Coefficient of variation measurement device

Abstract

The present invention relates to the field of drone testing, and in particular, to a coefficient of variation measuring device; the coefficient of variation measuring device comprises a positioning mechanism, a measuring mechanism and a driving mechanism, wherein the positioning mechanism is used to movably set a drone so that the drone can swing relative to the positioning mechanism; the measuring mechanism comprises a support and a plurality of measuring cylinders arranged on the support, and the plurality of measuring cylinders are used to receive liquid sprayed by the drone arranged by the positioning mechanism; the driving mechanism is transmission-connected to the support, and is used to drive the measuring mechanism to move along a set path. The coefficient of variation measuring device of the present invention can reduce the space occupied by the coefficient of variation measurement and reduce costs.

Description

Technical Field

[0001] The invention relates to the field of unmanned aerial vehicle testing, and in particular to a coefficient of variation measuring device. Background Art

[0002] Plant protection drones need to be tested before leaving the factory, and the coefficient of variation is an important reference indicator for the performance of plant protection drones. The coefficient of variation test refers to testing the uniformity of the spraying of pesticides by plant protection drones. The traditional measurement method is to evenly place multiple measuring cylinders in a large area, and the plant protection drones fly over the measuring cylinders while spraying the pesticides, simulating the spraying operation scene. After flying the scheduled route, it is necessary to conduct statistical analysis on the amount of pesticide in each measuring cylinder to determine whether the spraying operation of the plant protection drone is uniform.

[0003] However, this method provided by the related technology requires a large area of ​​measurement site and is relatively costly. Summary of the invention

[0004] The object of the present invention is to provide a coefficient of variation measurement device, which can reduce the space occupied by the coefficient of variation measurement and reduce the cost.

[0005] The embodiment of the present invention is achieved as follows:

[0006] In a first aspect, the present invention provides a device for measuring coefficient of variation, comprising:

[0007] A positioning mechanism, the positioning mechanism is used to movably set the UAV so that the UAV can swing relative to the positioning mechanism;

[0008] A measuring mechanism, the measuring mechanism comprising a support and a plurality of measuring cylinders arranged on the support, the plurality of measuring cylinders being used to receive the liquid sprayed by the drone arranged by the positioning mechanism;

[0009] The driving mechanism is in driving connection with the supporting member and is used for driving the measuring mechanism to move along a set path.

[0010] In an optional embodiment, the positioning mechanism includes a fixed connection member and a movable connection member; the movable connection member is used to connect the drone to the fixed connection member so that the drone can swing relative to the fixed connection member.

[0011] In an optional embodiment, the movable connection member includes a spherical universal joint, and the spherical universal joint is used to connect the drone to the fixed connection member.

[0012] In an optional embodiment, the coefficient of variation measuring device further comprises a sealing mechanism disposed on the measuring mechanism, and the sealing mechanism is used to close or open the water inlet hole of the measuring cylinder.

[0013] In an optional embodiment, the sealing plate mechanism includes a sealing plate and a first driving assembly, the first driving assembly is arranged on the measuring mechanism, and the first driving assembly is transmission-connected to the sealing plate for driving the sealing plate to open or close the water inlet holes of multiple measuring cylinders.

[0014] In an optional embodiment, the sealing plate is provided with a plurality of water holes, and the first driving assembly can drive the plurality of water holes of the sealing plate to communicate with the water inlet holes of the plurality of measuring cylinders in a one-to-one correspondence.

[0015] In an optional embodiment, the coefficient of variation measuring device further includes a baffle mechanism disposed on the measuring mechanism, the measuring cylinder is provided with a drainage hole, and the baffle mechanism is used to close or open the drainage hole.

[0016] In an optional embodiment, the baffle mechanism includes a baffle and a second drive assembly, the second drive assembly is arranged on the measuring mechanism, the second drive assembly is transmission-connected to the baffle, and is used to drive the baffle to close or open the drainage holes of multiple measuring cylinders.

[0017] In an optional embodiment, the driving mechanism includes a third driving component and a fourth driving component, the third driving component and the fourth driving component are transmission connected, the fourth driving component is transmission connected to the measuring mechanism, the third driving component is used to drive the fourth driving component and the measuring mechanism to move together in a first direction, and the fourth driving component is used to drive the measuring mechanism to move in a second direction; wherein the first direction and the second direction are set at an angle.

[0018] In an optional embodiment, the measuring mechanism further includes a water level gauge disposed in the measuring cylinder.

[0019] The beneficial effects of the coefficient of variation measuring device of the embodiment of the present invention include: the coefficient of variation measuring device provided by the embodiment of the present invention includes a positioning mechanism, a measuring mechanism and a driving mechanism, wherein the positioning mechanism is used to movably set the drone so that the drone can swing relative to the positioning mechanism; the measuring mechanism includes a support and a plurality of measuring cylinders arranged on the support, and the plurality of measuring cylinders are all used to receive liquid sprayed by the drone set by the positioning mechanism; the driving mechanism is transmission-connected to the support, and is used to drive the measuring mechanism to move along a set path. In this way, when using a coefficient of variation measuring device to measure the coefficient of variation of a drone, the drone can be set up with a positioning mechanism to fix the relative position of the drone, and then the driving mechanism can be used to drive the measuring mechanism to move along a set path. The driving mechanism can be used to drive the measuring mechanism to reversely simulate the flight route of the drone, without the need to make the drone fly along a preset route to test the coefficient of variation. Since the relative position of the drone is fixed, the site area required for the test can be reduced, that is, the site occupied by the coefficient of variation measurement can be reduced; moreover, the driving mechanism is used to drive the measuring mechanism to move along the set path to reversely simulate the flight route of the drone, and there is no need to set up a large number of measuring cylinders at the test site to cover the flight route of the drone. The measuring mechanism can be driven to move by the driving mechanism so that multiple measuring cylinders traverse the flight route of the drone, thereby reducing the number of measuring cylinders, which is beneficial to reducing measurement costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 The structure of the variation coefficient measuring device in the embodiment of the present invention is shown in FIG. Figure 1 ;

[0022] Figure 2 It is a schematic diagram of the structure of the movable connecting member and the fixed bracket in an embodiment of the present invention;

[0023] Figure 3 The structure of the variation coefficient measuring device in the embodiment of the present invention is shown in FIG. Figure 2 .

[0024] Icons: 010-coefficient of variation measuring device; 100-positioning mechanism; 110-fixed connecting piece; 120-movable connecting piece; 121-movable ball; 200-measuring mechanism; 210-measuring cylinder; 211-water inlet; 220-support; 230-sealing plate mechanism; 231-sealing plate; 232-first driving assembly; 233-water hole; 240-baffle mechanism; 241-baffle; 242-second driving assembly; 300-driving mechanism; 310-third driving assembly; 320-fourth driving assembly; 400-UAV; 410-fixed bracket; 411-first rod; 412-second rod; 413-third rod; 420-connecting assembly; 421-ring; 422-first half ring; 423-second half ring; 424-first lug; 425-second lug; 426-fastener. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0028] In the description of the present invention, it should be noted that the terms "left", "right", "up", "down", "horizontal", "front", "back", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or the directions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0029] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] Figure 1 The structure of the variation coefficient measuring device 010 in the embodiment of the present invention is shown in FIG. Figure 1 ; Please refer to Figure 1 , this embodiment provides a coefficient of variation measuring device 010, which is used to measure the coefficient of variation of the drone 400, that is, to measure the uniformity of the liquid sprayed by the drone 400.

[0031] Please refer to Figure 1 The coefficient of variation measuring device 010 includes a positioning mechanism 100, a measuring mechanism 200 and a driving mechanism 300; wherein the positioning mechanism 100 is used to movably set the drone 400 so that the drone 400 can swing relative to the positioning mechanism 100; the measuring mechanism 200 includes a support 220 and a plurality of measuring cylinders 210 arranged on the support 220, and the plurality of measuring cylinders 210 are all used to receive the liquid sprayed by the drone 400 set by the positioning mechanism 100; the driving mechanism 300 is transmission-connected to the support 220, and is used to drive the measuring mechanism 200 to move along a set path.

[0032] When using the coefficient of variation measuring device 010 to test the coefficient of variation of the drone 400, the drone 400 can be set up with the positioning mechanism 100 to fix the relative position of the drone 400, and then the driving mechanism 300 can be used to drive the measuring mechanism 200 to move along the set path. The driving mechanism 300 can be used to drive the measuring mechanism 200 to reversely simulate the flight route of the drone 400, without the need to make the drone 400 fly along the preset route to test the coefficient of variation. Since the relative position of the drone 400 is fixed, the site area required for the test can be reduced, that is, the site occupied by the coefficient of variation measurement can be reduced; moreover, the driving mechanism 300 is used to drive the measuring mechanism 200 to move along the set path to reversely simulate the flight route of the drone 400. There is no need to set up a large number of measuring cylinders 210 at the test site to cover the flight route of the drone 400. The measuring mechanism 200 can be driven by the driving mechanism 300 to move so that multiple measuring cylinders 210 traverse the flight route of the drone 400, so as to reduce the number of measuring cylinders 210, which is conducive to reducing the measurement cost.

[0033] In this embodiment, please continue to refer to Figure 1The positioning mechanism 100 includes a fixed connection member 110 and a movable connection member 120. The movable connection member 120 is used to connect the drone 400 to the fixed connection member 110 so that the drone 400 can swing relative to the fixed member. In this way, the relative position of the drone 400 can be fixed by the movable connection member 120 and the fixed connection member 110, and the drone 400 can swing relative to the fixed connection member 110, so that when the coefficient of variation test is performed, the drone 400 can flexibly simulate the flight posture to further ensure the accuracy of the coefficient of variation test.

[0034] It should be noted that, in order to ensure that the relative position of the drone 400 is fixed when the coefficient of variation is tested, thereby ensuring the accuracy of the test, the positioning mechanism 100 may also include a frame, a fixed connector 110 is fixedly arranged on the frame, and a movable connector 120 is connected to the fixed connector 110. The drone 400 can be assembled on the movable connector 120 and can swing relative to the fixed connector 110. The above-mentioned frame can be a gantry frame, etc., which is not specifically limited here. Of course, in other embodiments, the positioning mechanism 100 may include a frame and a movable connector 120, and the movable connector 120 is connected to the frame, that is, the frame can serve as the fixed connector 110.

[0035] Optionally, the fixed connecting member 110 can be a connecting block or a connecting rod, etc.; of course, the fixed connecting member 110 can also be a driving member such as an electric push rod or a cylinder, so that the driving member can drive the movable connecting member 120 connected to it to drive the drone 400 to move in the up and down directions, thereby adjusting the distance between the drone 400 and the measuring mechanism 200; specifically, the driving member can be used to adjust the distance between the drone 400 and the measuring cylinder 210, so as to obtain more accurate and effective test results.

[0036] The movable connecting member 120 can be selected as needed. The movable connecting member 120 of this embodiment includes a spherical universal joint, which is fixedly connected to the fixed connecting member 110. The drone 400 is movably connected to the spherical universal joint so that the drone 400 can swing relative to the fixed connecting member 110 using the spherical universal joint. That is, when the coefficient of variation of the drone 400 is tested by the coefficient of variation measuring device 010, the drone 400 is connected to the movable connecting member 120 fixedly arranged on the fixed connecting member 110 so that the relative positions of the drone 400 and the fixed connecting member 110 are fixed, and the drone 400 can swing using the movable connecting member 120 to simulate various flight postures. Of course, in other embodiments, the spherical universal joint is movably connected to the fixed connecting member 110, and the drone 400 is fixedly connected to the spherical universal joint so that the drone 400 can swing relative to the fixed connecting member 110 synchronously with the spherical universal joint.

[0037] Figure 2Schematic diagram of the structure of the movable connecting member 120 and the fixed bracket 410 in the embodiment of the present invention.

[0038] In order to make it easier for the drone 400 to connect to the movable connector 120, please refer to Figure 2 The positioning mechanism 100 of this embodiment also includes a fixed bracket 410 and a connecting assembly 420. The fixed bracket 410 is connected to the movable connecting member 120. Specifically, the fixed bracket 410 is fixedly connected to the movable ball 121 of the spherical universal joint, and the arm of the drone is connected to the fixed bracket 410 through the connecting assembly 420.

[0039] Further, the connecting assembly 420 includes a collar 421 and a fastener 426, the collar 421 includes a first half ring 422 and a second half ring 423 that are mutually buckled, both ends of the first half ring 422 are provided with a first lug 424, both ends of the second half ring 423 are provided with a second lug 425, both the first lug 424 and the second lug 425 are provided with threaded holes, the first half ring 422 is fixedly connected to the fixing bracket 410, the first half ring 422 and the second half ring 423 are buckled and the machine arm is clamped therebetween, and a group of opposite first lugs 424 and second lugs 425 are connected by a fastener 426, that is, the fastener 426 is simultaneously threadedly matched with the threaded holes of the group of opposite first lugs 424 and second lugs 425. The above-mentioned fastener 426 includes bolts or screws, etc. Such a configuration facilitates the disassembly and assembly of the drone 400 to the movable connecting member 120.

[0040] In order to improve the reliability and stability of the first half ring 422 and the second half ring 423 clamping the machine arm, when the machine arm is clamped between the first half ring 422 and the second half ring 423 , the outer wall of the machine arm fits with the inner walls of the first half ring 422 and the second half ring 423 .

[0041] It should be noted that the number of connection components 420 can be set as needed, for example, two, four or six, etc., and is not specifically limited here.

[0042] It should be noted that the structure of the fixed bracket 410 can be set as needed. The fixed bracket 410 of this embodiment includes a first rod 411 fixedly connected to the movable ball 121 of the spherical universal joint, a second rod 412 connected to the first rod 411, and a third rod 413 connected to the second rod 412. The first half ring 422 is fixedly connected to the third rod 413. Of course, in other embodiments, the second rod 412 can also be replaced by a connecting plate, which is not specifically limited here. Further, the number of the third rods 413 can be selected as needed, for example, it can be two, four or six, etc., which is not specifically limited here.

[0043] The connection between the first rod 411 and the movable ball 121, the connection between the first rod 411, the second rod 412 and the third rod 413, and the connection between the first half ring 422 and the third rod 413 can all be welding, integral molding, etc., which are not specifically limited here.

[0044] Figure 3 The structure of the variation coefficient measuring device 010 in the embodiment of the present invention is shown in FIG. Figure 2 Please refer to Figure 3 The coefficient of variation measuring device 010 of this embodiment further includes a sealing mechanism 230, which is disposed on the measuring mechanism 200 and is used to seal or open the water inlet 211 at the top of the measuring cylinder 210. With such a configuration, when testing the coefficient of variation, the water inlet 211 of the measuring cylinder 210 can be sealed with the sealing mechanism 230 first, and when the drone 400 sprays the liquid steadily, the water inlet 211 of the measuring cylinder 210 can be opened with the sealing mechanism 230 to obtain a more accurate measurement result.

[0045] The structure of the sealing plate mechanism 230 can be selected as needed. The sealing plate mechanism 230 of this embodiment includes a sealing plate 231 and a first driving assembly 232. The first driving assembly 232 is arranged on the measuring mechanism 200, and the first driving assembly 232 is connected to the sealing plate 231 in a transmission manner, and is used to drive the sealing plate 231 to open or close the water inlet holes 211 of multiple measuring cylinders 210. In this way, one sealing plate 231 can be used to open or close the water inlet holes 211 of multiple measuring cylinders 210 at the same time, so as to further determine the reliability and accuracy of the measurement results.

[0046] In other embodiments, the coefficient of variation measuring device 010 may include a plurality of sealing mechanisms 230 disposed on the measuring mechanism 200, the plurality of sealing mechanisms 230 and the plurality of measuring cylinders 210 are disposed in one-to-one correspondence, and each sealing mechanism 230 is used to correspondingly close or open the water inlet hole 211 of a measuring cylinder 210; each sealing mechanism 230 includes a sealing plate 231 and a first driving assembly 232 transmission-connected thereto.

[0047] For further information, please refer to Figure 3, the sealing plate 231 is provided with a plurality of water holes 233, and the first driving component 232 can drive the plurality of water holes 233 of the sealing plate 231 to communicate with the water inlet holes 211 of the plurality of measuring cylinders 210 in a one-to-one correspondence. When the first driving component 232 drives the plurality of water holes 233 of the sealing plate 231 to communicate with the water inlet holes 211 of the plurality of measuring cylinders 210 in a one-to-one correspondence, the water inlet holes 211 of the plurality of measuring cylinders 210 are all opened; when the first driving component 232 drives the plurality of water holes 233 of the sealing plate 231 to be completely staggered with the corresponding water inlet holes 211 of the plurality of measuring cylinders 210, the sealing plate 231 can close the water inlet holes 211 of the plurality of measuring cylinders 210. With such a configuration, the first driving component 232 can be used to drive one sealing plate 231 to reliably close or open the water inlet holes 211 of the plurality of measuring cylinders 210 at the same time, thereby ensuring the reliability and accuracy of the measurement results.

[0048] In this embodiment, the first driving assembly 232 is used to drive the sealing plate 231 to slide in the horizontal direction, so as to open or close the water inlet hole 211 of the measuring cylinder 210. In other embodiments, the moving direction of the sealing plate 231 can also be substantially horizontal, that is, the moving direction of the sealing plate 231 can also be at an angle of 1°, 2°, etc. to the horizontal direction.

[0049] Of course, in other embodiments, the first driving assembly 232 may also drive the sealing plate 231 to flip so as to open or close the water inlet hole 211 of the measuring cylinder 210 , which is not specifically limited here.

[0050] The first drive assembly 232 can be selected as needed, for example: the first drive assembly 232 can be an electric push rod, a conveyor belt assembly or a gear rack assembly, etc., which is not specifically limited here. Here, the first drive assembly 232 is taken as an example of a gear rack assembly. The gear rack assembly includes a motor, a gear and a rack. The rack is fixedly arranged on the support member 220 and extends in the horizontal direction. The gear is rotatably arranged on the sealing plate 231. The output shaft of the motor is connected to the gear transmission. The gear is meshed with the rack. When the output shaft of the motor rotates, the gear is driven to rotate, and the gear can move along the length extension direction of the rack to drive the sealing plate 231 to move in the horizontal direction, thereby opening or closing the water inlet 211 of the measuring cylinder 210; of course, in other embodiments, the rack is fixedly arranged on the sealing plate 231, and the gear is rotatably arranged on the support member 220 and is connected to the output shaft of the motor.

[0051] Please refer to Figure 3The coefficient of variation measuring device 010 of this embodiment further includes a baffle mechanism 240, which is arranged on the measuring mechanism 200. A drainage hole (not shown) is arranged at the bottom of the measuring cylinder 210, and the baffle mechanism 240 is used to close or open the drainage hole. With such arrangement, during the measurement process, if the liquid in the measuring cylinder 210 needs to be discharged, the baffle mechanism 240 can be used to open the drainage hole of the measuring cylinder 210 to discharge the water in the measuring cylinder 210; when the measuring cylinder 210 needs to receive the liquid sprayed by the drone 400, the baffle mechanism 240 can be used to close the drainage hole of the measuring cylinder 210.

[0052] Further, the baffle mechanism 240 includes a baffle 241 and a second drive assembly 242, the second drive assembly 242 is disposed on the measuring mechanism 200, and the second drive assembly 242 is in driving connection with the baffle 241, and is used to drive the baffle 241 to close or open the drainage holes of the plurality of measuring cylinders 210. In this way, the drainage holes of the plurality of measuring cylinders 210 can be closed or opened at the same time by using a set of baffle mechanisms 240, which can reduce the cost, and can also reliably discharge the liquid in the plurality of measuring cylinders 210, so as to facilitate subsequent reliable detection.

[0053] Of course, in other embodiments, the coefficient of variation measuring device 010 may include a plurality of baffle mechanisms 240 , and the plurality of baffle mechanisms 240 are arranged in a one-to-one correspondence with the plurality of measuring cylinders 210 .

[0054] In this embodiment, the baffle 241 is configured to move in the up-down direction. When the drainage hole of the measuring cylinder 210 needs to be opened, the second driving assembly 242 drives the baffle 241 to move downward to open the drainage hole. Of course, in other embodiments, the baffle 241 can also be configured to move or rotate in the horizontal direction, which is not specifically limited here.

[0055] It should be noted that the second driving assembly 242 can be a conveyor belt assembly, an electric push rod or a gear rack assembly, etc., which is not specifically limited here. Taking the gear rack assembly as an example, the gear rack assembly includes a motor, a gear and a rack, the rack is fixedly arranged on the support member 220, the rack extends in the up-down direction, the gear is rotatably arranged on the baffle 241, the output shaft of the motor is connected to the gear transmission, the gear is meshed with the rack, and when the output shaft of the motor rotates, the gear transmission is driven to move the gear along the length extension direction of the rack, so as to drive the baffle 241 to move in the up-down direction to open or close the drainage hole of the measuring cylinder 210.

[0056] It should be further explained that, in other embodiments, the sealing plate 231 assembly may not be provided with the first driving assembly 232, and the user manually drives the sealing plate 231 to close or open the water inlet hole 211 of the measuring cylinder 210. In other embodiments, the baffle mechanism 240 may not be provided with the second driving assembly 242, and the user manually drives the baffle 241 to close or open the drainage hole of the measuring cylinder 210.

[0057] In this embodiment, the support member 220 is a support plate, and the support plate is provided with a plurality of mounting holes, and the plurality of measuring cylinders 210 are plugged into the plurality of mounting holes in a one-to-one correspondence, so that the plurality of measuring cylinders 210 are reliably arranged on the support plate. In other embodiments, the number of mounting holes may be greater than the number of measuring cylinders 210, that is, redundant mounting holes may be reserved on the support plate.

[0058] Further, the mounting hole is a through hole, and both ends of the measuring cylinder 210 extend from the mounting hole, so that the sealing plate 231 and the baffle 241 can reliably cooperate with the measuring cylinder 210 to open or close the water inlet hole 211 and the drainage hole. Of course, in other embodiments, the two ends of the measuring cylinder 210 can also be flush with the surface of the support plate.

[0059] In order to improve the reliability of the measuring cylinder 210 being arranged on the support plate, the outer wall of the measuring cylinder 210 is fitted with the inner wall of the mounting hole so that the measuring cylinder 210 can be reliably inserted into the mounting hole. Of course, in other embodiments, the measuring cylinder 210 can also be bonded or clamped to the mounting hole, etc., which is not specifically limited here.

[0060] The multiple measuring cylinders 210 of this embodiment are evenly distributed on the support plate in a rectangular array. Of course, in other embodiments, the multiple measuring cylinders 210 can also be evenly distributed on the support plate in an annular array; in other embodiments, the multiple measuring cylinders 210 can also be unevenly distributed; this is not specifically limited here.

[0061] Please refer to Figure 3 The driving mechanism 300 of this embodiment includes a third driving assembly 310 and a fourth driving assembly 320, the third driving assembly 310 and the fourth driving assembly 320 are in transmission connection, the fourth driving assembly 320 is in transmission connection with the measuring mechanism 200, the third driving assembly 310 is used to drive the fourth driving assembly 320 and the measuring mechanism 200 to move along the first direction together, and the fourth driving assembly 320 is used to drive the measuring mechanism 200 to move along the second direction, wherein the first direction and the second direction are set at an angle. Such a setting facilitates the use of the driving mechanism 300 to drive the measuring mechanism 200 to simulate the flight route of the drone 400.

[0062] It should be noted that the driving mechanism 300 is arranged below the positioning mechanism 100, so that the driving mechanism 300 drives the measuring mechanism 200 to receive the liquid sprayed by the drone 400 mounted on the positioning mechanism 100. The flight route of the drone 400 can be roughly in the shape of a "bow", and the driving mechanism 300 is used to drive the measuring mechanism 200 to move roughly along the "bow"-shaped path, that is, the above-mentioned set path can be a "bow"-shaped path. In this embodiment, after the third driving component 310 drives the fourth driving component 320 and the measuring mechanism 200 to move a first distance in the first direction, the fourth driving component 320 drives the measuring mechanism 200 to move a second distance in the second direction, and then the third driving component 310 drives the fourth driving component 320 and the measuring mechanism 200 to move a first distance in the first direction, and then the fourth driving component 320 drives the measuring mechanism 200 to move a second distance in the second direction, and this cycle is repeated, so that the measuring mechanism 200 can move roughly in the "bow"-shaped path.

[0063] It should be further explained that the first direction and the second direction of this embodiment are arranged perpendicularly, for example, the first direction is the front-to-back direction, and the second direction is the left-to-right direction. In other embodiments, the angle between the first direction and the second direction can be 88°, 92°, etc., which is not specifically limited here.

[0064] Of course, in other embodiments, the driving mechanism 300 can also drive the measuring mechanism 200 to move approximately along an “S”-shaped path, or along a “Z”-shaped path, which is not specifically limited here.

[0065] The structures of the third drive assembly 310 and the fourth drive assembly 320 can be selected as needed. In this embodiment, the third drive assembly 310 includes a first slide and a first conveyor belt assembly, and the fourth drive assembly 320 includes a second slide and a second conveyor belt assembly. The first conveyor belt assembly is arranged on the first slide, and the first conveyor belt assembly is transmission-connected to the second slide and is used to drive the second slide to move in the first direction. The second conveyor belt assembly is arranged on the second slide and is transmission-connected to the support member 220, and is used to drive the support member 220 to move in the second direction. With such an arrangement, the first conveyor belt assembly can be used to drive the second slide and the second conveyor belt assembly arranged on the second slide and the support member 220 transmission-connected to the second conveyor belt assembly to move synchronously in the first direction, and the second conveyor belt assembly can be used to drive the support member 220 to move in the second direction, thereby ensuring that the driving mechanism 300 can reliably drive the measuring mechanism 200 to move along the set path.

[0066] It should be noted that in other embodiments, a conveyor chain assembly, a screw assembly, an electric push rod or a cylinder and other devices may be used to replace the first conveyor belt assembly or the second conveyor belt assembly, which is not specifically limited here.

[0067] The measuring mechanism 200 of this embodiment further includes a water level meter, such as a water level sensor or a liquid level meter, disposed in the measuring cylinder 210. This arrangement allows the water level meter to timely and accurately count the amount of liquid received by each measuring cylinder 210, thereby improving detection efficiency and accuracy.

[0068] Of course, in other embodiments, the water level gauge is not provided in the measuring cylinder 210, and the scale of the measuring cylinder 210 can be read during measurement.

[0069] When testing the coefficient of variation of the drone 400, the coefficient of variation measuring device 010 of this embodiment can assemble the drone 400 on the positioning mechanism 100, turn on the drone 400 and start spraying liquid; when the drone 400 sprays the liquid steadily, the driving mechanism 300 drives the measuring mechanism 200 to move along the set path, and the sealing plate 231 assembly opens the water inlet 211 of the measuring cylinder 210, and the baffle mechanism 240 closes the drainage hole of the measuring cylinder 210; the liquid sprayed by the drone 400 is received by the measuring cylinder 210, so as to detect the uniformity of the liquid sprayed by the drone 400.

[0070] In summary, the coefficient of variation measuring device 010 provided by the present invention can utilize the driving mechanism 300 to drive the measuring mechanism 200 to reversely simulate the flight route of the drone 400, without the need to make the drone 400 fly according to a preset route to test the coefficient of variation. Since the relative position of the drone 400 is fixed, the site area required for the test can be reduced, that is, the site occupied by the coefficient of variation measurement can be reduced; moreover, the driving mechanism 300 is utilized to drive the measuring mechanism 200 to move according to the set path to reversely simulate the flight route of the drone 400. There is no need to set up a large number of measuring cylinders 210 at the test site to cover the flight route of the drone 400. The measuring mechanism 200 can be driven to move by the driving mechanism 300 so that multiple measuring cylinders 210 traverse the flight route of the drone 400, so as to reduce the number of measuring cylinders 210, which is beneficial to reducing the measurement cost.

[0071] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A coefficient of variation measuring device, characterized in that: include: A positioning mechanism, the positioning mechanism is used to movably arrange the drone so that the drone can swing relative to the positioning mechanism; A measuring mechanism, the measuring mechanism comprising a support and a plurality of measuring cylinders arranged on the support, the plurality of measuring cylinders being used to receive the liquid sprayed by the drone arranged by the positioning mechanism; A driving mechanism, the driving mechanism is in driving connection with the supporting member and is used to drive the measuring mechanism to move along a set path; wherein, The driving mechanism includes a third driving component and a fourth driving component, the third driving component and the fourth driving component are transmission-connected, the fourth driving component is transmission-connected to the measuring mechanism, the third driving component is used to drive the fourth driving component and the measuring mechanism to move together in a first direction, and the fourth driving component is used to drive the measuring mechanism to move in a second direction; wherein, the first direction and the second direction are set at an angle.

2. The coefficient of variation measuring device according to claim 1, characterized in that: The positioning mechanism includes a fixed connecting member and a movable connecting member; the movable connecting member is used to connect the drone to the fixed connecting member so that the drone can swing relative to the fixed connecting member.

3. The coefficient of variation measuring device according to claim 2, characterized in that: The movable connection member includes a spherical universal joint, and the spherical universal joint is used to connect the drone with the fixed connection member.

4. The coefficient of variation measuring device according to claim 1, characterized in that: The coefficient of variation measuring device further comprises a sealing plate mechanism disposed on the measuring mechanism, and the sealing plate mechanism is used to close or open the water inlet hole of the measuring cylinder.

5. The coefficient of variation measuring device according to claim 4, characterized in that: The sealing plate mechanism includes a sealing plate and a first driving assembly, wherein the first driving assembly is disposed on the measuring mechanism and is drivingly connected to the sealing plate for driving the sealing plate to open or close the water inlet holes of the plurality of measuring cylinders.

6. The coefficient of variation measuring device according to claim 5, characterized in that: The sealing plate is provided with a plurality of water holes, and the first driving assembly can drive the plurality of water holes of the sealing plate to communicate with the water inlet holes of the plurality of measuring cylinders in a one-to-one correspondence.

7. The coefficient of variation measuring device according to claim 1, characterized in that: The coefficient of variation measuring device further comprises a baffle mechanism arranged on the measuring mechanism, the measuring cylinder is provided with a drainage hole, and the baffle mechanism is used to close or open the drainage hole.

8. The coefficient of variation measuring device according to claim 7, characterized in that: The baffle mechanism includes a baffle and a second driving assembly, wherein the second driving assembly is disposed on the measuring mechanism and is drivingly connected to the baffle for driving the baffle to close or open the drainage holes of the plurality of measuring cylinders.

9. The coefficient of variation measuring device according to claim 1, characterized in that: The measuring mechanism also includes a water level gauge arranged in the measuring cylinder.

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