Raindrop spectrometer

Abstract

The utility model relates to a raindrop spectrometer, which comprises a box body, and a measurement frame body, a first measurement assembly and a second measurement assembly which are arranged in the box body, the first measurement assembly and the second measurement assembly are both located outside the measurement frame body, and the first measurement assembly comprises a first linear array light source and a first linear array camera. The first measuring assembly comprises a first linear array light source and a first linear array camera, the second measuring assembly comprises a second linear array light source and a second linear array camera, the first linear array camera and the second linear array camera are rotatably installed in the box body, and light emitted by the first linear array light source and light emitted by the second linear array light source enter the measuring area from different directions on the horizontal plane and are emitted out from the opposite sides of the measuring area; the first linear array camera is used for receiving light emitted by the first linear array light source and penetrating through the measurement area, and the second linear array camera is used for receiving light emitted by the second linear array light source and penetrating through the measurement area. According to the invention, the image information and contour information of different sides of the raindrop can be captured, so that the three-dimensional shape of the raindrop can be constructed and the size of the raindrop can be calculated more accurately.

Description

Technical Field

[0001] This application relates to the technical field of meteorological monitoring, and particularly to a raindrop spectrometer. Background Art

[0002] In recent years, the increase in extreme precipitation events and the uncertainty of precipitation time in China have both had important impacts on the ecosystem and human activities. Therefore, real-time monitoring of precipitation plays an important role in people's lives and social development, especially in the fields of meteorology, highways, airports, hydrology, and agriculture. For example, various types of precipitation can reduce visibility, and snow or ice accumulation on roads can easily lead to serious traffic accidents; when summer comes, frequent strong convective weather and high-intensity continuous precipitation can cause disasters such as landslides and crop damage. In addition, aspects such as aviation flight and information communication will also be affected by precipitation weather. Therefore, more and more accurate information about precipitation is needed. Detecting precipitation information plays an important role in meteorological automatic observation, artificial precipitation operation, and calibration of meteorological radars, and is also of great significance for climate analysis and cloud physics research in various regions.

[0003] Since people began to observe precipitation, precipitation measurement technology has also made great progress. From the earliest manual precipitation measurement using a rain gauge to the later use of various types of rain gauges for automated precipitation measurement, such as siphon, tipping bucket, weighing, piezoelectric, ultrasonic, and other types of automatic rain gauges. With the overall development of atmospheric science and the progress of electronic technology, a variety of new precipitation measurement instruments have emerged. According to different measurement principles, they can be divided into impact raindrop spectrometers, optical raindrop spectrometers, and acoustic raindrop spectrometers. Currently, the most commonly used is the optical raindrop spectrometer, and the core technology of the raindrop spectrometers used in China mainly relies on foreign imports. Among them, the one-dimensional laser raindrop spectrometer is used more frequently. This technology uses a laser emitter and a laser detector to measure rainfall information. A group of parallel laser beams is used as the optical emission source, and the lens photodiode at the receiving end measures the light intensity and converts it into an electrical signal. When raindrops pass through the laser beam, a received signal is generated, and the raindrop diameter is calculated through the reduced amplitude. However, this one-dimensional laser raindrop spectrometer cannot obtain the image information of raindrops, and the measurement accuracy of raindrop size is not high enough. Summary of the Utility Model

[0004] Based on this, it is necessary to provide a raindrop spectrometer that can improve the accuracy of measuring raindrop size.

[0005] A raindrop spectrometer, comprising a box body and a measurement frame body arranged inside the box body. The measurement frame body defines a measurement area that penetrates along the gravity direction. The raindrop spectrometer further comprises a first measurement assembly and a second measurement assembly arranged inside the box body. Both the first measurement assembly and the second measurement assembly are located outside the measurement frame body. The first measurement assembly comprises a first linear array light source and a first linear array camera. The second measurement assembly comprises a second linear array light source and a second linear array camera. The first linear array camera is rotatably installed inside the box body. The second linear array camera is rotatably installed inside the box body. The light rays emitted by the first linear array light source and the light rays emitted by the second linear array light source can respectively enter the measurement area from different directions on the horizontal plane and exit from the opposite side of the measurement area. The first linear array camera is used to receive the light rays emitted by the first linear array light source and passing through the measurement area. The second linear array camera is used to receive the light rays emitted by the second linear array light source and passing through the measurement area.

[0006] It can be understood that in this application, a linear array light source is used to provide light rays for the linear array camera to photograph raindrops. The light rays pass through the measurement frame body and are received by the linear array camera. The linear array light source can increase the brightness of the illumination background, making the photographed raindrop images clearer, thus laying an optical foundation for improving the measurement accuracy of raindrop size. In this application, a linear array camera is also used as a photosensitive device. The measurement accuracy of the linear array camera is higher than that of traditional analog photosensitive devices, thus laying an equipment foundation for improving the measurement accuracy of raindrop size. In this application, the light rays emitted by the first linear array light source and the light rays emitted by the second linear array light source are also arranged to enter the measurement area from different angles. When a raindrop falls into the measurement area of the measurement frame body, due to the refraction or occlusion of the light rays by the raindrop, the two light rays with different incident angles can carry image information of different sides of the raindrop. When the two light rays carrying the image information reach the first linear array camera and the second linear array camera, the cameras can capture the image information of different sides of the raindrop, thereby obtaining the contour information of the raindrop. In this way, it is beneficial to construct the three-dimensional shape of the raindrop and calculate the size of the raindrop more accurately. In addition, the first linear array camera and the second linear array camera can rotate inside the box body, so that the shooting angle of the linear array camera can be adjusted. In this way, the required shooting angle can be set according to the usage requirements or specific environmental conditions, so as to obtain the required raindrop side information.

[0007] In one embodiment, the shooting planes of the first linear array camera and the second linear array camera are both parallel to the horizontal plane, and there is a height difference between the shooting plane of the first linear array camera and the shooting plane of the second linear array camera.

[0008] In one embodiment, the measurement frame is square, and the first linear light source and the second linear light source are respectively located outside adjacent sides of the measurement frame; the first linear camera and the second linear camera are located outside different sides of the measurement frame.

[0009] In one embodiment, the raindrop spectrometer further includes a cover and a splash-proof layer. The cover is located at the top of the box body, and the splash-proof layer is provided on the cover.

[0010] In one embodiment, there is a gap between the splash-proof layer and the cover;

[0011] And / or, the splash-proof layer is a honeycomb plate, a wire mesh, a plate with bristles, or an artificial turf layer.

[0012] In one embodiment, a heating element is further included, and the heating element is provided between the cover and the splash-proof layer.

[0013] In one embodiment, the first measurement assembly further includes a first reflector with an adjustable reflection angle, and the second measurement assembly further includes a second reflector with an adjustable reflection angle; the first linear camera receives the light emitted by the first linear light source through the first reflector, and the second linear camera receives the light emitted by the second linear light source through the second reflector; the light emitted by the first linear light source is perpendicular to the light emitted by the second linear light source.

[0014] In one embodiment, the box body has a bottom plate. The first measurement assembly further includes a first mounting seat, and the first mounting seat includes a first fixing plate, a first connecting plate, a first elastic member, and a first fastener. The first linear camera is fixedly connected to the first fixing plate, and the first connecting plate is mounted on the bottom plate.

[0015] The first elastic member connects the first fixing plate and the first connecting plate and makes the first fixing plate and the first connecting plate tend to approach each other.

[0016] One end of the first fastener is movably connected to the first fixing plate, and the other end abuts against the first connecting plate to adjust the distance between the first fixing plate and the first connecting plate.

[0017] The second measurement assembly further includes a second mounting seat, and the second mounting seat includes a second fixing plate, a second connecting plate, a second elastic member, and a second fastener. The second linear camera is fixedly connected to the second fixing plate, and the second connecting plate is mounted on the bottom plate.

[0018] The second elastic member connects the second fixed plate and the second connecting plate, and makes the second fixed plate and the second connecting plate tend to approach each other.

[0019] One end of the second fastener is movably connected to the second fixed plate, and the other end abuts against the second connecting plate to adjust the distance between the second fixed plate and the second connecting plate.

[0020] In one embodiment, a first through hole is provided on the first fixed plate. The first through hole is a threaded hole. The first fastener has an external thread. A first limiting groove is provided on the first connecting plate. One end of the first fastener extends out from the first through hole and abuts against the first limiting groove.

[0021] A second through hole is provided on the second fixed plate. The second through hole is a threaded hole. The second fastener has an external thread. A second limiting groove is provided on the second connecting plate. One end of the second fastener extends out from the second through hole and abuts against the second limiting groove.

[0022] In one embodiment, a rain sensor is further included. The rain sensor is arranged in the measurement area. Description of the Drawings

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0024] Figure 1 Is a three-dimensional view of a raindrop spectrometer according to an embodiment of the present application;

[0025] Figure 2 Is a top view of a raindrop spectrometer according to an embodiment of the present application;

[0026] Figure 3 Is a schematic diagram of the positions of the first measurement component and the second measurement component of the present application;

[0027] Figure 4 Is a three-dimensional view of a first linear array camera and a first mounting seat according to an embodiment of the present application;

[0028] Figure 5 Is a top view of a first linear array camera and a first mounting seat according to an embodiment of the present application;

[0029] Figure 6 Is a three-dimensional view of a second linear array camera and a second mounting seat according to an embodiment of the present application;

[0030] Figure 7 Top view of the second linear array camera and the second mounting base according to an embodiment of the present application;

[0031] Figure 8 Top view of a raindrop spectrometer according to another embodiment of the present application.

[0032] Reference numerals: 10, raindrop spectrometer; 100, box body; 101, bottom plate; 110, measurement frame; 1101, first gap; 1102, second gap; 1103, third gap; 1104, fourth gap; 111, measurement area; 120, first measurement assembly; 121, first linear array light source; 122, first linear array camera; 123, first reflector; 124, first mounting base; 1241, first fixing plate; 1242, first connecting plate; 1243, first elastic member; 1244, first fastener; 12411, first through hole; 12421, first limiting groove; 130, second measurement assembly; 131, second linear array light source; 132, second linear array camera; 133, second reflector; 134, second mounting base; 1341, second fixing plate; 1342, second connecting plate; 1343, second elastic member; 1344, second fastener; 13411, second through hole; 13421, second limiting groove; 140, rain sensor; 200, cover body; 201, square hole; 210, hinge; 220, gas strut; 300, splash-proof layer. Detailed implementation manners

[0033] To make the above objects, features, and advantages of the present application more apparent and understandable, the following describes the detailed implementation manners of the present application with reference to the accompanying drawings. Many specific details are set forth in the following description to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein. Those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0034] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it can be directly on the other component or there may also be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right", and similar expressions used in the specification of the present application are only for the purpose of illustration and do not represent the only implementation manner.

[0035] In addition, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of this application, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0036] In this application, unless otherwise clearly specified and defined, the first feature may be in direct contact with the second feature or in indirect contact with the second feature through an intermediate medium when the first feature is "on" or "under" the second feature. Moreover, when the first feature is "above", "over" or "on top of" the second feature, the first feature may be directly above or diagonally above the second feature, or merely indicate that the first feature has a higher horizontal height than the second feature. When the first feature is "under", "beneath" or "underneath" the second feature, the first feature may be directly below or diagonally below the second feature, or merely indicate that the first feature has a lower horizontal height than the second feature.

[0037] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as commonly understood by those skilled in the technical field to which this application pertains. The terms used in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more of the related listed items.

[0038] Please refer to Figures 1 to 3 , this application provides a disdrometer 10, which includes a box body 100 and a measurement frame body 110 disposed inside the box body 100. The measurement frame body 110 encloses a measurement area 111 that penetrates along the gravity direction. The disdrometer 10 further includes a first measurement component 120 and a second measurement component 130 disposed inside the box body 100. Both the first measurement component 120 and the second measurement component 130 are located outside the measurement frame body 110. The first measurement component 120 includes a first linear light source 121 and a first linear camera 122. The second measurement component 130 includes a second linear light source 131 and a second linear camera 132. The first linear camera 122 is rotatably installed inside the box body 100, and the second linear camera 132 is rotatably installed inside the box body 100. The light emitted by the first linear light source 121 and the light emitted by the second linear light source 131 can respectively enter the measurement area 111 from different directions on the horizontal plane and exit from the opposite side of the measurement area 111. The first linear camera 122 is used to receive the light emitted by the first linear light source 121 and passing through the measurement area 111, and the second linear camera 132 is used to receive the light emitted by the second linear light source 131 and passing through the measurement area 111.

[0039] When raindrops fall into the measurement area 111 of the measurement frame 110, since the light rays emitted by the first linear light source 121 and the second linear light source 131 enter the measurement area 111 from different directions and exit from the opposite side of the measurement area 111, the raindrops will cause refraction or occlusion of the light rays emitted by the first linear light source 121 and the second linear light source 131, so that the light rays carry the image information and contour information of the raindrops. The light rays emitted by the first linear light source 121 interact with the raindrops and then reach the first linear camera 122, and the light rays emitted by the second linear light source 131 interact with the raindrops and then reach the second linear camera 132. Moreover, due to the relative movement of the raindrops with respect to the two linear cameras, the two linear cameras can capture the light rays that have interacted with the raindrops, thereby obtaining images of different sides of the raindrops. It can be understood that when the light rays irradiate the raindrops, the light rays passing through the raindrops, being refracted by the raindrops, being reflected by the raindrops, etc. can all be used as the ways of the interaction between the light rays and the raindrops.

[0040] It can be understood that in this embodiment, the linear light source is used to provide the light rays for the linear camera to photograph the raindrops. The light rays pass through the measurement frame 110 and are received by the linear camera. The linear light source can increase the brightness of the illumination background, making the photographed raindrop images clearer, thus laying an optical foundation for improving the measurement accuracy of the raindrop size; in this embodiment, the linear camera is also used as the photosensitive device, and the measurement accuracy of the linear camera is higher than that of the traditional analog photosensitive device, thus laying an equipment foundation for improving the measurement accuracy of the raindrop size; in this embodiment, it is also set that the light rays emitted by the first linear light source 121 and the light rays emitted by the second linear light source 131 enter the measurement area 111 from different directions. After carrying different image information of the raindrops, the light rays reach the two linear cameras, so that the two linear cameras can capture the image information of different sides of the raindrop, thereby obtaining the contour information of the raindrop. In this way, it is beneficial to construct the three-dimensional shape of the raindrop and calculate the size of the raindrop more accurately.

[0041] In addition, the first linear camera 122 and the second linear camera 132 can rotate within the box body 100, so that the shooting angle of the linear camera can be adjusted. In this way, the required shooting angle can be set according to the needs of the user or the specific environmental conditions, thereby obtaining the required side information of the raindrop.

[0042] Further, refer to Figure 3, the measurement frame 110 has a first gap 1101, a second gap 1102, a third gap 1103, and a fourth gap 1104. The first gap 1101, the second gap 1102, the third gap 1103, and the fourth gap 1104 are respectively located on different sides of the measurement frame 110, and the first gap 1101 and the third gap 1103 are parallel and located on the same horizontal plane, and the second gap 1102 and the fourth gap 1104 are parallel and located on the same horizontal plane. When the first linear light source 121 and the second linear light source 131 are turned on, the light emitted by the first linear light source 121 passes through the first gap 1101 and the third gap 1103 on the measurement frame 110 and reaches the first linear array camera 122, and the light emitted by the second linear light source 131 passes through the second gap 1102 and the fourth gap 1104 on the measurement frame 110 and reaches the second linear array camera 132. Further, both the first linear light source 121 and the second linear light source 131 use LED light sources arranged in rows.

[0043] In this way, the LED linear light source provides background white light for the shooting of raindrops. When the light passes through the first gap 1101, the second gap 1102, the third gap 1103, and the fourth gap 1104, the brightness of the illumination background can be increased, making the captured raindrop image clearer.

[0044] In one embodiment, the pixel of the linear array camera can reach 2048. In this way, the resolution of the obtained raindrop image can be improved.

[0045] In one embodiment, the shooting planes of the first linear array camera 122 and the second linear array camera 132 are both parallel to the horizontal plane, and there is a height difference between the shooting plane of the first linear array camera 122 and the shooting plane of the second linear array camera 132. In this way, due to the height difference between the shooting planes of the two linear array cameras, the time for shooting the same position on the raindrop is different. By comparing the different shooting times, the vertical falling speed of the raindrop can be measured more accurately.

[0046] In one embodiment, the measurement frame 110 is square, and the first linear light source 121 and the second linear light source 131 are respectively located outside adjacent sides of the measurement frame 110; the first linear array camera 122 and the second linear array camera 132 are located outside different sides of the measurement frame 110. In this way, it can be ensured that the light emitted by the first linear light source 121 and the second linear light source 131 enters the measurement area 111 from different directions in the horizontal direction. Furthermore, the first linear array camera 122 and the second linear array camera 132 can obtain image information of different sides of the raindrop. It can be understood that there is a certain blank area between the inside of the box body 100 and the outside of the measurement frame 110, and the first linear light source 121, the second linear light source 131, the first linear array camera 122, and the second linear array camera 132 are all located in this blank area.

[0047] In one embodiment, the first measurement component 120 further includes a first reflector 123 with an adjustable reflection angle, and the second measurement component 130 further includes a second reflector 133 with an adjustable reflection angle; the first linear array camera 122 receives the light emitted by the first linear array light source 121 through the first reflector 123, and the second linear array camera 132 receives the light emitted by the second linear array light source 131 through the second reflector 133; the light emitted by the first linear array light source 121 is perpendicular to the light emitted by the second linear array light source 131. By adjusting the angle of the reflector, the angle at which the light emitted by the linear array light source is incident on the reflector can be adjusted, so that the light emitted by the linear array light source is reflected onto the linear array camera after passing through the reflector. In this way, the structure of the measurement frame 110, the linear array light source, and the linear array camera can be made more compact, reducing the volume of the raindrop spectrometer 10.

[0048] Refer to Figures 4 to 7 As shown, in one embodiment, the box body 100 has a bottom plate 101. The first measurement component 120 further includes a first mounting seat 124. The first mounting seat 124 includes a first fixing plate 1241, a first connecting plate 1242, a first elastic member 1243, and a first fastener 1244. The first linear array camera 122 is fixedly connected to the first fixing plate 1241. The first connecting plate 1242 is mounted on the bottom plate 101. The first elastic member 1243 connects the first fixing plate 1241 and the first connecting plate 1242, and makes the first fixing plate 1241 and the first connecting plate 1242 tend to approach each other. One end of the first fastener 1244 is movably connected to the first fixing plate 1241, and the other end abuts against the first connecting plate 1242 to adjust the distance between the first fixing plate 1241 and the first connecting plate 1242; at the same time, the second measurement component 130 further includes a second mounting seat 134. The second mounting seat 134 includes a second fixing plate 1341, a second connecting plate 1342, a second elastic member 1343, and a second fastener 1344. The second linear array camera 132 is fixedly connected to the second fixing plate 1341. The second connecting plate 1342 is mounted on the bottom plate 101. The second elastic member 1343 connects the second fixing plate 1341 and the second connecting plate 1342, and makes the second fixing plate 1341 and the second connecting plate 1342 tend to approach each other. One end of the second fastener 1344 is movably connected to the second fixing plate 1341, and the other end abuts against the second connecting plate 1342 to adjust the distance between the second fixing plate 1341 and the second connecting plate 1342. In this way, by fixedly connecting the first linear array camera 122 to the first fixing plate 1241 of the first mounting seat 124 and fixedly connecting the second linear array camera 132 to the second fixing plate 1341 of the second mounting seat 134, the positions between the mounting seats of the two linear array cameras can be fixed, thereby avoiding mutual influence when the linear array cameras adjust the shooting angles.

[0049] It can be understood that, taking the first mounting seat 124 as an example, the first elastic member 1243 is located between the first fixing plate 1241 and the first connecting plate 1242. Due to the action of the force of the first elastic member 1243, the first fixing plate 1241 and the first connecting plate 1242 tend to approach each other. Then, the distance between the first fixing plate 1241 and the first connecting plate 1242 is adjusted and fixed by the first fastener 1244. Thus, the distance between the first fixing plate 1241 and the bottom plate 101 of the box body 100 can be adjusted, and the distance between the first linear array camera 122 and the bottom plate 101 of the box body 100 can also be adjusted. Further, by adjusting one or more of the first elastic members 1243, the inclination angle between the plane where the first fixing plate 1241 is located and the plane where the first connecting plate 1242 is located can be adjusted, so as to adjust the shooting plane of the first linear array camera 122. Further, both the first elastic member 1243 and the first fastener 1244 are three. In this way, the first fixing plate 1241 and the first connecting plate 1242 can be connected in the simplest and stable manner. Further, the above-mentioned first elastic member 1243 and second elastic member 1343 can use extension springs, elastic compression members, etc., and the above-mentioned first fastener 1244 can use bolts, etc. The setting of the second mounting seat 134 is the same as that of the first mounting seat 124, so it will not be described repeatedly.

[0050] Further, a first through hole 12411 is provided on the first fixing plate 1241. The first through hole 12411 is a threaded hole. The first fastener 1244 is provided with an external thread. A first limiting groove 12421 is provided on the first connecting plate 1242. One end of the first fastener 1244 extends out from the first through hole 12411 and abuts against the inside of the first limiting groove 12421. A second through hole 13411 is provided on the second fixing plate 1341. The second through hole 13411 is a threaded hole. The second fastener 1344 is provided with an external thread. A second limiting groove 13421 is provided on the second connecting plate 1342. One end of the second fastener 1344 extends out from the second through hole 13411 and abuts against the inside of the second limiting groove 13421. Taking the first mounting seat 124 as an example, it can be understood that the first limiting groove 12421 provides a holding site for the first fastener 1244. The external thread on the first fastener 1244 is in threaded cooperation with the first through hole 12411. By adjusting the length of the first fastener 1244 extending out of the first through hole 12411 of the first fixing plate 1241, a "holding" force for maintaining the distance between the first fixing plate 1241 and the first connecting plate 1242 is provided for the first fixing plate 1241 and the first connecting plate 1242. At the same time, the first elastic member 1243 applies a pulling force to the first fixing plate 1241 and the first connecting plate 1242 to make them approach each other. Thus, the first fixing plate 1241 and the first connecting plate 1242 are balanced under the action of the "pulling" force of the first elastic member 1243 and the "holding" force of the first fastener 1244, so as to provide a stable shooting plane for the first linear array camera 122. The setting of the second mounting seat 134 is the same as that of the first mounting seat 124, so it will not be described repeatedly here.

[0051] Further, in this embodiment, by changing the distance between the first fixing plate 1241 or the second fixing plate 1341 and the bottom plate 101 of the box body 100, the position of the linear array camera in the gravity direction can be changed, so that the shooting planes between the two linear array cameras are parallel and maintain a certain height difference.

[0052] Refer to Figure 8, in one embodiment, the raindrop spectrometer 10 further includes a cover body 200 and a splash-proof layer 300. The cover body 200 is located at the top of the box body 100, and the splash-proof layer 300 is provided on the cover body 200. Further, both the cover body 200 and the splash-proof layer 300 are provided with square holes 201, and the square holes 201 are correspondingly arranged with the measurement area 111 surrounded by the measurement frame 110. The size of the square holes 201 is the same as that of the measurement area 111, so that raindrops can fall into the measurement area 111 from the square holes 201. In this way, the cover body 200 and the splash-proof layer 300 can prevent rainwater from falling into the area outside the measurement frame 110 inside the box body 100, thereby avoiding the first measurement component 120 and the second measurement component 130 from being wetted by rainwater. By providing the splash-proof layer 300, when raindrops fall on the top surface of the cover body 200, the splash-proof layer 300 can prevent the raindrops from being splashed by the top surface of the cover body 200 and then falling into the measurement area 111 again.

[0053] Further, the cover body 200 can be opened relative to the box body 100, which is convenient for maintaining parts such as the linear light source, linear camera, and reflector inside the box body 100. Further still, the cover body 200 is rotatably connected to the box body 100 through a hinge 210. In this way, the opening and closing of the cover body 200 can be facilitated. In other embodiments, the cover body 200 and the box body 100 can be connected by means of interference fit, snap connection, etc. Further still, an air strut 220 is also provided between the cover body 200 and the box body 100. In this way, the fixing of the cover body 200 can be facilitated.

[0054] In one embodiment, the top surface of the cover body 200 is inclined relative to the horizontal plane. In this way, rainwater can be prevented from accumulating on the cover body 200, and raindrops can be prevented from flowing into the measurement area 111 from the square holes 201. Further, a convex portion is provided at the edge of the square hole 201 of the cover body 200. In this way, during the process of raindrops flowing back to the ground from the top surface of the cover body 200, the convex portion serves as an obstacle for raindrops flowing into the interior of the measurement area 111 and can prevent raindrops from entering the measurement area 111.

[0055] In one embodiment, when the splash-proof layer 300 is provided, the splash-proof layer 300 is inclined relative to the horizontal plane. In this way, rainwater can be prevented from accumulating on the splash-proof layer 300, thereby ensuring that raindrops can flow to the ground from the splash-proof layer and avoiding raindrops from entering the measurement area 111.

[0056] Further, there is a gap between the splash-proof layer 300 and the cover body 200; in this way, raindrops falling on the splash-proof layer 300 can be prevented from being splashed, and it is ensured that the raindrops falling on the splash-proof layer 300 flow back to the ground smoothly through this gap, thereby avoiding raindrops from flowing into the measurement area 111.

[0057] In one embodiment, it further includes a heating element, which is disposed between the cover 200 and the splash-proof layer 300. In this way, when there is snow accumulation on the splash-proof layer 300, the heating element can be used to heat and melt the snow on the top.

[0058] In one embodiment, the splash-proof layer 300 is a honeycomb-shaped plate. Refer to Figure 8 . In this way, when raindrops hit the honeycomb-shaped plate, they can quickly fall into the holes of the honeycomb-shaped plate. The honeycomb-shaped plate can completely absorb the raindrops landing on the splash-proof layer 300, making it difficult for the raindrops to scatter and splash. Thus, the honeycomb-shaped plate can achieve a good splash-proof effect. Moreover, the honeycomb-shaped structure also has the advantages of stable structure and convenient processing.

[0059] Furthermore, the material of the honeycomb-shaped plate is aluminum. In this way, even if the raindrop spectrometer 10 is exposed outdoors and subjected to long-term wind, sun, rain, etc., due to the good environmental adaptability of the aluminum material, it is not easy to age and deteriorate; and the aluminum material has good heat conduction effect. When the heating element generates heat, the aluminum material can well conduct the heat at the bottom to melt the snow on the top. In other embodiments, the material of the honeycomb-shaped plate can also be stainless steel, plastic, etc.

[0060] In one embodiment, the splash-proof layer 300 can also be a wire mesh, a plate with bristles, or an artificial turf layer.

[0061] In one embodiment, it further includes a rain sensor 140, which is disposed in the measurement area 111. The rain sensor 140 is used to detect whether there is rainfall. It can be understood that the raindrop spectrometer is also provided with a controller, and the controller is electrically connected to the rain sensor, the first measurement component, and the second measurement component respectively. When the rain sensor component detects rainfall, the controller controls the first measurement component and the second measurement component to open; when the rain sensor component detects no rainfall, the controller controls the first measurement component and the second measurement component to close. In this way, when there is no rainfall, the linear array light source and the linear array camera can be turned off, and when there is precipitation, the linear array light source and the linear array camera are turned on. In this way, the power consumption of the raindrop spectrometer 10 is reduced, the service life of the linear array light source and the linear array camera is extended, and in addition, it can also prevent insects from entering the measurement area 111 due to phototaxis, thereby avoiding interference with the measurement work of the raindrop spectrometer 10 caused by the activities of insects in the measurement area 111.

[0062] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0063] The above-described embodiments merely represent several implementation manners of the present application. The description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the patented application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all fall within the protection scope of the present application. Therefore, the patent protection scope of the present application shall be subject to the appended claims.

Claims

1. A raindrop spectrometer, comprising a housing (100) and a measuring frame (110) arranged inside the housing (100), wherein the measuring frame (110) encloses a measuring area (111) penetrating along a gravity direction, characterized in that: The raindrop spectrometer further comprises a first measuring component (120) and a second measuring component (130) which are arranged in the box (100); the first measuring component (120) and the second measuring component (130) are both located outside the measuring frame (110). The first measuring component (120) comprises a first linear array light source (121) and a first linear array camera (122); the second measuring component (130) comprises a second linear array light source (131) and a second linear array camera (132); The first line array camera (122) is rotatably mounted inside the box (100), and the second line array camera (132) is rotatably mounted inside the box (100). The light emitted by the first linear array light source (121) and the light emitted by the second linear array light source (131) can respectively enter the measurement area (111) from different directions on a horizontal plane and be emitted from opposite sides of the measurement area (111); the first linear array camera (122) is used to receive the light emitted by the first linear array light source (121) and passing through the measurement area (111); and the second linear array camera (132) is used to receive the light emitted by the second linear array light source (131) and passing through the measurement area (111).

2. The raindrop spectrometer according to claim 1, characterized in that: The shooting plane of the first line array camera (122) and the shooting plane of the second line array camera (132) are both parallel to the horizontal plane, and there is a height difference between the shooting plane of the first line array camera (122) and the shooting plane of the second line array camera (132).

3. The raindrop spectrometer according to claim 1, characterized in that: The measuring frame (110) is square in shape, and the first linear array light source (121) and the second linear array light source (131) are respectively located on the outsides of adjacent side surfaces of the measuring frame (110); The first line array camera (122) and the second line array camera (132) are located outside different sides of the measurement frame (110).

4. The raindrop spectrometer according to claim 1, characterized in that: The raindrop spectrometer further comprises a cover body (200) and a splash-proof layer (300); the cover body (200) is located on the top of the box body (100), and the splash-proof layer (300) is arranged on the cover body (200).

5. The raindrop spectrometer according to claim 4, characterized in that: There is a gap between the anti-splash layer (300) and the cover body (200); And / or, the splash-proof layer (300) is a honeycomb plate, a wire mesh, a plate with bristles, or an artificial turf layer.

6. The raindrop spectrometer according to claim 4, characterized in that: It also comprises a heating element, wherein the heating element is arranged between the cover body (200) and the anti-splash layer (300).

7. The raindrop spectrometer according to claim 1, characterized in that: The first measuring component (120) further comprises a first reflecting mirror (123) with an adjustable reflection angle, and the second measuring component (130) further comprises a second reflecting mirror (133) with an adjustable reflection angle; The first line array camera (122) receives light emitted by the first line array light source (121) through the first reflector (123), The second line array camera (132) receives the light emitted by the second line array light source (131) through the second reflector (133); The light emitted by the first linear array light source (121) is perpendicular to the light emitted by the second linear array light source (131).

8. The raindrop spectrometer according to claim 7, characterized in that: The box (100) has a bottom plate (101); the first measuring assembly (120) further comprises a first mounting seat (124); the first mounting seat (124) comprises a first fixing plate (1241), a first connecting plate (1242), a first elastic member (1243) and a first fastener (1244); the first line array camera (122) is fixedly connected to the first fixing plate (1241); the first connecting plate (1242) is mounted on the bottom plate (101); The first elastic member (1243) connects the first fixing plate (1241) and the first connecting plate (1242), and makes the first fixing plate (1241) and the first connecting plate (1242) tend to approach each other. One end of the first fastener (1244) is movably connected to the first fixing plate (1241), and the other end is abutted against the first connecting plate (1242) to adjust the distance between the first fixing plate (1241) and the first connecting plate (1242); The second measuring assembly (130) further comprises a second mounting base (134), the second mounting base (134) comprising a second fixing plate (1341), a second connecting plate (1342), a second elastic member (1343) and a second fastener (1344), the second line array camera (132) is fixedly connected to the second fixing plate (1341), and the second connecting plate (1342) is mounted on the bottom plate (101). The second elastic member (1343) connects the second fixing plate (1341) and the second connecting plate (1342), and makes the second fixing plate (1341) and the second connecting plate (1342) tend to approach each other. One end of the second fastener (1344) is movably connected to the second fixing plate (1341), and the other end is abutted against the second connecting plate (1342) to adjust the distance between the second fixing plate (1341) and the second connecting plate (1342).

9. The raindrop spectrometer according to claim 8, characterized in that: The first fixing plate (1241) is provided with a first through hole (12411), the first through hole (12411) is a threaded hole, the first fastener (1244) is provided with an external thread, the first connecting plate (1242) is provided with a first limiting groove (12421), one end of the first fastener (1244) extends out of the first through hole (12411) and abuts against the first limiting groove (12421); The second fixing plate (1341) is provided with a second through hole (13411), the second through hole (13411) is a threaded hole, the second fastener (1344) is provided with an external thread, the second connecting plate (1342) is provided with a second limiting groove (13421), and one end of the second fastener (1344) extends out from the second through hole (13411) and abuts against the second limiting groove (13421).

10. The raindrop spectrometer according to claim 1, characterized in that: It also includes a rain sensor (140), wherein the rain sensor (140) is arranged in the measurement area (111).

Images