A pole body inclination measuring device and method based on a gravity vertical laser reference

Abstract

The application provides a rod body inclination measuring device and method based on a gravity vertical laser reference, which comprises a fixing part capable of being mounted on a rod body, a bearing part connected with the fixing part, a suspension part mounted on the bearing part and kept vertical to the ground under the action of gravity, a laser emitter mounted on the suspension part and capable of emitting a laser reference line, and a receiving part corresponding to the position of the laser emitter, the receiving part having a receiving surface, the laser reference line being capable of forming a reference point on the receiving surface, and the receiving part being capable of acquiring position information of the reference point on the receiving surface. The laser reference line absolutely vertical to the horizontal plane is automatically established by the suspension part under the action of gravity, the inclination of the measuring device is converted into the horizontal displacement between the top of the measuring rod and the bottom of the measuring rod, the installation alignment error is eliminated in principle, the measuring precision is no longer dependent on the installation level of the operator, and the detection efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of pole tilt measurement, and in particular to a pole tilt measurement device and method based on a gravity-based vertical laser reference. Background Technology

[0002] The pole tilt measuring device based on gravity vertical laser reference is a device for measuring the tilt state of poles such as power poles and communication poles, and generally uses a laser reference for measurement.

[0003] However, existing pole tilt measuring devices have the following problems: In the current technology, whether using an inclinometer or laser rangefinder, the measurement principle is to directly clamp the device body onto the pole, assuming that the device axis is completely parallel to the pole axis, and then indirectly obtain the pole tilt angle by measuring the tilt angle of the device itself. This contact-type indirect measurement method has a fundamental technical defect, namely, the alignment error between the measurement reference and the pole axis cannot be eliminated. The pole surface has taper and irregularity, and no matter how the clamping structure is designed, it is difficult to ensure that its central axis is parallel to the geometric axis of the pole with high precision. Any tiny installation deviation will be directly converted into measurement error, and the measurement accuracy is heavily dependent on the operator's installation level and repeated calibration. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is: low measurement accuracy.

[0005] The above-mentioned technical problems are solved by the following technical solution: This invention proposes a rod tilt measurement device based on a gravity-driven vertical laser reference, comprising, A fixing part that can be installed on the rod; A supporting part, which is connected to the fixing part; The suspension unit is mounted on the bearing unit and remains perpendicular to the ground under the action of gravity; A laser emitter, mounted on the suspension unit, is capable of emitting a laser reference line; The receiving unit is positioned corresponding to the laser emitter. The receiving unit has a receiving surface, and the laser reference line can form a reference point on the receiving surface. The receiving unit can acquire the position information of the reference point on the receiving surface. The processing unit, which is connected to the receiving unit, is capable of calculating the tilt parameters of the rod based on the position information of the reference point.

[0006] In a preferred embodiment of the pole tilt measuring device based on gravity vertical laser reference of the present invention: the suspension part includes a connecting mechanism and a gravity pendulum mechanism, the connecting mechanism is connected to the bearing part, and can provide at least two orthogonal swing degrees of freedom; The gravity pendulum mechanism is connected to the connecting mechanism, and the laser emitter is mounted on the gravity pendulum mechanism, with the laser reference line emitted by the emitter coinciding with the gravity direction line of the gravity pendulum mechanism.

[0007] In a preferred embodiment of the pole tilt measuring device based on gravity vertical laser reference of the present invention: the receiving unit includes a position measuring device, which is used to acquire the position information of the reference point on the receiving surface.

[0008] In a preferred embodiment of the pole tilt measuring device based on gravity vertical laser reference of the present invention: the receiving unit further includes an azimuth measuring device, which is used to obtain the reference azimuth angle of the receiving unit relative to geographic north.

[0009] In a preferred embodiment of the pole tilt measuring device based on gravity vertical laser reference of the present invention: the position measuring device is one of a two-dimensional position detector, a CCD sensor, a CMOS sensor, or a scale target plate with position scale markings.

[0010] In a preferred embodiment of the pole tilt measuring device based on gravity vertical laser reference of the present invention: the fixing part includes a fixing strap and a fitting structure connected to the fixing strap, the fitting structure being capable of tightening the fixing strap.

[0011] In a preferred embodiment of the gravity-based vertical laser reference rod tilt measuring device of the present invention: the gravity pendulum mechanism includes a pendulum rod and a counterweight structure mounted on the pendulum rod.

[0012] This invention also provides a method for measuring the tilt of a pole based on a gravity-driven vertical laser reference, characterized by: employing the above-mentioned method for measuring the tilt of a pole based on a gravity-driven vertical laser reference; including the following steps: Install the fixing part on the part of the rod to be measured; The laser emitter is mounted on the support unit via the suspension unit. The laser emitter is then released so that it automatically remains perpendicular to the ground under the action of gravity, so as to project downwards to form a laser reference line. A receiving unit is placed at the bottom of the rod and adjusted to be horizontal so that the laser reference line forms a reference point on the receiving surface of the receiving unit. Obtain the position information of the reference point on the receiving surface; Obtain the vertical distance between the laser emitting part and the receiving surface; The tilt parameters of the pole are calculated based on the location information and the vertical distance.

[0013] In a preferred embodiment of the pole tilt measurement method based on a gravity-driven vertical laser reference described in this invention: the position information is the two-dimensional offset of the reference point on the receiving surface. The tilt parameters include the tilt angle. The calculation formula is as follows: in, The vertical distance is given.

[0014] In a preferred embodiment of the pole tilt measurement method based on gravity vertical laser reference described in this invention: the reference azimuth angle of the receiving unit relative to geographic north is obtained. ; The offset polar angle in the receiver's own coordinate system is calculated based on the location information. ; The reference azimuth angle With the offset polar angle By superimposing the values, the absolute tilt azimuth angle of the rod in the geodetic coordinate system is calculated. .

[0015] The beneficial effects of this invention are as follows: This device automatically establishes a laser reference line that is absolutely perpendicular to the horizontal plane under the action of gravity through the suspension part, and converts the tilt angle of the measuring device itself into the horizontal displacement between the top and bottom of the measuring rod. In principle, it eliminates the installation alignment error, and the measurement accuracy no longer depends on the operator's installation level, thereby improving the detection efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments of the present invention will be briefly described below. Obviously, the drawings described below only relate to some embodiments of the present invention and are not intended to limit the present invention. Wherein: Figure 1 A schematic diagram of the overall structure of a rod tilt measuring device based on a gravity-driven vertical laser reference is shown. Figure 2 A diagram showing the working state of a pole tilt measuring device based on a gravity-driven vertical laser reference is provided. Figure 3 A partial structural diagram of a rod tilt measuring device based on a gravity-driven vertical laser reference is shown. Figure 4 A partial front view of a rod tilt measuring device based on a gravity-driven vertical laser reference is shown. Detailed Implementation

[0017] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0018] The terminology used in this invention is that which is currently widely used in the art in consideration of the function of the invention; however, these terms may vary according to the intent of those skilled in the art, precedent, or new technology in the art. Furthermore, specific terms may be chosen by the applicant, and in such cases, their detailed meanings will be described in the detailed description of the invention. Therefore, the terms used in this specification should not be construed as simple names, but rather based on their meanings and the overall description of the invention.

[0019] Reference Figure 1 This embodiment provides a pole tilt measuring device based on a gravity-driven vertical laser reference, including a fixing part 1. The fixing part 1 is not limited to any form; it can be a clamp-type structure or a strap-type structure. It can be installed on the pole. It should be noted that the measurement principle of this device is to use gravity to establish a laser reference line that is absolutely perpendicular to the horizontal plane, and to calculate the tilt parameters of the pole by measuring the offset of the top of the pole relative to the bottom.

[0020] Please continue to refer to this. Figure 1 The device also includes a support part 2, which is connected to the fixing part 1. The function of the support part 2 is to provide an installation position for the suspension part 3. The support part 2 is not limited to any form; it can be a plate structure or a frame structure. In this embodiment, the support part 2 is a plate structure. After the fixing part 1 is installed on the rod, the support part 2 extends outward to provide a support point for the suspension part 3.

[0021] Please continue to refer to this. Figure 1 The device also includes a suspension part 3, which is mounted on the support part 2 and remains perpendicular to the ground under the action of gravity. The function of the suspension part 3 is to support the laser emitter 4 and keep it in a vertical position. It should be noted that no matter how the rod is tilted, when the support part 2 tilts accordingly, the suspension part 3 can adjust its posture under the action of gravity and remain perpendicular to the ground.

[0022] Please continue to refer to this. Figure 2 The device also includes a laser emitter 4, which is mounted on the suspension part 3 and is capable of emitting a laser reference line. In this embodiment, the laser reference line emitted by the laser emitter 4 is a visible laser beam. The laser emitter 4 moves synchronously with the suspension part 3. When the suspension part 3 remains perpendicular to the ground under the action of gravity, the laser emitter 4 also remains vertical, and the laser reference line emitted by it is a reference line perpendicular to the horizontal plane.

[0023] Please continue to refer to this. Figure 2The device also includes a receiving unit 5, which is positioned corresponding to the laser emitter 4. The receiving unit 5 has a receiving surface, and the laser reference line can form a reference point on the receiving surface. The receiving unit 5 can obtain the position information of the reference point on the receiving surface. It should be noted that the receiving unit 5 is placed on the ground at the bottom of the pole. When the pole is in an absolutely vertical state, the suspension point at the top of the pole and the center of the receiving unit 5 at the bottom of the pole are on the same vertical line, and the reference point should fall on the center of the receiving surface. If the pole is tilted, the top of the pole will cause the suspension point to shift horizontally, but the direction of the laser reference line remains unchanged under the action of gravity and always points to the center of the earth. Therefore, the reference point will deviate from the center of the receiving surface. The degree of tilt of the pole can be calculated by measuring this deviation.

[0024] Please continue to refer to this. Figure 2 The device also includes a processing unit 6, which is connected to the receiving unit 5 and can calculate the tilt parameters of the rod based on the position information of the reference point. In this embodiment, the tilt parameters include at least one of the tilt angle and the absolute tilt azimuth angle. The processing unit 6 is not limited in form and can be a microprocessor, a microcontroller or an embedded system. The processing unit 6 can be set independently or integrated into the receiving unit 5.

[0025] It should be noted that this device also includes a power supply unit 7. The main body of the power supply unit 7 is a power source, which is equipped with a display screen 71, a power display module 72, and a power switch 73. The main function of the power supply unit 7 is to supply power to the laser emitter 4.

[0026] As an optional embodiment, the suspension part 3 includes a connecting mechanism 31 and a gravity pendulum mechanism 32. The connecting mechanism 31 is connected between the support part 2 and the gravity pendulum mechanism 32, and can provide at least two orthogonal swing degrees of freedom. In this embodiment, the connecting mechanism 31 functions similarly to a universal joint, allowing the gravity pendulum mechanism 32 to swing freely in any direction. It should be noted that no matter how the rod is tilted, when the support part 2 is tilted accordingly, the connecting mechanism 31 can allow the gravity pendulum mechanism 32 to swing freely in multiple directions relative to the support part 2, so that the gravity pendulum mechanism 32 can automatically find the vertical direction under the action of gravity.

[0027] The gravity pendulum mechanism 32 is connected to the connecting mechanism 31. The laser emitter 4 is mounted on the gravity pendulum mechanism 32, and the laser reference line emitted by the laser emitter coincides with the gravity direction line of the gravity pendulum mechanism 32. In this embodiment, the laser emitter 4 is fixedly installed at the center position of the gravity pendulum mechanism 32. It should be noted that setting the optical axis of the laser emitter 4 to coincide with the gravity direction line of the gravity pendulum mechanism 32 is to ensure that the laser reference line emitted by the laser emitter 4 is the gravity direction of the gravity pendulum mechanism 32. When the gravity pendulum mechanism 32 automatically maintains verticality under the action of gravity, the laser reference line is a reference line perpendicular to the horizontal plane. The reference line does not depend on the installation posture of the fixed part 1 or the bearing part 2, thereby eliminating installation alignment errors.

[0028] As an optional embodiment, the receiving unit 5 includes a position measuring device, which is used to acquire the position information of the reference point on the receiving surface. In this embodiment, the position measuring device is used to detect the position of the light spot formed by the laser reference line on the receiving surface and convert it into coordinate data that can be calculated by the processing unit 6. It should be noted that the accuracy of the position measuring device directly determines the measurement accuracy of the entire device. Therefore, the position measuring device should be a sensor with a high resolution.

[0029] The position measuring device is one of a two-dimensional position detector, a CCD sensor, a CMOS sensor, or a scale target plate with position scale markings. In this embodiment, a two-dimensional position detector is selected as the position measuring device. The two-dimensional position detector can detect the two-dimensional coordinates of the laser spot on the receiving surface in real time and transmit the coordinate data to the processing unit 6 in real time.

[0030] As an optional embodiment, the receiving unit 5 also includes an azimuth measuring device, which is used to obtain the reference azimuth angle of the receiving unit 5 relative to geographic north. In this embodiment, the azimuth measuring device is an electronic compass, which can be integrated inside the receiving unit 5 or inside the processing unit 6. It should be noted that when the receiving unit 5 is placed on the ground at the bottom of the pole, its placement direction is arbitrary. The operator does not need to align the receiving unit 5 with a specific direction. The electronic compass can automatically measure the angle between the placement direction of the receiving unit 5 and geographic north, and transmit the reference azimuth angle data to the processing unit 6. The processing unit 6, combined with the position information of the reference point, can calculate the tilt direction of the pole in the geodetic coordinate system, thereby achieving rapid measurement.

[0031] As an optional embodiment, the fixing part 1 includes a fixing strap 11 and a fitting structure 12 connected to the fixing strap 11. The fitting structure 12 can tighten the fixing strap 11. In this embodiment, the fixing strap 11 is an arc-shaped clamp, and the fitting structure 12 is a locking bolt. By tightening the locking bolt, the arc-shaped clamp can be tightened and fitted to the surface of the pole. It should be noted that, unlike the prior art, the fixing part 1 in this device does not require high-precision horizontal or vertical calibration. Its only function is to provide a stable mounting point to reliably fix the bearing part 2 and the suspension part 3 to the pole. The installation angle and posture of the fixing part 1 have no impact on the measurement accuracy, reducing the difficulty of operation. Ordinary operators can complete the installation without professional training.

[0032] As an optional embodiment, the gravity pendulum mechanism 32 includes a pendulum rod 321 and a counterweight structure 322 mounted on the pendulum rod 321. In this embodiment, the upper end of the pendulum rod 321 is connected to the connecting mechanism 31, and the lower end of the pendulum rod 321 is equipped with the counterweight structure 322. The laser emitter 4 is mounted at the center of the counterweight structure 322. It should be noted that the function of the counterweight structure 322 is to increase the overall mass of the gravity pendulum mechanism 32 so that it has sufficient restoring torque under the action of gravity, can overcome the internal friction of the connecting mechanism 31, and automatically swing and stabilize in the vertical direction in a natural state.

[0033] The counterweight structure 322 can be a metal block, a counterweight ring, or other components with a certain mass. Its specific shape and weight can be designed to match the weight of the laser emitter 4 and the friction characteristics of the connecting mechanism 31 to ensure that the gravity pendulum mechanism 32 establishes a vertical reference through the direction of gravity.

[0034] This embodiment also provides a method for measuring the tilt of a pole based on a gravity-driven vertical laser reference, including the following steps: S1: Install the fixing part 1 on the part of the rod to be tested. In this embodiment, the part to be tested is usually the top of the rod or near the top. The fixing part 1 is held tightly to the surface of the rod by the fixing strap 11 and the fitting structure 12. No horizontal or vertical calibration is required during installation. It is only necessary to ensure that the fixing part 1 is stable.

[0035] S2: The laser emitter 4 is mounted on the bearing part 2 via the suspension part 3. The laser emitter 4 is released so that it automatically remains perpendicular to the ground under the action of gravity, so as to project downward to form a laser reference line. It should be noted that after the suspension part 3 is released, the gravity pendulum mechanism 32 swings freely around the connecting mechanism 31 under the action of the counterweight structure 322. After a short swing process, it automatically stabilizes in a vertical state. At this time, the laser reference line emitted by the laser emitter 4 is a reference line that is absolutely perpendicular to the horizontal plane. This reference line does not depend on the installation posture of the fixing part 1, thus eliminating the installation alignment error in principle.

[0036] S3: Place the receiver 5 at the bottom of the pole and adjust it to be horizontal so that the laser reference line forms a reference point on the receiving surface of the receiver 5. In this embodiment, the receiver 5 is placed on the ground at the bottom of the pole. The operator adjusts the receiver 5 to be horizontal through the leveling mechanism. The laser reference line projected by the laser emitter 4 illuminates the receiving surface to form a light spot, which is the reference point.

[0037] S4: Obtain the position information of the reference point on the receiving surface. In this embodiment, the position information is automatically obtained by the position measuring device, and the position measuring device transmits the two-dimensional coordinate data of the reference point to the processing unit 6.

[0038] S5: Obtain the vertical distance between the laser emitter 4 and the receiving surface. It should be noted that the vertical distance can be obtained by manual input or by automatic measurement by the ranging unit. The vertical distance data is also transmitted to the processing unit 6.

[0039] S6: Based on the position information and vertical distance, the tilt parameters of the rod are calculated. In this embodiment, the processing unit 6 calculates the tilt angle of the rod based on the two-dimensional offset of the reference point and the vertical distance through geometric relationships. The position information includes the offset direction and offset of the reference point relative to the center of the receiving surface. Combined with the vertical distance, the degree of tilt of the rod relative to the vertical direction can be uniquely determined. The specific calculation method is as follows: The position information is the two-dimensional offset of the reference point on the receiving surface. The tilt parameters include the tilt angle. In this embodiment, the processing unit (6) obtains the two-dimensional offset. and vertical distance Then, the tilt angle of the rod can be calculated using geometric relationships.

[0040] It should be noted that the calculation of the tilt angle The geometric principle is as follows: taking the location of laser emitter 4 as the vertex, and the vertical distance... With one leg as a right angle and the other leg as the total horizontal offset of the reference point on the receiving surface, a right triangle is formed, with an inclination angle of [missing information]. This is the angle between the perpendicular side and the hypotenuse in the right triangle. The specific formula for calculation is: in, This is the vertical distance between the laser emitter 4 and the receiving surface.

[0041] For example, in a certain measurement, the vertical distance between the laser emitter 4 and the receiving surface... Meters, the two-dimensional offset of the reference point on the receiving surface is... rice, Meters, then the total horizontal offset for: tilt angle for: Again, exemplarily speaking, in a certain measurement, the vertical distance Meters, the two-dimensional offset of the reference point on the receiving surface is... rice, Meters, then the total horizontal offset for: tilt angle for: It should be noted that, according to relevant acceptance specifications, the inclination of a straight pole must not exceed three-thousandths of its length. Taking a pole that is meters high as an example, its maximum allowable tilt angle is approximately The measurement accuracy of this device is better than It has a higher measurement accuracy than traditional inclinometers, can accurately determine whether the pole meets the requirements of the acceptance specifications, and can also capture the slight tilt changes of the pole to detect hidden problems such as foundation settlement and soil loosening in advance.

[0042] This device can also calculate the absolute tilt azimuth angle of the rod in the geodetic coordinate system. The specific steps are as follows: Acquire the reference azimuth angle of receiver 5 relative to geographic north. In this embodiment, the reference azimuth angle The orientation is automatically measured by an electronic compass, and the measured value represents the angle between the placement direction of the receiver 5 and the geographic north.

[0043] The offset polar angle in the coordinate system of the receiving unit 5 is calculated based on the location information. In this embodiment, the offset polar angle The calculation formula is ,in This refers to the two-dimensional offset of the reference point on the receiving surface. It should be noted that... The purpose of using the function other than the ordinary arctangent function is that... The function can be based on and The sign of the reference point is automatically determined to indicate the quadrant in which it is located, thus providing... to The complete azimuth angle within the range avoids the sign error problem that occurs in the second and third quadrants of the ordinary arctangent function.

[0044] Reference azimuth angle With offset polar angle By superimposing the values, the absolute tilt azimuth angle of the rod in the geodetic coordinate system can be calculated. The calculation formula is as follows: It should be noted that when the calculation result When, should be subtracted Make it fall to Within a certain range, so as to facilitate description according to geographical location conventions.

[0045] The calculation process is illustrated below with specific numerical examples.

[0046] In a certain measurement, the electronic compass measured the reference azimuth angle of receiver 5. (That is, the front of receiver 5 points north-northeast) The two-dimensional offset of the reference point on the receiving surface is... rice, Meters, then the polar angle is offset. for: Absolute tilt azimuth for: That is, the pole is tilted in the direction of north-northeast. That is, slightly east of northeast.

[0047] In a certain measurement, the electronic compass measured the reference azimuth angle of receiver 5. (That is, the front of receiver 5 points south-southeast) The two-dimensional offset of the reference point on the receiving surface is... rice, Meters, then the polar angle is offset. for: Absolute tilt azimuth for: That is, the pole is tilted in the direction of south-west. That is, the southwest direction.

[0048] In a certain measurement, the electronic compass measured the reference azimuth angle of receiver 5. The two-dimensional offset of the reference point on the receiving surface is rice, Meters, then the polar angle is offset. for: Convert to to scope, Then the absolute tilt azimuth angle for: because ,minus The result was: That is, the pole is tilted in the direction of north-west. It is close to due west.

[0049] Finally, it should be noted that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways as long as they do not depart from the scope of the present invention.

Claims

1. A pole tilt measuring device based on a gravity-driven vertical laser reference, characterized in that: include, Fixing part (1), which can be installed on the rod; The supporting part (2) is connected to the fixing part (1); The suspension part (3) is mounted on the bearing part (2) and remains perpendicular to the ground under the action of gravity; A laser emitter (4), which is mounted on the suspension part (3), is capable of emitting a laser reference line; The receiving unit (5) is located corresponding to the position of the laser emitter (4). The receiving unit (5) has a receiving surface. The laser reference line can form a reference point on the receiving surface. The receiving unit (5) can obtain the position information of the reference point on the receiving surface. The processing unit (6), which is connected to the receiving unit (5), is able to calculate the tilt parameters of the rod based on the position information of the reference point.

2. The pole tilt measuring device based on a gravity-driven vertical laser reference according to claim 1, characterized in that: The suspension part (3) includes a connecting mechanism (31) and a gravity pendulum mechanism (32). The connecting mechanism (31) is connected to the bearing part (2) and can provide at least two orthogonal swing degrees of freedom. The gravity pendulum mechanism (32) is connected to the connecting mechanism (31), and the laser emitter (4) is mounted on the gravity pendulum mechanism (32), and the laser reference line emitted by it coincides with the gravity direction line of the gravity pendulum mechanism (32).

3. The pole tilt measuring device based on a gravity-driven vertical laser reference according to claim 1, characterized in that: The receiving unit (5) includes a position measuring device, which is used to acquire the position information of the reference point on the receiving surface.

4. The pole tilt measuring device based on a gravity-driven vertical laser reference according to claim 1, characterized in that: The receiving unit (5) further includes an azimuth measuring device, which is used to obtain the reference azimuth angle of the receiving unit (5) relative to geographic north.

5. The pole tilt measuring device based on a gravity-driven vertical laser reference according to claim 3, characterized in that: The position measuring device is one of a two-dimensional position detector, a CCD sensor, a CMOS sensor, or a scale target plate with position scale markings.

6. The pole tilt measuring device based on a gravity-driven vertical laser reference according to claim 1, characterized in that: The fixing part (1) includes a fixing strap (11) and a fitting structure (12) connected to the fixing strap (11), the fitting structure (12) being able to tighten the fixing strap (11).

7. The pole tilt measuring device based on a gravity-driven vertical laser reference according to claim 2, characterized in that: The gravity pendulum mechanism (32) includes a pendulum rod (321) and a counterweight structure (322) mounted on the pendulum rod (321).

8. A method for measuring the tilt of a pole based on a gravity-driven vertical laser reference, characterized in that: A method for measuring the tilt of a pole based on a gravity-driven vertical laser reference, as described in any one of claims 1 to 7, includes the following steps: Install the fixing part (1) on the part of the rod to be measured; The laser emitter is mounted on the support (2) via the suspension part (3), and the laser emitter is released so that it automatically remains perpendicular to the ground under the action of gravity, so as to project downward to form a laser reference line; Place a receiving part (5) at the bottom of the rod and adjust it to be horizontal so that the laser reference line forms a reference point on the receiving surface of the receiving part (5); Obtain the position information of the reference point on the receiving surface; Obtain the vertical distance between the laser emitting part and the receiving surface; The tilt parameters of the pole are calculated based on the location information and the vertical distance.

9. The method for measuring the tilt of a cement pole based on a gravity-driven vertical laser reference according to claim 8, characterized in that: The location information is the two-dimensional offset of the reference point on the receiving surface. The tilt parameters include the tilt angle. The calculation formula is as follows: in, The vertical distance is given.

10. The method for measuring the tilt of a cement pole based on a gravity-driven vertical laser reference according to claim 8, characterized in that: The receiver (5) is obtained from the reference azimuth angle relative to geographic north. ; The offset polar angle in the coordinate system of the receiving unit (5) is calculated based on the location information. ; The reference azimuth angle With the offset polar angle By superimposing the values, the absolute tilt azimuth angle of the rod in the geodetic coordinate system is calculated. .

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