阅读说明：本技术 一种农村土地宅基地面积测量方法 (Method for measuring area of rural land homestead ) 是由 阮梅洪 吴广艳 杨文挹 曾志强 谭剑 傅国庆 斯高阳 于 2020-07-03 设计创作，主要内容包括：本发明属于面积测量技术领域,具体的说是一种农村土地宅基地面积测量方法,该方法中使用的测量装置包括无人机本体,所述无人机本体底端固定有GPS定位仪,所述GPS定位仪用于所述无人机本体底端固定有两个以上的支架,所述支架顶端转动安装有辊轮,所述辊轮呈三角形分布,所述无人机本体侧壁上固定有一号电机和二号电机,所述一号电机和二号电机的输出轴端分别固定有一号扇叶和二号扇叶,所述一号扇叶和二号扇叶用于调节无人机本体的位置；本发明通过利用无人机来带动测量工具沿着墙体外围移动,实现险要地形的宅基地面积测量,提高了测量精度的同时也保证了测量人员的人身安全,进而提高了测量精度。(The invention belongs to the technical field of area measurement, and particularly relates to a method for measuring the area of a rural land homestead, wherein a measuring device used in the method comprises an unmanned aerial vehicle body, a GPS (global positioning system) locator is fixed at the bottom end of the unmanned aerial vehicle body, more than two supports are fixed at the bottom end of the unmanned aerial vehicle body by the GPS locator, rollers are rotatably installed at the top ends of the supports and are distributed in a triangular shape, a first motor and a second motor are fixed on the side wall of the unmanned aerial vehicle body, first fan blades and second fan blades are respectively fixed at the output shaft ends of the first motor and the second motor and are used for adjusting the position of the unmanned aerial vehicle body; according to the invention, the unmanned aerial vehicle is used for driving the measuring tool to move along the periphery of the wall body, so that the area measurement of the homestead in dangerous terrain is realized, the measurement precision is improved, and the personal safety of measuring personnel is ensured, thereby improving the measurement precision.)

1. A method for measuring the area of a rural land homestead is characterized by comprising the following steps:

s1: debugging a control module and a measuring device which are required by measurement to enable the control module and the measuring device to be in working states, primarily evaluating a homestead which needs to be measured, and planning a primary measurement scheme;

s2: the control module in S1 is used for controlling the measuring device, so that the unmanned aerial vehicle body (1) drives the GPS locator (2) to lift off, the first motor (5) drives the first fan blade (7) to rotate to generate thrust to enable the roller (4) to be tightly attached to the wall surface of a home base, the second motor (6) drives the second fan blade (8) to generate thrust to drive the measuring device to move, and data are sent to the control module in the moving process of the GPS locator (2) on the measuring device;

s3: after wrapping a circle around the ground wall of the homestead, recovering the measuring device, analyzing and calculating data measured by the measuring device so as to obtain the area of the homestead, and repeatedly measuring for three times and taking an average value;

wherein, measuring device who uses in S1-S3 includes unmanned aerial vehicle body (1), unmanned aerial vehicle body (1) bottom mounting has GPS locater (2), GPS locater (2) are used for unmanned aerial vehicle body (1) bottom mounting has more than two support (3), running roller (4) are installed in support (3) top rotation, running roller (4) are triangular distribution, be fixed with a motor (5) and No. two motor (6) on unmanned aerial vehicle body (1) lateral wall, the output axle head of a motor (5) and No. two motor (6) is fixed with No. one flabellum (7) and No. two flabellum (8) respectively, No. one flabellum (7) and No. two flabellum (8) are used for adjusting the position of unmanned aerial vehicle body (1), unmanned aerial vehicle body (1) bottom is equipped with wide angle camera (9), wide angle camera (9) are used for observing the position, be equipped with the controller on unmanned aerial vehicle body (1), controller and control module communication connection, the controller is used for controlling measuring device work.

2. The rural land homestead area measurement method of claim 1, wherein: no. two motor (6) are biax motors, the one end output shaft that No. two flabellum (8) were kept away from to No. two motor (6) is fixed with connecting rod (10), unmanned aerial vehicle body (1) is passed in connecting rod (10), the one end that No. two motor (6) were kept away from to unmanned aerial vehicle body (1) is fixed with electro-magnet (11), the one end that No. two motor (6) were kept away from to connecting rod (10) is fixed with clutch disc (12), the one end that No. two motor (6) were kept away from to unmanned aerial vehicle body (1) is fixed with mounting bracket (13) of U-shaped, it has pivot (14) to rotate on mounting bracket (13), pivot (14) are close to the one end movable mounting of No. two motor (6) and have pressure disk (15) of iron, the one end that No. two motor (6) were kept away from in pivot (14) is fixed with carousel (16), be fixed with more than two, movably mounted has cutter (18) in sleeve (17), cutter (18) stretch out sleeve (17) and surface winding towards the one end of No. two motor (6) and are fixed with reset spring (19), reset spring (19) are used for reseing of cutter (18), cutter (18) are used for cutting the shelter from the thing.

3. The rural land homestead area measurement method of claim 2, wherein: two auxiliary blades (20) are rotatably installed at one end, far away from the second motor (6), of the cutter (18), a limiting spring (21) is fixed between every two adjacent auxiliary blades (20), and the auxiliary blades (20) are used for enlarging the cutting range of the cutter (18).

4. The rural land homestead area measurement method of claim 3, wherein: the auxiliary blade (20) is obliquely arranged, an elastic piece (22) is arranged on the surface of the auxiliary blade (20), and the elastic piece (22) is used for bouncing off the cut shielding object.

5. The rural land homestead area measurement method of claim 4, wherein: unmanned aerial vehicle body (1) top is fixed with round bar (23), the one end that No. two motors (6) were kept away from in round bar (23) rotates and installs No. three flabellum (24), the one end that No. two motors (6) were kept away from in round bar (23) is fixed with fan housing (25), be equipped with shower nozzle (26) on fan housing (25) lateral wall, shower nozzle (26) are used for blowing away debris under cutter (18) the cutting, be equipped with between pivot (14) and round bar (23) hold-in range (27), hold-in range (27) are used for the synchronous rotation of pivot (14) and round bar (23).

6. The rural land homestead area measurement method of claim 5, wherein: the spray heads (26) are located on two sides of the fan cover (25), the spray heads (26) are of a C-shaped structure, the cross-sectional area of one end, far away from the fan cover (25), of each spray head (26) is larger than that of one end, close to the fan cover (25), of each spray head, and the spray heads (26) and the fan cover (25) are installed in an inclined mode.

Technical Field

The invention belongs to the technical field of area measurement, and particularly relates to a method for measuring the area of a rural land homestead.

Background

The homestead is the land occupied by rural farmers or individuals as the homestead and used by the group. The method comprises three types of land on which a house is built, land on which a house is built or which is decided to be used for building a house, land on which a house is built but which is covered or cannot be used for housing, and a planning land on which a house is to be built. The ownership of the homesteads belongs to rural collective economic organizations. Buildings and structures must be bounded by the outer wall envelope and by the inner wall or column envelope. The areas of the balcony, the stair and the like which are picked out are generally calculated by projecting the vertical projection of the protruding part, but the bottom layer cannot be constructed.

Disclosure of Invention

In order to make up for the defects of the prior art, the invention provides the method for measuring the area of the rural land homestead.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a method for measuring the area of a rural land homestead, which comprises the following steps:

s1: debugging the control module and the measuring device which are required by measurement to enable the control module and the measuring device to be in working states, primarily evaluating the house base which needs to be measured, planning a primary measurement scheme, ensuring the normal operation of the measuring device in the debugging step, avoiding the crash caused by faults and reducing the loss caused by faults; the pre-estimation scheme is to plan a measurement route in advance, so that the problems of repeated measurement and inaccurate measurement are avoided;

s2: the control module in S1 is used for controlling the measuring device, so that the unmanned aerial vehicle body drives the GPS position finder to lift off, the first motor drives the first fan blade to rotate to generate thrust, the roller is made to be close to the wall surface of a home base, the second motor drives the second fan blade to generate thrust to drive the measuring device to move, and data are sent to the control module in the moving process of the GPS position finder on the measuring device; the measuring device measures the outer wall in the air, and manual measurement is replaced, so that the safety of the measuring process is ensured, and the measuring precision is improved;

s3: after wrapping a circle around the ground wall of the homestead, recovering the measuring device, analyzing and calculating data measured by the measuring device so as to obtain the area of the homestead, and repeatedly measuring for three times and taking an average value;

the measuring device used in S1-S3 comprises an unmanned aerial vehicle body, a GPS positioning instrument is fixed at the bottom end of the unmanned aerial vehicle body and used for fixing more than two supports at the bottom end of the unmanned aerial vehicle body, rollers are rotatably mounted at the top ends of the supports and are distributed in a triangular shape, a first motor and a second motor are fixed on the side wall of the unmanned aerial vehicle body, a first fan blade and a second fan blade are respectively fixed at output shaft ends of the first motor and the second motor and used for adjusting the position of the unmanned aerial vehicle body, a wide-angle camera is arranged at the bottom end of the unmanned aerial vehicle body and used for observing the position, a controller is arranged on the unmanned aerial vehicle body and is in communication connection with a control module, and the controller is used for controlling the measuring device to work; when the device is used, the existing homestead area measurement mode is that workers pull a ruler and measure by means of an instrument, measurement personnel can finish measurement only by walking around a house, and the homestead in the mountainous and water-by-water areas and the critical areas of terrain cannot be safely and effectively measured, so that the problem of area measurement exists, and the device solves the problem; through the arrangement of the measuring device, the unmanned aerial vehicle body is controlled to work through the control module during measurement, so that the unmanned aerial vehicle body drives the GPS positioning instrument to lift off; meanwhile, the first motor drives the first fan blade to work to generate thrust, so that the measuring device generates transverse stable movement, and the two rollers on one side of the unmanned aerial vehicle body are in contact with the wall surface; the roller contacts with the wall surface to enable the unmanned aerial vehicle body to be perpendicular to the wall surface, the power of the first motor is reduced after the roller contacts with the wall surface, and meanwhile, the second motor drives the second fan blades to rotate, so that the unmanned aerial vehicle body generates forward power, and the measuring device can run linearly along the wall surface; the trend of the wall body is observed in the picture transmitted by the wide-angle camera, when the vertical wall surface is met, two rollers on the other right-angle side of the unmanned aerial vehicle body in a triangular structure are in contact with the wall surface, and meanwhile, a motor rotates reversely to drive a fan blade to generate reverse thrust, so that the measuring device moves along the vertical wall surface; the measuring device is recovered after the outer wall is wound for one circle, and the measurement is finished; the arrangement of the first motor and the first fan blade enables the unmanned aerial vehicle body to be always attached to the wall, the moving track of the GPS locator is the outer perimeter of the wall, the problem that the unmanned aerial vehicle deviates from a preset route due to wind power or broken lines of the wall is avoided, and therefore the measuring accuracy is guaranteed; according to the invention, the unmanned aerial vehicle is used for driving the measuring tool to move along the periphery of the wall body, so that the area measurement of the homestead in dangerous terrain is realized, the measurement precision is improved, and the personal safety of measuring personnel is ensured, thereby improving the measurement precision.

Preferably, the second motor is a double-shaft motor, a connecting rod is fixed to an output shaft at one end of the second motor, which is far away from the second fan blade, the connecting rod penetrates through the unmanned aerial vehicle body, an electromagnet is fixed to one end of the unmanned aerial vehicle body, which is far away from the second motor, a clutch disc is fixed to one end of the connecting rod, which is far away from the second motor, a U-shaped mounting frame is fixed to one end of the unmanned aerial vehicle body, which is far away from the second motor, a rotating shaft is rotatably mounted on the mounting frame, an iron pressure plate is movably mounted at one end, which is close to the second motor, of the rotating shaft, a rotating disc is fixed to one end, which is far away from the second motor, two or more sleeves are fixed to the rotating disc at equal intervals in the circumferential direction of the rotating disc, a cutter is movably mounted in each sleeve, the cutter is used for cutting the shielding object; when the unmanned aerial vehicle is used, in the moving process of the measuring device, the measuring device can be shielded by flowers, plants, branches and leaves, so that the measuring device cannot move or the work of the unmanned aerial vehicle body is influenced; through the arrangement of the cutter, when branches and leaves are observed to appear on a forward route in the wide-angle camera, a command is sent to the electromagnet through the control module, so that the electromagnet generates suction force on the pressure plate, and the pressure plate is contacted with the clutch plate; the clutch plate is always in a rotating state under the action of the second motor, and the pressure plate is in contact with the clutch plate and then drives the rotating shaft to rotate, so that the sleeve rotates; the cutter inside the sleeve is thrown out when the sleeve rotates, and the cutter clears branches and leaves on the advancing route in the rotating process, so that the normal movement of the measuring device is ensured, and the normal measurement is further ensured.

Preferably, one end of the cutter, which is far away from the second motor, is rotatably provided with two auxiliary blades, a limiting spring is fixed between every two adjacent auxiliary blades, and the auxiliary blades are used for enlarging the cutting range of the cutter; when the unmanned aerial vehicle is used, the cutting range formed after the cutter is popped up is limited, and the unmanned aerial vehicle body cannot be fully covered, so that branches and leaves can hook the unmanned aerial vehicle body; the auxiliary blades are thrown out of the sleeve in the rotating process of the cutter, and are thrown out of the sleeve at the same time, so that two adjacent auxiliary blades are unfolded under the action of the limiting spring; after two adjacent auxiliary blades are unfolded, the cutting range of the cutter is improved, so that obstacles in the advancing range of the measuring device are cleaned, and the normal measurement is ensured; make the cutter enter into the sleeve under the effect of reset spring again after accomplishing the cutting, make two adjacent vice blades paste simultaneously and enter into the sleeve together to accomodating when accomplishing cutter and vice blade.

Preferably, the auxiliary blade is obliquely installed, an elastic sheet is arranged on the surface of the auxiliary blade and used for elastically opening the cut shielding object; when the unmanned aerial vehicle is used, the auxiliary blade is obliquely arranged, so that the auxiliary blade can impact foreign matters when cutting is carried out, the cut foreign matters are bounced off, and the foreign matters are prevented from influencing the normal flight of the unmanned aerial vehicle body; meanwhile, the secondary blade is obliquely arranged to form wind power, so that cut foreign matters are blown away; the elastic sheet on the surface of the auxiliary blade generates elastic force when contacting with foreign matters, and the cut foreign matters are bounced off, so that the normal movement of the measuring device is ensured.

Preferably, a round bar is fixed at the top end of the unmanned aerial vehicle body, a third fan blade is rotatably mounted at one end, away from the second motor, of the round bar, a fan cover is fixed at one end, away from the second motor, of the round bar, a nozzle is arranged on the side wall of the fan cover and used for blowing away sundries cut by a cutter, a synchronous belt is arranged between the rotating shaft and the round bar and used for synchronously rotating the rotating shaft and the round bar; when the unmanned aerial vehicle is used, foreign matters spatter around when the branches and leaves are cut, and inevitably fall onto fan blades of the unmanned aerial vehicle body, so that the unmanned aerial vehicle body is unstable in flying; the synchronous belt is arranged, so that the round rod rotates while the rotating shaft rotates, and the third fan blade generates wind power; wind power that No. three flabellum produced enters into in the shower nozzle and from the shower nozzle blowout from the fan housing for the foreign matter that splashes is blown away by gaseous, thereby has guaranteed the flight stability of unmanned aerial vehicle body, and then has guaranteed going on smoothly of measurement.

Preferably, the nozzles are positioned on two sides of the fan housing, the nozzles are of a C-shaped structure, the cross-sectional area of one end, far away from the fan housing, of each nozzle is larger than that of one end, close to the fan housing, of each nozzle, and the nozzles and the fan housing are obliquely arranged; when the unmanned aerial vehicle is used, the nozzle is of a C-shaped structure, so that gas blown out by the nozzle is arc-shaped, and a gas barrier layer is formed above the fan blades of the unmanned aerial vehicle body by the gas, so that foreign matters are prevented from falling into the fan blades of the unmanned aerial vehicle body; the outlet opening of the spray head is large, so that the gas sprayed by the spray head is in a scattering state, the protection range of the gas is enlarged, and the protection effect of the spray head is improved.

The invention has the following beneficial effects:

1. according to the method for measuring the area of the rural land homestead, the measuring device used in the method drives the measuring tool to move along the periphery of the wall body by using the unmanned aerial vehicle, so that the area of the homestead in a dangerous terrain is measured, the measuring accuracy is improved, the personal safety of measuring personnel is guaranteed, and the measuring accuracy is further improved.

2. According to the method for measuring the area of the rural land homestead, the measuring device used in the method cuts and cleans the obstacles on the route by arranging the cutter and the auxiliary blade, so that the normal measurement is ensured.

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is a flow chart of a method of the present invention;

FIG. 2 is a three-dimensional view of a measuring device used in the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

FIG. 4 is a bottom view of a measuring device used in the present invention;

FIG. 5 is a schematic view of the positional relationship of the cutter and the sleeve;

in the figure: unmanned aerial vehicle body 1, GPS locater 2, support 3, running roller 4, motor 5, No. two motors 6, flabellum 7, No. two flabellums 8, wide-angle camera 9, connecting rod 10, electro-magnet 11, clutch disc 12, mounting bracket 13, pivot 14, pressure disk 15, carousel 16, sleeve 17, cutter 18, reset spring 19, auxiliary blade 20, spacing spring 21, flexure strip 22, round bar 23, No. three flabellum 24, fan housing 25, shower nozzle 26, hold-in range 27.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 to 5, the method for measuring the area of a rural land homestead according to the present invention includes the following steps:

s1: debugging the control module and the measuring device which are required by measurement to enable the control module and the measuring device to be in working states, primarily evaluating the house base which needs to be measured, planning a primary measurement scheme, ensuring the normal operation of the measuring device in the debugging step, avoiding the crash caused by faults and reducing the loss caused by faults; the pre-estimation scheme is to plan a measurement route in advance, so that the problems of repeated measurement and inaccurate measurement are avoided;

s2: the control module in the S1 is used for controlling the measuring device, so that the unmanned aerial vehicle body 1 drives the GPS locator 2 to lift off, the first motor 5 drives the first fan blade 7 to rotate to generate thrust, the roller 4 is made to be attached to the wall surface of a home base, the second motor 6 drives the second fan blade 8 to generate thrust to drive the measuring device to move, and data are sent to the control module in the moving process of the GPS locator 2 on the measuring device; the measuring device measures the outer wall in the air, and manual measurement is replaced, so that the safety of the measuring process is ensured, and the measuring precision is improved;

s3: after wrapping a circle around the ground wall of the homestead, recovering the measuring device, analyzing and calculating data measured by the measuring device so as to obtain the area of the homestead, and repeatedly measuring for three times and taking an average value;

wherein the measuring device used in S1-S3 comprises an unmanned aerial vehicle body 1, a GPS locator 2 is fixed at the bottom end of the unmanned aerial vehicle body 1, the GPS locator 2 is used for fixing more than two brackets 3 at the bottom end of the unmanned aerial vehicle body 1, the top end of the bracket 3 is rotatably provided with rollers 4, the rollers 4 are distributed in a triangular shape, the side wall of the unmanned aerial vehicle body 1 is fixedly provided with a first motor 5 and a second motor 6, the output shaft ends of the first motor 5 and the second motor 6 are respectively fixed with a first fan blade 7 and a second fan blade 8, the first fan blade 7 and the second fan blade 8 are used for adjusting the position of the unmanned aerial vehicle body 1, the bottom end of the unmanned aerial vehicle body 1 is provided with a wide-angle camera 9, the wide-angle camera 9 is used for observing the position, the unmanned aerial vehicle body 1 is provided with a controller, the controller is in communication connection with the control module, and the controller is used for controlling the measuring device to work; when the device is used, the existing homestead area measurement mode is that workers pull a ruler and measure by means of an instrument, measurement personnel can finish measurement only by walking around a house, and the homestead in the mountainous and water-by-water areas and the critical areas of terrain cannot be safely and effectively measured, so that the problem of area measurement exists, and the device solves the problem; through the arrangement of the measuring device, the unmanned aerial vehicle body 1 is controlled to work through the control module during measurement, so that the unmanned aerial vehicle body 1 drives the GPS locator 2 to lift off; meanwhile, the first motor 5 drives the first fan blade 7 to work to generate thrust, so that the measuring device generates transverse stable movement, and the two rollers 4 on one side of the unmanned aerial vehicle body 1 are in contact with the wall surface; the roller 4 is in contact with the wall surface, so that the unmanned aerial vehicle body 1 is perpendicular to the wall surface, the power of the first motor 5 is reduced after the roller 4 is in contact with the wall surface, and meanwhile, the second motor 6 drives the second fan blade 8 to rotate, so that the unmanned aerial vehicle body 1 generates forward power, and the measuring device can run linearly along the wall surface; the trend of the wall body is observed in the picture transmitted by the wide-angle camera 9, when the vertical wall surface is met, two rollers 4 on the other right-angle side of the unmanned aerial vehicle body 1 in a triangular structure are in contact with the wall surface, and meanwhile, a motor 5 rotates reversely to drive a fan blade 7 to generate reverse thrust, so that the measuring device moves along the vertical wall surface; the measuring device is recovered after the outer wall is wound for one circle, and the measurement is finished; the arrangement of the first motor 5 and the first fan blades 7 enables the unmanned aerial vehicle body 1 to be always attached to a wall, the moving track of the GPS locator 2 is the outer perimeter of the wall, the problem that the unmanned aerial vehicle deviates from a preset route due to wind power or broken lines of the wall is avoided, and therefore the measuring accuracy is guaranteed; according to the invention, the unmanned aerial vehicle is used for driving the measuring tool to move along the periphery of the wall body, so that the area measurement of the homestead in dangerous terrain is realized, the measurement precision is improved, and the personal safety of measuring personnel is ensured, thereby improving the measurement precision.

As a specific embodiment of the invention, the second motor 6 is a double-shaft motor, a connecting rod 10 is fixed on an output shaft of one end of the second motor 6, which is far away from the second fan blade 8, the connecting rod 10 penetrates through the unmanned aerial vehicle body 1, an electromagnet 11 is fixed on one end of the unmanned aerial vehicle body 1, which is far away from the second motor 6, a clutch plate 12 is fixed on one end of the connecting rod 10, which is far away from the second motor 6, a U-shaped mounting frame 13 is fixed on one end of the unmanned aerial vehicle body 1, which is far away from the second motor 6, a rotating shaft 14 is rotatably mounted on the mounting frame 13, an iron platen 15 is movably mounted on one end of the rotating shaft 14, which is close to the second motor 6, a rotating disc 16 is fixed on one end of the rotating shaft 14, which is far away from the second motor 6, two or more sleeves 17 are equidistantly fixed on the rotating disc 16 along the circumferential direction, a cutter 18 is movably mounted in the sleeves 17, one end, the return spring 19 is used for returning the cutter 18, and the cutter 18 is used for cutting the shielding object; when the unmanned aerial vehicle is used, in the moving process of the measuring device, the measuring device can be shielded by flowers, plants, branches and leaves, so that the measuring device cannot move, or the work of the unmanned aerial vehicle body 1 is influenced; by arranging the cutter 18, when branches and leaves are observed to appear on the advancing route in the wide-angle camera 9, a command is sent to the electromagnet 11 through the control module, so that the electromagnet 11 generates suction force on the pressure plate 15, and the pressure plate 15 is contacted with the clutch plate 12; the clutch plate 12 is always in a rotating state under the action of the second motor 6, and the pressure plate 15 is in contact with the clutch plate 12 and then drives the rotating shaft 14 to rotate, so that the sleeve 17 rotates; the sleeve 17 throws out the cutter 18 inside when rotating, and the cutter 18 clears away branches and leaves on the advancing route in the rotating process, thereby ensuring the normal movement of the measuring device and further ensuring the normal operation of measurement.

As a specific embodiment of the invention, two secondary blades 20 are rotatably mounted at one end of the cutter 18 away from the second motor 6, a limiting spring 21 is fixed between two adjacent secondary blades 20, and the secondary blades 20 are used for increasing the cutting range of the cutter 18; when the unmanned aerial vehicle is used, the cutting range formed after the cutter 18 is ejected is limited, and the unmanned aerial vehicle body 1 cannot be fully covered, so that branches and leaves can hook the unmanned aerial vehicle body 1; by arranging the secondary blades 20, the secondary blades 20 are thrown out of the sleeve 17 in the rotating process of the cutter 18, and simultaneously the secondary blades 20 are thrown out of the sleeve 17, so that two adjacent secondary blades 20 are unfolded under the action of the limiting springs 21; after two adjacent auxiliary blades 20 are unfolded, the cutting range of the cutter 18 is improved, so that obstacles in the advancing range of the measuring device are cleaned, and the normal measurement is ensured; after the cutting is finished, the cutter 18 enters the sleeve 17 under the action of the return spring 19, and meanwhile, two adjacent secondary blades 20 are attached together and enter the sleeve 17, so that the cutter 18 and the secondary blades 20 are simultaneously accommodated.

As a specific embodiment of the present invention, the secondary blade 20 is installed in an inclined manner, and the surface of the secondary blade 20 is provided with an elastic piece 22, and the elastic piece 22 is used for bouncing off the cut shade; when the unmanned aerial vehicle is used, the auxiliary blade 20 is obliquely installed, so that the auxiliary blade 20 can impact foreign matters when cutting is carried out, the cut foreign matters are bounced off, and the foreign matters are prevented from influencing the normal flight of the unmanned aerial vehicle body 1; meanwhile, the secondary blade 20 is obliquely arranged, so that the secondary blade 20 forms wind power, and further, cut foreign matters are blown away; the elastic piece 22 on the surface of the secondary blade 20 generates elastic force when contacting with foreign matters, and bounces off the cut foreign matters, thereby ensuring the normal movement of the measuring device.

As a specific embodiment of the invention, a round bar 23 is fixed at the top end of the unmanned aerial vehicle body 1, a third fan blade 24 is rotatably mounted at one end of the round bar 23, which is far away from the second motor 6, a fan housing 25 is fixed at one end of the round bar 23, which is far away from the second motor 6, a nozzle 26 is arranged on the side wall of the fan housing 25, the nozzle 26 is used for blowing away sundries cut by the cutter 18, a synchronous belt 27 is arranged between the rotating shaft 14 and the round bar 23, and the synchronous belt 27 is used for synchronously rotating the rotating shaft 14 and the round bar 23; when the unmanned aerial vehicle is used, foreign matters spatter when the branches and leaves are cut, and inevitably fall onto the fan blades of the unmanned aerial vehicle body 1, so that the unmanned aerial vehicle body 1 is unstable in flying; the synchronous belt 27 is arranged, so that the circular rod 23 rotates while the rotating shaft 14 rotates, and the third fan blade 24 generates wind power; wind power generated by the third fan blade 24 enters the spray head 26 from the fan cover 25 and is sprayed out from the spray head 26, so that splashed foreign matters are blown away by gas, the flying stability of the unmanned aerial vehicle body 1 is guaranteed, and the smooth measurement is guaranteed.

As a specific embodiment of the present invention, the nozzles 26 are located at two sides of the fan housing 25, the nozzles 26 are C-shaped, a cross-sectional area of one end of the nozzle 26 away from the fan housing 25 is larger than a cross-sectional area of one end of the nozzle 26 close to the fan housing 25, and the nozzle 26 and the fan housing 25 are installed in an inclined manner; when the unmanned aerial vehicle is used, the spray head 26 is of a C-shaped structure, so that gas blown out by the spray head 26 is arc-shaped, and a gas barrier layer is formed above the fan blades of the unmanned aerial vehicle body 1 by the gas, so that foreign matters are prevented from falling into the fan blades of the unmanned aerial vehicle body 1; the outlet opening of the spray head 26 is large, so that the gas sprayed by the spray head 26 is in a scattering state, the protection range of the gas is improved, and the protection effect of the spray head 26 is improved.

When the device is used, the existing homestead area measurement mode is that workers pull a ruler and measure by means of an instrument, measurement personnel can finish measurement only by walking around a house, and the homestead in the mountainous and water-by-water areas and the critical areas of terrain cannot be safely and effectively measured, so that the problem of area measurement exists, and the device solves the problem; through the arrangement of the measuring device, the unmanned aerial vehicle body 1 is controlled to work through the control module during measurement, so that the unmanned aerial vehicle body 1 drives the GPS locator 2 to lift off; meanwhile, the first motor 5 drives the first fan blade 7 to work to generate thrust, so that the measuring device generates transverse stable movement, and the two rollers 4 on one side of the unmanned aerial vehicle body 1 are in contact with the wall surface; the roller 4 is in contact with the wall surface, so that the unmanned aerial vehicle body 1 is perpendicular to the wall surface, the power of the first motor 5 is reduced after the roller 4 is in contact with the wall surface, and meanwhile, the second motor 6 drives the second fan blade 8 to rotate, so that the unmanned aerial vehicle body 1 generates forward power, and the measuring device can run linearly along the wall surface; the trend of the wall body is observed in the picture transmitted by the wide-angle camera 9, when the vertical wall surface is met, two rollers 4 on the other right-angle side of the unmanned aerial vehicle body 1 in a triangular structure are in contact with the wall surface, and meanwhile, a motor 5 rotates reversely to drive a fan blade 7 to generate reverse thrust, so that the measuring device moves along the vertical wall surface; the measuring device is recovered after the outer wall is wound for one circle, and the measurement is finished; the arrangement of the first motor 5 and the first fan blades 7 enables the unmanned aerial vehicle body 1 to be always attached to a wall, the moving track of the GPS locator 2 is the outer perimeter of the wall, the problem that the unmanned aerial vehicle deviates from a preset route due to wind power or broken lines of the wall is avoided, and therefore the measuring accuracy is guaranteed; according to the invention, the unmanned aerial vehicle is used for driving the measuring tool to move along the periphery of the wall body, so that the area measurement of the homestead in dangerous terrain is realized, the measurement precision is improved, and the personal safety of measuring personnel is ensured, thereby improving the measurement precision.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.