Height measuring equipment based on machine vision and crop plant height measuring method

Abstract

The invention provides height measuring equipment based on machine vision, which comprises a sleeve rod, a movable assembly arranged in the sleeve rod, a telescopic rod arranged in the sleeve rod, scale marks arranged on the surface of the telescopic rod, a specified block connected to the top end of the telescopic rod, a lifting assembly arranged between the sleeve rod and the movable assembly, and a connecting assembly arranged on the surface of the sleeve rod, the two mounting assemblies are respectively arranged on the surfaces of the two connecting assemblies, the two clamping assemblies are respectively arranged on one sides of the two mounting assemblies, one sides of the two clamping assemblies are respectively connected with the measuring instrument main body and the placing rack, and the mobile phone main body is arranged in the placing rack. According to the height measuring equipment based on machine vision, the connecting clamping ring with the two L-shaped connecting rods is arranged on the surface of the sleeve rod, and the two mounting assemblies, the two clamping assemblies and the placement frame are used in cooperation, so that the height measuring equipment can be replaced for use after the electric quantity in the measuring instrument main body or the mobile phone main body is used up.

Description

Technical Field

[0001] The invention relates to the field of crop plant height measurement, and in particular to a height measurement device based on machine vision. Background Art

[0002] Crops are various plants cultivated in agriculture, including two major categories: food crops and cash crops. The growth of crops is inseparable from scientific and technological production technologies, as well as mechanical equipment manufactured by new industries that can assist agricultural production.

[0003] At present, when crops are planted for R&D experiments or large-scale planting, the plant height is measured regularly during the crop growth cycle. When measuring the plant height of crops, machine vision height measuring equipment is used to assist the operation. However, the current machine vision height measuring equipment consists of a telescopic rod with a scale and a plant height measuring instrument body.

[0004] Current crop height measurement equipment is assisted by a measuring instrument during use, but current plant height measuring instruments are used by charging. After long-term use, when the instrument runs out of power, it is no longer possible to continue measuring the plant height of crops.

[0005] Therefore, it is necessary to provide a height measurement device based on machine vision to solve the above technical problems. Summary of the invention

[0006] The present invention provides a height measuring device based on machine vision, which solves the problem that the existing plant height measuring instrument can be used by charging, but after long-term use, when the power of the instrument is consumed and the power is out of power, the plant height measurement of crops cannot be continued.

[0007] In order to solve the above technical problems, the present invention provides a height measurement device based on machine vision, comprising: A sleeve rod, wherein a movable component is arranged inside the sleeve rod; A telescopic rod, the telescopic rod is arranged inside the sleeve rod, a scale line is opened on the surface of the telescopic rod, and a designated block is connected to the top of the telescopic rod; A lifting assembly, the lifting assembly being arranged between the sleeve rod and the movable assembly; A connecting assembly, the connecting assembly is arranged on the surface of the sleeve rod, the connecting assembly comprises a connecting snap ring, and an L-shaped connecting rod is symmetrically connected to the surface of the connecting snap ring; A mounting assembly, wherein the number of the mounting assemblies is two, and the two mounting assemblies are respectively arranged on the surfaces of the two L-shaped connecting rods; A snap-in assembly, wherein the number of the snap-in assemblies is two, and the two snap-in assemblies are respectively arranged on one side of the two mounting assemblies, and the snap-in assembly comprises a circular rod, and the left and right sides of the circular rod surface are connected with snap-in rings, and a snap-in sleeve is connected between the two snap-in rings through a connecting block, and a snap-in block is arranged inside the snap-in sleeve, and one side of the two snap-in blocks is respectively connected with a measuring instrument body and a placement rack, and a mobile phone body is arranged inside the placement rack.

[0008] Preferably, the movable assembly comprises a circular movable block, one side of the circular movable block is connected to a movable block, and a movable groove adapted to the movable block is provided on the surface of the sleeve rod.

[0009] Preferably, the lifting assembly includes a positioning frame, a gear is arranged inside the positioning frame, a toothed plate is meshed on one side of the gear, one side of the toothed plate is connected to one end of the movable block, and a handle is arranged between the positioning frame and the gear.

[0010] Preferably, the mounting assembly comprises a movable sleeve, and the movable sleeve surface has clamping grooves on both left and right sides, and clamping blocks are arranged inside the two clamping grooves, and one side of the clamping block is connected to an L-shaped circular rod.

[0011] Preferably, a fixing bolt is arranged inside the movable sleeve, and a plurality of fixing holes matching with the fixing bolt are opened on the surface of the L-shaped connecting rod.

[0012] Preferably, the bottom end of the sleeve rod is connected with a ground plug.

[0013] Preferably, a storage assembly is provided on the surface of the sleeve rod, and the storage assembly includes a sliding sleeve, and rectangular blocks are connected to the left and right sides of the sliding sleeve surface, and the bottoms of the two rectangular blocks are connected to circular extension rods, and the bottoms of the two circular extension rods are connected to extension plates, and a storage box is connected between the two extension plates.

[0014] Preferably, bolts are arranged inside the sliding sleeve, and threaded holes matching the bolts are opened on the surface of the sleeve rod.

[0015] Preferably, a storage assembly is provided at the bottom of the storage box, the storage assembly includes a storage box, a movable plate is provided on the surface of the storage box, installation connection blocks are connected to the left and right sides of the storage box, and a threaded connection bolt is provided between the installation connection block and the storage box.

[0016] A method for measuring the height of crops using a height measuring device based on machine vision, comprising the following steps: S1. When measuring the plant height of crops, firstly, the measuring instrument body with the clamping block and the mobile phone body with the clamping block are connected to the two clamping sleeves respectively. After the measuring instrument body and the mobile phone body are installed, the whole device is sleeved between the surfaces of the two L-shaped connecting rods through the two movable sleeves. After the whole device is sleeved on the surface of the L-shaped connecting rod through the movable sleeve, the upper and lower positions of the whole device are adjusted. After the position between the whole device and the sleeve rod is adjusted, the fixing bolt is used to pass through the movable sleeve and connected to the L-shaped connecting rod; S2. After the measuring instrument body and the mobile phone body are installed on the surface of the sleeve rod, the whole device is inserted into the designated place of the field through the ground plug. After the whole device is fixed in the field, the gear is driven to rotate by the handle. When the gear rotates, the tooth plate is driven to move upward. When the tooth plate moves upward, the movable block is driven to move inside the movable groove. When the movable block moves inside the movable groove, the circular movable block is driven to move upward inside the sleeve rod. When the circular movable block moves upward inside the sleeve rod, the telescopic rod with scale lines and designated blocks is driven to move upward. When the telescopic rod pushes the designated block to move to the top of the crop and contacts it, the scale line value at the connection position of the telescopic rod and the sleeve rod can be photographed by the measuring instrument body and transmitted to the system for measurement; S3. When the power inside the measuring instrument is used up, the mobile phone continues to operate the tool instead of the measuring instrument.

[0017] Compared with the related art, the height measurement device based on machine vision provided by the present invention has the following beneficial effects: The present invention provides a height measuring device based on machine vision. A connecting ring with two L-shaped connecting rods, two mounting components, two clamping components and a placement frame are arranged on the surface of a sleeve rod for use in coordination, so that the measuring instrument body or a mobile phone body can be replaced and used after the power inside the body is used up. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic structural diagram of a first embodiment of a height measurement device based on machine vision provided by the present invention; Figure 2 for Figure 1 An enlarged schematic diagram of part A is shown; Figure 3 for Figure 1 An enlarged schematic diagram of part B is shown; Figure 4 for Figure 1 An isometric structural diagram of the entire device shown; Figure 5 for Figure 4 An enlarged schematic diagram of part C is shown; Figure 6 for Figure 4 An enlarged schematic diagram of the D portion shown; Figure 7 for Figure 4 An enlarged schematic diagram of part E is shown; Figure 8 for Figure 1 A schematic diagram of the overall three-dimensional structure of the device shown; Fig. 9 A schematic structural diagram of a second embodiment of a height measurement device based on machine vision provided by the present invention; Fig.10 for Fig. 9 The enlarged schematic diagram of the F part is shown; Fig.11 This is a schematic structural diagram of a third embodiment of a height measurement device based on machine vision provided by the present invention.

[0019] Numbers in the figure: 1, sleeve rod; 2. movable assembly; 21. circular movable block; 22. movable block; 23. movable slot; 3. Lifting assembly; 31. Positioning frame; 32. Gear; 33. Tooth plate; 34. Handle; 4. Telescopic rod; 5. Scale line; 6. Designated block; 7. Connecting assembly; 71. Connecting clamp; 72. L-shaped connecting rod; 8. Installation assembly; 81. Movable sleeve; 82. Snap-fit ​​groove; 83. Snap-fit ​​block; 84. L-shaped round rod; 9. Fixed bolt; 10. Snap-fit ​​assembly; 101. round rod; 102. snap-fit ​​ring; 103. snap-fit ​​sleeve; 104. snap-fit ​​block; 11. Measuring instrument body; 12. Placement stand; 13. Mobile phone body; 14. Ground plug; 15. Storage assembly; 151. Sliding sleeve; 152. Rectangular block; 153. Circular extension rod; 154. Extension plate; 155. Storage box; 156. Bolt; 16. Storage assembly; 161. Storage box; 162. Movable plate; 163. Mounting connection block; 164. Threaded connection bolt; 17. Disassembly assembly; 171. Disassembly sleeve; 172. Disassembly block; 173. Round fixing block. DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with the accompanying drawings and implementation modes. Example

[0021] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4, Figure 5 , Figure 6 , Figure 7 and Figure 8 ,in, Figure 1 A schematic structural diagram of a first embodiment of a height measurement device based on machine vision provided by the present invention; Figure 2 for Figure 1 An enlarged schematic diagram of part A is shown; Figure 3 for Figure 1 An enlarged schematic diagram of part B is shown; Figure 4 for Figure 1 An isometric structural diagram of the entire device shown; Figure 5 for Figure 4 An enlarged schematic diagram of part C is shown; Figure 6 for Figure 4 An enlarged schematic diagram of the D portion shown; Figure 7 for Figure 4 An enlarged schematic diagram of part E is shown; Figure 8 for Figure 1 A height measurement device based on machine vision, comprising: A sleeve rod 1, wherein a movable component 2 is arranged inside the sleeve rod 1; A telescopic rod 4, wherein the telescopic rod 4 is arranged inside the sleeve rod 1, a scale line 5 is provided on the surface of the telescopic rod 4, and a designated block 6 is connected to the top of the telescopic rod 4; A lifting assembly 3, wherein the lifting assembly 3 is arranged between the sleeve rod 1 and the movable assembly 2; A connecting assembly 7, wherein the connecting assembly 7 is arranged on the surface of the sleeve rod 1, and the connecting assembly 7 comprises a connecting snap ring 71, and an L-shaped connecting rod 72 is symmetrically connected to the surface of the connecting snap ring 71; An installation component 8, the number of the installation components 8 is two, and the two installation components 8 are respectively arranged on the surfaces of the two L-shaped connecting rods 72; A snap-on assembly 10, wherein the number of the snap-on assemblies 10 is two, and the two snap-on assemblies 10 are respectively arranged on one side of the two mounting assemblies 8, and the snap-on assembly 10 comprises a circular rod 101, and the left and right sides of the surface of the circular rod 101 are connected with snap-on rings 102, and a snap-on sleeve 103 is connected between the two snap-on rings 102 via a connecting block, and a snap-on block 104 is arranged inside the snap-on sleeve 103, and one side of the two snap-on blocks 104 is respectively connected with a measuring instrument body 11 and a placement rack 12, and a mobile phone body 13 is arranged inside the placement rack 12.

[0022] One side of the connecting clamp ring 71 is open, which is convenient for clamping on the surface of the sleeve rod 1. The movable sleeve 81 is sleeved on the surface of the L-shaped connecting rod 72. The use of the movable sleeve 81 and the L-shaped connecting rod 72 is convenient for connecting the entire device to the sleeve rod 1. The use of the clamping groove 82 and the clamping block 83 is convenient for installing and disassembling the L-shaped circular rod 4 and the movable sleeve 81. The shapes of the clamping groove 82 and the clamping block 82 are adapted to be T-shaped. The use of the fixing bolt 9 is convenient for connecting the movable sleeve 81 and the L-shaped connecting rod 72. The circular movable block 21 is arranged inside the sleeve rod 1. The movable block 22 is used to move the circular movable block 21 through the tooth plate 23. The positioning frame 31 is installed on the surface of the sleeve rod 1. One side of the gear 32 is rotatably connected to one side of the inner wall of the positioning frame 31 through a rotating shaft. One side of the other side of the gear 32 is connected to one end of the handle 34. A bearing is provided at the connection between the handle 34 and the positioning frame 31.

[0023] The movable assembly 2 comprises a circular movable block 21 , one side of the circular movable block 21 is connected to a movable block 22 , and a movable groove 23 adapted to the movable block 22 is formed on the surface of the sleeve rod 1 .

[0024] The lifting assembly 3 includes a positioning frame 31, a gear 32 is arranged inside the positioning frame 31, a tooth plate 33 is meshed on one side of the gear 32, one side of the tooth plate 33 is connected to one end of the movable block 22, and a handle 34 is arranged between the positioning frame 31 and the gear 32.

[0025] The mounting assembly 8 includes a movable sleeve 81 , and the movable sleeve 81 has a clamping groove 82 on both sides thereof. A clamping block 83 is disposed inside the two clamping grooves 82 , and one side of the clamping block 83 is connected to an L-shaped circular rod 84 .

[0026] A fixing bolt 9 is disposed inside the movable sleeve 81 , and a plurality of fixing holes matching with the fixing bolt 9 are formed on the surface of the L-shaped connecting rod 72 .

[0027] The bottom end of the sleeve rod 1 is connected with a ground plug 14 .

[0028] A method for measuring the height of crops using a height measuring device based on machine vision, comprising the following steps: S1. When measuring the plant height of crops, firstly, the measuring instrument body 11 with the clamping block 104 and the mobile phone body 13 with the clamping block 104 are connected to the two clamping sleeves 103 respectively. After the measuring instrument body 11 and the mobile phone body 13 are installed, the whole device is sleeved between the surfaces of the two L-shaped connecting rods 72 through the two movable sleeves 81. After the whole device is sleeved on the surface of the L-shaped connecting rod 72 through the movable sleeve 81, the upper and lower positions of the whole device are adjusted. After the position between the whole device and the sleeve rod 1 is adjusted, the fixing bolt 9 is used to pass through the movable sleeve 81 and connected to the L-shaped connecting rod 72; S2. After the measuring instrument body 11 and the mobile phone body 13 are installed on the surface of the sleeve rod 1, the whole device is inserted into the designated place of the field through the ground plug 14. After the whole device is fixed in the field, the gear 32 is driven to rotate by the handle 34. When the gear 32 rotates, the tooth plate 33 is driven to move upward. When the tooth plate 33 moves upward, the movable block 22 is driven to move inside the movable groove 23. When the movable block 22 moves inside the movable groove 23, the circular movable block 21 is driven to move upward inside the sleeve rod 1. When the circular movable block 21 moves upward inside the sleeve rod 1, the telescopic rod 4 with the scale line 5 and the designated block 6 is driven to move upward. When the telescopic rod 4 pushes the designated block 6 to move to the top of the crop and contact, the value of the scale line 5 at the connection position of the telescopic rod 4 and the sleeve rod 1 can be photographed by the measuring instrument body 11 and transmitted to the system for measurement; S3. When the power in the measuring instrument body 11 is used up, the mobile phone body 13 continues to replace the measuring instrument body 11 for operation.

[0029] Compared with the related art, the height measurement device based on machine vision provided by the present invention has the following beneficial effects: The present invention provides a height measuring device based on machine vision. A connecting ring 71 with two L-shaped connecting rods 72, two mounting components 8, two clamping components 10 and a placement rack 12 are arranged on the surface of a sleeve rod 1 for use in coordination, so that a measuring instrument body 11 or a mobile phone body 13 can be replaced and used after the power inside the measuring instrument body 11 or the mobile phone body 13 is used up. Example

[0030] Please refer to Fig. 9 and Fig.10 Based on the height measurement device based on machine vision provided in the first embodiment of the present application, the second embodiment of the present application proposes another height measurement device based on machine vision. The second embodiment is only a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the independent implementation of the first embodiment.

[0031] Specifically, the second embodiment of the present application provides a height measuring device based on machine vision, which is different in that, in a height measuring device based on machine vision, a storage component 15 is provided on the surface of the sleeve rod 1, and the storage component 15 includes a sliding sleeve 151, and rectangular blocks 152 are connected to the left and right sides of the surface of the sliding sleeve 151, and circular extension rods 153 are connected to the bottoms of the two rectangular blocks 152, and extension plates 154 are connected to the bottoms of the two circular extension rods 153, and a storage box 155 is connected between the two extension plates 154.

[0032] The sliding sleeve 151 is sleeved on the surface of the sleeve rod 1, and the position of the entire device can be adjusted by moving up and down on the surface of the sleeve rod 1. The circular extension rod 153 and the extension plate 154 can drive the storage box 155 to move on the surface of the sleeve rod 1. The use of the bolt 156 facilitates the threaded connection and fixation between the entire device and the sleeve rod 1. The storage box 161 and the movable plate 162 are hinged by a hinge, and a corresponding lock is provided between the movable plate 162 and the storage box 161. The installation connection block 163 and the threaded connection bolt 164 facilitate the installation of the storage box 161 at the bottom of the storage box 155.

[0033] Bolts 156 are disposed inside the sliding sleeve 151 , and threaded holes matching the bolts 156 are formed on the surface of the sleeve rod 1 .

[0034] A storage assembly 16 is provided at the bottom of the storage box 155, and the storage assembly 16 includes a storage box 161. A movable plate 162 is provided on the surface of the storage box 161. The left and right sides of the storage box 161 are connected with installation connecting blocks 163. A threaded connecting bolt 164 is provided between the installation connecting block 163 and the storage box 155.

[0035] The working principle of a height measurement device based on machine vision provided by the present invention is as follows: During use, when using a power bank to charge the measuring instrument body 11 or the mobile phone body 13, first place the power bank inside the storage box 155, and then pull the sliding sleeve 151 to move on the surface of the sleeve rod 1 to drive the entire device to adjust the up and down position. When the entire device is moved to the appropriate position, use the bolt 156 to pass through the sliding sleeve 151 and threadedly connect it to the sleeve rod 1, then open the movable plate 162 on the surface of the storage box 161, then take out the connecting wire inside the storage box 161, and connect the power bank to the measuring instrument body 11 or the mobile phone body 13 for use.

[0036] Compared with the related art, the height measurement device based on machine vision provided by the present invention has the following beneficial effects: The present invention provides a height measuring device based on machine vision. A storage component 15 and a storage component 16 are arranged on the surface of a sleeve rod 1 so that a power bank and the tools used can be stored when a measuring instrument body 11 and a mobile phone body 13 are used, and the device is also convenient to carry and use. Example

[0037] Please refer to Fig.11 Based on the height measurement device based on machine vision provided in the first embodiment of the present application, the third embodiment of the present application proposes another height measurement device based on machine vision. The third embodiment is only a preferred embodiment of the first embodiment, and the implementation of the third embodiment will not affect the independent implementation of the first embodiment.

[0038] Specifically, the third embodiment of the present application provides a height measuring device based on machine vision, which is different in that a disassembly assembly 17 is provided between the sleeve rod 1 and the ground plug 14, and the disassembly assembly 17 includes a disassembly sleeve 171, and a disassembly block 172 is provided inside the disassembly sleeve 171, and the bottom end of the disassembly block 172 is connected to a circular fixing block 173, and the bottom end of the circular fixing block 173 is connected to the ground plug 14.

[0039] The disassembly sleeve 171 is connected to the bottom end of the sleeve rod 1 , and the disassembly sleeve 171 and the disassembly block 172 can be fixed by plugging or threading. Matching threads are provided on the inner wall of the disassembly sleeve 171 and the surface of the disassembly block 172 .

[0040] The working principle of a height measurement device based on machine vision provided by the present invention is as follows: When the ground plug 14 is to be disassembled, the disassembly block 172 is driven to separate from the disassembly sleeve 171 at the bottom end of the sleeve rod 1 by pulling the ground plug 14 .

[0041] Compared with the related art, the height measurement device based on machine vision provided by the present invention has the following beneficial effects: The present invention provides a height measuring device based on machine vision. A disassembly sleeve 171 and a disassembly block 172 with a circular fixing block 173 are arranged between the sleeve rod 1 and the ground plug 14 to facilitate the disassembly, separation and carrying of the ground plug 14 and the sleeve rod 1 when the entire device is carried.

[0042] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A height measurement device based on machine vision, characterized in that: include: A sleeve rod, wherein a movable component is arranged inside the sleeve rod; A telescopic rod, the telescopic rod is arranged inside the sleeve rod, a scale line is opened on the surface of the telescopic rod, and a designated block is connected to the top of the telescopic rod; A lifting assembly, the lifting assembly being arranged between the sleeve rod and the movable assembly; A connecting assembly, the connecting assembly is arranged on the surface of the sleeve rod, the connecting assembly comprises a connecting snap ring, and an L-shaped connecting rod is symmetrically connected to the surface of the connecting snap ring; A mounting assembly, wherein the number of the mounting assemblies is two, and the two mounting assemblies are respectively arranged on the surfaces of the two L-shaped connecting rods; A snap-in assembly, wherein the number of the snap-in assemblies is two, and the two snap-in assemblies are respectively arranged on one side of the two mounting assemblies, and the snap-in assembly comprises a circular rod, and the left and right sides of the circular rod surface are connected with snap-in rings, and a snap-in sleeve is connected between the two snap-in rings through a connecting block, and a snap-in block is arranged inside the snap-in sleeve, and one side of the two snap-in blocks is respectively connected with a measuring instrument body and a placement rack, and a mobile phone body is arranged inside the placement rack.

2. The machine vision-based height measurement device according to claim 1, characterized in that: The movable assembly comprises a circular movable block, one side of the circular movable block is connected with a movable block, and the surface of the sleeve rod is provided with a movable groove adapted to the movable block.

3. The machine vision-based height measurement device according to claim 2, characterized in that: The lifting assembly comprises a positioning frame, a gear is arranged inside the positioning frame, a tooth plate is meshed on one side of the gear, one side of the tooth plate is connected to one end of the movable block, and a handle is arranged between the positioning frame and the gear.

4. The machine vision-based height measurement device according to claim 1, characterized in that: The installation assembly comprises a movable sleeve, and the left and right sides of the movable sleeve surface are provided with clamping grooves, and the insides of the two clamping grooves are provided with clamping blocks, and one side of the clamping block is connected with an L-shaped round rod.

5. The machine vision-based height measurement device according to claim 4, characterized in that: A fixing bolt is arranged inside the movable sleeve, and a plurality of fixing holes matching with the fixing bolt are opened on the surface of the L-shaped connecting rod.

6. The machine vision-based height measurement device according to claim 1, characterized in that: The bottom end of the sleeve rod is connected with a ground plug.

7. The machine vision-based height measurement device according to claim 1, characterized in that: A storage component is provided on the surface of the sleeve rod, and the storage component includes a sliding sleeve, and rectangular blocks are connected to the left and right sides of the sliding sleeve surface, and the bottoms of the two rectangular blocks are connected to circular extension rods, and the bottoms of the two circular extension rods are connected to extension plates, and a storage box is connected between the two extension plates.

8. The machine vision-based height measurement device according to claim 7, characterized in that: Bolts are arranged inside the sliding sleeve, and threaded holes matching the bolts are opened on the surface of the sleeve rod.

9. The machine vision-based height measurement device according to claim 7, characterized in that: A storage assembly is provided at the bottom of the storage box, and the storage assembly includes a storage box. A movable plate is provided on the surface of the storage box. Both left and right sides of the storage box are connected with mounting connection blocks, and a threaded connection bolt is provided between the mounting connection block and the storage box.

10. A method for measuring plant height of crops using a height measuring device based on machine vision, characterized in that: The following steps are involved: S1. When measuring the plant height of crops, firstly, the measuring instrument body with the clamping block and the mobile phone body with the clamping block are connected to the two clamping sleeves respectively. After the measuring instrument body and the mobile phone body are installed, the whole device is sleeved between the surfaces of the two L-shaped connecting rods through the two movable sleeves. After the whole device is sleeved on the surface of the L-shaped connecting rod through the movable sleeve, the upper and lower positions of the whole device are adjusted. After the position between the whole device and the sleeve rod is adjusted, the fixing bolt is used to pass through the movable sleeve and connected to the L-shaped connecting rod; S2. After the measuring instrument body and the mobile phone body are installed on the surface of the sleeve rod, the whole device is inserted into the designated place of the field through the ground plug. After the whole device is fixed in the field, the gear is driven to rotate by the handle. When the gear rotates, the tooth plate is driven to move upward. When the tooth plate moves upward, the movable block is driven to move inside the movable groove. When the movable block moves inside the movable groove, the circular movable block is driven to move upward inside the sleeve rod. When the circular movable block moves upward inside the sleeve rod, the telescopic rod with scale lines and designated blocks is driven to move upward. When the telescopic rod pushes the designated block to move to the top of the crop and contacts it, the scale line value at the connection position of the telescopic rod and the sleeve rod can be photographed by the measuring instrument body and transmitted to the system for measurement; S3. When the power inside the measuring instrument is used up, the mobile phone continues to operate the tool instead of the measuring instrument.

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