Raindrop spectrometer correction method and related device

Abstract

The invention provides a raindrop spectrometer correction method and a related device, and relates to the technical field of meteorological measurement. In the method, the electronic equipment measures the falling speeds of raindrops with different sizes by using an optical rain 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 concentration correction coefficient sequence is ranked according to the size. And then, constructing a large sample data set, and carrying out multiple iterative training on a median of a sorting result of each raindrop correction coefficient in the data set to obtain a concentration correction coefficient as a target concentration correction coefficient. Therefore, the measurement precision of the optical rain spectrometer on the raindrop speed and concentration is improved through the speed compensation coefficient and the target concentration correction coefficient obtained through calculation.

Description

Technical Field

[0001] The present application relates to the field of meteorological measurement technology, and in particular to a raindrop spectrometer calibration method and related devices. Background Art

[0002] Drop Size Distribution (DSD), as a core indicator for evaluating the microscopic characteristics of precipitation, describes in detail the distribution of the number of raindrops of different equal volume diameters in a specific volume of air. This parameter is crucial to a deep understanding of the microphysical processes of precipitation, including but not limited to the mechanisms of cloud formation, development and dissipation, and how it ultimately affects the intensity of ground precipitation and the characteristics of raindrop size distribution. The complex dynamics of precipitation, including the growth, evaporation, collision and splitting of raindrops, together constitute the unique appearance of ground precipitation patterns.

[0003] At present, advanced optical rain spectrometers, such as the OTT Parsivel raindrop spectrometer, can accurately measure and analyze the microstructure of precipitation, including key parameters such as the size, speed and distribution density of raindrops. The instrument is based on the principle of infrared laser. It emits a thin and wide infrared laser beam vertically to monitor the change of laser intensity when precipitation particles pass through the measurement area. The DSP (digital signal processing system) calculates the size, movement speed and type of the particles based on the change of laser intensity. When precipitation particles pass through the emitted horizontal laser beam, the laser light intensity will be weakened due to the scattering effect of raindrops, which will cause the output voltage to be adjusted accordingly. 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 main axis of raindrops is horizontal. This simplified assumption will lead to large deviations when measuring the concentration of raindrops, especially under high rainfall conditions. The existence of such errors will not only affect the accurate analysis of the microstructure of precipitation, but may also have an adverse effect on the study of precipitation processes, thereby limiting the comprehensive understanding of complex precipitation phenomena. Summary of the invention

[0005] In order to overcome at least one of the deficiencies in the prior art, the present application provides a raindrop spectrometer calibration method and related devices, specifically including:

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

[0007] The falling speeds of multiple raindrops are measured by an optical rain spectrometer, wherein the multiple raindrops have different sizes;

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

[0009] In combination with the optional implementation manner of the first aspect, the falling speeds of various raindrops are measured by an optical rain spectrometer, including:

[0010] Measuring a plurality of measured falling velocities of each type of raindrops by the optical rain spectrometer;

[0011] Obtaining an average speed of each raindrop according to a plurality of measured falling speeds of each raindrop;

[0012] The average speed of each type of raindrops is respectively used as the falling speed of the raindrops.

[0013] In conjunction with the optional implementation manner of the first aspect, the relationship between the size of each raindrop and the theoretical speed is:

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

[0015] Wherein, D represents the diameter of each raindrop, and v(D) represents the theoretical speed corresponding to the diameter D.

[0016] In combination with the optional implementation manner of the first aspect, the method further includes:

[0017] For each preset rainfall intensity, obtaining a concentration correction coefficient sequence of each raindrop under the rainfall intensity, wherein the concentration correction coefficient sequence includes a plurality of concentration correction coefficients;

[0018] Sorting the concentration correction coefficient sequence according to size to obtain a sorting result of the concentration correction coefficient sequence;

[0019] The target concentration correction coefficient of each raindrop is selected from the middle position of the sorting result of each raindrop.

[0020] In combination with the optional implementation manner of the first aspect, the multiple concentration correction coefficients are respectively obtained from different time steps, and the step of obtaining a concentration correction coefficient sequence of each raindrop under the rainfall intensity includes:

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

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

[0023] In combination with the optional implementation manner of the first aspect, the concentration correction coefficient of each raindrop in the time step is the ratio between the measured raindrop concentration of each raindrop in the time step and the reference raindrop concentration.

[0024] In a second aspect, the present application further provides a raindrop spectrometer calibration device, the device comprising:

[0025] A data acquisition module, used for measuring the falling speed of multiple raindrops by an optical rain spectrometer, wherein the multiple raindrops have different sizes;

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

[0027] In conjunction with the optional implementation manner of the second aspect, the data acquisition module is further specifically used for:

[0028] Measuring a plurality of measured falling velocities of each type of raindrops by the optical rain spectrometer;

[0029] Obtaining an average speed of each raindrop according to a plurality of measured falling speeds of each raindrop;

[0030] The average speed of each type of raindrops is respectively taken as the falling speed of the raindrops.

[0031] In conjunction with the optional implementation manner of the second aspect, the relationship between the size of each raindrop and the theoretical speed 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] In conjunction with the optional implementation manner of the second aspect, the data acquisition module is further used for:

[0035] For each preset rainfall intensity, obtaining a concentration correction coefficient sequence of each raindrop under the rainfall intensity, wherein the concentration correction coefficient sequence includes a plurality of concentration correction coefficients;

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

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

[0038] In conjunction with the optional implementation manner of the second aspect, the multiple concentration correction coefficients are respectively obtained from different time steps, and the data acquisition module is further specifically used for:

[0039] For each of the time steps, the measured raindrop concentration and the reference raindrop concentration of each type of raindrops within the time step are measured by the raindrop spectrometer at the rainfall intensity;

[0040] A concentration correction coefficient for each raindrop in the time step is obtained according to the measured raindrop concentration of each raindrop in the time step and the reference raindrop concentration.

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

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

[0043] In a fourth aspect, the present application further provides an electronic device, comprising a processor and a memory, wherein the memory stores a computer program, and when the computer program is executed by the processor, the raindrop spectrometer correction method is implemented.

[0044] In a fifth aspect, the present application also provides a program instruction, which implements the raindrop spectrometer correction method when executed by a processor.

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

[0046] The present application provides a raindrop spectrometer calibration method and related devices. In the method, an electronic device uses an optical rain spectrometer to measure the falling speed of raindrops of different sizes, and calculates a speed compensation coefficient based on the actual falling speed and 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, by constructing a large sample data set, and performing multiple iterative training on the median of the sorted results of each raindrop correction coefficient in the data set, the obtained concentration correction coefficient is used as the target concentration correction coefficient. In this way, the measurement accuracy of the optical rain spectrometer for raindrop velocity and concentration is improved by calculating the speed compensation coefficient and the target concentration correction coefficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0048] Figure 1 One of the flow charts of the raindrop spectrometer calibration method provided in the embodiment of the present application;

[0049] Figure 2A A schematic diagram before speed correction provided in an embodiment of the present application;

[0050] Figure 2B A schematic diagram of the speed correction provided in the embodiment of the present application;

[0051] Figure 3 The second process of the raindrop spectrometer calibration method provided in the embodiment of the present application;

[0052] Figure 4 A schematic diagram of the structure of a raindrop spectrometer calibration device provided in an embodiment of the present application;

[0053] Figure 5 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0054] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0055] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0056] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0057] In the description of the present 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 "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises 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 technology, the optical rain spectrometer usually assumes that the precipitation particles exist in liquid form and the main axis direction of the raindrops is horizontal. This simplified assumption will have a large deviation when measuring the concentration of raindrops, especially in high rainfall conditions, where significant errors will occur. Therefore, an effective method is urgently needed to correct the raindrop spectrum measured by the optical rain spectrometer.

[0059] Based on the discovery of the above technical problems, the inventors have proposed the following technical solutions to solve or improve the above problems through creative work. It should be noted that the defects in the solutions in the above prior art are the results obtained by the inventors after practice and careful research. Therefore, the discovery process of the above problems and the solutions proposed in the embodiments of the present application for the above problems below should all be the contributions made by the inventors to the present application in the process of invention and creation, and should not be understood as technical contents known to those skilled in the art.

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

[0061] It should be noted that the electronic device for implementing the raindrop spectrometer correction method may be, but is not limited to, a mobile terminal, a tablet computer, a laptop computer, a desktop computer, and a server, etc. Among them, the server may be a single server or a server group. The server group may be centralized or distributed (for example, the server may be a distributed system). In some embodiments, the server may be local or remote relative to the user terminal. In some embodiments, the server may be implemented on a cloud platform; as an example only, the cloud platform may 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), etc., or any combination thereof. In some embodiments, the server may be implemented on an electronic device having one or more components.

[0062] To make the solution provided by this embodiment clearer, it is assumed that the electronic device implementing the method is a desktop computer, and combined with Figure 1 Each step of the method is described in detail. However, it should be understood that the operations of the flowchart may not be implemented in order, and steps without logical contextual relationships may be reversed in order or implemented simultaneously. In addition, those skilled in the art may add one or more other operations to the flowchart, or remove one or more operations from the flowchart under the guidance of the content of this application. Figure 1 As shown, the method includes:

[0063] S1, the falling speed of various raindrops is measured by an optical rain spectrometer.

[0064] The various raindrops have different sizes. It should be understood that the falling speed of raindrops is related to the size of raindrops. In this embodiment, the size of raindrops is measured by the diameter of raindrops. Therefore, in this embodiment, raindrops measured by the optical rain spectrometer are classified by diameter. In view of the fact that for each type of raindrop, there is a certain accidental error in the measured falling speed of a single raindrop, therefore, this embodiment also provides the following optional implementation of step S1:

[0065] S1-1, multiple measured falling velocities of each raindrop are measured by an optical rain spectrometer.

[0066] It should be noted that the above-mentioned multiple measured falling speeds are the results of filtering the original falling speeds. If any of the following conditions is met, they will be filtered out:

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

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

[0069] S1-2, obtaining an average speed of each raindrop according to a plurality of measured falling speeds of each raindrop.

[0070] S1-3, taking the average speed of each type of raindrops as the falling speed of the raindrops.

[0071] In this way, for each raindrop, a plurality of measured falling velocities can be measured by the optical rain spectrometer, and the average speed of these measured falling velocities can be calculated as the falling speed of each raindrop.

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

[0073] S2, for each raindrop, a speed compensation coefficient of the raindrop is obtained according to the falling speed of the raindrop and the theoretical speed 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 should be noted that after research, it was found that raindrops are affected by the combined effects of gravity and air resistance during their fall. When the raindrops first begin to fall, due to their low speed and low air resistance, the raindrops will accelerate their fall. As the speed increases, the air resistance gradually increases. When the air resistance increases to be equal to the gravity of the raindrops, the raindrops will reach a stable falling speed, namely the terminal velocity. The larger the diameter of the raindrops, the greater their mass, and the corresponding greater the gravitational force. Under the same air resistance coefficient, raindrops with larger diameters need to reach a higher speed to make the air resistance equal to gravity. Therefore, the final falling speed of the raindrops is affected by the diameter of the raindrops.

[0076] After fitting a large amount of data on the corresponding relationship between raindrop diameter and falling speed, this embodiment obtains the relationship between the size of each raindrop and the 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 raindrop, and v(D) represents the theoretical speed corresponding to the diameter D. Thus, for each size of raindrop, the theoretical speed of raindrops of this size when they fall to the ground can be calculated by the above expression, and then the difference between the theoretical speed and the measured falling speed is calculated as the speed compensation coefficient of the raindrop. Therefore, the falling speed measured by the optical rain spectrometer for raindrops of the same size can be corrected by the speed compensation coefficient.

[0079] It should be noted that although the theoretical model calculations can predict the falling speed of raindrops, they are not directly replaced by the theoretical speed. The reason is that the measured speed can provide information about the actual raindrop behavior, which may be affected by factors such as wind turbulence. Therefore, the speed compensation coefficient for each size is 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 figure shows the falling speeds of various raindrops measured by the optical rain spectrometer. Figure 2B The corrected falling speeds of various raindrops are shown in FIG.

[0081] In addition, this embodiment also corrects the raindrop concentration measured by the optical rain spectrometer. Figure 3 As shown, the raindrop spectrometer calibration method provided in this embodiment also includes:

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

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

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

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

[0086] S3-2, obtaining a concentration correction coefficient for each raindrop within the time step according to the measured raindrop concentration of each raindrop within the time step and the reference raindrop concentration.

[0087] Among them, the reference raindrop concentration is measured by a high-precision raindrop spectrometer. In this regard, this implementation selects the raindrop concentration measured by a two-dimensional video raindrop spectrometer (2DVD) as the reference raindrop concentration. Exemplarily, taking the Parsivel raindrop spectrometer as an example, the Parsivel raindrop spectrometer and the two-dimensional video raindrop spectrometer (2DVD) are installed for data collection. During installation, it is necessary to ensure that the two instruments are measured at the same position. In this way, the measured raindrop concentration and the reference raindrop concentration of each raindrop within the short time can be obtained, and then the ratio between the measured raindrop concentration of each raindrop within the time step and the reference raindrop concentration is used as the concentration correction coefficient of each raindrop within the time step.

[0088] For this, the concentration correction coefficient is calculated as follows:

[0089]

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

[0091] In this way, the concentration correction coefficient sequence of each raindrop under each rainfall intensity can be obtained. Finally, the concentration correction coefficient sequence of each raindrop is sorted according to size to obtain the sorting result of the concentration correction coefficient sequence.

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

[0093] For example, continue to use the Parsivel raindrop spectrometer as an example, install the Parsivel raindrop spectrometer and the two-dimensional video raindrop spectrometer (2DVD) for data collection, and ensure that the two instruments are measured at the same location during installation. For each rainfall intensity, follow the steps below to obtain the concentration correction coefficient sequence:

[0094] (1) According to the rainfall intensity measured by Parsivel, the data are grouped by 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, >10 mm / h.

[0095] (2) For each time step, the measured raindrop concentration of each raindrop is measured by 2DVD and Parsivel respectively, and the concentration correction coefficient P(i) of each raindrop in the time step is calculated:

[0096]

[0097] (3) For each raindrop, the concentration correction coefficient P(i) in all time steps is accumulated, and the accumulated concentration correction coefficients are sorted from small to large. According to the sorting result, the middle value in the middle position is found as the concentration correction coefficient of this iteration cycle. If the number of accumulated concentration correction coefficients is an odd number, the middle value is the concentration correction coefficient in the middle position; if the number of accumulated concentration correction coefficients is an even number, the middle value is the average of the two concentration correction coefficients in the middle position.

[0098] It should be noted that the reason for choosing the middle value is that it is found in practice that the middle value is insensitive to outliers and is not affected by extreme values. Therefore, the middle value better represents the typical characteristics of the data. Using the middle value as the concentration correction coefficient can ensure that the correction process will not be dominated by a few abnormally large or small raindrops.

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

[0100] Based on the introduction of the concentration correction coefficient sequence in the above embodiment, continue to refer to Figure 3 The method provided in this embodiment also includes:

[0101] S5, selecting a target concentration correction coefficient for each raindrop from the middle position of the sorting result of each raindrop.

[0102] Thus, the target concentration correction coefficient of each raindrop is obtained through the above embodiment, which is 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 of each raindrop under different rainfall intensities obtained by the Parsivel raindrop spectrometer and the two-dimensional video raindrop spectrometer after actual measurement:

[0103] Class(i) <![CDATA[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 the optical rain spectrometer is suitable for large-scale deployment due to its economical characteristics. By correcting the data measured by the optical rain spectrometer in the above manner, the same test accuracy as that of a high-cost raindrop spectrometer (e.g., a two-dimensional video raindrop spectrometer) 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. The device includes at least one software function module that can be stored in a memory or fixed in an electronic device in the form of software. The processor in the electronic device is used to execute the executable module stored in the memory. For example, the software function module and computer program included in the device. Please refer to Figure 4 , functionally speaking, the device may include:

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

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

[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 Therefore, for the detailed description of each of the above modules, please refer to the specific implementation of the corresponding step. In addition, in view of the same inventive concept as the above raindrop spectrometer calibration method, the above raindrop spectrometer calibration device can also implement other steps or sub-steps of the method through a data acquisition module, a data correction module or other modules, which will not be described in detail in this embodiment.

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

[0110] It should also be understood that if the above implementation is implemented in the form of a software function module and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, which is stored in a storage medium and includes a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the various embodiments of the present application.

[0111] Therefore, the present embodiment further provides a storage medium, which is a computer-readable storage medium. The storage medium stores a computer program, and when the computer program is executed by the processor, the raindrop spectrometer calibration method provided in the present embodiment is implemented. Among them, the storage medium can be a U disk, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a disk or an optical disk, etc., which can store program codes.

[0112] This embodiment also provides an electronic device for implementing the raindrop spectrometer calibration method. Figure 5 As shown, the electronic device may include a processor and a memory. In addition, the memory stores a computer program, and the processor implements the raindrop spectrometer calibration method provided in this embodiment by reading and executing the computer program corresponding to the above implementation in the memory.

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

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

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

[0116] The communication unit 23 is used to send and receive data through a network. In some embodiments, the network may include a wired network, a wireless network, a fiber optic network, a telecommunication 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 wide area network (WAN), 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 a wired or wireless network access point, such as a base station and / or a network switching node, through which one or more components of the service request processing system may be connected to the network to exchange data and / or information.

[0117] The processor 22 may be an integrated circuit chip having a signal processing capability, and the processor 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 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 physical 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 computer (RISC), or a microprocessor, or any combination thereof.

[0118] Understandably, Figure 5The structure shown is for illustration only. The electronic device may also have Figure 5 More or fewer components than shown, or with Figure 5 Different configurations are shown. Figure 5 The components shown may be implemented in hardware, software or a combination thereof.

[0119] It should be understood that the apparatus and method disclosed in the above-mentioned embodiments can also be implemented in other ways. The apparatus embodiments described above are merely schematic. For example, the flowcharts and block diagrams in the accompanying drawings show the possible architecture, functions and operations of the apparatus, methods and computer program products according to the multiple embodiments of the present application. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of a code, and the module, a program segment or a part of a code contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or the flowchart, and the combination of boxes in the block diagram and / or the flowchart can be implemented with a dedicated hardware-based system that performs a specified function or action, or can be implemented with a combination of dedicated hardware and computer instructions.

[0120] The above are only various implementations of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A raindrop spectrometer calibration method, characterized in that: The method comprises: The falling speeds of multiple raindrops are measured by an optical rain spectrometer, wherein the multiple raindrops have different sizes; For each of the raindrops, a speed compensation coefficient of the raindrop is obtained according to the falling speed of the raindrop and the theoretical speed of the raindrop, wherein the speed compensation coefficient is used to compensate for the falling speed of raindrops of the same size measured by the optical rain spectrometer.

2. The raindrop spectrometer calibration method according to claim 1, characterized in that: The optical rain spectrometer measures the falling speed of various raindrops, including: Measuring a plurality of measured falling velocities of each type of raindrops by the optical rain spectrometer; Obtaining an average speed of each raindrop according to a plurality of measured falling speeds of each raindrop; The average speed of each type of raindrops is respectively taken as the falling speed of the raindrops.

3. The raindrop spectrometer calibration method according to claim 1, characterized in that: The relationship between the size of each raindrop and the theoretical speed is: v(D)=-0.1021+4.932D-0.9551D 2 +0.079D 3 -0.002D 4 Wherein, D represents the diameter of each raindrop, and v(D) represents the theoretical speed corresponding to the diameter D.

4. The raindrop spectrometer calibration method according to claim 1, characterized in that: The method further comprises: For each preset rainfall intensity, obtaining a concentration correction coefficient sequence of each raindrop under the rainfall intensity, wherein the concentration correction coefficient sequence includes a plurality of concentration correction coefficients; Sorting the concentration correction coefficient sequence according to size to obtain a sorting result of the concentration correction coefficient sequence; The target concentration correction coefficient of each raindrop is selected from the middle position of the sorting result of each raindrop.

5. The raindrop spectrometer calibration method according to claim 4, characterized in that: The multiple concentration correction coefficients are respectively obtained from different time steps, and the concentration correction coefficient sequence of each raindrop under the rainfall intensity is obtained, including: For each of the time steps, the measured raindrop concentration and the reference raindrop concentration of each type of raindrops within the time step are measured by the raindrop spectrometer at the rainfall intensity; A concentration correction coefficient for each raindrop in the time step is obtained according to the measured raindrop concentration of each raindrop in the time step and the reference raindrop concentration.

6. The raindrop spectrometer calibration method according to claim 5, characterized in that: The concentration correction coefficient of each raindrop in the time step is the ratio between the measured raindrop concentration of each raindrop in the time step and the reference raindrop concentration.

7. A raindrop spectrometer calibration device, characterized in that: The device comprises: A data acquisition module, used for measuring the falling speed of multiple raindrops by an optical rain spectrometer, wherein the multiple raindrops have different sizes; A data correction module is used to obtain a speed compensation coefficient of the raindrop for each type of raindrop according to the falling speed of the raindrop and the theoretical speed of the raindrop, wherein the speed compensation coefficient is used to compensate for the falling speed measured by the optical rain spectrometer for raindrops of the same size.

8. A storage medium, characterized in that: The storage medium stores a computer program, and when the computer program is executed by a processor, the raindrop spectrometer correction method according to any one of claims 1 to 6 is implemented.

9. An electronic device, characterized in that: The electronic device includes a processor and a memory, wherein the memory stores a computer program, and when the computer program is executed by the processor, the raindrop spectrometer correction method according to any one of claims 1 to 6 is implemented.

10. A program instruction, characterized in that: When the program instructions are executed by a processor, the raindrop spectrometer correction method according to any one of claims 1 to 6 is implemented.

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