A real estate surveying instrument

Abstract

The application discloses a real estate surveying and measuring instrument, which comprises a measuring instrument, a bearing disc, two groups of wristbands, a second support, a first support, a solid metal head, an inner layer, an outer layer, a sliding gap, a clamping structure and a plurality of locking assemblies.

Description

Technical Field

[0001] This invention relates to the field of real estate surveying, and more particularly to a real estate surveying and measuring instrument. Background Technology

[0002] Forest rights refer to the ownership, use rights, management rights, or a combination of rights and interests enjoyed by a certain social entity over a certain forest, forest land, and trees. Currently, my country is gradually promoting the registration of forest rights and real estate. The investigation of forest rights and real estate is a very large-scale task, especially in the uneven region of Guangxi, which requires forestry workers to travel extensively to collect information such as the number of trees, tree species, tree height, diameter at breast height, age, location, and elevation.

[0003] Currently used measuring instruments are all integrated modular structures, available in both handheld and tripod-supported forms. Handheld instruments are convenient to carry, but require maintaining the instrument's position during measurement, making testing inconvenient. Tripod-supported instruments, such as the LMD150 forestry survey instrument, require the tripod to be carried. When surveying in uneven terrain, carrying the equipment is very physically demanding, greatly increasing the difficulty of forest tenure and real estate surveys. Summary of the Invention

[0004] In order to overcome the shortcomings and deficiencies of the prior art, the purpose of this invention is to provide a real estate survey and measurement instrument.

[0005] The technical solution of this invention is a real estate survey and measurement instrument, comprising: Measuring instrument; A support plate, which is connected to the measuring instrument via two sets of wrist straps; The second support has a bearing head at its top that mates with the bearing plate; The first bracket is slidably connected to the second bracket, and the bottom end of the first bracket is threaded with a solid metal head; The second support has an inner layer and an outer layer, and a sliding gap is formed between the inner layer and the outer layer. The first support is located inside the sliding gap. The top of the first bracket is provided with a snap-fit ​​structure, and a plurality of locking components are provided equidistantly on the inner side of the inner layer along the axial direction of the second bracket. The outer side of the second bracket is fitted with a magnetic sleeve.

[0006] Optionally, the locking component includes: The cylinder is arranged horizontally, with both ends of the cylinder fixedly connected to the inner sidewall of the inner layer, and the inner layer is provided with an insertion port corresponding to the port of the cylinder. An embedded cylinder, which is fixedly connected to the inside of the cylinder body and located in the middle section of the cylinder body; The pop-out component is located inside the cylinder. There are two pop-out components, located at both ends of the embedded cylinder, and the two pop-out components are connected by an elastic band. The pop-out element (45) is made of a material that can be magnetically attracted.

[0007] Optionally, the snap-fit ​​structure includes: The first bracket has a connection port at its top and a limiting component that can slide elastically into the connection port.

[0008] Optionally, an annular groove is provided on the inner side of the first bracket, a fixing block is fixedly connected inside the annular groove, an elastic block is fixedly connected to one side of the fixing block, a limiting member is connected to the end of the elastic block away from the fixing block, and a bevel is provided on the top of the limiting member.

[0009] Optionally, the magnetic sleeve includes a rubber sleeve and an annular magnetic block embedded inside the rubber sleeve.

[0010] Optionally, the side of the first bracket is provided with a protrusion along the length direction, and the side of the sliding gap is provided with a sliding opening corresponding to the protrusion.

[0011] Optionally, the carrier head includes: The carrier plate is fixed to the inside of the second bracket; An elastic membrane is fixed inside the second support and is located above the carrier plate.

[0012] Optionally, the top center of the carrier plate has a positioning protrusion, and the bottom of the carrier plate has a mating opening corresponding to the positioning protrusion.

[0013] Optionally, the bottom of the first bracket has a threaded opening, the top of the solid metal head is provided with a threaded post, and the bottom of the solid metal head is an arc-shaped protrusion.

[0014] Optionally, a handle is provided on the side and near the top of the second bracket.

[0015] Furthermore, the measuring instrument includes a GNSS module, an IMU module, and a trigger switch; A GNSS module, which is electrically connected to the controller of the measuring instrument; An IMU module is disposed in a first or second bracket and is electrically connected to the controller of the measuring instrument. A trigger switch is mounted on a solid metal head, with its trigger point located on the lower surface of the solid metal head. The trigger switch is electrically connected to the controller of the measuring instrument.

[0016] Furthermore, the positioning method of the measuring instrument is as follows: S01. Acceleration and angular velocity information measured by the IMU module; S02. Calculate the speed of the rod-shaped object composed of the first support and the second support, and determine whether the rod-shaped object is in the stationary range by the triggering state of the trigger switch. If the trigger switch is triggered, the rod-shaped object is determined to be in the zero speed range; otherwise, the rod-shaped object is determined to be in the non-stationary range. S03. If the rod-shaped object composed of the first support and the second support is in the stationary range, the ZUPT algorithm is used to correct the position and attitude information of the rod-shaped object composed of the first support and the second support. S04. If the rod-shaped object formed by the first and second supports is in a non-static region, no correction is made, and the original position and attitude information output by the IMU module is used directly.

[0017] The beneficial effects of this invention are: compared with the prior art, 1) Based on experience in investigating forest tenure real estate data in uneven areas, this invention designs a wrist-worn measuring instrument with a telescopic and adjustable support structure. When climbing mountains, the support can be used for mountaineering (acting in the same way as a trekking pole) to help investigators reach their destination. During testing, the support is erected with the support plate pressed on top of the support head to maintain the measuring posture and facilitate the measurement work. Compared with existing handheld and support-based devices, this invention has the advantages of being easy to carry and easy to measure. 2) The present invention further improves the connection structure of the bracket by using a magnetic sleeve to drive the locking component to change its state, so that the snap-fit ​​structure cooperates with the locking component to lock the sliding state of the first bracket and the second bracket, making it convenient for users to adjust the overall length of the bracket according to their needs, and making it very convenient to use. Attached Figure Description

[0018] Figure 1 This is a perspective view of the present invention; Figure 2 This is a front view of the present invention; Figure 3 This is a three-dimensional view of the first support frame; Figure 4 for Figure 3 A partial view at point C; Figure 5 This is a partial cross-sectional view of the present invention; Figure 6 for Figure 5 A partial view at point A in the middle; Figure 7 for Figure 5 A partial view at point B in the middle; Figure 8This is a circuit connection block diagram of the present invention.

[0019] Legend: 1. First bracket; 11. Connection port; 12. Annular groove; 13. Fixing block; 14. Elastic block; 15. Limiting component; 16. Angled opening; 2. Second bracket; 21. Inner layer; 22. Outer layer; 23. Sliding gap; 3. Magnetic sleeve; 31. Rubber sleeve; 32. Annular magnetic block; 4. Locking assembly; 41. Cylinder body; 42. Insertion port; 43. Embedded cylinder; 44. Elastic band; 45. Pop-out component; 5. Handle; 6. Bearing head; 61. Carrier plate body; 62. Elastic membrane; 7. Bearing plate; 71. Mating port; 8. Measuring instrument; 9. Wrist strap; 10. Solid metal head; 101. Trigger switch; 102. IMU module; 103. GNSS module; 104. Controller. Detailed Implementation

[0020] The invention will be further described below with reference to the accompanying drawings and specific embodiments: refer to Figures 1 to 8 A real estate surveying and measuring instrument includes: a measuring instrument 8, a support plate 7, and a bracket; the support plate 7 and the measuring instrument 8 are connected by two sets of wrist straps 9, which are elastic and can be worn on the user's wrist for easy carrying. Here, the measuring instrument 8 is used to record information such as the number of trees, tree species, tree type, tree height, diameter at breast height, age, location, and elevation.

[0021] The support includes a first support 1 and a second support 2. The first support 1 and the second support 2 are slidably connected, and the structure between the first support 1 and the second support 2 is slidable, so that the length of the support can be adjusted according to the usage requirements.

[0022] One preferred use of the support is as a trekking pole to assist investigators in walking on uneven ground.

[0023] The top of the second bracket 2 is provided with a bearing head 6 that cooperates with the bearing plate 7. When measuring, the bracket is kept vertical, and the user aligns the bearing plate 7 with the bearing head 6 and applies a certain downward pressure to maintain the stability of the measuring instrument and facilitate the measurement.

[0024] The bottom end of the first bracket 1 is threaded with a solid metal head 10. The solid metal head 10 is the part that directly contacts the ground, making it easy to support on uneven surfaces. The detachable threaded structure makes it easy to replace the solid metal head 10.

[0025] The second support 2 has an inner layer 21 and an outer layer 22, with a sliding gap 23 formed between the inner layer 21 and the outer layer 22. The first support 1 is located inside the sliding gap 23. The tops of the inner layer 21 and the outer layer 22 are connected into an integral structure. The inner layer 21, the outer layer 22, and the first support 1 form a three-layer structure with higher structural strength and greater practicality.

[0026] The top of the first bracket 1 is provided with a snap-fit ​​structure. Several locking components 4 are provided at equal intervals on the inner side of the inner layer 21 and along the axial direction of the second bracket 2. A magnetic sleeve 3 is provided on the outer side of the second bracket 2. The magnetic sleeve 3, the snap-fit ​​structure, and the locking components 4 form an adjustable locking structure, which makes it easy for the user to adjust the sliding of the first bracket 1 and the second bracket 2 and fix the first bracket 1 and the second bracket 2 in a suitable position.

[0027] Reference Appendix Figures 5-6 This embodiment provides a specific locking component 4, which includes: The cylinder 41 is arranged horizontally, and both ends of the cylinder 41 are fixedly connected to the inner sidewall of the inner layer 21. The inner layer 21 is provided with an insertion port 42 corresponding to the port of the cylinder 41. An embedded cylinder 43 is fixedly connected inside the cylinder body 41 and is located in the middle section of the cylinder body 41; Pop-out piece 45 is located inside the cylinder 41. There are two pop-out pieces 45, located at both ends of the embedded cylinder 43 respectively, and the two pop-out pieces 45 are connected by an elastic band 44. The pop-out element 45 is made of a material that can be magnetically attracted.

[0028] The user adjusts the position of the magnetic sleeve 3 by sliding it. When it is located outside one of the locking components 4, it attracts the pop-out piece 45, so that part of the pop-out piece 45 passes through the insertion port 42 and extends into the sliding gap 23. The user manually adjusts the sliding of the first bracket 1 and the second bracket 2. When the locking structure is locked with the pop-out piece 45, the first bracket 1 and the second bracket 2 can be locked.

[0029] Reference Appendix Figures 3-4 This embodiment provides a specific snap-fit ​​structure, which includes: The first bracket 1 has a connection port 11 at its top and a limiting member 15 that can be elastically slid into the connection port 11.

[0030] The inner side of the first bracket 1 is provided with an annular groove 12, and a fixing block 13 is fixedly connected inside the annular groove 12. An elastic block 14 is fixedly connected to one side of the fixing block 13. A limiting member 15 is connected to the end of the elastic block 14 away from the fixing block 13. A slanted opening 16 is provided on the top of the limiting member 15.

[0031] The limiting member 15 and the connecting port 11 form a one-way sliding structure (along the sliding direction of the first bracket 1 and the second bracket 2). When it slides into the locking component 4 where the pop-out member 45 is in the pop-out state, the pop-out member 45 can slide into the interior of the connecting port 11 to achieve the locking state. After that, the first bracket 1 and the second bracket 2 can no longer slide.

[0032] Reference Appendix Figures 5-6 The magnetic sleeve 3 includes a rubber sleeve 31 and an annular magnetic block 32 embedded inside the rubber sleeve.

[0033] The rubber sleeve 31, made of rubber material, can slide easily on the second bracket 2. After sliding to a suitable position, it can be fixed in position by relying on its elasticity, so that the magnetic sleeve 3 can stop at any position.

[0034] The ring-shaped magnetic block 32 is used to attract the pop-out part 45 of the locking component 4 inside it to slide toward the sliding gap 23.

[0035] The first bracket 1 has a protrusion along its length on its side, and the sliding gap 23 has a sliding opening corresponding to the protrusion on its side, so that the first bracket 1 and the sliding gap 23 can slide but cannot rotate.

[0036] Reference Appendix Figures 5-7 The carrier head 6 includes: Carrier body 61, carrier body 61 is fixed inside the second bracket 2; The elastic membrane 62 is fixed inside the second support 2 and is located above the carrier plate 61.

[0037] The elastic membrane 62 can cover the carrier plate 61 to prevent dust from entering the side recess of the carrier plate 61, and facilitate the installation of the carrier plate 7.

[0038] Specifically, the top center of the carrier plate 61 has a positioning protrusion, and the bottom of the carrier plate 7 is provided with a mating port 71 corresponding to the positioning protrusion, which can easily press the carrier plate 7 onto the top of the carrier plate 61.

[0039] The bottom of the first bracket 1 has a threaded opening, the top of the solid metal head 10 is provided with a threaded post, and the bottom of the solid metal head 10 is an arc-shaped protrusion.

[0040] The second bracket 2 has a handle 5 on its side and near the top, which makes it easy for the user to grip the bracket.

[0041] Working principle: Forestry surveyors wear the measuring instrument 8 and the support plate 7 on their wrists. The support is used as a separate tool. When measuring, the support plate 7 is pressed on the elastic membrane 62 and a certain downward pressure is applied to deform the elastic membrane 62 and press it tightly and stably on the support plate body 61. The downward force can also keep the support in a vertical position, keep the measuring instrument 8 in position, and complete the measurement work.

[0042] When adjusting the length of the bracket, first slide the magnetic sleeve 3 to release the locking component 4, which was originally locked. Under the action of the elastic band 44, the two pop-out pieces 45 move towards the center at the same time and lock the locking component 4 to be fixed. That is, the annular magnetic block 32 of the magnetic sleeve 3 attracts the pop-out piece 45 of the locking component 4, so that it overcomes the action of the elastic band 44 and slides towards the inside of the sliding gap 23. At this time, press down on the second bracket 2 to make the pop-out piece 45 squeeze the inclined opening 16, so that the limiting member 16 rotates at a certain angle and the pop-out piece 45 slides below the limiting member 16, thus achieving locking.

[0043] Since forest tenure property surveys are often conducted in areas with dense trees or deep valleys where satellite positioning signals are unavailable, existing solutions typically add an IMU module 102 to GNSS for positioning. However, due to the inherent working principle of the IMU module 102, it accumulates errors over time. The integrated position and velocity information includes errors due to time drift. To improve the positioning accuracy of pedestrian navigation systems, zero-velocity correction algorithms are often used to correct these errors. However, in this embodiment, directly placing the IMU module 102 at the lower end of the pole would easily damage it due to vibrations, friction, and water contact with the ground. Furthermore, the limited space at the lower end of the pole makes it difficult to install the IMU module 102. To address this issue, in this embodiment, the measuring instrument 8 further includes a GNSS module 103, an IMU module 102, and a trigger switch 101. GNSS module 103, which is electrically connected to the controller 104 of the measuring instrument 8; IMU module 102, wherein the IMU module 102 is disposed in the first bracket or the second bracket, and the IMU module 102 is electrically connected to the controller 104 of the measuring instrument 8; Trigger switch 101 is mounted on a solid metal head. The trigger point of trigger switch 101 is located on the lower surface of the solid metal head. Trigger switch 101 is electrically connected to controller 104 of measuring instrument 8.

[0044] Furthermore, the positioning method of the measuring instrument is as follows: S01, Acceleration and angular velocity information measured by IMU module 102; S02. Calculate the speed of the rod-shaped object composed of the first support and the second support, and determine whether the rod-shaped object is in the stationary range by the triggering state of the trigger switch 101. If the trigger switch 101 is triggered, it is determined that the rod-shaped object is in the zero speed range; otherwise, it is determined that the rod-shaped object is in the non-stationary range. S03. If the rod-shaped object composed of the first support and the second support is in the stationary range, the ZUPT algorithm is used to correct the position and attitude information of the rod-shaped object composed of the first support and the second support. S04. If the rod-shaped object formed by the first support and the second support is in a non-static region, no correction is made, and the original position and attitude information output by the IMU module 102 is used directly.

[0045] Here, the rod-shaped object is determined to be in a stationary range by detecting whether the solid metal head is on the ground through the trigger switch 101. This solves the difficulty of installing the IMU module 102. The IMU module 102 is installed in the middle of the rod-shaped object and will not be affected by external vibration, temperature and water, etc., resulting in a longer service life.

[0046] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. A real estate surveying and measuring instrument, comprising: Measuring instrument (8); Its characteristic is that it further includes: The carrier plate (7) is connected to the measuring instrument (8) by two sets of wrist straps (9); The second support (2) has a bearing head (6) at its top that cooperates with the bearing plate (7). The first bracket (1) is slidably connected to the second bracket (2), and the bottom end of the first bracket (1) is threaded with a solid metal head (10). The second support (2) has an inner layer (21) and an outer layer (22), and a sliding gap (23) is formed between the inner layer (21) and the outer layer (22). The first support (1) is located inside the sliding gap (23). The top of the first bracket (1) is provided with a snap-fit ​​structure, and a number of locking components (4) are provided equidistantly on the inner side of the inner layer (21) and along the axial direction of the second bracket (2). The second bracket (2) is fitted with a magnetic sleeve (3) on its outer side.

2. The real estate surveying and measuring instrument according to claim 1, characterized in that, The locking component (4) includes: The cylindrical body (41) is arranged horizontally, and both ends of the cylindrical body (41) are fixedly connected to the inner sidewall of the inner layer (21), and the inner layer (21) is provided with an insertion port (42) corresponding to the port of the cylindrical body (41). An embedded cylinder (43) is fixedly connected to the inside of the cylinder body (41) and is located in the middle section of the cylinder body (41); Pop-out piece (45), the pop-out piece (45) is located inside the cylinder (41), there are two pop-out pieces (45), which are located at both ends of the embedded cylinder (43), and the two pop-out pieces (45) are connected by an elastic band (44); The pop-out element (45) is made of a material that can be magnetically attracted.

3. The real estate surveying and measuring instrument according to claim 2, characterized in that, The snap-fit ​​structure includes: The first bracket (1) has a connection port (11) at the top and a limiting member (15) that can be elastically slid into the connection port (11). The first bracket (1) has an annular groove (12) on its inner side. A fixing block (13) is fixedly connected inside the annular groove (12). An elastic block (14) is fixedly connected to one side of the fixing block (13). A limiting member (15) is connected to one end of the elastic block (14) away from the fixing block (13). A slanted opening (16) is provided on the top of the limiting member (15).

4. The real estate surveying and measuring instrument according to claim 1, characterized in that, The magnetic sleeve (3) includes a rubber sleeve (31) and an annular magnetic block (32) embedded inside the rubber sleeve.

5. The real estate surveying and measuring instrument according to claim 1, characterized in that, The first bracket (1) has a protrusion along its length on its side, and the sliding gap (23) has a sliding opening corresponding to the protrusion on its side.

6. The real estate surveying and measuring instrument according to claim 1, characterized in that, The bearing head (6) includes: The carrier plate (61) is fixed to the inside of the second bracket (2); An elastic membrane (62) is fixed inside the second support (2) and is located above the carrier plate (61).

7. The real estate surveying and measuring instrument according to claim 6, characterized in that, The top center of the carrier plate (61) has a positioning protrusion, and the bottom of the bearing plate (7) is provided with a mating port (71) corresponding to the positioning protrusion.

8. The real estate surveying and measuring instrument according to claim 1, characterized in that, The first bracket (1) has a threaded opening at the bottom, and the solid metal head (10) has a threaded post at the top. The bottom of the solid metal head (10) is an arc-shaped protrusion. The second bracket (2) has a handle (5) on its side and near the top.

9. The real estate surveying and measuring instrument according to claim 1, characterized in that, The measuring instrument (8) includes a GNSS module (103), an IMU module (102), and a trigger switch (101). GNSS module (103), which is electrically connected to the controller (104) of the measuring instrument (8); IMU module (102), the IMU module (102) is disposed in the first bracket or the second bracket, and the IMU module (102) is electrically connected to the controller (104) of the measuring instrument (8); Trigger switch (101) is set on solid metal head (10), trigger point of trigger switch (101) is located on the lower surface of solid metal head (10), trigger switch (101) is electrically connected to controller (104) of measuring instrument (8).

10. The real estate surveying and measuring instrument according to claim 9, characterized in that, The positioning method of the measuring instrument is as follows: S01, Acceleration and angular velocity information measured by the IMU module (102); S02. Calculate the speed of the rod-shaped object composed of the first support and the second support, and determine whether the rod-shaped object is in the stationary range by the triggering state of the trigger switch (101). If the trigger switch (101) is triggered, the rod-shaped object is determined to be in the zero speed range; otherwise, the rod-shaped object is determined to be in the non-stationary range. S03. If the rod-shaped object composed of the first support and the second support is in the stationary range, the ZUPT algorithm is used to correct the position and attitude information of the rod-shaped object composed of the first support and the second support. S04. If the rod-shaped object composed of the first support and the second support is in a non-static region, no correction is made, and the original position and attitude information output by the IMU module (102) is used directly.

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