64 results about "Simulated rainfall" patented technology

The invention belongs to the related technical field of waterlogging simulation, and particularly relates to an urban waterlogging simulation device and method based on a digital twin system, and the device comprises the digital twin system, a physical sand table, a sensor, and a microcontroller. The twin system is connected with the physical sand table through a microcontroller and sensors arranged on the physical sand table, and is used for simulating the underground pipe network and surface ponding conditions of the urban target area under the rainfall condition, and regulating and controlling the physical sand table through the microcontroller to realize dynamic verification of the urban inland inundation process; the sensor is used for collecting underground pipe network and surface water accumulation condition data in the physical sand table in real time and transmitting the data back to the twin system, bidirectional interaction and synchronous display of the virtual environment and the physical sand table are achieved, and dynamic simulation and verification of the urban inland inundation process are achieved on the whole. Wherein the twinborn model is composed of a pipe network model, a road model and a building model. According to the invention, real-time mapping and interaction of the physical experiment and the virtual model of the urban drainage system can be realized.

The invention relates to the technical field of permeable material testing, solves the problem that a more complete material selection basis cannot be provided for engineering design in the prior art, and provides a method, a device and equipment for testing the heat dissipation performance of an evaporative cooling material and a storage medium. Acquiring a first mass change value of the to-be-tested sample in the simulated rainfall process; when the instantaneous moisture content meets a preset condition, rainfall simulation is stopped, and a second mass change value of the to-be-tested sample in a preset duration is obtained; placing the to-be-tested sample in the wind tunnel test platform, and obtaining a third mass change value and a surface temperature change value of the to-be-tested sample and an environment temperature change value, a humidity change value and a wind speed change value of the wind tunnel test platform; and obtaining a heat dissipation performance evaluation result of the to-be-tested sample based on the parameters. According to the method, quantitative, comparable and repeatable evaluation of the cooling capacity of the permeable material is realized, and a scientific basis is provided for material performance judgment and application scene selection.

The invention discloses a slope soil erosion prediction method, system, equipment and medium, and relates to the technical field of soil erosion, and the method comprises the following steps: taking slope soil with different grain composition as a research object, and carrying out a rainfall simulation experiment; constructing a production and construction project soil erosion prediction model according to the product of a subrainfall erosivity factor, a soil erodibility factor, a slope length factor, a slope factor and a slope surface area on the basis of the grain composition characteristic particle size; and predicting the soil erosion of the slope surface of the to-be-predicted production and construction project through the production and construction project soil erosion prediction model. According to the model disclosed by the invention, a direct quantitative relationship between the characteristic particle size and the erosion strength is established, so that an acquisition way of the soil erodibility factor is simplified, the dependence of the model on complex and expensive soil physical and chemical parameter analysis is greatly reduced, and the operability and the popularization efficiency of the model in a production field are greatly enhanced.

The invention provides a test model of a soil slope rain wash protection device and a design method, and belongs to the technical field of engineering simulation tests. The test model comprises a test soil slope; each protection test group comprises at least one protection unit, the protection units of different protection test groups are different in at least one of size, number and spacing, each protection unit comprises a protection structure, the protection structure comprises a gabion mesh cage and broken stones located in the gabion mesh cage, and the broken stones are arranged in the gabion mesh cage. The two opposite sides of the protection unit in the width direction are a back plane and a step surface respectively; the pressure sensor group is arranged at the target position of each protection unit; the deformation sensors are arranged on the step surfaces of the protection units; the dust and sand box is arranged on the ground in front of the slope surface of the test soil slope and is used for collecting the amount of muddy water falling from the test soil slope; and the rainfall model is used for simulating a rainfall scene. The slope protection structure meeting the stress requirement can be designed according to a specific soil slope.

The invention belongs to the technical field of clothing performance detection, and discloses a clothing waterproof performance evaluation method and device, electronic equipment and a storage medium, and the method comprises the steps: placing a clothing supporting device wearing a to-be-detected clothing and an evaluation inner shirt in a rainfall simulation device, and adjusting the rainfall parameters of the rainfall simulation device to evaluate the waterproof performance of the to-be-detected clothing; natural rainfall phenomena with different rainfall intensities are simulated, and water seepage scores of the to-be-detected clothes under the natural rainfall phenomena with the different rainfall intensities are determined according to the water seepage conditions of the evaluation underwear and the to-be-detected clothes under the natural rainfall phenomena with the different rainfall intensities. By simulating a real wearing scene and a variable rainfall environment, the water seepage score is determined according to the water seepage conditions of the evaluation underwear and the to-be-tested garment, so that the waterproof performance of the garment is evaluated, and the evaluation efficiency of the waterproof performance of the garment is improved.

The invention relates to a modeling method and system for a rainwater collection system based on gamma distribution and computer equipment. The method comprises the following steps: based on rainfall parameters including rainfall depth, rainfall duration and non-rainfall duration, simulating rainfall characteristics, and constructing a rainfall characteristic probability density function based on gamma distribution; simulating the runoff collected in the rainfall period to obtain the water amount of the runoff intercepted by the roof; simulating the residual water volume to obtain the range of the residual water volume when the rainfall cycle starts; simulating overflow based on the residual water quantity to obtain overflow; the probability density function, the water amount intercepted by the roof and overflow are synthesized, and water-saving and waterlogging-reducing efficiency parameters are constructed. By adopting the method, random rainfall characteristics can be simulated with high precision, and the method has the characteristic of few occupied computing resources.

The test device comprises a supporting frame and a test cylinder installed at the upper end of the supporting frame, a permeable base plate is detachably connected to the position, close to an opening in the lower end of the test cylinder, of the inner wall of the test cylinder, and a multi-stage inverted filter layer is detachably connected to the upper end of the permeable base plate; a plurality of monitoring assemblies and thermocouples are arranged on the inner wall of the test cylinder, a lower end opening of the test cylinder is communicated with a liquid guide hopper in a matched mode, a negative pressure regulation and control assembly is arranged on one side of the supporting frame, a water spraying assembly is detachably connected to the upper end of the outer wall of the test cylinder, a liquid supply assembly is arranged on the other side of the supporting frame, and a micropore injection and infiltration assembly is arranged on one side of the water spraying assembly. A plurality of guide grooves are formed in the inner wall of the test cylinder, the outer wall of the test cylinder is wrapped with a temperature control assembly, and a control cabinet is installed on one side of the upper end of the supporting frame. According to the invention, the unsaturated infiltration process under complex natural conditions such as rainfall and underground water level change can be simulated, slurry can be uniformly distributed in a soil body, and the discreteness of a mineralization effect is reduced.

The present application belongs to the technical field of soil centrifuge simulation rainfall test, and discloses a rainfall device for improved centrifugal model rainfall test. The rainfall device comprises a centrifugal box, a rainfall module and a fixing module. The rainfall module is arranged above the centrifugal box to simulate rainfall, and the fixing module is used for fixing the rainfall module above the centrifugal box. The rainfall module comprises a water source, an atomizer water pump and a water outlet unit connected by a water delivery pipe in sequence. The atomizer water pump is used for providing atomized water pressure in the water delivery pipe. The water outlet unit comprises a U-shaped water delivery pipe and a nozzle. The height of the inner wall of the top of the water inlet pipe of the U-shaped water delivery pipe is lower than the height of the inner wall of the bottom of the water outlet pipe, so as to prevent the water in the U-shaped pipe from overflowing to form a cavity. Through the present application, the problems of nozzle leakage, cavity in the pipe, rainfall delay and uneven distribution of rainfall on the surface of the soil under the combined action of gravity, Coriolis force and centrifugal force are solved.

The invention relates to the technical field of slope engineering, and discloses a soil slope partition rainfall test device, a test box comprises a box body and a slope model, the slope model comprises a plurality of rainfall simulation areas, the bottom of a rain baffle is separated from the slope model, and a rainfall spraying mechanism comprises a water conveying pipe and a pressure nozzle. The rainfall simulation area located in the non-rainfall area is covered with a waterproof film, and a waterproof film is installed at the junction between the rainfall simulation area located in the non-rainfall area and the rainfall simulation area located in the rainfall area; the invention further discloses a test method of the soil slope partition rainfall test device. Test preparation; rainfall simulation: selecting a rainfall simulation area, covering a waterproof film and installing a rainproof plate; collecting data; according to the invention, the rainfall range of each region is effectively controlled, and precise simulation of local soil saturation, shear strength reduction and local failure mechanism of the slope under the rainfall condition is realized.

The utility model discloses an artificial simulated rainfall calibration system which comprises a rainwater collector, a water inlet connecting pipe, a rainwater temporary storage device, a middle connecting pipe, a water pumping connecting pipe and a rainfall sensor. The input end of the rainwater collector is used for collecting rainwater simulating rainfall, and the output end of the rainwater collector is connected with one end of the water inlet connecting pipe; the other end of the water inlet connecting pipe is connected with the output end of the rainwater temporary storage device; the other end of the rainwater temporary storage device is connected with one end of the middle connecting pipe, the other end of the middle connecting pipe is connected with the water pumping connecting pipe, and the water pumping connecting pipe is used for draining rainwater in the rainwater temporary storage device; the rainfall sensor is arranged on the outer side of the rain collector and is configured to detect rainfall and rainfall intensity within a period of time. The method is high in repeatability, can accurately measure and calibrate the rainfall amount and the rainfall intensity of artificial simulation rainfall, and reduces the labor burden.

The present application relates to the technical field of distance measurement, and particularly relates to a rain-shielded target terahertz one-dimensional range image measuring device. The device comprises a rain channel, a terahertz radar, a target and a rotary table. The rain channel is an equal cross-section channel with a rectangular cross section, and the rain channel is provided with multiple rain devices. Each rain device comprises multiple spray heads arranged at intervals on the top of the rain channel, and the rain devices are connected in parallel and controlled separately. The terahertz radar is arranged outside the front end of the rain channel and on the central extension line of the front end surface. The target is arranged outside the rear end of the rain channel and on the central extension line of the rear end surface, and the target is placed on the rotary table and rotates with the rotary table. The distance between the terahertz radar and the target satisfies that the radar beam of the terahertz radar does not interfere with the rain channel and completely covers the target. The working condition of the terahertz radar in the rain environment can be effectively simulated, and the one-dimensional range image of the target under the rain curtain shielding can be obtained by using the terahertz radar.

The utility model discloses a simulation test device for an anti-icing coating of a locomotive bogie, which belongs to the technical field of anti-icing simulation test devices and comprises a movable base, a water tank, refrigeration equipment and a filter plate, a test box is arranged on the upper surface of the movable base, and the filter plate is horizontally fixed in the test box. The test box has the advantages that by arranging the water tank, the water pump, the water spraying disc and the refrigeration equipment, water in the water tank can be pumped out through the water outlet pipe and the water guide pipe by controlling operation of the water pump, the water can be evenly sprayed into the test area through the water spraying disc, and therefore the rainfall environment is simulated in the test area; and meanwhile, the refrigeration equipment provides cooling and refrigeration effects in the test area and simulates a low-temperature environment, so that a low-temperature rainfall environment is simulated for the locomotive bogie placed in the test box, the anti-icing and anti-freezing effects of the anti-icing coating of the locomotive bogie are conveniently tested, the automatic simulation test of the anti-icing coating of the locomotive bogie is realized, and the operation is relatively simple.

The application is suitable for the technical field of urban planning management, and provides a city planning method, device, storage medium and system, which comprises the following steps: acquiring topographic data and drainage capacity data of a target area; constructing a waterlogging depth dynamic evaluation model of the target area based on the topographic data and the drainage capacity data; inputting a preset simulated rainfall scenario into the model to obtain waterlogging depth change trend information of the target area over time; acquiring flood control grade requirements; and optimizing a to-be-tested building flood control parameter of the target area according to the change trend information until the flood control level of the to-be-tested building reaches the preset flood control grade requirements. The model can directly output a water depth-time corresponding curve, can convert an abstract flood control grade into a quantifiable control index, and can further obtain lowest entrance elevation, baffle height and lowest point elevation data under different rainfall amounts, so that the method is more accurate and reliable.

This invention discloses a method and system for denoising point clouds on slopes under dynamic rainfall conditions, applicable to denoising terrain scan data under dynamic rainfall environments. The method classifies point cloud data according to the rainfall process, removes raindrop noise using an adaptive threshold method based on the distance from raindrops to the slope, removes equipment noise using DBSCAN clustering, and finally optimizes the retained points using bilateral filtering with cosine weighted by the angle between the normal vectors and moving least squares. The method removes noise from the point cloud using different methods based on the noise type of the rainfall process, outputting the final denoised point cloud data. This invention classifies and extracts noise from point clouds based on the physical characteristics of simulated rainfall on slopes, achieving excellent removal effects for multi-scale environmental noise. Furthermore, by introducing normal vector feature weights, it preserves the boundary details of slope gully erosion development to the fullest extent, meeting the needs of high-precision hydrological analysis for soil and water conservation.

The invention relates to the technical field of landslide experiments, in particular to a landslide experiment device capable of simulating rainfall conditions. According to the landslide experiment device capable of simulating the rainfall condition, the rainfall condition is subjected to various simulations, so that a more sufficient rainfall experiment can be carried out on landslide, and the experiment effect is better. The landslide experiment device capable of simulating the rainfall condition comprises supporting legs, and the bottoms of the two supporting legs are each provided with an anti-skid pad; the water tank is arranged between the top ends of the two supporting legs; and the rainfall simulation mechanism is arranged on the water tank. Clear water is evenly sprayed to the hillside simulation soil blocks through the multiple spraying holes in the spraying pipe, the rainfall condition on the hillside is simulated, the hillside simulation soil blocks can have landslide after rainfall, and therefore the rainfall simulation experiment is conducted on the landslide.

The invention discloses a model test device and test method for simulating pavement collapse caused by rainfall infiltration, and the device comprises a bearing module, a rainfall regulation and control module, a particle collection module and a parameter monitoring module, so as to guarantee the operability and accuracy of the test. Wherein the rainfall regulation and control module controls the rainfall flow through a booster pump, a water inlet valve and a flow meter so as to trigger piping; the particle collecting module collects lost particles in a layered mode according to the depth, and the loss rule of the particles with different depths and particle sizes can be accurately analyzed by combining dyeing treatment on foundation soil particles in advance. The device is simple in structure and convenient to operate, the whole process that rainfall infiltration causes piping and causes pavement collapse can be effectively simulated, and the device can be used for researching the piping mechanism and the reinforcing effect of the reinforced embankment by laying the reinforced bodies at different heights of the embankment.

The invention discloses an elastic power distribution network planning method and digital system considering wind and rain microtopography coupling, and relates to the technical field of power system disaster prevention and planning, and the method comprises the steps: constructing a typhoon wind field model considering microtopography correction, recognizing ridge features based on a ridge recognition algorithm, and outputting a wind speed acceleration ratio; simulating spatial and temporal distribution of rainfall in combination with a corrected wind field and a terrain uplift effect, constructing a two-dimensional hydrodynamic rainfall flood waterlogging model, and outputting a ponding evolution process of each grid region; a combined failure model and a node failure probability function are constructed for an overhead line, an underground cable and power distribution node equipment, a typical disaster scene is generated and reduced after fusion, and a two-stage mixed integer stochastic programming model is constructed; and solving the two-stage mixed integer stochastic programming model by adopting an improved dual decomposition algorithm, and solving dual gap global optimum by combining branch and bound processing. According to the method, the expected power failure loss under the extreme event is reduced, and the toughness support under the extreme environment is improved.

This invention discloses a micro-topography reconfigurable runoff and interflow path separation simulation soil box, belonging to the technical field of hydrological simulation experimental equipment. It includes: a soil box and a smart base plate disposed at the bottom of the soil box; multiple micro-topography modules, arranged according to a preset field topography and installed on top of the smart base plate; and a controller electrically connected to the smart base plate, configured to perform the following steps: acquiring a three-dimensional model of the soil box composed of multiple grid cells under the preset micro-topography arrangement, and a sample particle trajectory dataset collected through M repeated simulated rainfall experiments, including the final outlets identified as runoff outlets and interflow outlets. This invention effectively distinguishes between deterministic and uncertain regions by quantifying the water flow path uncertainty of each grid cell, achieving adaptive optimization of topography control and solving the problem that traditional devices rely on human experience and cannot guarantee optimization results.

The invention relates to the technical field of geotechnical engineering, and discloses an experimental device and an experimental system for simulating slope instability. The experimental device comprises a transparent shell, a tamped simulation medium is arranged in the transparent shell, and the simulation medium comprises a slope top part, a slope surface part and a slope foot part; a spray head is arranged above the simulation medium, and the spray range of the spray head covers the slope top part, the slope surface part and the slope foot part; a strip-shaped groove with a preset size is formed in the slope top part, the slope surface part or the slope foot part from top to bottom, and the strip-shaped groove is used for simulating a dominant channel; a camera device is arranged on one side of the transparent shell, corresponds to the dominant channel in position and is used for recording the change of the simulation medium near the dominant channel; by arranging the strip-shaped groove, the physical characteristics of a dominant channel in an actual side slope can be simulated, the rainfall process and the rainwater permeation process are dynamically simulated in combination with the spray head, and the change of a simulation medium near the dominant channel is captured in real time in cooperation with the camera device.

The present application relates to a short-term rainfall prediction method and system based on ConvLSTM, which solves the technical problem that the timeliness and accuracy of existing short-term rainfall prediction methods cannot be guaranteed. The method comprises: preprocessing and gridding historical meteorological data to form meteorological grid data; performing feature standardization and sample balancing processing on the meteorological grid data to form a data set; training a ConvLSTM model through the sample data set to form a short-term rainfall prediction model and perform rainfall prediction; and performing closed-loop optimization of the model according to the evaluation results of the short-term rainfall prediction. The method can directly use gridded data as input, learn the spatio-temporal evolution law in historical data through model learning, and strengthen the perception of rainfall events. A technical chain of data preprocessing-gridding interpolation-model training-rainfall prediction-result evaluation is formed, which enables the model to better simulate the physical process of rainfall formation, ensures high-precision and high-timeliness short-term rainfall prediction, and reduces prediction errors.

This invention provides a rainfall simulation device for hydropower station reservoir bank slope erosion testing, relating to landslide disaster testing. It includes a support base, a water spray assembly, an adjustment drive assembly, and an angle adjustment assembly. The water spray assembly includes a fixed frame and a main water tank mounted on the fixed frame. A fixed ring is rotatably connected to the lower end of the fixed frame, allowing the frame to rotate around a horizontal axis. The fixed ring is rotatably connected to the support base, allowing it to rotate around a vertical axis. The adjustment drive assembly includes a first motor, a pitching mechanism, and a rotating mechanism. The angle adjustment assembly drives the main water tank to swing. The beneficial effects of this invention are: it can more closely approximate the effect of real rainfall, reducing the deviation between simulated rainfall and the characteristics of real natural rainfall, restoring the simulation of the slope erosion effect caused by real rainfall, and providing reliable experimental data support for the erosion protection design of reservoir bank slopes.

The invention discloses a rainfall simulation device for testing an automobile combined driving assistance system, which comprises a test square and at least one rainfall module device, an annular point distribution substrate is fixed on the test square, and each rainfall module device is mounted on the annular point distribution substrate; each rainfall module device comprises a lifting mechanism, a rainfall mechanism and an adjusting mechanism, and the rainfall mechanism is mounted on the lifting mechanism and used for watering to simulate a rainfall environment; the lifting mechanism is installed on the annular point distribution base plate and used for driving the rainfall mechanism to ascend and descend. The adjusting mechanism is mounted on the rainfall mechanism and is used for adjusting the water flow of the rainfall mechanism so as to adjust the water sprinkling amount, so that different rainfall environments are simulated; through the multiple rainfall module devices, water can be controllably sprinkled in the area of the annular point distribution base plate to simulate a real rainfall natural scene, large-range and high-uniformity rainfall is achieved, the flexibility is high, the modes are diversified, the performance of the system under various rainfall conditions can be comprehensively and accurately evaluated, and the reliability and the confidence coefficient are high.

The invention relates to the technical field of tunnel excavation simulation, and discloses a multi-working-condition on-demand switching tunnel excavation simulation test device and method.The device comprises a model box used for containing and molding a test soil body, and the side wall of the model box is provided with an excavation window with an opening and closing door; the multifunctional vibration table is arranged below the model box and is used for applying a vibration load for simulating an earthquake action to the model box; the spraying device is arranged at the top of the model box and is used for simulating rainfall to a soil body in the model box; the condensing device is arranged around the model box and is used for cooling a soil body in the model box so as to simulate a frozen soil environment; the full-automatic remote intelligent control system is in signal connection with the multifunctional vibration table, the spraying device and the condensing device, the complex scene with the multi-factor coupling effect in actual engineering can be reproduced in a highly realistic mode, high test efficiency is provided for scheme optimization and risk assessment, and the test efficiency is improved. Mechanism research of tunnel engineering under complex geological conditions is realized, and an accurate physical simulation experiment platform is realized.

The present application relates to the technical field of water permeable material testing, solves the problem that the prior art cannot provide more complete material selection basis for engineering design, and provides an evaporative cooling material heat dissipation performance testing method, device, equipment and storage medium, simulates rainfall on the to-be-tested sample through a rainfall device, obtains a first mass change value of the to-be-tested sample in the simulated rainfall process; when the instantaneous water content meets the preset condition, the simulated rainfall is stopped, and a second mass change value of the to-be-tested sample in a preset time length is obtained; the to-be-tested sample is placed in a wind tunnel test platform, and a third mass change value and a surface temperature change value of the to-be-tested sample, an environmental temperature change value, a humidity change value and a wind speed change value of the wind tunnel test platform are obtained; and a heat dissipation performance evaluation result of the to-be-tested sample is obtained based on the above parameters. The present application realizes quantitative, comparable and repeatable evaluation of the cooling capacity of water permeable materials, and provides a scientific basis for material performance determination and application scenario selection.

This invention relates to a method and apparatus for assessing the realism of raindrop distribution in simulated rainfall at a site. The method includes: collecting microscopic data of real rainfall at various levels; calculating average raindrop distribution matrices for different levels based on the microscopic data of real rainfall, using them as an evaluation benchmark; collecting microscopic data of simulated rainfall at the site and calculating the raindrop distribution matrix of the simulated rainfall; calculating the similarity between the raindrop distribution matrix of the simulated rainfall and the average raindrop distribution matrices for each level, thereby determining the realism assessment result of the simulated rainfall at the site. Compared with the prior art, this invention starts from the level of the microscopic raindrop distribution matrix of rainfall, constructs an evaluation benchmark based on the raindrop distribution matrix of real rainfall samples, and achieves a quantitative assessment of the realism of raindrop distribution in simulated rainfall by quantifying the similarity between simulated rainfall samples and the evaluation benchmark.

The application provides a tailing physical field migration test platform and a test method. The tailing physical field migration test platform comprises a tailing model, a gas permeability simulation structure, a simulated rainfall structure, a detection assembly and a processor. The gas permeability simulation structure is connected with the tailing model and is used for adjusting the gas pressure state in the tailing model. The simulated rainfall structure is communicated with the tailing model and is used for applying simulated rainfall to the tailing model, so that a coupling test environment of simulated rainfall and different gas pressure states can be applied to the tailing model through cooperation of the simulated rainfall structure and the gas permeability simulation structure. The detection assembly is configured to detect actual values of force physical field parameters of the tailing model. The processor is electrically connected with the detection assembly and is configured to receive the actual values and analyze and obtain force physical field change rules of the tailing model under coupling of different gas pressure states and simulated rainfall, so that accurate test results can be obtained, and long-term stable operation of the tailing can be ensured.

The utility model belongs to the field of geotechnical and water conservancy and hydropower engineering test equipment, especially relates to a simulation test platform that simulates the deformation and failure of reservoir excavation slope under the action of simulated rainfall, which comprises a model box, an excavation simulation system, a rainfall simulation system, a monitoring system, a water and soil recycling system and a control and display system, a frame and a geotechnological layer are installed in the model box, the frame comprises a frame panel and a frame support, one end of the frame support is rotatably connected with one end of the frame panel, the other end of the frame support is connected with the bottom end of the inner wall of the model box, the other end of the frame panel is rotatably connected with the bottom end of the model box, and the geotechnological layer is located above the frame panel, the utility model can accurately simulate the coupling conditions of excavation and rainfall, and through adjustable slope, diversified monitoring means and flexible operation design, dynamic observation of the deformation and failure of the slope under complex geological conditions is realized, a highly simulated test platform for the stability research of reservoir slope is provided, and the utility model has the advantages of accurate working condition simulation, comprehensive monitoring and wide application.

The invention discloses an integrated rainfall simulation and runoff collection device which comprises a box body, a controller, and a water feeding mechanism, a rainfall mechanism, a lifting mechanism, a test tank and a runoff monitoring mechanism which are arranged in the box body, the runoff monitoring mechanism comprises a runoff collecting barrel, a connecting hose, a damping support, an ultrasonic sensor and a weighing sensor, the damping support is arranged on one side of the box body, the weighing sensor and the runoff collecting barrel are both arranged on the damping support, and the weighing sensor is used for collecting runoff weight data in the runoff collecting barrel; a water outlet is formed in one end, close to the damping bracket, of the test tank, and the other end of the connecting hose is communicated with the water outlet; the ultrasonic sensor is arranged at the water inlet and used for collecting runoff liquid level data in the runoff collecting barrel. According to the technical scheme, unified control is achieved through the controller, only corresponding parameters need to be adjusted during use, and tedious debugging of all devices is not needed.

The invention provides a rainfall prediction method considering rainfall transition characteristics, which fully excavates the time sequence information amount of an atmospheric factor on the basis of directly constructing a large-scale meteorological circulation factor and actually measured rainfall sequence relation by a traditional machine learning algorithm, and emphatically considers the time period rainfall state and rainfall characteristic attributes of actually measured rainfall in the existing region. The method overcomes the defect that an original machine learning algorithm for simulating the rainfall state and a rainfall method is poor in performance in the aspect of reproducing small-scale rainfall state characteristics and rainfall extreme values, and enables simulation results to show time-varying characteristics of atmospheric elements under the background of climate change, and to also represent time-varying characteristics of the atmospheric elements under the background of climate change. And indexes which specifically reflect small-area rainfall characteristics, such as rainfall rate, rainfall continuous state, rainfall mean value, extreme value, time period change process and the like, are more accurate, so that a simulation result is more in line with small-scale long-time-period rainfall change conditions under climate change.

The utility model provides an oscillatory artificial rainfall simulation device which comprises a support frame, an oscillating device and an oscillating device, the output end of the linear driver is arranged in the length direction of the supporting frame; a transmission rod; the at least one group of connecting components are connected to the transmission rod; the spray head limiting blocks are fixed to the supporting frame and correspond to the moving pieces one to one, and a water return opening is further formed in one side of the bottom of each spray head limiting block; the rainfall spray head is inserted into the spray head limiting block and hinged to the spray head limiting block, and the rainfall spray head is hinged to the connecting assembly through a spray head fixing clamp; a water storage tank; a return water collecting pipe; a water return branch pipe; a water supply branch pipe; a water supply pump, a pressure gauge and a water pressure regulator; a water supply flow regulating valve; and a water return valve. According to the utility model, the rainfall spray head is driven by the linear driver to realize oscillatory swing so as to simulate rainfall.