Raindrop spectrometer calibration method and related apparatus

Abstract

The application provides a raindrop spectrometer correction method and related device, and relates to the meteorological measurement technical field.In the method, the electronic device measures the falling speed of raindrops of different sizes by using an optical raindrop spectrometer, and calculates a speed compensation coefficient according to the actual falling speed and the theoretical speed of the raindrops.In addition, for each preset rainfall intensity, a concentration correction coefficient sequence of various raindrops under the intensity is obtained, and the sequence is sorted by size.Then, a large sample data set is constructed, and the median of the sorting result of each raindrop correction coefficient in the data set is iteratively trained multiple times, and the obtained concentration correction coefficient is used as a target concentration correction coefficient.In this way, the speed compensation coefficient and the target concentration correction coefficient obtained by calculation improve the measurement accuracy of the optical raindrop spectrometer on the speed and concentration of raindrops.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of meteorological measurement, in particular to a raindrop spectrometer correction method and related device. BACKGROUND

[0002] Drop Size Distribution (DSD), as a core indicator for evaluating the microstructure of precipitation, describes the number distribution of different equivalent volume diameter raindrops in a specific volume of air in detail. This parameter is crucial for a deep understanding of the microphysical processes of precipitation, including but not limited to the mechanisms of cloud generation, development and dissipation, and how they ultimately affect the intensity and raindrop size distribution characteristics of surface precipitation. The complex dynamics of precipitation, including raindrop growth, evaporation, collision and splitting, collectively contribute to the unique features of surface precipitation patterns.

[0003] Currently, advanced optical rain spectrometers, such as OTT Parsivel raindrop spectrometer, can accurately measure and analyze the microstructure of precipitation, including key parameters such as raindrop size, speed and distribution density. Based on infrared laser principles, the instrument monitors the change in laser intensity when precipitation particles pass through the measurement area by vertically emitting a thin and wide infrared laser beam. The DSP (Digital Signal Processing System) calculates the size, movement speed and type of particles based on the change in laser intensity. When precipitation particles pass through the emitted horizontal laser beam, the laser intensity will weaken due to the scattering effect of raindrops, causing a corresponding adjustment in the output voltage. By measuring the light intensity attenuation information, the diameter of the precipitation particles can be calculated; and based on the duration of the electronic signal, the falling speed of the particles can be inferred.

[0004] However, in practice, it is found that optical rain spectrometers usually assume that precipitation particles exist in liquid form and that the principal axis of the raindrops is horizontal. This simplifying assumption can have a significant deviation when measuring the concentration of raindrops, especially under high rainfall conditions, which can result in significant errors. The existence of such errors not only affects the accurate analysis of the microstructure of precipitation, but also may adversely affect the study of precipitation processes, thereby limiting the comprehensive understanding of complex precipitation phenomena. SUMMARY

[0005] In order to overcome at least one deficiency in the prior art, the present application provides a raindrop spectrometer correction method and related device, specifically including:

[0006] In a first aspect, the present application provides a raindrop spectrometer correction method, the method comprising:

[0007] measuring the falling speed of a plurality of raindrops by an optical rain spectrometer, wherein the plurality of raindrops respectively have different sizes;

[0008] For each of the raindrops, a velocity compensation factor of the raindrop is obtained according to a falling velocity of the raindrop and a theoretical velocity of the raindrop, wherein the velocity compensation factor is used to compensate the falling velocity of the raindrops of the same size measured by the optical raindrop spectrometer.

[0009] With reference to the optional implementation of the first aspect, the falling velocities of the plurality of raindrops are measured by the optical raindrop spectrometer, including:

[0010] The plurality of measured falling velocities of each of the raindrops are measured by the optical raindrop spectrometer;

[0011] The average velocity of each of the raindrops is obtained according to the plurality of measured falling velocities of each of the raindrops, respectively;

[0012] The average velocity of each of the raindrops is taken as the falling velocity of the raindrop, respectively.

[0013] With reference to the optional implementation of the first aspect, the relationship between the size and the theoretical velocity of each of the raindrops is:

[0014] v(D) = -0.1021 + 4.932D - 0.9551D 2 + 0.079D 3 - 0.002D 4

[0015] In the formula, D represents the diameter of each of the raindrops, and v(D) represents the theoretical velocity corresponding to the diameter D.

[0016] With reference to the optional implementation of the first aspect, the method further includes:

[0017] For each of the preset rainfall intensities, a concentration correction factor sequence of each of the raindrops under the rainfall intensity is obtained, wherein the concentration correction factor sequence includes a plurality of concentration correction factors;

[0018] The concentration correction factor sequence is sorted according to the size to obtain a sorting result of the concentration correction factor sequence;

[0019] The target concentration correction factor of each of the raindrops is selected from the middle position of the sorting result of each of the raindrops, respectively.

[0020] With reference to the optional implementation of the first aspect, the plurality of concentration correction factors are obtained from different time steps, respectively, and the obtaining of the concentration correction factor sequence of each of the raindrops under the rainfall intensity includes:

[0021] For each of the time steps, the measured raindrop concentration and the reference raindrop concentration of each of the raindrops in the time step under the rainfall intensity are measured by the raindrop spectrometer;

[0022] The concentration correction factor of each raindrop in the time step is obtained according to the measured raindrop concentration and the reference raindrop concentration of each raindrop in the time step.

[0023] According to the optional implementation of the first aspect, the concentration correction factor of each raindrop in the time step is the ratio between the measured raindrop concentration and the reference raindrop concentration of each raindrop in the time step.

[0024] In a second aspect, the present application further provides a raindrop spectrometer correction device, which comprises:

[0025] The data acquisition module is configured to measure the falling speeds of a plurality of raindrops by the optical raindrop spectrometer, wherein the plurality of raindrops have different sizes respectively.

[0026] The data correction module is configured to, for each raindrop, obtain a speed compensation factor of the raindrop according to the falling speed of the raindrop and the theoretical speed of the raindrop, wherein the speed compensation factor is used to compensate the falling speed of the raindrop of the same size measured by the optical raindrop spectrometer.

[0027] According to the optional implementation of the second aspect, the data acquisition module is further configured to:

[0028] measure a plurality of measured falling speeds of each raindrop by the optical raindrop spectrometer;

[0029] obtain an average speed of each raindrop according to the plurality of measured falling speeds of the raindrop respectively;

[0030] respectively take the average speed of each raindrop as the falling speed of the raindrop.

[0031] According to the optional implementation of the second aspect, the relationship between the size and the theoretical speed of each raindrop is:

[0032] v(D) = -0.1021 + 4.932D - 0.9551D 2 + 0.079D 3 - 0.002D 4

[0033] wherein D represents the diameter of each raindrop, and v(D) represents the theoretical speed corresponding to the diameter D.

[0034] According to the optional implementation of the second aspect, the data acquisition module is further configured to:

[0035] for each preset rainfall intensity, obtain a concentration correction factor sequence of each raindrop under the rainfall intensity, wherein the concentration correction factor sequence comprises a plurality of concentration correction factors;

[0036] The data correction module is further configured to sort the concentration correction coefficient sequence according to the size to obtain a sorting result of the concentration correction coefficient sequence.

[0037] The target concentration correction coefficient of each kind of raindrop is selected from a middle position of the sorting result of each kind of raindrop.

[0038] In combination with the optional implementation of the second aspect, the plurality of concentration correction coefficients are respectively obtained from different time steps, and the data acquisition module is further configured to:

[0039] For each time step, the measured raindrop concentration and the reference raindrop concentration of each kind of raindrop within the time step are measured by the raindrop spectrometer under the rainfall intensity.

[0040] The concentration correction coefficient of each kind of raindrop within the time step is obtained according to the measured raindrop concentration and the reference raindrop concentration of each kind of raindrop within the time step.

[0041] In combination with the optional implementation of the second aspect, the concentration correction coefficient of each kind of raindrop within the time step is a ratio between the measured raindrop concentration and the reference raindrop concentration of each kind of raindrop within the time step.

[0042] In a third aspect, the present application further provides a storage medium, which stores a computer program, and the computer program is executed by a processor to implement the raindrop spectrometer correction method.

[0043] In a fourth aspect, the present application further provides an electronic device, which comprises a processor and a memory, and the memory stores a computer program, and the computer program is executed by the processor to implement the raindrop spectrometer correction method.

[0044] In a fifth aspect, the present application further provides program instructions, which are executed by a processor to implement the raindrop spectrometer correction method.

[0045] Compared with the prior art, the present application has the following beneficial effects:

[0046] The application provides a raindrop spectrometer correction method and related device. In the method, the electronic device measures the falling speed of raindrops of different sizes using an optical raindrop spectrometer, and calculates a speed compensation coefficient according to the actual falling speed and the theoretical speed of the raindrops. In addition, for each preset rainfall intensity, a concentration correction coefficient sequence of various raindrops under the intensity is obtained and sorted by size. Then, a large sample data set is constructed, and the median of the concentration correction coefficient sorting result of each raindrop in the data set is iteratively trained multiple times, and the obtained concentration correction coefficient is used as a target concentration correction coefficient. In this way, the speed compensation coefficient and the target concentration correction coefficient obtained by calculation improve the measurement accuracy of the optical raindrop spectrometer for raindrop speed and concentration. BRIEF DESCRIPTION OF DRAWINGS

[0047] In order to more clearly illustrate the technical solutions of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some of the embodiments of the application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0048] Figure 1 One of the flowcharts of the raindrop spectrometer correction method provided by the embodiments of the application;

[0049] Figure 2A The schematic diagram before speed correction provided by the embodiments of the application;

[0050] Figure 2B The schematic diagram after speed correction provided by the embodiments of the application;

[0051] Figure 3 The second flowchart of the raindrop spectrometer correction method provided by the embodiments of the application;

[0052] Figure 4 The structural schematic diagram of the raindrop spectrometer correction device provided by the embodiments of the application;

[0053] Figure 5 The structural schematic diagram of the electronic device provided by the embodiments of the application. DETAILED DESCRIPTION

[0054] In order to make the purpose, technical solutions and advantages of the embodiments of the application more clear, the technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are some of the embodiments of the application, not all the embodiments. The components of the embodiments of the application described and shown in the drawings here can be arranged and designed in various different configurations.

[0055] Therefore, the following detailed description of embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the application as claimed, but merely represents selected embodiments of the application. Based upon the embodiments of the application, all other embodiments that would be obtained by one of ordinary skill in the art without having to make inventive efforts, are within the scope of protection of the application.

[0056] It should be noted that similar reference numbers and letters refer to similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0057] In the description of the application, it should be noted that the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In addition, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, method, article or device. Without more limitations, the element defined by the statement "including a" does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0058] Based on the above statement, as introduced in the background, the optical raindrop spectrometer generally assumes that the precipitation particles exist in liquid form and the principal axis direction of the raindrops is horizontal, which will have a great deviation in measuring the concentration of the raindrops, and will have a significant error especially in high rainfall conditions. Therefore, there is an urgent need for an effective method to correct the raindrop spectrum measured by the optical raindrop spectrometer.

[0059] Based on the discovery of the above technical problems, the inventors propose the following technical solutions to solve or improve the above problems after creative efforts. It should be noted that the defects of the above prior art solutions are the result of the inventors' careful research and practice, and therefore, the discovery process of the above problems and the solutions proposed by the embodiments of the application to solve the above problems should be the contribution of the inventors to the application during the invention and creation process, and should not be understood as technical content known to those skilled in the art.

[0060] In view of this, the embodiment provides a raindrop spectrometer correction method. In the method, an electronic device measures falling speeds of multiple raindrops by an optical rain spectrometer, wherein the multiple raindrops respectively have different sizes; for each raindrop, a speed compensation coefficient of the raindrop is obtained according to the falling speed of the raindrop and a theoretical speed of the raindrop, wherein the speed compensation coefficient is used to compensate the falling speed of the raindrop of the same size measured by the optical rain spectrometer. In this way, the speed compensation coefficient obtained by calculation improves the measurement accuracy of the optical rain spectrometer on the speed of the raindrop.

[0061] It should be noted that the electronic device implementing the raindrop spectrometer correction method can be, but is not limited to, a mobile terminal, a tablet computer, a laptop computer, a desktop computer, a server, and the like. Among them, the server can be a single server, or a server group. The server group can be centralized or distributed (for example, the server can be a distributed system). In some embodiments, the server can be local or remote relative to the user terminal. In some embodiments, the server can be implemented on a cloud platform; for example only, the cloud platform can include a private cloud, a public cloud, a hybrid cloud, a community cloud (Community Cloud), a distributed cloud, an inter-cloud (Inter-Cloud), a multi-cloud (Multi-Cloud), and the like, or any combination thereof. In some embodiments, the server can be implemented on an electronic device with one or more components.

[0062] To make the scheme provided by the embodiment more clear, it is assumed below that the electronic device implementing the method is a desktop computer, and the method is described in combination with Figure 1 The various steps of the method are described in detail. However, it should be understood that the operations of the flowchart can not be implemented in order, and the steps without logical context relationship can be reversed in order or implemented simultaneously. In addition, one or more other operations can be added to the flowchart or one or more operations can be removed from the flowchart under the guidance of the content of the present application. For example, Figure 1 As shown, the method includes:

[0063] S1, measuring falling speeds of multiple raindrops by an optical rain spectrometer.

[0064] Among them, the multiple raindrops respectively have different sizes. For this, it should be understood that the falling speed of the raindrop is related to the size of the raindrop, and the embodiment measures the size of the raindrop by the diameter of the raindrop, so the embodiment classifies the raindrops measured by the optical rain spectrometer by the diameter. In view of the fact that there is a certain accidental error in the measured falling speed of a single raindrop for each raindrop, the embodiment further provides the following optional implementation of step S1:

[0065] S1-1, measuring multiple measured falling speeds of each raindrop by the optical rain spectrometer.

[0066] It should be noted that the above measured fall speeds are the results after filtering the original fall speeds. Speeds that meet any of the following conditions will be filtered out:

[0067] (1) The original falling velocity comes from raindrops with a diameter of more than 7.5 mm;

[0068] (2) The original falling speed exceeds the theoretical speed by ±3 m / s.

[0069] S1-2, the average velocity of each raindrop is obtained based on multiple measured falling velocities of each type of raindrop.

[0070] S1-3, the average speed of each type of raindrop is taken as the falling speed of the raindrop.

[0071] Thus, for each type of raindrop, multiple measured falling velocities can be obtained using an optical rain spectrometer, and the average velocity of these measured falling velocities can be calculated as the falling velocity of each type of raindrop.

[0072] Based on the various raindrop falling speeds described in the above embodiments, please refer to... Figure 1 The method provided in this embodiment also includes:

[0073] S2, for each type of raindrop, the velocity compensation coefficient of the raindrop is obtained based on the falling velocity of the raindrop and the theoretical velocity of the raindrop.

[0074] The velocity compensation coefficient is used to compensate for the falling velocity of raindrops of the same size measured by the optical rain spectrometer.

[0075] It's important to note that research has shown that raindrops are affected by both gravity and air resistance during their descent. When a raindrop first begins to fall, its speed is low, and air resistance is also low, causing it to accelerate. As its speed increases, air resistance gradually increases. When the air resistance equals the raindrop's weight, the raindrop reaches a stable descent velocity, its terminal velocity. The larger the diameter of the raindrop, the greater its mass, and consequently, the stronger the gravitational force. For the same air resistance coefficient, a larger diameter raindrop needs to reach a higher speed to equalize air resistance and gravity. Therefore, the final descent velocity of a raindrop is influenced by its diameter.

[0076] This embodiment, after fitting a large amount of data on the correspondence between raindrop diameter and falling speed, derives the relationship between the size of each type of raindrop and its theoretical speed:

[0077] v(D) = -0.1021 + 4.932D - 0.9551D 2 +0.079D 3 -0.002D 4

[0078] In the formula, D represents the diameter of each type of raindrop, and v(D) represents the theoretical velocity corresponding to diameter D. Thus, for each size of raindrop, the theoretical velocity at the moment of impact can be calculated using the above expression. Then, the difference between this theoretical velocity and the measured velocity is calculated and used as the velocity compensation coefficient for that type of raindrop. Therefore, this velocity compensation coefficient can be used to correct the velocity measured by an optical rain spectrometer for raindrops of the same size.

[0079] It should be noted that while theoretical model calculations can predict raindrop falling speeds, they are not directly replaced by theoretical speeds. This is because measured speeds provide information about the actual behavior of raindrops, which may be affected by factors such as wind turbulence. Therefore, the speed compensation coefficient for each size is used to adjust its average speed to match the expected terminal speed calculated using the theoretical model, while retaining information about the actual speed distribution.

[0080] For example, Figure 2A The image shows the falling speeds of various raindrops as measured by an optical rain spectrometer. Figure 2B The image shows the corrected falling speeds of various raindrops.

[0081] Furthermore, this implementation also corrects for the raindrop concentration measured by the optical rain spectrometer. Therefore, as Figure 3 As shown, the raindrop spectrometer calibration method provided in this embodiment further includes:

[0082] S3, for each preset rainfall intensity, obtain the concentration correction coefficient sequence for each raindrop under each rainfall intensity.

[0083] S4. Sort the concentration correction coefficient sequence according to its size to obtain the sorting result of the concentration correction coefficient sequence.

[0084] The concentration correction coefficient sequence includes multiple concentration correction coefficients. Furthermore, this embodiment includes the following rainfall intensities: 0-0.5 mm / h, 0.5-1 mm / h, 1-10 mm / h, and >10 mm / h. Raindrop concentrations under different rainfall intensities need to be studied separately. In this embodiment, the multiple concentration correction coefficients are obtained from different time steps; therefore, as an optional implementation of step S3, it may include:

[0085] S3-1, for each time step, the measured raindrop concentration and reference raindrop concentration of each type of raindrop within the time step are measured by a raindrop spectrometer under the rainfall intensity.

[0086] S3-2, based on the measured raindrop concentration and the reference raindrop concentration of each raindrop within the time step, obtain the concentration correction coefficient of each raindrop within the time step.

[0087] The reference raindrop concentration is measured using a high-precision raindrop spectrometer. In this embodiment, the raindrop concentration measured by a two-dimensional video raindrop spectrometer (2DVD) is selected as the reference raindrop concentration. For example, continuing with the Parsivel raindrop spectrometer, both the Parsivel and 2DVD raindrop spectrometers are installed for data acquisition, ensuring that both instruments are positioned at the same location. This allows for the acquisition of the measured raindrop concentration and the reference raindrop concentration for each type of raindrop within a short time step. The ratio between the measured and reference raindrop concentrations for each type of raindrop within that time step is then used as the concentration correction coefficient for that raindrop within that time step.

[0088] The formula for calculating the concentration correction factor is as follows:

[0089]

[0090] In the formula, P(i) represents the concentration correction coefficient for the i-th type of raindrop, and N 2DVD (i) represents the reference raindrop concentration of the i-th type of raindrop measured by the two-dimensional video raindrop spectrometer, N Parsivel (i) represents the test raindrop concentration of the i-th type of raindrop as measured by the Parsivel raindrop spectrometer.

[0091] In this way, the concentration correction coefficient sequence for each raindrop under each rainfall intensity can be obtained. Finally, the concentration correction coefficient sequences for each raindrop are sorted by size to obtain the sorted results of the concentration correction coefficient sequences.

[0092] As another optional implementation of step S3, multiple concentration correction coefficients are obtained from different iteration cycles. Each iteration cycle includes multiple time steps, and each concentration correction coefficient is obtained from a certain time step in the corresponding iteration cycle.

[0093] For example, continuing with the Parsivel raindrop spectrometer, a Parsivel raindrop spectrometer and a 2D video raindrop spectrometer (2DVD) are installed for data acquisition. During installation, ensure that both instruments are in the same location for measurement. For each rainfall intensity, obtain the concentration correction coefficient sequence by following these steps:

[0094] (1) Based on the rainfall intensity measured by Parsivel, the data are grouped according to rainfall intensity. For example, the rainfall intensity can be divided into the following groups: 0-0.5 mm / h, 0.5-1 mm / h, 1-10 mm / h, and >10 mm / h.

[0095] (2) For each time step, the measured raindrop concentration of each type of raindrop is measured using 2DVD and Parsivel, and the concentration correction coefficient P(i) for each type of raindrop within that time step is calculated:

[0096]

[0097] (3) For each type of raindrop, accumulate the concentration correction coefficient P(i) over all time steps, and sort the accumulated concentration correction coefficients in ascending order. Based on the sorting result, find the median value located in the middle position as the concentration correction coefficient for this iteration period. Wherein, if the number of accumulated concentration correction coefficients is odd, the median value is the concentration correction coefficient located in the middle position; if the number of accumulated concentration correction coefficients is even, the median value is the average of the two concentration correction coefficients located in the middle position.

[0098] It should be noted that the median value was chosen because, in practice, it was found that the median value is not sensitive to outliers and is not affected by extreme values. Therefore, it is more representative of the typical characteristics of the data. Using the median value as the concentration correction coefficient can ensure that the correction process is not dominated by a few abnormal large or small raindrops.

[0099] (4) Iterate through steps 2 to 3 above to obtain the concentration correction coefficients for multiple iterations of each type of raindrop. For example, repeat the iteration 100 times to obtain 100 concentration correction coefficients for each type of raindrop, thereby performing multiple iterations and random sampling on the concentration correction coefficients.

[0100] Based on the above examples illustrating the concentration correction coefficient sequence, please refer to... Figure 3 The method provided in this embodiment also includes:

[0101] S5, select the target concentration correction coefficient for each raindrop from the middle position of the sorting results for each type of raindrop.

[0102] Thus, the target concentration correction coefficients for each type of raindrop are obtained through the above embodiments, and are used to correct the raindrop concentration measured by the optical rain spectrometer for raindrops of the same size. For example, the following are the target concentration correction coefficients for each type of raindrop under different rainfall intensities, obtained through actual measurements by the Parsivel rain spectrometer and the two-dimensional video rain spectrometer:

[0103] Class (i) D i (mm) [0.1 0.5] [0.5 1] [1 10] >10 1 0.31 1.67 2.01 6.71 14.41 2 0.44 1.48 1.47 3.6 6.43 3 0.56 1.13 1.35 3.14 5.92 4 0.69 0.88 1.06 1.87 4.24 5 0.81 0.86 1.0 1.68 3.34 6 0.94 0.76 0.71 1.11 2.17 7 1.06 0.72 0.80 1.03 1.85 8 1.19 1.01 0.94 1.27 1.89 9 1.38 0.77 0.72 0.77 1.26 10 1.63 1.0 1.14 0.97 1.21 11 1.88 0.79 1.03 0.87 1.1 12 2.13 0.61 1.21 1.02 1.05

[0104] It should be noted that optical rain spectrometers are suitable for large-scale deployment due to their affordability. By correcting the data measured by the optical rain spectrometer using the methods described above, the same testing accuracy as high-cost rain spectrometers (e.g., two-dimensional video rain spectrometers) can be obtained at a lower cost.

[0105] Based on the same inventive concept as the raindrop spectrometer calibration method provided in this embodiment, this embodiment also provides a raindrop spectrometer calibration device. This device includes at least one software functional module that can be stored in a memory or embedded in an electronic device. The processor in the electronic device executes the executable module stored in the memory. For example, the software functional modules and computer programs included in the device, etc. Please refer to... Figure 4 Functionally, the device may include:

[0106] The data acquisition module 11 is used to measure the falling speed of various raindrops using an optical rain spectrometer, wherein the various raindrops have different sizes;

[0107] The data correction module 12 is used to obtain the velocity compensation coefficient of each raindrop based on the falling velocity and the theoretical velocity of the raindrop. The velocity compensation coefficient is used to compensate for the falling velocity measured by the optical rain spectrometer for raindrops of the same size.

[0108] In this embodiment, the data acquisition module 11 is used to implement Figure 1 In step S1, the data correction module 12 is used to implement... Figure 1 Step S2 in the above describes the process. Therefore, for a detailed description of each module, please refer to the specific implementation of the corresponding step. Furthermore, given that it shares the same inventive concept as the above-described raindrop spectrometer calibration method, the above-described raindrop spectrometer calibration device can also implement other steps or sub-steps of the method through a data acquisition module, a data calibration module, or other modules. This embodiment will not elaborate on these further.

[0109] In addition, the functional modules in the various embodiments of this application can be integrated together to form an independent part, or each module can exist independently, or two or more modules can be integrated to form an independent part.

[0110] It should also be understood that if the above embodiments are implemented as software functional modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this application.

[0111] Therefore, this embodiment also provides a storage medium, which is a computer-readable storage medium. The storage medium stores a computer program, which, when executed by a processor, implements the raindrop spectrometer calibration method provided in this embodiment. The storage medium can be any medium capable of storing program code, such as a USB flash drive, portable hard drive, read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0112] This embodiment also provides an electronic device for implementing a raindrop spectrometer calibration method. For example... Figure 5 As shown, the electronic device may include a processor and a memory. The memory stores a computer program, and the processor reads and executes the computer program corresponding to the above-described embodiments to implement the raindrop spectrometer calibration method provided in this embodiment.

[0113] See also Figure 5 The electronic device also includes a communication unit 23. The memory 21, processor 22 and communication unit 23 are electrically connected to each other directly or indirectly through system bus 24 to realize data transmission or interaction.

[0114] The memory 21 can be an information recording device based on any electronic, magnetic, optical, or other physical principles, used to record execution instructions, data, etc. In some embodiments, the memory 21 can be, but is not limited to, volatile memory, non-volatile memory, memory drive, etc.

[0115] In some embodiments, the volatile memory may be random access memory (RAM); in some embodiments, the non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), flash memory, etc.; in some embodiments, the storage drive may be a disk drive, solid-state drive, any type of storage disk (such as optical disc, DVD, etc.), or similar storage media, or a combination thereof.

[0116] The communication unit 23 is used to send and receive data over a network. In some embodiments, the network may include a wired network, a wireless network, a fiber optic network, a telecommunications network, an intranet, the Internet, a local area network (LAN), a wide area network (WAN), a wireless local area network (WLAN), a metropolitan area network (MAN), a public switched telephone network (PSTN), a Bluetooth network, a ZigBee network, or a near field communication (NFC) network, or any combination thereof. In some embodiments, the network may include one or more network access points. For example, the network may include wired or wireless network access points, such as base stations and / or network switching nodes, through which one or more components of the service request processing system can connect to the network to exchange data and / or information.

[0117] The processor 22 may be an integrated circuit chip with signal processing capabilities, and may include one or more processing cores (e.g., a single-core processor or a multi-core processor). By way of example only, the processor described above may include a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), an Application Specific Instruction-set Processor (ASIP), a Graphics Processing Unit (GPU), a Physics Processing Unit (PPU), a Digital Signal Processor (DSP), a Field Programmable Gate Array (FPGA), a Programmable Logic Device (PLD), a controller, a microcontroller unit, a Reduced Instruction Set Computing (RISC) computer, or a microprocessor, or any combination thereof.

[0118] Understandable. Figure 5The structure shown is for illustrative purposes only. Electronic devices may also have more advanced features. Figure 5 Showing more or fewer components, or having with Figure 5 The different configurations shown. Figure 5 The components shown can be implemented using hardware, software, or a combination thereof.

[0119] It should be understood that the apparatus and methods disclosed in the above embodiments can also be implemented in other ways. The apparatus embodiments described above are merely illustrative. For example, the flowcharts and block diagrams in the accompanying drawings show the architecture, functionality, and operation of possible implementations of apparatus, methods, and computer program products according to various embodiments of this application. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions marked in the blocks may occur in a different order than those marked in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in a block diagram and / or flowchart, and combinations of blocks in block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.

[0120] The above descriptions are merely various embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A method for calibrating a raindrop spectrometer, characterized in that, The method includes: The falling speed of various raindrops, each with a different size, was measured using an optical rain spectrometer. For each type of raindrop, a velocity compensation coefficient is obtained based on the falling velocity of the raindrop and the theoretical velocity of the raindrop, wherein the velocity compensation coefficient is used to compensate for the falling velocity measured by the optical rain spectrometer for raindrops of the same size; For each preset rainfall intensity, a concentration correction coefficient sequence for each raindrop under that rainfall intensity is obtained, wherein the concentration correction coefficient sequence includes multiple concentration correction coefficients, which are obtained from different time steps. This step specifically includes: For each time step, the measured raindrop concentration and reference raindrop concentration of each type of raindrop within the time step are measured by the raindrop spectrometer under the rainfall intensity, wherein the reference raindrop concentration is measured by a high-precision raindrop spectrometer. Based on the measured raindrop concentration and the reference raindrop concentration of each raindrop within the time step, a concentration correction coefficient for each raindrop within the time step is obtained, wherein the concentration correction coefficient for each raindrop within the time step is the ratio between the measured raindrop concentration and the reference raindrop concentration of each raindrop within the time step. The concentration correction coefficient sequence is sorted according to its size to obtain the sorting result of the concentration correction coefficient sequence; The target concentration correction coefficient for each raindrop is selected from the middle position of the sorting results for each type of raindrop.

2. The raindrop spectrometer calibration method according to claim 1, characterized in that, The falling speeds of various raindrops were measured using an optical rain spectrometer, including: The optical rain spectrometer was used to measure multiple measured falling velocities for each type of raindrop. The average velocity of each raindrop is obtained based on multiple measured falling velocities of each type of raindrop; The average velocity of each type of raindrop is taken as the falling velocity of the raindrop.

3. The raindrop spectrometer calibration method according to claim 1, characterized in that, The relationship between the size of each raindrop and its theoretical velocity is as follows: In the formula, This indicates the diameter of each type of raindrop. Indicates diameter The corresponding theoretical speed.

4. A raindrop spectrometer calibration device, characterized in that, The device includes: The data acquisition module is used to measure the falling speed of various raindrops using an optical rain spectrometer, wherein the various raindrops have different sizes; The data correction module is used to obtain a velocity compensation coefficient for each type of raindrop based on the falling velocity of the raindrop and the theoretical velocity of the raindrop, wherein the velocity compensation coefficient is used to compensate for the falling velocity measured by the optical rain spectrometer for raindrops of the same size. The data acquisition module is further configured to acquire a concentration correction coefficient sequence for each raindrop at each preset rainfall intensity, wherein the concentration correction coefficient sequence includes multiple concentration correction coefficients, which are acquired from different time steps. This step specifically includes: For each time step, the measured raindrop concentration and reference raindrop concentration of each type of raindrop within the time step are measured by the raindrop spectrometer under the rainfall intensity, wherein the reference raindrop concentration is measured by a high-precision raindrop spectrometer. Based on the measured raindrop concentration and the reference raindrop concentration of each raindrop within the time step, a concentration correction coefficient for each raindrop within the time step is obtained, wherein the concentration correction coefficient for each raindrop within the time step is the ratio between the measured raindrop concentration and the reference raindrop concentration of each raindrop within the time step. The data correction module is further configured to sort the concentration correction coefficient sequence according to size to obtain the sorting result of the concentration correction coefficient sequence; and select the target concentration correction coefficient for each raindrop from the middle position of the sorting result for each type of raindrop.

5. A storage medium, characterized in that, The storage medium stores a computer program, which, when executed by a processor, implements the raindrop spectrometer calibration method according to any one of claims 1-3.

6. An electronic device, characterized in that, The electronic device includes a processor and a memory, the memory storing a computer program, which, when executed by the processor, implements the raindrop spectrometer calibration method according to any one of claims 1-3.

7. A program instruction, characterized in that, When the program instructions are executed by the processor, they implement the raindrop spectrometer calibration method as described in any one of claims 1-3.

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