Grain moisture in-situ detection device

Abstract

The utility model relates to the technical field of grain moisture detection, in particular to a grain moisture in-situ detection device. The grain moisture in-situ detection device comprises a containing block, a power supply assembly, mounting grooves and mounting assemblies, a display screen is arranged on the surface of the containing block, a handle is fixedly connected to one side of the containing block, the power supply assembly is mounted in the bottom end of the handle, and the two mounting grooves are formed in the other side of the containing block; a sensing block is installed on the side, close to the containing block, of the inner wall of the installation groove, an installation block is slidably connected to the inner wall of the installation groove, detection rods are fixedly connected to the interior of the side, away from the installation groove, of the installation block, baffles are fixedly connected to the exteriors of the two detection rods, and a detection head is fixedly connected to the end, away from the installation block, of each detection rod. According to the utility model, the clamping rod can be controlled to be inserted into and separated from the clamping opening on the mounting block by screwing the threaded rod, additional complicated tools are not needed, the operation is simple and convenient, the replacement time is greatly shortened, and the detection delay is reduced.

Description

Technical Field

[0001] This utility model relates to the field of grain moisture detection technology, and in particular to an in-situ grain moisture detection device. Background Technology

[0002] my country's agricultural planting is now and will continue to develop towards standardized, mechanized, and automated planting methods, such as for corn, wheat, and rice. Biological testing of grains is a crucial step in identifying high-quality seeds, and grain quality is also an important guarantee for mechanized harvesting.

[0003] Taking corn as an example, the detection of corn moisture is a crucial and precise step in corn breeding. Traditional moisture content determination requires a large number of corn samples, equipment, and manual operation time. However, in actual corn breeding, due to constraints such as the planting area for breeding new varieties, the number of corn plants that can be planted per square meter, and the number of effective test ears, the number of samples and sampling costs for measuring the moisture content of corn kernels during the grain-filling stage are limited. Based on the common problems of seed damage and the need for large sample sets in current corn kernel moisture detection during the grain-filling stage, this paper proposes to develop a handheld online moisture content detection device. The aim is to reduce the number of samples required in the corn breeding process, save costs, and provide technical support for moisture detection in corn breeding and variety improvement. This will help accelerate the large-scale automation of corn seed breeding and promote the mechanization of corn production.

[0004] Publication number CN119619056A, entitled "In-situ Moisture Detection System and Device for Corn Kernels During Grain Filling Stage," discloses an in-situ moisture detection device. However, this device is bulky and inconvenient to carry, making it unsuitable for rapid detection of moisture content in individual plants. Currently, rapid moisture detection in grain storage utilizes a detection rod and a detection probe. The probe senses changes in capacitance caused by varying moisture content in the grain, thus quickly obtaining the moisture content. However, this detection device has drawbacks: the probes are identical and cannot be replaced. Due to differences in grain morphology and structure, the shape and size of grain kernels differ. For example, wheat and corn kernels are of different sizes. Wheat requires a miniature comb-shaped detection head, while corn kernels require an arc-shaped or clamp-type detection head. This necessitates changing different detection rods and probes during detection. Therefore, it is necessary to provide a rapid in-situ moisture detection device for different crops. Summary of the Invention

[0005] To solve the above-mentioned technical problems, this utility model provides a grain moisture in-situ detection device.

[0006] This utility model provides a grain moisture in-situ detection device, comprising: a receiving block, a power supply component, a mounting groove, and a mounting assembly. A display screen is provided on the surface of the receiving block. A handle is fixedly connected to one side of the receiving block, and the power supply component is installed inside the bottom end of the handle. Two mounting grooves are formed on the other side of the receiving block. A sensor block is installed on the inner wall of the mounting groove near the receiving block, and the mounting block is slidably connected to the inner wall of the mounting groove. Detection rods are fixedly connected to the inner wall of the mounting block away from the mounting groove. Baffles are fixedly connected to the outer sides of the two detection rods. A detection head is fixedly connected to the end of the detection rod away from the mounting block. A transmission line between the detection head and the sensor block is provided inside the detection rod. The detection rod contacts the sensor block through an end plug. The mounting assembly is installed inside the receiving block on the side away from the handle.

[0007] Preferably, the power supply component includes a battery compartment located inside the bottom of the handle, with a battery placed inside the battery compartment. A protective cover is snapped onto the bottom of the inner wall of the battery compartment, and a snap-fit ​​buckle is provided at the bottom of the protective cover.

[0008] Preferably, the mounting assembly includes a threaded groove, which is located inside the receiving block on the side away from the handle. A threaded rod is threadedly connected inside the threaded groove. Engaging openings are provided on adjacent sides of both mounting blocks. Receiving chambers are symmetrically provided on one side of the receiving block. A sliding plate is slidably connected inside the receiving chamber. An engaging rod is fixedly connected inside the sliding plate. A strong spring is sleeved on the outside of the engaging rod.

[0009] Preferably, one side of the mounting block is in contact with one side of the sensing block.

[0010] Preferably, one end of the strong spring is fixedly connected to one side of the inner wall of the receiving chamber, and the other end of the strong spring is fixedly connected to one side of the sliding plate.

[0011] Preferably, the opposite sides of the two engaging rods are respectively inserted into the interior of the two engaging ports.

[0012] Preferably, the two engaging rods have an arc shape on their adjacent sides, and the threaded rod has an arc shape at the end away from the turning disc, with the arc-shaped end of the threaded rod in contact with the arc-shaped ends of the two engaging rods.

[0013] Preferably, a rotating disc is fixedly connected to the side of the threaded rod away from the receiving block.

[0014] Compared with related technologies, the in-situ grain moisture detection device provided by this utility model has the following beneficial effects:

[0015] This utility model adopts an installation assembly including a threaded groove, a threaded rod, a locking port, a receiving chamber, a sliding plate, a locking rod, and a strong spring. When replacing the detection head and the detection rod, the insertion and disengagement of the locking rod with the locking port on the installation block can be controlled by turning the threaded rod. No additional complicated tools are required, making the operation simple, greatly shortening the replacement time, and reducing the delay of the detection work.

[0016] This invention eliminates the need for sampling and testing, enabling analysis of different grains without destructive methods (harvesting the grains). This significantly improves efficiency and productivity in both laboratory and production environments, allowing for rapid detection of grain moisture during crop grain filling. The device is rationally structured, easy to operate, and provides real-time, in-situ detection of grain moisture content in the field. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a grain moisture in-situ detection device provided by this utility model;

[0018] Figure 2 for Figure 1 The diagram shows the structure of the handle;

[0019] Figure 3 for Figure 1 The diagram shows the structure of the receiving block;

[0020] Figure 4 for Figure 3 Enlarged view of point A in the image.

[0021] The following are the labels in the diagram: 1. Receiving block; 2. Display screen; 3. Handle; 4. Battery compartment; 5. Battery; 6. Protective cover; 7. Snap-fit ​​buckle; 8. Mounting slot; 9. Sensor block; 10. Mounting block; 11. Detection rod; 12. Baffle; 13. Detection head; 14. Threaded groove; 15. Threaded rod; 16. Snap-fit ​​opening; 17. Receiving chamber; 18. Sliding plate; 19. Snap-fit ​​rod; 20. Strong spring. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0023] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0024] Please see Figures 1 to 4A grain moisture in-situ detection device includes: a receiving block 1, the surface of which is provided with a display screen 2, which can clearly display data under different lighting conditions, making it convenient for operators to read the grain moisture content value in various environments; a handle 3 is fixedly connected to one side of the receiving block 1, the handle 3 is ergonomically designed, the surface is treated with anti-slip treatment, it is comfortable to hold, and it is convenient for operators to hold it stably for a long time, making it easy to contact the detection device with the grain for detection.

[0025] The power supply component is installed inside the bottom of the handle 3. The power supply component is a key part to ensure the normal operation of the device. The battery compartment 4 is located inside the bottom of the handle 3. The shape and size of the battery compartment 4 can be adapted to standard batteries 5, and it is equipped with metal contacts with good conductivity to ensure a stable electrical connection between the battery and the device circuit. The bottom of the inner wall of the battery compartment 4 is fitted with a protective cover 6. The protective cover 6 fits tightly with the inner wall of the battery compartment 4. The bottom of the protective cover 6 is equipped with a locking buckle 7. The locking buckle 7 is ingeniously designed to provide reliable locking force when closed, preventing external dust, moisture and other substances from entering the battery compartment 4, protecting the battery 5 from external factors and extending the battery life.

[0026] On the other side of the receiving block 1, there are two mounting slots 8. A sensing block 9 is installed on the inner wall of the mounting slot 8 near the receiving block 1. This sensing block 9 contains a capacitance signal conditioning chip and an integrated channel capacitance measurement module with a resolution of 0.1 fF. It can be directly connected to the capacitive sensor plate of the detection head 13 to accurately capture capacitance fluctuations caused by changes in grain moisture. The sensing block 9 integrates a high-sensitivity signal receiving and conversion element, capable of accurately capturing weak signals from the detection head 13 and converting them into processable electrical signals. The sliding fit between the inner wall of the mounting slot 8 and the mounting block 10 allows the mounting block 10 to slide smoothly within the mounting slot 8. One side of the mounting block 10 contacts one side of the sensing block 9. The mounting block 10 has a channel to ensure efficient and stable signal transmission. A detection rod 11 is fixedly connected to the side of the mounting block 10 away from the mounting slot 8. The length and diameter of the detection rod 11 are optimized. The design uses 6061-T6 aluminum alloy tubing, combining lightweight (approximately 150g for a 300mm long detection rod) with corrosion resistance, making it suitable for field operations and easy for operators to use. Two detection rods 11 are externally fixedly connected to baffles 12. A detection head 13 is fixedly connected to the end of the detection rod 11 furthest from the mounting block 10. The front end of the detection head 13 is a comb-shaped, arc-shaped, or clamp-type detection head. A high-precision capacitive sensor is encapsulated inside the detection head 13. The capacitive sensor is connected to the chip in the sensor block 9 via the detection rod 11, enabling it to sensitively detect changes in the dielectric properties of grains due to changes in moisture content, thereby accurately detecting changes in capacitance. Specifically, the mounting block 10 is a cylindrical structure that houses and aligns the tail ends of the detection rods 11. The wiring inside the detection head 13 connects to the plug at the front end of the detection rod 11, and the plug at the tail end of the detection rod 11 is plugged into the sensor 9 to transmit data.

[0027] The mounting assembly is installed inside the receiving block 1 on the side away from the handle 3. This mounting assembly is a key structure for easily replacing the detection head 13 and the detection rod 11. A threaded groove 14 is located inside the receiving block 1 on the side away from the handle 3. The threaded groove 14 fits tightly with the threaded rod 15, ensuring the stability of the threaded rod 15 during screwing in and out. The threaded groove 14 is internally threaded with the threaded rod 15. A rotating disc is fixedly connected to the side of the threaded rod 15 away from the receiving block 1. The surface of the rotating disc has an anti-slip texture, facilitating rotation by hand or with simple tools. Both mounting blocks 10 have locking openings 16 on adjacent sides. A receiving chamber 17 is symmetrically located on one side of the receiving block 1. A sliding plate 18 is slidably connected inside the receiving chamber 17. The sliding plate 18 slides against the inner wall of the receiving chamber 17, ensuring flexible sliding within the receiving chamber 17. The sliding plate 18 is internally fixedly connected... The two locking rods 19 are connected, with their far sides inserted into the interior of the two locking ports 16. This insertion structure provides reliable fixing force for the mounting block 10, ensuring that the detection rod 11 and detection head 13 will not loosen during operation. The two locking rods 19 have arc-shaped openings on their near sides, and the threaded rod 15 has an arc-shaped opening at the end away from the rotating disc. The arc-shaped end of the threaded rod 15 is in contact with the arc-shaped ends of the two locking rods 19. When the threaded rod 15 rotates, the interaction of the arc-shaped surfaces controls the sliding of the locking rods 19. A strong spring 20 is sleeved on the outside of the locking rods 19. The strong spring 20 can provide sufficient elasticity while ensuring its own fatigue life. One end of the strong spring 20 is fixedly connected to one side of the inner wall of the receiving chamber 17, and the other end of the strong spring 20 is fixedly connected to one side of the sliding plate 18. Through the elastic force of the strong spring 20, the locking rods 19 can be automatically reset.

[0028] The working principle of the in-situ grain moisture detection device provided by this utility model is as follows:

[0029] First, open the protective cover 6 of the battery compartment 4. The protective cover 6 is engaged with the bottom of the inner wall of the battery compartment 4 via a snap-fit ​​7. Place the battery 5 into the battery compartment 4 to provide power to the entire device. Then, snap the protective cover 6 back into place to ensure the battery is stably placed and not subject to external interference. The operator holds the handle 3 and uses it to bring the detection rod 11 and the detection head 13 into contact with the grain on the plant. During insertion, ensure that the detection head 13 makes full contact with the grain to obtain accurate detection data. The sensor in the detection head 13 then begins to function. The principle is to sense the change in capacitance caused by the different moisture contents of the grain as a dielectric. Its dielectric properties will change, resulting in differences in capacitance value. The sensor in the detection head 13 transmits the detected capacitance value change signal to the sensing block 9 on the inner wall of the mounting groove 8 near the receiving block 1. After the sensing block 9 performs preliminary processing and conversion on the signal, it transmits it to the processing unit inside the receiving block 1. The processing unit converts the received signal into a specific grain moisture content value according to the preset algorithm and model. The processed grain moisture content value is displayed on the display screen 2 on the surface of the receiving block 1. The operator can intuitively read the current grain moisture content data from the display screen 2, thereby judging whether the moisture status of the grain meets the storage or processing requirements.

[0030] When the detection head 13 and detection rod 11 need to be replaced, locate the threaded rod 15 on the side of the receiving block 1 away from the handle 3. A rotating disc is fixedly connected to the side of the threaded rod 15 away from the receiving block 1. The operator rotates the rotating disc, causing the threaded rod 15 to rotate within the threaded groove 14 and retract outwards. This removes the compressive force on the locking rod 19. Without compression, the sliding plate 18, due to the release of the force of the strong spring 20, disengages the locking rod 19 from the inner wall of the locking port 16, placing the locking rod 19 out of contact with the locking port 16 on the mounting block 10. At this point, the operator can remove the mounting block 10 with the damaged detection rod 11 and detection head 13 from the mounting groove 8. When installation is required, the operator holds the mounting block 10 corresponding to the new detection rod 11 and detection head 13, aligning the mounting block 10 with the mounting plate 10. Insert the mounting block 10 into the mounting slot 8 smoothly. During insertion, ensure the mounting block 10 is oriented correctly and that the engaging slot 16 on the mounting block 10 is accurately aligned with the engaging rod 19 in the receiving chamber 17. Simultaneously, observe the contact between the detection rod 11 and the sensing block 9 to ensure sufficient contact for smooth signal transmission. Once the mounting block 10 is fully inserted into the mounting slot 8, the operator reverses the rotation of the screw plate on the threaded rod 15, causing the threaded rod 15 to screw into the threaded groove 14. As the threaded rod 15 screws in, its arc-shaped end gradually approaches and contacts the arc-shaped end of the engaging rod 19, applying force to the engaging rod 19. This causes the engaging rod 19 to drive the sliding plate 18 to compress the powerful spring 20, and the non-arc end of the engaging rod 19 will be fully inserted into the engaging slot 16, thus securing the new component.

Claims

1. A grain moisture in-situ detection device, characterized in that, include: A receiving block (1) is provided with a display screen (2) on its surface, and a handle (3) is fixedly connected to one side of the receiving block (1). The power supply component is installed inside the bottom of the handle (3); The mounting groove (8) is provided on the other side of the receiving block (1). Two mounting grooves (8) are provided on the inner wall of the mounting groove (8) near the receiving block (1). A sensing block (9) is installed on the inner wall of the mounting groove (8). A mounting block (10) is slidably connected to the inner wall of the mounting groove (8). A detection rod (11) is fixedly connected inside the side of the mounting block (10) away from the mounting groove (8). A baffle (12) is fixedly connected to the outside of the two detection rods (11). A detection head (13) is fixedly connected to the end of the detection rod (11) away from the mounting block (10). A line for transmission between the detection head (13) and the sensing block (9) is provided inside the detection rod (11). The detection rod (11) is connected to the sensing block (9) by plugging in the end plug. The mounting component is installed inside the side of the receiving block (1) away from the handle (3).

2. The in-situ grain moisture detection device according to claim 1, characterized in that, The power supply component includes a battery compartment (4), which is located inside the bottom of the handle (3). A battery (5) is placed inside the battery compartment (4). A protective cover (6) is snapped onto the bottom of the inner wall of the battery compartment (4), and a snap fastener (7) is provided at the bottom of the protective cover (6).

3. The in-situ grain moisture detection device according to claim 1, characterized in that, The mounting assembly includes a threaded groove (14), which is located inside the receiving block (1) on the side away from the handle (3). A threaded rod (15) is threaded inside the threaded groove (14). A locking port (16) is provided on the adjacent side of both mounting blocks (10). A receiving chamber (17) is symmetrically provided on one side of the receiving block (1). A sliding plate (18) is slidably connected inside the receiving chamber (17). A locking rod (19) is fixedly connected inside the sliding plate (18). A strong spring (20) is sleeved on the outside of the locking rod (19).

4. The in-situ grain moisture detection device according to claim 1, characterized in that, One side of the mounting block (10) is in contact with one side of the sensing block (9).

5. The in-situ grain moisture detection device according to claim 3, characterized in that, One end of the strong spring (20) is fixedly connected to one side of the inner wall of the receiving chamber (17), and the other end of the strong spring (20) is fixedly connected to one side of the sliding plate (18).

6. The in-situ grain moisture detection device according to claim 3, characterized in that, The two locking rods (19) are respectively inserted into the interior of the two locking ports (16) on opposite sides.

7. The in-situ grain moisture detection device according to claim 3, characterized in that, Both of the two engaging rods (19) have an arc shape on their adjacent sides, and the threaded rod (15) has an arc shape at the end away from the rotating disc. The arc-shaped end of the threaded rod (15) is in contact with the arc-shaped ends of the two engaging rods (19).

8. The in-situ grain moisture detection device according to claim 3, characterized in that, A screwing disc is fixedly connected to the side of the threaded rod (15) away from the receiving block (1).

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