Unmanned intelligent plotting device and method for cultivated land resources

Abstract

The invention relates to the technical field of surveying and mapping, in particular to a farmland resource unmanned intelligent surveying and mapping device and method.The farmland resource unmanned intelligent surveying and mapping device comprises an outer box, an opening is formed in one side of the outer box, and a range finder is arranged in the outer box; the distance measuring instrument comprises a driving shaft rotationally arranged on the outer box in a penetrating mode, a reel located in the outer box is arranged on the driving shaft, a guide wire is wound around the reel, a guide plate is arranged at the lower end of the opening and has magnetism, an arc-shaped groove is formed in the guide plate, an anchor rod is attracted in the arc-shaped groove through magnetism, and the upper end of the anchor rod is connected with the guide wire. The downward-pressing sliding block is forced to move upwards to restore to the initial state through threaded connection, then the motor drives the downward-pressing sliding block to move downwards, the anchor rod is pinned into the soil again, the unmanned vehicle advances again, the guide line is released, and the edge length of the target cultivated land is obtained by adding the multiple repeated accumulated lengths.

Description

Technical Field

[0001] This application relates to the field of surveying and mapping technologies, and particularly to an unmanned intelligent surveying and mapping device and method for cultivated land resources. Background Art

[0002] Cultivated land resources refer to land resources used for agricultural production, especially for growing crops. It is the basis of agricultural production and is directly related to food security, ecological environment, and economic and social development. The total amount of cultivated land is limited. With the progress of urbanization and the development of industrialization, the area of cultivated land is facing pressure to decrease. The state and quality of cultivated land resources will change over time and are affected by natural factors and human activities.

[0003] In order to effectively manage and utilize cultivated land resources, it is necessary to conduct scientific and accurate monitoring of them. Through surveying and mapping, the quantity, quality, and distribution of cultivated land resources can be accurately evaluated, providing a scientific basis for formulating agricultural policies and plans. Surveying and mapping data can be used for precision agriculture management, such as precision fertilization, irrigation, pest control, etc., to improve agricultural production efficiency.

[0004] For example, a surveying instrument for engineering surveying with the application number CN202111320655.3, which relates to the field of engineering surveying and mapping technologies. In this existing technology, there is a load-bearing plate, and a connecting column is fixedly installed at the bottom of the load-bearing plate. This surveying instrument for engineering surveying forms a lever using the connection relationship of the first connecting rod, the second connecting rod, and the four-corner balance balls. Using the lever principle, the inclined support rod can be adjusted to contract under the action of the auxiliary ball bearings. When a single support rod on one side undergoes telescopic changes, the other three support rods will automatically adapt to the changes of the inclined support rod under the lever action of the first connecting rod, the second connecting rod, and the four-corner balance balls to maintain the overall balance of the surveying instrument.

[0005] However, there are still some defects in the above existing technology when it comes to cultivated land surveying and mapping: In the above existing technology, a lever structure is formed by the connection relationship of the first connecting rod, the second connecting rod, and the four-corner balance balls. When a support rod on one side is inclined, the other three support rods will be automatically adjusted under the lever action to adapt to the changes of the inclined support rod and maintain the overall balance of the surveying instrument. When conducting cultivated land surveying and mapping, the edge of the cultivated land is irregular. Due to the irregularity of the cultivated land edge, the device needs to conduct multiple measurements in multiple segments at the cultivated land edge, and each time it moves to a new position, it needs to be readjusted.

[0006] At the same time, the device needs to frequently perform the telescoping of the support rods and the rolling of the four-corner balance balls to ensure that the device can maintain balance under various terrain conditions.

[0007] Based on this, in view of the above statements, there is still room for improvement in the existing technology's method of cultivated land surveying and mapping. Summary of the Invention

[0008] To solve the above technical problems, the present application provides an unmanned intelligent surveying and mapping device and method for cultivated land resources, adopting the following technical solutions: In the first aspect, an unmanned intelligent surveying and mapping device for cultivated land resources An unmanned intelligent surveying and mapping device for cultivated land resources includes an outer box with an opening on one side, and a rangefinder is arranged inside the outer box; The rangefinder includes a driving shaft rotatably penetrating through the outer box. A wire winding wheel is arranged on the driving shaft inside the outer box. A guiding wire is wound around the wire winding wheel. A guide plate is arranged at the lower end of the opening, and the guide plate has magnetism. An arc-shaped groove is formed on the guide plate, and an anchor rod is magnetically adsorbed in the arc-shaped groove. The upper end of the anchor rod is connected to the guiding wire.

[0009] Preferably, the rangefinder further includes a pressing slider slidably arranged inside the outer box and located directly above the anchor rod, and a transmission shaft rotatably arranged inside the outer box and threadedly connected to the pressing slider.

[0010] Preferably, guide rods are slidably and symmetrically penetrated through the guide plate. An arc-shaped plate movably arranged with the anchor rod is commonly arranged at the upper ends of the two guide rods. A return spring is arranged between the arc-shaped plate and the guide plate.

[0011] Preferably, a guiding wheel is rotatably arranged on the pressing slider, and the guiding wire passes through the guiding wheel and is connected to the anchor rod.

[0012] Preferably, sliding grooves are symmetrically formed on the inner walls of both sides of the opening, sliding blocks are slidably arranged in the sliding grooves, and a guiding wheel is rotatably arranged between the two sliding blocks.

[0013] Preferably, a pressing spring is arranged between the side of the sliding block away from the guide plate and the sliding groove.

[0014] Preferably, a counter is arranged inside the outer box; The counter includes an annular groove formed inside the outer box, a sliding groove connected to the annular groove is formed inside the outer box, a trigger block is slidably arranged in the sliding groove through a spring, a trigger inclined surface is arranged at one end of the trigger block facing the annular groove, and a trigger member located in the annular groove is arranged on the wire winding wheel.

[0015] Preferably, the trigger member includes a convex block slidably arranged on one side of the wire winding wheel through a spring, and one end of the convex block is located in the annular groove.

[0016] Preferably, a guiding inclined surface is arranged on one side of the convex block.

[0017] In the second aspect, an unmanned intelligent surveying and mapping method for cultivated land resources, and its usage method includes the following steps: S1: measurement preparation. When surveying and mapping cultivated land, at the starting point, the motor is first used to drive the transmission shaft rotating in the outer box to rotate, forcing the downward pressing slider to move downward. The downward pressing slider causes the anchor rod to be pinned into the soil along the arc groove, and the anchor rod is pinned into the soil at the starting point. S2: Line release measurement. When the unmanned vehicle is moving, the winding wheel rotates to release the guide line. The released length of the guide line corresponds to the travel distance of the unmanned vehicle. The distance between the unmanned vehicle and the anchor rod is measured by the released length of the guide line to obtain the distance of the plowing field. S3: Positioning and recovery. When encountering a turn or the length of the guide wire is insufficient, the unmanned vehicle stops, and the motor drives the drive shaft to drive the winding wheel to reverse, recovering the guide wire, so that the guide wire is wound around the winding wheel, and the guide wire pulls the anchor rod out of the soil. The anchor rod is recovered into the opening along with the guide wire; S4: Cumulative measurement: the transmission shaft forces the downward pressure slider to move upward and return to its initial state through a threaded connection, and then the motor drives the downward pressure slider to move down and re-pin the anchor rod into the soil. The unmanned vehicle moves again and releases the guide line. The accumulated lengths of multiple repetitions are added together to obtain the edge length of the target cultivated land.

[0018] In summary, the present application includes at least one of the following beneficial technical effects: 1. The present invention forces the downward pressure slider to move upward to restore to the initial state through a threaded connection, and then the motor drives the downward pressure slider to move downward, and the anchor rod is re-pinned into the soil. The unmanned vehicle moves again, releases the guide line, and adds up the lengths accumulated over multiple times to obtain the edge length of the target cultivated land. When turning or the guide line is insufficient, the anchor rod is recovered, the direction is adjusted, the position is repositioned, and the surveying is continued. The length of each surveying section is accumulated through the number of turns recorded by the counter, and finally the accumulated lengths over multiple times are added to obtain the edge length of the target cultivated land.

[0019] 2. In the surveying process of the present invention, the length of each surveying section is accumulated through the number of turns recorded by the counter, and finally the accumulated lengths are added up for multiple times to obtain the edge length of the target cultivated land.

[0020] 3. The present invention drives the turntable to align the laser transmitter with the laser receiver. The turntable drives the laser transmitter to rotate and adjust the pitch angle to ensure that the laser beam can be accurately reflected back to the receiver under different terrain conditions. The length of each surveying section is accumulated by the distance measured by the laser rangefinder. Finally, the lengths accumulated for multiple times are added together to obtain the edge length of the target cultivated land. By comparing the measurement data of the laser rangefinder and the guide line, the accuracy of the guide line measurement is verified, thereby improving the overall surveying accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention.

[0022] Figure 2 is a cross-sectional view of the present invention.

[0023] Figure 3 is the present invention Figure 2 partial enlarged view at position A in the present invention.

[0024] Figure 4 is a schematic structural diagram of the rangefinder of the present invention.

[0025] Figure 5 is a cross-sectional view of the counter of the present invention.

[0026] Figure 6 is the present invention Figure 5 partial enlarged view at position B in the present invention.

[0027] Figure 7 is the present invention Figure 5 partial enlarged view at position C in the present invention.

[0028] Figure 8 is a schematic structural diagram of the laser rangefinder of the present invention.

[0029] Figure 9 is a schematic structural diagram of the anchor bolt of the present invention.

[0030] Figure 10 is a cross-sectional view of the anchor bolt of the present invention.

[0031] Figure 11 is a cross-sectional view of the stabilizer of the present invention.

[0032] Explanation of reference numerals: 1, outer box; 2, opening; 3, anchor bolt; 4, rangefinder; 41, drive shaft; 42, winding wheel; 421, guiding wire; 43, guide plate; 431, arc-shaped groove; 44, pressing slider; 45, transmission shaft; 46, guide rod; 47, arc-shaped plate; 48, return spring; 5, guide wheel; 51, sliding groove; 52, sliding block; 53, guiding wheel; 54, pressing spring; 6, counter; 61, annular groove; 62, sliding groove; 63, trigger block; 64, trigger inclined surface; 65, trigger member; 66, convex block; 67, guiding inclined surface; 7, laser rangefinder; 71, cavity; 72, transparent section; 73, turntable; 74, runner; 75, laser emitter; 76, laser receiver; 8, stabilizer; 81, slide bar; 82, pressing inclined surface; 83, pressing pin; 84, adjusting shaft. Detailed implementation manners

[0033] The following is a further detailed description of the present application in conjunction with Figures 1 to 11 the present application.

[0034] An embodiment of the present application discloses an unmanned intelligent mapping device and method for cultivated land resources. The length of each mapping section is accumulated through the distance measured by a laser rangefinder. Finally, the lengths accumulated repeatedly for multiple times are added together to obtain the edge length of the target cultivated land. By comparing the measurement data of the laser rangefinder and the guiding line, the accuracy of the guiding line measurement is verified, and the overall mapping accuracy is improved.

[0035] Embodiment 1: Referring to Figure 1 and Figure 2 As shown, an unmanned intelligent mapping device for cultivated land resources includes an outer box 1, and an opening 2 is provided on one side of the outer box 1.

[0036] When mapping cultivated land, the outer box 1 is carried by an unmanned vehicle and travels along the edge of the target cultivated land. During the travel of the unmanned vehicle, the rangefinder 4 arranged in the outer box 1 measures the contour length of the target cultivated land, so as to calculate the area of the cultivated land, and at the same time records the shape of the cultivated land contour. Using the unmanned vehicle as a mobile platform, the outer box 1 is carried along the edge of the cultivated land. The unmanned vehicle is equipped with a navigation system and a power system and can travel autonomously.

[0037] Referring to Figure 2 , Figure 3 and Figure 4 As shown, specifically, the rangefinder 4 includes a driving shaft 41 rotatably penetrating through the outer box 1. A winding wheel 42 is arranged on the driving shaft 41 inside the outer box 1. A guiding line 421 is wound around the winding wheel 42. A guide plate 43 is provided at the lower end of the opening 2, and the guide plate 43 has magnetism. An arc-shaped groove 431 is provided on the guide plate 43. An anchor rod 3 is magnetically adsorbed in the arc-shaped groove 431. The upper end of the anchor rod 3 is connected to the guiding line 421. A pressing slider 44 is slidably arranged in the outer box 1 above the anchor rod 3.

[0038] When mapping cultivated land, at the starting point, first, the driving shaft 45 rotatably arranged in the outer box 1 is driven to rotate by a motor. The rotating driving shaft 45 will force the pressing slider 44 to move downward through the threaded connection with the pressing slider 44. The pressing slider 44 will abut against the anchor rod 3, causing the anchor rod 3 to be inserted downward into the soil along the arc-shaped groove 431. The anchor rod 3 is inserted into the soil at the starting point, and then the unmanned vehicle starts to travel along the edge of the target cultivated land.

[0039] During the travel of the unmanned vehicle, the driving shaft 41 is driven to rotate by a motor. The driving shaft 41 drives the winding wheel 42 to rotate and release the guiding line 421 wound thereon. The released length of the guiding line 421 corresponds to the travel distance of the unmanned vehicle. By the released length of the guiding line 421, the distance between the unmanned vehicle and the anchor rod 3 is measured to obtain the distance of a certain section of the cultivated land.

[0040] When encountering a turn or when the length of the guiding wire 421 is insufficient, the driverless vehicle stops, and the motor drives the drive shaft 41 to drive the wire reel 42 to reverse, retrieving the guiding wire 421 so that the guiding wire 421 winds around the wire reel 42. The guiding wire 421 will pull the anchor rod 3 out of the soil, and the anchor rod 3 will enter the opening 2 along with the retrieval of the guiding wire 421 and move upward along the arc-shaped groove 431. Since the guide plate 43 has magnetism, it will adsorb the anchor rod 3 in the arc-shaped groove 431 to restore it to a vertical state.

[0041] At the same time, the motor drives the transmission shaft 45 to reverse, forcing the pressing slider 44 to move upward through threaded connection to restore to the initial state, and then the motor drives the pressing slider 44 to move downward, reinserting the anchor rod 3 into the soil. The driverless vehicle moves forward again and releases the guiding wire 421, and the lengths accumulated through multiple repetitions are added together to obtain the edge length of the target cultivated land.

[0042] The guide rod 46 is slidably and symmetrically arranged on the guide plate 43, and an arc-shaped plate 47 that is movably arranged with the anchor rod 3 is jointly provided at the upper ends of the two guide rods 46.

[0043] When the pressing slider 44 moves downward, the pressing slider 44 will first touch the anchor rod 3, and at the same time press the arc-shaped plate 47 and compress the return spring 48 arranged between the arc-shaped plate 47 and the guide plate 43, so that the arc-shaped plate 47 guides the anchor rod 3 to move downward and insert into the soil; conversely, when retrieving the anchor rod 3, the pressing slider 44 moves upward, and the compressed return spring 48 will push the arc-shaped plate 47 to move upward, and the arc-shaped plate 47 guides the anchor rod 3 to restore to the vertical state.

[0044] When it is detected that a turn is needed or the length of the guiding wire 421 is insufficient, the driverless vehicle automatically stops moving forward. The retrieval of the guiding wire 421 pulls the anchor rod 3 out of the soil, and the upward movement of the arc-shaped plate 47 guides the anchor rod 3 to restore to the vertical state. The driverless vehicle will continuously repeat the above process during the surveying process. When encountering a turn or the guiding wire 421 is insufficient, retrieve the anchor rod 3, adjust the direction, reposition and continue the surveying. Through the above method, the contour surveying of the entire target cultivated land can be completed.

[0045] A guiding wheel 5 is rotatably arranged on the pressing slider 44. The guiding wire 421 passes through the guiding wheel 5 and is connected to the anchor rod 3. When releasing and retrieving the guiding wire 421, the guiding wheel 5 will rotate with the release and retrieval of the guiding wire 421. The rotation of the guiding wheel 5 reduces the friction between the guiding wire 421 and the pressing slider 44 and extends the service life of the guiding wire 421.

[0046] Sliding grooves 51 are symmetrically opened on the inner walls of both sides of the opening 2, and sliding blocks 52 are slidably arranged in the sliding grooves 51. A guiding wheel 53 is rotatably arranged between the two sliding blocks 52.

[0047] When the pressing slider 44 presses down the anchor rod 3, the upper end of the anchor rod 3 will move to the lower end of the guide wheel 53. When the unmanned vehicle moves forward, the guiding wire 421 will bypass the lower end of the guide wheel 53, making the guiding wire 421 relatively consistent with the upper end of the anchor rod 3, keeping the guiding wire 421 taut at a certain height, reducing the measurement error and improving the surveying and mapping accuracy. The rotation of the guide wheel 53 makes the release and recovery of the guiding wire 421 smoother and the operation more convenient.

[0048] A pressing spring 54 is arranged between the side of the sliding block 52 away from the guide plate 43 and the sliding groove 51. When recovering the anchor rod 3, when the anchor rod 3 enters the opening 2, the anchor rod 3 is initially in an inclined state. When it enters the arc groove 431, it will first contact the guide wheel 53 to move the sliding block 52 and compress the pressing spring 54, enabling the anchor rod 3 to smoothly enter the arc groove 431.

[0049] Refer to Figure 5 、 Figure 6 and Figure 7 As shown, a counter 6 is also arranged in the outer box 1. The counter 6 will record the number of turns of the wire winding wheel 42. The length of each surveying section is accumulated through the number of turns recorded by the counter 6. Finally, the lengths of multiple repeated accumulations are added together to obtain the edge length of the target cultivated land.

[0050] Specifically, the counter 6 includes an annular groove 61 opened in the outer box 1, a sliding groove 62 connected to the annular groove 61 is opened in the outer box 1, a trigger block 63 is slidably arranged in the sliding groove 62 through a spring, and a trigger inclined surface 64 is arranged at one end of the trigger block 63 facing the annular groove 61.

[0051] When the driving shaft 41 drives the wire winding wheel 42 to rotate, the trigger member 65 arranged on the wire winding wheel 42 will rotate together. The trigger member 65 is located in the annular groove 61. Every time the wire winding wheel 42 rotates one circle, the trigger member 65 will contact the trigger inclined surface 64, causing it to compress the spring and move in the sliding groove 62, and triggering a count through electrical connection.

[0052] When recovering the guiding wire 421, the trigger member 65 cannot push the trigger block 63. After the anchor rod 3 is fixed, the unmanned vehicle continues to move forward in a new direction, and the trigger block 63 starts counting again, repeating the counting times of the accumulated length.

[0053] Among them, the trigger member 65 includes a convex block 66 slidably arranged on one side of the wire winding wheel 42 through a spring. One end of the convex block 66 is located in the annular groove 61. When the driving shaft 41 drives the wire winding wheel 42 to rotate, the convex block 66 will contact the trigger inclined surface 64, causing it to compress the spring and move in the sliding groove 62, and triggering a count through electrical connection.

[0054] When recovering the guiding wire 421, the guiding inclined surface 67 provided on one side of the bump 66 will contact and trigger the trigger block 63, and the compression spring will withdraw from the annular groove 61, thus not triggering the trigger block 63. After the anchor rod 3 is fixed, the unmanned vehicle continues to travel in a new direction. The bump 66 will contact the triggering inclined surface 64 again, causing it to compress the spring and move within the sliding groove 62, and start counting again, realizing the repeated cumulative length counting times.

[0055] During the surveying and mapping process, the unmanned vehicle will continuously repeat the above process. When encountering a turn or insufficient guiding wire 421, the anchor rod 3 is recovered, the direction is adjusted, repositioned, and the surveying and mapping continues. The length of each surveying section is accumulated through the number of turns recorded by the counter 6. Finally, the lengths repeatedly accumulated multiple times are added together to obtain the edge length of the target cultivated land.

[0056] Embodiment 2: Refer to Figure 8 、 Figure 9 、 Figure 10 and Figure 11 As shown in, on the basis of Embodiment 1, a laser rangefinder 7 is provided on the anchor rod 3; it is used to accurately measure the distance between the unmanned vehicle and the anchor rod 3. The laser rangefinder 7 can provide high-precision distance data to further supplement the original distance measurement method of the guiding wire 421.

[0057] Specifically, the laser rangefinder 7 includes a cavity 71 constructed inside the anchor rod 3. A transparent section 72 is provided on the anchor rod 3. A turntable 73 is rotatably arranged inside the transparent section 72. A runner 74 is rotatably arranged on the turntable 73. A laser emitter 75 is provided on the runner 74. A laser receiver 76 is arranged inside the opening 2.

[0058] The laser emitter 75 continuously emits laser beams. The laser beams pass through the transparent section 72 and are directed towards the laser receiver 76. The laser receiver 76 receives the reflected laser beams and converts them into electrical signals. The data processing unit receives the electrical signals from the laser receiver 76, calculates the round-trip time of the laser beams, and converts the round-trip time into distance data according to the propagation speed of the laser beams (the speed of light) to verify the measured length of the guiding wire 421.

[0059] By driving the turntable 73 to align the laser emitter 75 with the laser receiver 76, the runner 74 drives to rotate and adjust the pitch angle of the laser emitter 75 to ensure that the laser beams can be accurately reflected back to the laser receiver 76 under different terrain conditions.

[0060] The length of each surveying section is accumulated through the distances measured by the laser rangefinder 7. Finally, the lengths repeatedly accumulated multiple times are added together to obtain the edge length of the target cultivated land. By comparing the measurement data of the laser rangefinder 7 and the guiding wire 421, the accuracy of the measurement of the guiding wire 421 is verified, and the overall surveying and mapping accuracy is improved.

[0061] A stabilizing member 8 is disposed in the cavity 71 , and the stabilizing member 8 can effectively and stably fix the anchor rod 3 in the soil.

[0062] Specifically, the stabilizing member 8 includes a plurality of slide bars 81 that are slidably penetrated on the anchor rod 3 through springs, the plurality of slide bars 81 are circumferentially distributed on the anchor rod 3, opposite sides of the plurality of slide bars 81 are provided with tightening inclined surfaces 82, a tightening pin 83 corresponding to the tightening inclined surfaces 82 is provided in the cavity 71, an adjusting shaft 84 is rotatably provided in the cavity 71, and the lower end of the adjusting shaft 84 rotates through the tightening pin 83 and is connected to the tightening pin 83.

[0063] By driving the adjustment shaft 84 to rotate, the rotating adjustment shaft 84 will force the locking pin 83 to move downward through the threaded connection with the locking pin 83, and the sliding bar 81 will move outward from the anchor rod 3 through the locking slope 82 and compress the spring, so that the sliding bar 81 is embedded in the soil to provide additional supporting force, thereby enhancing the stability of the anchor rod 3. The presence of the stabilizer 8 can effectively reduce the vibration and deviation of the anchor rod 3 during the movement of the unmanned vehicle, thereby ensuring the accuracy of the measurement.

[0064] When the guide wire 421 is recovered, the adjusting shaft 84 is driven to rotate by the motor, and the threaded connection with the locking pin 83 forces the locking pin 83 to move upward, disengaging from the locking slope 82, thereby releasing the compressed spring and pushing the slide bar 81 back into the anchor rod 3. At the same time, during the recovery process, the slide bar 81 pushes away the soil around the anchor rod 3, reducing soil resistance and making it easier for the anchor rod 3 to be pulled out by the guide wire 421.

[0065] Finally, the present invention also provides an unmanned intelligent surveying and mapping method for cultivated land resources, and the method of using the method comprises the following steps: S1: Measurement preparation. When surveying the cultivated land, at the starting point, firstly, the transmission shaft 45 arranged in the outer box 1 is driven by the motor to rotate. The rotating transmission shaft 45 will be connected with the downward pressing slider 44 through the thread, forcing the downward pressing slider 44 to move downward. The downward pressing slider 44 will resist the anchor rod 3, so that the anchor rod 3 is pinned downward into the soil along the arc groove 431. The anchor rod 3 is pinned into the soil at the starting point.

[0066] S2: Line laying measurement. During the movement of the unmanned vehicle, the driving shaft 41 is driven to rotate by the motor. The driving shaft 41 drives the winding wheel 42 to rotate to release the guide line 421 wound thereon. The released length of the guide line 421 corresponds to the travel distance of the unmanned vehicle. The distance between the unmanned vehicle and the anchor rod 3 is measured by the released length of the guide line 421 to obtain the distance of a certain section of the cultivated land.

[0067] S3: Positioning and recovery. When turning or when the length of the guiding wire 421 is insufficient, the driverless vehicle stops. The motor drives the drive shaft 41 to drive the wire winding wheel 42 to rotate in reverse, recovering the guiding wire 421 so that the guiding wire 421 winds around the wire winding wheel 42. The guiding wire 421 will pull the anchor rod 3 out of the soil, and the anchor rod 3 will enter the opening 2 along with the recovery of the guiding wire 421 and move upward along the arc-shaped groove 431.

[0068] S4: Cumulative measurement. The motor drives the transmission shaft 45 to rotate in reverse, forcing the downward pressing slider 44 to move upward to return to the initial state through threaded connection. Then the motor drives the downward pressing slider 44 to move downward, re-pinning the anchor rod 3 into the soil. The driverless vehicle moves forward again, releases the guiding wire 421, and adds up the lengths accumulated repeatedly to obtain the edge length of the target cultivated land.

[0069] S5: Counting measurement. When the drive shaft 41 drives the wire winding wheel 42 to rotate, the convex block 66 will touch and trigger the inclined plane 64, causing it to compress the spring and move within the sliding groove 62, triggering a count through electrical connection. When recovering the guiding wire 421, the guiding inclined plane 67 provided on one side of the convex block 66 will touch the trigger block 63, and the compression spring will withdraw from the annular groove 61, thus not triggering the trigger block 63. After the anchor rod 3 is fixed, the driverless vehicle continues to move forward in a new direction, and the convex block 66 will touch and trigger the inclined plane 64 again, causing it to compress the spring and move within the sliding groove 62, restarting the count to achieve the counting times of the repeatedly accumulated length.

[0070] S6: Counting measurement. By driving the turntable 73 to align the laser emitter 75 with the laser receiver 76, the rotating wheel 74 drives to adjust the pitch angle of the laser emitter 75 to ensure that the laser beam can be accurately reflected back to the receiver under different terrain conditions. The length of each survey segment is accumulated through the distance measured by the laser rangefinder 7. Finally, the lengths accumulated repeatedly are added up to obtain the edge length of the target cultivated land. By comparing the measurement data of the laser rangefinder 7 and the guiding wire 421, the accuracy of the measurement by the guiding wire 421 is verified, improving the overall surveying and mapping accuracy.

[0071] The embodiments of this specific implementation manner are all preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. An unmanned intelligent mapping device for cultivated land resources, comprising an outer box (1), characterized in that: One side of the outer box (1) is provided with an opening (2), and a rangefinder (4) is arranged inside the outer box (1). The rangefinder (4) includes a driving shaft (41) rotatably penetrating through the outer box (1). A wire winding wheel (42) located inside the outer box (1) is arranged on the driving shaft (41). A guiding wire (421) is wound around the wire winding wheel (42). A guide plate (43) is arranged at the lower end of the opening (2), and the guide plate (43) has magnetism. An arc-shaped groove (431) is formed in the guide plate (43), and an anchor rod (3) is magnetically adsorbed in the arc-shaped groove (431). The upper end of the anchor rod (3) is connected to the guiding wire (421).

2. The unmanned intelligent mapping device for cultivated land resources according to claim 1, characterized in that: The rangefinder (4) further includes a downward pressing slider (44) slidably arranged inside the outer box (1) and located directly above the anchor rod (3). A transmission shaft (45) rotatably arranged inside the outer box (1) and threadedly connected to the downward pressing slider (44) is provided inside the outer box (1).

3. The unmanned intelligent mapping device for cultivated land resources according to claim 1, characterized in that: Guide rods (46) are slidably and symmetrically penetrated through the guide plate (43). An arc-shaped plate (47) movably arranged with the anchor rod (3) is jointly arranged at the upper ends of the two guide rods (46). A return spring (48) is arranged between the arc-shaped plate (47) and the guide plate (43).

4. The unmanned intelligent mapping device for cultivated land resources according to claim 2, characterized in that: A guiding wheel (5) is rotatably arranged on the downward pressing slider (44). The guiding wire (421) passes through the guiding wheel (5) and is connected to the anchor rod (3).

5. An unmanned intelligent mapping device for cultivated land resources according to claim 1, characterized in that: Sliding grooves (51) are symmetrically formed in the inner walls on both sides of the opening (2). Sliding blocks (52) are slidably arranged in the sliding grooves (51). A guiding wheel (53) is rotatably arranged between the two sliding blocks (52).

6. The unmanned intelligent mapping device for cultivated land resources according to claim 5, characterized in that: A pressing spring (54) is arranged between the side of the sliding block (52) away from the guide plate (43) and the sliding groove (51).

7. An unmanned intelligent mapping device for cultivated land resources according to claim 1, characterized in that: A counter (6) is arranged inside the outer box (1). The counter (6) includes an annular groove (61) formed inside the outer box (1). A sliding groove (62) connected to the annular groove (61) is formed inside the outer box (1). A trigger block (63) is slidably arranged in the sliding groove (62) through a spring. A trigger inclined surface (64) is arranged at one end of the trigger block (63) facing the annular groove (61). A trigger member (65) located in the annular groove (61) is arranged on the wire winding wheel (42).

8. An unmanned intelligent mapping device for cultivated land resources according to claim 7, characterized in that: The trigger member (65) includes a convex block (66) slidably arranged on one side of the wire winding wheel (42) through a spring. One end of the convex block (66) is located in the annular groove (61).

9. The unmanned intelligent mapping device for cultivated land resources according to claim 8, characterized in that: A guiding inclined surface (67) is arranged on one side of the convex block (66).

10. A method for unmanned intelligent mapping of cultivated land resources, which uses an unmanned intelligent mapping device for cultivated land resources as described in any one of claims 1-9, characterized in that, Its usage method includes the following steps: S1: Measurement preparation. When conducting surveying and mapping of cultivated land, at the starting point, first drive the transmission shaft (45) rotatably arranged inside the outer box (1) to rotate through a motor, forcing the downward pressing slider (44) to move downward. The downward pressing slider (44) causes the anchor rod (3) to be inserted downward along the arc-shaped groove (431) into the soil, and the anchor rod (3) is inserted into the soil at the starting point. S2: Paying out the wire for measurement. During the movement of the unmanned vehicle, the wire winding wheel (42) rotates to release the guiding wire (421). The released length of the guiding wire (421) corresponds to the traveling distance of the unmanned vehicle. By the released length of the guiding wire (421), the distance between the unmanned vehicle and the anchor rod (3) is measured to obtain the distance of a section of the cultivated land. S3: Positioning and recovery. When encountering a turn or when the length of the guiding wire (421) is insufficient, the unmanned vehicle stops, and the motor drives the drive shaft (41) to drive the wire reel (42) to reverse, recovering the guiding wire (421), causing the guiding wire (421) to wind around the wire reel (42). The guiding wire (421) pulls the anchor rod (3) out of the soil, and the anchor rod (3) enters the opening (2) along with the recovery of the guiding wire (421). S4: Cumulative measurement. The drive shaft (45) forces the downward pressing slider (44) to move upward through threaded connection to restore to the initial state. Then, the motor drives the downward pressing slider (44) to move downward, re-pinning the anchor rod (3) into the soil. The unmanned vehicle moves forward again, releasing the guiding wire (421), and adding the lengths accumulated through multiple repetitions to obtain the edge length of the target cultivated land.

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