CN115185019A - Novel weighing type rain gauge and measuring method - Google Patents
Novel weighing type rain gauge and measuring method Download PDFInfo
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- CN115185019A CN115185019A CN202210901269.1A CN202210901269A CN115185019A CN 115185019 A CN115185019 A CN 115185019A CN 202210901269 A CN202210901269 A CN 202210901269A CN 115185019 A CN115185019 A CN 115185019A
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- 238000005303 weighing Methods 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000001556 precipitation Methods 0.000 claims abstract description 65
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000007787 solid Substances 0.000 claims abstract description 23
- 238000005259 measurement Methods 0.000 claims abstract description 13
- 238000006243 chemical reaction Methods 0.000 claims description 12
- 238000001514 detection method Methods 0.000 claims description 9
- 238000005485 electric heating Methods 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 8
- 238000002844 melting Methods 0.000 claims description 7
- 230000008018 melting Effects 0.000 claims description 7
- 238000009413 insulation Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 238000003682 fluorination reaction Methods 0.000 claims description 3
- 230000002209 hydrophobic effect Effects 0.000 claims description 3
- 239000000155 melt Substances 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims 1
- 239000007788 liquid Substances 0.000 description 3
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 2
- 235000017491 Bambusa tulda Nutrition 0.000 description 2
- 241001330002 Bambuseae Species 0.000 description 2
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000011425 bamboo Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000005413 snowmelt Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01W—METEOROLOGY
- G01W1/00—Meteorology
- G01W1/14—Rainfall or precipitation gauges
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/10—Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation
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- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
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- Biodiversity & Conservation Biology (AREA)
- Ecology (AREA)
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- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The invention belongs to the technical field of precipitation measurement, and discloses a novel weighing type rain gauge and a measuring method. The invention detects the weight of the miniature rain gauge and sends the change value of the weight as the precipitation. Whether solid precipitation exists or not is judged by detecting whether the weight of the drained water is close to the weight of the empty barrel or not, if solid precipitation exists, the miniature rain gauge barrel is heated to melt and the solid precipitation is discharged, and the change of the weight is recorded as the solid precipitation.
Description
Technical Field
The invention belongs to the technical field of rainfall measurement, and particularly relates to a novel weighing type rain gauge and a measuring method.
Background
The rain gauge is used as an important means for rainfall detection, and the accuracy of the rain gauge directly influences the reliability of acquired data, so that the accuracy of the rain gauge is important for developing weather forecast, preventing weather disasters, guiding agricultural activities and the like.
At present, instruments for detecting rainfall at home and abroad are developed from traditional manual observation rain gauges, tipping bucket rain gauges and siphon rain gauges to various rainfall detectors such as optical rain gauges and weighing rain gauges. The traditional manual rainfall observation device needs manual regular observation and cannot meet the requirement of automation; the precision of the tipping bucket type rain gauge is poor when strong rainfall occurs; the siphon rain gauge has lower measurement precision; the optical rain gauges have large errors caused by raindrop overlapping falling and signal interference, are too expensive to be laid in a large area, and generally cannot detect solid precipitation due to structural limitation.
Although traditional weighing type rain gauge can detect solid-state precipitation and liquid precipitation simultaneously, the precision is higher, nevertheless can't distinguish solid-state precipitation and liquid precipitation to can't provide energy snow melt and can't automatic drainage under the environment that field temperature is low.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a novel weighing type rain gauge and a measuring method, which solve the problems mentioned in the background technology
The purpose of the invention can be realized by the following technical scheme:
the utility model provides a novel weighing type rain gauge, includes the urceolus, the fixed antenna that is provided with of lateral surface of urceolus, the fixed support and the solar panel that are provided with of lower extreme lateral surface of urceolus, the inboard fixed funnel that is provided with in urceolus upper end, the fixed first motorised valve that is provided with of lower extreme of funnel, the lower extreme of first motorised valve is provided with miniature rain gauge cylinder, first motorised valve with leave the clearance between the miniature rain gauge cylinder, the fixed outlet that is provided with of lower extreme of miniature rain gauge cylinder, the lower extreme of miniature rain gauge cylinder with the fixed second motorised valve that is provided with between the outlet, the lower extreme of miniature rain gauge cylinder is fixed to be set up on weighing sensor, simultaneously, the lower extreme of miniature rain gauge cylinder still is provided with circuit box and battery.
Furthermore, the miniature rain gauge cylinder is designed into a two-layer structure, the outer layer is a heat insulation layer, and the inner layer is a water storage cylinder.
Furthermore, one side of the miniature rain gauge, which is close to the bottom, is designed to be an inclined plane.
Furthermore, an electric heating pipe and a temperature sensor are arranged around the miniature rain gauge.
Furthermore, the first electric valve and the second electric valve are composed of a motor and a butterfly valve, and a soft silica gel sealing ring is arranged at the edge of the butterfly valve plate.
Further, the butterfly valve plate of the first electric valve is of a double-layer structure, heating resistance wires are uniformly arranged inside the butterfly valve plate, and electric heating pipes are arranged around the butterfly valve plate of the second electric valve.
Furthermore, the measurement control circuit in the circuit box comprises a microprocessor, a driving circuit and an A/D conversion circuit, the weighing sensor is electrically connected with the microprocessor through the A/D conversion circuit, the temperature sensor microprocessor is electrically connected, and the microprocessor is electrically connected with the first electric valve and the second electric valve through the driving circuit.
Furthermore, the inner wall of the funnel is coated with a hydrophobic material, and the surface of the funnel is smooth after fluorination treatment.
A measuring method of a novel weighing type rain gauge comprises the following steps;
zero calibration: acquiring the initial weight of the miniature rain measuring cylinder by using a weighing sensor, and removing the tare weight to zero the weighing sensor;
measurement: during actual measurement, the second electric valve is closed, then the first electric valve is opened, precipitation collected by the funnel enters the miniature rain measuring cylinder, and the weight W and the temperature T of the miniature rain measuring cylinder are collected by the weighing sensor and the temperature sensor; weight W was read 6 times in succession i Reading the value W by the microprocessor i Filtering, and accumulating the data to Sum by the microprocessor every time the microprocessor reads the real-time data j In and finding Max j ，Min j Finally, the detection value W is obtained by the following formula j ；
Every minute, calculate W j And (4) converting the increment value into a precipitation quantity value according to a precipitation conversion formula, storing the measured data, transmitting the data to an upper computer through a wireless sensor network, and circularly executing the step. If the weight W is increased j If the weight exceeds 100g, the next step is carried out;
draining: after the first electric valve is closed, the second electric valve is opened again, when W is j When the water volume is reduced to 0g, the drainage of the miniature rain gauge is finished, the second electric valve is closed, then the first electric valve is opened, and the previous step is returned;
if the weight W of the drained water is over a period of time j Still significantly greater than 0, indicating solid precipitation. Closing the second electric valve, and then opening the first electric valve;
and (3) detection: detecting the current temperature T, if the temperature T>If the temperature is 5 ℃, the melting and heating treatment is not carried out, and the operation is continuously executed by returning to the second step; if temperature T<Heating and melting solid precipitation for the miniature rain gauge by using the solar panel and the storage battery to supply power at 5 ℃, closing the first electric valve after melting for a certain time, then opening the second electric valve to drain water, and recording W j (ii) a If W j Without obvious change, indicating that the precipitation is probably debris rather than solid precipitation, uploading precipitation equivalent to debris to warn cleaning, and juxtaposing W j =0 as tare; such as W j And if the change is obvious, the change of the reading is converted into precipitation, the precipitation is marked as a solid precipitation accumulated value and then output, and the second step is returned to continue the circular operation.
Further, the conversion method of the precipitation weight and the precipitation amount is as follows:
wherein P is j For precipitation, W j Is the quality of rainwaterThe quantity r is the radius of the upper edge of the funnel, namely the water bearing device, rho T Is the density of water at temperature T. Take r =10cm, ρ T K ≈ 0.000318 when =1g/cm 3.
The invention has the beneficial effects that:
1. the invention detects the weight of the miniature rain gauge and sends the change value of the weight as the precipitation. Whether solid precipitation exists or not can be judged by detecting whether the weight of the drained water is close to that of the empty cylinder or not, if solid precipitation exists, the miniature rain gauge cylinder is heated to melt and discharge the solid precipitation, and the change of the weight is recorded as the solid precipitation.
2. The invention accurately measures the precipitation weight through the small-range weighing sensor, effectively identifies the precipitation form, melts solid precipitation according to the requirement, and has the characteristics of small volume, low energy consumption and the like.
Drawings
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
Fig. 1 is an internal structure view of a novel weighing type rain gauge according to an embodiment of the invention;
fig. 2 is an external structural view of the novel weighing type rain gauge according to the embodiment of the invention;
FIG. 3 is a cross-sectional view of a miniature rain gauge according to an embodiment of the present invention;
fig. 4 is a flowchart of the operation of the novel weighing type rain gauge according to the embodiment of the invention.
In the figure: 1. a funnel; 2. an outer cylinder; 3. an antenna; 4. a support; 5. a solar panel; 6. a first electrically operated valve; 7, a miniature rain gauge; 8. a weighing sensor; 9. a circuit box; 10. a second electrically operated valve; 11. a storage battery; 12. a water storage cylinder; 13. a thermal insulation layer; 14. a temperature sensor; 15. an electric heating ring; 16. and a water outlet.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "opening," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like are used in an orientation or positional relationship that is merely for convenience in describing and simplifying the description, and do not indicate or imply that the referenced component or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present invention.
As shown in fig. 1 to 3, in an embodiment of the invention, a novel weighing type rain gauge comprises an outer barrel 2, an antenna 3 is fixedly arranged on the outer side surface of the outer barrel 2, a bracket 4 and a solar panel 5 are fixedly arranged on the outer side surface of the lower end of the outer barrel 2, a funnel 1 is fixedly arranged on the inner side of the upper end of the outer barrel 2, a first electric valve 6 is fixedly arranged at the lower end of the funnel 1, a micro rain gauge 7 is arranged at the lower end of the first electric valve 6, a gap is reserved between the first electric valve 6 and the micro rain gauge 7, a water outlet 16 is fixedly arranged at the lower end of the micro rain gauge 7, a second electric valve 10 is fixedly arranged between the lower end of the micro rain gauge 7 and the water outlet 16, the lower end of the micro rain gauge 7 is fixedly arranged on a weighing sensor 8, and a circuit box 9 and a storage battery 11 are further arranged at the lower end of the micro rain gauge 7. The measurement control circuit in the circuit box 9 utilizes the weighing sensor 8 and the temperature sensor 10 to respectively carry out precipitation weighing and temperature detection, and controls the first electric valve 6 and the second electric valve 10. Funnel 1 is with the precipitation of collecting through the control of first motorised valve 6, flow in miniature rain gauge 7 in, weighing sensor 8 weighs and a section of thick bamboo interior rainwater total weight to miniature rain gauge 7 initial weight, through the weight of regularly detecting miniature rain gauge 7, and the change value of sending weight is as the precipitation volume, can distinguish whether there is solid-state precipitation through the weight that detects the weight after the drainage and can be close to empty section of thick bamboo, if there is solid-state precipitation then heat miniature rain gauge 7 in order to melt and discharge solid-state precipitation, and record the weight change as solid-state precipitation.
The miniature rain gauge 7 is a two-layer structure design, the outer layer is a heat insulation layer 13, the inner layer is a water storage cylinder 12, the water storage cylinder 12 is used for storing precipitation from the funnel 1, and the heat insulation layer 13 is used for preventing heat loss.
One side of the miniature rain gauge 7 close to the bottom is of an inclined plane structure, so that solid and liquid rainfall can conveniently slide down.
An electric heating pipe 15 and a temperature sensor 14 are arranged around the micro rain gauge 7, and the electric heating pipe 15 and the temperature sensor 14 are used for detecting the internal temperature and controlling the temperature of the micro rain gauge 7.
The first electric valve 6 and the second electric valve 10 are composed of an electric motor and a butterfly valve, and a soft silica gel sealing ring is arranged on the edge of the butterfly valve plate to ensure the sealing performance of the valve. The butterfly valve plate of the first electric valve 6 adopts a double-layer structure, and heating resistance wires are uniformly arranged inside the butterfly valve plate, so that ice and snow are prevented from being accumulated to block the funnel opening. An electric heating pipe is arranged around the butterfly valve plate of the second electric valve 10 for heating.
The measurement control circuit in the circuit box 9 comprises a microprocessor, a drive circuit and an A/D conversion circuit. Microprocessor adopts the STM32 treater, weighing sensor 8 adopts the beam type weighing sensor that the range is 1kg, be used for detecting miniature rain gauge change weight, through AD converting circuit and microprocessor electric connection, ADS1232 chip is selected for use to AD converting circuit's analog-to-digital conversion chip, this chip has the low power dissipation, the integrated level is high, advantages such as low noise, steady voltage chip AMS1117-5.0 forms 2.5V's reference voltage through the 5V power supply, and provide the benchmark for ADS1232 chip, improve its reliability and stability of work. The temperature sensor 14 is directly connected with the microprocessor and is used for detecting the temperature of the rainfall stored in the miniature rain gauge 7; the microprocessor is connected with the first electric valve 6 and the second electric valve 10 through a driving circuit and is used for controlling the opening and closing of the first electric valve 6 and the second electric valve 10.
The inner wall of the funnel 1 is coated with a hydrophobic material, the surface of the funnel is smooth after fluorination treatment, and the funnel is not easy to be stained with water and snow.
The temperature sensor 14 is a DS18B20 temperature sensor and is fixed at the bottom of the miniature rain gauge 7 and used for detecting the temperature in the miniature rain gauge.
The constant-temperature heating module collects real-time temperature in the miniature rain gauge 7 through the temperature sensor 14, feeds back real-time temperature signals through the temperature detection circuit, compares the real-time temperature signals with a set value to determine a deviation value, and outputs the deviation value through PID algorithm operation to control the electric heating pipe 15 to adjust the temperature in the miniature rain gauge 7.
The rain gauge can be powered by commercial power or solar energy, and comprises a solar panel 5 and a storage battery 11. The storage battery 11 is responsible for the power supply of the whole rain gauge, and the solar panel 5 is responsible for charging the storage battery to ensure the stable continuity of the output power supply of the storage battery 11.
A measuring method of a novel weighing type rain gauge comprises the following steps:
as shown in fig. 4, fig. 4 is a flowchart illustrating a work flow of the novel weighing type rain gauge according to the present invention. When the novel weighing type rain gauge works,
and (3) zero calibration: the initial weight of the miniature rain measuring cylinder 7 is collected by the weighing sensor 8, and the tare weight is removed to zero the weighing sensor 8.
Measurement: during actual measurement, the second electric valve 10 is closed, then the first electric valve 6 is opened, precipitation collected by the funnel 1 enters the micro rain measuring cylinder 7, and the weight W and the temperature T of the micro rain measuring cylinder 7 are collected by the weighing sensor 8 and the temperature sensor 14. Weight W was read 6 times in succession i Reading the value W by the microprocessor i Filtering, and accumulating the data to Sum by the microprocessor every time the microprocessor reads the real-time data j In and find Max j ，Min j Finally, the detection value W is obtained by the following formula j 。
Every minute, calculate W j And (4) converting the increment value into a precipitation value according to a precipitation conversion formula, storing the measured data, transmitting the data to an upper computer through a wireless sensor network, and circularly executing the step. If increased, theWeight W j And exceeding 100g, and entering the next step.
Draining: after the first electric valve 6 is closed, the second electric valve 10 is opened again, when W is j Decreasing to 0g, indicating that the micro rain gauge 7 is drained, closes the second electric valve 10, and then opens the first electric valve 6 again, returning to the previous step.
If the weight W of the drained water is over a period of time j Still significantly greater than 0, indicating solid precipitation. The second electro valve 10 is closed and then the first electro valve 6 is opened again.
And (3) detection: detecting the current temperature T, if the temperature T>If the temperature is 5 ℃, the melting and hot melting treatment is not carried out, and the operation is continuously executed after returning to the second step; if the temperature T is<At the temperature of 5 ℃, the solar panel 5 and the storage battery 11 are used for supplying power to the miniature rain gauge 7 to heat and melt solid rainfall, after the rainfall melts for a certain time, the first electric valve 6 is closed, the second electric valve 10 is opened to drain water, and W is recorded j . If W j Without significant change, indicating that it is probably debris, not solid precipitation, uploading precipitation equivalent to debris to warn of cleaning, juxtaposing W j =0 as tare weight. Such as W j And if the change is obvious, the change of the reading is converted into precipitation, the precipitation is marked as a solid precipitation accumulated value and then output, and the second step is returned to continue the circular operation.
The conversion method of the precipitation weight and the precipitation amount comprises the following steps:
wherein P is j For precipitation, W j For the quality of the rainwater, r is the radius of the upper edge of the funnel, i.e. the water bearing device, rho T Is the density of water at temperature T. Take r =10cm, ρ T K ≈ 0.000318 when =1g/cm 3.
In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, and such changes and modifications are within the scope of the invention as claimed.
Claims (10)
1. The utility model provides a novel weighing type rain gauge, includes urceolus (2), its characterized in that, the fixed antenna (3) that is provided with of lateral surface of urceolus (2), the fixed support (4) and solar panel (5) of being provided with of lower extreme lateral surface of urceolus (2), urceolus (2) upper end inboard is fixed and is provided with funnel (1), the fixed first motorised valve (6) that is provided with of lower extreme of funnel (1), the lower extreme of first motorised valve (6) is provided with miniature rain gauge (7), first motorised valve (6) with leave the clearance between miniature rain gauge (7), the fixed outlet (16) that is provided with of lower extreme of miniature rain gauge (7), the lower extreme of miniature rain gauge (7) with fixed second motorised valve (10) that is provided with between outlet (16), the lower extreme of miniature rain gauge (7) is fixed to be set up on weighing sensor (8), and simultaneously, the lower extreme of miniature rain gauge (7) still is provided with circuit box (9) and battery (11).
2. A novel weighing type rain gauge according to claim 1, characterized in that the miniature rain gauge (7) is of a two-layer structure design, the outer layer is a heat insulation layer (13), and the inner layer is a water storage tank (12).
3. The novel weighing type rain gauge according to claim 1, wherein one side of the miniature rain gauge (7) near the bottom is designed to be inclined.
4. A novel weighing type rain gauge according to claim 1, characterized in that an electric heating pipe (15) and a temperature sensor (14) are arranged around the miniature rain gauge (7).
5. A new weighing rain gauge according to claim 1, characterized in that the first electric valve (6) and the second electric valve (10) are constituted by an electric motor and a butterfly valve, the edge of which is provided with a soft silicone sealing ring.
6. The novel weighing type rain gauge as claimed in claim 1, wherein the butterfly valve plate of the first electric valve (6) is of a double-layer structure, heating resistance wires are uniformly arranged inside the butterfly valve plate, and electric heating pipes are arranged around the butterfly valve plate of the second electric valve (10).
7. The novel weighing type rain gauge according to claim 4, wherein the measurement control circuit in the circuit box (9) comprises a microprocessor, a driving circuit and an A/D conversion circuit, the weighing sensor (8) is electrically connected with the microprocessor through the A/D conversion circuit, the temperature sensor (14) is electrically connected with the microprocessor, and the microprocessor is electrically connected with the first electric valve (6) and the second electric valve (10) through the driving circuit.
8. A new weighing type rain gauge according to claim 1, characterized in that the inner wall of the funnel (1) is coated with hydrophobic material and the surface is smooth by fluorination.
9. A measuring method of a novel weighing type rain gauge is characterized by comprising the following steps;
zero calibration: acquiring the initial weight of the miniature rain measuring cylinder (7) by using a weighing sensor (8), and removing the tare weight to zero the weighing sensor (8);
measurement: during actual measurement, the second electric valve (10) is closed, then the first electric valve (6) is opened, and precipitation collected by the funnel (1) enters the micro rain gauge (7)The weight W and the temperature T of the miniature rain gauge (7) are collected by a weighing sensor (8) and a temperature sensor (14); weight W was read 6 times in succession i Reading the value W by the microprocessor i Filtering, and accumulating the data to Sum by the microprocessor every time the microprocessor reads the real-time data j In and finding Max j ，Min j Finally, the detection value W is obtained by the following formula j ；
Every minute, calculate W j Converting the increment value into precipitation quantity value according to precipitation quantity conversion formula, storing the measured data, transmitting the data to an upper computer through a wireless sensor network, and executing the step circularly if the weight W is increased j If the weight exceeds 100g, entering the next step;
draining: after the first electric valve (6) is closed, the second electric valve (10) is opened again, when W is j When the water is reduced to 0g, the micro rain gauge (7) finishes draining, the second electric valve (10) is closed, then the first electric valve (6) is opened again, and the previous step is returned;
if the weight W of the drained water is over a period of time j Still significantly greater than 0, indicating the presence of solid precipitation, closing the second electric valve (10) and then opening the first electric valve (6);
and (3) detection: detecting the current temperature T, if the temperature T is more than 5 ℃, not performing melting and heating melting treatment, and returning to the second step to continue to execute the operation; if the temperature T is<At the temperature of 5 ℃, the solar panel (5) and the storage battery (11) are used for supplying power to heat and melt the solid rainfall for the miniature rain gauge (7), after the rainfall melts for a certain time, the first electric valve (6) is closed, the second electric valve (10) is opened for draining water, and W is recorded j (ii) a If W j Without significant change, indicating that it is probably debris, not solid precipitation, uploading precipitation equivalent to debris to warn of cleaning, juxtaposing W j =0 as tare; such as W i If the change is obvious, the change of the reading is converted into precipitation, the precipitation is marked as an integrated value of solid precipitation and then output, and the step II is returnedThe two steps continue the cycle operation.
10. The measuring method of the novel weighing type rain gauge according to claim 9, wherein the conversion method of the precipitation weight and the precipitation amount is as follows:
wherein P is j For precipitation, W j For the quality of the rainwater, r is the radius of the upper edge of the funnel, i.e. the water bearing device, rho T Is the density of water at temperature T. Take r =10cm, ρ T K ≈ 0.000318 when =1g/cm 3.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116679354A (en) * | 2023-08-03 | 2023-09-01 | 山东新阳光环保设备股份有限公司 | Automatic monitoring device for meteorological detection environment protection |
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Application publication date: 20221014 |