CN221198344U - Contour sensor - Google Patents

Abstract

The application discloses a contour sensor, which comprises a shell, a first image acquisition assembly, a second image acquisition assembly and a light source assembly, wherein the first image acquisition assembly, the second image acquisition assembly and the light source assembly are all arranged in the shell; the first image acquisition assembly and the second image acquisition assembly are respectively positioned at two sides of the light source assembly, the first image acquisition assembly is provided with a first front end face, the second image acquisition assembly is provided with a second front end face, the light source assembly is provided with a third front end face, a first set included angle and a second set included angle are respectively arranged between the first front end face, the second front end face and the third front end face, and the centers of the first front end face and the second front end face are respectively provided with a first set interval and a second set interval with the center of the third front end face. The application can collect images of the laser contours diffusely reflected on the surface of the measured object from two different directions, and avoid the blind area of the visual field so as to meet the requirements of measurement and detection.

Description

Contour sensor

Technical Field

The application relates to the technical field of image acquisition, in particular to a contour sensor.

Background

With the rapid development of the technology level, the demands for measurement and detection are also increasing in the industrial field. The 3D line laser contour sensor is based on a line structured light technology of a trigonometry, an image acquisition system acquires the laser contour diffusely reflected by the surface of a measured object, and three-dimensional contour data of the surface of the measured object is obtained through a high-precision measurement algorithm built in hardware, so that three-dimensional space information of a target object is restored. The contour sensor has the advantages of rapidness, real time, non-contact and the like, and is widely applied to detection of parts on a transmission belt and used for measuring specific contours of the surface of an object. The profile sensor in the related art generally comprises a light source assembly and an image acquisition assembly, wherein the light source assembly emits laser to a measured object, and the image acquisition assembly acquires the laser profile diffusely reflected by the surface of the measured object. In general detection and non-shielding scene application, accurate measurement can be realized generally, but for some special situations, such as shielding of peripheral structural members, stray light interference of a detected object, and the like, problems of blind areas of a field of view and the like can be caused by adopting a single image acquisition component for single scanning in related technologies, and the detection requirement can not be met. In addition, since the contour sensor requires extremely high assembly accuracy for each component, the contour sensor has a high requirement for processing accuracy of the housing, and this brings about a considerably high manufacturing cost.

Disclosure of utility model

The present application aims to solve one of the technical problems in the related art to a certain extent. To this end, the application provides a contour sensor.

In order to achieve the above purpose, the application adopts the following technical scheme: the contour sensor comprises a shell, a first image acquisition assembly, a second image acquisition assembly and a light source assembly, wherein the first image acquisition assembly, the second image acquisition assembly and the light source assembly are arranged in the shell; the first image acquisition assembly and the second image acquisition assembly are respectively positioned on two sides of the light source assembly, the first image acquisition assembly is provided with a first front end face, the second image acquisition assembly is provided with a second front end face, the light source assembly is provided with a third front end face, a first set included angle is arranged between the first front end face and the third front end face, a second set included angle is arranged between the second front end face and the third front end face, a first set interval is arranged between the center of the first front end face and the center of the third front end face, and a second set interval is arranged between the center of the second front end face and the center of the third front end face.

The application of the application has the following beneficial effects: through set up first image acquisition subassembly and second image acquisition subassembly respectively in the both sides of light source subassembly, when measuring the detection to the measured object that has the situation such as peripheral structure shelter from, the measured object itself has the stray light to interfere, the laser profile of accessible two different directions to measured object surface diffuse reflection carries out image acquisition, when the problem that has the visual field blind area is gathered to one side like this, can follow the opposite side and do not have the direction of visual field blind area and carry out image acquisition to satisfy the demand of measurement detection.

Optionally, the first image acquisition assembly and the second image acquisition assembly are symmetrically arranged on two sides of the light source assembly, the first set included angle and the second set included angle are the same in size, and the first set interval and the second set interval are the same in size.

Optionally, the shell comprises a bottom wall and a side wall surrounding the bottom wall, the side wall and the bottom wall are matched to form a containing cavity, and the first image acquisition assembly, the second image acquisition assembly and the light source assembly are all positioned in the containing cavity; the diapire is provided with the assembly boss, the assembly boss has the fitting surface, the roughness of fitting surface is less than the setting value, first image acquisition subassembly, second image acquisition subassembly and light source subassembly all install in the fitting surface.

Optionally, the assembly boss includes first boss and two second bosses that are located respectively the both sides of first boss, the assembly face includes the first assembly face of first boss and the second assembly face of second boss, the light source subassembly install in first assembly face, first image acquisition subassembly install in one the second assembly face, second image acquisition subassembly install in another the second assembly face.

Optionally, the first image acquisition component and the second image acquisition component each include a lens component and a sensor component, the lens component includes a lens, the sensor component includes an image sensor, along the direction of acquiring the optical signal, the image sensor is disposed behind the lens, and the lens is used for focusing and imaging the reflected light on the image sensor.

Optionally, the sensor assembly further includes a mounting plate, the image sensor is fixed in the mounting plate, one of the mounting plate and the corresponding second assembly surface is provided with first reference column, the other one is provided with the first locating hole of first reference column looks adaptation, first locating hole is the slotted hole, first reference column sets up in first locating hole, and the mounting plate passes through fastener fixed mounting in the second assembly surface.

Optionally, the lens assembly further includes a mounting block, the lens is fixed on the mounting block, one of the mounting block and the corresponding second assembly surface is provided with a second positioning column, the other is provided with a second positioning hole adapted to the second positioning column, the second positioning column cooperates with the second positioning hole to limit the mounting block to translate relative to the second assembly surface, and the mounting block is fixedly mounted on the second assembly surface through a fastener.

Optionally, the second boss is further provided with a positioning surrounding edge, the mounting block is provided with a positioning end portion adapted to the positioning surrounding edge on the corresponding second boss, and the positioning surrounding edge is matched with the positioning end portion to limit the mounting block to rotate relative to the second boss.

Optionally, the light source assembly includes the installation shell and set up in laser instrument in the installation shell, one of installation shell and first boss is provided with the third reference column, another be provided with the third locating hole of third reference column looks adaptation, the third reference column cooperatees with the third locating hole in order to restrict the relative first boss translation of installation shell, and the installation shell passes through fastener fixed mounting in first boss.

Optionally, the profile sensor still includes the lid, the top of lateral wall is formed with spacing post, the lid be provided with spacing breach of spacing post looks adaptation, spacing post cooperatees with spacing breach in order to restrict lid relative casing horizontal migration to the lid passes through fastener fixed mounting in the lateral wall.

These features and advantages of the present application will be disclosed in more detail in the following detailed description and the accompanying drawings. The best mode or means of the present application will be described in detail with reference to the accompanying drawings, but is not limited to the technical scheme of the present application. In addition, these features, elements, and components are shown in plural in each of the following and drawings, and are labeled with different symbols or numerals for convenience of description, but each denote a component of the same or similar construction or function.

Drawings

The application is further described below with reference to the accompanying drawings:

fig. 1 is a schematic structural diagram of a contour sensor according to an embodiment of the present application;

FIG. 2 is an exploded view of a profile sensor provided in an embodiment of the present application;

FIG. 3 is a schematic structural view of the housing;

FIG. 4 is a schematic view of the structure of the lens assembly and sensor assembly;

FIG. 5 is a bottom schematic view of the lens assembly and sensor assembly;

FIG. 6 is an exploded view of the lens assembly and sensor assembly;

Fig. 7 is a schematic structural view of a light source assembly.

The device comprises a shell, a first boss, a third positioning column, a second boss, a first positioning column, a second positioning column, a positioning surrounding edge, a limiting column, an adjusting port cover plate, a cover body, a limiting notch, a lens assembly, a mounting block, a second positioning hole, a positioning end portion, a lens, a first front end surface, a sensor assembly, a mounting plate, a first positioning hole, a first image sensor, a light source assembly, a second light source assembly, a mounting shell, a third positioning hole, a first laser, a first image acquisition assembly, a second image acquisition assembly, a main plate and a bolt.

Detailed Description

Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The examples in the embodiments are intended to illustrate the present application and are not to be construed as limiting the present application.

Reference in the specification to "one embodiment" or "an example" means that a particular feature, structure, or characteristic described in connection with the embodiment itself can be included in at least one embodiment of the disclosure. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment.

Examples: the present embodiment provides a contour sensor, as shown in fig. 1 and 2, which includes a housing 1, a first image capturing component 6, a second image capturing component 7, and a light source component 5, the first image capturing component 6, the second image capturing component 7, and the light source component 5 being all disposed within the housing 1. The first image acquisition component 6 and the second image acquisition component 7 are respectively located at two sides of the light source component 5, the first image acquisition component 6 is provided with a first front end face, the second image acquisition component 7 is provided with a second front end face, the light source component 5 is provided with a third front end face, a first set included angle is formed between the first front end face and the third front end face, a second set included angle is formed between the second front end face and the third front end face, the center of the first front end face and the center of the third front end face are provided with a first set interval, and the center of the second front end face and the center of the third front end face are provided with a second set interval. In order to briefly explain the working principle of the contour sensor, fig. 1 and 2 also show the irradiation light emitted by the light source assembly 5 to the object to be measured and the reflection light reflected by the object to be measured after irradiation to the first image acquisition assembly 6 and the second image acquisition assembly 7. When the contour sensor is applied, the first image acquisition component 6 and the second image acquisition component 7 are respectively arranged on two sides of the light source component 5, when the measured object with the conditions of shielding of a peripheral structural component, stray light interference of the measured object and the like is measured and detected, the laser contours diffusely reflected on the surface of the measured object can be subjected to image acquisition in two different directions, so that when the problem of a visual field blind area exists in one side acquisition, the image acquisition can be carried out in the direction of the other side without the visual field blind area, and the measurement and detection requirements are met.

The first front end face, the second front end face, and the third front end face described in the present embodiment are described with reference to fig. 5 and 6, and the first image pickup element 6 and the second image pickup element 7 in the present embodiment each include the lens element 3 and the sensor element 4, and the lens element 3 includes the lens 31. The sensor assembly 4 is disposed behind the lens 31 in a direction to collect the light signal, so that the lens 31 focuses the reflected light onto the sensor assembly 4. The lens 31 includes a cylindrical lens mount tube and an optical glass sheet disposed inside the lens mount tube, and the first front end surface 310 is the front end surface of the lens mount tube. Similarly, the second front end surface in this embodiment is the front end surface of the lens mount barrel of the lens in the second image capturing assembly. And the third front end surface is the front end surface of a mounting cylinder for mounting the light source in the light source assembly. The above structural design is essentially to make the optical axis (optical term, non-solid structure) of the first image acquisition component 6 and the optical axis of the second image acquisition component 7 form a certain angle (called as intersection angle) with the optical axis of the light source component 5; the optical center of the first image capturing assembly 6 (optical term, non-solid structure) and the optical center of the second image capturing assembly 7 are at a distance from the optical center of the light source assembly 5 (referred to as the base line distance). The specific values of the intersection angle and the base line distance can be designed according to the requirements of the use scene of the product, and correspondingly, the first set included angle, the second set included angle, the first set interval and the second set interval in the embodiment are also designed according to the requirements of the use scene of the product.

In this embodiment, the first image capturing component 6 and the second image capturing component 7 are symmetrically disposed on two sides of the light source component 5, and the first set included angle and the second set included angle are the same in size, and the first set pitch and the second set pitch are the same in size. This facilitates a simplified measurement algorithm for deriving three-dimensional profile data of the surface of the object under test. It will be readily appreciated that in alternative embodiments, other arrangements may be selected, as long as the image acquisition required for measurement and detection is satisfied.

As mentioned above, the contour sensor product has extremely high requirements on assembly precision, and correspondingly has extremely high requirements on machining precision of the shell, so that the manufacturing difficulty is high, the yield of the shell is low, and the production cost of the shell is high. Referring to fig. 3, the housing 1 in this embodiment includes a bottom wall and a side wall disposed around the bottom wall, the side wall and the bottom wall cooperate to form a cavity, and the first image capturing assembly 6, the second image capturing assembly 7 and the light source assembly 5 are all located in the cavity; the diapire is provided with the assembly boss, and the assembly boss has the fitting surface, and the roughness of fitting surface is less than the setting value, and first image acquisition subassembly 6, second image acquisition subassembly 7 and light source module 5 all install in the fitting surface. Thus, the housing 1 in the present embodiment requires only a high-precision machining and manufacturing of a partial position of the bottom wall (i.e., a position on the bottom wall designed as an assembly boss) at the time of production and manufacture. The manufacturing cost is reduced, and the yield of the shell 1 can be improved. The setting value in the "flatness of the assembly surface is smaller than the setting value" can be set according to the assembly requirement, in this embodiment, the setting value is 0.05, and in an alternative embodiment, the setting value can be a selected value between 0.03 and 0.08.

Further, in this embodiment, the number and positions of the assembling bosses are designed according to the number and positions of the light source assembly 5, the first image capturing assembly 6 and the second image capturing assembly 7, so the assembling boss in this embodiment includes a first boss 10 and two second bosses 11, and the two second bosses 11 are respectively located on two sides of the first boss 10. Correspondingly, the assembly surfaces comprise a first assembly surface of the first boss 10 and a second assembly surface of the second boss 11, the light source assembly 5 is arranged on the first assembly surface, the first image acquisition assembly 6 is arranged on one second assembly surface, and the second image acquisition assembly 7 is arranged on the other second assembly surface. This arrangement reduces the overall size of the fitting boss as much as possible, thereby reducing the area of the housing 1 that needs to be manufactured with high precision. It is readily understood that the mounting boss may also be designed as a whole or more finely provided in greater numbers.

As shown in fig. 4, 5 and 6, the first image pickup element 6 and the second image pickup element 7 in the present embodiment each include a lens element 3 and a sensor element 4, the lens element 3 includes a lens 31, the sensor element 4 includes an image sensor 41, the image sensor 41 is disposed behind the lens 31 in a direction in which an optical signal is picked up, and the lens 31 serves to focus reflected light to the image sensor 41. For ease of assembly, the sensor assembly 4 in this embodiment further includes a mounting plate 40, the image sensor 41 being fixed to the mounting plate 40; the lens assembly 3 in the present embodiment further includes a mounting block 30, and a lens 31 is fixed to the mounting block 30.

Wherein, mounting panel 40 is provided with first locating hole 400, and the corresponding second fitting surface of mounting panel 40 is provided with first locating column 110, first locating column 110 and first locating hole 400 looks adaptation to first locating hole 400 is the slotted hole, and first locating column 110 sets up in first locating hole 400. In this embodiment, the first positioning columns and the first positioning holes are both provided with two and one-to-one correspondence, so that after the first positioning columns are inserted into the first positioning holes in the assembly process, the mounting plate can only translate along the second assembly surface and cannot rotate. The mounting plate 40 is fixedly mounted to the second mounting surface by means of a fastener, in this embodiment a bolt 9, but in alternative embodiments a connection structure such as a fastening pin, a clamping post or the like is also possible. And the mounting block 30 is provided with a second positioning hole 300, a second assembling surface corresponding to the mounting block 30 is provided with a second positioning column 111, the second positioning column 111 is matched with the second positioning hole 300, and the second positioning column 111 is matched with the second positioning hole 300 to limit the translation of the mounting block 30 relative to the second assembling surface. The mounting block 30 is fixedly mounted to the second mounting surface by a fastener, which in the embodiment described above is a bolt 9 in other alternative embodiments, and may be a connection structure such as a fastening pin or a clip. Further, the second boss 11 is further provided with a positioning surrounding edge 112, the mounting block 30 is provided with a positioning end 301 adapted to the positioning surrounding edge 112 on the corresponding second boss 11, and the positioning surrounding edge 112 cooperates with the positioning end 301 to limit the rotation of the mounting block 30 relative to the second boss 11.

During assembly, the second positioning hole 300 on the mounting block 30 is aligned with the second positioning column 111 on the second assembly surface corresponding to the second positioning hole, and meanwhile, the positioning end 301 on the mounting block 30 is matched and abutted with the positioning surrounding edge 112 on the second assembly surface, so that the mounting block 30 can not horizontally move relative to the second assembly surface any more, and then the mounting block 30 is fixedly mounted on the second assembly surface by using the bolts 9, so that the assembly of the lens assembly 3 is completed. Then, the first positioning hole 400 on the mounting plate 40 is aligned with the first positioning post 110 on the second assembling surface corresponding to the first positioning hole 400, and then the mounting plate 40 is slightly moved along the length direction of the first positioning hole 400 according to the requirement, so that the position of the image sensor 41 relative to the lens 31 meets the requirement (a special calibration instrument can be used for position confirmation), after the position confirmation meets the requirement, the mounting plate 40 is fixedly mounted on the second assembling surface by using the bolt 9, and the assembly of the sensor assembly 4 is completed.

In addition, in this embodiment, the first positioning hole 400 is provided on the mounting plate 40, and in an alternative embodiment, the first positioning post may be provided on the mounting plate, and the first positioning hole may be correspondingly provided on the second mounting surface. Similarly, in this embodiment, the mounting block is provided with a second positioning hole, and in an alternative embodiment, the mounting block may also be provided with a second positioning column, and the second positioning hole is correspondingly disposed on the second assembly surface.

As shown in fig. 7, the light source assembly 5 in the present embodiment includes a mounting case 50 and a laser 51 disposed in the mounting case 50, the mounting case 50 is provided with a third positioning hole 500, a first fitting surface on the first boss 10 corresponding thereto is provided with a third positioning post 100, the third positioning post 100 and the third positioning hole 500 are adapted, and the third positioning post 100 cooperates with the third positioning hole 500 to restrict translation of the mounting case 50 relative to the first boss 10. The mounting shell 50 is fixedly mounted to the first boss 10 by a fastener, in this example a bolt 9, and in other alternative embodiments, may be a connection structure such as a fastening pin or a clip.

During assembly, the third positioning hole 500 on the mounting shell 50 is aligned with the third positioning post 100 on the first assembly surface, at this time, the mounting shell 50 can rotate relative to the first assembly surface, the mounting shell 50 can be slightly rotated as required to enable the angle of the light emitting surface of the laser 51 relative to the housing 1 to meet the requirement, and then the mounting shell 50 is fixedly mounted on the first assembly surface by using the bolts 9, so that the assembly of the light source assembly 5 is completed. In addition, in this embodiment, the third positioning hole 500 is provided on the mounting shell 50, and in an alternative embodiment, a third positioning post may also be provided on the mounting shell, and the third positioning hole is correspondingly provided on the first assembling surface.

As shown in fig. 2 and 3, the profile sensor further includes a cover 2, a limit post 12 is formed at the top end of the side wall of the housing 1, the cover 2 is provided with a limit notch 20 adapted to the limit post 12, and the limit post 12 cooperates with the limit notch 20 to limit the horizontal movement of the cover 2 relative to the housing 1. The cover 2 is fixedly mounted on the side wall through a fastener, in this embodiment, the fastener is a bolt 9, and in other alternative embodiments, the cover may also be a connection structure such as a fastening pin, a clamping column, and the like.

The contour sensor further comprises a main board 8, the main board 8 is also arranged in the containing cavity, a plurality of support columns are further arranged on the bottom wall of the shell in the embodiment, the support columns are provided with threaded holes, the main board 8 is placed on the mounting columns during assembly, and the main board 8 is penetrated through the threaded holes of the support columns by using screws and screwed into the threaded holes of the support columns so as to fixedly mount the main board 8 on the support columns. The motherboard 8 can be conveniently spaced from the bottom wall of the shell in such a way that enough assembly space is reserved for the assembly of the first image acquisition assembly, the second image acquisition assembly and the light source assembly, and meanwhile, the wiring operation between the motherboard 8 and the first image acquisition assembly, the second image acquisition assembly and the light source assembly for realizing electric connection is also convenient.

In addition, in this embodiment, two openings are further provided on the side wall of the housing 1, the positions of the two openings respectively correspond to the positions of the first image acquisition assembly 6 and the second image acquisition assembly 7, and an adjusting port cover plate 13 is provided at each of the two openings. The image sensor 41 may also be adjusted through the above-described opening after assembly is completed but when adjustment of the position of the image sensor 41 is also required. Specifically, the image sensor 41 and the mounting shell 50 are connected together through screw threads, after the adjusting port cover plate 13 is disassembled, the adjusting port cover plate is extended into the accommodating cavity from the opening by using a screw driver, and the angle and the position of the image sensor 41 relative to the mounting shell 50 can be slightly adjusted by screwing the screw on the image sensor 41. Of course, in other alternative embodiments, the opening and the adjusting port cover may not be provided, and when the position of the image sensor needs to be adjusted, the cover may be removed for adjustment.

The above is only a specific embodiment of the present application, but the scope of the present application is not limited thereto, and it should be understood by those skilled in the art that the present application includes but is not limited to the accompanying drawings and the description of the above specific embodiment. Any modifications which do not depart from the functional and structural principles of the present application are intended to be included within the scope of the appended claims.

Claims (10)

1. The contour sensor is characterized by comprising a shell (1), a first image acquisition component (6), a second image acquisition component (7) and a light source component (5), wherein the first image acquisition component (6), the second image acquisition component (7) and the light source component (5) are arranged in the shell (1);

The first image acquisition assembly (6) and the second image acquisition assembly (7) are respectively located at two sides of the light source assembly (5), the first image acquisition assembly (6) is provided with a first front end face, the second image acquisition assembly (7) is provided with a second front end face, the light source assembly (5) is provided with a third front end face, a first setting included angle is formed between the first front end face and the third front end face, a second setting included angle is formed between the second front end face and the third front end face, a first setting interval is formed between the center of the first front end face and the center of the third front end face, and a second setting interval is formed between the center of the second front end face and the center of the third front end face.

2. The contour sensor according to claim 1, characterized in that the first image acquisition component (6) and the second image acquisition component (7) are symmetrically arranged at two sides of the light source component (5), and the first set included angle and the second set included angle are the same in size, and the first set interval and the second set interval are the same in size.

3. The contour sensor according to claim 1 or 2, characterized in that the housing (1) comprises a bottom wall and a side wall arranged around the bottom wall, which side wall cooperates with the bottom wall to form a cavity, wherein the first image acquisition assembly (6), the second image acquisition assembly (7) and the light source assembly (5) are located in the cavity;

The bottom wall is provided with an assembling boss, the assembling boss is provided with an assembling surface, the flatness of the assembling surface is smaller than a set value, and the first image acquisition assembly (6), the second image acquisition assembly (7) and the light source assembly (5) are all installed on the assembling surface.

4. A contour sensor as defined in claim 3, characterized in that the mounting boss comprises a first boss (10) and two second bosses (11) located on both sides of the first boss (10), the mounting surface comprising a first mounting surface of the first boss (10) and a second mounting surface of the second boss (11), the light source assembly (5) being mounted to the first mounting surface, the first image acquisition assembly (6) being mounted to one of the second mounting surfaces, the second image acquisition assembly (7) being mounted to the other of the second mounting surfaces.

5. The contour sensor according to claim 4, characterized in that the first image acquisition assembly (6) and the second image acquisition assembly (7) each comprise a lens assembly (3) and a sensor assembly (4), the lens assembly (3) comprises a lens (31), the sensor assembly (4) comprises an image sensor (41), the image sensor (41) is arranged behind the lens (31) in the direction of acquiring the light signal, and the lens (31) is adapted to focus the reflected light to the image sensor (41).

6. The contour sensor according to claim 5, characterized in that the sensor assembly (4) further comprises a mounting plate (40), the image sensor (41) is fixed on the mounting plate (40), one of the mounting plate (40) and the corresponding second assembly surface is provided with a first positioning column (110), the other one is provided with a first positioning hole (400) matched with the first positioning column (110), the first positioning hole (400) is a slotted hole, the first positioning column (110) is arranged in the first positioning hole (400), and the mounting plate (40) is fixedly mounted on the second assembly surface through a fastener.

7. The profile sensor according to claim 5, wherein the lens assembly (3) further comprises a mounting block (30), the lens (31) is fixed to the mounting block (30), one of the mounting block (30) and the corresponding second mounting surface is provided with a second positioning post (111), the other one is provided with a second positioning hole (300) matched with the second positioning post (111), the second positioning post (111) is matched with the second positioning hole (300) to limit translation of the mounting block (30) relative to the second mounting surface, and the mounting block (30) is fixedly mounted on the second mounting surface through a fastener.

8. The contour sensor according to claim 7, characterized in that the second boss (11) is further provided with a positioning rim (112), the mounting block (30) is provided with a positioning end (301) adapted to the positioning rim (112) on its corresponding second boss (11), the positioning rim (112) cooperating with the positioning end (301) to limit rotation of the mounting block (30) relative to the second boss (11).

9. The profile sensor according to claim 4, wherein the light source assembly (5) comprises a mounting housing (50) and a laser (51) disposed within the mounting housing (50), one of the mounting housing (50) and the first boss (10) is provided with a third positioning post (100), the other is provided with a third positioning hole (500) adapted to the third positioning post (100), the third positioning post (100) cooperates with the third positioning hole (500) to limit translation of the mounting housing (50) relative to the first boss (10), and the mounting housing (50) is fixedly mounted to the first boss (10) by a fastener.

10. A contour sensor as defined in claim 3, further comprising a cover body (2), wherein a limit post (12) is formed at a top end of the side wall, the cover body (2) is provided with a limit notch (20) adapted to the limit post (12), the limit post (12) cooperates with the limit notch (20) to limit the cover body (2) from moving horizontally relative to the housing (1), and the cover body (2) is fixedly mounted to the side wall by a fastener.