An angle-adjustable laser ranging device and laser ranging method

Abstract

This invention belongs to the field of laser ranging technology and provides an angle-adjustable laser ranging device and method. The angle-adjustable laser ranging device includes a base, a base plate rotatably mounted on the base, and a first rotating power component that drives the base plate to rotate fixedly mounted on the base. A rotating plate is rotatably mounted on the base and driven by a second rotating power component. The invention aims to solve the technical problem in existing technologies where the adjustment sequence is chaotic, leading to mutual interference between adjustments, increased complexity and time consumption, and reduced ranging efficiency. Compared to existing technologies, the advantages of this invention are as follows: it achieves sequential adjustment of the device, streamlines the adjustment process, reduces the difficulty of adjustment, improves ranging efficiency, clearly indicates the direction of rotation of the base plate and rotating plate, clearly indicates the adjustment direction to the operator, and achieves precise stopping of the base plate and rotating plate.

Description

Technical Field

[0001] This invention belongs to the field of laser ranging technology, and particularly relates to an angle-adjustable laser ranging device and laser ranging method. Background Technology

[0002] A laser rangefinder is an instrument that accurately measures the distance to a target by modulating a laser with a specific parameter. A pulsed laser rangefinder emits a single or a series of short pulsed laser beams towards the target. A photoelectric element receives the reflected laser beam, and a timer measures the time from emission to reception to calculate the distance from the rangefinder to the target.

[0003] When using a laser rangefinder, it needs to be set up and ensured to be horizontal. The applicant found some existing technologies, such as Chinese patent publication number CN115372937B. When the device needs to be placed on an inclined plane, each independent support rod is adjusted in turn to create a difference in the height of the pad at the bottom of the independent support rod, which complements the slope of the bottom surface. The horizontality of the support plate is detected by a level and adjusted in conjunction with the support rods.

[0004] However, the aforementioned patent still has some shortcomings: Since the support plate is supported by multiple sets of support rods simultaneously, adjusting each set of support rods will cause a change in the overall levelness of the support plate. After adjusting one set of support rods to make the corresponding support plate position reach a horizontal position, the support rods in other positions need to be adjusted. As a result, the levelness of the support plate changes as a whole when the other support rods are adjusted, requiring multiple adjustments to different rods. The adjustment sequence is rather chaotic, and it is difficult to determine the specific moving distance and direction of each set of support rods. This increases the adjustment complexity when using the device, thereby increasing the adjustment time. Each time a new position is changed for distance measurement, readjustment is required, which cannot quickly adjust the state of the device and reduces the efficiency of distance measurement. Summary of the Invention

[0005] The purpose of this invention is to provide an angle-adjustable laser ranging device and laser ranging method, aiming to solve the technical problem in the prior art where the adjustment sequence is chaotic, causing the results of previous and subsequent adjustments to affect each other, increasing the complexity and time consumption of adjustment, and reducing the ranging efficiency.

[0006] The present invention is implemented as follows: an angle-adjustable laser rangefinder device includes a base, a base plate rotatably mounted on the base and a first rotating power component for driving the base plate to rotate is fixedly mounted on the base, a rotating plate rotatably mounted on the base plate and driven by a second rotating power component, a mounting plate fixedly mounted on one end of the rotating plate, a laser rangefinder body is disposed on the mounting plate, and an angle sensor for detecting the angle between the mounting plate and the direction of gravity is fixedly mounted on the surface of the mounting plate near the rotating plate. Both sides of the rotating plate are fixedly installed with frame-shaped limiting frames. Each set of limiting frames is fixedly installed with a first pressure sensor and a second pressure sensor. Both sides of the rotating plate are fixedly connected with pull wires. Each set of pull wires is fixedly connected to a counterweight block located in the limiting frame on the same side. The counterweight block is used in conjunction with the first pressure sensor and the second pressure sensor in the limiting frame on the same side.

[0007] A further technical solution: Two sets of spaced support plates are fixedly installed on the substrate. A rotating plate is rotatably installed on the support plates and a second rotating power component is fixedly installed on the support plates. An arc-shaped angle ruler is fixedly installed on one set of support plates. The center of the arc-shaped angle ruler is located on the extension line of the rotation axis of the rotating plate. The arc-shaped angle ruler is used in conjunction with a pointer fixedly installed on the side of the rotating plate and is used to detect the rotation angle between the support plate and the rotating plate.

[0008] A further technical solution: A top plate is rotatably mounted on the mounting plate via mounting columns. The laser rangefinder body is mounted on the top plate. Two sets of fixing plates located on both sides of the laser rangefinder body are fixedly mounted on the top plate. Fixing screws for fixing the laser rangefinder body are threadedly connected to the fixing plates.

[0009] A further technical solution: A worm gear is rotatably mounted on the mounting plate, the worm gear is perpendicular to the mounting column, and the worm gear meshes with a worm wheel fixedly mounted on the mounting column.

[0010] A further technical solution: A laser rangefinder sensor for detecting the distance between the mounting plate and the substrate is fixedly installed on the surface of the mounting plate near the rotating plate. Two sets of laser rangefinder sensors are provided and distributed on both sides of the rotating plate.

[0011] A further technical solution: The first pressure sensor and the second pressure sensor located in the same set of limiting frames are located on two adjacent side walls within the limiting frames, and the first pressure sensor is located on the side wall closer to the rotating plate, while the second pressure sensors located on both sides of the rotating plate are distributed on opposite side walls of the two sets of limiting frames.

[0012] The present invention also provides a laser ranging method, applied to an angle-adjustable laser ranging device as described above, comprising the following steps: Step 1: Preliminary device status check: Move the base to the distance measuring position and fix it. The tilt sensor detects the tilt angle of the mounting plate relative to the direction of gravity. If the tilt angle is 90 degrees, directly install the laser rangefinder body for distance measurement.

[0013] Step 2, Device Status Adjustment: If the tilt angle is not 90 degrees, the first and second rotating power components sequentially drive the base plate and the rotating plate to rotate and adjust until the pressure detected by the first and second pressure sensors are both equal, and the adjustment is completed.

[0014] Step 3, Device Status Verification: The first direct verification is performed by re-detecting the tilt angle of the mounting plate relative to the direction of gravity using the tilt sensor. The second reverse verification is performed by comparing the slope tilt angle calculated by the laser rangefinder with the slope tilt angle displayed by the arc angle ruler.

[0015] Step 4, Distance Measurement: After verifying that the mounting plate is level, install the laser rangefinder onto the mounting plate to measure the distance.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. By rotating the base plate, the rotation axis of the rotating plate can be made perpendicular to the vertical plane. Then, by adjusting the rotating plate, the rotating plate can be made to be in a vertical state, thus completing the adjustment. This realizes the sequential adjustment of the device, realizes the process of device adjustment, reduces the difficulty of device adjustment, and allows for subsequent adjustments to the device according to the process when changing to flat ground, slopes, etc., thereby improving the speed of device adjustment and improving the efficiency of distance measurement.

[0017] 2. The first and second pressure sensors can detect the state of the rotating plate in real time, clearly indicating the direction in which the base plate and the rotating plate need to rotate, thus indicating the adjustment direction for the operator, reducing the difficulty and time consumption of adjustment, and achieving precise stopping of the base plate and the rotating plate, thereby improving the accuracy and speed of adjustment before use of the device.

[0018] 3. It enables accurate verification of the rotating plate position through multiple methods, ensuring that the rotating plate is in a vertical state. This avoids the need for a single detection method based on the horizontal state of the laser rangefinder, ensuring that the laser rangefinder can perform distance measurement in a horizontal state and improving the accuracy of distance measurement. Attached Figure Description

[0019] Figure 1 This is a first-view structural diagram of the present invention.

[0020] Figure 2 This is a schematic diagram of the second perspective structure of the present invention.

[0021] Figure 3 This is a schematic diagram of the limiting frame in this invention.

[0022] Figure 4 This is a schematic diagram of the structure of the base in the present invention when it is in an inclined state.

[0023] Figure 5 This is a schematic diagram of the rotating plate when the base is in an inclined state in this invention.

[0024] Figure 6 This is a first-view structural diagram of the mounting plate in this invention.

[0025] Figure 7 This is a second-view structural diagram of the mounting plate in this invention.

[0026] In the attached diagram: 1. Base; 2. Base plate; 3. First rotating power component; 4. Support plate; 5. Rotating plate; 6. Mounting plate; 7. Second rotating power component; 8. Arc-shaped angle ruler; 9. Pointer; 10. Limiting frame; 11. First pressure sensor; 12. Second pressure sensor; 13. Pull wire; 14. Counterweight; 15. Mounting column; 16. Top plate; 17. Worm gear; 18. Worm wheel; 19. Laser rangefinder body; 20. Fixing plate; 21. Fixing screw; 22. Tilt sensor; 23. Laser rangefinder sensor. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0028] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0029] like Figures 1-4 As shown, an angle-adjustable laser rangefinder device provided by the present invention includes a base 1, a base plate 2 rotatably mounted on the base 1 and a first rotating power component 3 for driving the base plate 2 to rotate is fixedly mounted on the base 1, a rotating plate 5 rotatably mounted on the base plate 2 and driven by a second rotating power component 7, a mounting plate 6 fixedly mounted on one end of the rotating plate 5, a laser rangefinder body 19 is provided on the mounting plate 6, and an angle sensor 22 for detecting the angle between the mounting plate 6 and the direction of gravity is fixedly mounted on the surface of the mounting plate 6 near the rotating plate 5; Both sides of the rotating plate 5 are fixedly mounted with frame-type limiting frames 10. The limiting frames 10 are located at the end away from the laser rangefinder body 19. Each set of limiting frames 10 is fixedly mounted with a first pressure sensor 11 and a second pressure sensor 12. Both sides of the rotating plate 5 are fixedly connected with pull wires 13. The movable section of each set of pull wires 13 is fixedly connected with a counterweight 14 located in the limiting frame 10 on the same side. The counterweight 14 is used in conjunction with the first pressure sensor 11 and the second pressure sensor 12 in the limiting frame 10 on the same side.

[0030] In practical application, the base 1 is moved to the distance measuring position and fixed. If the distance measuring position is relatively flat, the tilt angle of the mounting plate 6 with the direction of gravity is first detected by the tilt sensor 22. If the tilt angle is 90 degrees, it means that the mounting plate 6 is in a horizontal state. At this time, the laser rangefinder body 19 can be directly installed to perform subsequent distance measurement. If the ranging position is located on an inclined plane, the tilt sensor 22 detects that the tilt angle between the mounting plate 6 and the direction of gravity is not 90 degrees. At this time, the rotating plate 5 is in a tilted state, and under the action of gravity, the counterweight 14 will exert pressure on the first pressure sensor 11 or the second pressure sensor 12. At this time, the angle of the base plate 2 is adjusted, and the first rotating power component 3 drives the base plate 2 to rotate. The base plate 2 drives the rotating plate 5 to rotate as a whole. When the plane where the two pull wires 13 are located rotates to the vertical plane, the counterweight 14 contacts the second pressure sensor 12 but no longer exerts pressure on the second pressure sensor 12 on the side, that is, the reading of the second pressure sensor 12 is zero. The first rotating power component 3 stops rotating. At this time, the angle adjustment of the base plate 2 is completed by the second rotating power component 7. The rotating plate 5 is driven to rotate. When the rotating plate 5 rotates into the vertical plane, the counterweight 14 contacts the first pressure sensor 11 but no longer exerts pressure on the first pressure sensor 11, that is, the reading of the first pressure sensor 11 is zero. The second rotating power component 7 stops rotating. In this state, the two sides of the counterweight 14 are in contact with the first pressure sensor 11 and the second pressure sensor 12 respectively, but no pressure is exerted on the first pressure sensor 11 and the second pressure sensor 12. This indicates that the rotating plate 5 is in a vertical state at this time. After the adjustment is completed, the angle between the mounting plate 6 and the direction of gravity is detected again by the tilt sensor 22 to detect the accuracy of the rotating plate 5 being in a vertical state. Then the laser rangefinder body 19 can be installed on the mounting plate 6 for distance measurement. The tilt sensor 22 can detect the angle between the mounting plate 6 and the direction of gravity before use, thereby detecting the horizontal state of the mounting plate 6. After that, the device is adjusted according to the detection results. After the adjustment is completed, the tilt sensor 22 is used again to detect the adjustment results, thereby verifying the adjustment results and ensuring that the laser rangefinder body 19 can be in a horizontal state for distance measurement, thus improving the accuracy of distance measurement. Rotating the base plate 2 ensures that the rotation axis of the rotating plate 5 is perpendicular to the vertical plane. Adjusting the rotating plate 5 then brings it to a vertical position, thus completing the adjustment. This achieves sequential adjustment of the device, streamlining the adjustment process and reducing the difficulty of adjustment. Subsequent adjustments to flat ground, slopes, or other locations can be made according to this process, increasing the speed of adjustment and improving the efficiency of distance measurement. The pressure received by the first pressure sensor 11 and the second pressure sensor 12 allows for real-time detection of the state of the rotating plate 5, clearly indicating the direction of rotation for the base plate 2 and the rotating plate 5, thus guiding the operator and reducing the difficulty and time spent on adjustment. It also enables precise stopping of the rotation of the base plate 2 and the rotating plate 5, improving the accuracy and speed of pre-use adjustment.

[0031] In one embodiment of the present invention, the first rotating power component 3 and the second rotating power component 7 are respectively a first motor and a second motor. Of course, they can also be other components capable of outputting rotational power, such as a hydraulic motor. The first motor and the second motor drive the base plate 2 and the rotating plate 5 to rotate, respectively.

[0032] like Figure 1 , Figure 4 , Figure 5 As shown, this invention provides an angle-adjustable laser ranging device. Two sets of spaced support plates 4 are fixedly installed on the base plate 2. A rotating plate 5 is rotatably installed on the support plates 4, and a second rotating power component 7 is fixedly installed on the support plates 4. An arc-shaped angle ruler 8 is fixedly installed on one set of support plates 4. The center of the arc-shaped angle ruler 8 is located on the extension line of the rotation axis of the rotating plate 5. The arc-shaped angle ruler 8 is used in conjunction with a pointer 9 fixedly installed on the side of the rotating plate 5 and is used to detect the rotation angle between the support plate 4 and the rotating plate 5.

[0033] In practical application, when the base 1 is tilted and the rotating plate 5 is adjusted to be vertical, the support plate 4 is perpendicular to the base 1. When the rotating plate 5 rotates, it forms an angle with the support plate 4. When the rotating plate 5 is vertical, the angle between it and the support plate 4 is the angle of the slope where the base 1 is located. The zero mark of the arc-shaped angle ruler 8 is located in the middle position and the angle reading is increased to both sides. When the rotating plate 5 rotates, it drives the pointer 9 to move. Therefore, the mark on the arc-shaped angle ruler 8 that the pointer 9 points to is the tilt angle of the slope where the base 1 is located.

[0034] like Figure 6 , Figure 7 As shown, this invention provides an angle-adjustable laser rangefinder device. A top plate 16 is rotatably mounted on the mounting plate 6 via a mounting column 15. The laser rangefinder body 19 is mounted on the top plate 16. Two sets of fixing plates 20 located on both sides of the laser rangefinder body 19 are fixedly mounted on the top plate 16. Fixing screws 21 for fixing the laser rangefinder body 19 are threadedly connected to the fixing plates 20.

[0035] Specifically, in order to facilitate the rotation of the top plate 16, a worm gear 17 is rotatably mounted on the mounting plate 6. The worm gear 17 is perpendicular to the mounting column 15 and meshes with a worm wheel 18 fixedly mounted on the mounting column 15.

[0036] In practical application, after the angle of the rotating plate 5 is adjusted to a vertical state, both the mounting plate 6 and the top plate 16 are in a horizontal state. At this time, the laser rangefinder body 19 can be placed on the top plate 16 and positioned between the two sets of fixing plates 20. Then, the laser rangefinder body 19 is fixed by the fixing screw 21, so that the laser rangefinder body 19 can be used for distance measurement after installation. During distance measurement, the meshing worm 17 and worm wheel 18 drive the top plate 16 to rotate, thereby changing the orientation of the laser rangefinder body 19 and realizing distance measurement in different directions. The self-locking of the worm wheel 18 and worm 17 ensures the stability of the top plate 16 when rotating and stopping, and ensures the stability of the laser rangefinder body 19 during distance measurement.

[0037] like Figure 2 , Figure 7 As shown, this invention provides an angle-adjustable laser ranging device. A laser ranging sensor 23 for detecting the distance between the mounting plate 6 and the substrate 2 is fixedly installed on the surface of the mounting plate 6 near the rotating plate 5. Two sets of laser ranging sensors 23 are provided and distributed on both sides of the rotating plate 5.

[0038] In practical application, after the state of the rotating plate 5 is adjusted, the distance to the substrate 2 is detected by the laser rangefinders 23 on both sides. The difference between the values ​​detected by the two sets of laser rangefinders 23 is the height difference of the detection point on the substrate 2. The distance between the two sets of laser rangefinders 23 is a fixed value. Thus, the angle between the substrate 2 and the horizontal plane can be calculated by the arctangent function. The angle between the substrate 2 and the horizontal plane is the angle between the slope of the base 1 and the horizontal plane. By comparing the calculated slope inclination angle with the slope inclination angle obtained on the arc angle ruler 8, if the two angles are the same, it means that the rotating plate 5 is in a vertical state. This achieves accurate verification of the position of the rotating plate 5 in multiple ways, ensuring that the rotating plate 5 is in a vertical state, avoiding the single detection of the horizontal state of the laser rangefinder body 19, and ensuring that the laser rangefinder body 19 can be in a horizontal state for distance measurement.

[0039] like Figure 1 , Figure 3 , Figure 4 , Figure 5As shown, this invention provides an angle-adjustable laser ranging device. The first pressure sensor 11 and the second pressure sensor 12, located within the same set of limiting frames 10, are located on two adjacent side walls within the limiting frames 10. The first pressure sensor 11 is located on the side wall near the rotating plate 5, and the second pressure sensors 12, located on both sides of the rotating plate 5, are distributed on opposite side walls of the two sets of limiting frames 10.

[0040] In practical application, when the rotating plate 5 is in a vertical state, the two sides of the counterweight 14 are in contact with the first pressure sensor 11 and the second pressure sensor 12 respectively, but no pressure is generated on the first pressure sensor 11 and the second pressure sensor 12. When the rotating plate 5 is in an inclined state, the counterweight 14 will generate pressure on one or two sets of the first pressure sensor 11 and the second pressure sensor 12. The limit frame 10 restricts the movement space of the counterweight 14, so as to avoid the counterweight 14 from shaking when the rotating plate 5 is tilted.

[0041] like Figures 1-7 As shown, this invention provides a laser ranging method applied to an angle-adjustable laser ranging device as described above, comprising the following steps: Step 1: Preliminary device status check: Move the base 1 to the distance measuring position and fix it. The tilt sensor 22 detects the tilt angle of the mounting plate 6 relative to the direction of gravity. If the tilt angle is 90 degrees, directly install the laser rangefinder body 19 for distance measurement.

[0042] Step 2, Device Status Adjustment: If the tilt angle is not 90 degrees, the first rotating power component 3 and the second rotating power component 7 sequentially drive the base plate 2 and the rotating plate 5 to rotate and adjust until the pressure detected by the first pressure sensor 11 and the second pressure sensor 12 are both zero, and the debugging is completed.

[0043] Step 3, Device Status Verification: The tilt angle of the mounting plate 6 relative to the direction of gravity is detected again by the tilt sensor 22 for the first direct verification. The slope tilt angle calculated by the laser rangefinder 23 is compared with the slope tilt angle displayed by the arc angle ruler 8 for the second reverse verification.

[0044] Step 4, Distance Measurement: After verifying that the mounting plate 6 is in a horizontal position, install the laser rangefinder body 19 on the mounting plate 6 to measure the distance.

[0045] In practical application, the tilt sensor 22 detects the horizontal state of the mounting plate 6. Then, the device is adjusted or the distance is measured directly based on the detection results. During adjustment, the base plate 2 and the rotating plate 5 rotate sequentially. The state of the rotating plate 5 is detected by the first pressure sensor 11 and the second pressure sensor 12. After adjustment, the horizontal state of the mounting plate 6 is verified by the tilt sensor 22, the laser distance sensor 23 and the arc angle ruler 8. After verification, the distance can be measured.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0047] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An angle-adjustable laser rangefinder, comprising a base (1), characterized in that, A base plate (2) is rotatably mounted on the base (1), and a first rotating power component (3) for driving the base plate (2) to rotate is fixedly mounted on the base (1). A rotating plate (5) is rotatably mounted on the base plate (2) and is driven by a second rotating power component (7). A mounting plate (6) is fixedly mounted on one end of the rotating plate (5). A laser rangefinder body (19) is provided on the mounting plate (6). An angle sensor (22) for detecting the angle between the mounting plate (6) and the direction of gravity is fixedly mounted on the surface of the mounting plate (6) near the rotating plate (5). The rotating plate (5) has frame-type limiting frames (10) fixedly installed on both sides. Each limiting frame (10) has a first pressure sensor (11) and a second pressure sensor (12) fixedly installed inside. Pull wires (13) are fixedly connected to both sides of the rotating plate (5). Each pull wire (13) has a counterweight (14) fixedly connected to the movable section of the pull wire (13) inside the limiting frame (10) on the same side. The counterweight (14) works in conjunction with the first pressure sensor (11) and the second pressure sensor (12) inside the limiting frame (10) on the same side. The first pressure sensor (11) and the second pressure sensor (12) located in the same set of limiting frames (10) are located on two adjacent side walls of the limiting frame (10), and the first pressure sensor (11) is located on the side wall close to the rotating plate (5), and the second pressure sensors (12) located on both sides of the rotating plate (5) are distributed on opposite side walls of the two sets of limiting frames (10).

2. The angle-adjustable laser ranging device according to claim 1, characterized in that, Two sets of spaced support plates (4) are fixedly installed on the base plate (2). A rotating plate (5) is rotatably installed on the support plate (4) and a second rotating power component (7) is fixedly installed on the support plate (4). An arc-shaped angle ruler (8) is fixedly installed on one of the support plates (4). The center of the arc-shaped angle ruler (8) is located on the extension line of the rotation axis of the rotating plate (5). The arc-shaped angle ruler (8) is used in conjunction with a pointer (9) fixedly installed on the side of the rotating plate (5) and is used to detect the rotation angle between the support plate (4) and the rotating plate (5).

3. The angle-adjustable laser ranging device according to claim 1, characterized in that, The mounting plate (6) is rotatably mounted on a top plate (16) via a mounting column (15). The laser rangefinder body (19) is mounted on the top plate (16). Two sets of fixing plates (20) located on both sides of the laser rangefinder body (19) are fixedly mounted on the top plate (16). The fixing plates (20) are threaded with fixing screws (21) for fixing the laser rangefinder body (19).

4. The angle-adjustable laser ranging device according to claim 3, characterized in that, A worm gear (17) is rotatably mounted on the mounting plate (6). The worm gear (17) is perpendicular to the mounting post (15) and meshes with a worm wheel (18) fixedly mounted on the mounting post (15).

5. The angle-adjustable laser ranging device according to claim 4, characterized in that, A laser rangefinder (23) for detecting the distance between the mounting plate (6) and the substrate (2) is fixedly installed on the surface of the mounting plate (6) near the rotating plate (5). Two sets of laser rangefinders (23) are provided and distributed on both sides of the rotating plate (5).

6. A laser ranging method, characterized in that, The application of an angle-adjustable laser ranging device as described in claim 1 includes the following steps: Step 1, Preliminary state test: Push the base (1) to the distance measuring position and fix it. The tilt sensor (22) detects the tilt angle between the mounting plate (6) and the direction of gravity. If the tilt angle is 90 degrees, then directly install the laser rangefinder body (19) for distance measurement. Step 2, Device status adjustment: If the tilt angle is not 90 degrees, the first rotating power component (3) and the second rotating power component (7) drive the base plate (2) and the rotating plate (5) to rotate and adjust in sequence until the pressure detected by the first pressure sensor (11) and the second pressure sensor (12) are both zero, and the debugging is completed; Step 3, Device Status Verification: The first direct verification is performed by detecting the tilt angle between the mounting plate (6) and the direction of gravity again through the tilt sensor (22). The second reverse verification is performed by comparing the slope tilt angle calculated by the laser rangefinder (23) with the slope tilt angle displayed by the arc angle ruler (8). Step 4, distance measurement: After verifying that the mounting plate (6) is in a horizontal position, install the laser rangefinder body (19) on the mounting plate (6) to measure the distance.

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