An unmanned intelligent surveying and mapping device and method for farmland resources

Abstract

The application relates to the technical field of surveying and mapping, in particular to a farmland resource unmanned intelligent surveying and mapping device and method, which 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 range finder comprises a driving shaft rotatably arranged on the outer box, a winding wheel is arranged on the driving shaft and located in the outer box, a guide line is wound on the winding wheel, a guide plate is arranged at the lower end of the opening, the guide plate has magnetism, an arc-shaped groove is formed in the guide plate, an anchor rod is magnetically adsorbed in the arc-shaped groove, and the upper end of the anchor rod is connected with the guide line. The anchor rod is forced to move downward by thread connection, the sliding block is forced to move upward to restore to the initial state, then the motor drives the sliding block to move downward, the anchor rod is reinserted into the soil, the unmanned vehicle advances again, the guide line is released, the length accumulated by multiple repetitions is added to obtain the edge length of the target farmland.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of surveying technology, in particular to an unmanned intelligent surveying and mapping device and method for arable land resources. BACKGROUND

[0002] Arable land resources refer to land resources used for agricultural production, especially for planting 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 arable land is limited, and with the development of urbanization and industrialization, the arable land area is under pressure to decrease, and the state and quality of arable land resources will change over time and be affected by natural factors and human activities.

[0003] In order to effectively manage and utilize arable land resources, it is necessary to conduct scientific and accurate monitoring, and through surveying and mapping, the quantity, quality and distribution of arable land resources can be accurately evaluated to provide scientific basis for formulating agricultural policies and planning. 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, the application number CN202111320655.3 relates to an engineering surveying and mapping instrument, which belongs to the field of engineering surveying and mapping. The existing technology includes a bearing plate, and the bottom of the bearing plate is fixedly installed with a connecting column. The engineering surveying and mapping instrument utilizes the connecting relationship of the first connecting rod, the second connecting rod and the four-corner balance ball to form a lever, and utilizes the principle of lever to make the support rod in the inclined state shrink and adjust under the action of the auxiliary ball. When the single support rod on one side changes in length, the other three support rods will automatically adapt to the change of the inclined support rod and maintain the balance of the whole instrument under the action of the lever formed by the first connecting rod, the second connecting rod and the four-corner balance ball.

[0005] However, the above-mentioned existing technology still has some defects when it comes to arable land surveying and mapping:

[0006] The above-mentioned existing technology forms a lever structure through the connecting relationship of the first connecting rod, the second connecting rod and the four-corner balance ball. When a support rod on one side is inclined, the other three support rods will automatically adjust under the action of the lever to adapt to the change of the inclined support rod and maintain the overall balance of the surveying and mapping instrument. When it comes to arable land surveying and mapping, the edge of the arable land is irregular. Due to the irregularity of the edge of the arable land, the equipment needs to be moved to a new position for re-adjustment every time it is measured in multiple segments and multiple times.

[0007] At the same time, the equipment needs to frequently extend and retract the support rods and roll the four-corner balance ball to ensure that the equipment can maintain balance under various terrain conditions.

[0008] Therefore, based on the above-mentioned points, the existing technology for arable land surveying and mapping still has room for improvement. SUMMARY

[0009] In order to solve the above technical problems, the application provides a kind of cultivated land resource unmanned intelligent mapping device and method, adopt the following technical solutions:

[0010] First, a kind of cultivated land resource unmanned intelligent mapping device,

[0011] A kind of cultivated land resource unmanned intelligent mapping device, including outer box, opening is set in one side of outer box, distance measuring instrument is arranged in outer box;

[0012] Distance measuring instrument includes the drive shaft that is rotatably arranged on outer box, drive shaft is provided with the winding wheel in outer box, winding wheel is wound with guide line, guide plate is arranged in the lower end of opening, and guide plate has magnetism, arc-shaped slot is set in guide plate, anchor rod is adsorbed in arc-shaped slot by magnetism, and the upper end of anchor rod is connected with guide line.

[0013] Preferably, distance measuring instrument further includes the lower pressing sliding block that is slidably arranged in outer box and located directly above anchor rod, transmission shaft is rotatably arranged in outer box and is screw connected with lower pressing sliding block.

[0014] Preferably, guide plate is slidably and symmetrically provided with guide rod, the upper end of the two guide rods is commonly provided with arc-shaped plate movably arranged with anchor rod, and reset spring is arranged between arc-shaped plate and guide plate.

[0015] Preferably, guide wheel is rotatably arranged on lower pressing sliding block, and guide line is connected with anchor rod after passing through guide wheel.

[0016] Preferably, the inner wall of opening is symmetrically provided with sliding slot, sliding block is slidably arranged in sliding slot, and guide wheel is rotatably arranged between the two sliding blocks.

[0017] Preferably, between the side of sliding block away from guide plate and sliding slot, abutting spring is arranged.

[0018] Preferably, counter is arranged in outer box.

[0019] Counter includes annular slot set in outer box, sliding slot connected with annular slot is set in outer box, trigger block is slidably arranged in sliding slot by spring, trigger slope is arranged at the end of trigger block towards annular slot, and trigger piece is arranged on winding wheel and located in annular slot.

[0020] Preferably, trigger piece includes the protrusion that is slidably arranged on one side of winding wheel by spring, and one end of protrusion is located in annular slot.

[0021] Preferably, guide slope is arranged on one side of protrusion.

[0022] Second, a kind of cultivated land resource unmanned intelligent mapping method, its use method includes the following steps:

[0023] S1: Measurement preparation, when mapping the cultivated land, at the starting position, first drive the transmission shaft rotatingly arranged in the outer box to rotate by the motor, force the downward sliding block to move downward, the downward sliding block makes the anchor rod into the soil along the arc-shaped slot, the anchor rod is inserted into the soil at the starting point;

[0024] S2: Wire laying measurement, during the travel of the unmanned vehicle, the wire winding wheel rotates to release the guide wire, the release length of the guide wire corresponds to the travel distance of the unmanned vehicle, the distance between the unmanned vehicle and the anchor rod is measured through the release length of the guide wire to obtain the distance of a section of the cultivated land;

[0025] S3: Positioning recovery, when encountering a bend or the length of the guide wire is insufficient, the unmanned vehicle stops, the motor drives the drive shaft to drive the wire winding wheel to reverse, the guide wire is recovered to make the guide wire wind on the wire winding wheel, the anchor rod is pulled out of the soil by the guide wire, and the anchor rod is recovered into the opening along with the guide wire;

[0026] S4: Cumulative measurement, the transmission shaft forces the downward sliding block to move upward to restore to the initial state through threaded connection, then the motor drives the downward sliding block to move downward, the anchor rod is reinserted into the soil, the unmanned vehicle travels again, the guide wire is released, and the lengths repeatedly accumulated are added to obtain the edge length of the target cultivated land.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. The present application forces the downward sliding block to move upward to restore to the initial state through threaded connection, then the motor drives the downward sliding block to move downward, the anchor rod is reinserted into the soil, the unmanned vehicle travels again, the guide wire is released, and the lengths repeatedly accumulated are added to obtain the edge length of the target cultivated land, when the bend or the guide wire is insufficient, the anchor rod is recovered, the direction is adjusted, the position is repositioned, and the mapping is continued, the length of each mapping section is accumulated by the number of turns recorded by the counter, and finally the lengths repeatedly accumulated are added to obtain the edge length of the target cultivated land.

[0029] 2. In the mapping process, the length of each mapping section is accumulated by the number of turns recorded by the counter, and finally the lengths repeatedly accumulated are added to obtain the edge length of the target cultivated land.

[0030] 3. The present application drives the rotating disc to align the laser emitter with the laser receiver, the rotating wheel drives the rotating adjustment to adjust the pitch angle of the laser emitter, ensures that the laser beam can be accurately reflected back to the receiver under different terrain conditions, the length of each mapping section is accumulated by the distance measured by the laser range finder, and finally the lengths repeatedly accumulated are added to obtain the edge length of the target cultivated land, the accuracy of the guide wire measurement is verified by comparing the measurement data of the laser range finder and the guide wire, and the overall mapping precision is improved. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is a structural schematic diagram of the present application.

[0032] Figure 2 is a sectional view of the present application.

[0033] Figure 3 is a partial enlarged view at A in the present application Figure 2

[0034] Figure 4 is a structural schematic diagram of the range finder of the present application.

[0035] Figure 5 is a sectional view of the counter of the present application.

[0036] Figure 6 is a partial enlarged view at B in the present application Figure 5

[0037] Figure 7 is a partial enlarged view at C in the present application Figure 5

[0038] Figure 8 is a structural schematic diagram of the laser range finder of the present application.

[0039] Figure 9 is a structural schematic diagram of the anchor rod of the present application.

[0040] Figure 10 is a sectional view of the anchor rod of the present application.

[0041] Figure 11 is a sectional view of the stabilizing member of the present application.

[0042] BRIEF DESCRIPTION OF DRAWINGS1. outer box; 2. opening; 3. anchor rod; 4. range finder; 41. driving shaft; 42. winding wheel; 421. guide wire; 43. guide plate; 431. arc-shaped slot; 44. pressing slide; 45. transmission shaft; 46. guide rod; 47. arc-shaped plate; 48. return spring; 5. guide wheel; 51. sliding slot; 52. sliding block; 53. guide wheel; 54. abutting spring; 6. counter; 61. annular slot; 62. sliding slot; 63. trigger block; 64. trigger slope; 65. trigger member; 66. protrusion; 67. guide slope; 7. laser range finder; 71. cavity; 72. transparent section; 73. rotating disc; 74. rotating wheel; 75. laser emitter; 76. laser receiver; 8. stabilizing member; 81. slide bar; 82. abutting slope; 83. abutting pin; 84. adjusting shaft. DETAILED DESCRIPTION

[0043] The present application will be further described in detail below. Figures 1 to 11 ​​​

[0044] The embodiment of the application discloses a farmland resource unmanned intelligent mapping device and method, the length of each mapping section is accumulated through the distance measured by a laser range finder, the length of multiple repeated accumulations is added finally, the edge length of the target farmland is obtained, the accuracy of the guide line measurement is verified through comparison of the measurement data of the laser range finder and the guide line, and the overall mapping precision is improved.

[0045] Embodiment one:

[0046] Referring to Figure 1 and Figure 2 , a farmland resource unmanned intelligent mapping device comprises an outer box 1, and an opening 2 is formed in one side of the outer box 1.

[0047] When the farmland is mapped, the outer box 1 is carried by the unmanned vehicle, and the unmanned vehicle travels along the edge of the target farmland. In the traveling process of the unmanned vehicle, the range finder 4 arranged in the outer box 1 measures the contour length of the target farmland, so as to calculate the area of the farmland and record the contour shape of the farmland. The unmanned vehicle is used as a mobile platform, and the outer box 1 travels along the edge of the farmland. The unmanned vehicle is provided with a navigation system and a power system and can travel autonomously.

[0048] Referring to Figure 2 , Figure 3 and Figure 4 , specifically, the range finder 4 comprises a driving shaft 41 rotatably arranged on the outer box 1, a winding wheel 42 arranged in the outer box 1 and located on the driving shaft 41, a guide line 421 wound on the winding wheel 42, a guide plate 43 provided at the lower end of the opening 2 and having magnetism, an arc-shaped groove 431 formed in the guide plate 43 and magnetically adsorbing an anchor rod 3, the anchor rod 3 being connected with the guide line 421 at the upper end, and a lower pressing sliding block 44 slidingly arranged in the outer box 1 and located directly above the anchor rod 3.

[0049] When the farmland is mapped, at the starting point, the transmission shaft 45 rotatably arranged in the outer box 1 is first driven by the motor to rotate. The rotating transmission shaft 45 moves the lower pressing sliding block 44 downward through the threaded connection with the lower pressing sliding block 44. The lower pressing sliding block 44 abuts against the anchor rod 3, so that the anchor rod 3 is inserted 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 farmland.

[0050] In the traveling process of the unmanned vehicle, the driving shaft 41 is driven by the motor to rotate, the driving shaft 41 drives the winding wheel 42 to rotate and release the guide line 421 wound thereon. The release length of the guide line 421 corresponds to the traveling distance of the unmanned vehicle. The distance of a certain section of the farmland is obtained by measuring the distance between the unmanned vehicle and the anchor rod 3 through the release length of the guide line 421.

[0051] When the unmanned vehicle encounters a turn or the length of the guide wire 421 is insufficient, the unmanned vehicle stops, the motor drives the driving shaft 41 to drive the winding wheel 42 to reverse, the guide wire 421 is recovered, the guide wire 421 is wound on the winding wheel 42, the guide wire 421 will pull the anchor rod 3 out of the soil, the anchor rod 3 will be recovered into the opening 2 along with the guide wire 421 and move upward along the arc-shaped groove 431, and the anchor rod 3 will be adsorbed in the arc-shaped groove 431 due to the magnetism of the guide plate 43 to restore the vertical state.

[0052] At the same time, the motor drives the transmission shaft 45 to reverse, the lower pressing sliding block 44 is forced to move upward to the initial state through threaded connection, and then the motor drives the lower pressing sliding block 44 to move downward, the anchor rod 3 is re-pinned into the soil, the unmanned vehicle advances again and releases the guide wire 421, and the length accumulated by repeated repetition is added to obtain the edge length of the target farmland.

[0053] The guide plate 43 is symmetrically provided with guide rods 46 which slide on the guide plate 43, and the upper ends of the two guide rods 46 are jointly provided with an arc-shaped plate 47 which is movably arranged with the anchor rod 3.

[0054] When the lower pressing sliding block 44 moves downward, the lower pressing sliding block 44 will first abut against the anchor rod 3, the arc-shaped plate 47 is pressed and the reset spring 48 arranged between the arc-shaped plate 47 and the guide plate 43 is compressed, so that the arc-shaped plate 47 guides the anchor rod 3 to move downward and be pinned into the soil; conversely, when the anchor rod 3 is recovered, the lower pressing sliding block 44 moves upward, the compressed reset spring 48 pushes 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.

[0055] When it is detected that a turn is needed or the length of the guide wire 421 is insufficient, the unmanned vehicle automatically stops advancing, the guide wire 421 is recovered to pull the anchor rod 3 out of the soil, the upward movement of the arc-shaped plate 47 guides the anchor rod 3 to restore to the vertical state, and the unmanned vehicle will repeatedly perform the above process during the surveying process. When a turn is encountered or the guide wire 421 is insufficient, the anchor rod 3 is recovered, the direction is adjusted, the position is repositioned and the surveying is continued. Through the above mode, the contour surveying of the entire target farmland can be completed.

[0056] The guide wheel 5 is rotatably arranged on the lower pressing sliding block 44, the guide wire 421 passes through the guide wheel 5 and is connected with the anchor rod 3, and the guide wheel 5 rotates with the release and recovery of the guide wire 421. The rotation of the guide wheel 5 reduces the friction between the guide wire 421 and the lower pressing sliding block 44, and prolongs the service life of the guide wire 421.

[0057] The inner walls on both sides of the opening 2 are symmetrically provided with sliding grooves 51, the sliding grooves 51 are slidably provided with sliding blocks 52, and the guide wheels 53 are rotatably arranged between the two sliding blocks 52.

[0058] When the sliding block 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, and when the unmanned vehicle travels, the guide wire 421 will pass around the lower end of the guide wheel 53, so that the guide wire 421 is consistent with the upper end of the anchor rod 3, and the guide wire 421 is stretched relative to a height, which reduces the measurement error and improves the surveying accuracy. The rotation of the guide wheel 53 makes the release and recovery of the guide wire 421 more smooth and the operation more convenient.

[0059] The sliding block 52 away from the guide plate 43 is provided with a pressing spring 54 between the sliding groove 51, and when the anchor rod 3 is recovered, the anchor rod 3 enters the opening 2, and the anchor rod 3 is initially in an inclined state, and when it enters the arc-shaped groove 431, it will first touch the guide wheel 53 to move the sliding block 52 and compress the pressing spring 54, so that the anchor rod 3 smoothly enters the arc-shaped groove 431.

[0060] Referring to Figure 5 , Figure 6 and Figure 7 , the counter 6 is further arranged in the outer box 1, which records the number of turns of the winding wheel 42, and the length of each surveying section is accumulated by the number of turns recorded by the counter 6, and finally the length of the target farmland edge is obtained by adding the length of the repeated accumulation.

[0061] Specifically, the counter 6 includes a ring-shaped groove 61 formed in the outer box 1, and a sliding groove 62 connected with the ring-shaped groove 61 is formed in the outer box 1, a trigger block 63 is slidably arranged in the sliding groove 62 by a spring, and a trigger inclined surface 64 is arranged at one end of the trigger block 63 facing the ring-shaped groove 61.

[0062] When the driving shaft 41 drives the winding wheel 42 to rotate, the trigger piece 65 arranged on the winding wheel 42 will rotate together, the trigger piece 65 is located in the ring-shaped groove 61, and when the winding wheel 42 rotates one turn, the trigger piece 65 will touch the trigger inclined surface 64, so that the spring is compressed and moves in the sliding groove 62, and the trigger is triggered once through electrical connection.

[0063] When the guide wire 421 is recovered, the trigger piece 65 cannot push the trigger block 63, and after the anchor rod 3 is fixed, the unmanned vehicle continues to travel in a new direction, and the trigger block 63 starts to count again, and the length of the repeated accumulation is counted.

[0064] Among them, the trigger piece 65 includes a protrusion 66 arranged on one side of the winding wheel 42 by a spring, one end of the protrusion 66 is located in the ring-shaped groove 61, when the driving shaft 41 drives the winding wheel 42 to rotate, the protrusion 66 will touch the trigger inclined surface 64, so that the spring is compressed and moves in the sliding groove 62, and the trigger is triggered once through electrical connection.

[0065] When the guide line 421 is retrieved, the guide slope 67 on one side of the protrusion 66 will abut against the trigger block 63, and the compressed spring will disengage from the annular groove 61, thus not triggering the trigger block 63. After the anchor 3 is fixed, the unmanned vehicle continues to travel in a new direction, and the protrusion 66 will abut against the trigger slope 64 again, causing it to compress the spring and move in the sliding groove 62, restarting the counting and realizing the repeated accumulation of length counting times.

[0066] During the surveying process, the unmanned vehicle will continuously repeat the above process. When it encounters a turn or the guide line 421 is insufficient, it will retrieve the anchor rod 3, adjust the direction, reposition itself and continue surveying. The length of each surveyed segment is accumulated by the number of circles recorded by the counter 6. Finally, the lengths accumulated from multiple repetitions are added together to obtain the edge length of the target farmland.

[0067] Example 2:

[0068] Reference Figure 8 , Figure 9 , Figure 10 and Figure 11 As shown, based on Embodiment 1, a laser rangefinder 7 is installed 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, further supplementing the original guide line 421 distance measurement method.

[0069] Specifically, the laser rangefinder 7 includes a cavity 71 constructed inside the anchor rod 3, a transparent section 72 provided on the anchor rod 3, a turntable 73 rotatably provided inside the transparent section 72, a rotating wheel 74 rotatably provided on the turntable 73, a laser emitter 75 provided on the rotating wheel 74, and a laser receiver 76 provided inside the opening 2.

[0070] The laser emitter 75 continuously emits a laser beam, which passes through the transparent section 72 and is directed towards the laser receiver 76. The laser receiver 76 receives the reflected laser beam and converts it into an electrical signal. The data processing unit receives the electrical signal from the laser receiver 76, calculates the round-trip time of the laser beam, and converts the round-trip time into distance data based on the propagation speed of the laser beam (speed of light) to verify the measured length of the guide line 421.

[0071] By driving the turntable 73 to align the laser emitter 75 with the laser receiver 76, the rotating wheel 74 drives the adjustment of the pitch angle of the laser emitter 75, ensuring that the laser beam can be accurately reflected back to the laser receiver 76 under different terrain conditions.

[0072] The length of each survey segment is accumulated by the distance measured by the laser rangefinder 7. Finally, the lengths accumulated from multiple repetitions are added together to obtain the edge length of the target farmland. By comparing the measurement data of the laser rangefinder 7 and the guide line 421, the accuracy of the guide line 421 measurement is verified, and the overall survey accuracy is improved.

[0073] The cavity 71 is further provided with a stabilizing piece 8, which can effectively stabilize and fix the anchor rod 3 in the soil.

[0074] Specifically, the stabilizing piece 8 includes a plurality of sliding bars 81 slidably arranged on the anchor rod 3, the plurality of sliding bars 81 are distributed in a circumferential direction on the anchor rod 3, opposite sides of the plurality of sliding bars 81 are provided with abutting inclined surfaces 82, the cavity 71 is provided with abutting pins 83 corresponding to the abutting inclined surfaces 82, and the cavity 71 is rotatably provided with an adjusting shaft 84, a lower end of the adjusting shaft 84 rotatably penetrates the abutting pins 83 and is connected with the abutting pins 83.

[0075] By driving the adjusting shaft 84 to rotate, the rotating adjusting shaft 84 will force the abutting pins 83 to move downward through the threaded connection with the abutting pins 83, and the sliding bars 81 will move outward from the anchor rod 3 through the abutting inclined surfaces 82 and compress the springs, so that the sliding bars 81 provide additional support force in the soil and enhance the stability of the anchor rod 3. The existence of the stabilizing piece 8 can effectively reduce the vibration and deviation of the anchor rod 3 during the travel of the unmanned vehicle, and ensure the accuracy of the measurement.

[0076] When the guide wire 421 is recovered, the adjusting shaft 84 is driven to rotate by the motor, the abutting pins 83 are forced to move upward through the threaded connection with the abutting pins 83, and the abutting pins 83 are separated from the abutting inclined surfaces 82, so that the compressed springs are released and push the sliding bars 81 to retract into the anchor rod 3. At the same time, the sliding bars 81 push the soil around the anchor rod 3 away during the recovery process, reduce the soil resistance, and make the anchor rod 3 more easily pulled out by the guide wire 421.

[0077] Finally, the present application also provides an unmanned intelligent surveying and mapping method for farmland resources, and the use method includes the following steps:

[0078] S1: measurement preparation, when the farmland is measured and mapped, at the starting point, the transmission shaft 45 rotatably arranged in the outer box 1 is first driven to rotate by the motor, the rotating transmission shaft 45 will force the downward sliding block 44 to move downward through the threaded connection with the downward sliding block 44, the downward sliding block 44 will abut against the anchor rod 3, the anchor rod 3 will be inserted into the soil along the arc-shaped slot 431, and the anchor rod 3 is inserted into the soil at the starting point.

[0079] S2: wire laying measurement, during the travel 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 wire 421 wound thereon, the release length of the guide wire 421 corresponds to the travel distance of the unmanned vehicle, and the distance between the unmanned vehicle and the anchor rod 3 is measured through the release length of the guide wire 421 to obtain the distance of a certain section of the farmland.

[0080] S3: positioning recovery, when encountering a bend or the length of the guide wire 421 is insufficient, the unmanned vehicle stops, the motor drives the drive shaft 41 to drive the winding wheel 42 to reverse, and the guide wire 421 is recovered to be wound on the winding wheel 42, the guide wire 421 will pull the anchor rod 3 out of the soil, and the anchor rod 3 will be recovered into the opening 2 along with the guide wire 421 and move upward along the arc-shaped groove 431.

[0081] S4: cumulative measurement, the motor drives the transmission shaft 45 to reverse, forces the downward sliding block 44 to move upward to restore to the initial state through threaded connection, and then the motor drives the downward sliding block 44 to move downward, reinserts the anchor rod 3 into the soil, and the unmanned vehicle advances again to release the guide wire 421, and the length of multiple repeated accumulations is added to obtain the edge length of the target farmland.

[0082] S5: counting measurement, when the drive shaft 41 drives the winding wheel 42 to rotate, the convex block 66 will abut against the trigger slope 64 to compress the spring and move in the sliding groove 62, and the trigger is triggered once through electrical connection, when the guide wire 421 is recovered, the guide slope 67 arranged on one side of the convex block 66 will abut against the trigger block 63 to compress the spring and exit from the annular groove 61, so that the trigger block 63 is not triggered, after the anchor rod 3 is fixed, the unmanned vehicle continues to advance in the new direction, the convex block 66 will abut against the trigger slope 64 again to compress the spring and move in the sliding groove 62, and the counting is restarted to realize repeated counting of the length.

[0083] S6: counting measurement, the laser emitter 75 is aligned with the laser receiver 76 by driving the rotating disc 73, the rotating wheel 74 drives the rotating adjustment to pitch angle of the laser emitter 75, and 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 range finder 7, the length of multiple repeated accumulations is added to obtain the edge length of the target farmland, the accuracy of the measurement of the guide wire 421 is verified by comparing the measurement data of the laser range finder 7 and the guide wire 421, and the overall surveying precision is improved.

[0084] The embodiments of the specific implementation are the preferred embodiments of the application, and do not limit the protection scope of the application, so that: any equivalent changes made according to the structure, shape, principle of the application should be covered within the protection scope of the application.

Claims

1. An unmanned intelligent surveying and mapping device for arable land resources, comprising an outer casing (1), characterized in that: An opening (2) is provided on one side of the outer box (1), and a rangefinder (4) is installed inside the outer box (1). The rangefinder (4) includes a drive shaft (41) that rotates through the outer casing (1). A winding wheel (42) located inside the outer casing (1) is provided on the drive shaft (41). A guide line (421) is wound on the winding wheel (42). A guide plate (43) is provided at the lower end of the opening (2). The guide plate (43) is magnetic. An arc groove (431) is provided on the guide plate (43). An anchor rod (3) is magnetically attracted in the arc groove (431). The upper end of the anchor rod (3) is connected to the guide line (421). The rangefinder (4) also includes a sliding block (44) located directly above the anchor rod (3) inside the outer box (1), and a drive shaft (45) that is threadedly connected to the sliding block (44) is rotatably installed inside the outer box (1). Guide rods (46) slide and symmetrically pass through the guide plate (43). The upper ends of the two guide rods (46) are provided with an arc plate (47) that is movably connected with the anchor rod (3). A return spring (48) is provided between the arc plate (47) and the guide plate (43). A guide wheel (5) is rotatably mounted on the lower slider (44), and a guide line (421) passes through the guide wheel (5) and connects to the anchor rod (3); The inner walls on both sides of the opening (2) are symmetrically provided with sliding grooves (51), and sliding blocks (52) are slidably arranged in the sliding grooves (51). A guide wheel (53) is rotatably arranged between the two sliding blocks (52). A retaining spring (54) is provided between the side of the sliding block (52) away from the guide plate (43) and the sliding groove (51). A laser rangefinder (7) is installed on the anchor bolt (3); 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 provided inside the transparent section (72), a rotating wheel (74) is rotatably provided on the turntable (73), a laser emitter (75) is provided on the rotating wheel (74), and a laser receiver (76) is provided inside the opening (2).

2. The unmanned intelligent surveying and mapping device for arable land resources according to claim 1, characterized in that: A counter (6) is installed inside the outer box (1); The counter (6) includes an annular groove (61) opened inside the outer casing (1), a sliding groove (62) connected to the annular groove (61) is opened inside the outer casing (1), a trigger block (63) is slidably arranged in the sliding groove (62) by a spring, a trigger inclined surface (64) is provided at one end of the trigger block (63) facing the annular groove (61), and a trigger element (65) located in the annular groove (61) is provided on the winding wheel (42).

3. The unmanned intelligent surveying and mapping device for arable land resources according to claim 1, characterized in that: The trigger (65) includes a protrusion (66) that is slidably disposed on one side of the winding wheel (42) by a spring, with one end of the protrusion (66) located in the annular groove (61).

4. The unmanned intelligent surveying and mapping device for arable land resources according to claim 3, characterized in that: A guide slope (67) is provided on one side of the protrusion (66).

5. A method for unmanned intelligent mapping of arable land resources, employing an unmanned intelligent mapping device for arable land resources as described in any one of claims 1-4, characterized in that, Its usage includes the following steps: S1: Measurement preparation. When surveying the cultivated land, at the starting point, the transmission shaft (45) inside the outer box (1) is rotated by the motor, which forces the lower slider (44) to move downward. The lower slider (44) causes the anchor rod (3) to be driven downward into the soil along the arc groove (431). The anchor rod (3) is driven into the soil at the starting point. S2: Line laying measurement. During the unmanned vehicle's movement, the winding wheel (42) rotates to release the guide line (421). The release length of the guide line (421) corresponds to the travel distance of the unmanned vehicle. By measuring the release length of the guide line (421), the distance between the unmanned vehicle and the anchor rod (3) is obtained to determine the distance of a section of the cultivated field. S3: Positioning and retrieval. When encountering a turn or when the length of the guide line (421) is insufficient, the unmanned vehicle stops, and the motor drives the drive shaft (41) to drive the winding wheel (42) to reverse, retrieving the guide line (421) so that the guide line (421) is wound onto the winding wheel (42). The guide line (421) pulls the anchor rod (3) out of the soil, and the anchor rod (3) is retrieved into the opening (2) along with the guide line (421). S4: Cumulative measurement, the drive shaft (45) forces the lower slider (44) to move upward to return to the initial state through the threaded connection, and then the motor drives the lower slider (44) to move downward, and the anchor rod (3) is pinned into the soil again. The unmanned vehicle moves again, releases the guide line (421), and adds up the lengths accumulated by multiple repetitions to obtain the edge length of the target cultivated land.

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