Remote sensing surveying and mapping system and method based on cultivated land protection

Abstract

The invention relates to the technical field of remote sensing surveying and mapping, in particular to a remote sensing surveying and mapping system and method based on cultivated land protection. Comprising a surveying instrument body and a chassis fixedly connected with the lower surface of the surveying instrument body; the lower surface of the chassis is fixedly connected with a main rod; the lower end of the main rod is in a pointed cone shape. The outer wall of the lower section of the main rod is movably sleeved with a movable sleeve in a sealed mode. The upper end of the movable sleeve is fixedly connected with a top ring; the lower end of the movable sleeve is fixedly connected with a bottom ring; an annular tooth groove is formed in the outer wall of the lower section of the main rod; the multiple tooth grooves are distributed adjacently in the axial direction of the main rod. A top groove penetrates through the inner wall and the outer wall of the top ring. The plurality of top grooves are uniformly distributed around the main rod; a gear is rotationally connected into the top groove; the main rod is smoothly pulled out of and inserted into soil under the action of the lever principle by pulling the end, away from the gear, of the pulling rod, so that the surveying instrument body is conveniently transferred, the physical strength of surveying and mapping personnel is saved, and the remote sensing surveying and mapping efficiency of cultivated land protection is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of remote sensing mapping, in particular to a remote sensing mapping system and method based on farmland protection. Background Art

[0002] Ground-based remote sensing mapping equipment is a type of instrument designed to directly measure the electromagnetic wave reflection spectral characteristics of vegetation, soil, or other ground objects. By analyzing these reflection spectra, key information such as crop growth status, health, and moisture content can be obtained. This is crucial for farmers and researchers, as it helps them assess and monitor crop growth, enabling precision agricultural management and effectively protecting arable land resources. Widely used in the agricultural sector, ground-based remote sensing mapping equipment plays a vital role in soil moisture monitoring, pest and disease prediction, and crop yield estimation.

[0003] To ensure stability and accuracy during field measurements, ground-based remote sensing mapping instruments are typically mounted on a bracket. The bottom of the bracket is typically inserted into the soil to maintain stability. However, if the bracket is inserted too shallowly into the soil, measurement stability may be affected, especially in the presence of wind or other external forces, which may lead to inaccurate data. Conversely, if the bracket is inserted too deeply into the soil, it may be difficult to remove, affecting the rapid transfer and mobile measurement of the equipment, and reducing measurement efficiency.

[0004] In view of this, in order to overcome the above technical problems, the present invention proposes a remote sensing mapping system and method based on farmland protection, which solves the above technical problems. Summary of the Invention

[0005] In order to make up for the shortcomings of the existing technology, the present invention proposes a remote sensing mapping system and method based on farmland protection. The present invention moves the lever away from one end of the gear, so that the main rod can be smoothly pulled out and inserted into the soil under the action of the lever principle, thereby facilitating the transfer of the surveying instrument body and saving the physical strength of the surveying personnel, thereby improving the remote sensing mapping efficiency of farmland protection.

[0006] The technical solution adopted by the present invention to solve its technical problems is: the remote sensing mapping system based on farmland protection described in the present invention includes a surveying instrument body and a chassis fixedly connected to the lower surface of the surveying instrument body; the lower surface of the chassis is fixedly connected to the main rod; the lower end of the main rod is in a pointed cone shape: the outer wall of the lower section of the main rod is provided with a movable sealing sleeve; the upper end of the movable sleeve is fixedly connected to the top ring; the lower end of the movable sleeve is fixedly connected to the bottom ring; the outer wall of the lower section of the main rod is provided with an annular tooth groove; a plurality of the tooth grooves are adjacently distributed along the axial direction of the main rod; the inner and outer walls of the top ring are penetrated by a top groove; a plurality of the top grooves are evenly distributed around the main rod; a gear is rotatably connected in the top groove; the gear is meshed with a plurality of tooth grooves; the outer wall of the gear is fixedly connected to a shift lever; the shift lever can drive the main rod to move upward on the inner side of the movable sleeve during the downward flipping process.

[0007] Preferably, the outer diameter of the bottom ring is larger than the outer diameter of the top ring; the outer wall of the bottom ring is provided with a bottom groove; the number of the bottom grooves is the same as that of the top grooves; the shift rod enters the corresponding bottom groove after flipping downward; the groove wall of the bottom groove and the outer wall of the bottom ring are connected through an L-shaped groove; an L-shaped block is slidably connected in the L-shaped groove; one end of the L-shaped block extends to the bottom groove, and the other end extends to the outside of the L-shaped groove; the L-shaped block and the groove wall of the L-shaped groove are connected by a spring.

[0008] Preferably, a guide surface is provided on one end of the L-shaped block facing away from the main rod; and one end of the L-shaped block can be retracted into the L-shaped groove under the squeezing of the shifting rod.

[0009] Preferably, the middle section of the main rod is fixedly connected to a magnet; the end of the lever away from the gear is made of a magnetic material; and the end of the lever away from the gear is turned upward and contacts the magnet.

[0010] Preferably, the top of the surveying instrument body is fixedly connected to the top plate; the top plate and the bottom plate have the same outer diameter; the outer wall of the bottom plate is movably and sealedly connected to the protective tube; the opening of the protective tube faces upward; the inner bottom wall of the protective tube is located below the bottom plate; the lower surface of the bottom plate and the inner bottom wall of the protective tube are connected by a tension spring; a first through hole is provided through the inner bottom wall of the protective tube; the center of the protective tube passes through the main rod and is movably and sealedly connected to the main rod.

[0011] Preferably, a rotating groove is provided at the lower position of the outer wall of the protective tube; the rotating groove is sealed and connected to the turntable; the center of the turntable is located inside the rotating groove; a second through hole is provided through the turntable from top to bottom; the second through hole corresponds to the first through hole after the turntable rotates.

[0012] Preferably, a spiral groove is provided on the inner wall of the protective tube; a movable seal in the spiral groove is connected to a movable block; the movable block is fixedly connected to the outer wall of the chassis; an annular groove is concentrically provided on the lower surface of the chassis; a swivel is rotatably connected in the annular groove; the upper end of the tension spring is fixedly connected to the lower surface of the swivel, and the other end is fixedly connected to the inner bottom wall of the protective tube.

[0013] A remote sensing mapping system method based on farmland protection is applicable to the above-mentioned remote sensing mapping system based on farmland protection. The steps of the method are as follows: S1: Lift the main rod and the surveying instrument body and move them to the point to be measured. Move the L-shaped block along the L-shaped groove so that one of the levers is unlocked in the corresponding bottom groove. Control the lever to flip upwards away from the gear end and above the bottom ring. S2: After the bottom ring is in contact with the soil and kept level, flip the end of the lever away from the gear upward and lift it. The lever will drive the gear to rotate in the top groove, which will drive the lower end of the main rod downward and into the soil. The lever will be attracted to the magnet, completing the installation of the main rod. S3: After the second through hole on the turntable is aligned with the first through hole, the protective tube is moved downward to expose the surveying instrument body, and the surveying instrument body is controlled to start surveying. After the surveyor moves away, the protective tube will automatically rotate upward to cover the surveying instrument body; S4: After completing the surveying, the surveyor will rotate the turntable to cause the second through hole to be staggered with the first through hole, turn the lever away from the gear end and flip it downward, and then pull the main rod out of the ground.

[0014] The beneficial effects of the present invention are as follows: 1. The present invention moves the lever away from one end of the gear, so that the main rod can be smoothly pulled out and inserted into the soil under the action of the lever principle, thereby facilitating the transfer of the surveying instrument body and saving the physical strength of the surveying personnel, thereby improving the remote sensing mapping efficiency of farmland protection.

[0015] 2. The present invention controls the lever to be lifted upward so that the main rod can be inserted into the soil, and can also control the lever to be pushed downward to form a support, so that the surveying instrument body can be changed into two installation forms: placement and insertion, thereby meeting the positioning requirements of different types of soils and making remote sensing mapping more stable.

[0016] 3. The present invention uses a tension spring to pull the protective tube to move upward after the surveyor falls off the surveying instrument body, so that the protective tube can automatically protect the surveying instrument body after the surveyor leaves the vicinity of the surveying instrument body, thereby preventing the surveying instrument body from being wetted by rain and exposed to the sun for a long time, and thus protecting the surveying instrument body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 It is a three-dimensional diagram of the support formed by the shift lever of the present invention; Figure 2 yes Figure 1 A three-dimensional image from another angle; Figure 3 It is a three-dimensional diagram of the movable sleeve, top ring and bottom ring in the present invention; Figure 4 yes Figure 1 sectional view of Figure 5 yes Figure 4 Enlarged view of point A in the middle; Figure 6 yes Figure 4 Enlarged view of point B in the middle; Figure 7 is a cross-sectional view of an L-shaped groove of the present invention; Figure 8 It is a three-dimensional diagram of the protective tube in the present invention; Figure 9 It is a three-dimensional diagram of the main rod of the present invention inserted into the ground; Figure 10 is a flow chart of the method of the present invention; In the figure: surveying instrument body 1, top plate 11, bottom plate 2, annular groove 21, swivel 22, main rod 3, tooth groove 31, magnet 32, movable sleeve 4, top ring 41, bottom ring 42, top groove 43, gear 44, shift lever 45, bottom groove 46, L-shaped groove 47, L-shaped block 5, spring 51, guide surface 52, protective tube 6, tension spring 61, first through hole 62, rotating groove 63, spiral groove 64, movable block 65, turntable 7, second through hole 71. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0020] like Figures 1 to 10 As shown, the present invention includes the following embodiments: Example 1

[0021] A remote sensing mapping system based on farmland protection includes a surveying instrument body 1 and a chassis 2 fixedly connected to the lower surface of the surveying instrument body 1; the lower surface of the chassis 2 is fixedly connected to a main rod 3; the lower end of the main rod 3 is a pointed cone: a movable sealing sleeve is provided on the outer wall of the lower section of the main rod 3; the upper end of the movable sleeve 4 is fixedly connected to a top ring 41; the lower end of the movable sleeve 4 is fixedly connected to a bottom ring 42; an annular tooth groove 31 is provided on the outer wall of the lower section of the main rod 3; a plurality of the tooth grooves 31 are distributed adjacent to each other along the axial direction of the main rod 3; a top groove 43 is provided through the inner and outer walls of the top ring 41; a plurality of the top grooves 43 are evenly distributed around the main rod 3; a gear 44 is rotatably connected to the top groove 43; the gear 44 is meshed with a plurality of tooth grooves 31; the outer wall of the gear 44 is fixedly connected to a shift lever 45; the shift lever 45 can drive the main rod 3 to move upward on the inner side of the movable sleeve 4 during the downward flipping process.

[0022] In this embodiment, the outer diameter of the bottom ring 42 is larger than the outer diameter of the top ring 41; the outer wall of the bottom ring 42 is provided with a bottom groove 46; the number of the bottom grooves 46 is the same as that of the top grooves 43; the shift rod 45 flips downward and enters the corresponding bottom groove 46; the groove wall of the bottom groove 46 and the outer wall of the bottom ring 42 are connected through an L-shaped groove 47; the L-shaped block 5 is slidably connected in the L-shaped groove 47; one end of the L-shaped block 5 extends to the bottom groove 46, and the other end extends to the outside of the L-shaped groove 47; the L-shaped block 5 and the groove wall of the L-shaped groove 47 are connected by a spring 51.

[0023] In this embodiment, a guide surface 52 is provided on one end of the L-shaped block 5 facing away from the main rod 3 ; and one end of the L-shaped block 5 can be retracted into the L-shaped groove 47 under the pressure of the shifting rod 45 .

[0024] When working, after the surveyor holds the main rod 3 and drives the surveying instrument body 1 to move to the position to be measured in the field, the surveyor will choose different placement methods according to the soil conditions of the position to be measured. For some dry soils, it is difficult for the lower end of the main rod 3 to penetrate into the soil, so a supporting method is adopted. Specifically, the surveyor turns the lever 45 downward, and the lever 45 turns downward to drive the gear 44 to rotate in the top groove 43. The gear 44 rotates in the top groove 43 and engages with the tooth groove 31, which drives the main rod 3 to move upward relative to the top ring 41. The main rod 3 will move upward on the inside of the movable sleeve 4, and the lever 45 will enter the bottom groove 46 during the downward turning process. As the lever 45 continues to turn, the lever 45 will squeeze one end of the L-shaped block 5 in one of the bottom grooves 46. Since the guide surface 52 is set at one end of the L-shaped block 5 away from the main rod 3, the lever 45 squeezes the guide surface 52 at one end of the L-shaped block 5. When the lever 45 is engaged in the bottom groove 46 , the spring 51 drives the L-shaped block 5 to move in the opposite direction in the L-shaped groove 47 and reset. The end of the L-shaped block 5 extends out of the L-shaped groove 47 and enters the bottom groove 46 again, thereby locking the lever 45 after entering the bottom groove 46 , so that the lever 45 cannot be moved out of the corresponding bottom groove 46 . When one of the levers 45 cannot be moved out of the bottom groove 46 , the other levers 45 cannot be moved out of the bottom groove 46 either. In this way, when multiple levers 45 are engaged in the bottom groove 46 , the end of the lever 45 away from the gear 44 is lower than the lower end of the main rod 3 in the vertical direction. In this way, multiple levers 45 can form a support, so that the main rod 3 can be stably placed on the hard soil surface.For some wet and soft soils, the surveying instrument body 1 is placed in an insertion manner. Specifically, the L-shaped block 5 is pre-moved to slide in the L-shaped groove 47. When the L-shaped block 5 is moved, it will overcome the activity of the spring 51, so that one end of the L-shaped block 5 is moved out of the bottom groove 46, thereby unlocking the lever 45. Then, the lever 45 is moved away from the bottom groove 46 on the bottom ring 42. As the end of the lever 45 away from the gear 44 is moved upward, the end of the lever 45 away from the gear 44 is vertically higher than the gear 44. The bottom ring 42 is then controlled to fit the soil. The user then steps on the bottom ring 42 to keep it level and lifts the lever 45. The end of the lever 45 away from the gear 44 is lifted upward, which drives the gear 44 to rotate in the top groove 43. The gear 44 rotates in the top groove 43 and engages with the tooth groove 31 on the outer wall of the main rod 3. As a result, the movable sleeve 4 and the main rod 3 move relative to each other according to the lever principle. Since the bottom ring 42 is stepped on by the surveyor and cannot move, the main rod 3 will be inside the movable sleeve 4. The main rod 3 moves downward along the axial direction of the movable sleeve 4, and the main rod 3 is vertically inserted into the soil during the downward movement to complete the installation of the main rod 3. The main rod 3 is stable after the insertion into the soil, so that the surveying instrument body 1 is positioned and placed. Then the surveying instrument is started to start mapping the field crops and soil to realize the collection of cultivated land data. After completing the data collection of one point, the surveying personnel needs to change the mapping point for mapping. Specifically, the end of the lever 45 away from the gear 44 is pulled away, and the end of the lever 45 away from the gear 44 will turn downward. The gear 44 rotates in the top groove 43 and meshes with the tooth groove 31. Since the bottom ring 42 is against the soil surface, the lever 45, which is away from the gear 44, turns downward and drives the main rod 3 to move upward inside the movable sleeve 4. The lower end of the main rod 3 is pulled out of the soil by the lever principle. The soil on the outer surface of the main rod 3 is scraped off by the movable sleeve 4 during the movement inside the movable sleeve 4. Then the main rod 3 and the surveying instrument body 1 are directly lifted and moved to the next surveying point, and the above action is repeated. The present invention moves the lever 45 away from one end of the gear 44, so that the main rod 3 can be smoothly pulled out and inserted into the soil under the action of the lever principle, thereby facilitating the transfer of the surveying instrument body 1 and saving the physical strength of the surveying personnel, thereby improving the remote sensing mapping efficiency of cultivated land protection.

[0025] The present invention controls the lever 45 to be lifted upward so that the main rod 3 can be inserted into the soil, and can also control the lever 45 to be pushed downward to form a support, so that the surveying instrument body 1 can be changed into two installation forms: placement and insertion, thereby meeting different types of soil positioning requirements and making remote sensing mapping more stable.

[0026] Example 2

[0027] The middle section of the main rod 3 is fixedly connected to the magnet 32 ​​; the end of the lever 45 away from the gear 44 is made of magnetic material; the end of the lever 45 away from the gear 44 is turned upward and contacts the magnet 32 ​​.

[0028] During operation, the end of the lever 45 away from the gear 44 is made of a magnetic material, such as iron. In the process of the lever 45 away from the gear 44 being flipped downward to form a support leg for the main rod 3 to support, the iron lever 45 can increase the strength of the end of the lever 45 away from the gear 44, thereby being more conducive to supporting the surveying instrument body 1. In addition, in the process of the lever 45 away from the gear 44 being flipped upward, the lower end of the main rod 3 is inserted into the soil. After the end of the lever 45 away from the gear 44 is flipped upward, it will approach the magnet 32. The end of the lever 45 away from the gear 44 is magnetically attracted by the magnet 32, so that the end of the lever 45 away from the gear 44 is locked, further improving the stability of the main rod 3 after being inserted into the soil, so that the surveying stability of the surveying instrument body 1 is improved.

[0029] Example 3

[0030] The top of the surveying instrument body 1 is fixedly connected to the top plate 11; the top plate 11 has the same outer diameter as the chassis 2; the outer wall of the chassis 2 is movably and sealedly connected to the protective tube 6; the opening of the protective tube 6 faces upward; the inner bottom wall of the protective tube 6 is located below the chassis 2; the lower surface of the chassis 2 and the inner bottom wall of the protective tube 6 are connected by a tension spring 61; a first through hole 62 is provided through the inner bottom wall of the protective tube 6; the center of the protective tube 6 passes through the main rod 3 and is movably and sealedly connected to the main rod 3.

[0031] In this embodiment, a rotation groove 63 is provided at the lower position of the outer wall of the protective tube 6; the rotation groove 63 is rotatably sealed and connected to the turntable 7; the center of the turntable 7 is located on the inner side of the rotation groove 63; a second through hole 71 is provided through the upper and lower parts of the turntable 7; the second through hole 71 corresponds to the first through hole 62 after the turntable 7 rotates.

[0032] In this embodiment, a spiral groove 64 is provided on the inner wall of the protective tube 6; a movable block 65 is movably sealed in the spiral groove 64; the movable block 65 is fixedly connected to the outer wall of the chassis 2; an annular groove 21 is concentrically provided on the lower surface of the chassis 2; a swivel 22 is rotatably connected in the annular groove 21; the tension spring 61 is fixedly connected to the lower surface of the swivel 22 at its upper end, and is fixedly connected to the inner bottom wall of the protective tube 6 at its lower end.

[0033] During operation, after the main rod 3 is placed at the surveying point, the turntable 7 is rotated in the rotating groove 63. In order to prevent the outer wall of the turntable 7 from slipping, an anti-skid portion is provided on the outer wall of the turntable 7. As the turntable 7 rotates, the second through hole 71 on the turntable 7 is aligned with the first through hole 62. The space between the lower surface of the chassis 2 and the inner bottom wall of the protective tube 6 is called a working chamber. After the second through hole 71 is connected with the first through hole 62, the working chamber is connected with the external air. As the surveyor moves, the protective tube 6 will move close to the bottom ring 42. The protective tube 6 will pull the tension spring 61 and make the space of the working chamber larger to form a negative pressure. The outer wall of the chassis 2 and the inner wall of the protective tube 6 are movably sealed, so the external air will flow along The protective tube 6 moves toward the bottom ring 42, causing the spiral groove 64 and the movable block 65 to move, thereby exposing the surveying instrument body 1 between the top plate 11 and the bottom plate 2. The surveying personnel then operate the surveying instrument body 1 and use the surveying instrument body 1 for remote sensing mapping. During the surveying process, the surveying instrument body 1 is held by the surveying personnel's fingers, so that the protective tube 6 cannot move upward under the obstruction. When the surveying personnel's hand is removed from the surveying instrument body 1, the tension spring 61 begins to pull the protective tube 6 upward. During the upward movement of the protective tube 6, the inner wall of the protective tube 6 is The spiral groove 64 on the upper portion and the movable block 65 generate movement. Due to the action of the spiral groove 64 and the movable block 65, the protective tube 6 is pulled upward by the tension spring 61 and rotates. Since the lower surface of the chassis 2 is provided with an annular groove 21, the rotating ring 22 is connected to the annular groove 21. Therefore, the protective tube 6 is pulled upward by the tension spring 61 without affecting the movement of the spiral groove 64 and the movable block 65. In this way, the protective tube 6 will move upward and rotate smoothly. During the upward movement of the protective tube 6, the lateral position of the surveying instrument body 1 will gradually be blocked. The top of the surveying instrument body 1 is blocked by the top plate 11, and the bottom of the surveying instrument body 1 is blocked by the chassis 2. In this way, during the upward movement of the protective tube 6 The surveying instrument body 1 will be blocked in the lateral direction in order to prevent vegetation from being stuck between the outer wall of the top plate 11 and the upper end of the protective tube 6, so that the protective tube 6 can move upward during the rotation process. When the protective tube 6 encounters vegetation or other obstacles during the rotation and upward movement, the vegetation can be cut off by rotation, so that the protective tube 6 can move upward smoothly and block the outer wall of the top plate 11, completing the protection of the surveying instrument body 1. In this way, under the condition of changeable weather in the field, even if the surveying personnel walk away from the surveying instrument body 1, the surveying instrument body 1 will also form self-protection to prevent the surveying instrument body 1 from being wetted by rain and being exposed to the sun all the time, thereby achieving protection of the surveying instrument body 1;After the surveyor returns to the surveying instrument body 1, he can move the protective tube 6 downward again according to the surveying requirements, so that the surveying instrument body 1 is exposed again and the surveying is carried out. After the surveying is completed, the main rod 3 is lifted from the ground. In order to further protect the surveying instrument body 1, the turntable 7 is rotated to stagger the second through hole 71 with the first through hole 62, so that the working chamber is closed. In this way, external air cannot enter the working chamber, and the protective tube 6 is locked. In this embodiment, the protective tube 6 is pulled upward by the tension spring 61 after the surveyor falls off the surveying instrument body 1, so that the protective tube 6 can automatically protect the surveying instrument body 1 after the surveyor leaves the vicinity of the surveying instrument body 1, thereby preventing the surveying instrument body 1 from being wetted by rain and exposed to the sun for a long time, and thus protecting the surveying instrument body 1.

[0034] Example 4

[0035] A remote sensing mapping system method based on farmland protection is applicable to the above-mentioned remote sensing mapping system based on farmland protection. The steps of the method are as follows: S1: Lift the main rod 3 and the surveying instrument body 1 and move them to the point to be measured. Move the L-shaped block 5 along the L-shaped groove 47 so that one of the levers 45 is unlocked in the corresponding bottom groove 46. The end of the lever 45 away from the gear 44 is controlled to flip upward and above the bottom ring 42. S2: After controlling the bottom ring 42 to fit the soil and keep it horizontal, flip the end of the lever 45 away from the gear 44 upward and lift it. The lever 45 will drive the gear 44 to rotate in the top groove 43, and the gear 44 will drive the lower end of the main rod 3 to move downward and insert into the soil. The lever 45 is magnetically attracted around the magnet 32, completing the installation and placement of the main rod 3. S3: After the second through hole 71 on the turntable 7 is aligned with the first through hole 62, the protective tube 6 is moved downward to expose the surveying instrument body 1, and the surveying instrument body 1 is controlled to start surveying. After the surveyor moves away, the protective tube 6 will automatically rotate upward and cover the surveying instrument body 1; S4: After completing the surveying, the surveyor rotates the turntable 7 to shift the second through hole 71 away from the first through hole 62, and turns the lever 45 away from the gear 44 to flip downward, and the main rod 3 is pulled out from the ground.

[0036] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the attached Figure 1The orientation or positional relationship shown is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it cannot be understood as limiting the scope of protection of the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0037] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A remote sensing mapping system for farmland protection, comprising a surveying instrument body and a chassis fixedly connected to the lower surface of the surveying instrument body; the lower surface of the chassis is fixedly connected to a main pole; the lower end of the main pole is tapered; and the following features: The movable sealing sleeve on the outer wall of the lower section of the main rod is provided with a movable sleeve; the upper end of the movable sleeve is fixedly connected to the top ring; the lower end of the movable sleeve is fixedly connected to the bottom ring; the outer wall of the lower section of the main rod is provided with an annular tooth groove; multiple tooth grooves are adjacently distributed along the axial direction of the main rod; top grooves are provided through the inner and outer walls of the top ring; multiple top grooves are evenly distributed around the main rod; a gear is rotatably connected in the top groove; the gear is engaged with multiple tooth grooves; the outer wall of the gear is fixedly connected to the shift rod; the shift rod can drive the main rod to move up on the inner side of the movable sleeve during the downward flipping process.

2. The remote sensing mapping system based on farmland protection according to claim 1, characterized in that: The outer diameter of the bottom ring is larger than the outer diameter of the top ring; a bottom groove is provided on the outer wall of the bottom ring; the number of the bottom grooves is the same as that of the top grooves; the shift rod enters the corresponding bottom groove after flipping downward; the groove wall of the bottom groove and the outer wall of the bottom ring are connected by an L-shaped groove; an L-shaped block is slidably connected in the L-shaped groove; one end of the L-shaped block extends to the bottom groove, and the other end extends to the outside of the L-shaped groove; the L-shaped block and the groove wall of the L-shaped groove are connected by a spring.

3. The remote sensing mapping system based on farmland protection according to claim 2 is characterized in that: One end of the L-shaped block is provided with a guide surface on a side facing away from the main rod; and one end of the L-shaped block can be retracted into the L-shaped groove under the squeezing of the shifting rod.

4. The remote sensing mapping system based on farmland protection according to claim 1 is characterized in that: The middle section of the main rod is fixedly connected to a magnet; the end of the shift rod away from the gear is made of a magnetic material; and the end of the shift rod away from the gear is turned upward and contacts the magnet.

5. The remote sensing mapping system based on farmland protection according to claim 1 is characterized in that: The top of the surveying instrument body is fixedly connected to the top plate; the top plate and the bottom plate have the same outer diameter; the outer wall of the bottom plate is movably and sealedly connected to the protective tube; the opening of the protective tube faces upward; the inner bottom wall of the protective tube is located below the bottom plate; the lower surface of the bottom plate and the inner bottom wall of the protective tube are connected by a tension spring; a first through hole is provided through the inner bottom wall of the protective tube; the center of the protective tube passes through the main rod and is movably and sealedly connected to the main rod.

6. The remote sensing mapping system based on farmland protection according to claim 5, characterized in that: A rotation groove is provided at the lower position of the outer wall of the protective tube; the rotation seal in the rotation groove is connected to the turntable; the center of the turntable is located inside the rotation groove; a second through hole is provided through the turntable from top to bottom; the second through hole corresponds to the first through hole after the turntable rotates.

7. The remote sensing mapping system based on farmland protection according to claim 5, characterized in that: The inner wall of the protective tube is provided with a spiral groove; the movable seal in the spiral groove is connected to the movable block; the movable block is fixedly connected to the outer wall of the chassis; the lower surface of the chassis is concentrically provided with an annular groove; the annular groove is rotatably connected to the swivel; the upper end of the tension spring is fixedly connected to the lower surface of the swivel, and the other end is fixedly connected to the inner bottom wall of the protective tube.

8. A remote sensing mapping system method based on farmland protection, the method being applicable to the remote sensing mapping system based on farmland protection according to any one of claims 1 to 7, characterized in that: The steps of this method are as follows: S1: Lift the main rod and the surveying instrument body and move them to the point to be measured. Move the L-shaped block along the L-shaped groove so that one of the levers is unlocked in the corresponding bottom groove. Control the lever to flip upwards away from the gear end and above the bottom ring. S2: After the bottom ring is in contact with the soil and kept level, flip the end of the lever away from the gear upward and lift it. The lever will drive the gear to rotate in the top groove, which will drive the lower end of the main rod downward and into the soil. The lever will be attracted to the magnet, completing the installation of the main rod. S3: After the second through hole on the turntable is aligned with the first through hole, the protective tube is moved downward to expose the surveying instrument body, and the surveying instrument body is controlled to start surveying. After the surveyor moves away, the protective tube will automatically rotate upward to cover the surveying instrument body; S4: After completing the surveying, the surveyor will rotate the turntable to cause the second through hole to be staggered with the first through hole, turn the lever away from the gear end and flip it downward, and then pull the main rod out of the ground.

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