Ultrasonic distance measuring device

Abstract

The invention discloses an ultrasonic distance measuring device, which belongs to the field of measurement technology. It comprises a tripod, an ultrasonic distance meter and a connecting rope, a telescopic calibration component is installed on the tripod, an adjustment component is installed on the calibration component, the ultrasonic distance meter is plugged and positioned in the adjustment component, a leveling component is installed on the tripod, one end of the connecting rope is fixedly connected to the leveling component, and the other end is fixedly connected to a detection column; a plurality of photoelectric sensors are fixedly installed on the leveling component. The present invention can effectively calibrate the ultrasonic distance meter in different environments through the setting of the calibration component, and improve the adaptability of distance measurement in different environments; before distance measurement, the ultrasonic distance meter can be horizontally calibrated through the coordinated detection and adjustment of the tripod, the detection column and the photoelectric sensor, thereby avoiding the problem of the tilt angle between the ultrasonic distance meter and the measured object, and improving the accuracy of measurement.

Description

Technical Field

[0001] The present invention relates to the field of measurement technology, and more specifically, to an ultrasonic distance measuring device. Background Art

[0002] Ultrasonic ranging is a commonly used distance measurement technology that determines the distance between an object and a sensor by the propagation speed of ultrasonic waves.

[0003] In ultrasonic ranging, when the sensor probe is not perpendicular to the object being measured, triangulation errors are easily generated due to the deviation of the reflection path of the sound wave. Moreover, under the influence of different environmental factors such as temperature or humidity, if initial calibration is not performed, the measurement will be biased, affecting the measurement results. In view of this, we propose an ultrasonic ranging device. Summary of the invention

[0004] The object of the present invention is to provide an ultrasonic ranging device that solves at least one of the above-mentioned technical problems and achieves the technical effect of reducing the difficulty of measurement and calibration and improving the flexibility and accuracy of measurement.

[0005] The embodiment of the present invention provides an ultrasonic distance measuring device, including a tripod, an ultrasonic distance measuring instrument and a connecting rope, wherein the ultrasonic distance measuring instrument is used for distance measuring;

[0006] The tripod is provided with a telescopic calibration assembly for calibrating the ultrasonic rangefinder;

[0007] The calibration component is equipped with an adjustment component, the ultrasonic rangefinder is plugged and positioned on the adjustment component, and the adjustment component is used to adjust the distance measuring direction of the ultrasonic rangefinder;

[0008] The tripod is provided with a leveling assembly, one end of the connecting rope is fixedly connected to the leveling assembly, and the other end is fixedly connected to a detection column, which hangs freely and is used to determine the horizontal plane;

[0009] A number of photoelectric sensors are fixedly mounted on the leveling assembly to sense the position of the detection column;

[0010] The fixing point of the connecting rope and the leveling component is located on the axis of the leveling component, and the sensing light beams of a plurality of the photoelectric sensors intersect on the axis of the leveling component.

[0011] By adopting the above technical solution and setting the calibration component, the ultrasonic rangefinder in different environments can be effectively calibrated, thereby improving the adaptability of ranging in different environments, and the calibration component is retractable, which reduces the space occupied; before ranging, the ultrasonic rangefinder can be horizontally calibrated through the coordinated detection and adjustment of the tripod, the detection column and the photoelectric sensor, thereby avoiding the problem of the tilt angle between the ultrasonic rangefinder and the measured object, and improving the measurement accuracy; during measurement, the adjustment component can drive the ultrasonic rangefinder to rotate in a directional manner, thereby realizing multi-directional ranging of a single measuring point and improving the flexibility of ranging.

[0012] As an optional solution of the technical solution of the present invention, the tripod includes a supporting seat and a plurality of connecting frames, the supporting seat is rotatably connected to a plurality of guide frames, the connecting frame is slidably connected to the guide frame, an electric push rod is fixedly installed on the guide frame, the output shaft of the electric push rod is fixedly connected to the connecting frame, the electric push rod is used to push the connecting frame to slide on the guide frame, an adjusting rod is slidably connected to the connecting frame, the adjusting rod is fixed to the connecting frame by a fastening bolt, and a foot is fixedly installed on the end of the adjusting rod away from the guide frame for support.

[0013] By adopting the above technical solution, the connecting frame has a set rotation range, so that the plurality of feet can be spread out to form a certain angle, thereby improving the stability of the support, and when the plurality of connecting frames are closed, the overall space occupied by the tripod can be reduced, thereby reducing the difficulty of carrying the tripod;

[0014] The setting of the adjusting rod and the electric push rod, when it is necessary to adjust the height of the support seat over a large range or adjust the support length on one side, the relative position of the adjusting rod and the connecting frame is controlled to increase the adjustable range and fixed by tightening bolts to ensure the stability of the adjusting rod and the connecting frame. When performing precise adjustment in a small range, the output shaft of the electric push rod pushes the connecting frame to move, thereby adjusting the relative position of the connecting frame and the guide frame, achieving precise fine-tuning of the telescopic length, and reducing the difficulty of leveling the support seat and the ultrasonic rangefinder after installation.

[0015] As an optional solution of the technical solution of the document of the present invention, the calibration assembly includes a fixed box and a plurality of telescopic plates, one end of the fixed box is open, the plurality of telescopic plates are slidably connected to each other, the calibration plate is rotatably connected to the uppermost telescopic plate, and the lowermost telescopic plate is slidably connected to the fixed box;

[0016] The open end of the fixing box is slidably connected with a baffle and fixed by a limiting rod, and the baffle is used to limit the telescopic plate.

[0017] As an optional solution of the technical solution of the document of the present invention, the total height of the several telescopic plates after contraction is equal to the inner cavity height of the fixed box, and the height of the calibration plate folded on the telescopic plate is equal to the height of the upper surface of the corresponding telescopic plate.

[0018] As an optional solution of the technical solution of the document of the present invention, a scale line is provided on one side of the telescopic plate, and the scale line is located on the same side of the plurality of telescopic plates;

[0019] From the uppermost telescopic plate to the lowermost telescopic plate, the scale values ​​increase successively.

[0020] By adopting the above technical solution and setting the scale value, the position of the calibration plate can be effectively determined, thereby ensuring the subsequent calibration accuracy of the ultrasonic rangefinder.

[0021] As an optional solution of the technical solution of the present invention, the adjustment component includes a motor and a rotating table, the motor is fixedly mounted on the fixed box, a support shaft is fixedly mounted on the rotating table, the rotating table is rotatably connected to the fixed box through the support shaft, the output shaft of the motor is fixedly connected to the first gear, the support shaft is fixedly mounted with a second gear, and the first gear and the second gear are meshed for transmission;

[0022] A plurality of positioning columns are fixedly mounted on the rotating platform, a plurality of positioning sleeves are embedded in the ultrasonic rangefinder, and the positioning columns are plug-fitted with corresponding positioning sleeves and fixed by fasteners.

[0023] By adopting the above technical solution, the ultrasonic rangefinder is fixed on the positioning column, which improves the stability of the ultrasonic rangefinder during distance measurement. At the same time, the ultrasonic rangefinder on the adjustment component can perform initial measurement accuracy adjustment through the calibration plate, thereby adapting to the measurement requirements of different environments and improving the measurement accuracy.

[0024] As an optional solution of the technical solution of the document of the present invention, the adjustment component also includes an angle sensor for detecting the rotation angle of the turntable. A control screen is fixedly mounted on the fixed box, and the electric push rod, motor, angle sensor and ultrasonic rangefinder are all electrically connected to the control screen.

[0025] As an optional solution of the technical solution of the document of the present invention, the leveling assembly includes a fixed cylinder and a threaded tube, the fixed cylinder is fixedly installed on the support seat, the threaded tube is threadedly matched with the fixed cylinder, the inner side of the threaded tube is rotatably connected with a connecting cylinder, the connecting cylinder is slidably connected with the fixed cylinder, and the axis of the fixed cylinder is collinear with the axis of the connecting cylinder;

[0026] The connecting rope is fixedly mounted on the fixing cylinder, and the fixing points at both ends of the connecting rope are respectively located on the axes of the fixing cylinder and the detection column;

[0027] The connecting tube is provided with a detection hole, which is coaxial with the connecting tube. A plurality of photoelectric sensors are fixedly mounted on the connecting tube and are arrayed around the detection hole. The detection light beams of the plurality of photoelectric sensors intersect on the extended axis of the detection hole.

[0028] By adopting the above technical solution, the ultrasonic rangefinder after installation can be manually or automatically leveled. During leveling, the threaded tube is screwed out of the fixing tube, and the detection column naturally hangs down. During manual adjustment, the relative positions of the connecting frame and the adjusting rod are adjusted and fixed, so that the sensing of several photoelectric sensors is interrupted. At this time, the detection column is at the center of the detection hole, and manual leveling is completed; during automatic leveling, the relative positions of the connecting frame and the adjusting rod are preliminarily adjusted and fixed, so that the ultrasonic rangefinder is at a suitable measuring height, and several electric push rods work together to move the ultrasonic rangefinder in any direction. When the photoelectric sensor does not detect the detection column within the set adjustment range, the several electric push rods work together to control the detection column. Move in the opposite direction until a group of photoelectric sensors sense the detection column and stop. According to the installation position of the sensed photoelectric sensors, several electric push rods control the switching adjustment direction to be along the detection direction of the photoelectric sensor, and adjust again. If other photoelectric sensors do not detect the detection column within the set adjustment range, several electric push rods work together to control the detection column to move in the opposite direction until another group of photoelectric sensors senses the detection column and stops, thereby completing the leveling. By adjusting the level of the ultrasonic rangefinder, it can be ensured that the distance of the measured object can be accurately reflected during the measurement process, effectively reducing the measurement error caused by the tilt angle between the ultrasonic rangefinder and the measured object, and improving the measurement accuracy and reliability.

[0029] As an optional solution of the technical solution of the document of the present invention, a protective tube is fixedly installed on the connecting tube, the inner diameter of the protective tube is larger than the outer diameter of the detection column, and the axis of the protective tube is colinear with the axis of the detection hole.

[0030] As an optional solution of the technical solution of the document of the present invention, the mouth of the protective tube is trumpet-shaped, and the inner diameter of the cross-section of the mouth of the protective tube gradually decreases from top to bottom.

[0031] By adopting the above technical solution, after the measurement is completed, the threaded tube moves up and is locked with the fixed tube thread, and the detection column is inserted into the protective tube and moves up accordingly, thereby effectively protecting the detection column and reducing the risk of damage to the detection column; during detection, the protective tube moves down synchronously with the threaded tube, and when it falls to the bottom, the end of the detection column is separated from the protective tube to avoid affecting the measurement. By lowering the detection column to a certain height during measurement, when the inclination is small, the swing range of the detection column can be effectively increased, thereby improving the accuracy of leveling.

[0032] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0033] 1. The present invention can effectively calibrate the ultrasonic rangefinder in different environments by setting the calibration component, thereby improving the adaptability of ranging in different environments, and the calibration component is retractable, which reduces the space occupied; before ranging, the ultrasonic rangefinder can be horizontally calibrated through the coordinated detection and adjustment of the tripod, the detection column and the photoelectric sensor, and the ultrasonic rangefinder can be horizontally adjusted to ensure that the distance of the measured object can be accurately reflected during the measurement process, effectively reduce the measurement error caused by the tilt angle between the ultrasonic rangefinder and the measured object, and improve the measurement accuracy and reliability.

[0034] 2. When measuring distance, the adjustment component of the present invention can drive the ultrasonic rangefinder to rotate in a directional manner, thereby realizing multi-directional rapid ranging of a single measuring point and improving the efficiency and flexibility of ranging.

[0035] 3. The present invention can effectively determine the extension position of the calibration plate by setting the scale value on the telescopic plate, thereby ensuring the subsequent calibration accuracy of the ultrasonic rangefinder.

[0036] 4. The ultrasonic rangefinder of the present invention has two leveling modes, namely manual adjustment and automatic adjustment, and the surveyor can select and control them according to needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 A schematic diagram of the overall structure of an ultrasonic distance measuring device disclosed in a preferred embodiment of the present invention;

[0038] Figure 2 A schematic diagram of the connection structure of a tripod and a leveling component of an ultrasonic distance measuring device disclosed in a preferred embodiment of the present invention;

[0039] Figure 3 A schematic diagram of the position distribution of positioning posts of an ultrasonic distance measuring device disclosed in a preferred embodiment of the present invention;

[0040] Figure 4 A schematic diagram of the transmission structure of an adjustment component of an ultrasonic distance measuring device disclosed in a preferred embodiment of the present invention;

[0041] Figure 5 A schematic diagram of a calibration plate of an ultrasonic distance measuring device disclosed in a preferred embodiment of the present invention;

[0042] Figure 6 A schematic diagram of the structure of an ultrasonic distance measuring device of an ultrasonic distance measuring device disclosed in a preferred embodiment of the present invention;

[0043] Figure 7 A schematic diagram of the position distribution of a positioning sleeve of an ultrasonic distance measuring device disclosed in a preferred embodiment of the present invention;

[0044] Figure 8 A partial cross-sectional view of an ultrasonic distance measuring device disclosed in a preferred embodiment of the present invention;

[0045] Fig. 9 A schematic diagram of the installation distribution of photoelectric sensors of an ultrasonic distance measuring device disclosed in a preferred embodiment of the present invention;

[0046] Fig.10 A calibration principle diagram of an ultrasonic distance measuring device disclosed in a preferred embodiment of the present invention.

[0047] Explanation of the numbers in the figure: 1. Tripod; 2. Ultrasonic rangefinder; 3. Calibration component; 4. Adjustment component; 5. Leveling component; 6. Connecting rope; 7. Detection column; 8. Photoelectric sensor; 9. Protection component; 11. Support seat; 12. Connecting frame; 13. Guide frame; 14. Electric push rod; 15. Adjustment rod; 16. Ground anchor; 21. Probe; 22. Through hole; 23. Positioning sleeve; 24. Sink hole; 31. Fixing box; 32. Telescopic plate; 33. Calibration plate; 34. Baffle; 35. Limit rod; 36. Control panel; 41. Motor; 42. Turntable; 43. Support shaft; 44. First gear; 45. Second gear; 46. Positioning column; 51. Fixing tube; 52. Threaded tube; 53. Connecting tube; 54. Guide rod; 55. Guide tube; 56. Detection hole; 91. Protective tube; 92. Fixing frame. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] Reference Figure 1 and Figure 2The present embodiment discloses an ultrasonic distance measuring device, comprising a tripod 1 and an ultrasonic distance meter 2. The tripod 1 comprises a support seat 11 and a plurality of connecting frames 12. The support seat 11 is rotatably connected with a plurality of guide frames 13. The connecting frame 12 is slidably connected with the guide frame 13. An electric push rod 14 is fixedly installed on the guide frame 13. The output shaft of the electric push rod 14 is fixedly connected with the connecting frame 12. The electric push rod 14 is used to push the connecting frame 12 to slide on the guide frame 13. An adjusting rod 15 is slidably connected to the connecting frame 12. The adjusting rod 15 is fixedly connected to the connecting frame 12 by fastening bolts. A foot 16 is fixedly installed on one end of the adjusting rod 15 away from the guide frame 13 for support. The connecting frame 12 is located below the guide frame 13, and the connecting frame 12 has a set rotation range, so that the plurality of foots 16 are unfolded to form a certain angle, thereby improving the stability of the support. When the plurality of connecting frames 12 are closed, the overall space occupied by the tripod 1 can be reduced, thereby reducing the carrying difficulty of the tripod 1.

[0050] The arrangement of the adjusting rod 15 and the electric push rod 14, when it is necessary to adjust the height of the support seat 11 over a large range or adjust the support length of one side, the relative position of the adjusting rod 15 and the connecting frame 12 is controlled to increase the adjustable range and fixed by tightening bolts to ensure the stability of the adjusting rod 15 and the connecting frame 12. When performing precise adjustment in a small range, the output shaft of the electric push rod 14 pushes the connecting frame 12 to move, thereby adjusting the relative position of the connecting frame 12 and the guide frame 13, achieving precise fine-tuning of the telescopic length, and reducing the difficulty of leveling the support seat 11 and the ultrasonic rangefinder 2 after installation.

[0051] Reference Figures 1 to 7A calibration assembly 3 for calibrating the ultrasonic rangefinder 2 is installed on the support seat 11. The calibration assembly 3 includes a fixed box 31 and a plurality of telescopic plates 32. The fixed box 31 is fixedly installed on the support seat 11. One end of the fixed box 31 is open. The plurality of telescopic plates 32 are slidably connected to each other. A calibration plate 33 is rotatably connected to the uppermost telescopic plate 32. The lowermost telescopic plate 32 is slidably connected to the fixed box 31. The total height of the plurality of telescopic plates 32 after contraction is equal to the inner cavity height of the fixed box 31. The plurality of telescopic plates 32 can be retracted into the fixed box 31 after contraction. The height of the calibration plate 33 folded (parallel to the telescopic plate 32) on the telescopic plate 32 is equal to the corresponding The height of the upper surface of the telescopic plate 32 is equal, and the open end of the fixed box 31 is slidably connected with a baffle 34, which is used to limit the telescopic plate 32 stored in the fixed box 31 to prevent the telescopic plate 32 from sliding out freely. The baffle 34 is threaded with a limit rod 35, and the open end of the fixed box 31 is provided with a limit groove. After the baffle 34 blocks the open end of the fixed box 31, the limit rod 35 is screwed and inserted into the limit groove to fix the baffle 34. A scale line (not shown in the figure) is set on one side of the telescopic plate 32, and the scale line is on the same side of several telescopic plates 32. From the uppermost telescopic plate 32 to the lowermost telescopic plate 32, the scale value increases in sequence. For example, the scale value of the uppermost side is 0-200mm, the scale value of the next telescopic plate 32 is 201-400mm, and so on, so as to achieve continuous scale values, and the 0 scale value corresponds to the expanded position of the calibration plate 33. By setting the scale value, the position of the calibration plate 33 can be effectively determined, thereby ensuring the subsequent calibration accuracy of the ultrasonic rangefinder 2.

[0052] The end of the probe 21 of the ultrasonic rangefinder 2 is flush with the end surface of the baffle 34. When the telescopic plate 32 and the calibration plate 33 are unfolded, the distance between the probe 21 and the calibration plate 33 can be quickly measured through the scale value, thereby achieving flexible distance measurement.

[0053] An adjusting component 4 is installed on the fixed box 31, and the adjusting component 4 includes a motor 41 and a rotating table 42. The motor 41 is fixedly installed on the fixed box 31, and a supporting shaft 43 is fixedly installed on the rotating table 42. The rotating table 42 is rotatably connected to the fixed box 31 through the supporting shaft 43. The output shaft of the motor 41 is fixedly connected to a first gear 44, and a second gear 45 is fixedly installed on the supporting shaft 43. The first gear 44 and the second gear 45 are meshed for transmission.

[0054] At least three positioning posts 46 are fixedly mounted on the rotating table 42, and four are arranged in this embodiment. A plurality of through holes 22 are opened on the shell of the ultrasonic rangefinder 2, and positioning sleeves 23 are embedded in the inner walls of the through holes 22. The positioning posts 46 are plugged into and matched with the corresponding positioning sleeves 23 (at this time, the bottom surface of the ultrasonic rangefinder 2 is in contact with the surface of the rotating table 42), so as to realize the accurate positioning of the ultrasonic rangefinder 2 on the rotating table 42, and the axis of the support shaft 43 is collinear with the center line of the tripod 1, and the distance between the probe 21 of the installed ultrasonic rangefinder 2 and the axis of the support shaft 43 is fixed. Therefore, when measuring, the difficulty of measuring the distance between the object to be measured and the center line of the tripod 1 can be effectively reduced, and the accuracy of measurement and calibration can be improved.

[0055] A plurality of countersunk holes 24 are provided on the ultrasonic rangefinder 2, and the axes of the countersunk holes 24 are colinear with the axis of the positioning sleeve 23. When the positioning post 46 is inserted into the positioning sleeve 23, the fastening bolt passes through the countersunk holes 24 and is threadedly engaged with the positioning post 46, thereby fixing the ultrasonic rangefinder 2 on the positioning post 46, improving the stability of the ultrasonic rangefinder 2 during distance measurement. At the same time, the ultrasonic rangefinder 2 on the adjustment component 4 can be adjusted for initial measurement accuracy through the calibration plate 33, thereby adapting to the measurement requirements of different environments and improving the measurement accuracy.

[0056] The output shaft of the motor 41 drives the first gear 44 to rotate, and drives the second gear 45, the support shaft 43 and the rotating platform 42 to rotate through meshing transmission, thereby changing the measuring direction of the ultrasonic rangefinder 2 and improving the flexibility of measurement.

[0057] A control screen 36 is fixedly mounted on the fixed box 31. The adjustment component 4 also includes an angle sensor for controlling the rotation angle of the rotating table 42. The electric push rod 14, the motor 41, the angle sensor and the ultrasonic rangefinder 2 are all electrically connected to the control screen 36. Therefore, when the distance between objects at multiple angles needs to be measured at the same position point, by inputting the angle value of the direction to be measured on the control screen 36, the motor 41 automatically controls the ultrasonic rangefinder 2 to rotate to the set angle for distance measurement, thereby effectively reducing the difficulty of distance measurement.

[0058] It should be noted that the ultrasonic rangefinder 2 and the control screen 36 can be connected in a wired or wireless manner to achieve data transmission.

[0059] Reference Figure 2 , Figures 8 to 10A leveling assembly 5 is installed below the support seat 11. The leveling assembly 5 includes a fixed cylinder 51 and a threaded tube 52. The fixed cylinder 51 is fixedly installed on the support seat 11. The threaded tube 52 is threadedly matched with the fixed cylinder 51. The inner side of the threaded tube 52 is rotatably connected with a connecting cylinder 53. The axis of the fixed cylinder 51 is colinear with the axis of the connecting cylinder 53. A plurality of guide rods 54 are fixedly installed on the fixed cylinder 51. A plurality of guide tubes 55 corresponding to the guide rods 54 are fixedly installed on the connecting cylinder 53. The guide rods 54 are slidably matched with the corresponding guide tubes 55, thereby realizing the sliding connection between the connecting cylinder 53 and the fixed cylinder 51. A detection device is provided on the connecting cylinder 53. Hole 56, the detection hole 56 is coaxial with the connecting tube 53, a connecting rope 6 is fixedly installed on the fixed tube 51, and the end of the connecting rope 6 away from the fixed tube 51 is fixedly connected to the detection column 7, and the end of the detection column 7 passes through the detection hole 56, and the fixing points of the two ends of the connecting rope 6 are respectively located on the axis of the fixed tube 51 and the detection column 7, and a plurality of photoelectric sensors 8 are fixedly installed on the connecting tube 53, and the photoelectric sensor 8 array is distributed around the detection hole 56, and the transmitter and receiver of the photoelectric sensor 8 are respectively located on the opposite sides of the detection hole 56 (at both ends of the diameter line), and the detection light of the plurality of photoelectric sensors 8 intersects on the extension line of the axis of the detection hole 56.

[0060] The present embodiment can realize manual or automatic leveling of the ultrasonic rangefinder 2 after installation. During leveling, the threaded tube 52 is screwed out of the fixing tube 51, and the detection column 7 naturally hangs down. During manual adjustment, the relative positions of the connecting frame 12 and the adjusting rod 15 are adjusted and fixed, so that the sensing of the plurality of photoelectric sensors 8 is interrupted. At this time, the detection column 7 is at the center of the detection hole 56, and the manual leveling is completed. During automatic leveling, the relative positions of the connecting frame 12 and the adjusting rod 15 are preliminarily adjusted and fixed, so that the ultrasonic rangefinder 2 is at a suitable measuring height. The plurality of electric push rods 14 work together to move the ultrasonic rangefinder 2 in any direction. When the photoelectric sensor 8 does not detect the detection column 7 within the set adjustment range, the plurality of electric push rods 14 work together to control the detection column 7. The column 7 moves in the opposite direction until a group of photoelectric sensors 8 sense the detection column 7 and stops. According to the installation position of the sensed photoelectric sensors 8, a plurality of electric push rods 14 control the switching adjustment direction to be along the detection direction of the photoelectric sensors 8, and adjust again. If the other photoelectric sensors 8 do not detect the detection column 7 within the set adjustment range, the plurality of electric push rods 14 work together to control the detection column 7 to move in the opposite direction until another group of photoelectric sensors 8 sense the detection column 7 and stop, thereby completing the leveling. By adjusting the level of the ultrasonic rangefinder 2, it can be ensured that the distance of the measured object can be accurately reflected during the measurement process, effectively reducing the measurement error caused by the tilt angle between the ultrasonic rangefinder 2 and the measured object, and improving the measurement accuracy and reliability.

[0061] The connecting tube 53 is provided with a protection assembly 9, which includes a protection tube 91. The inner diameter of the protection tube 91 is larger than the outer diameter of the detection column 7. The axis of the protection tube 91 is colinear with the axis of the detection hole 56. The protection tube 91 is fixedly mounted on the connecting tube 53 through a fixing frame 92. The mouth of the protection tube 91 is trumpet-shaped. From top to bottom, the inner diameter of the mouth cross section of the protection tube 91 gradually decreases, thereby reducing the difficulty of inserting the detection column 7. After the measurement is completed, the threaded tube 52 moves up and is threadedly locked with the fixing tube 51. The detection column 7 is inserted into the protection tube 91 and moves up, thereby effectively protecting the detection column 7 and reducing the risk of damage to the detection column 7. During the detection, the protection tube 91 moves down synchronously with the threaded tube 52. When it falls to the bottom, the end of the detection column 7 is separated from the protection tube 91 to avoid affecting the measurement. By lowering the detection column 7 to a certain height during the measurement, when there is a small inclination, the swing range of the detection column 7 can be effectively increased, thereby improving the accuracy of leveling.

[0062] When using an ultrasonic distance measuring device disclosed in an embodiment of the present invention, the ultrasonic distance measuring device 2 is mounted on and fixed to the rotating platform 42 by plugging and matching the positioning column 46 with the corresponding positioning sleeve 23, and the height of the ultrasonic distance measuring device 2 is preliminarily adjusted by the adjusting rod 15, and the threaded tube 52 is screwed off the fixing tube 51, and the detection column 7 falls naturally;

[0063] A plurality of electric push rods 14 work together to move the ultrasonic rangefinder 2 in any direction. When the photoelectric sensor 8 does not detect the detection column 7 within the set adjustment range, the plurality of electric push rods 14 work together to control the detection column 7 to move in the opposite direction until a group of photoelectric sensors 8 sense the detection column 7 and stop. According to the installation position of the sensed photoelectric sensor 8, the plurality of electric push rods 14 control the switching adjustment direction to be along the detection direction of the photoelectric sensor 8 and adjust again. If the other photoelectric sensors 8 do not detect the detection column 7 within the set adjustment range, the plurality of electric push rods 14 work together to control the detection column 7 to move in the opposite direction until another group of photoelectric sensors 8 sense the detection column 7 and stop, thereby completing the leveling.

[0064] The baffle 34 is opened, the telescopic plate 32 and the calibration plate 33 are unfolded, and the ultrasonic rangefinder 2 is measured and calibrated through the probe 21, and the error between the measured distance and the actual distance is compared, so as to perform an initial calibration on the ultrasonic rangefinder 2. After the calibration is completed, measurement can be performed.

[0065] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An ultrasonic distance measuring device, characterized in that: It comprises a tripod (1), an ultrasonic rangefinder (2) and a connecting rope (6), wherein the ultrasonic rangefinder (2) is used for measuring distance; The tripod (1) is provided with a telescopic calibration component (3) for calibrating the ultrasonic rangefinder (2); An adjustment component (4) is installed on the calibration component (3), the ultrasonic distance meter (2) is plugged and positioned on the adjustment component (4), and the adjustment component (4) is used to adjust the distance measurement direction of the ultrasonic distance meter (2); The tripod (1) is provided with a leveling assembly (5), one end of the connecting rope (6) is fixedly connected to the leveling assembly (5), and the other end is fixedly connected to a detection column (7), and the detection column (7) is freely hanging and is used to determine the horizontal plane; A plurality of photoelectric sensors (8) are fixedly mounted on the leveling component (5) and are used to sense the position of the detection column (7); The fixing point of the connecting rope (6) and the leveling component (5) is located on the axis of the leveling component (5), and the sensing light beams of the plurality of photoelectric sensors (8) intersect on the axis of the leveling component (5); The tripod (1) comprises a support base (11) and a plurality of connecting frames (12). The leveling assembly (5) comprises a fixed cylinder (51) and a threaded tube (52), the fixed cylinder (51) being fixedly mounted on the support seat (11), the threaded tube (52) being threadably matched with the fixed cylinder (51), the inner side of the threaded tube (52) being rotatably connected to a connecting cylinder (53), the connecting cylinder (53) being slidably connected to the fixed cylinder (51), and the axis of the fixed cylinder (51) and the axis of the connecting cylinder (53) being collinear; The connecting rope (6) is fixedly mounted on the fixing cylinder (51), and the fixing points at both ends of the connecting rope (6) are respectively located on the axes of the fixing cylinder (51) and the detection column (7); The connecting tube (53) is provided with a detection hole (56), the detection hole (56) and the connecting tube (53) being coaxial, a plurality of photoelectric sensors (8) being fixedly mounted on the connecting tube (53), and an array being distributed around the detection hole (56), and detection light rays of the plurality of photoelectric sensors (8) intersecting on an extension line of the axis of the detection hole (56).

2. An ultrasonic distance measuring device according to claim 1, characterized in that: A plurality of guide frames (13) are rotatably connected to the support seat (11), the connecting frame (12) is slidably connected to the guide frame (13), an electric push rod (14) is fixedly installed on the guide frame (13), the output shaft of the electric push rod (14) is fixedly connected to the connecting frame (12), the electric push rod (14) is used to push the connecting frame (12) to slide on the guide frame (13), an adjusting rod (15) is slidably connected to the connecting frame (12), the adjusting rod (15) is fixed to the connecting frame (12) by a fastening bolt, and a foot (16) is fixedly installed on one end of the adjusting rod (15) away from the guide frame (13) for support.

3. An ultrasonic distance measuring device according to claim 2, characterized in that: The calibration assembly (3) comprises a fixed box (31) and a plurality of telescopic plates (32), wherein the fixed box (31) is fixedly mounted on the support seat (11) and one end of the fixed box (31) is open, and the plurality of telescopic plates (32) are slidably connected to each other, the calibration plate (33) is rotatably connected to the uppermost telescopic plate (32), and the lowermost telescopic plate (32) is slidably connected to the fixed box (31); The open end of the fixed box (31) is slidably connected to a baffle (34) and fixed by a limiting rod (35), and the baffle (34) is used to limit the telescopic plate (32).

4. An ultrasonic distance measuring device according to claim 3, characterized in that: The total height of the plurality of telescopic plates (32) after contraction is equal to the inner cavity height of the fixed box (31), and the height of the calibration plate (33) folded on the telescopic plate (32) is equal to the height of the upper surface of the corresponding telescopic plate (32).

5. The ultrasonic distance measuring device according to claim 3, characterized in that: A scale line is provided on one side of the telescopic plate (32), and the scale line is located on the same side of the plurality of telescopic plates (32); The scale values ​​increase sequentially from the uppermost telescopic plate (32) to the lowermost telescopic plate (32).

6. The ultrasonic distance measuring device according to claim 3, characterized in that: The adjustment assembly (4) comprises a motor (41) and a rotating table (42); the motor (41) is fixedly mounted on the fixed box (31); a support shaft (43) is fixedly mounted on the rotating table (42); the rotating table (42) is rotatably connected to the fixed box (31) via the support shaft (43); an output shaft of the motor (41) is fixedly connected to a first gear (44); a second gear (45) is fixedly mounted on the support shaft (43); and the first gear (44) and the second gear (45) are meshed for transmission; A plurality of positioning columns (46) are fixedly mounted on the rotating platform (42), a plurality of positioning sleeves (23) are embedded in the ultrasonic rangefinder (2), and the positioning columns (46) are plug-fitted with corresponding positioning sleeves (23) and fixed by fasteners.

7. An ultrasonic distance measuring device according to claim 6, characterized in that: The adjustment assembly (4) further comprises an angle sensor for detecting the rotation angle of the rotating table (42); a control screen (36) is fixedly mounted on the fixed box (31); and the electric push rod (14), the motor (41), the angle sensor and the ultrasonic rangefinder (2) are all electrically connected to the control screen (36).

8. The ultrasonic distance measuring device according to claim 1, characterized in that: A protective tube (91) is fixedly mounted on the connecting tube (53); the inner diameter of the protective tube (91) is greater than the outer diameter of the detection column (7); and the axis of the protective tube (91) is colinear with the axis of the detection hole (56).

9. An ultrasonic distance measuring device according to claim 8, characterized in that: The mouth of the protective tube (91) is trumpet-shaped, and the inner diameter of the cross section of the mouth of the protective tube (91) gradually decreases from top to bottom.

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