railway Disaster early warning system, needs the control point arranged the most, and requires that it has high reliability.And existing rainfall monitoring system is proposed higher requirement to data transmission channel, power supply mode, more having highlighted equipment needs the contradiction of power supply.Therefore, in the urgent need to providing a kind of without power supply and have the pluviometer of high reliability in practice.
Summary of the invention
The technical problem to be solved is to provide a kind of pluviometer using optical fiber measurement.
Meanwhile, present invention also offers the above-mentioned udometric railway anti-disaster rainfall monitoring system of a kind of employing.
In order to reach foregoing invention purpose, the present invention uses following technical proposals:
A kind of pluviometer using optical fiber measurement, including optical fiber rain gage bucket and signal handling equipment, described optical fiber rain gage bucket includes Fibre Optical Sensor, and described Fibre Optical Sensor is connected with described signal handling equipment by optical cable.
More preferably, described optical fiber rain gage bucket includes float chamber, is positioned at the float of described float chamber, and for measuring the Fibre Optical Sensor of described float height change.
Further, described Fibre Optical Sensor is fixed on described float.
Or, described Fibre Optical Sensor is fixed on above described float chamber, at the Magnet that two homopolarities of two surface configurations that described Fibre Optical Sensor is relative with described float are relative.
More preferably, described optical fiber rain gage bucket includes bucket tipping gear, and the mirror surface being arranged on described bucket tipping gear, arranges Fibre Optical Sensor near described bucket tipping gear.
More preferably, described bucket tipping gear includes water knockout drum and is arranged on two tipping bucket dishes of described water knockout drum both sides, and described mirror surface is arranged on described water knockout drum, and described Fibre Optical Sensor is arranged on the outside of the funnel above described bucket tipping gear.
More preferably, described optical fiber rain gage bucket includes weighing frame and being arranged on the water tank above described weighing frame, and is arranged on described weighing frame for measuring the Fibre Optical Sensor of the deformation quantity of described weighing frame.
Further, described signal handling equipment includes light modulation demodulation module and processing unit, and described Fibre Optical Sensor is connected with the input of described light modulation demodulation module by optical cable, and the outfan of described light modulation demodulation module is connected with processing unit.
Further, multiple described optical fiber rain gage buckets are connected with same signal handling equipment.
One comprises above-mentioned udometric railway anti-disaster rainfall monitoring system, and including being laid in multiple optical fiber rain gage buckets of rainfall monitoring point and being arranged on the signal handling equipment of Surveillance center, the plurality of optical fiber rain gage bucket is connected by optical cable with described signal handling equipment.
Pluviometer provided by the present invention passes through fiber sensor measuring rainfall, and carry out signal transmission by optical cable, eliminate the power supply in tradition pluviometer, achieve the passive of equipment, and the transmitting procedure making data is not easily susceptible to outer signals interference, having the highest reliability, the especially suitable point of rainfall monitoring in the wild is laid.In addition, the railway anti-disaster rainfall monitoring system that the present invention provides, multiple optical fiber rain gage buckets are arranged in the rainfall monitoring point that field is different, and be connected with the same signal handling equipment being located at Control Room by optical cable, realize the monitoring to field rainfall so that the layout of railway anti-disaster rainfall monitoring system is the simplest and convenient, and ensure that the accuracy that signal transmits simultaneously, capacity of resisting disturbance is strong, and reliability is high.
Accompanying drawing explanation
Fig. 1 is in the first embodiment of the present invention, the structural representation of optical fiber rain gage bucket；
Fig. 2 is in the first embodiment of the present invention, udometric overall structure schematic diagram；
Fig. 3 is in the second embodiment of the present invention, the structural representation of optical fiber rain gage bucket；
Fig. 4 is in the second embodiment of the present invention, the measuring principle figure of optical fiber rain gage bucket；
Fig. 5 is in the third embodiment of the present invention, the structural representation of optical fiber rain gage bucket；
Fig. 6 is the structural representation of railway anti-disaster rainfall monitoring system provided by the present invention.
Detailed description of the invention
With specific embodiment, the summary of the invention of the present invention is described in detail below in conjunction with the accompanying drawings.
The invention provides a kind of pluviometer using optical fiber measurement, including optical fiber rain gage bucket 1 and signal handling equipment 2, optical fiber rain gage bucket 1 includes the Fibre Optical Sensor for measuring rainfall, and Fibre Optical Sensor is connected with signal handling equipment 2 by optical cable.
Above-mentioned pluviometer can include siphon rainfall recorder, tipping-bucket rain-gauge and three kinds of embodiments of weighing type rain gauge.In the following embodiments, three kinds of udometric concrete structures and operation principle to comprising Fibre Optical Sensor are specifically described respectively.
First embodiment:
Siphon rainfall recorder includes optical fiber rain gage bucket 1 and signal handling equipment 2, wherein, comprises Fibre Optical Sensor 15 in optical fiber rain gage bucket 1, and Fibre Optical Sensor 15 is connected with signal handling equipment 2 by optical cable 30.As it is shown in figure 1, optical fiber rain gage bucket 1 has Packed shell 10, offer opening on the top of shell 10, be provided with rain container 11.Funnel 12 is positioned at the lower section of rain container 11, and is connected with rain container 11.Arranging bracing frame 10A in shell 10, float chamber 13 is arranged on bracing frame 10A, and certainly, float chamber 13 can also be set directly at the bottom of shell 10.The bottom of float chamber 13 is stretched in the lower end of funnel 12, is provided with float 14 inside float chamber 13, and float 14 is fixed together with Fibre Optical Sensor 15, can fix weight 16 in the lower section of Fibre Optical Sensor 15.Fibre Optical Sensor 15 is connected with signal handling equipment 2 by optical cable 30.Additionally, be provided with the water inlet of siphon 17 in the bottom of float chamber 13, siphon 17 connects with float chamber 13, when the water level in float chamber 13 reaches siphon height, and the siphon 17 rainwater in rapid deflation float chamber 13.
As shown in Figure 1, this embodiment uses fiber-optic grating sensor, fiber-optic grating sensor is fixed together with float 14, along with the accumulation of rainwater or emptying in float chamber 13, float 14 rises or falls in water, thus cause stretching or the compression of fiber-optic grating sensor, thus change the optical property of signal, as changed the intensity of light, wavelength, frequency, phase place, polarization state etc..On signal handling equipment 2, by analyzing the fiber-optic grating sensor change to signal in stretching or compression process, restore the power that float 14 is suffered in water, thus obtain the height of water level in float chamber 13.
Certainly, Fibre Optical Sensor 15 can not also be fixed together with float 14, such as, Fibre Optical Sensor 15 is fixed on a certain fixing position above float chamber 13.By being arranged on by the way of relative on the opposite face of float 14 and Fibre Optical Sensor 15 with homopolarity by two Magnet, sense the height change of float 14.When float chamber 13 middle water level changes, the height of float 14 changes, and the repulsive force between float 14 and Fibre Optical Sensor 15 can cause Fibre Optical Sensor 15 to deform upon, thus changes the optical property of signal.Signal handling equipment 2 can restore the relative change in location between float 14 with Fibre Optical Sensor 15 by analyzing the change of signal, thus calculates the height of water level in float chamber 13.
As described in Figure 2, signal handling equipment 2 includes that light modulation demodulation module 21 and processing unit 22, Fibre Optical Sensor 15 are connected with the input of light modulation demodulation module 21 by optical cable 30, and the outfan of light modulation demodulation module 21 is connected with processing unit 22.Wherein, light modulation demodulation module 21 is for receiving the signal of optical cable transmission, and is transformed into the signal of telecommunication, and is calculated by processing unit 22, it is thus achieved that the Strength Changes of a Precipitation Process, beginning and ending time and precipitation.
Below the measurement process of the siphon rainfall recorder using Fibre Optical Sensor 15 is introduced.When rainfall occurs, the rainwater that rain container 11 receives flows into float chamber 13 through funnel 12, float 14 raises with water level in float chamber 13 and rises, during float 14 moves, Fibre Optical Sensor 15 is caused to deform upon, changing the optical property of signal, Fibre Optical Sensor 15 transmits a signal to signal handling equipment 2 in real time, thus records whole rainfall.When float 14 rises to certain altitude, the water level in float chamber 13 reaches siphon height, and siphon 17 occurs siphon, is discharged by the rainwater in float chamber 13.At the end of siphon, float 14 makes zero position, and along with the carrying out of rainfall, the rainwater in float chamber 13 starts the accumulation of a new round, and meanwhile, Fibre Optical Sensor 15 sends optical signals to signal handling equipment 2 and carries out rainfall record, so repeats.Light modulation demodulation module 21 in signal handling equipment 2 receives the signal of Fibre Optical Sensor 15, it is demodulated, obtain live signal, contrast by live signal Yu primary signal, judge the height of water level in float chamber 13, the change curve of record water level, and calculate rain time, rainfall and rainfall intensity by this curve.
Second embodiment:
Tipping-bucket rain-gauge includes optical fiber rain gage bucket 1 and signal handling equipment 2, and in this embodiment, the structure of signal handling equipment 2 is identical with first embodiment, does not repeats them here.
As it is shown on figure 3, optical fiber rain gage bucket 1 includes rain container 41, is positioned at the funnel 42 below rain container 41 and is positioned at the bucket tipping gear 43 below funnel 42.Understanding in conjunction with Fig. 4, bucket tipping gear 43 has the water knockout drum 43A being arranged on base support 44 and is respectively arranged at two tipping bucket dish 43B of water knockout drum 43A both sides, and bucket tipping gear 43 is rotatably attached with base support 44 by bearing 43C.Water knockout drum 43A arranges mirror surface 55, fiber-optic grating sensor 45 is arranged on the outside of funnel 42 or fiber-optic grating sensor 45 is arranged on other positions near water knockout drum 43A, Fibre Optical Sensor 45 has reception optical fiber, for receiving the optical fiber through mirror surface 55 reflection, Fibre Optical Sensor 45 is connected with signal handling equipment 2 by optical cable 60.When bucket tipping gear 43 occurs upset, the signal of Fibre Optical Sensor 45 changes, and can obtain the upset number of times of bucket tipping gear 43 by analyzing the change of signal.
Also including base 52 in optical fiber rain gage bucket, base 52 is provided with the aquamanile 46 of corresponding tipping bucket dish 43B, in order to ensure the normal upset of bucket tipping gear 43, can be provided for regulating the levelling device of bucket tipping gear 43 balance on bucket tipping gear 43.
Additionally, in order to ensure the tipping-bucket rain-gauge certainty of measurement when middle light rain and heavy showers simultaneously, can arrange two set bucket tipping gears in tilting bucket rain simultaneously, the tipping bucket dish in two set bucket tipping gears uses different preset values.Such as shown in Fig. 3, below water container 46, outlet is set, and set gradually below this outlet funnel 47, bucket tipping gear 48, for fixing base support 49 and the aquamanile 51 of bucket tipping gear 48, aquamanile 51 is fixed on base 52, the stainless steel casing of cylinder can be set above base 52, whole optical fiber rain gage bucket is wrapped in shell, prevents above-mentioned frame for movement because getting rusty or impurity blocks and stops normally overturning.
In like manner, mirror surface 55 can be set on bucket tipping gear 48, and fiber-optic grating sensor 50 is arranged on outside funnel 47.When bucket tipping gear 48 occurs upset, the reception signal in Fibre Optical Sensor 50 changes, and can obtain the upset number of times of bucket tipping gear 48 by analyzing the change of signal.In this pluviometer, it is less value, such as 0.1mm by the tipping bucket default settings in bucket tipping gear 43, the tipping bucket preset value of bucket tipping gear 48 is set to relatively large value, such as 0.5mm or 1mm, so can ensure the certainty of measurement of heavy rain and light rain simultaneously.
Below the work process of the tipping-bucket rain-gauge using fiber-optic grating sensor 45 and 50 is introduced.Rain container 41 receives rainfall, and entered in tipping bucket dish 43B by funnel 42 and water knockout drum 43A, when the rainwater in tipping bucket dish 43B reaches preset value, bucket tipping gear 43 overturns under the action of gravity of rainwater, rainwater in turned letter tipping bucket dish 43B, receives rainwater by another tipping bucket dish 43B simultaneously.In the switching process of bucket tipping gear 43, mirror surface 55 run-off the straight, light path changes, and the optical signal that fiber-optic grating sensor 45 receives changes, thus fiber-optic grating sensor 45 realizes once counting.In rainfall, bucket tipping gear 43 constantly overturns so that fiber-optic grating sensor 45 constantly counts, thus realizes accumulation and the statistics of rainfall.Bucket tipping gear 48 is similar with the work process of above-mentioned bucket tipping gear 43 and Fibre Optical Sensor 45 with the work process of Fibre Optical Sensor 50, only difference is that, Fibre Optical Sensor 45 and 50 occurs once to count, corresponding rainfall is different, the tipping bucket preset value of the most corresponding bucket tipping gear, can calculate rainfall by tipping bucket preset value and tipping bucket number of times.
3rd embodiment:
Weighing type rain gauge includes optical fiber rain gage bucket 1 and signal handling equipment 2, and the structure of the signal handling equipment 2 in this embodiment is identical with first embodiment, does not repeats them here.
As it is shown in figure 5, optical fiber rain gage bucket 1 has Packed shell 70, the opening part on the upside of shell 70 in this embodiment, being provided with rain container 71, funnel 72 is positioned at the lower section of rain container 71, and is connected with rain container 71, and the lower end of funnel 72 is stretched into bottom water tank 73.Weighing frame 74 is set in shell 10, water tank 73 is arranged on above weighing frame 74, being provided with fiber-optic grating sensor 75 weighing on frame 74 position corresponding to water tank 73, fiber-optic grating sensor 75 weighs the frame 74 deformation quantity under rainwater effect obtain the weight of rainwater in water tank 73 by measuring.Fiber-optic grating sensor 75 is connected with signal handling equipment 2 by optical cable 80.Additionally, be provided with the water inlet of siphon 76 in the bottom of water tank 73, siphon 76 connects with water tank 73, when the water level in water tank 73 reaches siphon height, and the siphon 76 rainwater in rapid deflation water tank 73.
Below the measurement process of this weighing type rain gauge is introduced.When rainfall occurs, the rainwater that rain container 71 receives flows into water tank 73 through funnel 72；Along with the increase of rainwater in water tank 73, weigh frame 74 and occur bending and deformation, be arranged on the fiber-optic grating sensor 75 weighed on frame 74 and also deform upon, thus change the signal in fiber-optic grating sensor 75；By the real-time monitoring to fiber-optic grating sensor 75 signal, the deformation quantity weighing frame 74 can be analyzed, thus record and weigh above frame 74 weight of rainwater in water tank 73, it is thus achieved that rainfall in real time.When in water tank 73, accumulation of rainwater is to certain altitude, water level reaches siphon height, and siphon 76 occurs siphon, is discharged by the rainwater in water tank 73.At the end of siphon, the signal of fiber-optic grating sensor 75 recovers, and along with the carrying out of rainfall, the rainwater in water tank 73 starts the accumulation of a new round, and meanwhile, fiber-optic grating sensor 75 sends the signal to signal handling equipment 2 and carries out rainfall record, so repeats.Light modulation demodulation module 21 in signal handling equipment 2 receives the signal of Fibre Optical Sensor 15, is demodulated it, it is thus achieved that live signal, by the contrast of live signal Yu primary signal, it is judged that the weight of rainwater in water tank 73, thus obtains rainfall.
Above the process using Fibre Optical Sensor to measure rainfall in three kinds of pluviometer is described in detail.In like manner, it is also possible to Fibre Optical Sensor is used for other kinds of pluviometer and measures, above-described embodiment use fiber-optic grating sensor can also replace with other Fibre Optical Sensor.
Pluviometer provided by the present invention includes the optical fiber rain gage bucket 1 containing Fibre Optical Sensor and signal handling equipment 2, multiple optical fiber rain gage buckets 1 can be connected with same signal handling equipment 2 by optical cable, thus utilize a signal handling equipment 2 that multiple udometric rainfall measurement results are recorded and analyzed, simplify udometric equipment.And in railway anti-disaster rainfall monitoring system, need to arrange multiple fields rainfall monitoring point.Therefore, present invention also offers one and utilize above-mentioned udometric railway anti-disaster rainfall monitoring system, including being laid in multiple optical fiber rain gage buckets 1 of different fields rainfall monitoring point and being arranged on the signal handling equipment 2 of Surveillance center, multiple optical fiber rain gage buckets 1 are connected by optical cable with signal handling equipment 2.Specifically, as shown in Figure 6, can (optical fiber rain gage bucket 1 to optical fiber rain gage bucket n) be arranged in different rainfall monitoring points by n optical fiber rain gage bucket, and signal handling equipment 2 is located at Surveillance center, by optical cable, all optical fiber rain gage buckets are connected with this signal handling equipment 2, signal handling equipment 2 is connected with central processor equipment and the display device of Surveillance center, thus realizes the real-time monitoring of the rainfall to multiple rainfall monitoring points.The arrangement of this rain gage bucket is easy to the integral monitoring to multiple monitoring points, not only achieves the passive of rainfall measurement equipment at rainfall monitoring point, it is not necessary to remote power feeding, and utilize optical cable transmission signal, can avoid the interference to signal such as power frequency component, capacity of resisting disturbance is strong, and reliability is high.
In sum, the invention discloses a kind of pluviometer using optical fiber measurement, and provide a kind of railway anti-disaster rainfall monitoring system simultaneously, including optical fiber rain gage bucket and signal handling equipment, optical fiber rain gage bucket includes the Fibre Optical Sensor for measuring rainfall, and Fibre Optical Sensor is connected with signal handling equipment by optical cable.This pluviometer passes through fiber sensor measuring rainfall, and carries out signal transmission by optical cable, it is to avoid traditional pluviometer needs the requirement of configuration power supply at rainfall monitoring point, it is achieved that the passive of equipment.In addition, multiple optical fiber rain gage buckets can be arranged in the rainfall monitoring point that field is different, and by optical cable, multiple optical fiber rain gage buckets are connected with the same signal handling equipment being located at Control Room, realize the monitoring to field rainfall, the layout making railway rain measurement system is the simplest and convenient, and pass through optical cable transmission signal so that the transmitting procedure of data is not easily susceptible to outer signals interference, has high reliability.
Pluviometer and this udometric railway anti-disaster rainfall monitoring system of employing to employing optical fiber measurement provided by the present invention have been described in detail above.To those skilled in the art, any change done on this basis, all should contain within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.
Claims (4)
1. the siphon rainfall recorder using optical fiber measurement, it is characterised in that include optical fiber rainfall
Cylinder and signal handling equipment；
Described optical fiber rain gage bucket includes Fibre Optical Sensor, described Fibre Optical Sensor by optical cable with
Described signal handling equipment connects；
Described optical fiber rain gage bucket includes float chamber, is positioned at the float of described float chamber, Yi Jiyong
In the Fibre Optical Sensor measuring described float height change；
Described Fibre Optical Sensor is fixed on above described float chamber, in described Fibre Optical Sensor and institute
State the Magnet that relative two homopolarities of two surface configurations of float are relative；
Described float rises or falls along with water level in described float chamber, causes Fibre Optical Sensor
Stretching or compression, thus change the optical property of signal；On described signal handling equipment,
By analyzing the Fibre Optical Sensor change to signal in stretching or compression process, restore float
Power suffered in water, thus obtain the height of water level in float chamber.
2. siphon rainfall recorder as claimed in claim 1, it is characterised in that:
Described signal handling equipment includes light modulation demodulation module and processing unit, and described optical fiber passes
Sensor is connected with the input of described light modulation demodulation module by optical cable, and described light modulation demodulates
The outfan of module is connected with processing unit.
3. siphon rainfall recorder as claimed in claim 1, it is characterised in that:
Multiple described optical fiber rain gage buckets are connected with same signal handling equipment.
4. one kind includes the railway of siphon rainfall recorder described in any one in claims 1 to 3
Take precautions against natural calamities rainfall monitoring system, it is characterised in that include the multiple optical fiber rain being laid in rainfall monitoring point
Graduated cylinder and the signal handling equipment being arranged on Surveillance center, the plurality of optical fiber rain gage bucket is with described
Signal handling equipment is connected by optical cable.
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| CN201210333228.3A CN102879836B (en) | 2012-09-10 | 2012-09-10 | Use pluviometer and the railway anti-disaster rainfall monitoring system of optical fiber measurement |
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| CN201210333228.3A CN102879836B (en) | 2012-09-10 | 2012-09-10 | Use pluviometer and the railway anti-disaster rainfall monitoring system of optical fiber measurement |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103345004B (en) * | 2013-06-17 | 2015-08-12 | 华中科技大学 | Adopt rainfall monitoring network and the method for fiber grating siphon rainfall recorder |
| CN103969704B (en) * | 2014-05-16 | 2016-01-27 | 上海市宝山区气象局 | A kind of photoelectric coupling type skip bucket rainfall sensor |
| CN106405685A (en) * | 2016-08-26 | 2017-02-15 | 无锡信大气象传感网科技有限公司 | Rainfall induction sensor |
| CN107907921B (en) * | 2017-12-27 | 2024-05-24 | 盐城工学院 | Double-turndown funnel type fiber bragg grating rainfall sensor with temperature self-compensation characteristic |
| CN109343156B (en) * | 2018-12-10 | 2020-12-15 | 安徽沃特水务科技有限公司 | Rain-proof amount report missing remote measurement terminal machine |
| CN110082843B (en) * | 2019-06-05 | 2021-11-16 | 广西师范大学 | Inclined float type siphon weak reflection fiber grating rain gauge and rain gauge array |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4007888B2 (en) * | 2002-09-19 | 2007-11-14 | エヌ・ティ・ティ・インフラネット株式会社 | Optical rainfall measuring device and method |
| CN102354432A (en) * | 2011-09-30 | 2012-02-15 | 昆明理工大学 | Landslip and debris flow early warning system based on MESH network |
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| JP2006349370A (en) * | 2005-06-13 | 2006-12-28 | Ntt Infranet Co Ltd | Optical rainfall measuring apparatus and optical rainfall measuring system |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4007888B2 (en) * | 2002-09-19 | 2007-11-14 | エヌ・ティ・ティ・インフラネット株式会社 | Optical rainfall measuring device and method |
| CN102354432A (en) * | 2011-09-30 | 2012-02-15 | 昆明理工大学 | Landslip and debris flow early warning system based on MESH network |
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