A plant protection drone residual material detection device

Abstract

A residue detection device for agricultural drones relates to the field of residue detection technology. It addresses the problems of poor reliability, low detection accuracy, and high cost in existing residue detection devices for agricultural drones. The device includes a stirring rod and a stirring chamber, and further includes an elastic reset component, a detection component, a first magnetic component, and a second magnetic component. The elastic reset component is disposed within the stirring chamber and fixed to the stirring rod, used to drive the stirring rod to reset. The first magnetic component is disposed within the stirring chamber and fixed to the stirring rod. The second magnetic component is fixed to the stirring chamber, and when the stirring rod resets, the first and second magnetic components are located on the same horizontal line. The detection component is fixed within the stirring chamber and used to detect the relative position of the first and second magnetic components. This invention is applicable to residue detection in agricultural drones.

Description

Technical Field

[0001] This invention relates to the field of residual material detection technology. Background Technology

[0002] Agricultural drones perform crop protection tasks on a drone platform. These typically include operations such as spraying chemical pesticides, irrigating, fertilizing, weeding, and sowing seeds. When an agricultural drone sows seeds, if the seed box is empty but the drone continues flying, some areas may remain unsown, making it impossible for workers to identify these areas and resulting in malnutrition and impacting overall crop yield. Similarly, when an agricultural drone sows fertilizer, if the seed box is empty but the drone continues flying, some areas may remain unsprayed, leading to malnutrition and further affecting overall crop yield. Likewise, when an agricultural drone sows pesticides, if the seed box is empty but the drone continues flying, some areas may remain unsprayed, causing damage to crops and ultimately impacting overall crop yield.

[0003] In conclusion, residual material detection inside agricultural drones is a crucial step in agricultural operations; therefore, solving this problem is of paramount importance.

[0004] Currently, there are two main methods for detecting residual material on agricultural drones. One is radar detection, which has low accuracy, limited installation locations, and high costs, leading to high residual material costs for drones. The second method uses motor stall signals to detect residual material. However, motor stall detection is unreliable and has low accuracy due to potential motor malfunctions that could cause false detections. Summary of the Invention

[0005] This invention addresses the problems of poor reliability, low detection accuracy, and high cost in existing agricultural drone residue detection devices.

[0006] To achieve the above objectives, the present invention provides the following solution:

[0007] This invention provides a residual material detection device for agricultural drones. The device includes a stirring rod and a stirring chamber, and further includes an elastic reset component, a detection component, a first magnetic component, and a second magnetic component.

[0008] The elastic reset component is disposed inside the mixing chamber and fixed on the mixing rod, and is used to drive the mixing rod to reset;

[0009] The first magnetic component is disposed inside the stirring chamber and fixed to the stirring rod;

[0010] The second magnetic component is fixed to the stirring chamber, and when the stirring rod is reset, the first magnetic component and the second magnetic component are on the same horizontal line;

[0011] The detection component is fixed inside the mixing chamber and is used to detect the relative positions of the first magnetic component and the second magnetic component.

[0012] Furthermore, in a preferred embodiment, the above-mentioned elastic reset assembly includes a reset spring, a reset block, and a reset base;

[0013] One end of the reset spring is fixed to the stirring rod, and the other end of the reset spring is fixed to the reset block;

[0014] The reset block is fixed on the reset chassis.

[0015] Furthermore, in a preferred embodiment, both the first magnetic component and the second magnetic component are implemented using permanent magnets.

[0016] Furthermore, in a preferred embodiment, the detection component includes a Hall effect sensor plate and several magnets;

[0017] The several magnets are fixed to the Hall sensor plate;

[0018] The Hall sensor plate is used to detect the relative positions of the first magnetic component and the second magnetic component.

[0019] Furthermore, in a preferred embodiment, the above-described device further includes a processor;

[0020] The processor is used to receive and process the data detected by the Hall sensor.

[0021] Furthermore, in a preferred embodiment, the above-mentioned device further includes an audible and visual alarm module;

[0022] The audible and visual alarm module is connected to the data output terminal of the processor and is used to implement audible and visual alarms.

[0023] Furthermore, in a preferred embodiment, the above-described device also includes a display screen;

[0024] The display screen is connected to the data output terminal of the processor and is used to display the data processing status.

[0025] Furthermore, in a preferred embodiment, the above-mentioned device further includes a wireless communication module;

[0026] The wireless communication module is connected to the data output terminal of the processor and is used to realize wireless transmission.

[0027] The beneficial effects of this invention are as follows:

[0028] 1. Existing methods for detecting residual material in agricultural drones rely on motor stall signals. However, motor stall can lead to false detections due to potential motor malfunctions, resulting in poor reliability and low accuracy. This invention provides a residual material detection device for agricultural drones. It incorporates an elastic reset component on the stirring rod, allowing the rod to reset when no material is present. Furthermore, it includes magnetic components on both the stirring rod and the stirring chamber. When no material is present, the stirring rod resets again under the elastic reset component, aligning the magnetic components on the stirring rod and the stirring chamber on the same axis. The detection component then senses that the magnetic lines of force from both components are on the same axis, indicating no residual material in the agricultural drone. This solves the problems of poor reliability and low accuracy associated with existing methods using motor stall signals for residual material detection in agricultural drones.

[0029] 2. This invention provides a device for detecting residual material from agricultural drones. The detection component uses a Hall sensor to sense the magnetic lines of force on the stirring rod and the magnetic components on the stirring chamber. The Hall sensor does not need to directly touch the material to achieve the detection function, so the Hall sensor will not be contaminated or worn. That is, the Hall sensor has a longer lifespan and improves the reliability of residual material detection in agricultural drones.

[0030] This invention is applicable to the detection of residual materials in agricultural drones. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the structure of a plant protection drone residue detection device as described in Embodiment 1;

[0032] Figure 2 This is a schematic diagram of the stirring assembly described in Embodiment 1;

[0033] Figure 3 This is a schematic diagram of the detection component described in Embodiment 1.

[0034] Among them, 1-stirring rod, 2-detection component, 20-Hall sensor plate, 21-magnet, 3-stirring chamber, 4-elastic reset component, 40-reset spring, 41-reset block, 42-reset chassis, 5-first magnetic component, 6-second magnetic component. Detailed Implementation

[0035] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and examples. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention.

[0036] Implementation Method 1. See [link / reference] Figure 1 This embodiment describes a device for detecting residual material from agricultural drones.

[0037] The device includes a stirring rod 1, a stirring chamber 3, an elastic reset assembly 4, a detection assembly 2, a first magnetic assembly 5, and a second magnetic assembly 6;

[0038] The elastic reset component 4 is disposed inside the stirring chamber 3 and fixed on the stirring rod 1, and is used to drive the stirring rod 1 to reset;

[0039] The first magnetic component 5 is disposed inside the stirring chamber 3 and fixed to the stirring rod 1;

[0040] The second magnetic component 6 is fixed on the stirring chamber 3, and when the stirring rod 1 is reset, the first magnetic component 5 and the second magnetic component 6 are located on the same horizontal line;

[0041] The detection component 2 is fixed inside the stirring chamber 3 and is used to detect the relative positions of the first magnetic component 5 and the second magnetic component 6.

[0042] In practical applications, this implementation method, such as Figure 1 As shown, the elastic reset component 4 is fixed to the stirring rod 1. When there is no material in the material box, the stirring rod 1 resets under the action of the elastic reset component 4. The first magnetic component 5 is fixed to the stirring rod 1, and the second magnetic component is fixed inside the stirring chamber 3. When the stirring rod 1 resets, the first magnetic component 5 and the second magnetic component 6 are on the same horizontal line. When there is no material, the stirring rod 1 resets under the action of the elastic reset component 4. A detection component is used to detect whether the first magnetic component 5 and the second magnetic component 6 are on the same horizontal line. If they are on the same horizontal line, it proves that there is no material; if they are not, it proves that there is material.

[0043] Existing methods for detecting residual material on agricultural drones rely on motor stall signals. However, motor stall can lead to false detections due to potential motor malfunctions, resulting in poor reliability and low accuracy. This invention provides a residual material detection device for agricultural drones. It incorporates an elastic reset component on the stirring rod, allowing the rod to reset when no material is present. Magnetic components are installed on both the stirring rod and the stirring chamber. When no material is present, the stirring rod resets again, aligning the magnetic components on both the rod and chamber onto the same axis. The detection component then senses that the magnetic lines of force from both components are aligned, indicating no residual material on the drone. This solution addresses the reliability and accuracy issues inherent in existing methods that rely on motor stall signals for residual material detection.

[0044] Implementation Method 2. See also Figure 2 This embodiment is described by way of example of the elastic reset component 4 in the plant protection drone residue detection device described in Embodiment 1. The elastic reset component 4 includes a reset spring 40, a reset block 41 and a reset base 42.

[0045] One end of the reset spring 40 is fixed to the stirring rod 1, and the other end of the reset spring 40 is fixed to the reset block 41;

[0046] The reset block 41 is fixed on the reset base 42.

[0047] In practical applications, this implementation method, such as Figure 2 As shown, the elastic reset assembly 4 includes a reset spring 40, a reset block 41, and a reset base 42. One end of the reset spring 40 is fixed to the stirring rod 1, and the other end is fixed to the reset block 41. The reset block 41 is fixed to the reset base 42. When there is no material, the stirring rod 1 resets under the elasticity of the reset spring 40.

[0048] Implementation Method 3. This implementation method is an example of the first magnetic component 5 and the second magnetic component 6 in the plant protection drone residue detection device described in Implementation Method 1. Both the first magnetic component 5 and the second magnetic component 6 are implemented using permanent magnets.

[0049] In practical applications, both the first magnetic component 5 and the second magnetic component 6 in this embodiment are implemented using permanent magnets.

[0050] Permanent magnets can generate a persistent magnetic field. In application, electromagnets, soft magnets, and hard magnets can be selected according to actual needs. Among them, electromagnets are controllable, and the magnetism of the electromagnet can be turned off when the agricultural drone is not working.

[0051] Implementation Method Four. See also Figure 3 This embodiment is described by way of example of the detection component 2 in the plant protection drone residue detection device described in Embodiment 1. The detection component 2 includes a Hall sensor plate 20 and several magnets 21.

[0052] The plurality of magnets 21 are fixed on the Hall sensor plate 20;

[0053] The Hall sensor plate 20 is used to detect the relative positions of the first magnetic component 5 and the second magnetic component 6.

[0054] In practical applications, this implementation method, such as Figure 2 As shown, several magnets 21 are fixed on the Hall sensor plate 20, which is used to detect the relative position of the first magnetic component 5 and the second magnetic component 6. In practical applications, the number of magnets 21 can be flexibly increased according to actual working requirements.

[0055] This embodiment provides a device for detecting residual material from agricultural drones. The detection component uses a Hall sensor to sense the magnetic lines of force on the stirring rod and the magnetic components on the stirring chamber. Since the Hall sensor does not need to directly touch the material to achieve the detection function, the Hall sensor will not be contaminated or worn. That is, the Hall sensor has a longer lifespan and improves the reliability of residual material detection in agricultural drones.

[0056] Implementation Method 5. This implementation method adds a processor to the plant protection drone residue detection device described in Implementation Method 4;

[0057] The processor is used to receive and process the data detected by the Hall sensor 20.

[0058] In practical applications, this embodiment adds a processor, which is connected to the data output terminal of the Hall sensor 20 to receive and process the data detected by the Hall sensor 20.

[0059] Implementation Method Six. This implementation method is based on the plant protection drone residual material detection device described in Implementation Method Four, with the addition of an audible and visual alarm module;

[0060] The audible and visual alarm module is connected to the data output terminal of the processor and is used to implement audible and visual alarms.

[0061] In practical applications, this embodiment adds an audible and visual alarm module, which is connected to the data output terminal of the processor to implement an audible and visual alarm. When the Hall sensor 20 detects no material, it sends data to the processor. The processor processes the data and sends it to the audible and visual alarm module to trigger an audible and visual alarm, alerting the staff.

[0062] Implementation Method Seven. This implementation method adds a display screen to the plant protection drone residue detection device described in Implementation Method Five;

[0063] The display screen is connected to the data output terminal of the processor and is used to display the data processing status.

[0064] In practical applications, this embodiment adds a display screen. When the Hall sensor 20 detects no material, it sends the data to the processor. The processor converts the analog signal of the data into a digital signal and sends it to the display screen for display, thus reminding the staff.

[0065] Implementation Method 8. This implementation method is based on the plant protection drone residue detection device described in Implementation Method 5, with the addition of a wireless communication module;

[0066] The wireless communication module is connected to the data output terminal of the processor and is used to realize wireless transmission.

[0067] In practical applications, this embodiment adds a wireless communication module, which is connected to the processor's data output terminal for wireless transmission. When the Hall sensor 20 detects no material, it sends data to the processor, which then sends the data to the wireless communication module. The wireless communication module then sends the data to the worker's wireless terminal, allowing the worker to know that the agricultural drone is out of material without stopping it.

[0068] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0069] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0070] The above description is merely an embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A plant protection unmanned aerial vehicle excess material detection device, the device comprising a stirring rod (1) and a stirring cabin (3), characterized in that, The device further comprises an elastic reset component (4), a detection component (2), a first magnetic component (5) and a second magnetic component (6); The elastic reset component (4) is arranged in the stirring cabin (3) and fixed on the stirring rod (1) to drive the stirring rod (1) to reset; The elastic reset component (4) comprises a reset spring (40), a reset block (41) and a reset base (42); One end of the reset spring (40) is fixed on the stirring rod (1), and the other end of the reset spring (40) is fixed on the reset block (41); The reset block (41) is fixed on the reset base (42); The first magnetic component (5) is arranged in the stirring cabin (3) and fixed on the stirring rod (1); The second magnetic component (6) is fixed on the stirring cabin (3), and the first magnetic component (5) and the second magnetic component (6) are located on the same horizontal line when the stirring rod (1) resets; The detection component (2) is fixed in the stirring cabin (3) to detect the relative positions of the first magnetic component (5) and the second magnetic component (6); The detection component (2) comprises a Hall induction plate (20) and a plurality of magnets (21); The plurality of magnets (21) are fixed on the Hall induction plate (20); The Hall induction plate (20) is used to detect the relative positions of the first magnetic component (5) and the second magnetic component (6); When there is no material, the stirring rod (1) resets under the action of the elastic reset component (4), and the detection component (2) is used to detect whether the first magnetic component (5) and the second magnetic component (6) are located on the same horizontal line, if yes, it proves that there is no material, and if not, it proves that there is material. 2.The plant protection unmanned aerial vehicle excess material detection device according to claim 1, characterized in that, Both the first magnetic component (5) and the second magnetic component (6) are implemented by permanent magnets. 3.The device according to claim 1, characterized in that, The device further comprises a processor; The processor is used to receive data detected by the Hall induction plate (20) and process the data.

4. The device according to claim 3, characterized in that, The device further comprises an audible and visual alarm module; The audible and visual alarm module is connected to the data output end of the processor to realize audible and visual alarm.

5. The device according to claim 3, characterized in that, The device further comprises a display screen; The display screen is connected to the data output end of the processor to display data processing conditions.

6. The device according to claim 3, characterized in that, The device further comprises a wireless communication module; The wireless communication module is connected to the data output end of the processor to realize wireless transmission.

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