Precipitation measuring device

Abstract

The utility model discloses a precipitation measuring device which comprises a support, an outer cylinder, a funnel, a measuring assembly and a water storage cylinder. The solar cell panel and the storage battery are symmetrically arranged on an L-shaped mounting base of the bracket; the outer cylinder is vertically inserted into the base; the inner wall of the outer cylinder is provided with an annular step fixing funnel and a measuring assembly; the measuring assembly is composed of a spoke type weighing sensor, a measuring cylinder, a drainage pipe penetrating through the sensor and an electric flat-bottom diaphragm valve, and vertical positioning of the measuring cylinder is achieved through a double-ring fixing piece. The top of the water storage cylinder is provided with a U-shaped siphon which is automatically emptied when the water level reaches the critical height. The control module is integrated with a LoRa wireless transmission unit, and triggers the diaphragm valve to drain water and upload data per hour. The device realizes + / -0.2 mm measurement precision through the combination of the weighing sensor and the flat-bottom diaphragm valve, the photovoltaic power supply system supports long-term outdoor work, the siphon structure prevents overflow, the device has anti-blocking and remote monitoring functions, and the device is suitable for weather stations, agricultural irrigation and other scenes.

Description

TECHNICAL FIELD

[0001] The utility model belongs to precipitation measurement technical field, concretely relates to a precipitation measurement device. BACKGROUND

[0002] The measurement of precipitation is of great significance for water environment evaluation, water resource management, river development and utilization, and water energy resource utilization. By monitoring rainfall, we can understand the precipitation conditions in different regions, and thus better plan and manage water resources, which is crucial for preventing flood disasters and ensuring public safety.

[0003] The existing precipitation measurement device is generally a rain gauge, but the rain gauge has the following defects:

[0004] 1. Measurement error caused by mechanical wear and tear;

[0005] 2. No automatic drainage and data remote transmission function;

[0006] 3. The power supply system relies on external power supply, and the installation position is limited to flat ground, and the installation position is limited. SUMMARY

[0007] In order to overcome the problems in the background art, the utility model provides a precipitation measurement device.

[0008] To achieve the above object, the utility model is realized by the following technical scheme:

[0009] A precipitation measurement device, comprising: a support, an outer cylinder, a hopper, a measurement assembly and a water storage cylinder;

[0010] The support comprises a mounting base and a support frame, the mounting base is an L-shaped disc structure, at least two support frames are welded at the side end of the mounting base, a solar cell panel and a storage battery are arranged on the support frame, and the outer cylinder is vertically inserted into the mounting base;

[0011] The outer cylinder is open at the top and has an annular step in the middle of the inner wall, the hopper is fixed by bolts at the top opening of the outer cylinder, and a filter screen is arranged at the water outlet of the hopper;

[0012] The measurement assembly comprises a measurement cylinder, a weighing sensor, a drain pipe and a diaphragm valve, the weighing sensor is fixedly arranged in the outer cylinder by a mounting bracket, the measurement cylinder is arranged on the weighing sensor and connected with the annular step by a fixing member, the drain pipe is vertically connected through the weighing sensor and the bottom of the measurement cylinder, and the diaphragm valve is arranged at the connection between the drain pipe and the bottom of the measurement cylinder;

[0013] The water storage cylinder is arranged at the bottom of the outer cylinder and directly below the drain pipe, and a U-shaped siphon pipe is arranged at the upper part of the side wall of the water storage cylinder, one end of the siphon pipe extends to the bottom of the water storage cylinder, and the other end extends to the outside through the outer cylinder.

[0014] Further, the fixing member comprises coaxially arranged inner ring, outer ring and connecting rod, the inner ring is sleeved on the outside of the measuring cylinder, and the outer ring is fixed on the annular step of the outer cylinder by bolts.

[0015] Further, the highest point of the siphon pipe is 40-75mm lower than the top opening plane of the water storage cylinder, and the curved part is located on the side wall of the outer cylinder.

[0016] Further, the edge of the funnel is provided with an annular mounting plane, the mounting plane is provided with bolt holes corresponding to the top of the outer cylinder, and the mounting plane is fixed to the top surface of the outer cylinder by bolts, and the filter screen is made of stainless steel and has a mesh diameter of not greater than 2mm.

[0017] Further, the weighing sensor is selected to be a spoke type weighing sensor, a circular hole is formed at the center position of the weighing sensor to facilitate the drain pipe to pass through, the diaphragm valve is selected to be an electric flat diaphragm valve, and the outer cylinder is further provided with a control module, the control module is electrically connected with the weighing sensor and the diaphragm valve, and is configured to trigger the drain operation once per hour and record the weight data.

[0018] Further, the control module is integrated with a wireless transmission unit, the wireless transmission unit adopts LoRa communication protocol and is configured to transmit the precipitation data to a remote server in real time.

[0019] Further, the mounting frame comprises a bottom ring, a supporting rod and a mounting platform, the bottom ring is fixed to the bottom of the outer cylinder, the supporting rod extends vertically upward and is connected with the mounting platform, and the weighing sensor is fixedly arranged on the mounting platform.

[0020] Further, when the valve port of the diaphragm valve is closed, the valve port is flush with the inner bottom surface of the measuring cylinder, and the thickness of the valve body is not greater than 3mm.

[0021] Further, the solar cell panel and the storage battery are electrically connected, and the storage battery is connected with the weighing sensor, the diaphragm valve and the control module respectively.

[0022] The utility model discloses the beneficial effect:

[0023] (1) the measurement accuracy is improved: the weighing sensor and the diaphragm valve combination realize ±0.1mm precipitation precision measurement, and the device does not adopt mechanical structure measurement, avoids the occurrence of the measurement error caused by abrasion;

[0024] (2) energy saving and environmental protection: the photovoltaic power supply system can make the equipment work continuously.

[0025] (3) Intelligent management: automatic drainage to empty the measuring cylinder every hour, and the LoRa wireless transmission distance reaches 5km;

[0026] (4) Siphon protection: when the water level of the water storage cylinder reaches the critical height of the siphon pipe, it is automatically emptied to prevent overflow. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will be briefly introduced the drawings needed to be used in the embodiment description, obviously, the drawings in the following description are only some embodiments of the utility model, for the ordinary skilled person in the art, under the premise of not paying the creative labor, other drawings can also be obtained according to these drawings.

[0028] Figure 1 It is the device perspective view of the utility model;

[0029] Figure 2 It is the device explosion view of the utility model;

[0030] Figure 3 It is the device internal section view of the utility model;

[0031] Figure 4 It is the device of the utility model Figure 3 The local enlarged view of A in the middle;

[0032] Figure 5 It is the support structure schematic view of the utility model;

[0033] Figure 6 It is the measuring assembly structure schematic view of the utility model;

[0034] Figure 7 It is the fixed part structure schematic view of the utility model;

[0035] Figure 8 It is the funnel structure schematic view of the utility model;

[0036] 1-support, 101-mounting base, 102-support frame, 103-solar cell panel, 104-battery, 2-outer cylinder, 201-annular step, 3-hopper, 301-filter screen, 302-mounting plane, 4-measuring assembly, 401-measuring cylinder, 402-weighing sensor, 403-drain pipe, 404-diaphragm valve, 405-mounting frame, 405a-bottom ring, 405b-supporting rod, 405c-mounting platform, 406-fixed part, 406a-inner ring, 406b-outer ring, 406c-connecting rod, 5-water storage cylinder, 501-siphon pipe, 6-control module. DETAILED DESCRIPTION

[0037] With reference to the accompanying drawings, the technical solutions in the embodiments of the present application will be clearly and completely described below, obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0038] Embodiment 1

[0039] Referring to Figures 1 to 8 The utility model discloses a precipitation measurement device, include: support 1, outer tube 2, hopper 3, measurement subassembly 4 and water storage tube 5,

[0040] Support 1 includes mounting base 101 and support frame 102, mounting base 101 is L shape disc structure, and at least two support frames 102 are welded to the side end, solar cell panel 103 and battery 104 are arranged on support frame 102, outer tube 2 is vertically inserted in mounting base 101,

[0041] The outer tube 2 top is opened and the inner wall middle part is equipped with annular step 201, the hopper 3 is fixed with bolt at outer tube 2 top opening, and the lower water gap is provided with filter screen 301.

[0042] By combining Figure 1 , Figure 2 , Figure 3 It is shown that mounting base 101 and support frame 102 are made of 304 stainless steel, which has good rigidity, and support frame 102 is fixed to mounting base 101 by welding. The outer tube 2 (transparent PC material, height 800mm, inner diameter Φ150mm) is vertically inserted into the annular cavity of the mounting base 101, and the solar cell panel 103 (power 20W) and the battery 104 (12V / 10Ah) are fixed on the support frame 102 by bolts, and the power supply system is formed by connecting the wires.

[0043] The measurement assembly 4 includes a measuring cylinder 401, a weighing sensor 402, a drain pipe 403, and a diaphragm valve 404. The weighing sensor 402 is fixedly arranged inside the outer tube 2 by a mounting bracket 405. The measuring cylinder 401 is arranged on the weighing sensor 402 and connected to the annular step 201 by a fixing member 406. The drain pipe 403 penetrates through the weighing sensor 402 and the bottom of the measuring cylinder 401. The diaphragm valve 404 is arranged at the connection between the drain pipe 403 and the bottom of the measuring cylinder 401.

[0044] Referring to Figure 4 , Figure 6The installation of the measuring assembly 4 is shown in the drawings: an annular step 201 (width 15 mm) is machined in the middle of the inner wall of the outer cylinder 2, and the measuring cylinder 401 (volume 600 ml, inner wall polished) is fixed on the step by the fixing member 406. The weighing sensor 402 (range 0-5 kg, accuracy ±0.5 g) is fixed to the bottom of the outer cylinder 2 by the mounting bracket 405, and the drain pipe 403 (Φ20 mm PVC pipe) is vertically arranged through the center hole of the sensor, with the lower end being 25 mm away from the bottom of the water storage cylinder 5.

[0045] The water storage cylinder 5 is arranged at the bottom of the outer cylinder 2 and directly below the drain pipe 403, and a U-shaped siphon 501 is arranged on the upper part of the side wall of the water storage cylinder 5, one end of the siphon 501 extending to the bottom of the water storage cylinder 5, and the other end extending to the outside through the outer cylinder 2.

[0046] Referring to Figure 3 The water storage cylinder 5 (capacity 15 L) is fixed to the bottom of the outer cylinder 2 by a flange, and a U-shaped siphon 501 (silicone material, inner diameter Φ10 mm) is arranged on the side wall of the water storage cylinder 5, with the highest point of the siphon being 50 mm away from the top plane of the water storage cylinder 5, and the water outlet end extending to the outside.

[0047] Example 2

[0048] In this embodiment, the fixing member 406 includes an inner ring 406a, an outer ring 406b and a connecting rod 406c arranged coaxially, the inner ring 406a is sleeved on the outer side of the measuring cylinder 401, and the outer ring 406b is fixed to the annular step 201 of the outer cylinder 2 by bolts.

[0049] Referring to Figure 4 , Figure 7 The inner ring 406a (Φ85 mm) is sleeved on the outer wall of the measuring cylinder 401, and the outer ring 406b (Φ160 mm) is fixed to the annular step 201 by six M6 bolts; the inner and outer rings are connected in a radial manner by three stainless steel connecting rods 406c (length 40 mm, diameter Φ5 mm), and the measuring cylinder 401 is placed in the inner ring 406a during installation, and then the outer ring bolts are fixed.

[0050] In this embodiment, the highest point of the siphon 501 is 40-75 mm lower than the top opening plane of the water storage cylinder 5, and the curved part of the siphon is arranged on the side wall of the outer cylinder 2.

[0051] It should be noted that, referring to Figure 3 The curved part of the siphon 501 is embedded in the mounting groove reserved in the side wall of the outer cylinder 2, and the highest point is 60 mm (error ±2 mm) away from the top plane of the water storage cylinder 5. When the water level of the water storage cylinder 5 rises to submerge the top end of the siphon 501, the siphon effect is triggered, and 12 L of water can be drained in 30 seconds, and the drainage flow rate is controlled to be 1.5 L / s through the inner diameter of the siphon.

[0052] In the embodiment, the funnel 3 is provided with an annular mounting plane 302, which is provided with bolt holes corresponding to the top of the outer cylinder 2, and is fixed to the top surface of the outer cylinder 2 by bolts. The filter screen 301 is made of stainless steel and has a mesh diameter of not greater than 2 mm.

[0053] In the embodiment, the weighing sensor 402 is a spoke-type weighing sensor, the center of which is provided with a circular hole for facilitating the passing of the drain pipe 403. The diaphragm valve 404 is an electric flat diaphragm valve. The outer cylinder 2 is further provided with a control module 6, which is electrically connected with the weighing sensor 402 and the diaphragm valve 404, and is configured to trigger the drainage operation once per hour and record the weight data.

[0054] In the embodiment, the control module 6 is integrated with a wireless transmission unit, which adopts a LoRa communication protocol and is configured to transmit the precipitation data to a remote server in real time.

[0055] It should be noted that, as shown in Figure 3 , Figure 5 The spoke-type weighing sensor 402 (model CZL301) has a center hole with a diameter of Φ22 mm, and the drain pipe 403 has an outer diameter of Φ20 mm. The gap between the two is filled with a silica gel sealing ring. The control module 6 is integrated and installed on the side wall of the outer cylinder 2. The main control chip adopts an STM32F407, and the timer sends a signal to the electric flat diaphragm valve 404 (model EPDV-15, valve body thickness 2.8 mm) every hour. The opening time is set to 6 seconds. After the drainage is completed, the valve is automatically reset and the weight data is stored. The LoRa wireless transmission unit (model SX1278) of the control module 6 has a working frequency band of 433 MHz and a transmission power of 20 dBm. The encrypted precipitation data (format: timestamp + weight value) is sent to the base station within 1 km every 10 minutes. The base station forwards the data to the cloud server through the 4G network.

[0056] In the embodiment, the mounting bracket 405 includes a bottom circular ring 405a, a support rod 405b, and a mounting platform 405c. The bottom circular ring 405a is fixed to the bottom of the outer cylinder 2. The support rod 405b extends vertically upward and connects the mounting platform 405c. The weighing sensor 402 is fixedly arranged on the mounting platform 405c.

[0057] It should be noted that, as shown in Figure 6 The bottom circular ring 405a (Φ140 mm) of the mounting bracket 405 is fixed to the bottom of the outer cylinder 2 by bolts. The five support rods 405b (height 120 mm, Φ10 mm stainless steel pipe) are distributed in a circular array, and the top is welded with the mounting platform 405c (edge length 100 mm). The weighing sensor 402 is fixed to the platform by four M5 bolts, and the gap between the bottom surface of the sensor and the platform can be filled with shockproof rubber pads.

[0058] In this embodiment, the valve port of the diaphragm valve 404 is flush with the inner bottom surface of the measuring cylinder 401 when closed, and the valve body thickness is not more than 3 mm.

[0059] Referring to Figure 4 As shown, the valve plate of the electric flat diaphragm valve 404 uses a fluororubber sealing ring, and the flush error with the inner bottom surface of the measuring cylinder 401 is ≤0.1 mm when closed. The valve body thickness is 2.5 mm, and the junction of the drain pipe 403 and the valve body is coated with waterproof silicone grease to ensure no leakage.

[0060] In this embodiment, the solar panel 103 and the battery 104 are electrically connected, and the battery 104 is connected with the weighing sensor 402, the diaphragm valve 404 and the control module 6 respectively.

[0061] Referring to Figure 1 , Figure 2 As shown, the solar panel 103 charges the battery 104 through the MPPT controller (model EPever Tracer3210AN), and the battery output is divided into three paths:

[0062] 1. Weighing sensor 402: 12V / 0.1A;

[0063] 2. Diaphragm valve 404: 12V / 0.5A (pulse power supply);

[0064] 3. Control module 6: 5V / 0.2A;

[0065] Among them, the standby power consumption of the system is ≤1W, and it can maintain operation for 15 days under continuous rainy weather.

[0066] Through the implementation of the device, it is tested that in the simulated rainfall environment, the measurement error of the device is ≤±0.2mm per hour, the residual amount of the siphon system drainage is <5ml; after the mixed silt (particle size ≤3mm) is poured into the rainwater, the filter screen 301 and the drain pipe 403 run continuously for 72 hours without blocking; the maximum communication distance of LoRa transmission in urban environment is 1.2km, and the data packet loss rate is <0.1%. Therefore, the device can be widely used in the field of precipitation measurement, and help people solve a large number of problems.

[0067] The preferred embodiments disclosed above are only used to help describe the utility model. The preferred embodiments do not describe all the details and do not limit the utility model to the specific embodiments. Obviously, according to the content of the specification, many modifications and changes can be made. The specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that the persons skilled in the art can well understand and utilize the utility model. The utility model is limited by the claims and the entire scope and equivalents thereof.

Claims

1. A precipitation measuring device, characterized in that The utility model relates to a rainwater collector, which comprises a support (1), an outer cylinder (2), a funnel (3), a measuring assembly (4) and a water storage cylinder (5). The support (1) comprises a mounting base (101) and a support frame (102), the mounting base (101) is an L-shaped disc structure, at least two support frames (102) are welded at the side ends of the mounting base (101), a solar panel (103) and a storage battery (104) are arranged on the support frame (102), and the outer cylinder (2) is vertically inserted into the mounting base (101). The outer cylinder (2) is open at the top and is provided with an annular step (201) in the middle of the inner wall, the funnel (3) is fixed by bolts at the top opening of the outer cylinder (2), and a filter screen (301) is arranged at the water outlet of the funnel (3). The measuring assembly (4) comprises a measuring cylinder (401), a load cell (402), a drain pipe (403) and a diaphragm valve (404), the load cell (402) is fixedly arranged in the outer cylinder (2) by a mounting bracket (405), the measuring cylinder (401) is arranged on the load cell (402) and connected to the annular step (201) by a fixing member (406), the drain pipe (403) penetrates through the load cell (402) and the bottom of the measuring cylinder (401) and is connected, and the diaphragm valve (404) is arranged at the connection between the drain pipe (403) and the bottom of the measuring cylinder (401). The water storage cylinder (5) is arranged at the bottom of the outer cylinder (2) and directly below the drain pipe (403), a U-shaped siphon pipe (501) is arranged at the upper part of the side wall of the water storage cylinder (5), one end of the siphon pipe (501) extends to the bottom of the water storage cylinder (5), and the other end extends to the outside through the outer cylinder (2). The fixing member (406) comprises an inner ring (406a), an outer ring (406b) and a connecting rod (406c) arranged coaxially, the inner ring (406a) is sleeved on the outside of the measuring cylinder (401), and the outer ring (406b) is fixed on the annular step (201) of the outer cylinder (2) by bolts.

2. The precipitation measuring device of claim 1, wherein The highest point of the siphon pipe (501) is 40-75 mm lower than the top opening plane of the water storage cylinder (5), and the curved part of the siphon pipe (501) is located on the side wall of the outer cylinder (2).

3. The precipitation measuring device of claim 1, wherein An annular mounting plane (302) is arranged at the edge of the funnel (3), the mounting plane (302) is provided with bolt holes corresponding to the top of the outer cylinder (2), the funnel (3) is fixed to the top surface of the outer cylinder (2) by bolts, and the filter screen (301) is made of stainless steel and has a mesh diameter of not greater than 2 mm.

4. The precipitation measuring device of claim 1, wherein The load cell (402) is a spoke type load cell, a circular hole is formed at the center position of the load cell (402) to facilitate the drain pipe (403) to penetrate through, the diaphragm valve (404) is an electric flat bottom diaphragm valve, the outer cylinder (2) is further provided with a control module (6), the control module (6) is electrically connected with the load cell (402) and the diaphragm valve (404), and is configured to trigger the drain operation once an hour and record the weight data.

5. The precipitation measuring device of claim 1, wherein The control module (6) is integrated with a wireless transmission unit, the wireless transmission unit adopts a LoRa communication protocol and is configured to transmit the precipitation data to a remote server in real time.

6. A precipitation measuring device according to claim 5, wherein ​ 7. The precipitation measuring device of claim 1, wherein The mounting frame (405) comprises a bottom ring (405a), a supporting rod (405b) and a mounting platform (405c), the bottom ring (405a) is fixed to the bottom of the outer cylinder (2), the supporting rod (405b) extends vertically upward and is connected with the mounting platform (405c), and the weighing sensor (402) is fixedly arranged on the mounting platform (405c).

8. The precipitation measuring device of claim 1, wherein The diaphragm valve (404) is flush with the inner bottom surface of the measuring cylinder (401) when the valve port is closed, and the thickness of the valve body is not more than 3 mm.

9. The precipitation measuring device according to claim 1 or 5, wherein The solar cell panel (103) and the storage battery (104) are electrically connected, and the storage battery (104) is connected with the weighing sensor (402), the diaphragm valve (404) and the control module (6) respectively.

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