Weighing type rain and snow meter

Abstract

The utility model relates to the technical field of hydro meteorological measuring equipment, in particular to a weighing type rain and snow meter, which comprises a weight measuring instrument, a collecting device (1) and a heating device (4), the weight measuring instrument comprises a base (2), a supporting assembly (3), a scale pan, a load sensor, a communication device and a controller, wherein the load sensor and the communication device are respectively connected with the controller; the collecting device (1) is composed of an inner barrel (5) and an outer barrel (6) which are coaxial, coaxial collecting openings are formed in the top ends of the inner barrel (5) and the outer barrel (6), the bottom of the inner barrel (5) is fixedly connected with the upper portion of the tray, an opening is formed in the bottom of the outer barrel (6), the base (2) is connected with the opening, and a gap between the base (2) and the supporting assembly (3) serves as a circuit cabin (7). The heating device (4) is attached to the outer wall of the outer barrel (6) in a surrounding mode and used for increasing the temperature in the collecting device (1). The rain and snow meter is high in measurement stability and can normally operate under a low-temperature condition.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrological and meteorological measuring equipment, in particular to a weighing type rain and snow gauge. Background Art

[0002] In the field of hydrological and meteorological measurement, especially in the accurate measurement of precipitation, the existing technology still faces some significant challenges and limitations. Although the traditional rain and snow gauges on the market are widely used, such as the tipping bucket rain gauge, there are a series of problems, including insufficient measurement accuracy, frequent manual maintenance, high maintenance costs and slow response speed.

[0003] The main drawback of these devices is their structural limitations. Due to their unstable structure, the measurement results are easily affected by external conditions. For example, the tipping bucket rain gauge relies on mechanical flipping to record precipitation. This mechanical structure is easily disturbed by environmental factors such as wind speed and temperature changes, thus affecting the accuracy and stability of the measurement results.

[0004] The application number is 202020478978.X, and the name is Rainfall Measuring Device. It proposes a rainfall measuring device that can improve stability. However, in a low-temperature environment, its electronic components are easily affected by the environment, causing failures and thus being unable to continue working. Therefore, the rainfall measuring device cannot measure snowfall. Since their performance in low-temperature environments is often insufficient, their application in harsh climate conditions is limited. Utility Model Content

[0005] The purpose of the utility model is to overcome the above-mentioned defects of the prior art, thereby providing a weighing type rain and snow meter.

[0006] In order to solve the above technical problems, the technical solution of the utility model provides a weighing type rain and snow meter, comprising: a weight measuring instrument, a collecting device 1 and a heating device 4; wherein,

[0007] The weight measuring instrument comprises: a base 2, a supporting assembly 3, a weighing pan, a load sensor, a communication device and a controller, wherein the load sensor is placed in the base, and the load sensor and the communication device are respectively connected to the controller;

[0008] The collecting device 1 is composed of a coaxial inner barrel 5 and an outer barrel 6, wherein the tops of the inner barrel 5 and the outer barrel 6 are provided with coaxial collecting ports, the bottom of the inner barrel 5 is fixedly connected to the upper part of the tray, the bottom of the outer barrel 6 is provided with an opening, the base 2 is connected to the opening, and the gap between the base 2 and the supporting assembly 3 serves as a circuit cabin 7;

[0009] The heating device 4 surrounds and fits the outer wall of the outer barrel 6 to increase the internal temperature of the collecting device 1 .

[0010] Preferably, the heating device 4 is a heating belt, and the heating device 4 surrounds and fits the outer wall of the collecting port of the outer barrel 6 .

[0011] Preferably, the base 2 is provided with connection terminals 9, which are respectively connected to the heating device cable 8 and the external power supply.

[0012] Preferably, the support assembly 3 is used for vibration reduction, including: a support frame 31, fixedly connected to the top of the base 2; a support plate 32, fixedly connected to the bottom of the scale pan; a plurality of support rods 33, located between the support frame 31 and the support plate 32, one end of each support rod 33 is fixedly connected to the support frame 31, and the other end is movably connected to the support plate 32; and a plurality of vibration-reducing springs 34, respectively wrapped around the support rods 33, one end of which is against the support frame 31, and the other end of which is against the support plate 32.

[0013] Preferably, the support plate 32 is Y-shaped, and the support frame 31 has a shape matching the support plate 32 ; the support assembly 3 includes three pillars 33 , which are respectively located near the three ends of the support plate 32 .

[0014] Preferably, the support plate 32 is Y-shaped, the cross section of the support frame 31 is U-shaped, and the U-shaped opening is upward; when not weighed, the support plate 32 is located above the opening.

[0015] Preferably, the support assembly 3 further comprises: a height adjusting member 35 for adjusting the support frame 31 to be in a horizontal state, and the support assembly 3 is connected to the base 2 via the height adjusting member 35 .

[0016] Preferably, the heating device 4 is also connected to the controller; the weighing rain and snow meter also includes: a first thermometer and a second thermometer, the first thermometer is located inside the inner barrel 5, and is used to monitor the internal temperature of the collection device 1, and the second temperature sensor is located outside the outer barrel 6, and is used to monitor the external temperature of the collection device 1; the first thermometer and the second thermometer are both connected to the controller.

[0017] Preferably, the controller comprises: a main controller and a memory, a digital-to-analog conversion chip, a USB interface and an RS-485 communication interface respectively connected thereto;

[0018] The load sensor is connected to the main controller via a digital-to-analog conversion chip.

[0019] Preferably, a circuit board is provided in the circuit compartment 7, and a displacement sensor is provided on the circuit board.

[0020] Compared with the prior art, the advantage of the utility model is that the weighted rain and snow meter provided by the utility model adopts a stable chassis design, which significantly improves the stability of the measurement, and is also equipped with a heating belt to ensure normal operation under low temperature conditions. Compared with existing products on the market, the utility model shows significant advantages in data accuracy and performance in low temperature environments. The weighing rain and snow meter provided by the utility model is based on the weighing principle and can accurately measure the mass of rain or snow, providing key data for meteorological observation, hydrological research, agricultural irrigation and other fields. It helps to better understand and predict weather patterns and their impact on the environment and human activities in the future. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of a weighing rain and snow meter provided in an embodiment of the utility model;

[0022] Figure 2 A top view of a weighing rain and snow gauge provided in an embodiment of the utility model;

[0023] Figure 3 It is a cross-sectional schematic diagram of the connection between the outer barrel 6 and the base;

[0024] Figure 4 It is a schematic diagram of the connection between the base and the supporting assembly;

[0025] Figure 5 is a side view of the support assembly;

[0026] Figure 6 is a perspective view of the support assembly;

[0027] Figure 7 A top view of the pallet.

[0028] Figure ID

[0029] 1. Collection device 2. Base 3. Support assembly

[0030] 4. Heating device 5. Inner barrel 6. Outer barrel

[0031] 7. Circuit compartment 8. Heating device cable 9. Connection terminal

[0032] 31. Support frame 32. Support plate 33. Support rod

[0033] 34. Damping spring 35. Height adjustment part DETAILED DESCRIPTION

[0034] The technical solution provided by the utility model is further explained below in conjunction with embodiments.

[0035] The weighing type rain and snow meter provided in this embodiment comprises: a weight measuring instrument and a collecting device 1 placed thereon; wherein the weight measuring instrument comprises: a base 2, a supporting assembly 3, a weighing pan, a load sensor, a communication device and a controller; the upper part of the weighing pan is connected to the bottom of the collecting device 1, the load sensor is placed in the base, and the load sensor and the communication device are respectively connected to the controller; Figure 1-2 As shown, the weighing rain and snow meter also includes: a heating device 4 for increasing the internal temperature of the collecting device 1.

[0036] In this embodiment, the collecting device 1 is composed of a coaxial inner barrel 5 and an outer barrel 6, the tops of the inner barrel 5 and the outer barrel 6 are provided with coaxial collecting ports, the bottom of the inner barrel 5 is fixedly connected to the upper part of the tray, and the bottom of the outer barrel 6 is provided with an opening, such as Figure 1-3 As shown, the base 2 is connected to the opening, and the gap between the base 2 and the support assembly 3 is used as a circuit compartment 7, and a circuit board is arranged in the circuit compartment 7. The outer barrel can protect the components on the base from external pollution. The inner barrel 5 is used to receive falling rain or snow.

[0037] In this embodiment, the heating device 4 is a heating belt, which surrounds and fits the outer wall of the collection port of the outer barrel 6. The heating belt is low-priced and simple in structure, and has a large contact area with the outer barrel 6 and a good heating effect. Through the design of the heating belt, this embodiment improves the low-temperature adaptability of the overall device, ensuring that it can work normally even in a low-temperature environment, and is particularly suitable for use in cold areas or in winter.

[0038] The weighing rain and snow meter provided in this embodiment also includes: a thermometer for monitoring the internal and external temperature of the collection device 1; the thermometer is connected to the controller. The heating belt is equipped with a heating pin control function, allowing the device to respond quickly under low temperature conditions. During application, the controller can control the heating belt to start or shut down according to the temperature collected by the thermometer. When the collected temperature is lower than the first predetermined temperature value, the heating belt is started, and when the collected temperature rises to the second predetermined temperature value, the heating belt is turned off, so that the internal temperature of the outer barrel 6 is always kept within a certain temperature range. This principle is a technical means well known to people in the field, similar to the automatic temperature control function of a kettle. The utility model uses the data collected by the thermometer to adjust the working state of the heating belt so that the overall device can adapt to changes in ambient temperature. This control capability ensures the stable operation of the device under various climatic conditions, whether in mild or severe weather conditions. At the same time, the heating belt is turned off when the predetermined second temperature value is reached, which also achieves the purpose of energy saving, so that the design of the heating belt fully considers energy efficiency while ensuring heating efficiency. After the heating belt is turned off, the residual heat can continue to heat the outer barrel 6. Therefore, under the premise of low energy consumption, continuous and effective heating can be provided to maintain the best operating state of the equipment, while reducing energy consumption, which is in line with the modern energy-saving and environmental protection design concept.

[0039] In order to facilitate the use of the heating belt, in this embodiment, a connection terminal 9 is provided on the base 2, and the connection terminal 9 is connected to the heating device cable 8 and the external power supply respectively.

[0040] In order to prevent the entire device from vibrating and affecting the accuracy of the collected weight data, the support assembly 3 of this embodiment has a vibration reduction function. The anti-vibration structure introduced in this embodiment reduces the impact of environmental vibration on the accuracy of the equipment and ensures the accuracy of the measurement data.

[0041] Specifically, Figures 4 to 7 As shown, the support assembly 3 includes:

[0042] A support frame 31 is fixedly connected to the top of the base 2;

[0043] A support plate 32, fixedly connected to the bottom of the scale pan;

[0044] A plurality of supporting rods 33 are located between the supporting frame 31 and the supporting plate 32, one end of each supporting rod 33 is fixedly connected to the supporting frame 31, and the other end is movably connected to the supporting plate 32; and

[0045] A plurality of damping springs 34 are respectively wound around the support rods 33 , with one end abutting against the support frame 31 and the other end abutting against the support plate 32 .

[0046] In order to improve the stability of the support assembly, the support plate 32 of this embodiment is designed to be Y-shaped, and the support frame 31 has a shape matching the support plate 32; the support assembly 3 includes three pillars 33, which are respectively located near the three ends of the support plate 32. The cross-section of the support frame 31 is U-shaped, and the U-shaped opening is upward; when not weighed, the support plate 32 is located above the opening. This embodiment uses a stable Y-shaped, that is, a triangular design, to improve the durability and stability of the equipment.

[0047] In order to avoid affecting the accuracy due to the tilt of the support frame 31, in this embodiment, the support frame 31 is adjusted to be in a horizontal state through a height adjustment member 35, and the support frame 31 is connected to the base 2 through the height adjustment member 35. The height adjustment member 35 can be a screw.

[0048] In order to improve durability and strength, in this embodiment, the chassis 2 is made of high-strength aluminum material, which is selected for its excellent strength-to-weight ratio and good corrosion resistance, ensuring that the equipment has extremely high durability and stability even under extreme weather conditions. The inner barrel 5 and the outer barrel 6 use polyethylene PE, which is a lightweight and elastic plastic with good impact strength and environmental stress cracking resistance, suitable for maintaining performance under different climatic conditions. In the mechanical condition test, the weighing rain and snow meter provided in this embodiment passed strict verification, including broadband random vibration test, non-steady-state vibration (shock) test and free fall test. This embodiment improves the durability and stability of the equipment, especially under extreme climatic conditions, through the selection of materials and the setting of the support component 3 structure. These designs not only improve the accuracy of the data, but also make the equipment easy to install and maintain, reducing the cost and complexity of long-term operation.

[0049] The controller comprises: a main controller and a memory, a digital-to-analog conversion chip, a USB interface and an RS-485 communication interface respectively connected thereto; the load sensor is connected to the main controller via the digital-to-analog conversion chip.

[0050] In this embodiment, the components can be of the following models:

[0051] Central Controller: STM32F429

[0052] Temperature Sensor: DS18B20

[0053] Memory: W25Q256

[0054] Analog-Digital Converter: AD7190

[0055] USB Communication Module: CH340G

[0056] RS-485 Communication Interface: THVD1410

[0057] Dynamic Displacement Sensing Module: BM11

[0058] In this embodiment, the specific structure of the controller is as follows:

[0059] The main controller STM32F429 is the central processing unit, which is connected to the following hardware:

[0060] Connected to two thermometers DS18B20 to monitor the temperature conditions inside and outside the system.

[0061] It is connected to the dynamic displacement sensing module BM11 and is used to detect data errors caused by jitter; the dynamic displacement sensing module BM11 is installed on the circuit board in the circuit compartment 7.

[0062] Connected to memory W25Q256, responsible for data storage.

[0063] Connected to the digital-to-analog conversion chip AD7190, it converts the analog signal into a digital signal for processing.

[0064] Connected to USB communication module CH340G for data communication of USB interface.

[0065] Connected to RS-485 communication interface THVD1410 for long-distance data communication;

[0066] Core processor: Ultra-low power ARM processor is selected as the core data processing board.

[0067] Due to the selection of the above models, this embodiment has the advantage of data processing optimization. Specifically, this embodiment uses the high-precision analog-to-digital conversion chip AD7190 manufactured by Analog Devices, which provides industry-leading noise performance with 24-bit resolution, low noise, wide dynamic range and low drift characteristics. Its input range flexibility and data output rate of up to 4.8kHz ensure that the analog signal from the load sensor (capturing the weight of rain or snow) is converted into digital data with high accuracy and minimal error. The high performance and stability of the AD7190 chip and the error correction capability of the dynamic displacement sensing module allow the system to deliver highly accurate measurement results even under harsh environmental conditions, significantly improving the overall performance of the weather station.

[0068] This embodiment also improves the data transmission capability. In terms of data transmission capability, this embodiment integrates the USB communication module CH340G and the RS-485 communication interface THVD1410. These two hardware components jointly support fast and efficient data upload. CH340G is a commonly used USB to serial port chip that can convert USB signals into UART (universal asynchronous receive / transmit) signals, supports various baud rates and serial communication standards, and ensures that data can be safely and quickly transmitted from the device to the computer system. THVD1410 is an RS-485 interface chip that supports long-distance and high-speed data communication, which is very suitable for application in industrial environments, ensuring that data will not be lost even in long-distance transmission. The combination of these two technologies not only improves the data transmission efficiency, but also enhances the communication stability of the system in complex environments, providing reliable data support for meteorological and hydrological measurements. Data transmission includes RS-485 communication mode to support fast and efficient data upload.

[0069] The data transmission and interface design are also significantly innovative. It includes multiple types of interfaces, such as the standard USB interface CH340G and the industrial-grade RS-485 communication interface THVD1410. These interfaces are located on the side of the device near the bottom, ensuring the convenience of data transmission and the ease of use of the device. The USB interface is used for conventional data reading and device configuration, while the RS-485 interface provides higher signal stability and a longer communication distance. Such an interface design not only allows the device to be easily integrated into the existing data network, but also supports multiple data transmission standards, ensuring the timeliness and accuracy of data transmission.

[0070] During the application process, the working principle of this embodiment is:

[0071] The inner barrel 5 is fixed to the tray, and the outer barrel 6 is fixed to the base 2. Rainwater or snow enters the inner barrel 5, and the added weight is collected by the load sensor, so that the rainfall or precipitation in the corresponding time can be calculated. The data collected by the load sensor is converted by the digital-to-analog conversion chip and sent to the main controller, and stored by the memory. When the measurement personnel need the data, the main controller sends it to the measurement personnel through the communication device connected to the USB interface or RS-485 communication interface. At the same time, during the application process, the temperature sensor monitors the internal temperature of the outer barrel in real time. The main controller controls the start or stop of the heating belt based on the internal temperature to keep the temperature inside the outer barrel 6 within a certain range.

[0072] The technical solution of the utility model significantly improves the performance of the weighing rain and snow meter through innovative circuit design and chassis structure optimization. These technical innovations make the device far superior to existing technologies in terms of stability and environmental adaptability, and provide strong technical support for the accurate measurement of hydrological and meteorological data. From the above specific description of the utility model, it can be seen that the utility model provides a more accurate and stable weighing rain and snow meter. The rain and snow meter significantly improves the stability of the measurement by adopting a stable chassis design, and is also equipped with a heating belt to ensure normal operation under low temperature conditions. Compared with traditional rain and snow meters, the weighing rain and snow meter provided by the utility model shows significant advantages in data accuracy and performance in low temperature environments.

[0073] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not intended to limit it. Although the utility model is described in detail with reference to the embodiments, a person skilled in the art should understand that any modification or equivalent replacement of the technical solution of the utility model does not deviate from the spirit and scope of the technical solution of the utility model, and should be included in the scope of the claims of the utility model.

Claims

1. A weighing type rain and snow meter, characterized in that: include: A weight measuring instrument, a collecting device (1) and a heating device (4); wherein: The weight measuring instrument comprises: a base (2), a support assembly (3), a weighing pan, a load sensor, a communication device and a controller, wherein the load sensor is placed in the base, and the load sensor and the communication device are respectively connected to the controller; The collecting device (1) is composed of a coaxial inner barrel (5) and an outer barrel (6); the tops of the inner barrel (5) and the outer barrel (6) are provided with coaxial collecting ports; the bottom of the inner barrel (5) is fixedly connected to the upper part of the tray; the bottom of the outer barrel (6) is provided with an opening; the base (2) is connected to the opening; and the gap between the base (2) and the supporting assembly (3) serves as a circuit cabin (7); The heating device (4) surrounds and fits the outer wall of the outer barrel (6) and is used to increase the internal temperature of the collecting device (1).

2. The weighing type rain and snow meter according to claim 1, characterized in that: The heating device (4) is a heating belt, and the heating device (4) surrounds and fits the outer wall of the collection port of the outer barrel (6).

3. The weighing type rain and snow meter according to claim 1, characterized in that: The base (2) is provided with connection terminals (9) which are respectively connected to the heating device cable (8) and the external power supply.

4. The weighing type rain and snow meter according to claim 1, characterized in that: The support assembly (3) is used for vibration reduction and comprises: A support frame (31) fixedly connected to the top of the base (2); A support plate (32) fixedly connected to the bottom of the weighing pan; A plurality of support rods (33) are located between the support frame (31) and the support plate (32), one end of each support rod (33) is fixedly connected to the support frame (31), and the other end is movably connected to the support plate (32); and A plurality of damping springs (34) are respectively wound around the support rods (33), with one end abutting against the support frame (31) and the other end abutting against the support plate (32).

5. The weighing type rain and snow meter according to claim 4, characterized in that: The support plate (32) is Y-shaped, and the support frame (31) has a shape matching the support plate (32); the support assembly (3) comprises three support rods (33) respectively located near the three ends of the support plate (32).

6. The weighing type rain and snow meter according to claim 4, characterized in that: The support plate (32) is Y-shaped, the support frame (31) has a U-shaped cross section, and the U-shaped opening faces upward; when not weighed, the support plate (32) is located above the opening.

7. The weighing type rain and snow meter according to claim 4, characterized in that: The support assembly (3) further comprises: a height adjustment member (35) for adjusting the support frame (31) to a horizontal state, and the support assembly (3) is connected to the base (2) via the height adjustment member (35).

8. The weighing type rain and snow meter according to claim 1, characterized in that: The heating device (4) is also connected to the controller; the weighing rain and snow meter also includes: a first thermometer and a second thermometer, the first thermometer is located inside the inner barrel (5) and is used to monitor the internal temperature of the collection device (1), and the second thermometer is located outside the outer barrel (6) and is used to monitor the external temperature of the collection device (1); the first thermometer and the second thermometer are both connected to the controller.

9. The weighing type rain and snow meter according to claim 1, characterized in that: The controller comprises: a main controller and a memory, a digital-to-analog conversion chip, a USB interface and an RS-485 communication interface respectively connected thereto; The load sensor is connected to the main controller via a digital-to-analog conversion chip.

10. The weighing type rain and snow meter according to claim 1, characterized in that: The circuit compartment (7) has a circuit board therein, and the circuit board is provided with a displacement sensor.

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