Measuring device

Abstract

The utility model provides a measuring device. The measuring device comprises a base; the bracket is rotationally arranged on the base; the at least one first measuring module is arranged on the support, and the first measuring module is used for measuring the distance between the first measuring module and the target object; the at least one second measuring module is arranged on the bracket and is used for measuring the rotation angle of the bracket; the processing module is arranged on the base, and the communication end of the processing module is connected with the communication end of the first measurement module and the communication end of the second measurement module. The measuring device disclosed by the utility model is relatively simple in structure, relatively low in overall use cost, high in overall integration level, easy to carry and more convenient to use, so that the measuring requirements of low cost and high efficiency can be met.

Description

Technical Field

[0001] The present disclosure relates to the field of measurement technology, and in particular to a measuring device. Background Art

[0002] In the fields of engineering construction, parts processing and manufacturing, in order to ensure quality and safety, various measurements of target objects are required, such as measuring the verticality, straightness, circle radius, surface flatness, etc. of the object, and different measurement items often require the replacement of different instruments or equipment. These instruments or equipment are not only complex in structure and high in cost, but also difficult to carry and inconvenient to use, making it difficult to meet measurement needs. Summary of the invention

[0003] The present disclosure aims to solve one of the technical problems in the related art at least to some extent.

[0004] To this end, an object of the present disclosure is to provide a measuring device.

[0005] To achieve the above-mentioned purpose, the present disclosure provides a measuring device, comprising: a base; a bracket, the bracket being rotatably arranged on the base; at least one first measuring module, the first measuring module being arranged on the bracket, and the first measuring module being used to measure the distance between the first measuring module and a target object; at least one second measuring module, the second measuring module being arranged on the bracket, and the second measuring module being used to measure the rotation angle of the bracket; and a processing module, the processing module being arranged on the base, and a communication end of the processing module being respectively connected to a communication end of the first measuring module and a communication end of the second measuring module.

[0006] Optionally, the measuring device also includes: a protective cover, which is arranged on the base and a accommodating cavity is formed between the protective cover and the base, and the bracket and the processing module are respectively located in the accommodating cavity; an opening, which is arranged on the protective cover along the circumference of the bracket rotation axis, and the opening is connected to the accommodating cavity; wherein, when the measuring end of the first measuring module is located at the opening, the first measuring module is used to measure the distance between the first measuring module and the target object through the opening.

[0007] Optionally, the measuring device further comprises: a light-transmitting cover, wherein the light-transmitting cover is disposed on the opening.

[0008] Optionally, the measuring device further includes: a knob, wherein the knob is disposed on the bracket, and a central axis of the knob coincides with a central axis of a rotating shaft of the bracket.

[0009] Optionally, the measuring device further includes: a damper, wherein the damper is arranged between the rotating shaft of the bracket and the base.

[0010] Optionally, the measuring device further comprises: a driving motor, wherein the driving motor is arranged on the base, and the output shaft of the driving motor is drivingly connected to the rotating shaft of the bracket, and the input end of the driving motor is connected to the output end of the processing module.

[0011] Optionally, the measuring device also includes: a rotating gimbal, the base is arranged at the rotating end of the rotating gimbal; wherein the central axis of the bracket shaft is parallel to the central axis of the rotating end of the rotating gimbal, or the central axis of the bracket shaft is perpendicular to the central axis of the rotating end of the rotating gimbal.

[0012] Optionally, the measuring device further comprises: a display, wherein the display is arranged on the base, and an input end of the display is connected to an output end of the processing module.

[0013] Optionally, the measuring device further comprises: a plurality of buttons, wherein the buttons are arranged on the base, and output ends of the buttons are connected to input ends of the processing module.

[0014] Optionally, the first measuring module includes: a laser rangefinder, which is arranged on the bracket, and the communication end of the laser rangefinder is connected to the communication end of the processing module; and / or the second measuring module includes: a three-axis angle sensor or a gyroscope, which is arranged on the bracket, and the communication end of the three-axis angle sensor is connected to the communication end of the processing module, and the gyroscope is arranged on the bracket, and the communication end of the gyroscope is connected to the communication end of the processing module.

[0015] The technical solution provided by the present disclosure may have the following beneficial effects:

[0016] Since the main parts of the measuring device are the rotating bracket and the first measuring module and the second measuring module arranged on the bracket, the structure is relatively simple, so the overall cost of use is low, and the bracket, the first measuring module, the second measuring module and the processing module are all arranged on the base, and the overall integration is high, so it is easy to carry and more convenient to use, thereby meeting the low-cost and high-efficiency measurement needs.

[0017] Additional aspects and advantages of the present disclosure will be given in part in the following description and in part will be obvious from the following description or learned through practice of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present disclosure will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0019] Figure 1is a schematic diagram of the structure of a measuring device proposed in one embodiment of the present disclosure;

[0020] Figure 2 is a circuit diagram of a measuring device provided in an embodiment of the present disclosure;

[0021] Figure 3 is a schematic diagram of the structure of a measuring device proposed in one embodiment of the present disclosure;

[0022] Figure 4 is an application principle diagram of a measuring device proposed in one embodiment of the present disclosure;

[0023] Figure 5 is an application principle diagram of a measuring device proposed in one embodiment of the present disclosure;

[0024] Figure 6 is an application principle diagram of a measuring device proposed in one embodiment of the present disclosure;

[0025] Figure 7 is an application principle diagram of a measuring device proposed in one embodiment of the present disclosure;

[0026] Figure 8 is an application principle diagram of a measuring device proposed in one embodiment of the present disclosure;

[0027] As shown in the figure: 1. base, 2. bracket, 3. first measuring module, 4. second measuring module, 5. processing module, 6. protective cover, 7. light-transmitting cover, 8. knob, 9. driving motor, 10. display, 11. button, 12. first mounting hole, 13. second mounting hole. DETAILED DESCRIPTION

[0028] Embodiments of the present disclosure are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present disclosure, and are not to be construed as limitations of the present disclosure. On the contrary, the embodiments of the present disclosure include all changes, modifications, and equivalents that fall within the spirit and connotation of the appended claims.

[0029] like Figure 1 and Figure 2As shown, an embodiment of the present disclosure proposes a measuring device, including: a base 1, a bracket 2, at least one first measuring module 3, at least one second measuring module 4 and a processing module 5, the bracket 2 is rotatably set on the base 1, the first measuring module 3 is set on the bracket 2, and the first measuring module 3 is used to measure the distance between the first measuring module 3 and the target object, the second measuring module 4 is set on the bracket 2, and the second measuring module 4 is used to measure the rotation angle of the bracket 2, the processing module 5 is set on the base 1, and the communication end of the processing module 5 is respectively connected to the communication end of the first measuring module 3 and the communication end of the second measuring module 4.

[0030] It can be understood that, since the bracket 2 is rotatably set on the base 1, and the first measuring module 3 and the second measuring module 4 are respectively set on the bracket 2, the first measuring module 3 and the second measuring module 4 can move with the bracket 2, so that when the bracket 2 rotates to a preset position, the first measuring module 3 can measure the distance between the first measuring module 3 and the target object, and the second measuring module 4 can measure the rotation angle of the bracket 2. At the same time, since the communication end of the processing module 5 is respectively connected to the communication end of the first measuring module 3 and the communication end of the second measuring module 4, the processing module 5 can obtain the distance data of the first measuring module 3 and the angle data of the second measuring module 4, and then realize different measurement items according to the distance data and the angle data.

[0031] Among them, since the main parts of the measuring device are the rotating bracket 2 and the first measuring module 3 and the second measuring module 4 arranged on the bracket 2, the structure is relatively simple, so the overall cost of use is low, and the bracket 2, the first measuring module 3, the second measuring module 4 and the processing module 5 are all arranged on the base 1, and the overall integration is high, so it is easy to carry and more convenient to use, thereby meeting the low-cost and high-efficiency measurement needs.

[0032] It should be noted that the base 1 is used to support the bracket 2, the processing module 5, etc. The specific type of the base 1 can be set according to actual needs and is not limited to this. For example, the base 1 can be a circular base structure, and the rotating shaft of the bracket 2 is rotatably set at the center of the base 1 through a bearing, and the processing module 5 is set on the base 1 and the processing module 5 is away from the rotation path of the bracket 2.

[0033] The bracket 2 is used to carry the first measuring module 3 and the second measuring module 4. The specific type of the bracket 2 can be set according to actual needs and is not limited to this. For example, the bracket 2 can be a bar-shaped seat structure, the rotating shaft of the bracket 2 is located at the first end of the bracket 2, and the first measuring module 3 and the second measuring module 4 are located at the second end of the bracket 2.

[0034] The first measuring module 3 is used to measure the distance, and the specific type of the first measuring module 3 can be set according to actual needs, and there is no limitation on this. The measuring direction of the first measuring module 3 can be located in the length direction of the bracket 2, that is, when the second end of the bracket 2 and the target object are arranged relative to each other, the measuring end of the first measuring module 3 measures the distance between the second end of the bracket 2 and the target object along the radial direction of the rotating shaft of the bracket 2.

[0035] The second measuring module 4 is used to measure the rotation angle. The specific type of the second measuring module 4 can be set according to actual needs and is not limited to this.

[0036] The processing module 5 is used to perform calculations and processing based on the spacing data and the angle data to achieve different measurement items. For example, the processing module 5 can measure the verticality, straightness, circle radius (or circle area), surface flatness, the angle between two intersecting planes, the distance between two points, the cross-sectional profile, etc. of the target object based on the spacing data and the angle data. The specific type of the processing module 5 can be set according to actual needs and is not limited to this. For example, the processing module 5 can be a controller, a microcontroller unit, a single-chip microcomputer, etc.

[0037] Among them, in the relevant embodiments, different measurement items often need to replace different instruments or equipment, such as verticality detection using total station, ruler, pendulum, etc., straightness detection using knife edge ruler, feeler gauge, etc., circle radius (or roundness) detection using vernier caliper, etc., flatness detection using ruler, feeler gauge, flatness detector, etc., angle measurement of two intersecting planes using protractor, angle measuring instrument, etc., distance detection between two points using ruler, tape measure, laser rangefinder, etc., cross-section profile detection using profiler (probe), 3D scanner, photogrammetry, etc. In this embodiment, the processing module 5 can realize the measurement of the above items according to the spacing data and angle data.

[0038] like Figure 1 and Figure 3 As shown, in some embodiments, the measuring device further includes: a protective cover 6 and an opening, the protective cover 6 is arranged on the base 1, and a accommodating cavity is formed between the protective cover 6 and the base 1, the bracket 2 and the processing module 5 are respectively located in the accommodating cavity, the opening is arranged on the protective cover 6 along the circumference of the rotating axis of the bracket 2, and the opening and the accommodating cavity are connected; wherein, when the measuring end of the first measuring module 3 is located at the opening, the first measuring module 3 is used to measure the distance between the first measuring module 3 and the target object through the opening.

[0039] It can be understood that since the bracket 2 and the processing module 5 are respectively located in the accommodating cavity formed between the protective cover 6 and the base 1, the processing module 5 and the bracket 2 as well as the first measuring module 3 and the second measuring module 4 on the bracket 2 can be protected by the protective cover 6, thereby ensuring the stable operation of the measuring device. At the same time, since the opening is arranged on the protective cover 6 along the circumference of the rotating axis of the bracket 2, and the opening is connected to the accommodating cavity, when the measuring end of the first measuring module 3 is located at the opening, the distance between the first measuring module 3 and the target object can be measured through the opening, thereby achieving protection by using the protective cover 6 while avoiding the protective cover 6 from affecting the measurement of the first measuring module 3.

[0040] It should be noted that the protective cover 6 is used to cooperate with the base 1 to form a accommodating cavity to accommodate the processing module 5 and the bracket 2 as well as the first measuring module 3 and the second measuring module 4 on the bracket 2. The specific type of the protective cover 6 can be set according to actual needs and is not limited to this. For example, the protective cover 6 can be a cover structure that is close to a fan shape, and the central axis of the protective cover 6 coincides with the central axis of the base 1, and an opening is formed on one side of the protective cover 6.

[0041] like Figure 1 As shown, in some embodiments, the measuring device further comprises: a light-transmitting cover 7, which is disposed on the opening.

[0042] It is understandable that, since the light-transmitting cover 7 is arranged on the opening, it can not only realize the sealing protection of the accommodating cavity to prevent the entry of external impurities such as dust and water stains, but also utilize the light-transmitting property of the light-transmitting cover 7 to ensure the stable ranging of the first measuring module 3.

[0043] It should be noted that the light-transmitting cover 7 is used for the passage of light, and the specific type of the light-transmitting cover 7 can be set according to actual needs, and there is no limitation on this. For example, the light-transmitting cover 7 can be made of plexiglass, tempered glass, etc. The shape of the light-transmitting cover 7 is adapted to the shape of the opening. After the light-transmitting cover 7 is covered on the opening, the light-transmitting cover 7 and the protective cover 6 can form a circular cover structure.

[0044] like Figure 1 As shown, in some embodiments, the measuring device further includes: a knob 8, the knob 8 is disposed on the bracket 2, and the central axis of the knob 8 coincides with the central axis of the rotating shaft of the bracket 2.

[0045] It can be understood that since the knob 8 is set on the bracket 2, and the central axis of the knob 8 coincides with the central axis of the rotating shaft of the bracket 2, the knob 8 can drive the bracket 2 to rotate synchronously, thereby facilitating the measurement personnel to use the rotation of the knob 8 to make the first measurement module 3 and the second measurement module 4 on the bracket 2 face different target objects, thereby realizing different measurement functions.

[0046] It should be noted that the knob 8 is used to drive the bracket 2 to rotate. The specific type of the knob 8 can be set according to actual needs and is not limited to this. For example, the knob 8 is a disc-shaped structure with anti-slip grooves on its circumference. The knob 8 is mounted on the rotating shaft of the bracket 2 and is located outside the accommodating cavity.

[0047] In some embodiments, the measuring device further includes: a damper, which is arranged between the rotating shaft of the bracket 2 and the base 1.

[0048] It can be understood that since the damper is arranged between the rotating shaft of the bracket 2 and the base 1, the bracket 2 can use the damping force of the damper to achieve positioning, thereby ensuring that the first measuring module 3 can stably measure the distance between the first measuring module 3 and the target object, and the second measuring module 4 can stably measure the rotation angle of the bracket 2, thereby ensuring a higher measurement accuracy of the measuring device.

[0049] It should be noted that the damper is used to apply a rotational damping force on the bracket 2. When the external force is greater than the damping force of the damper, the bracket 2 rotates. When the external force is not greater than the damping force of the damper, the bracket 2 does not rotate. The specific type of the damper can be set according to actual needs and is not limited to this. For example, the damper has an inner ring and an outer ring, the inner ring is arranged on the base 1, and the outer ring is arranged on the rotating shaft of the bracket 2. The friction force between the inner ring and the outer ring is the damping force.

[0050] like Figure 2 As shown, in some embodiments, the measuring device also includes: a driving motor 9, which is arranged on the base 1, and the output shaft of the driving motor 9 is connected to the rotating shaft of the bracket 2, and the input end of the driving motor 9 is connected to the output end of the processing module 5.

[0051] It can be understood that since the output shaft of the drive motor 9 is connected to the rotating shaft of the bracket 2, and the input end of the drive motor 9 is connected to the output end of the processing module 5, the drive motor 9 can drive the bracket 2 to rotate under the control of the processing module 5, so that the first measuring module 3 and the second measuring module 4 on the bracket 2 can face different target objects, thereby realizing different measurement functions.

[0052] It should be noted that the drive motor 9 is used to drive the bracket 2 to rotate. The specific type of the drive motor 9 can be set according to actual needs and is not limited to this. Among them, the drive motor 9 can directly drive the bracket 2 to rotate, and can also indirectly drive the bracket 2 to rotate through transmission components such as gears.

[0053] In some embodiments, the measuring device also includes: a rotating gimbal, and the base 1 is arranged at the rotating end of the rotating gimbal; wherein the center axis of the rotating shaft of the bracket 2 is parallel to the center axis of the rotating end of the rotating gimbal, or the center axis of the rotating shaft of the bracket 2 is perpendicular to the center axis of the rotating end of the rotating gimbal.

[0054] It is understandable that, since the base 1 is arranged at the rotating end of the rotating platform, the base 1 can adjust the angle using the rotating platform, so that the measuring device can measure different target objects or different positions of the target objects, thereby achieving different measurement functions.

[0055] It should be noted that the rotating platform is used to rotate the base 1, and the specific type of the rotating platform can be set according to actual needs and is not limited to this. Figure 3 As shown, the base 1 can be provided with a first mounting hole 12 arranged along its axial direction, and the protective cover 6 can be provided with a second mounting hole 13 arranged along its radial direction. When the base 1 is installed on the rotating end of the rotating head using the first mounting hole 12, the central axis of the rotating shaft of the bracket 2 is parallel to the central axis of the rotating end of the rotating head; when the base 1 is installed on the rotating end of the rotating head using the second mounting hole 13, the central axis of the rotating shaft of the bracket 2 is perpendicular to the central axis of the rotating end of the rotating head.

[0056] like Figure 1 and Figure 2 As shown, in some embodiments, the measuring device further includes: a display 10 , which is disposed on the base 1 , and an input end of the display 10 is connected to an output end of the processing module 5 .

[0057] It is understandable that, since the input end of the display 10 is connected to the output end of the processing module 5, the processing module 5 can use the display 10 to display the measurement data, thereby facilitating intuitive observation by measurement personnel and making the use of the measurement device more convenient.

[0058] It should be noted that the specific type of the display 10 can be set according to actual needs, and there is no limitation on this. The display 10 can be set on the protective cover 6.

[0059] like Figure 1 and Figure 2 As shown, in some embodiments, the measuring device further includes: a plurality of buttons 11 , the buttons 11 are arranged on the base 1 , and the output end of the buttons 11 is connected to the input end of the processing module 5 .

[0060] It is understandable that, since the output end of the button 11 is connected to the input end of the processing module 5, the processing module 5 can receive external instructions using the button 11, thereby facilitating the control of the measurement personnel and making the use of the measurement device more convenient.

[0061] It should be noted that the specific type of the button 11 can be set according to actual needs and is not limited thereto. Among them, multiple buttons 11 can be set on the protective cover 6, and multiple buttons 11 are arranged on both sides of the display 10. The button 11 can be used for forward and reverse control of the drive motor 9, switch control, etc., and can be used for data measurement control, display control, etc.

[0062] In some embodiments, the first measurement module 3 includes: a laser rangefinder, the laser rangefinder is arranged on the bracket 2, and the communication end of the laser rangefinder is connected to the communication end of the processing module 5;

[0063] It can be understood that, since the laser rangefinder is arranged on the bracket 2, the laser rangefinder can move with the bracket 2, so that when the bracket 2 rotates to a preset position, the laser rangefinder can use laser to measure the distance between the laser rangefinder and the target object. At the same time, since the communication end of the laser rangefinder is connected to the communication end of the processing module 5, the processing module 5 can obtain the distance data of the laser rangefinder, and then implement different measurement items according to the distance data.

[0064] Among them, since the laser rangefinder uses laser to achieve non-contact measurement of the distance, the measuring device realizes remote measurement, thereby increasing the overall measurement range and flexibility, and making the use of the measuring device more convenient.

[0065] It should be noted that the specific type of the laser rangefinder can be set according to actual needs and is not limited to this.

[0066] In some embodiments, the second measuring module 4 includes: a three-axis angle sensor or a gyroscope, the three-axis angle sensor is arranged on the bracket 2, and the communication end of the three-axis angle sensor is connected to the communication end of the processing module 5, and the gyroscope is arranged on the bracket 2, and the communication end of the gyroscope is connected to the communication end of the processing module 5.

[0067] It can be understood that since the three-axis angle sensor or gyroscope is arranged on the bracket 2, the three-axis angle sensor or gyroscope can move with the bracket 2, so that when the bracket 2 rotates to a preset position, the three-axis angle sensor or gyroscope can measure the rotation angle of the bracket 2. At the same time, since the communication end of the three-axis angle sensor or gyroscope is connected to the communication end of the processing module 5, the processing module 5 can obtain the angle data of the three-axis angle sensor or gyroscope, and then implement different measurement items according to the angle data.

[0068] It should be noted that the specific types of the three-axis angle sensor and the gyroscope can be set according to actual needs and are not limited to this.

[0069] Based on the measuring device of this embodiment, the corresponding measuring items can be realized in the following manner. Among them, the first measuring module 3 can use the rotation of the bracket 2 to emit lasers in different directions. Due to the excellent directivity of the laser, the laser beams in different directions can be regarded as different vectors. Therefore, the angle between the laser beams is converted into the angle of the vector to be solved. Figure 4 As shown, let a and b be two unit vectors, they intersect at point O, the angles between vector a and the three coordinate axes are set to (α1, β1, θ1), and the angles between vector b and the three coordinate axes are set to (α2, β2, θ2). Then the angle between vector a and vector b is It can be calculated using the "scalar product of vectors" formula:

[0070]

[0071] Therefore, after the second measuring module 4 measures the three-axis angle, the angle between the two laser beams can be calculated according to the three-axis angle, so the angle between the laser beams can be regarded as a known condition.

[0072] For example, verticality refers to the verticality of the surface of an object relative to the ground plane. If the verticality detection is between two planes (such as two walls, a wall and a ceiling, etc.), the plane angle detection function in this embodiment can be used.

[0073] When the verticality is detected, the posture of the base 1 needs to be adjusted using a rotating pan-tilt platform to ensure that the plane where the laser beam is located is perpendicular to the horizontal plane.

[0074] like Figure 5 and Figure 6 As shown, OP is a horizontal line, CP and OP are perpendicular to each other and intersect at point P, AB is the measured plane of the target object, and the measuring device of this embodiment is located at point O. First, the first measuring module 3 is adjusted by rotating the bracket 2 so that the laser beam emitted by the first measuring module 3 is irradiated to point A. The distance between AO and its inclination angle ∠POA are measured by the first measuring module 3 and the second measuring module 4 respectively to obtain the first set of data (negative when the inclination is lower than the horizontal plane, and positive otherwise); then, the laser beam emitted by the first measuring module 3 is irradiated to point B in the same way to test the distance between BO and the inclination angle ∠BOP, which is the second set of data. Therefore, according to the "scalar product of vectors" formula, the angle between the two beams, that is, the value of ∠AOB, can be calculated. The inclination angle of the line AB between point A and point B and the vertical direction is represented by the angle ∠BAC. Obviously, the tangent value of ∠BAC is the verticality value BC / AC.

[0075] Therefore, the mathematical process of verticality calculation is:

[0076] Given AO, BO, ∠POA and ∠AOB, find ∠BAC.

[0077] based on:

[0078] AB 2 =AO 2 +BO 2 -2AO×BO×cos(∠AOB);

[0079]

[0080] It turns out that:

[0081] ∠BAC=90-(∠BAO±∠POA);

[0082] Among them, for the ± sign in the formula, when point A is below the horizontal plane, it is positive, otherwise it is negative. Obviously, according to the positive and negative of ∠BAC, the direction of the tilt can be determined. When its value is positive, it means inward tilt toward the location of the measuring device (i.e. the example effect in the figure), otherwise it is outward tilt. Through this method, multiple measuring points can be remotely measured on a straight line, and only the emission angle of the laser beam needs to be adjusted.

[0083] For example, flatness refers to the flatness of a surface or object, and is usually used to describe the smoothness or undulation of a plane, road surface, workpiece surface, etc. It can be evaluated by measuring the height difference or waviness between points on the surface; straightness refers to the straight shape or straightness of a line or an object, and it describes the degree to which a line or object deviates from an ideal straight line in a specific direction. Therefore, flatness and straightness both indicate the degree of unevenness in a certain sense, the difference being that flatness refers to a surface, while straightness is in a straight line direction.

[0084] like Figure 7 As shown, the measuring device of this embodiment is still located at point O, ABC is the measured surface or line of the target object, and the direction of the first measuring module 3 is adjusted by rotating the bracket 2, so that the laser beam emitted by the first measuring module 3 is successively irradiated on points A and B of the measured surface (or measured straight line), and the length of the test area is determined by points A and B. Then the direction of the first measuring module 3 is further adjusted to irradiate on point C. Through a series of measurements, the elevation difference △H between different positions between AB and the line connecting AB can be measured. Multiple △Hs form a set, and the difference between the maximum positive value and the minimum negative value in the set is the straightness in this direction.

[0085] When measuring the flatness of a surface, it is necessary to measure the straightness in multiple directions and then take the maximum value, which is the flatness of the plane.

[0086] Therefore, the mathematical process of calculating the elevation difference △H is:

[0087] Given AO, BO, CO, ∠AOB and ∠AOC, calculate the angle ∠BAC, and then calculate △H based on ∠BAC.

[0088] based on:

[0089] AB 2 =AO 2 +BO 2 -2AO×BO×cos(∠AOB);

[0090]

[0091] It turns out that:

[0092] ∠BAC=∠CAO-∠BAO;

[0093] ΔH n =AC×sin(∠BAC);

[0094] ΔL n =AC×cos(∠BAC);

[0095] Among them, △H is the elevation difference of the measurement position in the direction of the straight line. According to the positive or negative value of ∠BAC, it can be determined whether point C is concave or convex relative to the AB line. When the value is positive, it means that point C is concave relative to the AB line, otherwise, it is convex.

[0096] After calibrating points A and B, multiple △H values ​​can be obtained by rotating the first measuring module 3 to form a set. The difference between the maximum positive value and the minimum negative value in the set is the straightness. Obviously, through this method, in some application scenarios, it is also possible to determine whether two objects are in a centered or aligned state, because when △H=0, points A, B, and C are collinear.

[0097] For example, in vector measurement, the measuring device is used as the origin to measure the length and azimuth between the measured point of the target object and the origin. This function can be used to measure some measurement items that require special processing methods, such as the verticality detection of conical high-rise buildings such as wind turbine towers. Generally speaking, for safety reasons, wind turbine towers have a certain taper, and the bottom circle radius is slightly larger than the top circle radius. Therefore, the tower surface has a certain inclination, and its verticality detection needs to be converted into calibration of the center of the circle.

[0098] In the verticality measurement of a wind turbine, a total station is often used to measure several points on the upper and lower levels, and then some mathematical methods are used to calculate the verticality. The measuring device of this embodiment can also be used for the verticality detection of the wind turbine tower.

[0099] like Figure 8As shown, the measuring device of this embodiment is still located at point O, and the inclination angle of the first measuring module 3 is adjusted so that the laser beam emitted by the first measuring module 3 is irradiated on point a of the measuring area at the bottom of the tower. The length and azimuth of the light beam Oa form a vector, the length of the vector is L1, and the angles with the three coordinate axes are (α1, β1, θ1); then, the rotation of the rotating pan is used to make the laser beam irradiate points b and c in turn, and another two vectors are obtained, with lengths of L2 and L3, respectively, and angles with the three coordinate axes are (α2, β2, θ2) and (α3, β3, θ3), respectively.

[0100] Among them, the rectangular coordinates of points a, b and c are:

[0101] Point A:

[0102] x1=L1×cosα1;

[0103] y1=L1×cosβ1;

[0104] z1=L1×cosθ1;

[0105] Point b:

[0106] x2=L2×cosα2;

[0107] y2=L2×cosβ2;

[0108] z2=L2×cosθ2;

[0109] Point C:

[0110] x3=L3×cosα3;

[0111] y3=L3×cosβ3;

[0112] z3=L3×cosθ3.

[0113] Since the pan-tilt head rotates around the z-axis, θ1=θ2=θ3.

[0114] According to the law of determining a circle by three non-collinear points, let the coordinates of the center point P be (x0, y0) and the radius of the circle be R, then:

[0115] (x1-x0) 2 +(y1-y0) 2 =R 2 ;

[0116] (x2-x0) 2 +(y2-y0) 2 =R 2 ;

[0117] (x3-x0) 2 +(y3-y0)2 =R 2 ;

[0118] Among them, there are three unknown variables and three equations. By combining the three equations, we can find the coordinates of the center of the circle and the radius of the circle.

[0119] The inclination angle of the first measuring module 3 is adjusted so that the laser beam emitted by the first measuring module 3 irradiates the measuring area at the top of the tower. Similarly, three sets of data are measured by rotating the rotating pan / tilt table.

[0120] Through the same mathematical processing, the coordinates of the center P' of the top measurement area (x0, y0) can be obtained. The distance between the center of the bottom measurement area and the center of the top measurement area on the plane projection is:

[0121]

[0122] If △R is 0, it means that the tower is vertical. The height H between the two measurement layers can be calculated from the Z-axis coordinate of the measurement point. The verticality of the wind turbine tower is:

[0123] Verticality = ΔR / H;

[0124] Obviously, according to the coordinates of points P' and P, the inclination direction of the tower can also be obtained.

[0125] This embodiment only provides a measuring device for measuring spacing and angles, and only gives some application scenarios of the measuring device. The calculation principles for measurement items such as circle radius (or circle area), the angle between two intersecting planes, the distance between two points, and cross-sectional profile are not listed here one by one.

[0126] It should be noted that, in the description of the present disclosure, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of the present disclosure, unless otherwise specified, the meaning of "plurality" is two or more.

[0127] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code that includes one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present disclosure includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present disclosure belong.

[0128] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0129] Although the embodiments of the present disclosure have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present disclosure. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present disclosure.

Claims

1. A measuring device, characterized in that: include: Base; A bracket, the bracket being rotatably disposed on the base; at least one first measuring module, wherein the first measuring module is disposed on the bracket and is used to measure a distance between the first measuring module and a target object; at least one second measuring module, the second measuring module being disposed on the bracket and being used to measure a rotation angle of the bracket; A processing module is disposed on the base, and a communication end of the processing module is respectively connected to a communication end of the first measuring module and a communication end of the second measuring module.

2. The measuring device according to claim 1, characterized in that The measuring device also includes: A protective cover, wherein the protective cover is disposed on the base, and a receiving cavity is formed between the protective cover and the base, and the bracket and the processing module are respectively located in the receiving cavity; An opening, wherein the opening is arranged on the protective cover along the circumference of the support shaft, and the opening is communicated with the accommodating cavity; When the measuring end of the first measuring module is located at the opening, the first measuring module is used to measure the distance between the first measuring module and the target object through the opening.

3. The measuring device according to claim 2, characterized in that The measuring device also includes: A light-transmitting cover is disposed on the opening.

4. The measuring device according to claim 1, characterized in that The measuring device also includes: A knob is arranged on the bracket, and a central axis of the knob coincides with a central axis of the bracket shaft.

5. The measuring device according to claim 4, characterized in that The measuring device also includes: A damper is arranged between the rotating shaft of the bracket and the base.

6. The measuring device according to claim 1, characterized in that The measuring device also includes: A driving motor is arranged on the base, and an output shaft of the driving motor is drivingly connected to a rotating shaft of the bracket, and an input end of the driving motor is connected to an output end of the processing module.

7. The measuring device according to claim 1, characterized in that The measuring device also includes: A rotating platform, wherein the base is arranged at a rotating end of the rotating platform; Wherein, the central axis of the bracket rotating shaft is parallel to the central axis of the rotating end of the rotating gimbal, or the central axis of the bracket rotating shaft is perpendicular to the central axis of the rotating end of the rotating gimbal.

8. The measuring device according to claim 1, characterized in that The measuring device also includes: A display is arranged on the base, and an input end of the display is connected to an output end of the processing module.

9. The measuring device according to claim 1, characterized in that The measuring device also includes: A plurality of buttons are provided on the base, and the output ends of the buttons are connected to the input end of the processing module.

10. The measuring device according to claim 1, characterized in that The first measurement module comprises: a laser rangefinder, the laser rangefinder is arranged on the bracket, and a communication end of the laser rangefinder is connected to a communication end of the processing module; and / or The second measuring module includes: a three-axis angle sensor or a gyroscope, the three-axis angle sensor is arranged on the bracket, and the communication end of the three-axis angle sensor is connected to the communication end of the processing module, and the gyroscope is arranged on the bracket, and the communication end of the gyroscope is connected to the communication end of the processing module.

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