A test platform for an unmanned aerial vehicle (UAV) spreading system

Abstract

The present invention discloses a test platform for an unmanned aerial vehicle (UAV) spreading system, which includes a test platform for the UAV spreading system. The test platform for the UAV spreading system comprises a test platform, a spreading device, a control device, a data acquisition device, a material collection device and a feeding device. The spreading device, the control device and the data acquisition device are mounted on the test platform. The control device consists of a remote controller, a receiver and a power supply device. The remote controller and the receiver are connected to the spreading device through a circuit, and the power supply device is connected to the test platform for the UAV spreading system through a circuit. The material collection device is installed directly below the spreading device, and one side of the material collection device is connected to the feeding device. The feeding device consists of a material guiding pipe, a driving motor and a screw rod. By conducting tests on the spreader, the present invention can not only improve the test work efficiency, but also save test materials to a certain extent. Moreover, the fully enclosed fuselage can prevent harmful particles from spreading outwards and prevent environmental pollution.

Description

Technical Field

[0001] The present invention relates to the technical field of unmanned aerial vehicle (UAV) sowing test platforms, and particularly to a test platform for a UAV sowing system. Background Art

[0002] An agricultural UAV is an unmanned aircraft used for agricultural and forestry plant protection operations, which consists of a flight platform (fixed wing, single rotor, multi-rotor), a GPS flight control, and a spraying mechanism. It can spray pesticides, seeds, powders, etc. through ground remote control or GPS flight control. In rural areas, manual backpack sprayers are mainly used to undertake the task of preventing and controlling pests and diseases. In recent years, various manufacturers in the agricultural UAV industry have launched various sowing devices for field seeding and fertilization operations. During the R & D process of sowing devices, a large number of simulations and performance tests are required. At present, most UAV manufacturers test the sowing devices by actual flight tests, and there are very few professional sowing device test platforms.

[0003] However, the existing agricultural UAV test methods have the following problems: (1) At present, the test platform for the UAV sowing system is still blank in the industry. Most UAV manufacturers use the actual flight test method for relevant tests, and there is no professional sowing system test platform product or manufacturer on the market; (2) The existing UAV test methods have a low degree of automation and usually require manual collaborative operations, resulting in a large labor intensity. Therefore, corresponding technical solutions are needed to solve the existing technical problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a test platform for a UAV sowing system. During the R & D and design process of the UAV sowing device, there is a large demand for simulation tests. This test platform can simulate the sowing device in the working condition environment to test various performance parameters, stability, durability and other items, realize the repeated recycling and automatic circulation use of the sown materials, reduce the labor intensity of the staff for repeated feeding, improve work efficiency, reduce the implementation difficulty, reduce the implementation cost, expand the implementable range, and achieve standardized operation.

[0005] To achieve the above object, the present invention provides the following technical solution: a test platform for an unmanned aerial vehicle (UAV) spreading system, including a test platform for the UAV spreading system. The test platform for the UAV spreading system includes a test platform, a spreading device, a control device, a data acquisition device, a material collection device, and a feeding device. The spreading device, the control device, and the data acquisition device are mounted on the test platform. The control device is composed of a remote controller, a receiver, and a power supply device. The remote controller and the receiver are connected to the spreading device through a line. The power supply device is connected to the test platform for the UAV spreading system through a line. The material collection device is installed directly below the spreading device. One side of the material collection device is connected to the feeding device. The feeding device is composed of a feeding pipe, a driving motor, and a screw rod. The lower end of the feeding pipe is connected to the material collection device and forms an arc-shaped discharging pipe at the lower end. The driving motor is installed at the upper end of the feeding pipe, and the power output end is connected to the screw rod. The screw rod is placed inside the feeding pipe.

[0006] As a preferred embodiment of the present invention, the test platform is a 1 m × 1 m × 1.1 m high frame platform carried by universal angle iron and KT board. Two groups of cross beams are symmetrically installed on the surface of the test platform. The spreading device is installed between the two groups of cross beams.

[0007] As a preferred embodiment of the present invention, the spreading device includes a spreader and an additional material box. The additional material box is installed on the spreader. The spreader is of the EFT EPS200 model.

[0008] As a preferred embodiment of the present invention, the data acquisition device includes a voltage acquisition line, an electric current acquisition line, a motor connection line, and a control board.

[0009] As a preferred embodiment of the present invention, the material collection device has a sealed box structure, and the spreader is placed inside the material collection device.

[0010] As a preferred embodiment of the present invention, the feeding device uses a stainless steel vertical elevator. The discharge port is 1.3 m above the ground. The length of the discharge port pipe is 78 cm, facing the side of the hopper and having an inclination of 45 degrees.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0012] 1. The test platform of the drone spreading system designed by the present invention adopts an open platform design, which is compatible with the remote controllers and receivers of all drone spreaders on the market, and is compatible with the durability tests of all current types of drone spreaders on the market, including centrifugal disk type, air jet type, strip sowing type, and material collection of hill-drop planters, etc.; it is suitable for the implementation of cyclic tests for automated and large-scale production, reducing the labor intensity of workers, improving work efficiency, facilitating the implementation of cyclic tests for automated and large-scale production, and making data collection easy and simple.

[0013] 2. When the device of the present invention is used for spreader testing, in addition to improving the test work efficiency, it can also save test materials to a certain extent, and the fully enclosed fuselage can prevent harmful particles from spreading outward and prevent environmental pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is the overall structure diagram of the present invention;

[0015] Figure 2 is the flow chart of the present invention.

[0016] In the figure: 1, test platform; 2, spreading device; 3, control device; 4, data acquisition device; 5, material collection device; 6, remote controller of the feeding device; 7, receiver; 8, power supply device; 9, guiding pipe; 10, driving motor; 11, screw rod; 12, arc-shaped feeding pipe; 13, cross beam; 14, spreader; 15, additional feeding tank; 16, voltage acquisition line; 17, current acquisition line; 18, motor connection line; 19, control board. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0018] Please refer to Figure 1-2, the present invention provides a technical solution: a test platform 1 for an unmanned aerial vehicle (UAV) spreading system, including the test platform 1 for the UAV spreading system. The test platform 1 for the UAV spreading system includes a test platform 1, a spreading device 2, a control device 3, a data acquisition device 4, a material collection device 5, and a feeding device 6. The spreading device 2, the control device 3, and the data acquisition device 4 are mounted on the test platform 1. The control device 3 is composed of a remote controller 7, a receiver 8, and a power supply device 9. The remote controller 7 and the receiver 8 are connected to the spreading device 2 through a line, and the power supply device 9 is connected to the test platform 1 for the UAV spreading system through a line. The material collection device 5 is installed directly below the spreading device 2, and one side of the material collection device 5 is connected to the feeding device 6. The feeding device 6 is composed of a material guiding pipe 10, a driving motor 11, and a screw rod 12. The lower end of the material guiding pipe 10 is connected to the material collection device 5 and forms an arc-shaped discharging pipe 13 at the lower end. The driving motor 11 is installed at the upper end of the material guiding pipe 10, and the power output end is connected to the screw rod 12. The screw rod 12 is disposed inside the material guiding pipe 10.

[0019] Further improved, as Figure 1 shown: The test platform 1 is a 1 m × 1 m × 1.1 m high frame platform carried by universal angle iron and KT board. Two groups of cross beams 14 are symmetrically installed on the surface of the test platform 1, and the spreading device 2 is installed between the two groups of cross beams 14.

[0020] Further improved, as Figure 1 shown: The spreading device 2 includes a spreader 15 and an additional feeding box 16. The additional feeding box 16 is installed on the spreader 15, and the spreader 15 is of the EFT EPS200 model.

[0021] Further improved, as Figure 1 shown: The data acquisition device 4 includes a voltage acquisition line 17, a current acquisition line 18, a motor connection line 19, and a control board 20.

[0022] Further improved, as Figure 1 shown: The material collection device 5 has a sealed box structure, and the spreader 15 is disposed inside the material collection device 5.

[0023] Specifically, the feeding device 6 adopts a stainless steel vertical elevator with a discharge port 1.3 m above the ground, a discharge port pipe length of 78 cm, facing the side of the hopper and having an inclination of 45 degrees.

[0024] Example 1:

[0025] Test purpose:

[0026] Test the flow rate change of materials at different openings of the EFT spreader at a fixed rotational speed;

[0027] Test scheme:

[0028] (Preparation, connection, opening line, H12 assistant, rotation speed line, weighing, feeding, timing, stop timing, stop rotation, record)

[0029] Prepare test materials: adjustable power supply or 14S lithium battery, power conversion cable, Boying flight controller, Y-shaped cable, power management module, Yunzhuo remote controller H12 and receiver, EFT spreader, test bench, test materials, electronic scale, stopwatch, record form, pen;

[0030] Set up the test environment:

[0031] First, fix the EFT spreader. Make a funnel-shaped closed test bench or surround the spreading plate with a large woven bag to collect the discharged materials;

[0032] Connect the flight controller, power module, and receiver. Adjust the DuPont negative wires of the spreader rotation speed line and opening line, and then wrap the negative pole with insulating tape for protection;

[0033] Connect the spreader rotation speed line to the receiver CH9 channel, and the spreader bin door opening line to the receiver CH10 channel; power the spreader with 14S power supply;

[0034] Open the H12 device assistant, select "Advanced Options", enter the password "999", click "Finish", click "OK", select "Remote Control Parameter Adjustment", find "Channel 9", and click the mapping switch to select "A";

[0035] Modify the minimum rudder amount to 1000, the maximum rudder amount to 2000, and click "Save" in the upper right corner; find "Channel 10", click the mapping switch to select "B", and modify the minimum rudder amount to 1000,

[0036] Modify the maximum rudder amount to the data to be tested, such as 2000, and click "Save" in the upper right corner; confirm that other channels do not occupy A and B. If they do, change them to other vacant channels first, and then exit the "H12 Assistant";

[0037] Through the above settings, by modifying the PWM value of the maximum rudder amount of Channel 10, the control of the spreader bin door opening can be achieved by pressing Button B;

[0038] The rotation speed test can be performed by clicking the switch button A set on the remote controller, and the opening test can be performed by clicking Button B to confirm whether it is normal;

[0039] Use a water bucket with a diameter smaller than the spreader opening, weigh 7 kg of urea or 8 kg of compound fertilizer on the electronic scale; press the remote controller button A to make the spreader rotate first;

[0040] Add materials to the bin, press button B on the remote control to open the spreader bin door to the set value, and at the same time start the stopwatch. Stop timing until all the materials are emptied. Record the duration at the corresponding position in the table.

[0041] Summarize and analyze

[0042] Adopt the quantitative timing method: tare the weight of the material bucket at 0.3KG. Each bucket contains 7 kg of urea or 8 kg of compound fertilizer. After setting the rotation speed at 2000 rpm and the bin door opening value, test the time consumed by materials at different openings one by one from 2000 to 1300, and finally obtain the flow value through calculation.

[0043] To prevent excessive human participation error during the experiment, at the same opening, use two spreaders, No. 1 and No. 2, for testing and cross-check the data.

[0044] Test conclusion:

[0045] Through testing with two EFT devices, the urea spreading flow rate of this spreader is from 13 L / Min to 56 L / Min (when the opening is above 30%), and the compound fertilizer spreading flow rate is from 10 L / Min to 48 L / Min (when the opening is above 30%).

[0046] During use: This cyclic test device of the present invention includes a test platform 1, a spreading device 2, a control unit, and a data acquisition device 4 provided on the test platform 1. A sealed material collection device 5 is provided below the spreading device 2 to centrally divert the spread materials into the hopper of the feeding machine. The feeding is realized by driving the screw rod 12 to rotate through a motor, and the materials are diverted to the feeding port of the spreading device 2 through the top pipe. The materials are spread again through the spreader, thus realizing cyclic operation.

[0047] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An unmanned aerial vehicle (UAV) sowing system test platform (1), including the UAV sowing system test platform (1), Characterized in that: The UAV sowing system test platform (1) includes a test platform (1), a sowing device (2), a control device (3), a data acquisition device (4), a material collection device (5) and a feeding device (6). The sowing device (2), the control device (3) and the data acquisition device (4) are mounted on the test platform (1). The control device (3) consists of a remote controller (7), a receiver (8) and a power supply device (9). The remote controller (7) and the receiver (8) are connected to the sowing device (2) through a line. The power supply device (9) is connected to the UAV sowing system test platform (1) through a line. The material collection device (5) is installed directly below the sowing device (2). One side of the material collection device (5) is connected to the feeding device (6). The feeding device (6) consists of a material guiding pipe (10), a driving motor (11) and a screw rod (12). The lower end of the material guiding pipe (10) is connected to the material collection device (5) and forms an arc-shaped blanking pipe (13) at the lower end. The driving motor (11) is installed at the upper end of the material guiding pipe (10) and the power output end is connected to the screw rod (12). The screw rod (12) is placed inside the material guiding pipe (10).

2. The UAV sowing system test platform according to claim 1, Characterized in that: The test platform (1) is a 1m×1m×1.1m high frame platform carried by universal angle iron and KT board. Two groups of cross beams (14) are symmetrically installed on the surface of the test platform (1). The sowing device (2) is installed between the two groups of cross beams (14).

3. The UAV sowing system test platform according to claim 2, Characterized in that: The sowing device (2) includes a spreader (15) and an additional material box (16). The additional material box (16) is installed on the spreader (15). The spreader (15) is of the EFT EPS200 model.

4. The UAV sowing system test platform according to claim 1, Characterized in that: The data acquisition device (4) includes a voltage acquisition line (17), a current acquisition line (18), a motor connection line (19) and a control board (20).

5. The UAV sowing system test platform according to claim 3, Characterized in that: The material collection device (5) has a sealed box structure. The spreader (15) is placed inside the material collection device (5).

6. The UAV sowing system test platform according to claim 1, Characterized in that: The feeding device (6) is a stainless steel vertical elevator. The discharge port is 1.3 meters above the ground. The discharge port pipe is 78 cm long, facing the hopper side and having an inclination of 45 degrees.

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