Sensing device for precision agriculture of agricultural machinery

Abstract

The invention provides a sensing device for precision agriculture of agricultural machinery, and relates to the technical field of intelligent agricultural management.The sensing device comprises a mounting shell, a transmission mechanism is slidably connected to the mounting shell, the transmission mechanism comprises a transmission frame, a measuring guide wheel, a conduction assembly and a curved surface wheel, and a control assembly is fixedly mounted on a horizontal sliding block; the control assembly comprises an abutting frame, a control guide wheel, a compensation spring and an angular velocity sensor, the control guide wheel abuts against the middle of the outer wall of the curved surface wheel, and the angular velocity sensor is installed on the control guide wheel. According to the invention, the vibration frequency and amplitude of the measurement guide wheel in the advancing process at the concave-convex position on the ground are controlled to change the transmission ratio of the sensing disc to the curved wheel and the transmission ratio of the curved wheel to the control guide wheel, so that the invalid stroke of the measurement guide wheel is compensated and eliminated, and the rotation of the control guide disc can accurately reflect the actual horizontal displacement according to the proportion; the seed metering speed of the seed metering device is controlled through the angular velocity sensor, so that the planting distance of crops is more accurate.

Description

Technical Field

[0001] The present invention relates to the field of smart agricultural management technology, and in particular to a sensor device for precision agriculture of agricultural machinery. Background Art

[0002] Precision agriculture, also known as precision farming or fine farming, is a system of modern agricultural operations and management that is supported by information technology and implements positioning, timing and quantification based on spatial variation.

[0003] The purpose of controlling plant spacing in precision agriculture is to optimize the growth environment of crops and improve the utilization rate of light energy, ensuring that each plant can obtain the best growth conditions and avoid excessive competition for resources among plants. At the same time, it makes full use of light energy and improves the utilization rate of light energy, thereby increasing crop yields.

[0004] The water supply and fertilization of precision agriculture usually adopts drip irrigation technology. The water and fertilizer integrated equipment is connected to the drip irrigation belt in the field through the main pipeline. The drip irrigation pipe laid under the ground film delivers water and fertilizer to the roots of plants for watering and fertilizer supply. The equidistant drip irrigation holes on the drip irrigation belt are usually prefabricated. Therefore, if the sowing deviation of the seeder occurs, the drip irrigation hole and the seed will be misaligned, resulting in inaccurate drip irrigation position, which will cause water waste and affect crop growth.

[0005] In existing seeders, a motor is usually used to drive a seed meter to discharge seeds to complete the sowing process, and the sowing speed is controlled by the rotation speed of the motor to adjust the crop spacing. During this sowing process, the tractor in front of the seeder needs to be kept pulling the seeder forward at a constant speed to ensure the accuracy of the crop sowing spacing. However, cultivated land is usually uneven, with continuous bumps and pits, and factors such as different ground hardness will affect the traction speed, thereby affecting the crop sowing spacing, and causing misalignment between the drip irrigation holes and the crops. Summary of the invention

[0006] 1. Technical issues to be resolved

[0007] In view of the deficiencies in the prior art, the present invention provides a sensor device for precision agriculture of agricultural machinery, which solves the problems raised in the above-mentioned background technology.

[0008] (II) Technical solution

[0009] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0010] A sensor device for precision agriculture of agricultural machinery comprises a mounting shell, a transmission mechanism is slidably connected to the mounting shell, the transmission mechanism comprises a transmission frame, a measuring guide wheel, a conduction component and a curved wheel, the transmission frame is slidably mounted on the mounting shell, a resistance spring is connected between the mounting shell and the transmission frame, the measuring guide wheel is rotatably mounted on the lower end of the transmission frame, the measuring guide wheel resists the ground, the curved wheel is rotatably connected to the transmission frame, the transmission component is connected between the curved wheel and the measuring guide wheel, a control component is slidably mounted on the mounting shell, the control component comprises a resistance frame, a control guide wheel, a compensation spring and an angular velocity sensor, the resistance frame is slidably mounted on the mounting shell, the control guide wheel resists the middle part of the curved wheel, the compensation spring is connected between the resistance frame and the mounting shell, the angular velocity sensor is mounted on the control guide wheel, and the angular velocity sensor is connected to the motor of a seed meter.

[0011] Preferably, the transmission component includes a transmission guide wheel, an adjusting shaft, a sensor disk, an adjusting slide rod, a return spring, a compensation cylinder and a displacement sensor, the transmission guide wheel is fixed on the adjusting shaft rod, the adjusting shaft rod is rotatably connected to the transmission frame, the transmission guide wheel and the measuring guide wheel contact each other, the sensor disk is slidingly sleeved on the adjusting shaft rod, the sensor disk contacts the lower side of the curved wheel, the adjusting slide rod is slidingly connected to the adjusting shaft rod, the sensor disk is fixed on the front end of the adjusting slide rod, the rear end of the adjusting slide rod is provided with a connecting block, the connecting block is provided with a contact slot hole, the compensation cylinder is fixed on the transmission frame, a contact block is provided on the cylinder arm of the compensation cylinder, the contact block is penetrated in the contact slot hole, the contact block contacts an arc surface on one side of the contact slot hole, the return spring is connected between the adjusting shaft rod and the connecting block, the displacement sensor is fixed on the transmission frame, and the displacement sensor is connected to the compensation cylinder.

[0012] Preferably, the diameter of the sensor disc is larger than the diameter of the transmission guide wheel.

[0013] Preferably, the abutment frame is configured as a frame, a control shaft is threadedly connected to the abutment frame, and the control guide wheel is rotatably connected to the lower end of the control shaft.

[0014] Preferably, a scraper plate is installed on the transmission frame, and the front end of the scraper plate is concave-convexly matched with the outer edge of the measuring guide wheel. A mounting groove is opened on the inner wall of the rear side of the scraper plate, and a vibration component is fixed to the wall of the mounting groove. The vibration component includes a connecting beam fixed in the mounting groove and vibration bow pieces symmetrically fixed on both sides of the connecting beam, the middle part of the vibration bow piece is fixed on the connecting beam, and the front ends of the two vibration bow pieces are connected to the vibration beam, and the vibration beam is concave-convexly matched to abut against the outer edge of the measuring guide wheel, and the rear side of the vibration bow piece is bent and extended downward, and toggle dials are fixed on both sides of the measuring guide wheel, and a plurality of toggle plates are arranged on the inner side of the toggle dial, and the outer ends of the toggle plates abut against the rear side of the vibration bow piece.

[0015] Preferably, the toggle piece is arranged to be arc-shaped, and the direction of the curved protrusion of the toggle piece is consistent with the rotation direction of the measuring guide wheel.

[0016] Preferably, a side wall of the mounting groove facing the vibration bow piece is provided with a V-shaped protrusion, and the V-shaped protrusion gradually increases in width from the side close to the elastic bow piece toward the front side until it is flush with the side walls of the scraper plate.

[0017] (III) Beneficial effects

[0018] The present invention provides a sensor device for precision agriculture of agricultural machinery. It has the following beneficial effects:

[0019] 1. In the present invention, the measuring guide wheel contacts the ground. As the unevenness of the ground contacts the transmission mechanism on the mounting shell, the displacement sensor can control the extension and retraction of the compensation motor according to the frequency of the vibration, and control the sliding of the sensor disk to adjust the contact position between the sensor disk and the curved wheel. The transmission ratio of the sensor disk and the curved wheel is adjusted by the vibration frequency to compensate for the travel loss of the measuring guide wheel during the vibration process.

[0020] 2. In the present invention, under the action of the resistance spring, the transmission component vibrates along with the unevenness of the ground, so that the amplitude of the unevenness of the transmission component and the ground remain consistent, the contact height position of the curved wheel and the control guide wheel is changed, and the transmission ratio of the curved wheel and the control guide wheel is changed, so as to compensate for the travel loss of the measuring guide wheel caused by unevenness of different depths.

[0021] 3. In summary, by compensating the loss of the measuring guide wheel through amplitude and frequency, the control guide wheel can measure the accurate horizontal stroke, and the speed of the control guide wheel is measured by the angular velocity sensor to control the seeding speed of the seed meter to ensure the accuracy of the plant spacing. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of a sensor device for precision agriculture of agricultural machinery according to the present invention;

[0023] Figure 2It is a front view of a sensor device for precision agriculture of agricultural machinery of the present invention;

[0024] Figure 3 It is a structural schematic diagram of the transmission mechanism in the present invention;

[0025] Figure 4 The structure of the dust scraper in the present invention is shown in FIG. Figure 1 ;

[0026] Figure 5 The structure of the dust scraper in the present invention is shown in FIG. Figure 2 .

[0027] In the figure: 1. Mounting shell; 2. Transmission frame; 3. Measuring guide wheel; 4. Curved wheel; 5. Resistance spring; 6. Resistance frame; 7. Control guide wheel; 8. Compensation spring; 9. Angular velocity sensor; 10. Transmission guide wheel; 11. Adjustment shaft; 12. Sensor disk; 13. Adjustment slide rod; 14. Reset spring; 15. Compensation cylinder; 16. Displacement sensor; 17. Connecting block; 18. Resistance block; 19. Dust scraper; 20. Connecting beam; 21. Vibration bow piece; 22. Vibration beam; 23. Toggle dial; 24. Toggle piece; 25. V-shaped protrusion. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0029] The embodiment of the present invention provides a sensor device for precision agriculture of agricultural machinery.

[0030] like Figure 1-5 As shown, it includes a mounting shell 1, on which a transmission mechanism is slidably connected, and the transmission mechanism includes a transmission frame 2, a measuring guide wheel 3, a conduction component and a curved wheel 4. A vertical guide rail is provided on the mounting shell 1, and a vertical slider is fixed on the transmission frame 2. The transmission frame 2 is slidably mounted on the mounting shell 1, and a resistance spring 5 is connected between the mounting shell 1 and the transmission frame 2. A measuring shaft is provided in the middle of the measuring guide wheel 3, and the measuring guide wheel 3 is rotatably mounted at the lower end of the transmission frame 2. The measuring guide wheel 3 is in contact with the ground. When the measuring guide wheel 3 moves forward on the ground, the resistance spring 5 will resist the transmission frame 2, so that the measuring guide wheel 3 always keeps in contact with the ground, that is, it can be considered that the rotation stroke of the measuring guide wheel 3 is equal to the outer edge stroke of the concave and convex surface of the ground, and maintains the same vibration and amplitude as the ground during the movement.

[0031] A curved wheel 4 shaft extends vertically downward from the transmission frame 2, and the curved wheel 4 is rotatably connected to the curved wheel 4 shaft. A speed change plate 5 is provided on the lower side of the curved wheel 4, and the transmission assembly is connected between the curved wheel 4 and the measuring guide wheel 3. A horizontal slide rail is fixed on the mounting shell 1, and a horizontal slider is slidably mounted on the horizontal slide rail, and a control assembly is fixedly mounted on the horizontal slider.

[0032] The control assembly includes a contact frame 6, a control guide wheel 7, a compensation spring 8 and an angular velocity sensor 9. The contact frame 6 is provided with a frame-shaped opening on one side. An adjusting nut is provided on the contact frame 6. An adjusting bolt is integrally formed on the upper end of the control shaft that passes through the contact frame 6. The adjusting bolt is threadedly connected to the adjusting nut. The control guide wheel 7 is rotatably connected to the lower end of the control shaft. The control guide wheel 7 is in contact with the middle of the outer wall of the curved wheel 4. The compensation spring 8 is connected between the contact frame 6 and the mounting shell 1. Under the action of the compensation spring 8, the control guide wheel 7 is in contact with the outer edge of the curved wheel 4. During the vibration of the transmission mechanism, the curved wheel 4 slides up and down, causing the control guide wheel 7 to slide. 7 abuts against the positions of the curved wheel 4 at different heights. The different outer diameters of the curved wheel 4 at different heights can change the transmission wall of the curved wheel 4 and the control guide wheel 7, and can compensate for the arc surface displacement formed by pits or protrusions on the ground, so that the rotation of the control guide wheel 7 is closer to the horizontal displacement of the measuring guide wheel 3. The angular velocity sensor is installed on the control guide wheel 7. The rotation angle of the control guide wheel 7 measured according to the angular velocity can reflect the rotation speed of the control guide wheel 7. The angular velocity sensor 9 is connected to the motor of the seed metering device. By eliminating the redundant stroke at the concave and convex positions of the ground, the control of the angular velocity sensor 9 is closer to the actual horizontal displacement, so as to ensure that the spacing between crops is more accurate.

[0033] like Figure 1 , 2 3, the transmission assembly includes a transmission guide wheel 10, an adjusting shaft 11, a sensor disc 12, an adjusting slide rod 13, a reset spring 14, a compensation cylinder 15 and a displacement sensor 16, the transmission guide wheel 10 is fixed on the adjusting shaft 11, the adjusting shaft 11 is rotatably connected to the transmission frame 2, the transmission guide wheel 10 and the measuring guide wheel 3 are in conflict with each other, the sensor disc 12 is slidably sleeved on the adjusting shaft 11, and the sensor disc 12 is in conflict with the variable displacement sensor 16 at the lower end of the curved wheel 4. On the speed plate 5, the outer edge of the adjusting shaft 11 is provided with a plurality of sliding grooves, the adjusting slide rod 13 includes a slide rod sheet and a plurality of adjusting sliding claws at two sections on the slide rod sheet, the adjusting sliding claws are slidingly connected in the sliding grooves, the front end of the adjusting sliding claws is fixed on the sensor plate 12, and the horizontal position of the sensor plate 12 can be adjusted by adjusting the slide rod 13, so as to adjust the rotation radius of the contact position between the outer edge of the sensor plate 12 and the speed plate 5, and the transmission ratio of the sensor plate 12 and the speed plate 5 can be adjusted.

[0034] A connecting block 17 is provided at the rear end of the adjusting slide rod 13, and a resistance slot is provided on the connecting block 17. The compensating cylinder 15 is fixed on the transmission frame 2. A resistance block 18 is provided on the cylinder 15 arm of the compensating cylinder 15. The resistance block 18 is penetrated in the resistance slot, and the inner side of the resistance block 18 is in resistance to the inner wall of the resistance slot. The reset spring 14 is connected between the adjusting shaft rod 11 and the connecting block 17. Under the support of the reset spring 14, the resistance slot of the connecting block 17 is in resistance to the resistance block 18. The resistance block 18 is in resistance to a side of the resistance slot which is set as an arc surface. The reset spring 14 is connected between the adjusting shaft rod 11 and the connecting block 17. The displacement sensor 16 is fixed at On the transmission frame 2, the displacement sensor 16 is connected to the compensation cylinder 15. The displacement sensor 16 can read the vertical displacement of the transmission mechanism to determine the vibration frequency of the transmission mechanism on the ground. It can be seen from the vibration frequency that the higher the vibration frequency, the greater the invalid stroke of the measuring guide wheel 3 at the concave and convex position of the ground. The compensation cylinder 15 can be controlled to retract and retract, and the arc surface of the abutment block 18 abuts the connecting block 17 to change the horizontal position of the sensor disk 12. The transmission ratio is changed through the rotation radius of the outer edge of the sensor disk 12 and the speed change disk 5 to compensate for and eliminate the invalid formation of the measuring guide wheel 3, so that the rotation speed of the control guide disk is closer to the actual horizontal displacement, the clock speed of the seed meter is related to the horizontal displacement, and the crop spacing is more accurate.

[0035] like Figure 3 , 4 As shown in Figure 5, a scraper plate 19 is installed on the transmission frame 2, and the inner side wall of the scraper plate 19 is concavely matched with the outer edge of the measuring guide wheel 3. A connecting screw is provided on the outer side of the scraper plate 19. The scraper plate 19 is fixed to the transmission frame 2 through the connecting screw. The front end of the scraper plate 19 is concavely matched with the outer edge of the measuring guide wheel 3. The front side of the scraper plate 19 can be used to scrape off the loose soil on the surface of the measuring guide wheel 3.

[0036] The inner wall of the rear side of the scraper plate 19 is provided with a mounting groove, and a vibration component is fixed to the wall of the mounting groove. The vibration component includes a connecting beam 20 fixed in the mounting groove and a vibration bow piece 21 symmetrically fixed on both sides of the connecting beam 20, the middle part of the vibration bow piece 21 is fixed on the connecting beam 20, and the front ends of the two vibration bow pieces 21 are connected to a vibration beam 22, and the vibration beam 22 is concave-convex fitted to abut against the outer edge of the measuring guide wheel 3, and the rear side of the vibration bow piece 21 is bent and extends downward. The vibration bow piece 21 is arranged on the outside of both sides of the scraper plate 19 to avoid the rear side of the elastic bow piece from bending and getting stuck on the measuring guide wheel 3. A toggle dial 23 is fixed on both sides of the measuring guide wheel 3, and a limiting groove is provided on the outer wall of the measuring shaft, and a limiting block is provided on the inner wall of the toggle dial 23. The limiting block is clamped in the limiting groove, and a plurality of toggle dials are provided on the inner side of the toggle dial 23. The toggle piece 24 is set to an arc shape, and the outer end of the toggle piece 24 is in contact with the rear side of the vibrating bow piece 21. The direction of the curved protrusion 25 of the toggle piece 24 is consistent with the rotation direction of the measuring guide wheel 3. The toggle piece 24 rotates together with the rotation of the measuring guide wheel 3. During the rotation, the outer end of the toggle piece 24 is in contact with the rear end of the curved vibrating bow piece 21, squeezing the rear end of the vibrating bow piece 21 to deform until it is separated from the vibrating bow piece 21. The vibrating bow piece 21 is reset to generate high-frequency vibration, and the high-frequency vibration of the vibrating piece is transmitted to squeeze the outer edge of the measuring guide wheel 3. The hidden dust in the outer texture of the measuring guide wheel 3 can be made to bounce up and fall by vibration. While the dust scraper plate 19 is used to scrape off the loose soil, the hidden dust is bounced up by vibration, so that the dust can be prevented from entering the contact position between the measuring guide wheel 3 and the transmission guide wheel 10, and further entering the transmission mechanism to affect the transmission accuracy.

[0037] A side wall of the mounting groove facing the vibrating bow piece 21 is provided with a V-shaped protrusion 25, and the V-shaped protrusion 25 gradually increases in width from the side close to the elastic bow piece to the front side until it is flush with the side walls of the scraper plate 19. The dust bounced by the vibration will fall onto the V-shaped protrusion 25 and will be guided out of the two sides of the scraper plate 19 along the inclined surface of the V-shaped protrusion 25, so as to prevent the dust from falling directly and accumulating between the inner scraper plate 19 and the measuring guide wheel 3.

[0038] Workflow:

[0039] The sensor device described in the present invention is installed on the front side of the seeder. By controlling the delay of the seeds falling in the seeder, the horizontal displacement measured in advance by the sensor device can be measured and correlated with the seed planting spacing by controlling the rotation speed of the motor of the seed meter, thereby ensuring the accuracy of the crop spacing and meeting the accuracy of drip irrigation and fertilization in the later stage.

[0040] During use of the present invention, the measuring guide wheel 3 is in contact with the ground under the action of the contact spring 5, and the horizontal height of the control guide wheel 7 can be adjusted by manually adjusting the adjusting bolt. In the initial position, the control guide wheel 7 is adjusted to just contact the middle position of the curved wheel 4, and the transmission guide wheel 10 contacts the measuring guide wheel 3, so that the circumferential speed of the transmission guide wheel 10 is the same as the circumferential speed of the measuring guide wheel 3. The sensor disk 12 and the transmission guide wheel 10 are simultaneously installed on the adjusting shaft 11, so that the rotational angular velocity of the sensor disk 12 and the transmission guide wheel 10 is equal. The vibration frequency of the transmission mechanism can be measured by the displacement sensor 16, and the compensation elimination stroke required for the uneven position of the ground can be determined according to the vibration frequency. The compensation cylinder 15 is controlled to extend and retract, and the arc surface of the contact block 18 contacts the connecting block 17, so that the connecting block 17 slides horizontally to adjust the sensor disk 12 and the speed change disk. 5, changes the rotation radius of the speed disk to compensate for and exclude the invalid stroke of the measuring guide wheel 3, so that the rotation speed of the curved wheel 4 and the actual horizontal displacement are more accurately correlated. During the vibration process, the vibration amplitude of the transmission mechanism will pass through the contact height of the curved wheel 4 and the control guide wheel 7, and change the transmission ratio of the outer wall of the curved wheel 4 and the control guide wheel 7 to compensate for the invalid stroke caused by different amplitudes, so that the horizontal displacement reflected by the stroke ratio of the control guide wheel 7 and the measuring guide wheel 3 is closer to the actual horizontal displacement. In summary, by eliminating the invalid displacement of the measuring guide wheel 3 on the uneven surface of the ground, and controlling the motor speed of the seed meter according to the control parameters, the seeding distance in the seed meter is closer to the set horizontal plant spacing, so as to ensure the accuracy of the sowing plant spacing, and adapt to the drip irrigation spacing of the later drip irrigation belt, so as to avoid the misalignment of the drip irrigation position and the crop, resulting in invalid drip irrigation.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sensor device for precision agriculture of agricultural machinery, comprising a mounting housing, characterized in that: A transmission mechanism is slidingly connected on the mounting shell, and the transmission mechanism includes a transmission frame, a measuring guide wheel, a conduction component and a curved wheel. The transmission frame is slidingly mounted on the mounting shell, and a resistance spring is connected between the mounting shell and the transmission frame. The measuring guide wheel is rotatably mounted on the lower end of the transmission frame, and the measuring guide wheel resists on the ground. The curved wheel is rotatably connected to the transmission frame, and the transmission component is connected between the curved wheel and the measuring guide wheel. A control component is slidingly mounted on the mounting shell, and the control component includes a resistance frame, a control guide wheel, a compensation spring and an angular velocity sensor. The resistance frame is slidingly mounted on the mounting shell, and the control guide wheel resists in the middle of the curved wheel. The compensation spring is connected between the resistance frame and the mounting shell, and the angular velocity sensor is mounted on the control guide wheel, and the angular velocity sensor is connected to the motor of the seed metering device.

2. The sensor device for precision agriculture of agricultural machinery according to claim 1, characterized in that: The transmission component includes a transmission guide wheel, an adjusting shaft, a sensor disk, an adjusting slide rod, a return spring, a compensation cylinder and a displacement sensor, the transmission guide wheel is fixed on the adjusting shaft rod, the adjusting shaft rod is rotatably connected to the transmission frame, the transmission guide wheel and the measuring guide wheel are in conflict with each other, the sensor disk is slidingly sleeved on the adjusting shaft rod, the sensor disk is in conflict with the lower side surface of the curved wheel, the adjusting slide rod is slidingly connected to the adjusting shaft rod, the sensor disk is fixed on the front end of the adjusting slide rod, the rear end of the adjusting slide rod is provided with a connecting block, the connecting block is provided with a conflict slot hole, the compensation cylinder is fixed on the transmission frame, a conflict block is provided on the cylinder arm of the compensation cylinder, the conflict block is penetrated in the conflict slot hole, the conflict block is in conflict with an arc surface on one side of the conflict slot hole, the return spring is connected between the adjusting shaft rod and the connecting block, the displacement sensor is fixed on the transmission frame, and the displacement sensor is connected to the compensation cylinder.

3. The sensor device for precision agriculture of agricultural machinery according to claim 2, characterized in that: The diameter of the sensor disc is greater than the diameter of the transmission guide wheel.

4. The sensor device for precision agriculture of agricultural machinery according to claim 3, characterized in that: The abutment frame is configured as a frame, a control shaft is threadedly connected to the abutment frame, and the control guide wheel is rotatably connected to the lower end of the control shaft.

5. The sensor device for precision agriculture of agricultural machinery according to claim 4, characterized in that: A scraper plate is installed on the transmission frame, and the front end of the scraper plate is concave-convexly matched with the outer edge of the measuring guide wheel. A mounting groove is opened on the inner wall of the rear side of the scraper plate, and a vibration component is fixed to the wall of the mounting groove. The vibration component includes a connecting beam fixed in the mounting groove and vibration bow pieces symmetrically fixed on both sides of the connecting beam. The middle part of the vibration bow piece is fixed on the connecting beam, and the front ends of the two vibration bow pieces are connected to the vibration beam. The vibration beam is concave-convexly matched and abuts against the outer edge of the measuring guide wheel. The rear side of the vibration bow piece is bent and extends downward. Toggle dials are fixed on both sides of the measuring guide wheel, and a plurality of toggle plates are arranged on the inner side of the toggle dial. The outer ends of the toggle plates abut against the rear side of the vibration bow piece.

6. The sensor device for precision agriculture of agricultural machinery according to claim 5, characterized in that: The toggle piece is arranged in an arc shape, and the direction of the curved protrusion of the toggle piece is consistent with the rotation direction of the measuring guide wheel.

7. The sensor device for precision agriculture of agricultural machinery according to claim 6, characterized in that: A side wall of the mounting groove facing the vibrating bow piece is arranged as a V-shaped protrusion, and the V-shaped protrusion gradually increases in width from the side close to the elastic bow piece toward the front side until it is flush with the side walls of the scraper plate.

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