Artificial simulation rainfall calibration system
The system, consisting of a rain collector and a rain sensor, combined with a piezoelectric vibrator and signal processing circuit, automatically detects and calculates rainfall and rainfall intensity, solving the problems of cumbersome operation and low accuracy in existing technologies, and achieving efficient simulated rainfall calibration.
Patent Information
- Application Number
- CN202520632252.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-03
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-04-03
AI Technical Summary
Existing artificial rainfall simulation equipment requires multiple manual collection and calculation of rainfall during the simulation process, which is cumbersome and has low accuracy, making it difficult to achieve accurate simulation rainfall calibration.
The system consists of a rain collector, an inlet pipe, a rainwater storage device, an intermediate pipe, a pumping pipe, and a rain sensor. Combined with a piezoelectric vibrator, a signal processing circuit, and a processor, it automatically detects and calculates rainfall and rain intensity, achieving accurate measurement and calibration of rainfall and rain intensity.
It enables accurate measurement and calibration of artificially simulated rainfall, reduces manual operation, improves the repeatability and accuracy of the system, and reduces the workload of personnel.
Smart Images
Figure CN223926648U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of environmental simulation technology, and in particular to an artificial rainfall calibration system. Background Technology
[0002] The artificial rainfall simulation system is a jet-type artificial rainfall simulation device specifically developed for scientific research experiments, and it is the most important component of the soil and water loss monitoring system.
[0003] Currently, most artificial rainfall simulation devices on the market only simulate the process of artificial rainfall. However, these devices require multiple rain gauges to manually collect rainfall data repeatedly during operation, and then perform calculations and calibrations to achieve the accurate simulated rainfall calibration parameters required by users. This process is relatively cumbersome and has low accuracy. Utility Model Content
[0004] This application provides an artificial simulated rainfall calibration system, which solves the problem that in the existing technology, multiple rain gauges are needed to manually collect rainfall data multiple times before calculation and calibration during the operation of simulated rainfall equipment. This operation is cumbersome and has low certainty. The system achieves the technical effect of accurately measuring and calibrating the rainfall and intensity of artificial simulated rainfall, with high repeatability and reduced manual workload.
[0005] This utility model provides an artificial simulated rainfall calibration system, including a rain collector, an inlet pipe, a rainwater storage tank, an intermediate pipe, a pumping pipe, and a rainfall sensor. The input end of the rain collector is used to collect rainwater from simulated rainfall, and the output end of the rain collector is connected to one end of the inlet pipe. The other end of the inlet pipe is connected to the output end of the rainwater storage tank. The other end of the rainwater storage tank is connected to one end of the intermediate pipe, and the other end of the intermediate pipe is connected to the pumping pipe, which is used to discharge rainwater from the rainwater storage tank. The rainfall sensor is located on the outside of the rain collector and is configured to detect rainfall amount and intensity over a period of time.
[0006] In one possible implementation, a flow meter is also included; the flow meter is disposed on the pumping pipe and is configured to calculate the flow rate of rainwater flowing through the pumping pipe over a period of time.
[0007] In one possible implementation, the rain sensor includes a piezoelectric vibrator, a signal processing circuit, and a processor; the piezoelectric vibrator is configured to convert the vibration signal generated by raindrops impacting the rain collector into an electrical signal; the piezoelectric vibrator is electrically connected to the input terminal of the signal processing circuit, and the output terminal of the signal processing circuit is electrically connected to the processor; the signal processing circuit is configured to process the electrical signal to obtain a DC pulse signal; the processor is configured to convert the peak voltage in the DC pulse signal into the volume of each raindrop, and sum the volumes of all raindrops to obtain the rainfall amount.
[0008] In one possible implementation, the signal processing circuit includes a first signal processing circuit and a second signal processing circuit; the signal input terminal of the first signal processing circuit is connected to the piezoelectric vibrator, the signal output terminal of the first signal processing circuit is connected to the processor, and the second signal processing circuit is connected in parallel with the first signal processing circuit; the first signal processing circuit is configured to process the electrical signal to obtain a first DC pulse signal; and the second signal processing circuit is configured to process the electrical signal to obtain a second DC pulse signal.
[0009] In one possible implementation, the processor includes a rainfall measurement module and a rainfall intensity calculation module; the rainfall measurement module is configured to measure the cumulative rainfall over a specified time period; the rainfall intensity calculation module is configured to calculate the instantaneous rainfall intensity over a certain time period based on the recording duration and the accumulated rainfall within the recording duration; the signal output terminals of the first signal processing circuit and the second signal processing circuit are both electrically connected to the rainfall measurement module; the rainfall intensity calculation module is electrically connected to the rainfall measurement module.
[0010] In one possible implementation, the processor further includes a rainfall intensity conversion and calibration module; the rainfall intensity conversion and calibration module is electrically connected to the rainfall intensity calculation module, and the rainfall intensity conversion and calibration module is configured to convert simulated rainfall intensity into equivalent natural rainfall intensity.
[0011] In one possible implementation, the processor further includes a data storage module; the data storage module is electrically connected to both the rainfall measurement module and the rainfall intensity calculation module.
[0012] In one possible implementation, a display module is also included; the display module is electrically connected to the rainfall measurement module, the rainfall intensity calculation module, and the rainfall intensity conversion calibration module, respectively.
[0013] One or more technical solutions provided in this application have at least the following technical effects:
[0014] This embodiment of the invention employs an artificial simulated rainfall calibration system, comprising a rain collector, an inlet pipe, a rainwater storage tank, an intermediate pipe, a pumping pipe, and a rainfall sensor. The input end of the rain collector collects simulated rainfall, and its output end is connected to one end of the inlet pipe. The other end of the inlet pipe is connected to the output end of the rainwater storage tank. The other end of the rainwater storage tank is connected to one end of the intermediate pipe, and the other end of the intermediate pipe is connected to the pumping pipe, which discharges the rainwater from the rainwater storage tank. The rainfall sensor is located on the outside of the rain collector and is configured to detect rainfall over a period of time. The simulated rainfall is collected by the rain collector, which vibrates under the influence of water droplets. The rainfall sensor detects and converts the vibration signal into an electrical signal, which is then processed to calculate the simulated rainfall amount and intensity, and performs calibration. This application solves the problem that existing technologies require multiple rain gauges to manually collect rainfall data repeatedly before calculation and calibration during the operation of simulated rainfall equipment, which is cumbersome and has low certainty. It achieves the technical effect of accurately measuring and calibrating the rainfall and intensity of artificially simulated rainfall, with high repeatability and reduced manual workload. Attached Figure Description
[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 A schematic diagram of an artificial rainfall calibration system provided in this application embodiment;
[0017] Figure 2 A schematic diagram of a rain sensor provided in an embodiment of this application;
[0018] Figure 3 This is a schematic diagram of a simulated rainfall calibration system provided in an embodiment of this application.
[0019] Figure 4 This is a schematic diagram of an artificial rainfall calibration system provided in an embodiment of this application.
[0020] Icons: 1-Rain collector; 2-Inlet pipe; 3-Rainwater storage device; 4-Intermediate pipe; 5-Pumping pipe; 6-Rain sensor; 7-Flow meter; 8-Display module. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.
[0022] In the description of the embodiments of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing the embodiments of this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this utility model can be understood according to the specific circumstances.
[0023] During the experiment, different rainfall intensities are needed to meet the experimental requirements. However, the rainfall controller cannot directly provide the target rainfall intensity; it is necessary to look up the corresponding pressure value according to a pre-set calibration table. The controller is fundamentally a pressure controller. Therefore, before the rain generator can be used normally, a significant amount of time and effort is required to calibrate the target rainfall intensity to establish the correspondence between "rainfall intensity-pressure-nozzle combination" and to consider the uniformity of rainfall within the effective rainfall area. Existing artificial rainfall simulators can only simulate the process of natural rainfall, but they cannot calibrate the target rainfall intensity, or they can only do so manually, which is cumbersome and has low accuracy.
[0024] The manual calibration method is as follows: First, prepare several small buckets of the same size and one 500 ml graduated cylinder, based on the rainfall area. Second, evenly place these buckets at 1-meter intervals within the effective rainfall area. Third, measure the diameter of the bucket opening and calculate the area of the opening. Fourth, open the system, and in the calibration table settings, input the target rainfall intensity to be calibrated, the estimated pressure value, and the required nozzle combination. Return to the main interface and start timing the rainfall at the target rainfall intensity for 5 minutes. Fifth, after the timing of the rainfall ends, record the rainfall in each bucket sequentially using the graduated cylinder. Calculate the rainfall intensity of each bucket, the average rainfall intensity of all buckets, and the rainfall uniformity within the effective rainfall area according to the formula. This manual calibration method is cumbersome and involves a large amount of manual work. Therefore, there is an urgent need for a manual simulated rainfall calibration system that can automatically complete the calibration of the target rainfall intensity.
[0025] This utility model provides an artificial simulated rainfall calibration system, such as... Figure 1-4 As shown, the device includes a rain collector 1, an inlet pipe 2, a rainwater storage tank 3, an intermediate pipe 4, a pumping pipe 5, and a rain sensor 6. The input end of the rain collector 1 is used to collect rainwater from simulated rainfall, and the output end of the rain collector 1 is connected to one end of the inlet pipe 2. The other end of the inlet pipe 2 is connected to the output end of the rainwater storage tank 3. The other end of the rainwater storage tank 3 is connected to one end of the intermediate pipe 4, and the other end of the intermediate pipe 4 is connected to the pumping pipe 5, which is used to discharge rainwater from the rainwater storage tank 3. The rain sensor 6 is located on the outside of the rain collector 1 and is configured to detect the amount and intensity of rainfall over a period of time.
[0026] For example, the system includes multiple rain gauges 6. During multiple simulated rainfall events, the system can automatically calculate the calibration parameters of the simulated rainfall and store the data.
[0027] For example, the rain collector 1 adopts a foldable umbrella-shaped structure, the unfolding diameter of which can be manually adjusted to adapt to the needs of different rainfall coverage areas, and the surface is coated with a hydrophobic material to accelerate rainwater diversion and reduce evaporation loss.
[0028] For example, the intermediate pipe 4 is equipped with an electromagnetic regulating valve; the electromagnetic regulating valve is electrically connected to the processor and dynamically controls the rainwater discharge rate by receiving feedback signals from the rainfall intensity calculation module, so as to keep the water level in the temporary storage constant and improve the stability of the flow meter 7 measurement.
[0029] For example, the system integrates a self-calibration unit; the self-calibration unit includes a standard sprinkler array and a calibration controller. The standard sprinkler array can release simulated rainfall of known intensity, and the calibration controller automatically generates error correction coefficients and updates processor algorithm parameters by comparing the measured values of the rain sensor 6 with the standard sprinkler set values.
[0030] In the embodiments of this application, such as Figure 1-4 As shown, it also includes a flow meter 7; the flow meter 7 is disposed on the pumping pipe 5 and is configured to calculate the flow rate of rainwater flowing through the pumping pipe 5 over a period of time.
[0031] For example, flow meter 7 can accurately measure the flow rate of rainwater passing through pumping pipe 5 over a period of time. This data is crucial for evaluating the total amount and rate of simulated rainfall, as well as the calibration accuracy of the entire system. By accurately measuring the rainwater flow rate, it can be ensured that the total amount and intensity of simulated rainfall meet the requirements of the experimental design, thereby improving the accuracy and reliability of the experiment.
[0032] For example, the bottom of the rainwater storage tank 3 is equipped with a filter screen and an anti-sedimentation stirring device; the filter screen is configured to intercept impurity particles in the rainwater, and the anti-sedimentation stirring device includes a micro motor and rotating blades, which are configured to periodically stir the rainwater to prevent sediment deposition from affecting the measurement accuracy of the flow meter 7.
[0033] In the embodiments of this application, such as Figure 1-4 As shown, the rain sensor 6 includes a piezoelectric vibrator, a signal processing circuit, and a processor. The piezoelectric vibrator is configured to convert the vibration signal generated by raindrops hitting the rain collector 1 into an electrical signal. The piezoelectric vibrator is electrically connected to the input terminal of the signal processing circuit, and the output terminal of the signal processing circuit is electrically connected to the processor. The signal processing circuit is configured to process the electrical signal to obtain a DC pulse signal. The processor is configured to convert the peak voltage in the DC pulse signal into the volume of each raindrop and sum the volumes of all raindrops to obtain the rainfall.
[0034] For example, it also includes a remote communication module; the remote communication module is electrically connected to the processor and supports the real-time transmission of rainfall, rainfall intensity data and calibration results to the cloud server via 4G / 5G or LoRa wireless protocols, while receiving external input calibration parameter adjustment instructions.
[0035] For example, the surface of the piezoelectric vibrator is covered with an elastic damping layer; the elastic damping layer is made of polyurethane material and is configured to attenuate high-frequency mechanical noise interference while enhancing the signal-to-noise ratio of low-frequency vibration signals generated by raindrop impacts.
[0036] In the embodiments of this application, such as Figure 1-4 As shown, the signal processing circuit includes a first signal processing circuit and a second signal processing circuit; the signal input terminal of the first signal processing circuit is connected to the piezoelectric vibrator, the signal output terminal of the first signal processing circuit is connected to the processor, and the second signal processing circuit is connected in parallel with the first signal processing circuit; the first signal processing circuit is configured to process the electrical signal to obtain a first DC pulse signal; the second signal processing circuit is configured to process the electrical signal to obtain a second DC pulse signal.
[0037] For example, the vibration signal generated by raindrops hitting the rain collector 1 is converted into an electrical signal by a piezoelectric vibrator. Then, the electrical signal is processed by the first signal processing circuit and the second signal processing circuit to obtain the first DC pulse signal and the second DC pulse signal. Finally, the processor converts the peak voltage in the first DC pulse signal and the second DC pulse signal into the volume of each raindrop, and sums the volumes of all raindrops to obtain the rainfall.
[0038] In the embodiments of this application, such as Figure 1-4 As shown, the processor includes a rainfall measurement module and a rainfall intensity calculation module; the rainfall measurement module is configured to measure the cumulative rainfall within a specified time period; the rainfall intensity calculation module is configured to calculate the instantaneous rainfall intensity within a certain time period based on the recording duration and the accumulated rainfall within the recording duration; the signal output terminals of the first signal processing circuit and the second signal processing circuit are both electrically connected to the rainfall measurement module; the rainfall intensity calculation module is electrically connected to the rainfall measurement module.
[0039] In the embodiments of this application, such as Figure 1-4 As shown, the processor also includes a rainfall intensity conversion and calibration module; the rainfall intensity conversion and calibration module is electrically connected to the rainfall intensity calculation module, and the rainfall intensity conversion and calibration module is configured to convert the simulated rainfall intensity into an equivalent natural rainfall intensity.
[0040] For example, the rainfall and rainfall intensity of artificially simulated rainfall can be calculated through the rainfall measurement module and the rainfall intensity calculation module, and displayed and recorded through the display module 8 and the data storage module. This system can obtain more accurate calibration parameters through the stored data. This application improves the accuracy of artificial rainfall simulation system equipment experiments, reduces the work of multiple manual calibrations, and also reduces the error of manual calibration.
[0041] For example, the rainfall intensity calculation module uses the detected rainfall as a parameter to calculate the corresponding rainfall intensity by calculating the rainfall, detection time, and detection area. The system uses multiple rainfall sensors 6. Increasing the number of rainfall sensors 6 and extending the detection time can further improve the accuracy of the calibration system.
[0042] In the embodiments of this application, such as Figure 1-4 As shown, the processor also includes a data storage module; the data storage module is electrically connected to the rainfall measurement module and the rainfall intensity calculation module, respectively.
[0043] In the embodiments of this application, such as Figure 1-4 As shown, it also includes a display module 8; the display module 8 is electrically connected to the rainfall measurement module, the rainfall intensity calculation module and the rainfall intensity conversion calibration module respectively.
[0044] For example, it also includes a power management module; the power management module is electrically connected to the rain sensor 6, the flow meter 7, the processor and the display module 8, and the power management module is configured to dynamically adjust the power supply mode according to the system operating status in order to extend the battery life of the device in the field environment.
[0045] For example, the display module 8 is a touch screen that integrates a parameter setting interface and real-time data visualization function. It supports displaying the instantaneous rainfall intensity change trend in the form of a curve graph and uses color coding to indicate the confidence level of the calibration results.
[0046] This utility model embodiment provides an artificial simulated rainfall calibration system, the calibration method of which is as follows:
[0047] S1: Open the artificial simulated rainfall calibration system, detect the rainfall of the simulated rainfall through multiple rain sensors 6, and then calculate through the rainfall measurement module to obtain multiple rainfall values;
[0048] S2: The rainfall intensity is calculated separately by the rainfall intensity calculation module to obtain multiple rainfall intensity values;
[0049] S3: Calculate the average rainfall intensity and uniformity using multiple rainfall intensities;
[0050] S4: Record the experimental results and generate electronic reports for easy viewing.
[0051] The various embodiments in this specification are described in a progressive manner. For the same or similar parts between the various embodiments, please refer to each other. Each embodiment focuses on describing the differences from other embodiments.
[0052] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of this application.
Claims
1. An artificial rainfall simulation calibration system, characterized in that, It includes a rain collector (1), an inlet pipe (2), a rainwater storage device (3), an intermediate pipe (4), a pumping pipe (5), and a rain sensor (6). The input end of the rain collector (1) is used to collect rainwater from simulated rainfall, and the output end of the rain collector (1) is connected to one end of the water inlet pipe (2); the other end of the water inlet pipe (2) is connected to the output end of the rainwater storage device (3). The other end of the rainwater storage device (3) is connected to one end of the intermediate pipe (4), and the other end of the intermediate pipe (4) is connected to the pumping pipe (5). The pumping pipe (5) is used to discharge the rainwater in the rainwater storage device (3). The rain sensor (6) is located on the outside of the rain collector (1) and is configured to detect the amount and intensity of rainfall over a period of time.
2. The artificial rainfall simulation calibration system according to claim 1, characterized in that, It also includes a flow meter (7); The flow meter (7) is mounted on the pumping pipe (5) and is configured to calculate the flow rate of rainwater flowing through the pumping pipe (5) over a period of time.
3. The artificial rainfall simulation calibration system according to claim 1, characterized in that, The rain sensor (6) includes a piezoelectric vibrator, a signal processing circuit, and a processor; The piezoelectric vibrator is configured to convert the vibration signal generated by raindrops hitting the rain collector (1) into an electrical signal; The piezoelectric vibrator is electrically connected to the input terminal of the signal processing circuit, and the output terminal of the signal processing circuit is electrically connected to the processor. The signal processing circuit is configured to process the electrical signal to obtain a DC pulse signal; The processor is configured to convert the peak voltage in the DC pulse signal into the volume of each raindrop, and to sum the volumes of all raindrops to obtain the rainfall.
4. The artificial simulated rainfall calibration system according to claim 3, characterized in that, The signal processing circuit includes a first signal processing circuit and a second signal processing circuit; The signal input terminal of the first signal processing circuit is connected to the piezoelectric vibrator, the signal output terminal of the first signal processing circuit is connected to the processor, and the second signal processing circuit is connected in parallel with the first signal processing circuit. The first signal processing circuit is configured to process the electrical signal to obtain a first DC pulse signal; The second signal processing circuit is configured to process the electrical signal to obtain a second DC pulse signal.
5. The artificial rainfall calibration system according to claim 4, characterized in that, The processor includes a rainfall measurement module and a rainfall intensity calculation module; The rainfall measurement module is configured to measure the cumulative rainfall over a specified period of time; The rainfall intensity calculation module is configured to calculate the instantaneous rainfall intensity within a certain time period based on the recording duration and the accumulated rainfall within the recording duration. Both the signal output terminals of the first signal processing circuit and the second signal processing circuit are electrically connected to the rainfall measurement module. The rainfall intensity calculation module is electrically connected to the rainfall measurement module.
6. The artificial rainfall simulation calibration system according to claim 5, characterized in that, The processor also includes a rainfall intensity conversion and calibration module; The rainfall intensity conversion and calibration module is electrically connected to the rainfall intensity calculation module, and the rainfall intensity conversion and calibration module is configured to convert the simulated rainfall intensity into an equivalent natural rainfall intensity.
7. The artificial rainfall calibration system according to claim 5, characterized in that, The processor also includes a data storage module; The data storage module is electrically connected to both the rainfall measurement module and the rainfall intensity calculation module.
8. The artificial rainfall simulation calibration system according to claim 6, characterized in that, It also includes a display module (8); The display module (8) is electrically connected to the rainfall measurement module, the rainfall intensity calculation module and the rainfall intensity conversion calibration module, respectively.