Micro rain radar

Abstract

The invention discloses a micro rain radar, which comprises a mounting assembly, a fine tuning assembly and a rotating assembly, and is characterized in that the mounting assembly comprises a bracket, a platform arranged on the bracket, cross rods symmetrically arranged on two sides of the platform, a processor arranged at the top of the bracket, and a transceiver connected with the processor; according to the micro-rain radar, the offset angle of the antenna is changed through the fine tuning assembly, the micro-rain radar can be matched with a transceiver to calibrate the radar, meanwhile, rainwater can be conveniently discharged through inclination of the antenna, snow interference can be avoided through heating of the antenna in a snowy day, and most of snow can be poured out through the rotating assembly before heating; all accumulated snow does not need to be heated and melted, cleaning speed is increased, and electric power is saved.

Description

Technical Field

[0001] The invention relates to the technical field of radar measurement, and in particular to a light rain radar. Background Art

[0002] The light rain radar is one of the tools that can effectively observe important precipitation parameters such as the raindrop size spectrum, the terminal velocity of raindrops, and the vertical structure of precipitation intensity in the lower atmosphere. However, the light rain radar is easily interfered by environmental factors. For example, in areas with monitoring significance (such as mountainous areas where flash flood warnings are required, upstream of hydropower stations where water volume assessment is required, etc.), the terrain is often complex, the vegetation is lush, and there are complex and changeable environmental climates (such as fog interference, etc.). These factors will cause interference to the monitoring results of the light rain radar that cannot be ignored. The parabolic antenna is more likely to leave rain or snow on the surface of the dish, which will cause greater interference to the monitoring results. Therefore, a light rain radar is proposed. By fine-tuning the component to change the antenna bias angle, the radar can be calibrated with the receiver. At the same time, the antenna tilt can also facilitate the discharge of rainwater. When encountering snowy days, the antenna heating can avoid snow interference. Before heating, most of the snow can be poured out by rotating the component, and all the snow can be melted without heating, which speeds up the cleaning speed and saves electricity. Summary of the invention

[0003] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0004] In view of the above problems existing in the existing light rain radar, the present invention is proposed.

[0005] Therefore, an object of the present invention is to provide a light rain radar.

[0006] To solve the above technical problems, the present invention provides the following technical solutions: a light rain radar measurement component, an installation component, including a bracket, a platform arranged on the bracket, a cross bar symmetrically arranged on both sides of the platform, a processor arranged on the top of the bracket, and a receiver connected to the processor; a fine-tuning component symmetrically arranged on both sides of the bracket, including a mounting frame, a first motor arranged on the mounting frame, a double gear connected to the first motor, a chain respectively connected to the double gears, a gear connected to the chain, a threaded rod connected to the gear, a slide groove symmetrically arranged on both sides of the mounting frame, a slider arranged in the slide groove, a support platform rotatably connected to the slider, a support frame rotatably connected to the support platform, and an antenna arranged on the support platform; a rotating component connected to the mounting frame, including a connecting rod fixed to the mounting frame, a worm gear arranged on the connecting rod, an outer cylinder sleeved on the outside of the cross bar, a worm meshing with the worm gear, and a second motor connected to the worm gear.

[0007] As a preferred solution of the light rain radar of the present invention, wherein: placement racks are also arranged on both sides of the bracket, the placement racks are arranged under the platform, the processor generates a radar transmission modulation signal and transmits it to the receiver, the processor analyzes the backscattered received signal and calculates the Doppler spectrum, and transmits the spectrum to the host computer; the receiver is hinged to the bracket.

[0008] As a preferred solution of the light rain radar described in the present invention, wherein: the first motor output shaft is fixedly connected to a double gear, the double gear includes two second gears arranged in parallel and spaced apart, the second gears are respectively connected to one of the chains, and each of the chains is also connected to a gear.

[0009] As a preferred solution of the light rain radar of the present invention, the threaded rod is rotatably connected to the mounting frame, the threaded rod is arranged in a slide groove, the slider is embedded in the slide groove, and the slider is slidably connected to the slide groove.

[0010] As a preferred solution of the light rain radar described in the present invention, the two ends of the bottom of the support platform are respectively rotatably connected to the slider, the support frame is symmetrically arranged on both sides of the mounting frame, one end of the support frame is rotatably connected to the mounting frame, and the other end of the support frame is rotatably connected to the middle of the support platform.

[0011] As a preferred solution of the light rain radar of the present invention, the antenna is used to transmit radar signals and receive backscattered signals.

[0012] As a preferred solution of the light rain radar of the present invention, one end of the connecting rod is fixedly connected to the mounting frame, the other end is provided with the outer cylinder, and the worm gear is provided on the connecting rod portion.

[0013] As a preferred solution of the light rain radar of the present invention, the outer cylinder is rotatably connected to the cross bar.

[0014] As a preferred solution of the light rain radar of the present invention, the second motor is fixedly arranged on the placement rack, and the output shaft of the second motor is fixedly connected to the worm.

[0015] As a preferred solution of the light rain radar of the present invention, the sliding block is also connected to the threaded rod through threads.

[0016] Beneficial effects of the present invention: The light rain radar in the present invention changes the antenna bias angle through a fine-tuning component, and can cooperate with the receiver to calibrate the radar. At the same time, the antenna tilt can also facilitate the drainage of rainwater. When encountering snowy days, antenna heating can be used to avoid snow interference. Before heating, most of the snow can be poured out by rotating the component, and there is no need to heat to melt all the accumulated snow, which speeds up the cleaning speed and saves electricity. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them: Figure 1 It is a schematic diagram of the overall structure of the light rain radar of the present invention.

[0018] Figure 2 The figure is a side view of the overall structure of the light rain radar of the present invention.

[0019] Figure 3 It is a schematic diagram of the structure of the fine-tuning component of the light rain radar of the present invention.

[0020] Figure 4 It is a schematic diagram of the fine-tuning components of the light rain radar of the present invention excluding the antenna.

[0021] Figure 5 This is a view of the fine-tuning component of the light rain radar of the present invention excluding the outer side of the antenna.

[0022] Figure 6 This is a top view of the fine-tuning components of the light rain radar of the present invention excluding the antenna.

[0023] Figure 7 It is a schematic diagram of the double gears of the light rain radar of the present invention.

[0024] Figure 8 It is a schematic diagram of a slider of the light rain radar of the present invention.

[0025] Fig. 9 It is a schematic diagram of the platform and crossbar of the light rain radar of the present invention.

[0026] Fig.10 It is a schematic diagram of the rotating assembly of the light rain radar of the present invention. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0028] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0030] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0031] Example 1 Reference Figures 1 to 7The present invention discloses a light rain radar, including a mounting assembly 100, a fine-tuning assembly 200 and a rotating assembly 300, wherein the mounting assembly 100 includes a bracket 101, a platform 102 arranged on the bracket 101, a crossbar 103 symmetrically arranged on both sides of the platform 102, a processor 104 arranged on the top of the bracket 101, and a transceiver 105 connected to the processor 104; the fine-tuning assembly 200 is symmetrically arranged on both sides of the bracket 101, including a mounting frame 201, a first motor 202 arranged on the mounting frame 201, a double gear 203 connected to the first motor 202, a chain 204 respectively connected to the double gear 203, and a chain 205 connected to the chain 206. 04, a gear 205 connected to the mounting frame 201, a threaded rod 206 connected to the gear 205, slide grooves 207 symmetrically arranged on both sides of the mounting frame 201, a slider 208 arranged in the slide groove 207, a support platform 209 rotatably connected to the slider 208, a support frame 210 rotatably connected to the support platform 209, and an antenna 211 arranged on the support platform 209; a rotating assembly 300, which is connected to the mounting frame 201, includes a connecting rod 301 fixed to the mounting frame 201, a worm gear 302 arranged on the connecting rod 301, an outer cylinder 303 sleeved on the outside of the cross bar 103, a worm 304 meshing with the worm gear 302, and a second motor 305 connected to the worm 304.

[0032] The working principle of the light rain radar is that the light rain radar simultaneously obtains quantitative rainfall, water drop size distribution, radar reflectivity, drop speed and other rainfall parameters from the vertical section on the radar. Its electromagnetic radiation frequency is 24.230 GHz, modulated by 0.5~15 MHz according to the height resolution (such as 100 meters-10 meters). The radiation will be transmitted vertically into the atmosphere, and a small part of it will be dispersed into the antenna by raindrops or other forms of precipitation.

[0033] Due to the falling speed of raindrops falling on antenna 211, there is a frequency deviation (Doppler frequency) between the transmitted signal and the received signal. This frequency is a way to measure the falling speed of raindrops. Since water droplets of different diameters have different falling speeds, the backscattered signal consists of different Doppler frequency distributions. Spectral analysis of the received signal produces a power spectrum, which is distributed over a series of frequency lines corresponding to the Doppler frequency of the signal.

[0034] The radar control processor 104 determines the high resolution of this power spectrum (10 times per second) and sends the average power spectrum to the connected host PC every 10 seconds. Based on the calibration parameters of the radar module, the reflectivity spectrum is calculated. The drop spectrum (or drop size distribution) is derived using the known relationship between the drop velocity, raindrop size and scattering cross section. Taking into account further correction conditions, the entire drop size distribution is integrated and then averaged over 10 to 3600 seconds to deduce the rainfall and liquid water content. The output signal of the radar is continuously transmitted, and the sawtooth modulation of the linearly reduced transmission signal makes it possible to perform profile measurements with selectable range resolution.

[0035] Antenna 211 is used to transmit radar signals and receive backscattered signals. Antenna 211 is designed as an offset parabolic antenna with a diameter of 60 cm and a beam width of 1.5°. Due to the design of parabolic antenna 211, rainwater can be drained. For antenna installation, the parabolic dish will be installed on a support platform 209 with an adjustable angle to facilitate angle adjustment. The transceiver 105 is fixed to the bracket 101 by a hinge, and its structure ensures that the position and angle of the transceiver 105 can be adjusted.

[0036] The processor 104 is connected to the transceiver 105 through two SMAs extending from the back through RF coaxial cables. The processor 104 generates a radar transmission modulation signal and transmits it to the transceiver 105. It analyzes the backscattered received signal, calculates the Doppler spectrum and transmits the average power spectrum (called the "raw spectrum") to the host PC where these spectra are interpreted and executed.

[0037] Example 2 Reference Figures 1 to 8 , which is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that: a placing rack 101a is also arranged on both sides of the bracket 101, and the placing rack 101a is arranged below the platform 102. The output shaft of the first motor 202 is fixedly connected to the double gear 203, and the double gear 203 includes two second gears 203a arranged in parallel and spaced apart. The second gear 203a is respectively connected with a chain 204, and each chain 204 is also connected with a gear 205. The threaded rod 206 is rotatably connected with the mounting frame 201, and the threaded rod 206 is arranged in the slide groove 207. The slider 208 is embedded in the slide groove 207, and the slider 208 is slidably connected with the slide groove 207. The two ends of the bottom of the support platform 209 are respectively rotatably connected with the slider 208, and the support frame 210 is symmetrically arranged on both sides of the mounting frame 201, one end of the support frame 210 is rotatably connected with the mounting frame 201, and the other end of the support frame 210 is rotatably connected with the middle of the support platform 209.

[0038] Compared with Example 1, in order to facilitate changing the offset angle of the antenna 211, the first motor 202 is started, and the output shaft of the first motor 202 drives the fixedly connected double gear 203 to rotate synchronously. Since the rotation of the two second gears 203a on the double gear 203 drives the two connected chains 204 to transmit, the chains 204 will respectively drive the gears 205 to rotate. Since the gear 205 is fixedly connected to the threaded rod 206, and the threaded rod 206 is rotatably connected to the mounting frame 201, the first motor 202 can drive the threaded rod 206 to rotate on the mounting frame 201. The threaded rod 206 is not threadedly connected to the mounting frame 201, so the threaded rod 206 is only rotating, and the slider 207 disposed in the slide groove 207 is not rotating. 08 is connected to the threaded rod 206 by threads, so when the first motor 202 is driven, the threaded rod 206 can rotate to move the slider 208 in the slide groove 207. Taking the movement of the slider 208 toward the first motor 202 as an example, the movement of the slider 208 will shorten the distance between the slider 208 and the bottom of the support frame 210, so that the angle formed by the support platform 209 and the support frame 210 is gradually reduced, that is, the support platform 209 gradually lifts the antenna 211, changes the offset angle of the antenna 211, and calibrates with the transceiver 105. At the same time, the inclined surface of the antenna 211 is also convenient for draining rainwater, ensuring that the reflecting surface is clean, so that the transmission and reception calibration of the antenna 211 is accurate.

[0039] The remaining structures are the same as those of Example 1.

[0040] Example 3 Reference Figures 1 to 10 , which is the third embodiment of the present invention, and this embodiment is different from the second embodiment in that one end of the connecting rod 301 is fixedly connected to the mounting frame 201, and the other end is provided with an outer cylinder 303, and the worm gear 302 is provided on the rod portion of the connecting rod 301. The outer cylinder 303 is rotatably connected to the crossbar 103. The second motor 305 is fixedly provided on the placement frame 101a, and the output shaft of the second motor 305 is fixedly connected to the worm 304.

[0041] Compared with Example 2, in order to deal with the problem of snow on the reflecting area of ​​the antenna 211, the snow can be melted by heating the antenna 211, but it takes a long time to heat and melt all the snow on the reflecting surface, and more electricity is required. Therefore, a rotating component 300 is provided, and the worm 304 connected to it is driven by the second motor 305. The rotation of the worm 304 can rotate the worm wheel 302 meshing with it; here, the entire mounting frame 201 is fixedly connected to one end of the connecting rod 301, and the other end of the connecting rod 301 is rotatably connected to the cross bar 103 through the outer cylinder 303, so the mounting frame 201 and all its fine-tuning components 200 are connected by the connecting rod 301. The connecting rod 301 is arranged on one side of the bracket 101, and a worm gear 302 is also arranged on the connecting rod 301. According to the self-locking of the worm gear 302 and the worm 304, the connecting rod 301 will not be separated from the cross bar 103. When the second motor 305 is started, the worm gear 302 rotates to rotate the entire connecting rod 301, that is, the mounting frame 201 rotates, causing the antenna 211 to tip over, thereby pouring out most of the snow on the reflecting surface, and then it can be reset by the second motor 305, and then the antenna can be used to heat only the snow and ice particles that have not been poured out on the surface, which greatly speeds up the snow processing speed and also saves a lot of electricity required for heating.

[0042] The remaining structure is the same as that of Example 2.

[0043] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A light rain radar, characterized in that: include, An installation assembly (100) comprising a bracket (101), a platform (102) arranged on the bracket (101), crossbars (103) symmetrically arranged on both sides of the platform (102), a processor (104) arranged on the top of the bracket (101), and a transceiver (105) connected to the processor (104); A fine-tuning assembly (200) is symmetrically arranged on both sides of the bracket (101), comprising a mounting frame (201), a first motor (202) arranged on the mounting frame (201), a double gear (203) connected to the first motor (202), a chain (204) respectively connected to the double gear (203), a gear (205) connected to the chain (204), a threaded rod (206) connected to the gear (205), a slide groove (207) symmetrically arranged on both sides of the mounting frame (201), a slider (208) arranged in the slide groove (207), a support platform (209) rotatably connected to the slider (208), a support frame (210) rotatably connected to the support platform (209), and an antenna (211) arranged on the support platform (209); A rotating assembly (300) is connected to the mounting frame (201), comprising a connecting rod (301) fixed to the mounting frame (201), a worm gear (302) disposed on the connecting rod (301), an outer cylinder (303) sleeved outside the crossbar (103), a worm (304) meshing with the worm gear (302), and a second motor (305) connected to the worm gear (304).

2. The light rain radar according to claim 1, characterized in that: Placement racks (101a) are also provided on both sides of the bracket (101), and the placement racks (101a) are arranged below the platform (102). The processor (104) generates a radar transmission modulation signal and transmits it to the transceiver (105). The processor (104) analyzes the backscattered reception signal and calculates the Doppler spectrum, and transmits the spectrum to a PC host computer. The transceiver (105) is hinged to the bracket (101).

3. The light rain radar as claimed in claim 2, characterized in that: The output shaft of the first motor (202) is fixedly connected to the double gear (203); the double gear (203) comprises two second gears (203a) arranged in parallel and spaced apart; the second gears (203a) are respectively connected in cooperation with one of the chains (204); and each of the chains (204) is also connected in cooperation with a gear (205).

4. The light rain radar as claimed in claim 3, characterized in that: The threaded rod (206) is rotatably connected to the mounting frame (201), the threaded rod (206) is disposed in a slide groove (207), the slider (208) is embedded in the slide groove (207), and the slider (208) is slidably connected to the slide groove (207).

5. The light rain radar as claimed in claim 4, characterized in that: The two ends of the bottom of the support platform (209) are respectively rotatably connected to the slider (208); the support frame (210) is symmetrically arranged on both sides of the mounting frame (201); one end of the support frame (210) is rotatably connected to the mounting frame (201); and the other end of the support frame (210) is rotatably connected to the middle of the support platform (209).

6. The light rain radar according to claim 5, characterized in that: The antenna (211) is used to transmit radar signals and receive backscattered signals.

7. The light rain radar according to claim 6, characterized in that: One end of the connecting rod (301) is fixedly connected to the mounting frame (201), and the other end is provided with the outer cylinder (303). The worm gear (302) is arranged on the rod portion of the connecting rod (301).

8. The light rain radar according to claim 7, characterized in that: The outer cylinder (303) is rotatably connected to the cross bar (103).

9. The light rain radar according to claim 8, characterized in that: The second motor (305) is fixedly arranged on the placement frame (101a), and the output shaft of the second motor (305) is fixedly connected to the worm (304).

10. The light rain radar according to claim 9, characterized in that: The slider (208) is also connected to the threaded rod (206) via threads.

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