A computer vision based distance measuring device

Abstract

This application relates to a distance measurement device based on computer vision, comprising: a base; a support plate fixed above the base; a mounting plate fixed above the support plate; a measuring head mounted on the mounting plate; several movable claws divided into two groups and symmetrically distributed on the base, each movable claw including a first adjusting arm and a second adjusting arm, the first adjusting arm being hinged to the base and the second adjusting arm being hinged to one end of the first adjusting arm on the base; and a displacement assembly for driving the movable claws to fold or unfold; having the function of displacement and comprehensive measurement of multiple areas.

Description

Technical Field

[0001] This invention relates to the field of distance measurement technology, and more specifically to a distance measurement device based on computer vision. Background Technology

[0002] Distance measurement refers to the work of measuring the length of the line connecting two points on the ground. Usually, it is necessary to measure the horizontal distance, that is, the length of the projection of the line connecting the two points onto a certain level surface. It is one of the elements for determining the planar position of the ground point and one of the most basic tasks in surveying work. In construction sites of engineering machinery, it is necessary to measure the displacement of some components for testing, measurement or troubleshooting.

[0003] Patent application number CN202122661937.1 discloses a distance measurement device based on computer vision, including a support base, a support shaft fixedly connected to the top of the support base, an adjustment block fixedly connected to the top of the support shaft, a first servo motor provided on the inner wall of the adjustment block, an adjustment mechanism provided on the first servo motor, a cavity provided inside the adjustment block, a sensing mechanism provided inside the cavity, and two opposing second servo motors provided on the inner wall of the support base, with a limit shaft fixedly connected to the output end of each second servo motor.

[0004] The distance measurement device based on computer vision disclosed in the aforementioned patent cannot perform displacement function during use; it is limited to measuring distance at a specific point. Summary of the Invention

[0005] This invention provides a distance measurement device based on computer vision.

[0006] The technical solution adopted by the present invention to solve its technical problem is: a distance measurement device based on computer vision, including a base;

[0007] A tray, which is fixed above the base;

[0008] Mounting plate, which is fixed above the support plate;

[0009] The measuring head is mounted on the mounting plate;

[0010] Several movable claws are divided into two groups and symmetrically distributed on the base. Each movable claw includes a first adjusting arm and a second adjusting arm. The first adjusting arm is hinged to the base, and the second adjusting arm is hinged to one end of the first adjusting arm that is connected to the base.

[0011] A displacement component for driving the movable claw to fold or unfold.

[0012] The displacement assembly includes a positioning cylinder, a positioning shaft, a first shaft pin seat, a first electric push rod, a second shaft pin seat, and a second electric push rod. The number of positioning cylinders is the same as the number of first adjusting arms. The positioning cylinder is vertically fixed on the support plate. The positioning shaft is inserted into the positioning cylinder and rotatably connected to the positioning cylinder. The top end of the positioning shaft is fixed to the first shaft pin seat. A support rod is hinged to the first shaft pin seat. The mounting end of the first electric push rod is hinged to the support rod, and the output end is hinged to the first adjusting arm. The axis of the hinge point between the support rod and the first shaft pin seat, as well as the axis of the hinge point between the support rod and the first electric push rod, are perpendicular.

[0013] The second shaft pin seat is vertically fixed on the base and corresponds one-to-one with the first shaft pin seat. The first adjusting arm is hinged to the second shaft pin seat. The mounting end of the second electric push rod is hinged to the second shaft pin seat, and the output end is hinged to the second adjusting arm.

[0014] The pallet is provided with a limiting frame, and the limiting frame contains a main unit for controlling the first electric push rod and the second electric push rod.

[0015] The bottom of the tray is provided with several support rods that extend to the base.

[0016] The measuring head is provided in several parts and arranged in a circumferential direction, with each measuring head facing outward.

[0017] The mounting plate is provided with a protective cover corresponding to each measuring head. The measuring head is located inside the protective cover, and a focusing head is provided at the end of the protective cover opposite to the head of the measuring head. The protective cover is provided with a measuring component for driving the measuring head to move closer to or away from the focusing head.

[0018] The measuring component includes an adjusting rod and a wire hole block. The adjusting rod is rotatably connected inside the protective cover, and the wire hole block passes through the adjusting rod and is threadedly connected to the adjusting rod. The wire hole block is slidably connected to the inner wall of the protective cover.

[0019] The mounting plate is provided with a hollow column, and a pull plate that moves along the height direction of the hollow column is slidably connected inside the hollow column. The pull plate is hinged with the same number of support diagonal rods as the protective cover and arranged in a circumferential direction. The hollow column has a frame opening for each support diagonal rod to pass through. One end of the support rod passing through the frame opening is connected to the protective cover. The hollow column is provided with a drive assembly for driving the pull plate to move up and down and causing the support diagonal rods to move closer or further apart.

[0020] The drive assembly includes a hydraulic rod and a positioning shaft. The hydraulic rod is installed inside the hollow cylindrical tube and located below the tension plate. The output end of the hydraulic rod is connected to the tension plate.

[0021] Each of the frame openings has a sliding groove extending along its height on its two inner walls. Each of the supporting diagonal rods has an elongated hole on its side wall. Several positioning shafts are provided and are slidably connected in each elongated hole. The two ends of the positioning horizontal shaft extend into the corresponding sliding grooves and are slidably connected to the sliding grooves.

[0022] By employing the above technical solutions, the present invention has the following beneficial effects compared to the prior art:

[0023] 1. The first and second electric push rods control the folding and unfolding of the second and first adjusting arms to move the device, so that the device can measure distances in different areas;

[0024] 2. During the measurement process, the first and second electric push rods can control the folding and unfolding angles of the second and first adjusting arms according to the needs of the scene, so as to make the level of the base appropriate to adapt to uneven ground.

[0025] 3. During measurement, the support diagonal rod rotates along the axis of the positioning horizontal rod due to the traction force when the pulling plate is displaced, so that the measuring components can simultaneously converge or spread towards the axis of the hollow cylinder, realizing the function of measuring the distance to the outside of the device with the device as the center point.

[0026] 4. When the adjusting rod rotates, it causes the wire hole block and the measuring head to converge toward the focusing head, so as to adjust the measuring head to focus during measurement and avoid measurement deviation due to the distance being measured being too far. Attached Figure Description

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0028] Figure 1 This is an overall schematic diagram of the present invention;

[0029] Figure 2 This is a schematic diagram illustrating the structure of the driving component in this invention;

[0030] Figure 3 This is a schematic diagram illustrating the structure of the measuring head and focusing head of the present invention;

[0031] Figure 4 This is a structural schematic diagram illustrating the displacement component of the present invention;

[0032] Figure 5 This is a schematic diagram illustrating the structural features of the positioning shaft and positioning cylinder of the present invention;

[0033] Figure 6 This is a side view of the present invention.

[0034] In the diagram: 1. Base; 2. Support plate; 21. Limiting frame; 22. Main unit; 23. Support rod; 3. Mounting plate; 4. Measuring head; 41. Protective cover; 42. Focusing head; 43. Measuring assembly; 431. Adjusting rod; 432. Threaded block; 5. Movable claw; 51. First adjusting arm; 52. Second adjusting arm; 6. Displacement assembly; 61. Positioning cylinder; 62. Positioning shaft; 63. First shaft pin seat; 631. Support rod; 64. First electric push rod; 65. Second shaft pin seat; 66. Second electric push rod; 7. Hollow column; 71. Pull plate; 72. Supporting diagonal rod; 721. Long slot; 73. Frame opening; 731. Slide groove; 8. Drive assembly; 81. Hydraulic rod; 82. Positioning shaft rod. Detailed Implementation

[0035] The present invention will now be described in further detail with reference to the accompanying drawings. In the description of this application, it should be understood that the terms "left side," "right side," "upper part," "lower part," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. "First," "second," etc., do not indicate the importance of the components, and therefore should not be construed as a limitation of the present invention. The specific dimensions used in this embodiment are only for illustrating the technical solution and do not limit the scope of protection of the present invention.

[0036] like Figure 1 As shown, a distance measurement device based on computer vision according to the present invention includes a base 1, a support plate 2 and a mounting plate 3 arranged in parallel from bottom to top.

[0037] The support plate 2 is fixed to the base 1, and the bottom of the support plate 2 is provided with several support rods 23 that extend to the base 1. Several movable claws 5 are symmetrically distributed on both sides of the base 1 along the length direction, and there are three movable claws 5 on each side of the base 1. The movable claw 5 includes a first adjusting arm 51 and a second adjusting arm 52. The first adjusting arm 51 is hinged to the base 1, and the second adjusting arm 52 is hinged to one end of the first adjusting arm 51 on the base 1. The base 1 is provided with a displacement component 6 for driving the movable claws 5 to fold or unfold.

[0038] like Figure 2 As shown, the mounting plate 3 is fixed to the support plate 2, and a hollow column 7 is vertically provided on the mounting plate 3. A tension plate 71 that moves along its height direction is slidably connected inside the hollow column 7. Four support diagonal rods 72 arranged in the circumferential direction are hinged on the tension plate 71. A frame opening 73 is provided on the hollow column 7 for each support diagonal rod 72 to pass through. One end of each support rod 23 that passes through the frame opening 73 is fixed with a protective cover 41 by bolts.

[0039] like Figure 3As shown, each protective cover 41 is equipped with a measuring head 4. Each protective cover 41 has a focusing head 42 opposite to the head of the measuring head 4 at one end away from its circumferential distribution axis. The protective cover 41 is equipped with a measuring component 43 for driving the measuring head 4 to move closer to or away from the focusing head 42. The distance between the measuring head 4 and the focusing head 42 is adjusted by the measuring component 43, and the solid line is focused.

[0040] like Figure 2 As shown, the hollow column 7 is provided with a drive assembly 8 for driving the pulling plate 71 to move up and down and causing the various supporting diagonal rods 72 to move closer or separate from each other. The drive assembly 8 causes the various supporting diagonal rods 72 to converge or spread towards the axis of the hollow column 7 at the same time, realizing the function of measuring the distance to the outside of the device with the device as the center point.

[0041] like Figure 4 and Figure 5 As shown, the displacement assembly 6 includes a first electric push rod 64, a second electric push rod 66, a positioning cylinder 61 vertically fixed on the support plate 2, a positioning shaft 62 inserted into the positioning cylinder 61 and rotatably connected to the positioning cylinder 61, a first shaft pin seat 63 fixed on the positioning shaft 62, a support rod 631 hinged to the first shaft pin seat 63, and a second shaft pin seat 65 vertically fixed on the base 1. The number of positioning cylinders 61 and the first adjusting arms 51 are the same and their positions correspond one-to-one. The mounting end of the first electric push rod 64 is hinged to the support rod 631, and the output end is hinged to the first adjusting arm 51. The axis of the hinge point between the support rod 631 and the first shaft pin seat 63, as well as the axis of the hinge point between the support rod 631 and the first electric push rod 64, are perpendicular.

[0042] The first adjusting arm 51 is hinged to the second shaft pin seat 65, the mounting end of the second electric push rod 66 is hinged to the second shaft pin seat 65, and the output end is hinged to the second adjusting arm 52.

[0043] The pallet 2 is provided with a limiting frame 21 distributed along its length direction. The limiting frame 21 is located between the two movable claws 5 on both sides. The main unit 22 for controlling the first electric push rod 64 and the second electric push rod 66 is provided inside the limiting frame 21.

[0044] The program originally written in the host 22 controls the activation of the first electric push rod 64. The output end of the first electric push rod 64 retracts, driving the first adjusting arm 51 to rotate along the axis at the connection between the first adjusting arm 51 and the second shaft pin seat 65. The second adjusting arm 52 is angled by the traction force when the output end of the first adjusting arm 51 retracts. Then, the second electric push rod 66 is activated, driving the second adjusting arm 52 to rotate along the axis at the connection between the second adjusting arm 52 and the first adjusting arm 51. The first electric push rod 64 and the second electric push rod 66 control the folding and unfolding of the second adjusting arm 52 and the first adjusting arm 51 to move the device, so that the device can measure distances in different areas.

[0045] In addition, when the device is performing measurements, it can control the folding and unfolding angles of the second adjusting arm 52 and the first adjusting arm 51 by the first electric push rod 64 and the second electric push rod 66 according to the needs of the scene, so as to make the level of the base 1 appropriate to adapt to the uneven ground.

[0046] like Figure 3 As shown, the measuring assembly 43 includes an adjusting rod 431 and a threaded block 432. The adjusting rod 431 is rotatably connected inside the protective cover 41, and the threaded block 432 passes through the adjusting rod 431 and is threadedly connected to it. The threaded block 432 is slidably connected to the inner wall of the protective cover 41. When the operator rotates the adjusting rod 431, the threaded engagement between the adjusting rod 431 and the threaded block 432 drives the threaded block 432 to move the measuring head 4.

[0047] like Figure 2 and Figure 6 As shown, the drive assembly 8 includes a hydraulic rod 81 and a positioning shaft 82. The hydraulic rod 81 is installed inside the hollow cylindrical tube 7 and located below the tension plate 71. The output end of the hydraulic rod 81 is connected to the tension plate 71.

[0048] Each frame opening 73 has a sliding groove 731 extending along its height direction on its two inner walls. Each support diagonal rod 72 has an elongated hole 721 on its side wall. Several positioning shaft rods 82 are provided and are slidably connected in each elongated hole 721. The two ends of the positioning horizontal shaft rod extend into the corresponding sliding groove 731 and are slidably connected to the sliding groove 731.

[0049] When the device is measuring distance, it can activate the hydraulic rod 81 to drive the pulling plate 71 to move as needed. The support rod 72 moves due to the traction force when the pulling plate 71 moves. When the support rod 72 moves, the positioning shaft 82 is set in the long waist hole 721. At the same time, both ends of the positioning shaft 82 extend into the slide groove 731. Due to the traction force when the pulling plate 71 moves, the support rod 72 rotates along the axis point at the connection between the support rod 72 and the pulling plate 71, so that the measuring head 4 at the end of the support rod 72 can simultaneously converge or diffuse towards the axis point of the hollow cylinder 7.

[0050] The principle of this embodiment is as follows: The host 22 drives the first adjusting arm 51 and the second adjusting arm 52 to move in coordination by controlling the first electric push rod 64 and the second electric push rod 66, thereby realizing the movement of the base 1 and meeting the needs of multi-area measurement. At the same time, the hydraulic rod 81 drives the pulling plate 71 to move, adjusting the position between each measuring head 4 and expanding the measurement range outside the device.

[0051] Those skilled in the art will understand that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have the meaning consistent with their meaning in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless defined as herein.

[0052] The meaning of "and / or" as used in this application includes situations where each exists alone or both exist simultaneously.

[0053] The term "connection" as used in this application can mean a direct connection between components or an indirect connection between components through other components.

[0054] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A distance measurement device based on computer vision, characterized in that: Includes base (1); The tray (2) is fixed above the base (1); Mounting plate (3), which is fixed above the support plate (2); measuring head (4), which is mounted on the mounting plate (3); The measuring head (4) is provided in a plurality of units and arranged in a circumferential direction, with each measuring head (4) facing outward; The mounting plate (3) is provided with a protective cover (41) corresponding to the measuring head (4) one by one. The measuring head (4) is located inside the protective cover (41), and a focusing head (42) is provided at one end of the protective cover (41) opposite to the head of the measuring head (4). The protective cover (41) is provided with a measuring component (43) for driving the measuring head (4) to move closer to or away from the focusing head (42). A plurality of movable claws (5) are divided into two groups and symmetrically distributed on the base (1). The movable claws (5) include a first adjusting arm (51) and a second adjusting arm (52). The first adjusting arm (51) is hinged to the base (1), and the second adjusting arm (52) is hinged to the end of the first adjusting arm (51) away from the base (1). The displacement assembly (6), used to drive the movable claw (5) to fold or unfold, includes a positioning cylinder (61), a positioning shaft (62), a first shaft pin seat (63), a first electric push rod (64), a second shaft pin seat (65), and a second electric push rod (66). The number of positioning cylinders (61) is the same as the number of first adjusting arms (51). The positioning cylinders (61) are vertically fixed on the support plate (2). The positioning shaft (62) is inserted into the positioning cylinders (61) and... Rotary connection with positioning cylinder (61), the top end of positioning shaft (62) is fixed to first shaft pin seat (63), support rod (631) is hinged on first shaft pin seat (63), mounting end of first electric push rod (64) is hinged to support rod (631), output end is hinged to first adjusting arm (51), the axis of hinge point between support rod (631) and first shaft pin seat (63) and the axis of hinge point between support rod (631) and first electric push rod (64) are perpendicular; The second shaft pin seat (65) is vertically fixed on the base (1) and corresponds one-to-one with the first shaft pin seat (63). The first adjusting arm (51) is hinged to the second shaft pin seat (65). The mounting end of the second electric push rod (66) is hinged to the second shaft pin seat (65), and the output end is hinged to the second adjusting arm (52).

2. The distance measurement device based on computer vision according to claim 1, characterized in that: The pallet (2) is provided with a limiting frame (21), and the limiting frame (21) is provided with a host (22) for controlling the first electric push rod (64) and the second electric push rod (66).

3. The distance measurement device based on computer vision according to claim 1, characterized in that: The bottom of the tray (2) is provided with several support rods (23) that extend to the base (1).

4. The distance measurement device based on computer vision according to claim 1, characterized in that: The measuring component (43) includes an adjusting rod (431) and a wire hole block (432). The adjusting rod (431) is rotatably connected inside the protective cover (41). The wire hole block (432) passes through the adjusting rod (431) and is threadedly connected to the adjusting rod (431). The wire hole block (432) is slidably connected to the inner wall of the protective cover (41).

5. A distance measurement device based on computer vision according to claim 1 or 4, characterized in that: The mounting plate (3) is provided with a hollow column (7). A pull plate (71) that moves along the height direction of the hollow column (7) is slidably connected inside the hollow column (7). Supporting diagonal rods (72) of the same number as the protective cover (41) and arranged in the circumferential direction are hinged on the pull plate (71). The hollow column (7) is provided with a frame opening (73) for each supporting diagonal rod (72) to pass through. One end of the supporting diagonal rod (72) that passes through the frame opening (73) is connected to the protective cover (41). The hollow column (7) is provided with a driving assembly (8) for driving the pull plate (71) to move up and down and causing each supporting diagonal rod (72) to move closer to or separate from each other.

6. The distance measurement device based on computer vision according to claim 5, characterized in that: The drive assembly (8) includes a hydraulic rod (81) and a positioning shaft (82). The hydraulic rod (81) is installed inside the hollow cylindrical tube (7) and located below the tension plate (71). The output end of the hydraulic rod (81) is connected to the tension plate (71). Each of the frame openings (73) has a sliding groove (731) extending along its height direction on its two inner walls. Each of the supporting diagonal rods (72) has an elongated hole (721) on its side wall. Several positioning shafts (82) are provided and are slidably connected in each elongated hole (721). The two ends of the positioning shafts extend into the corresponding sliding grooves (731) and are slidably connected to the sliding grooves (731).

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