Measuring device

Abstract

The measuring equipment comprises a sensing unit, the sensing unit comprises a bin body, a laser sensing module, an image sensing module, a connecting piece and a gasket, and the laser sensing module and the image sensing module are connected to a first surface and a second surface, opposite to each other up and down, of the connecting piece respectively. A part of the first surface is separated from the laser sensing module, so that an accommodating space is formed between the first surface and the laser sensing module; and / or part of the second surface is separated from the image sensing module, so that an accommodating space is formed between the second surface and the image sensing module. The containing space can be used for containing connecting lines of the laser sensing module and / or the image sensing module, and the connecting lines comprise wires and communication lines. The laser sensing module and the image sensing module are fixed together through the connecting piece, so that connection between the laser sensing module and the image sensing module is firmer, and movement is not prone to occurring. And the risk of measuring errors after the measuring equipment is used for a long time is reduced.

Description

Technical Field

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

[0002] Measuring equipment enables remote video surveillance and image displacement measurement. It can be used in locations such as subways, railways, bridges, and dams. The equipment consists of a laser sensor module and an image sensor module. During use, movement between the laser and image sensor modules can occur, leading to measurement errors. Summary of the Invention

[0003] In view of this, the present disclosure provides a measuring device that improves the structure of the connection between the laser sensing module and the image sensing module to solve the problem that the laser sensing module and the image sensing module are prone to movement, resulting in measurement errors in the measuring device.

[0004] The measuring device includes a sensing unit comprising a housing, a laser sensing module at least partially housed within the housing, an image sensing module, and a connector. The laser sensing module is configured to emit laser light toward a target along a predetermined emission direction, and the image sensing module is configured to acquire image measurement information along a predetermined measurement direction. A portion of the first surface is spaced apart from the laser sensing module to form a receiving space between the first surface and the laser sensing module.

[0005] In one embodiment, the measuring device includes a sensing unit comprising a housing, a laser sensing module at least partially housed within the housing, an image sensing module, and a connector. The laser sensing module is configured to emit laser light toward a target along a predetermined emission direction, and the image sensing module is configured to acquire image measurement information along a predetermined measurement direction. The laser sensing module and the image sensing module are respectively connected to first and second opposing surfaces of the connector. A portion of the second surface is spaced apart from the image sensing module to form a receiving space between the second surface and the image sensing module.

[0006] In one embodiment, the measuring device includes a sensing unit comprising a housing, a laser sensing module at least partially housed within the housing, an image sensing module, and a connector. The laser sensing module is configured to emit laser light toward a target along a predetermined emission direction, and the image sensing module is configured to acquire image measurement information along a predetermined measurement direction. The laser sensing module and the image sensing module are respectively connected to first and second surfaces of the connector, which are opposed to each other. A portion of the first surface is spaced apart from the laser sensing module to form a storage space between the first surface and the laser sensing module. A portion of the second surface is spaced apart from the image sensing module to form a storage space between the second surface and the image sensing module.

[0007] As an embodiment, a gasket is further included, which is arranged between the laser sensing module and the first surface and is used to adjust the relative angle between the set emission direction of the laser sensing module and the set measurement direction of the image sensing module, so that the irradiation point of the laser emitted by the laser sensing module on the target object is located at the center of the field of view of the image sensing module.

[0008] As an embodiment, a gasket is further included, which is arranged between the image sensing module and the second surface and is used to adjust the relative angle between the set emission direction of the laser sensing module and the set measurement direction of the image sensing module, so that the irradiation point of the laser emitted by the laser sensing module on the target object is located at the center of the field of view of the image sensing module.

[0009] As an embodiment, a gasket is further included, which is arranged between the laser sensing module and the first surface and between the image sensing module and the second surface, and is used to adjust the relative angle between the set emission direction of the laser sensing module and the set measurement direction of the image sensing module, so that the irradiation point of the laser emitted by the laser sensing module on the target object is located at the center of the field of view of the image sensing module.

[0010] As an embodiment, the image sensing module includes a lens arranged on the front side and an image sensor located behind the lens, and the set emission direction of the laser sensing module and the set measurement direction of the image sensing module intersect within a set distance range in front of the lens.

[0011] In one embodiment, the side of the first and second surfaces closer to the image sensor is the first side, and the side closer to the lens is the second side. The spacer is disposed on the first side of the first surface, and the laser sensing module and the image sensing module gradually approach each other from the first side to the second side.

[0012] In one embodiment, the side of the first and second surfaces closer to the image sensor is the first side, and the side closer to the lens is the second side. The spacer is disposed on the first side of the second surface, and the laser sensing module and the image sensing module gradually approach each other from the first side to the second side.

[0013] In one embodiment, the side of the first and second surfaces closer to the image sensor is the first side, and the side closer to the lens is the second side. A gasket is disposed on the first side of the first surface, and a gasket is disposed on the first side of the second surface; the laser sensing module and the image sensing module gradually approach each other from the first side to the second side.

[0014] As an embodiment, the connecting piece is made of titanium alloy material.

[0015] As an embodiment, there are multiple gaskets, each of which has a thickness of less than 5 mm, and the multiple gaskets are symmetrically arranged on opposite left and right sides of the first surface.

[0016] As an embodiment, there are multiple gaskets, each of which has a thickness of less than 5 mm, and the multiple gaskets are symmetrically arranged on opposite left and right sides of the second surface.

[0017] As an embodiment, there are multiple gaskets, each of which has a thickness of less than 5 mm, and multiple gaskets are symmetrically arranged on the left and right opposite sides of the first surface, and multiple gaskets are symmetrically arranged on the left and right opposite sides of the second surface.

[0018] As an embodiment, it also includes a base, a shaft and a drive assembly, the sensing unit is rotatably supported on the base by the shaft, the drive assembly is arranged in the base and drives the sensing unit to rotate relative to the base around the axis of the shaft by driving the shaft. The drive assembly includes a drive source, a worm and a worm wheel, the drive source is used to drive the worm; the worm is engaged with the worm wheel and is controlled by the drive source to drive the worm wheel, and the worm wheel is fixedly connected to the shaft. The worm wheel includes a first body, a second body and a biasing elastic member, the first body is coaxial with the shaft and fixedly connected, and the second body is coaxial with the shaft and rotatably connected relative to the first body. The biasing elastic member is constructed to apply an elastic force to the first body and the second body so that the first worm tooth on the first body and the second worm tooth on the second body are respectively engaged with the two side walls of the spiral teeth on the worm wheel in opposite rotation directions.

[0019] In one embodiment, the device further includes a base and a shaft, wherein the sensing unit is rotatably supported on the base via the shaft. The housing is provided with an axial hole, through which one end of the shaft extends partially into the housing and is fixedly connected to the laser sensing module or the image sensing module. The device further includes a seal, which is sleeved on the shaft and positioned between the inner periphery of the axial hole and the outer periphery of the shaft. The outer periphery of the seal is provided with a first groove, and the inner periphery of the housing defining the axial hole is positioned within the first groove. The inner surface of the first groove at least partially conforms to the surface of the inner periphery of the axial hole.

[0020] As an embodiment, a second groove is provided on the outer circumference of the shaft body, and the seal includes a base, which is at least partially located in the second groove, and the inner surface of the second groove is at least partially in contact with the outer surface of the base.

[0021] As an embodiment, it further includes a fill light and a dustproof plate, the image sensing module includes a lens, and the chamber body includes a front wall. A first hollow portion is provided on the front wall, and the orthographic projection of the first hollow portion on the front wall completely covers the orthographic projection of the lens on the front wall; a second hollow portion is provided on the circumferential outer side of the first hollow portion on the front wall, and the orthographic projection of the second hollow portion on the front wall completely covers the orthographic projection of the fill light on the front wall. The portion between the first hollow portion and the second hollow portion on the front wall is a light-shielding portion, and the light-shielding portion is configured so that the height of the outer end face in the axial direction of the lens is higher than or equal to the height of the fill light. The dustproof plate is sealed on the front wall and is in contact with at least the outer end face of the light-shielding portion.

[0022] As an embodiment, it also includes a base, a shaft and a support member, the sensing unit is rotatably supported on the base through the shaft body, the first end of the support member is fixedly connected to the shaft body, and the second end of the support member is fixedly connected to the warehouse body through a bolt, wherein a first alignment portion is provided at the second end, a second alignment portion corresponding to the first alignment portion is provided on the warehouse body, a first screw hole is provided on the first alignment portion, and a second screw hole is provided on the second alignment portion, and when the first alignment portion and the second alignment portion are aligned, the first screw hole and the second screw hole are aligned.

[0023] In the measuring device disclosed herein, the laser sensing module and image sensing module are secured together by a connector, making the connection more secure and less susceptible to movement. Furthermore, a portion of the first surface is spaced apart from the laser sensing module to create a storage space between the first surface and the laser sensing module; and / or a portion of the second surface is spaced apart from the image sensing module to create a storage space between the second surface and the image sensing module. This storage space can accommodate connecting wires, including conductors and communication cables, for the laser sensing module and / or the image sensing module. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] It should be understood that the following drawings only depict certain embodiments of the present disclosure and should not be considered limiting of the scope.

[0025] It should be understood that the same or similar reference numerals are used in the drawings to identify the same or similar elements.

[0026] It should be understood that the drawings are merely schematic and that the sizes and proportions of elements in the drawings are not necessarily accurate.

[0027] Figure 1 Schematic diagram of the structure of a measuring device according to an embodiment of the present disclosure.

[0028] Figure 2 for Figure 1 Schematic diagram of the exploded structure of the sensing unit of the measuring device.

[0029] Figure 3 for Figure 1Schematic diagram of the structure of the laser sensing module, image sensing module and connecting parts of the measuring device in FIG.

[0030] Figure 4 for Figure 1 Schematic diagram of the structure of the laser sensing module, image sensing module, gasket and connecting parts of the measuring device.

[0031] Figure 5 for Figure 1 Another structural schematic diagram of the laser sensing module, image sensing module, gasket and connecting parts of the measuring device in FIG.

[0032] Figure 6 for Figure 1 Schematic diagram of the set transmission direction and the set measurement direction of the measurement device in FIG.

[0033] Figure 7 Shown Figure 3 A partial enlarged schematic diagram of part A in FIG.

[0034] Figure 8 for Figure 1 Schematic diagram of the structure of multiple gaskets in the measuring device.

[0035] Figure 9 for Figure 1 Schematic diagram of the structure of the base, sensing unit and drive assembly of the measuring device in FIG.

[0036] Figure 10 for Figure 1 Schematic diagram of the structure of the sensing unit, shaft body and drive assembly of the measuring device in FIG.

[0037] Figure 11 for Figure 1 Schematic diagram of the exploded structure of the worm gear and shaft of the measuring device.

[0038] Figure 12 for Figure 1 Schematic diagram of the structure of the measuring device when the first worm gear and the second worm gear are engaged with the helical gear.

[0039] Figure 13 for Figure 1 Schematic diagram of the structure of the sensing unit, shaft body and seal of the measuring device in FIG.

[0040] Figure 14 for Figure 1 Schematic diagram of the structure of the sensing unit of the measuring device.

[0041] Figure 15 Along Figure 13 Schematic cross-sectional view taken along line AA.

[0042] Figure 16 Shown Figure 15 A partial enlarged schematic diagram of part B in FIG.

[0043] Figure 17 Shown Figure 15 Schematic diagram of the explosion structure of part B.

[0044] Figure 18 for Figure 1 Another exploded structural diagram of the sensing unit of the measuring device in FIG.

[0045] Figure 19 for Figure 1 Front view of the measuring device's front wall, lens, and fill light.

[0046] Figure 20 for Figure 1 Schematic diagram of the structure of the front wall, lens and fill light of the measuring device from another perspective.

[0047] Figure 21 To follow Figure 19 A schematic cross-sectional view of a conventional measuring device taken along line BB.

[0048] Figure 22 To follow Figure 19 Schematic cross-sectional view taken along line BB.

[0049] Figure 23 To follow Figure 19 Another schematic cross-sectional view of a conventional measurement group device, taken along line BB.

[0050] Figure 24 To follow Figure 19 Another schematic cross-sectional view taken along line BB.

[0051] Figure 25 for Figure 1 Schematic diagram of the structure of the support parts of the measuring device.

[0052] Figure 26 for Figure 1 Schematic diagram of the structure of the second alignment part of the chamber body of the measuring device.

[0053] Description of reference numerals: 10, base; 20, shaft; 21, second groove; 211, bottom wall of the second groove; 212, side wall of the second groove;

[0054] 30, sensing unit; 31, housing; 311, shaft hole; 3111, inner periphery of shaft hole; 3112, inner surface of shaft hole; 312, front wall; 3121, first hollow portion; 3122, second hollow portion; 32, laser sensing module; 33, image sensing module; 331, lens; 332, image sensor; 34, connector; 341, first surface; 342, second surface; 343, accommodation space; 35, gasket;

[0055] 40, driving assembly; 401, driving source; 41, worm; 412, helical gear; 42, worm wheel; 421, first body; 4211, first worm gear; 422, second body; 4221, second worm gear; 423, biasing elastic member;

[0056] 50, sealing member; 51, first groove; 511, bottom wall of the first groove; 512, side wall of the first groove; 52, base; 521, upper surface of the base; 522, bottom surface of the base; 523, side surface of the base;

[0057] 60, fill light; 61, light shielding portion; 611, outer end surface of the light shielding portion; 63, dustproof plate;

[0058] 70, support member; 71, first connecting portion; 72, second connecting portion; 73, first alignment portion; 731, first screw hole; 74, second alignment portion; 741, second screw hole. DETAILED DESCRIPTION

[0059] The following will illustrate the solution provided by the present disclosure with reference to specific embodiments and accompanying drawings.

[0060] Numerous specific details are set forth below to provide an understanding of the structure, function, and use of the embodiments described in the specification and illustrated in the accompanying drawings. It is understood that the embodiments described and illustrated herein are non-limiting examples, and thus it is recognized that the specific structural and functional details disclosed herein are representative and exemplary. Modifications and changes may be made to these embodiments without departing from the scope of the claims.

[0061] Previous measurement equipment can experience measurement errors after long-term use. The inventors discovered that the cause of this problem is that the laser sensing module and image sensing module in the measurement equipment move relative to each other after long-term use, causing the laser sensing module and image sensing module to lose their predetermined relative position, leading to measurement errors.

[0062] To address the above issues, the present disclosure provides a measuring device. The overall structure of the measuring device according to the present disclosure is first illustrated below. It should be understood that the structure of the measuring device is not limited to the following description. For example, one or more of the elements described below may be omitted or replaced, and the layout relationships between them may be altered.

[0063] For ease of understanding, the up and down directions of the measuring device are Figure 3-Figure 8 In the figure, the arrow z indicates the direction of the measurement device. Figure 3-Figure 8 They are also indicated by arrows x and y respectively.

[0064] refer to Figure 1 The measuring device may include a base 10, an axis 20 and a sensing unit 30. The base 10 is suitable for being fixed on a support. The measuring device can be installed at a predetermined position through the base 10 so that the measured object is within the measuring range of the measuring device. In some application scenarios, the measured object may be a subway, a railway, or a bridge, and the support may be a building around the measured object. One end of the base 10, such as the bottom end, may be fixed on the support. The other end of the base 10, such as the top end, may support the sensing unit 30. The sensing unit 30 may be rotatably supported on the base 10 through the axis 20.

[0065] refer to Figure 2 The sensing unit 30 includes a housing 31, a laser sensing module 32 at least partially housed within the housing 31, an image sensing module 33, and a connector 34. The laser sensing module 32 is configured to emit laser light toward a target along a predetermined emission direction, where the target may be a measurement object. The predetermined emission direction may coincide with the longitudinal axis of the laser sensing module 32. By way of example only, the laser sensing module 32 may be a laser rangefinder. The image sensing module 33 is configured to acquire image measurement information along a predetermined measurement direction, where the image measurement information may be an image of the measurement object. The predetermined measurement direction may coincide with the longitudinal axis of the image sensing module 33. By way of example only, the image sensing module 33 may be a device for capturing images or videos, such as a camera. The laser sensing module 32 and the image sensing module 33 may be housed within the housing 31. The housing 31 may isolate the laser sensing module 32 and the image sensing module 33 from the external environment to prevent contamination and damage by external contaminants.

[0066] refer to Figure 3The laser sensing module 32 and the image sensing module 33 can be connected to a first surface 341 and a second surface 342 of the connecting member 34, respectively, which are opposite to each other. The first surface 341 can be the entire or partial upper surface of the connecting member 34, or the entire or partial lower surface of the connecting member 34, and the same applies to the second surface 342. It should be understood that the terms "upper" and "lower" in this disclosure do not necessarily mean that the upper surface is higher than the lower surface in the direction of gravity in the usage scenario.

[0067] In some embodiments, the upper surface of the laser sensing module 32 is connected to the lower surface of the connector 34, and the lower surface of the image sensing module 33 is connected to the upper surface of the connector 34. In this case, the first surface 341 may be a portion of the lower surface of the connector 34, for example, the portion covered by the vertical projection of the upper surface of the laser sensing module 32 onto the lower surface of the connector 34; the second surface 342 may be a portion of the upper surface of the connector 34, for example, the portion covered by the vertical projection of the lower surface of the image sensing module 33 onto the upper surface of the connector 34.

[0068] Furthermore, the first surface 341 can be larger than the second surface 342. For example, the second surface 342 can be a portion of the upper surface of the connector 34, and the first surface 341 can be the entire lower surface of the connector 34. The connector 34 can be fixedly connected to the laser sensing module 32 and the image sensing module 33 via bolts. In this arrangement, the second surface 342 can be used to provide screw holes for connection to the image sensing module 33, and the portion outside the second surface 342 can be provided with screw holes leading to the first surface 341 for connection to the laser sensing module 32. This increases the space on the connector 34 for connecting the laser sensing module 32 and the image sensing module 33. A larger number of screw holes can be provided on the connector 34, making the connection between the connector 34 and the laser sensing module 32 and the image sensing module 33 more secure and less prone to movement. Similarly, in some embodiments, the second surface 342 can be larger than the first surface 341.

[0069] When connected by bolts, there will be some tiny gaps between the screw and the screw hole due to process errors. The relative position relationship between the connector 34, the laser sensing module 32 and the image sensing module 33, such as the position in the front-to-back direction and the left-to-right direction, can be fine-tuned through this tiny gap. After the positions of the three are adjusted to the predetermined position, the bolt connection can be glued. For example, an adhesive can be applied to the screw and nut. An anti-loosening gasket can be set on the screw. Through the above treatment, the bolt is not easy to loosen or deform. As a result, the predetermined relative position relationship can be maintained between the laser sensing module 32 and the image sensing module 33.

[0070] In some embodiments, the connector 34 may be plate-shaped. Methods for securing the connector 34 to the laser sensing module 32 and the image sensing module 33 include, but are not limited to, bolting, welding, and bonding. The connector 34 may be made of metal or plastic. For example, the connector 34 may be made of a titanium alloy, which is less susceptible to temperature deformation and thus maintains a predetermined relative position between the laser sensing module 32 and the image sensing module 33 during long-term use.

[0071] refer to Figure 7 , part of the first surface 341 is spaced apart from the laser sensing module 32 to form a receiving space 343 between the first surface 341 and the laser sensing module 32; and / or part of the second surface 342 is spaced apart from the image sensing module 33 to form a receiving space 343 between the second surface 342 and the image sensing module 33. The receiving space 343 can be used to accommodate connecting wires of the laser sensing module 32 and / or the image sensing module 33, including wires and communication lines. Specifically, two opposing flanges can be provided on the surface of the connector 34 to form the receiving space 343 between the two opposing flanges, or a groove can be dug on the surface of the connector 34. The present disclosure does not limit the formation method and shape of the receiving space 343.

[0072] Furthermore, the inventors have found that the irradiation point of the laser emitted by the laser sensing module 32 on the target object deviates from the center of the field of view of the image sensing module 33, which also leads to measurement errors. Figure 4-Figure 6 The sensing unit 30 further includes a spacer 35, which is positioned between the laser sensing module 32 and the first surface 341, and / or between the image sensing module 33 and the second surface 342. The spacer 35 is configured to adjust the relative angle a between the set emission direction L1 of the laser sensing module 32 and the set measurement direction L2 of the image sensing module 33, so that the illumination point of the laser emitted by the laser sensing module 32 on the target object is located at the center P of the field of view of the image sensing module 33. The center of the field of view of the image sensing module 33 may be the center point P of the image captured by the image sensing module 33. The spacer 35 can adjust the relative position between the laser sensing module 32 and the image sensing module 33, where the relative position includes the relative angle. The material of the gasket 35 can be a hard material such as metal, plastic, etc. Hard materials are not easy to deform. For example, the material of the gasket 35 can be brass. Brass has good ductility and can be made into a thinner gasket 35. At the same time, it has poor rebound properties. After the gasket 35 is installed in the predetermined position, there will be no large prestress. After long-term use, it is not easy to deform. Therefore, the laser sensing module 32 and the image sensing module 33 can maintain a predetermined relative position.

[0073] The laser sensing module 32 and the image sensing module 33 are fixed together by a connector 34, making the connection between them more secure and less prone to movement. Furthermore, a gasket 35 can adjust the relative angle a between the set emission direction L1 of the laser sensing module 32 and the set measurement direction L2 of the image sensing module 33. The gasket 35 is not easily deformed, so the relative angle a between the laser sensing module 32 and the image sensing module 33 is not easily changed. The illumination point of the laser sensing module 32 can be maintained at the center P of the field of view of the image sensing module 33, reducing the risk of measurement errors caused by changes in the relative position between the laser sensing module 32 and the image sensing module 33 after long-term use of the measuring equipment.

[0074] In some embodiments, reference Figure 6 The image sensing module 33 includes a lens 331 disposed on the front side and an image sensor 332 located behind the lens 331. The lens 331 can focus light from an object onto the image sensor 332, forming a clear image for capturing a picture. The set emission direction L1 of the laser sensing module 32 and the set measurement direction L2 of the image sensing module 33 intersect within a set distance range in front of the lens 331. The set distance range can be determined based on the distance from the measurement target to the lens 331. Therefore, the emission direction L1 and the set measurement direction L2 are set to be non-parallel, and the relative angle a between them is not 0 degrees. Therefore, the illumination point of the laser sensing module 32 can be located at the center P of the field of view of the image sensing module 33. Those skilled in the art can adjust the relative angle a between the laser sensing module 32 and the image sensing module 33 by adjusting the thickness of the gasket 35, thereby adjusting the distance from the intersection point P in front of the lens 331 to the lens 331. The thickness of the spacer 35 can be less than 5 mm, for example, 0.1 mm, 0.2 mm, 0.3 mm, 1 mm, 2 mm, and 3 mm. Thus, the distance between the intersection point P and the lens 331 can be adjusted simply and conveniently.

[0075] refer to Figure 4-Figure 6The side of the first and second surfaces 341 and 342 closest to the image sensor 332 is the first side, and the side closest to the lens 331 is the second side. The gasket 35 is disposed on the first side of the first surface 341 and / or the first side of the second surface 342. In the present disclosure, the gasket 35 is disposed on the side closest to the image sensor 332, that is, at the rear edge of the first and second surfaces 341 and 342. When installing the gasket 35, it can be placed on the first and / or second surfaces 341 and 342 before securing the laser sensing module 32 and the image sensing module 33 to the connector 34. Placing the gasket 35 at the edge of the connector 34 makes it easier to replace the gasket 35 than placing it in the middle. Furthermore, the gasket 35 at the edge is less likely to deform the connector 34 due to the gasket 35 protruding from the image sensor 332 and / or laser sensor surfaces.

[0076] In this manner, laser sensing module 32 and image sensing module 33 gradually approach each other from the first side to the second side. For example, when laser sensing module 32 is horizontal, image sensing module 33 is tilted downward from the first side to the second side. Consequently, by setting emission direction L1 and measurement direction L2 to be non-parallel and the relative angle a between them to be non-zero degrees, the illumination point of laser sensing module 32 can be maintained at the center P of the field of view of image sensing module 33.

[0077] refer to Figure 8 In some embodiments, multiple gaskets 35 are provided, symmetrically arranged on opposite left and right sides of the first surface 341, and / or symmetrically arranged on opposite left and right sides of the second surface 342. This ensures that the image sensing module 33 and / or the laser sensing module 32 remain horizontal and do not tilt. Furthermore, when the connector 34 is bolted to the image sensing module 33 and the laser sensing module 32, the gaskets 35 can be positioned near the bolts to ensure that the tightening force of the bolts holds the gaskets 35 in the predetermined position.

[0078] refer to Figure 9-10 The measuring device of the present disclosure further includes a drive assembly 40, which can be disposed within the base 10 and drives the shaft 20 to rotate, thereby driving the sensing unit 30 to rotate relative to the base 10 about the axis of the shaft 20. The drive assembly 40 includes a drive source 401, a worm 41, and a worm wheel 42. The drive source 401 is used to drive the worm 41, and the drive source 401 can be an electric motor. Figure 3In the figure, the transmission method between the driving source 401 and the worm 41 is gear transmission. In some embodiments, the transmission method between the driving source 401 and the worm 41 can also be a belt, chain or other transmission method, as long as the driving source 401 can drive the worm 41 to rotate. The worm 41 is arranged along the tangential direction of the worm wheel 42. The worm 41 is engaged with the worm wheel 42 and is controlled by the driving source 401 to drive the worm wheel 42. In other words, when the worm 41 rotates, it can drive the worm wheel 42 to rotate. The worm wheel 42 is fixedly connected to the shaft body 20, and both can rotate relative to the base 10. The worm wheel 42 can be integrally formed with the shaft body 20, or it can be fixedly connected by bolts, welding or the like, so that when the worm wheel 42 rotates, it can drive the shaft body 20 to rotate along the axis of the shaft body 20, thereby causing the sensing unit 30 to rotate relative to the base 10 around the axis of the shaft body 20.

[0079] refer to Figure 11 The worm gear 42 includes a first body 421, a second body 422, and a biasing elastic member 423. The first body 421 can be located on the side of the second body 422 closer to the sensing unit 30, or on the side of the second body 422 farther from the sensing unit 30. The first body 421 is coaxial with and fixedly connected to the shaft 20. The first body 421 can be integrally formed with the shaft 20, or can be fixedly connected by bolts, welding, or the like. The first body 421 is coaxial with the shaft 20, so that when the first body 421 rotates, the shaft 20 can rotate about the axis of the shaft 20. The second body 422 is coaxial with the shaft 20 and is rotatably connected relative to the first body 421. The biasing elastic member 423 is configured to apply an elastic force to the first body 421 and the second body 422, so that the first worm gear 4211 on the first body 421 and the second worm gear 4221 on the second body 422 respectively engage with the two side walls of the helical teeth 412 on the worm gear 42 in opposite rotational directions.

[0080] refer to Figure 12The first worm gear 4211 on the first body 421 is in contact with one side wall of the helical gear 412 on the worm wheel 42, while the second worm gear 4221 on the second body 422 is in contact with the other side wall of the helical gear 412 on the worm wheel 42. Under the action of the biasing elastic member 423, the first body 421 and the second body 422 tend to rotate in opposite directions. That is, the first worm gear 4211 and the second worm gear 4221 tend to move toward the helical gear 412 between them, causing the helical gear 412 to be clamped between the first worm gear 4211 and the second worm gear 4221. Even if a gap forms between the first worm gear 4211 and the second worm gear 4221 and the helical gear 412 due to wear or movement, the biasing elastic member 423 can eliminate the gap between the first worm gear 4211 and the second worm gear 4221, thereby maintaining contact with the helical gear 412. Therefore, when the helical teeth 412 on the worm 41 are driven to rotate, the first body 421 and the second body 422 can be driven to rotate synchronously, reducing the risk of reduced transmission accuracy of the drive assembly 40 due to gaps between the worm teeth and the helical teeth 412.

[0081] In some embodiments, reference Figure 13-14 The housing 31 is provided with an axial hole 311, and the shaft 20 partially extends into the housing 31 through the axial hole 311. The sensing unit 30 is supported on the base 10 through the shaft 20. The shaft 20 is driven to drive the sensing unit 30 to rotate relative to the base 10 around the axis of the shaft 20. One end of the shaft 20 is rotatably connected to the base 10. A driving device can be provided inside the base 10. The driving device can be a device that outputs torque, for example, it can be an electric motor or the above-mentioned driving assembly 40. The driving device can drive the shaft 20 to rotate around the axis of the shaft 20. The transmission method between the driving device and the shaft 20 includes but is not limited to gear transmission, belt transmission, chain transmission, etc. The other end of the shaft 20 that extends into the housing 31 through the axial hole 311 can be fixedly connected to the laser sensing module 32 or the image sensing module 33. There can be two shafts 20, which are respectively provided on both sides of the laser sensing module 32 or the image sensing module 33. The laser sensing module 32 and the image sensing module 33 can be fixedly connected to the housing 31. Thus, the shaft 20 can drive the sensing unit 30 to rotate about its axis relative to the base 10, allowing the sensing unit 30 to have a larger field of view, i.e., a larger measurement range. The cross-sectional shape of the shaft 20 in a plane perpendicular to the axis includes, but is not limited to, circular, rectangular, and polygonal shapes.

[0082] refer to Figure 13 and Figure 15The seal 50 is sleeved on the shaft body 20 and is located between the inner periphery of the shaft hole 311 and the outer periphery of the shaft body 20. The seal 50 can be elastic, for example, made of artificial or natural rubber, to seal the joint between the chamber body 31 and the shaft body 20, preventing external contaminants from entering the chamber body 31 and causing contamination or even damage to the laser sensing module 32 and / or image sensing module 33 in the chamber body 31.

[0083] For ease of understanding, the axial direction (axial direction) of the shaft body 20 is Figure 15-17 In the figure, the thickness direction (axial direction) and the height direction (radial direction) are indicated by arrows x. Figure 15-17 They are also indicated by arrows x and y respectively.

[0084] The inventors discovered that since the measuring equipment is outdoors for a long time in a relatively harsh environment, the seal 50 is prone to aging and deformation, such as cracking and warping. The harsh environment can easily lead to tiny gaps between the chamber body 31 and the shaft body 20. These tiny gaps may form leakage paths. Liquids and other pollutants may enter the interior of the chamber body 31 through the leakage path. At the same time, the sensing unit 30 is often in an active state, such as rotating relative to the base 10. The chamber body 31 and the shaft body 20 are prone to mutual movement, and the chamber body 31 is prone to lose contact with the seal 50, resulting in seal failure.

[0085] For the above problems, refer to Figure 16 and Figure 17 In the present disclosure, a first groove 51 is provided on the outer periphery of the seal 50. The inner periphery 3111 of the shaft hole 311 defined by the housing 31 is disposed within the first groove 51, and the inner surface of the first groove 51 at least partially aligns with the surface of the inner periphery 3111 of the shaft hole 311. The outer periphery of the seal 50 refers to the circumference of the seal 50 away from the shaft body 20. The inner periphery 3111 of the shaft hole 311 refers to the edge portion of the inner surface 3112 of the shaft hole 311. The surface of the inner periphery 3111 of the shaft hole 311 includes the inner surface 3112 of the shaft hole 311 and the surface surrounding the inner periphery 3111 of the shaft hole 311, namely, a portion of the inner surface and a portion of the outer surface of the housing 31. For example, the inner surface 3112 of the shaft hole 311 may align with the bottom wall 511 of the first groove 51; and portions of the inner surface and outer surface of the housing 31 may respectively align with the two sidewalls 512 of the first groove 51. As a result, the contact area between the tank body 31 and the seal 50 is larger, extending the leakage path between the seal 50 and the tank body 31. Furthermore, the two sidewalls 512 of the first groove 51 limit the displacement of the tank body 31 in the thickness direction (x direction), maintaining the tank body 31 in a predetermined position and preventing separation between the tank body 31 and the seal 50. Furthermore, when the tank body 31 is mounted on the seal 50, the first groove 51 serves as a positioning mechanism, preventing assembly errors between the tank body 31 and the seal 50.

[0086] In the above embodiment, the first groove 51 increases the contact area between the seal 50 and the housing 31, extending the leakage path between the seal 50 and the housing 31, thereby reducing the risk of contaminants infiltrating the interior of the sensing unit 30. Furthermore, the first groove 51 on the outer periphery of the seal 50 maintains the housing 31 in a predetermined position, preventing separation between the housing 31 and the seal 50 and causing sealing failure. Furthermore, the first groove 51 on the outer periphery of the seal 50 reduces assembly errors between the housing 31 and the seal 50, facilitating installation of the housing 31 in a predetermined position.

[0087] Further, refer to Figure 16 and Figure 17 In the present disclosure, a second groove 21 is provided on the outer circumference of the shaft body 20. The seal 50 includes a base 52, which is at least partially located within the second groove 21, with the inner surface of the second groove 21 at least partially aligned with the outer surface of the base 52. The base 52 of the seal 50 has an upper surface 521, a bottom surface 522, and two side surfaces 523. The upper surface 521 of the base 52 can serve as the bottom wall 511 of the first groove 51. The bottom surface 522 of the base 52 can align with the bottom wall 211 of the second groove 21. The two side surfaces 523 of the base 52 can respectively align with the side walls 212 of the second groove 21. This creates a larger contact area between the shaft body 20 and the seal 50, extending the leakage path between the seal 50 and the shaft body 20, thereby reducing the risk of contaminants infiltrating the interior of the sensing unit 30. Furthermore, the two side walls of the second groove 21 can limit the displacement of the seal 50 in the thickness direction, maintaining the seal 50 in a predetermined position. In addition, when the seal 50 is installed on the shaft body 20, the second groove 21 can play a positioning role, avoiding assembly errors between the shaft body 20 and the seal 50, and facilitating the installation of the seal 50 to a preset position.

[0088] In some embodiments, reference Figures 18-20 , the measuring device of the present disclosure further includes a fill light 60. For ease of understanding, the radial direction of the lens 331 is Figure 21-24 In the figure, the axial direction of the lens 331 is indicated by the arrow x. Figure 20-24 Indicated by arrow y.

[0089] The fill light 60 can be positioned around the lens 331. At night or in low-light environments, the fill light 60 can illuminate the measurement target. This disclosure does not limit the type of fill light 60; the light emitted by the fill light 60 can include visible light and non-visible light, such as infrared light. By illuminating the measurement target with the fill light 60, the image sensing module 33 can capture a clear image of the measurement target in dim conditions. If the light emitted by the fill light 60 is infrared light, the image sensing module 33 can be a device capable of receiving infrared light, such as an infrared camera. Positioning the fill light 60 around the lens 331 aligns the direction of the light emitted by the fill light 60 with the shooting direction of the lens 331, ensuring that the light emitted by the fill light 60 illuminates the measurement target. This disclosure does not limit the distance between the fill light 60 and the lens 331 in the radial direction x of the lens 331. This distance is the vertical distance between the centroid of the fill light 60 and the outer edge of the lens 331. This distance can be maintained within an appropriate range so that the range illuminated by the fill light 60 covers the shooting range of the image sensing module 33, for example, 2 mm to 30 mm, specifically, 5 mm, 8 mm, 12 mm, 20 mm, or 25 mm. Those skilled in the art can determine this distance based on the shooting range of the lens 331 and the illumination range of the fill light 60.

[0090] refer to Figures 18-20 The chamber body 31 includes a front wall 312. A first hollow portion 3121 is defined in the front wall 312, and the orthographic projection of the first hollow portion 3121 on the front wall 312 completely covers the orthographic projection of the lens 331 on the front wall 312. The position of the first hollow portion 3121 corresponds to the position of the lens 331, and the lens 331 can capture the measurement image through the first hollow portion 3121.

[0091] In the prior art, the fill light 60 is generally arranged on the outer end surface of the front wall 312, for example, Figure 21 As shown, the fill light 60 is positioned outside the first hollow portion 3121. In the axial direction y of the lens 331, the front wall 312 is higher than the lens 331, and the fill light 60 protrudes from the outer end surface of the front wall 312. To ensure that the light emitted by the fill light 60 can illuminate the measurement target, the fill light 60 must be located within a certain distance from the outer edge of the first hollow portion 3121 or the outer edge of the lens 331. These factors make it easy for the light emitted by the fill light 60 to penetrate the lens 331, affecting the captured image.

[0092] Therefore, if Figure 22As shown, the present disclosure defines a second hollow portion 3122 on the circumferential outer side of the first hollow portion 3121 on the front wall 312. The orthographic projection of the second hollow portion 3122 on the front wall 312 completely covers the orthographic projection of the fill light 60 on the front wall 312. In other words, the position of the second hollow portion 3122 corresponds to the fill light 60, and the fill light 60 can be partially located within the second hollow portion 3122. The fill light 60 can illuminate the measurement target through the second hollow portion 3122.

[0093] refer to Figure 19 , Figure 20 and Figure 22 The portion between the first hollow portion 3121 and the second hollow portion 3122 on the front wall 312 defines a light shielding portion 61. The light shielding portion 61 is configured such that, in the axial direction y of the lens 331, the height of the outer end surface 611 of the light shielding portion 61 is greater than or equal to the height of the fill light 60. The light shielding portion 61 can block light from the fill light 60 directed toward the lens 331. In some embodiments, the thickness of the front wall 312 can be greater than the height of the fill light 60, and the fill light 60 can be entirely located within the second hollow portion 3122. In this case, the light shielding portion 61 can be the wall between the first hollow portion 3121 and the second hollow portion 3122. The sidewalls of the second hollow portion 3122 can block light from the fill light 60 directed toward the lens 331.

[0094] refer to Figure 18 , the measurement component also includes a dustproof plate 63, which can be sealed on the front wall 312. The dustproof plate 63 can be sealed on the entire front wall 312, or it can be sealed on part of the front wall 312, for example, it can only cover the first hollow part 3121 and / or the second hollow part 3122. The dustproof plate 63 can prevent external pollutants, such as water and dust, from entering the warehouse body 31 through the first hollow part 3121 and the second hollow part 3122, thereby contaminating or even damaging the image sensing module 33 inside the warehouse body 31. The dustproof plate 63 can be light-transmissive, so that the light emitted by the fill light 60 can pass through the dustproof plate 63 to illuminate the measurement target, and the image sensing module 33 can photograph the measurement target through the dustproof plate 63. The present disclosure does not limit the material of the dustproof plate 63, for example, it can be various transparent materials such as glass and plastic. As Figure 23 As shown in FIG, after the dustproof plate 63 is set, part of the light emitted by the fill light 60 will be reflected by the dustproof plate 63. If the dustproof plate 63 is spaced apart from the outer end surface 611 of the light shielding portion 61, part of the light emitted by the fill light 60 will be reflected by the dustproof plate 63 and enter the lens 331. Therefore, Figure 24 As shown, the dustproof plate 63 of the present disclosure can be in contact with at least the outer end surface 611 of the light shielding portion 61. Therefore, the dustproof plate 63 will not reflect the light emitted by the fill light 60 into the lens 331.

[0095] According to the above embodiment, the present disclosure utilizes the portion between the first hollow portion 3121 and the second hollow portion 3122 on the front wall 312 as the light shield 61. In the radial direction of the lens 331, the light shield 61 is located between the fill light 60 and the lens 331. In the axial direction of the lens 331, the height of the outer end surface 611 of the light shield 61 is greater than or equal to the height of the fill light 60. Thus, the light shield 61 blocks light from the fill light 60 directed toward the lens 331. Furthermore, to prevent light from the fill light 60 from entering the lens 331 after being reflected by the dust shield 63, the dust shield 63 is affixed to the outer end surface 611 of the light shield 61. Thus, the light shield 61 blocks both light directly directed toward the lens 331 and light reflected by the dust shield 63, preventing light from the fill light 60 from entering the lens 331 of the image sensing module 33 and affecting the image captured by the image sensing module 33.

[0096] In some embodiments, reference Figure 25 and Figure 26 The measuring device of the present disclosure also includes a support member 70, the first end of which is fixedly connected to the shaft body 20, and the second end of which is fixedly connected to the silo 31 by bolts. Specifically, the support member 70 includes two first connecting portions 71, the first ends of which are fixedly connected to the shaft body 20. The second ends of the two first connecting portions 71 are fixedly connected to the silo 31 by bolts. In some embodiments, a second connecting portion 72 can be provided, the two ends of which are respectively connected to the second ends of the two first connecting portions 71, and a first alignment portion 73 is provided on the second connecting portion 72 to indirectly set the first alignment portion 73 at the second end of the support member 70. The second connecting portion 72 can support the two first connecting portions 71, making the structure more secure. In some embodiments, the support member 70 can also be a connecting portion. It is sufficient as long as the silo 31 and the shaft body 20 can be fixed together by the support member 70 to achieve synchronous rotation of the silo 31 and the shaft body 20.

[0097] In order to conveniently fix the hopper body 31 and the support part, the present disclosure provides a first alignment portion 73 on the second end of the support member 70, and a second alignment portion 74 corresponding to the first alignment portion 73 is provided on the hopper body 31. A first screw hole 731 is provided on the first alignment portion 73, and a second screw hole 741 is provided on the second alignment portion 74. When the first alignment portion 73 and the second alignment portion 74 are aligned, the first screw hole 731 and the second screw hole 741 are aligned. The first alignment portion 73 and the second alignment portion 74 can be a groove and a protrusion, respectively, and the first screw hole 731 and the second screw hole 741 are respectively provided on the groove and the protrusion. During assembly, the protrusion can be first inserted into the groove to pre-align the first screw hole 731 and the second screw hole 741, so that the bolts can be screwed into the first screw hole 731 and the second screw hole 741 in sequence, thereby fixing the hopper body 31 to the support member 70.

[0098] It should be noted that the various elements described in the above specific embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0099] It should also be noted that, in the description of this application, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For example, abutment can be direct abutment or indirect abutment through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances. When a specific device is described as being located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.

[0100] It should be understood that multiple components and / or parts can be provided by a single integrated component or part. Alternatively, a single integrated component or part can be divided into separate multiple components and / or parts. The disclosure "one" or "an" used to describe a component or part is not intended to exclude other components or parts.

[0101] It should be understood that although the terms “first” or “second” etc. may be used in the present disclosure to describe various elements, these elements are not defined by these terms, and these terms are only used to distinguish one element from another.

[0102] The basic principles of the present disclosure have been described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, and effects mentioned in this disclosure are merely illustrative and not restrictive, and should not be construed as necessarily possessed by each embodiment of the present disclosure. Furthermore, the specific details disclosed above are provided for illustrative purposes and to facilitate understanding, rather than as limitations. These details do not limit the present disclosure to necessarily being implemented using these specific details.

[0103] The above are only specific embodiments of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A measuring device, characterized in that include: a sensing unit comprising a housing, a laser sensing module at least partially housed within the housing, an image sensing module, and a connector, wherein the laser sensing module is configured to emit laser light toward a target along a predetermined emission direction, and the image sensing module is configured to acquire image measurement information along a predetermined measurement direction; the laser sensing module and the image sensing module are respectively connected to first and second surfaces of the connector, which are located above and below each other; A portion of the first surface is spaced apart from the laser sensing module to form an accommodation space between the first surface and the laser sensing module; and / or A portion of the second surface is spaced apart from the image sensing module to form an accommodating space between the second surface and the image sensing module.

2. The measuring device according to claim 1, characterized in that The invention also includes a gasket, which is arranged between the laser sensing module and the first surface and / or between the image sensing module and the second surface, and is used to adjust the relative angle between the set emission direction of the laser sensing module and the set measurement direction of the image sensing module so that the irradiation point of the laser emitted by the laser sensing module on the target object is located at the center of the field of view of the image sensing module.

3. The measuring device according to claim 2, characterized in that The image sensing module includes a lens arranged on the front side and an image sensor located behind the lens. The set emission direction of the laser sensing module and the set measurement direction of the image sensing module intersect within a set distance range in front of the lens.

4. The measuring device according to claim 3, characterized in that The side of the first surface and the second surface close to the image sensor is a first side, and the side close to the lens is a second side; The gasket is arranged on the first side of the first surface, and / or the gasket is arranged on the first side of the second surface; The laser sensing module and the image sensing module are gradually approached along a direction from the first side to the second side.

5. The measuring device according to claim 1, characterized in that The connecting piece is made of titanium alloy material.

6. The measuring device according to claim 4, characterized in that There are multiple gaskets, each of which has a thickness of less than 5 mm. The multiple gaskets are symmetrically arranged on the left and right opposite sides of the first surface, and / or the multiple gaskets are symmetrically arranged on the left and right opposite sides of the second surface.

7. The measuring device according to claim 1, characterized in that The invention also includes a base, a shaft and a driving assembly, wherein the sensing unit is rotatably supported on the base by the shaft, and the driving assembly is disposed in the base and drives the shaft to rotate so as to drive the sensing unit to rotate relative to the base around the axis of the shaft; The drive assembly includes a drive source, a worm and a worm wheel, wherein the drive source is used to drive the worm; the worm is engaged with the worm wheel and is controlled by the drive source to drive the worm wheel, and the worm wheel is fixedly connected to the shaft; The worm gear includes a first body, a second body and a biasing elastic member, the first body is coaxial with the shaft and fixedly connected, the second body is coaxial with the shaft and rotatably connected relative to the first body; The biasing elastic member is configured to apply elastic force to the first body and the second body so that the first worm gear on the first body and the second worm gear on the second body respectively engage with two side walls of the helical teeth on the worm wheel in opposite rotation directions.

8. The measuring device according to claim 1, characterized in that The device further comprises a base and a shaft, wherein the sensing unit is rotatably supported on the base via the shaft, the housing is provided with a shaft hole, one end of the shaft passes through the shaft hole and partially extends into the housing, and is fixedly connected to the laser sensing module or the image sensing module; It also includes a seal, which is sleeved on the shaft body and located between the inner periphery of the shaft hole and the outer periphery of the shaft body. The outer periphery of the seal is provided with a first groove, and the inner periphery of the shaft hole defined by the hopper body is provided in the first groove, and the inner surface of the first groove at least partially fits the surface of the inner periphery of the shaft hole.

9. The measuring device according to claim 8, characterized in that A second groove is provided on the outer circumferential surface of the shaft body. The sealing member includes a base portion. The base portion is at least partially located in the second groove, and the inner surface of the second groove is at least partially in contact with the outer surface of the base portion.

10. The measuring device according to claim 1, characterized in that It also includes a fill light and a dustproof plate, the image sensing module includes a lens, and the warehouse body includes a front wall; A first hollow portion is formed on the front wall, and the orthographic projection of the first hollow portion on the front wall completely covers the orthographic projection of the lens on the front wall; a second hollow portion is formed on the front wall in a circumferential outer side of the first hollow portion, and the orthographic projection of the second hollow portion on the front wall completely covers the orthographic projection of the fill light on the front wall; The portion between the first hollow portion and the second hollow portion on the front wall is a light shielding portion, and the light shielding portion is configured such that the height of an outer end surface thereof in the axial direction of the lens is higher than or equal to the height of the fill light; The dustproof plate is sealed on the front wall and is at least in contact with the outer end surface of the light shielding portion.

11. The measuring device according to claim 1, characterized in that It also includes a base, a shaft and a support member, the sensing unit is rotatably supported on the base through the shaft body, the first end of the support member is fixedly connected to the shaft body, and the second end of the support member is fixedly connected to the warehouse body through a bolt, wherein a first alignment portion is provided at the second end, and a second alignment portion corresponding to the first alignment portion is provided on the warehouse body, a first screw hole is provided on the first alignment portion, and a second screw hole is provided on the second alignment portion, and when the first alignment portion and the second alignment portion are aligned, the first screw hole and the second screw hole are aligned.

Images