Laser measurement system for cloud cover observation and working method

Abstract

The invention relates to a laser measurement system for cloud cover observation. The laser measurement system comprises a basic bearing shell and a scanning measurement unit arranged at the top of the basic bearing shell, an external lens is arranged on one end face of the scanning measurement unit; the device is characterized by further comprising a shielding self-cleaning assembly; the shielding self-cleaning assembly comprises a bearing pipe, a cleaning belt and an air pump. According to the laser measurement system for cloud cover observation, the technical problems that in the prior art, a laser radar device is tedious to use, easy to clean and not timely, wet dust is difficult to remove, and a lens is easy to scratch and damage in the cleaning process are effectively solved; therefore, the technical effects that the laser measurement system for cloud cover observation is convenient to use, and the lens can be automatically and thoroughly cleaned at regular time without being scratched and damaged are achieved.

Description

Technical Field

[0001] The invention relates to a laser measurement system and a working method for cloud cover observation, belonging to the technical field of meteorological equipment. Background Art

[0002] The laser measurement system for cloud observation uses lidar technology to measure the target distance by emitting light pulses to the target and then measuring the reflected signal; it can be used to measure the height, structure, density and other properties of clouds and can provide very accurate measurement results; it is suitable for all weather conditions and is therefore widely used in meteorology, climate research and weather forecasting.

[0003] LiDAR equipment (equipment that uses LiDAR technology) consists of a laser transmitter, a receiver and a data processing system; by measuring the laser beam against the laser beam reflected by particles in the cloud, the height and cloud amount of the cloud can be accurately measured.

[0004] Due to work needs, the laser measurement system used for cloud observation needs to operate outdoors. After long-term use, the lens will be contaminated by dust, rain, fog, oil, etc., and needs to be cleaned and maintained regularly to ensure performance and accuracy; if only manual cleaning is used, it will be time-consuming, labor-intensive, inefficient, and relatively labor-intensive. The location of the lens will make cleaning difficult and the cleaning process will be highly dangerous. It is also easy for the cleaning process to be untimely, affecting the detection effect; if only a gas nozzle is used to regularly spray air towards the lens to clean it, it can only remove the floating dust on the lens; if a robotic arm is used to drive a cleaning cloth to wipe the lens, it is easy for the lens to be scratched and damaged due to dust that is difficult to blow off the lens and dust particles on the cleaning cloth. Summary of the invention

[0005] In order to overcome the problems in the prior art, the present invention proposes a laser measurement system and working method for cloud cover observation, which solves the problems in the prior art that the laser radar device is cumbersome to use, easy to be cleaned in time, moist dust is difficult to remove, and the lens is easily scratched and damaged during the cleaning process.

[0006] In order to solve the above technical problems, one of the technical solutions proposed in the present invention is: a laser measurement system for cloud cover observation, comprising: a basic bearing shell and a scanning measurement unit arranged on the top of the basic bearing shell; an external lens is provided on one end surface of the scanning measurement unit; and a shielding self-cleaning component is also included; The shielding self-cleaning assembly comprises: a carrying tube, a cleaning belt and an air pump; The carrying tube sleeve is arranged outside the external lens; the cleaning belt is located outside the carrying tube sleeve and can cover the end opening of the carrying tube, and the two ends are respectively carried by a winding roller and a releasing roller; the winding roller and the releasing roller are respectively arranged on both sides of the carrying tube; a plurality of through holes are arranged at intervals on the cleaning belt; the through holes are larger than the end opening of the carrying tube; a wiping cloth is fixed between the two through holes on the cleaning belt; The end surface of the scanning and measuring unit between the supporting tube and the external lens is provided with a plurality of air holes; the air holes are connected to the air pump, and the air holes can inhale or exhale air by controlling the air pump.

[0007] A further improvement of the above scheme is that: the surface of the cleaning belt facing the external lens has a self-adhesive sticker; and the cleaning belt is made of an elastic material.

[0008] A further improvement of the above scheme is that: the air holes are all connected to distribution valves, which can independently adjust the air volume of the air holes.

[0009] A further improvement of the above scheme is that: a plurality of adsorption grooves are provided on the end surface of the supporting tube; and the adsorption grooves are connected to the air pump.

[0010] A further improvement of the above scheme is that the cleaning belt is a double-layer structure, with two layers of belt bodies fixed at the edges to form a flat tube shape.

[0011] A further improvement of the above scheme is that: a plurality of puncturing and gas injection nozzles are provided on the inner side wall of the supporting tube; the puncturing and gas injection nozzles are connected to the air pump; and the puncturing and gas injection nozzles can extend into the cleaning belt and inject gas.

[0012] A further improvement of the above scheme is that: a plurality of side spray heads are provided on the inner side wall of the supporting tube; the side spray heads are connected to the liquid pump assembly and can spray liquid onto the external lens.

[0013] A further improvement of the above scheme is that: a plurality of puncturing and liquid injection nozzles are provided on the inner side wall of the carrier tube; the puncturing and liquid injection nozzles are connected to the liquid pump assembly; and the puncturing and liquid injection nozzles can extend into the cleaning belt and inject liquid.

[0014] A further improvement of the above scheme is that both the puncturing gas injection nozzle and the puncturing liquid injection nozzle have a heating melting head for destroying a layer on the inner side of the cleaning belt.

[0015] In order to solve the above technical problems, the present invention proposes a second technical solution: the working method of the laser measurement system for cloud cover observation in the above technical solution includes the following steps: Step 1: A through hole on the cleaning belt is coaxial with the external lens, and the laser measurement system works normally; Step 2: When cleaning, the reel-up roller and the release roller rotate, and the cleaning belt runs accordingly, so that the cleaning belt between the two through holes covers the end of the supporting tube; Step 3: Control the air pump to draw air from the carrier tube through the air holes so that the cleaning belt gradually clings to the inner wall of the carrier tube and the external lens; then release air through the air holes so that the cleaning belt is reset; and dust cleaning is performed in this way; Step 4: The reeling roller and the release roller rotate and operate again, so that the wiping cloth moves to the end of the supporting tube; Step 5: Air is sucked from the carrier tube through the air hole so that the cleaning belt is deformed under the negative pressure, thereby making the wiping cloth closely attached to the external lens; Step 6: Adjust the air holes several times to allow air to enter and exhaust, so as to achieve the wiping action of the wiping cloth on the external lens; Step 7: Then, the cleaning belt is reset by releasing air through the air holes; Step 8: The reel-up roller and the release roller are rotated so that the next through hole of the cleaning belt is coaxial with the external lens.

[0016] The laser measurement system and working method for cloud amount observation provided by the present invention optimize and improve the laser measurement system for cloud amount observation in the prior art, add a shielding self-cleaning component near the lens of the lens, use negative pressure to drive the deformation of the cleaning belt to achieve dust removal, and use air pressure to drive the displacement of the cleaning belt close to the lens to achieve lens scrubbing; effectively solve the technical problems in the prior art that the laser radar device is cumbersome to use, easy to be cleaned untimely, moist dust is difficult to remove, and the lens is easily scratched and damaged during the cleaning process; thereby achieving the technical effect that the laser measurement system for cloud amount observation is easy to use, can automatically and regularly clean the lens more thoroughly, and will not scratch or damage the lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below in conjunction with the accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the overall appearance and structure of the laser measurement system used for cloud cover observation.

[0019] Figure 2 This is a schematic diagram of the structure of the scanning measurement unit.

[0020] Figure 3 A schematic diagram showing the positional relationship between the shielded self-cleaning component and the scanning measurement unit.

[0021] Figure 4 Schematic diagram of the positional relationship between the carrier tube and the scanning measurement unit.

[0022] Figure 5It is a schematic diagram of the positional relationship of various components on the load-bearing end face.

[0023] Figure 6 A simplified structural diagram showing the connectivity of the various components of the self-cleaning assembly.

[0024] Figure 7 It is a schematic diagram of the deformation state of the cleaning belt when the inlet and outlet holes are releasing air.

[0025] Figure 8 Schematic diagram of the deformation state of the cleaning belt when the inlet and outlet air hole groups are evacuated.

[0026] Fig. 9 A schematic diagram of the structure of a cleaning belt.

[0027] Fig.10 This is a schematic diagram of the positional relationship between the cleaning belt and the wiping cloth on it when the inlet and outlet air hole groups are pumping air.

[0028] Fig.11 This is a schematic diagram of the structure of the gas distribution component of the first structure.

[0029] Fig.12 This is a schematic diagram of the structure of the gas distribution component of the second structure.

[0030] Fig.13 This is a schematic diagram of the appearance structure of the gas distribution component of the second structure.

[0031] Fig.14 The figure is a simplified diagram of the structure of a flat tubular cleaning belt.

[0032] Fig.15 It is a schematic diagram of the positional relationship between the puncture gas injection nozzle and the puncture liquid injection nozzle.

[0033] Fig.16 A schematic diagram of the layout of the heating and melting head that punctures the gas injection nozzle.

[0034] Fig.17 It is a schematic diagram of the flat tubular cleaning belt after being filled with liquid.

[0035] In the figure: basic bearing shell 100, scanning measurement unit 200, bearing bracket 210, bearing shell 220, bearing end face 221, external lens 222, inlet and outlet air hole group 223, heating puncture body 224, bearing tube 310, air storage annular cavity 311, adsorption fixing groove 312, belt-shaped cleaning component 320, reversing roller 321, winding roller 322, releasing roller 323, cleaning belt 324, belt body through hole 3 25. Wiping cloth 326, piercing gas injection nozzle 330, heating melting head 331, piercing liquid injection nozzle 340, gas pumping assembly 350, liquid pumping assembly 360, gas distribution assembly 370, gas main pipe 371, gas branch pipe 372, hose part 373, carrier 374, mounting groove 375, sliding guide rail 376, sliding block 377, pressure rolling wheel 378, rotating carrier ring 379, gas heating assembly 380. DETAILED DESCRIPTION

[0036] Example 1: Figures 1 to 6 As shown, the laser measurement system for cloud cover observation of this embodiment 1 includes: a basic supporting shell 100, a scanning measurement unit 200, a data processing system, a shielding self-cleaning component, a power component and a control unit.

[0037] The basic bearing shell 100 is a hard shell fixed on the ground to play the role of containing and supporting.

[0038] The scanning measurement unit 200 measures the cloud cover by using the laser radar principle, is positioned on the top of the basic bearing shell 100, and includes a bearing bracket 210, a bearing shell 220, a laser transmitter and a laser receiver.

[0039] The bearing bracket 210 is in a plate shape, a rod shape or a frame structure, and is positioned on the top of the basic bearing shell 100 to bear and support the bearing shell 220 .

[0040] The carrying shell 220 is a cylindrical hard shell, which is connected to the carrying bracket 210 and rotates around its width direction, and rotates under the control of the control unit.

[0041] The laser transmitter, the laser receiver and the data processing system are all positioned inside the carrying housing 220 .

[0042] For the convenience of description, the end face of the carrying shell 220 with the lens is defined as a carrying end face 221, and the lens positioned on the carrying end face 221 is defined as an external lens 222; a through hole for positioning the external lens 222 is provided on the carrying end face 221, and the edge of the external lens 222 is fixed on the edge of the through hole; the external lens 222 plays the role of light transmission, dust isolation and water isolation.

[0043] The power assembly is used to provide power for the operation of the various components of the laser measurement system for cloud cover observation in this application; the control unit plays the role of controlling the coordinated operation of the various components of the laser measurement system for cloud cover observation, and is preferably a combination of a programmable logic controller and control buttons; the laser transmitter, laser receiver, external lens 222, data processing system, power assembly and control unit are all prior art and will not be described in detail here.

[0044] The shielded self-cleaning assembly is used to automatically clean the external lens 222 at regular intervals, and includes a supporting tube 310 , a belt-shaped cleaning assembly 320 , a pumping assembly 350 and a gas distribution assembly 370 .

[0045] The supporting tube 310 is a hard straight circular tube, the axial length of which is 0.4 to 0.6 times of its inner diameter, and the inner diameter of which is more than 1.5 times of the diameter of the external lens 222 (if the external lens 222 is rectangular, the inner diameter of the supporting tube 310 is more than 1.5 times of the diameter of the circumscribed circle of the external lens 222); one end of the supporting tube 310 is fixed on the supporting end face 221, and the axial direction of the supporting tube 310 is perpendicular to the supporting end face 221; the supporting tube 310 has a built-in annular gas storage annular cavity 311, which is annular, coaxial with the supporting tube 310 and serves as a gas passage; the gas storage annular cavity 311 is close to the supporting tube 310 away from the supporting end The end of the surface 221 is set; the end of the supporting tube 310 away from the supporting end surface 221 is provided with one or more rows of adsorption fixing grooves 312 arranged in a ring shape, the adsorption fixing grooves 312 are arc-shaped through grooves, the spacing between each other is less than 5 mm, and are connected to the air storage annular cavity 311; when the adsorption fixing grooves 312 are multiple rows, the multiple rows of adsorption fixing grooves 312 are staggered; when the air storage annular cavity 311 is in a negative pressure state due to the influence of pump air, the adsorption fixing grooves 312 adsorb and fix the belt-shaped cleaning component 320 close to it, so that the belt-shaped cleaning component 320, the supporting tube 310, the supporting end surface 221 and the external lens 222 together form a cylindrical closed space.

[0046] The belt-shaped cleaning assembly 320 is used to clean the outer lens 222 by its own deformation under the action of air pressure, and includes a reversing roller 321 , a winding roller 322 , a releasing roller 323 and a cleaning belt 324 .

[0047] The reversing roller 321 is used to reduce or avoid the friction between the cleaning belt 324 and the end of the supporting tube 310 during the movement. It is a cylindrical roller. There are two of them. The two reversing rollers 321 are coaxial and symmetrically arranged, respectively located on both sides of the supporting tube 310, and are directly or indirectly connected to the supporting tube 310 for rotation. The width of the reversing roller 321 is approximately the same as the width of the cleaning belt 324, and the axial direction is perpendicular to the axial direction of the supporting tube 310. When the supporting shell 220 is vertical and the supporting end face 221 is located at the top of the supporting shell 220, the top surface of the reversing roller 321 is 2 mm to 4 mm higher than the top surface of the supporting tube 310.

[0048] The winding roller 322 and the releasing roller 323 are both cylindrical rollers with built-in micro motors and are rotatably connected to the side wall of the supporting tube 310 or the side wall of the supporting shell 220. They rotate around their own axes under the control of the control unit. The axial directions of the winding roller 322 and the releasing roller 323 are the same as those of the reversing rollers 321 and are respectively arranged close to the two reversing rollers 321, and are respectively used to wind up and release the cleaning belt 324.

[0049] The cleaning belt 324 is an elastic belt made of rubber material with a thickness of less than 3 mm. The side close to the supporting tube 310 is coated with self-adhesive tape. The two ends are respectively wound and positioned on the winding roller 322 and the releasing roller 323, and abut against the reversing roller 321. The width of the cleaning belt 324 is more than 1.3 times the diameter of the supporting tube 310.

[0050] like Fig. 9 As shown, a row of belt body through holes 325 are evenly spaced on the cleaning belt 324, and the belt body through holes 325 are through holes, and the diameter is greater than or equal to the inner diameter of the supporting tube 310; the spacing between the belt body through holes 325 is greater than three times the diameter of the belt body through holes 325; a wiping cloth 326 is fixed between two belt body through holes 325, and the wiping cloth 326 is a disposable lens wiping cloth; the wiping cloth 326 is a circular sheet, and the diameter is more than 1.1 times the diameter of the external lens 222 (if the external lens 222 is rectangular, the diameter of the wiping cloth 326 is more than 1.1 times the diameter of the circumscribed circle of the external lens 222).

[0051] An inlet and outlet air hole group 223 is provided on the annular surface between the supporting tube 310 and the external lens 222 on the supporting end surface 221. The inlet and outlet air hole group 223 is composed of 6 or more inlet and outlet air holes. The multiple inlet and outlet air holes are arranged in a ring shape on the supporting end surface 221 and are spatially close to the inner wall of the supporting tube 310.

[0052] Furthermore, a hard rod-shaped bracket for supporting the positioning and reversing roller 321 is provided on the outer side wall of the supporting tube 310 .

[0053] Preferably, the air inlet and outlet holes are straight grooves, which are radially arranged on the annular surface between the supporting tube 310 and the external lens 222 on the supporting end surface 221 .

[0054] Preferably, Fig.10 As shown, the wiping cloth 326 is fixed to the cleaning belt 324 by strong glue only at the center, and the other positions are fixed to the cleaning belt 324 by adhesive tape on the cleaning belt 324; therefore, the existence of the wiping cloth 326 will not have a significant impact on the expansion and contraction of the cleaning belt 324.

[0055] Preferably, both ends of the cleaning belt 324 are provided with tubular rollers, and the cleaning belt 324 is wound and positioned on the tubular rollers. The tubular rollers are detachably fixed on the winding roller 322 and the releasing roller 323 for easy replacement.

[0056] The pump air assembly 350 is a combination of an air pump, an air valve and an air delivery pipe, which is positioned in the base bearing shell 100 or the bearing shell 220, part of the air delivery pipe is connected to the air storage annular cavity 311, and part of the air delivery pipe is connected to the inlet and outlet air hole group 223, and operates under the control of the control unit to control the air pressure state in the air storage annular cavity 311 and the inlet and outlet air state of the inlet and outlet air hole group 223; The gas distribution assembly 370 is positioned on the gas supply pipe connected to the inlet and outlet gas hole group 223, and the structure is preferably a distribution valve for differentially controlling the inlet and outlet gas volume of each inlet and outlet gas hole at the same time.

[0057] Preferably, a gas heating component 380 is positioned on the gas pipe connected to the inlet and outlet hole group 223. The gas heating component 380 is used to control the temperature of the gas output from the inlet and outlet hole group 223. The structure is preferably an electric heating wire, which operates under the control of the control unit.

[0058] Considering that it is costly to use a distribution valve to control the inlet and outlet air volume of each inlet and outlet air hole at the same time; preferably, Fig.11As shown, the gas distribution assembly 370 includes a gas supply main pipe 371, a gas supply branch pipe 372, a carrier 374, a sliding guide rail 376, a sliding block 377 and a pressure rolling wheel 378; the gas supply main pipe 371 is connected to the pump gas assembly 350; the number of gas supply branch pipes 372 is the same as the number of inlet and outlet holes, one end of each is connected to the gas supply main pipe 371, and the other end is connected to one of the inlet and outlet holes; the carrier 374 is a hard rod body, fixed on the inner wall of the carrier shell 220, one side of which is provided with a row of placement grooves 375 along the length direction of the carrier 374, and the surface is a plane; the placement grooves 375 are straight grooves, the spacing between each other is greater than 10 mm, the length direction is the same as the width direction of the carrier 374, and the whole is semi-cylindrical; the sliding guide rail 376 is a hard straight guide rail, fixed on the inner wall of the carrier shell 220, the length direction is the same as the length direction of the carrier 374 and close to the carrier 3 74 is provided with a receiving groove 375; the sliding block 377 is a hard straight rod, which slides along the length direction of the sliding guide rail 376 under the control of the control unit; the pressure rolling wheel 378 is positioned on the surface of the sliding block 377 close to the carrier 374, which is a cylindrical roller, and the number is 0.4 to 0.6 times the number of the gas branch pipes 372. Under normal circumstances, it is close to the surface provided with the receiving groove 375; the gas branch pipe 372 is arranged close to the receiving groove 375, and corresponds to the receiving groove 375 one by one; the gas branch pipe 372 is spliced ​​and combined by a hard pipe part and a hose part 373; the hard pipe part is a hard pipe body, and the hose part 373 is a rubber hose; the hose part 373 is close to the receiving groove 375; when the sliding block 377 moves, it drives the pressure rolling wheel 378 to move and then compresses part of the hose part 373 to deform it, thereby changing the local inner diameter of the hose part 373, thereby realizing differential control of the inlet and outlet air volume of different inlet and outlet holes at the same time.

[0059] Considering that it is costly to use a distribution valve to control the inlet and outlet air volume of each inlet and outlet air hole at the same time; preferably, Fig.12 and Fig.13As shown, the gas distribution assembly 370 includes a gas main pipe 371, a gas branch pipe 372, a carrier 374, a rotating carrier ring 379 and a pressure roller 378; the gas main pipe 371 is connected to the pump gas assembly 350; the number of gas branch pipes 372 is the same as the number of inlet and outlet holes, one end of each gas branch pipe is connected to the gas main pipe 371, and the other end is connected to one of the inlet and outlet holes; the carrier 374 is a hard circular plate, fixed on the inner wall of the carrier shell 220, and a row of placement grooves 375 are arranged in a ring shape on the side wall; the placement grooves 375 are straight grooves, the spacing between each other is greater than 10 mm, the length direction is the same as the thickness direction of the carrier 374, and the whole is semi-cylindrical; the rotating carrier ring 379 is a hard ring body, which is rotatably connected to the inner wall of the carrier shell 220 and is sleeved on the carrier 374, and rotates under the control of the control unit to rotate with the carrier The axis of the body 374 is coaxial; the spacing between the carrier 374 and the inner ring side wall of the rotating carrier ring 379 is greater than 3 cm; the pressure rolling wheel 378 is positioned on the inner ring side wall of the rotating carrier ring 379, and is a cylindrical roller. The number is 0.4 to 0.6 times the number of the gas branch pipes 372, and it is close to the side wall of the carrier 374 under normal conditions; the gas branch pipes 372 are arranged close to the placement grooves 375, and correspond to the placement grooves 375 one by one; the gas branch pipes 372 are spliced ​​and combined by a hard tube part and a soft tube part 373; the hard tube part is a hard tube body, and the soft tube part 373 is a rubber hose; the soft tube part 373 is close to the placement groove 375; when the rotating carrier ring 379 rotates, it drives the pressure rolling wheel 378 to move and then compress part of the soft tube part 373 to deform it, thereby changing the local inner diameter of the soft tube part 373, thereby achieving differential control of the inlet and outlet air volume of different inlet and outlet holes at the same time.

[0060] Preferably, the pressure roller 378 can be detachably positioned on the sliding block 377 or the rotating supporting ring 379, and the fixed position is adjustable.

[0061] The measurement method of the laser measurement system for cloud cover observation in this embodiment 1 is: 1. Under normal conditions, the laser measurement system for cloud cover observation in the present application measures cloud cover based on the laser radar principle, and the data processing system processes the measured data; one of the belt body through holes 325 of the cleaning belt 324 is coaxial with the supporting tube 310; 2. Setting the cleaning frequency of the external lens 222 according to the natural environment of the installation location (temperature, dust content in the air, temperature, etc.) (the frequency is set according to actual needs for the purpose of dust and mist removal); 3. Control the winding roller 322 and the releasing roller 323 to rotate and cover the end of the carrier tube 310; control the pump air assembly 350 to operate so that the adsorption fixed groove 312 adsorbs the cleaning belt 324 and then closes the space inside the carrier tube 310; 4. Such as Figure 7As shown, the hot air ejected from the air inlet and outlet holes 223 is controlled to heat the air in the carrier tube 310 through heat conduction, and a certain drying effect is achieved to facilitate the removal of dust; 5. As Figure 8 As shown, the air inlet and outlet holes group 223 is controlled to draw air from the carrier tube 310 so that the cleaning belt 324 is deformed under the action of negative pressure and gradually approaches the inner wall of the carrier tube 310, the carrier end surface 221 and the external lens 222; after the cleaning belt 324 is closely attached to the inner wall of the carrier tube 310, the carrier end surface 221 and the external lens 222, the air inlet and outlet holes group 223 is controlled to release air so that the cleaning belt 324 is reset (to clean the dust); the air pump assembly 350 is controlled to operate so that the adsorption fixing groove 312 stops adsorbing the cleaning belt 324; 6. Control the winding roller 322 and the releasing roller 323 to rotate, so that the wiping cloth 326 moves to the end of the supporting tube 310; control the pump air assembly 350 to operate, so that the adsorption fixed groove 312 adsorbs the cleaning belt 324 and thus closes the space inside the supporting tube 310; 7. Control the air inlet and outlet holes 223 to draw air from the supporting tube 310 so that the cleaning belt 324 is deformed under the negative pressure, thereby making the wiping cloth 326 close to the external lens 222; at this time, the cleaning belt 324 does not completely close the air inlet and outlet holes; 8. Adjust the air extraction volume per unit time of different air inlet and outlet holes, so that the air extraction volume of some consecutive air inlet and outlet holes is greater than that of other air inlet and outlet holes; change the air inlet and outlet holes with larger air extraction volume multiple times (i.e., increase the air extraction volume of several air inlet and outlet holes among other air inlet and outlet holes, and reduce the air extraction volume of the air inlet and outlet holes with larger air extraction volume originally); thereby realize the wiping action of the wiping cloth 326 on the external lens 222 (i.e., pull the cleaning belt 324 to move it by changing the suction force); the wiping action that can be performed can be increased by controlling the air inlet and outlet holes to exhaust air at the same time; 9. Control the air inlet and outlet hole group 223 to release air so that the cleaning belt 324 is reset; control the pump air assembly 350 to operate so that the adsorption fixed groove 312 stops adsorbing the cleaning belt 324; 10. Control the winding roller 322 and the releasing roller 323 to rotate so that one of the belt body through holes 325 of the cleaning belt 324 is coaxial with the supporting tube 310; Preferably, when performing step 4, the air inlet and outlet of the air inlet and outlet hole group 223 is intermittently controlled to lift the dust in the supporting tube 310, and the lifted dust will partially stick to the cleaning belt 324 during the floating process; this method is conducive to drying the dust in the space inside the supporting tube 310.

[0062] The technical solution in the above embodiment 1 has at least the following technical effects or advantages: The present invention solves the technical problems in the prior art that the laser radar device is cumbersome to use, easy to be uncleaned in time, moist dust is difficult to remove, and the lens is easily scratched and damaged during the cleaning process; the laser measurement system for cloud cover observation is easy to use, can automatically and regularly clean the lens more thoroughly, and will not scratch or damage the lens during the cleaning process.

[0063] Embodiment 2: In order to further improve the cleaning effect, in Embodiment 2, the structure of the cleaning belt 324 is optimized and improved on the basis of the above-mentioned Embodiment 1, and a puncturing gas injection nozzle 330 is additionally provided on the inner wall of the supporting tube 310 .

[0064] like Fig.14 and Fig.15 As shown, the cleaning belt 324 is a flat tubular elastic belt body (essentially a double-layer belt body with edges fixed together).

[0065] The belt body through hole 325 on the cleaning belt 324 penetrates the cleaning belt 324 , and the two layers of belt bodies near the edge of the belt body through hole 325 are fixed together (ie: the cleaning belt 324 forms a closed space as a whole after both ends are closed).

[0066] The puncture gas injection nozzle 330 is connected to the pump gas assembly 350, fixed on the inner wall of the supporting tube 310, and performs exhaust and suction under the control of the control unit.

[0067] Furthermore, the puncturing gas injection nozzle 330 is in the shape of a horizontally arranged cone or truncated cone, with a larger plane fixed on the inner wall of the supporting tube 310, and the air hole is located on the outer wall; a heating melting head 331 is provided at a position of the puncturing gas injection nozzle 330 away from the inner wall of the supporting tube 310; the heating melting head 331 is an electric heating wire or an electric heating plate, which is heated under the control of the control unit; the heating melting head 331 plays the role of timely melting and penetrating a layer of the cleaning tape 324 (debugging is required in actual use to determine the energy required for the heating melting head 331 to melt and penetrate a layer of the cleaning tape 324).

[0068] When the laser measurement system for cloud cover observation of the second embodiment is actually used: In step 5, when the cleaning tape 324 is closely attached to the inner wall of the carrier tube 310, the carrier end surface 221 and the external lens 222, the cleaning tape 324 is also closely attached to the piercing gas injection nozzle 330. At this time, the piercing gas injection nozzle 330 operates to pierce a layer of the cleaning tape 324 and inject gas into the cleaning tape 324, so that the cleaning tape 324 is more closely attached to the external lens 222 under the action of the internal pressure; thereafter, the inlet and outlet air hole group 223 is controlled to release gas so that the cleaning tape 324 is reset. In step 7 and step 8, the wiping force can be adjusted by piercing a layer of the cleaning tape 324 through the piercing gas injection nozzle 330 and injecting gas into the cleaning tape 324.

[0069] Embodiment 3: In order to further improve the cleaning effect and ensure the degree of cleanliness after cleaning, this embodiment 3 adds a side spray head and a pump assembly 360 on the basis of the above embodiment 2. The side spray head is positioned on the side wall of the supporting tube 310 and faces the external lens 222.

[0070] The liquid pump assembly 360 is a combination of a cleaning liquid tank, a liquid pump, a liquid valve and a liquid infusion tube. The cleaning liquid tank is used to store the cleaning liquid, and the liquid pump pumps the cleaning liquid in the cleaning liquid tank to the side nozzle.

[0071] After cleaning the dust, control the side nozzle to spray cleaning liquid to rinse and clean the external lens 222, control the support shell 220 to rotate to pour out the cleaning liquid in the support tube 310; while pouring out the cleaning liquid, control the pump air assembly 350 to operate so that the inlet and outlet holes both exhaust air to the outside and then discharge the cleaning liquid entering the inlet and outlet hole group 223; finally, scrub and clean.

[0072] Embodiment 4: Considering that the cleaning effect of flushing the external lens 222 by only relying on the side nozzle to spray cleaning liquid in the above embodiment 3 is relatively limited, and because the cleaning liquid will enter the inlet and outlet air hole group 223 and the air supply pipe connected thereto, it is easy to cause the inlet and outlet air holes and the air supply pipe to be dirty (dust and other dirt flushed easily flow into the tube body and remain on the tube wall, and after accumulation, it is easy to be carried out under the influence of the air flow in the tube, thereby dirtying the external lens 222 and affecting the measurement). To address the above problems, this embodiment 4 uses a piercing and injection nozzle 340 to replace the side nozzle in the above embodiment on the basis of the above embodiment 3, and optimizes and adjusts the structure of the inlet and outlet air hole group 223, and evenly arranges a plurality of heating piercing bodies 224 on the bearing end surface 221 near the edge of the external lens 222.

[0073] like Fig.16 and Fig.17 As shown, the puncturing and injection nozzle 340 is connected to the pump liquid component 360, and is used to puncture a layer of the cleaning tape 324 and inject cleaning liquid into the cleaning tape 324. There are one or more puncturing and injection nozzles, which are positioned on the inner wall of the supporting tube 310. The puncturing and injection nozzle 340 is a horizontally arranged cone or frustum, with a larger plane fixed on the inner wall of the supporting tube 310, and the liquid outlet is located on the outer wall; a heating melting head 331 is provided at a position of the puncturing and injection nozzle 340 away from the inner wall of the supporting tube 310; the heating melting head 331 is an electric heating wire or an electric heating plate, which is heated under the control of the control unit; the heating melting head 331 plays the role of timely melting and penetrating a layer of the cleaning tape 324.

[0074] Preferably, the structure of the puncturing liquid injection nozzle 340 is the same as that of the puncturing gas injection nozzle 330; the spacing between the inlet and outlet holes is less than 5 mm.

[0075] The number of the heating piercing bodies 224 is more than 3, and is preferably a section of electric heating wire, one end of which is fixed on the bearing end surface 221 and is heated under the control of the control unit to melt and penetrate a layer of the cleaning tape 324 in a timely manner.

[0076] The pump liquid assembly 360 also includes a waste liquid discharge assembly, which is a combination of a waste liquid tank, a distribution valve and a delivery tube, and is connected to the infusion tube to discharge the cleaning liquid that is drawn back after use.

[0077] When the laser measurement system for cloud cover observation of this embodiment 4 is actually used: After step 5 in embodiment 1 is completed and before step 6 is started, the inlet and outlet air hole group 223 is controlled to draw air from the supporting tube 310 so that the cleaning belt 324 is deformed under the action of negative pressure and gradually approaches the inner wall of the supporting tube 310, the supporting end surface 221 and the external lens 222, and the inlet and outlet air hole group 223 is completely closed; at this time, the cleaning belt 324 is also closely attached to the piercing and injection nozzle 340 and the heating piercing body 224; at this time, the piercing and injection nozzle 340 operates to pierce a layer of the cleaning belt 324 and inject cleaning liquid into the cleaning belt 324; the heating piercing body 224 also operates to pierce a layer of the cleaning belt 324; the liquid injected from the piercing and injection nozzle 340 Under the action of pressure, a portion of the cleaning liquid flows out from the position close to the heated piercing body 224; the flowing cleaning liquid will be on the bearing end face 221 and the external lens 222, and will not flow into the inlet and outlet holes because the inlet and outlet holes are closed; the piercing liquid injection nozzle 340 is controlled to intermittently output and withdraw the cleaning liquid, so that the cleaning liquid on the external lens 222 and the bearing end face 221 flows to assist the cleaning of the external lens 222; then the pump liquid assembly 360 is controlled to cooperate with the piercing liquid injection nozzle 340 to withdraw most of the output cleaning liquid into the waste liquid bin; then the inlet and outlet hole group 223 is controlled to release air so that the cleaning belt 324 is reset. When performing step 6, two cleaning cloths 326 are used successively to clean the outer lens 222. The first cleaning cloth 326 is used to dry the outer lens 222 and remove stubborn stains, and the second cleaning cloth 326 is used to clean the outer lens 222.

[0078] The present invention is not limited to the above embodiments, and any technical solutions formed by equivalent replacement shall fall within the protection scope required by the present invention.

Claims

1. A laser measurement system for cloud cover observation, comprising: A basic bearing shell and a scanning measurement unit arranged on the top of the basic bearing shell; The scanning and measuring unit has an external lens on one end surface; it is characterized in that it also includes a shielding self-cleaning component; The shielding self-cleaning assembly comprises: a carrying tube, a cleaning belt and an air pump; The carrying tube sleeve is arranged outside the external lens; the cleaning belt is located outside the carrying tube sleeve and can cover the end opening of the carrying tube, and the two ends are respectively carried by a winding roller and a releasing roller; the winding roller and the releasing roller are respectively arranged on both sides of the carrying tube; a plurality of through holes are arranged at intervals on the cleaning belt; the through holes are larger than the end opening of the carrying tube; a wiping cloth is fixed between the two through holes on the cleaning belt; The end surface of the scanning and measuring unit between the supporting tube and the external lens is provided with a plurality of air holes; the air holes are connected to the air pump, and the air holes can inhale or exhale air by controlling the air pump.

2. The laser measurement system for cloud cover observation according to claim 1, characterized in that: The cleaning belt has a self-adhesive sticker on the surface facing the external lens; the cleaning belt is made of elastic material.

3. The laser measurement system for cloud cover observation according to claim 2, characterized in that: The air holes are all connected with distribution valves, and the air volume of the air holes can be adjusted independently.

4. The laser measurement system for cloud cover observation according to claim 3, characterized in that: The end surface of the supporting tube is provided with a plurality of adsorption grooves; the adsorption grooves are connected to the air pump.

5. The laser measurement system for cloud cover observation according to claim 4, characterized in that: The cleaning belt is a double-layer structure, and is formed into a flat tube shape by fixing two layers of belt bodies at the edges.

6. The laser measurement system for cloud cover observation according to claim 5, characterized in that: The inner side wall of the supporting tube is provided with a plurality of puncturing and gas injection nozzles; the puncturing and gas injection nozzles are connected to the air pump; the puncturing and gas injection nozzles can extend into the cleaning belt and inject gas.

7. The laser measurement system for cloud cover observation according to claim 6, characterized in that: The inner side wall of the supporting tube is provided with a plurality of side spray heads, which are connected to a liquid pump assembly and can spray liquid onto the external lens.

8. The laser measurement system for cloud cover observation according to claim 6, characterized in that: The inner side wall of the supporting tube is provided with a plurality of puncturing and liquid injection nozzles; the puncturing and liquid injection nozzles are connected to the liquid pump assembly; the puncturing and liquid injection nozzles can extend into the cleaning belt and inject liquid.

9. The laser measurement system for cloud cover observation according to claim 8, characterized in that: The puncturing and injecting air nozzle and the puncturing and injecting liquid nozzle both have a heating and melting head for destroying a layer on the inner side of the cleaning belt.

10. A working method of a laser measurement system for cloud cover observation according to any one of claims 1 to 9, characterized in that: Include the following steps: Step 1: A through hole on the cleaning belt is coaxial with the external lens, and the laser measurement system works normally; Step 2: When cleaning, the reel-up roller and the release roller rotate, and the cleaning belt runs accordingly, so that the cleaning belt between the two through holes covers the end of the supporting tube; Step 3: Control the air pump to draw air from the carrier tube through the air holes so that the cleaning belt gradually clings to the inner wall of the carrier tube and the external lens; then release air through the air holes so that the cleaning belt is reset; and dust cleaning is performed in this way; Step 4: The reeling roller and the release roller rotate and operate again, so that the wiping cloth moves to the end of the supporting tube; Step 5: Air is sucked from the carrier tube through the air hole so that the cleaning belt is deformed under the negative pressure, thereby making the wiping cloth closely attached to the external lens; Step 6: Adjust the air holes several times to allow air to enter and exhaust, so as to achieve the wiping action of the wiping cloth on the external lens; Step 7: Then, the cleaning belt is reset by releasing air through the air holes; Step 8: The reel-up roller and the release roller are rotated so that the next through hole of the cleaning belt is coaxial with the external lens.

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