CN211263826U - Drop type rainfall sensor - Google Patents
Drop type rainfall sensor Download PDFInfo
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- CN211263826U CN211263826U CN201921551957.XU CN201921551957U CN211263826U CN 211263826 U CN211263826 U CN 211263826U CN 201921551957 U CN201921551957 U CN 201921551957U CN 211263826 U CN211263826 U CN 211263826U
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Abstract
The utility model belongs to the technical field of the rainfall measurement, especially, relate to a drip formula rainfall sensor. The carrier of the drip type rainfall sensor is vertically arranged in a through manner, the funnel is arranged at the top in the carrier, a plurality of water outlet holes are formed in the bottom of the funnel, a plurality of needle tubes are arranged, the needle tubes and the water outlet holes are arranged in a one-to-one correspondence manner, the needle tubes are vertically and fixedly arranged at the lower sides of the corresponding water outlet holes, the needle tubes are communicated with the corresponding water outlet holes, the supporting thin plates are fixedly arranged in the carrier, the supporting thin plates are positioned below the plurality of needle tubes, and water outlets capable of discharging rainwater falling onto the supporting thin plates are formed in the peripheral surface of the carrier; the closed plate is fixedly arranged at the lower part in the carrier, the closed plate, the supporting thin plate and the carrier form an acoustic cavity, a pickup and a measuring module are arranged in the acoustic cavity, and the measuring module is connected with the pickup. The utility model discloses can be fit for the rainfall observation work of different rainfall, have fine practicality.
Description
Technical Field
The utility model belongs to the technical field of the rainfall measurement, especially, relate to a drip formula rainfall sensor.
Background
The rainfall sensor is a main device for observing rainfall and can measure the rainfall and the rainfall intensity in unit time. At present, the instrument and equipment for automatic rainfall measurement mainly adopt tipping bucket type, siphon type and weighing type rainfall sensors from the aspect of measurement modes.
The tipping bucket type rainfall sensor and the siphon type rainfall sensor have the defects that the rainfall belongs to intermittent measurement, the turnover or siphon can be completed only when a certain amount of rainfall is reached, and the tipping bucket type rainfall sensor and the siphon type rainfall sensor are not suitable for rainfall observation work with small rainfall, and the weighing type rainfall sensor is not suitable for production and manufacturing due to the fact that the weighing type rainfall sensor is complex in structure, comprises devices for collecting water, weighing, draining water and the like.
Therefore, improvements in the prior art are needed.
SUMMERY OF THE UTILITY MODEL
To the problem that above-mentioned prior art exists, the utility model provides a drip formula rainfall sensor.
The utility model discloses a following technical scheme realizes above-mentioned purpose:
the utility model discloses a drip formula rain sensor, drip formula rain sensor includes:
the carrier is vertically arranged in a through manner;
the funnel is arranged at the top in the carrier, and a plurality of water outlet holes are formed in the bottom of the funnel;
the needle tubes are arranged in a plurality of the needle tubes, the needle tubes and the water outlet holes are arranged in a one-to-one correspondence manner, the needle tubes are vertically and fixedly arranged on the lower sides of the corresponding water outlet holes, and the needle tubes are communicated with the corresponding water outlet holes;
the supporting thin plate is fixedly arranged in the carrier and positioned below the needle tubes, and a water outlet capable of discharging rainwater falling onto the supporting thin plate is formed in the peripheral surface of the carrier;
the closing plate, the closing plate is fixed to be set up lower part in the carrier, the closing plate support the sheet metal and the carrier constitutes a sound chamber, be provided with adapter and measuring module in the sound chamber, measuring module with the adapter is connected.
The utility model provides a drip-type rainfall sensor, because the carrier is arranged along vertical through, the funnel is arranged at the top in the carrier, and the bottom of the funnel is provided with a plurality of water outlets, thus rainwater can be discharged through the plurality of water outlets at the bottom of the funnel; the needle tubes and the water outlet holes are arranged in a one-to-one correspondence manner, the needle tubes are fixedly arranged on the lower sides of the corresponding water outlet holes in the vertical direction, and the needle tubes are communicated with the corresponding water outlet holes, so that rainwater discharged from the water outlet holes can enter the needle holes and is discharged from the lower ends of the needle holes in a raindrop manner; the supporting thin plate is fixedly arranged in the carrier and is positioned below the needle tubes, so that raindrops discharged from the lower end of the needle holes fall onto the supporting thin plate to generate sound waves; because the fixed lower part that sets up in the carrier of closing plate, support sheet metal and carrier constitute a sound chamber, be provided with adapter and measuring module in the sound chamber, measuring module and adapter are connected, the adapter just can collect the sound wave quantity that the raindrop falls into on the support sheet metal like this, and count through measuring module, can calculate the rainfall according to the quantity and the volume of raindrop, compare like the rainfall sensor shown in the background art, its simple structure, and do not belong to the intermittent type formula and measure, can be fit for the rainfall observation work of different rainfall, have fine practicality.
Further, the funnel includes:
the needle tube type funnel comprises a first funnel, a second funnel and a third funnel, wherein the first funnel is in a round table shape with a thick upper part and a thin lower part, a plurality of needle tubes are arranged at the bottom of the first funnel, and the plurality of needle tubes at the bottom of the first funnel are arranged around a central shaft of the first funnel at equal angular intervals;
the second funnel is columnar, is coaxially and fixedly arranged at the bottom of the first funnel, is arranged among the needle tubes at the bottom of the first funnel, is provided with a plurality of needle tubes at the bottom of the second funnel, and is arranged around the central shaft of the second funnel at equal angular intervals;
the third funnel, the third funnel is the column, the coaxial fixed setting of third funnel is in the bottom of second funnel, the third funnel sets up a plurality of the bottom of second funnel between the needle tubing, the middle part of the bottom of third funnel is provided with a needle tubing.
Further, the top of first funnel is provided with first filter screen, be provided with the second filter screen in the first funnel, the filtration diameter of second filter screen is less than the filtration diameter of first filter screen, the second filter screen be with the coaxial taper of first funnel, the fixed setting in top of second filter screen is in the top of first funnel.
Preferably, the needle cannula has a diameter of 3 mm.
Furthermore, the lower edge of the water outlet is flush with the upper edge of the support thin plate, a water outlet pipe is arranged in the water outlet, and the water outlet pipe is located on the outer side of the carrier.
Furthermore, a sponge is arranged on the support thin plate, and the sponge is arranged at the inlet of the water outlet.
Furthermore, an annular bracket is fixedly arranged in the carrier, and the supporting thin plate is fixedly arranged on the annular bracket.
The utility model discloses a another kind of drip formula rain sensor, drip formula rain sensor includes:
the carrier is vertically arranged in a through manner;
the funnel is arranged at the top in the carrier, and a plurality of water outlet holes are formed in the bottom of the funnel;
the needle tubes are arranged in a plurality of the needle tubes, the needle tubes and the water outlet holes are arranged in a one-to-one correspondence manner, the needle tubes are vertically and fixedly arranged on the lower sides of the corresponding water outlet holes, and the needle tubes are communicated with the corresponding water outlet holes;
photoelectric pair tubes, wherein the photoelectric pair tubes and the needle tubes are arranged in a one-to-one correspondence manner, and each photoelectric pair tube is fixedly arranged right below the corresponding needle tube;
and the measuring module is connected with the photoelectric pair tube.
The other drip type rainfall sensor of the utility model has the advantages that the carrier is arranged in a vertical through manner, the funnel is arranged at the top in the carrier, and the bottom of the funnel is provided with a plurality of water outlets, so that rainwater can be discharged through the plurality of water outlets at the bottom of the funnel; the needle tubes and the water outlet holes are arranged in a one-to-one correspondence manner, the needle tubes are fixedly arranged on the lower sides of the corresponding water outlet holes in the vertical direction, and the needle tubes are communicated with the corresponding water outlet holes, so that rainwater discharged from the water outlet holes can enter the needle holes and is discharged from the lower ends of the needle holes in a raindrop manner; because photoelectric geminate transistors and needle tubing one-to-one set up, every photoelectric geminate transistor is fixed to be set up under the needle tubing that corresponds, discharge from the needle tubing when the raindrop, and when passing the transmitting tube and the receiver tube of the photoelectric geminate transistor that correspond, the photoelectric geminate transistor produces break-make, measuring module is to the break-make count, can calculate the rainfall according to the quantity and the volume of raindrop, compare like the rainfall sensor shown in the background art, its simple structure, and do not belong to the intermittent type formula and measure, can be fit for the rainfall observation work of different rainfall, have fine practicality.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural view of a drip type rainfall sensor according to a first embodiment of the present invention;
FIG. 2 is a schematic diagram of the structure of the funnel of FIG. 1;
fig. 3 is a diagram of a drip type rainfall sensor according to a second embodiment of the present invention;
fig. 4 is a schematic layout of the photoelectric pair tube of fig. 3.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The first embodiment is as follows:
fig. 1 is a view of the first embodiment of the present invention, which is combined with fig. 1, the drip type rainfall sensor includes a carrier 1, a funnel 2, needle tubes 3, support thin plates 4, a sealing plate 5, a pickup 6 and a measuring module 7, wherein the carrier 1 is vertically through-disposed, the funnel 2 is disposed at the top of the carrier 1, the bottom of the funnel 2 is provided with a plurality of water outlets, the needle tubes 3 are disposed in a one-to-one correspondence with the water outlets, the needle tubes 3 are vertically fixed at the lower sides of the corresponding water outlets, the needle tubes 3 are communicated with the corresponding water outlets, the support thin plates 4 are fixedly disposed in the carrier 1, the support thin plates 4 are located below the plurality of needle tubes 3, the circumferential surface of the carrier 1 is provided with water outlets 8 capable of discharging rainwater falling onto the support thin plates 4, the sealing plate 5 is fixedly disposed at the lower portion of the carrier 1, the sealing plate 5, The support sheet 4 and the carrier 1 form an acoustic cavity, in which a sound pick-up 6 and a measuring module 7 are arranged, the measuring module 7 being connected to the sound pick-up 6.
According to the drip type rainfall sensor provided by the embodiment, the carrier is vertically arranged in a through manner, the funnel is arranged at the top in the carrier, and the bottom of the funnel is provided with the plurality of water outlet holes, so that rainwater can be discharged through the plurality of water outlet holes at the bottom of the funnel; the needle tubes and the water outlet holes are arranged in a one-to-one correspondence manner, the needle tubes are fixedly arranged on the lower sides of the corresponding water outlet holes in the vertical direction, and the needle tubes are communicated with the corresponding water outlet holes, so that rainwater discharged from the water outlet holes can enter the needle holes and is discharged from the lower ends of the needle holes in a raindrop manner; the supporting thin plate is fixedly arranged in the carrier and is positioned below the needle tubes, so that raindrops discharged from the lower end of the needle holes fall onto the supporting thin plate to generate sound waves; because the fixed lower part that sets up in the carrier of closing plate, support sheet metal and carrier constitute a sound chamber, be provided with adapter and measuring module in the sound chamber, measuring module and adapter are connected, the adapter just can collect the sound wave quantity that the raindrop falls into on the support sheet metal like this, and count through measuring module, can calculate the rainfall according to the quantity and the volume of raindrop, compare like the rainfall sensor shown in the background art, its simple structure, and do not belong to the intermittent type formula and measure, can be fit for the rainfall observation work of different rainfall, have fine practicality.
With reference to fig. 1, the carrier 1 of the embodiment of the present invention may be a tube shape that is through from top to bottom, and certainly, it may also be a square shape, etc., and the embodiment of the present invention does not limit this.
Fig. 2 is a schematic structural view of the funnel in fig. 1, and referring to fig. 1 and fig. 2, the funnel 2 in the embodiment of the present invention includes a first funnel 2.1, a second funnel 2.2 and a third funnel 2.3, wherein the first funnel 2.1 is in a shape of a truncated cone with a thick top and a thin bottom, the bottom of the first funnel 2.1 is provided with a plurality of needle tubes, the plurality of needle tubes at the bottom of the first funnel 2.1 are arranged around a central axis of the first funnel 2.1 at equal angular intervals, the second funnel 2.2 is in a shape of a column, the second funnel 2.2 is coaxially and fixedly arranged at the bottom of the first funnel 2.1, the second funnel 2.2 is arranged between the plurality of needle tubes 3 at the bottom of the first funnel 2.1, the bottom of the second funnel 2.2 is also provided with a plurality of needle tubes 3, the plurality of needle tubes 3 at the bottom of the second funnel 2.2 are arranged around a central axis of the second funnel 2.2 at equal angular intervals, the third funnel 2.3 is in a shape of a column, and the third funnel 2.3 is coaxially and fixedly arranged, the third funnel 2.3 is arranged between a plurality of needle tubes 3 at the bottom of the second funnel 2.2, and one needle tube 3 is arranged in the middle of the bottom of the third funnel 2.3. Namely the utility model discloses the funnel is the echelonment and arranges, can adapt to the not test of the rainfall of equidimension, specifically is:
1. when the rainfall is small, the collected rainwater is collected in the third funnel 2.3 when the water level of the collected rainwater is lower than the top surface of the third funnel 2.3, and the rainwater is discharged through the needle tube 3 at the bottom of the third funnel 2.3 to form 1 group of raindrops;
2. when the level of the collected rainwater is lower than the top surface of the second funnel 2.2, the rainwater is collected in the second funnel 2.2 and the third funnel 2.3 and is discharged through the needle tube 3 at the bottom of the second funnel 2.2 and the needle tube 3 at the bottom of the third funnel 2.3 to form a plurality of groups of raindrops;
3. when the level of the collected rainwater is lower than the top surface of the first funnel 2.1, the rainwater is collected in the first funnel 2.1, the second funnel 2.2 and the third funnel 2.3 and is discharged through the needle tube at the bottom of the first funnel 2.1, the needle tube 3 at the bottom of the second funnel 2.2 and the needle tube 3 at the bottom of the third funnel 2.3, so that more groups of raindrops are formed.
It should be noted that the funnel of the embodiment of the present invention has three steps, and of course, may be appropriately deformed to form more steps, and the embodiment of the present invention does not limit this.
Further, in the embodiment of the present invention, the top of the first funnel 2.1 is provided with the first filter screen 9, the second filter screen 10 is provided in the first funnel 2.1, the filter diameter of the second filter screen 10 is smaller than the filter diameter of the first filter screen 9, the second filter screen 10 is a cone coaxial with the first funnel 2.1, and the top of the second filter screen 10 is fixedly provided at the top of the first funnel 2.1, so that the rainwater can be doubly filtered, and the external impurities are prevented from entering the carrier 1, which affects the normal formation of raindrops.
For the embodiment of the present invention, the first screen 9 can be a 10-mesh stainless steel net, and the first screen 10 can be a 50-mesh stainless steel net.
Further, the diameter of the needle tube of the embodiment of the present invention is 3mm, and the maximum water drop diameter can be formed to be 5mm, and the water drop is formed to the diameter 5mm and then falls freely onto the support thin plate 4, and the carrier 1 is discharged from the water outlet 8.
Referring to fig. 1, in the embodiment of the present invention, the lower edge of the water outlet 8 and the upper edge of the supporting thin plate 4 are flush with each other, a water outlet pipe 11 is disposed in the water outlet 8, the water outlet pipe 11 is located outside the carrier 1, i.e., the raindrops can be discharged from the carrier 1 through the water outlet pipe 11.
Further, combine fig. 1, in the embodiment of the present invention, the supporting sheet 4 can be provided with the sponge 12 thereon, and the sponge 12 is disposed at the entrance of the water outlet 8, so that under the condition that the raindrop discharging carrier 1 is not hindered, the external sundries (such as moth, etc.) can be prevented from entering the carrier 1 through the water outlet 8, and the normal operation of measurement is influenced.
With reference to fig. 1, in the embodiment of the present invention, a ring-shaped support 13 is fixedly disposed in the carrier 1, and the supporting thin plate 4 is fixedly disposed on the ring-shaped support 13, that is, the ring-shaped support 13 can be fixed inside the carrier 1, and the supporting thin plate 4 is placed on the ring-shaped support 13.
The utility model discloses support sheet 6 can be for the thick polyvinyl chloride film of thickness for 0.2mm, and the rainwater forms the bit at 3 syringe needles of needle tubing and strikes below support sheet 6 and produces the sound wave, and adapter 8 gathers support sheet sound wave signal, and the 9 cores of measuring module are c8051f340 singlechip, and measuring module 9 analysis sound wave signal counts the bit, calculates the rainfall according to the quantity and the volume of bit, specifically does:
if each water drop has a diameter of 5mm and drops freely when formed to a diameter of 5mm, the length of the needle tube 3 is adjusted so that the needle produces 2 water drops per second, and the maximum measured rainfall is 150mmh-1, which is calculated as follows:
each raindrop volume is 4/3 × 3.14 × 2.5mm × 65mm3；
Total raindrop volume of 65mm per hour3*2*10*3600＝4680000mm3h-1；
Converted into diameter of 200mm, depth of 4680000/3.14/100/100 of 150mmh-1。
The technical scheme provided by the implementation example has the following beneficial effects: utilize ladder funnel and needle tubing to convert the rainwater into the bit to detect the quantity of bit through the sound, realize rainfall digital continuous measurement, it is good to have the instantaneity, and the precision is high, simple structure's characteristics.
Example two:
the difference between the second embodiment and the first embodiment is that:
fig. 3 is a diagram of a drip type rainfall sensor according to the second embodiment of the present invention, with reference to fig. 3, with reference to the second embodiment, the pickup in the first embodiment is eliminated, and a plurality of photoelectric pair tubes 14 are provided, and fig. 4 is a schematic layout diagram of the photoelectric pair tubes of fig. 3, with reference to fig. 4, with reference to the first embodiment of the present invention, the photoelectric pair tubes 14 and the needle tubes 3 are arranged in a one-to-one correspondence, and each photoelectric pair tube 14 is fixedly disposed under the corresponding needle tube 3, and the measurement module 7 is connected to the photoelectric pair tube 14.
In the second embodiment, because photoelectric geminate transistors and needle tubes are arranged in a one-to-one correspondence manner, each photoelectric geminate transistor is fixedly arranged under the corresponding needle tube, when raindrops are discharged from the needle tubes and pass through the transmitting tubes and the receiving tubes of the corresponding photoelectric geminate transistors, the photoelectric geminate transistors are switched on and off once, the measuring module counts the on and off states, the rainfall can be calculated according to the quantity and the volume of the raindrops, and compared with a rainfall sensor shown in the background technology, the sensor is simple in structure and does not belong to intermittent measurement, the sensor can be suitable for rainfall observation work of different rainfall, and the sensor has good practicability.
The following embodiments are preferred embodiments of the present invention, which are only used to facilitate the description of the present invention, and are not intended to limit the present invention in any form, and any person who knows commonly in the art can use the present invention to make local changes or modifications within the scope of the technical features of the present invention, and the technical features of the present invention are not separated from the present invention.
Claims (8)
1. A drip type rain sensor, comprising:
the carrier is vertically arranged in a through manner;
the funnel is arranged at the top in the carrier, and a plurality of water outlet holes are formed in the bottom of the funnel;
the needle tubes are arranged in a plurality of the needle tubes, the needle tubes and the water outlet holes are arranged in a one-to-one correspondence manner, the needle tubes are vertically and fixedly arranged on the lower sides of the corresponding water outlet holes, and the needle tubes are communicated with the corresponding water outlet holes;
the supporting thin plate is fixedly arranged in the carrier and positioned below the needle tubes, and a water outlet capable of discharging rainwater falling onto the supporting thin plate is formed in the peripheral surface of the carrier;
the closing plate, the closing plate is fixed to be set up lower part in the carrier, the closing plate support the sheet metal and the carrier constitutes a sound chamber, be provided with adapter and measuring module in the sound chamber, measuring module with the adapter is connected.
2. The drip type rain sensor according to claim 1, wherein the funnel comprises:
the needle tube type funnel comprises a first funnel, a second funnel and a third funnel, wherein the first funnel is in a round table shape with a thick upper part and a thin lower part, a plurality of needle tubes are arranged at the bottom of the first funnel, and the plurality of needle tubes at the bottom of the first funnel are arranged around a central shaft of the first funnel at equal angular intervals;
the second funnel is columnar, is coaxially and fixedly arranged at the bottom of the first funnel, is arranged among the needle tubes at the bottom of the first funnel, is provided with a plurality of needle tubes at the bottom of the second funnel, and is arranged around the central shaft of the second funnel at equal angular intervals;
the third funnel, the third funnel is the column, the coaxial fixed setting of third funnel is in the bottom of second funnel, the third funnel sets up a plurality of the bottom of second funnel between the needle tubing, the middle part of the bottom of third funnel is provided with a needle tubing.
3. The drip rainfall sensor of claim 2 wherein the top of the first funnel is provided with a first screen, the first funnel is provided with a second screen, the second screen has a smaller diameter than the first screen, the second screen is in a cone shape coaxial with the first funnel, and the top of the second screen is fixedly disposed at the top of the first funnel.
4. A drip sensor according to any one of claims 1-3, wherein the needle tube has a diameter of 3 mm.
5. A drip sensor according to any one of claims 1 to 3, wherein the lower edge of the outlet is flush with the upper edge of the support sheet, and an outlet pipe is provided in the outlet and is located outside the carrier.
6. The drip type rainfall sensor of claim 5 wherein the support sheet has a sponge disposed thereon, the sponge being disposed at an inlet of the water outlet.
7. The drip type rain sensor according to any one of claims 1 to 3, wherein an annular holder is fixedly provided in the carrier, and the support sheet is fixedly provided on the annular holder.
8. A drip type rain sensor, comprising:
the carrier is vertically arranged in a through manner;
the funnel is arranged at the top in the carrier, and a plurality of water outlet holes are formed in the bottom of the funnel;
the needle tubes are arranged in a plurality of the needle tubes, the needle tubes and the water outlet holes are arranged in a one-to-one correspondence manner, the needle tubes are vertically and fixedly arranged on the lower sides of the corresponding water outlet holes, and the needle tubes are communicated with the corresponding water outlet holes;
photoelectric pair tubes, wherein the photoelectric pair tubes and the needle tubes are arranged in a one-to-one correspondence manner, and each photoelectric pair tube is fixedly arranged right below the corresponding needle tube;
and the measuring module is connected with the photoelectric pair tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921551957.XU CN211263826U (en) | 2019-09-18 | 2019-09-18 | Drop type rainfall sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921551957.XU CN211263826U (en) | 2019-09-18 | 2019-09-18 | Drop type rainfall sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211263826U true CN211263826U (en) | 2020-08-14 |
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ID=71957654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921551957.XU Expired - Fee Related CN211263826U (en) | 2019-09-18 | 2019-09-18 | Drop type rainfall sensor |
Country Status (1)
| Country | Link |
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| CN (1) | CN211263826U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110609338A (en) * | 2019-09-18 | 2019-12-24 | 江汉大学 | Drop type rainfall sensor |
| CN113885102A (en) * | 2021-09-29 | 2022-01-04 | 滨州学院 | Rainfall monitoring device, rainfall detection method, rainfall detection system and storage medium |
-
2019
- 2019-09-18 CN CN201921551957.XU patent/CN211263826U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110609338A (en) * | 2019-09-18 | 2019-12-24 | 江汉大学 | Drop type rainfall sensor |
| CN113885102A (en) * | 2021-09-29 | 2022-01-04 | 滨州学院 | Rainfall monitoring device, rainfall detection method, rainfall detection system and storage medium |
| CN113885102B (en) * | 2021-09-29 | 2024-01-19 | 滨州学院 | Precipitation monitoring device, precipitation detection method, system and storage medium |
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