A device and method for adjusting the angle of a galvanometer mirror based on a Hall element

Abstract

The application provides a Hall element-based swing mirror angle adjusting device and method, and relates to the technical field of optical-mechanical structures.The angle adjusting device comprises a mirror seat, a mirror, an electric rotary table, a reference unit, a sensor and a sensor support frame.The sensor is a Hall displacement sensor, the distance between the sensor and the reference unit is detected, so that the adjusting angle of the swing mirror is accurately controlled.The reference reference surface of the reference unit is parallel to the mirror, the reference reference surface is parallel to the detected surface, the detection end of the sensor is perpendicular to the detected surface of the reference unit, the detection is contactless during accurate adjustment, the environmental factors are resisted, there is no mechanical wear during long-term work, the cost of the sensor and the matching circuit is low, installation and debugging are simple, various scene angles can be flexibly adapted, and the problems of existing swing mirror angle control modes, such as installation difficulty, high cost, susceptibility to interference and mechanical wear, are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of optical-mechanical structure, and particularly relates to a mirror angle adjusting device and method based on a Hall element. BACKGROUND

[0002] In an optical system and a precision instrument, angle control of a large-aperture mirror is a key link, and the precision directly affects system performance. For example, astronomical observation, laser processing and other scenes all have clear needs for mirror angle control.

[0003] The existing large-aperture mirror angle control mode has obvious limitations. First, an encoder is used for control. Although the control mode based on the encoder has high precision, it is difficult to install and maintain in the later period when applied to a large-aperture mirror, and the cost of the encoder is also relatively high. Meanwhile, the encoder is susceptible to signal interference in a strong electromagnetic interference environment, and the adjustment process is easily affected. In addition, there is a control mode based on electrical limit. This mode is a contact type design, and the resolution is limited, which is difficult to adapt to diversified scenes. Moreover, mechanical wear occurs after long-term use, thereby causing precision to decrease. If used for a long time, frequent maintenance and replacement are required, which increases cost and affects work efficiency. SUMMARY

[0004] Therefore, the present application aims to overcome the defects in the prior art, and provides a mirror angle adjusting device and method based on a Hall element.

[0005] A mirror angle adjusting device based on a Hall element, comprising a mirror seat, a mirror and an electric turntable. The mirror is installed on the mirror seat, and the mirror seat is installed on a rotating end of the electric turntable. The adjusting device further comprises a reference unit, a sensor and a sensor support frame. The sensor is a Hall displacement sensor, and the sensor is installed on the sensor support frame. The reference unit is arranged on the mirror seat, and a reference surface of the reference unit is parallel to the mirror. A back surface of the reference surface is a detected surface of the reference unit, and the reference surface is parallel to the detected surface. A detection end of the sensor is perpendicular to the detected surface of the reference unit, and the sensor is signal-connected with the electric turntable.

[0006] Further, the reference unit is a limiting device, which comprises a limiting device mounting plate, a limiting device connecting rib and a reference plate which are fixedly connected in sequence. The limiting device mounting plate is perpendicular to the reference plate, and the limiting device mounting plate is connected with the mirror seat.

[0007] Further, the angle adjusting device further comprises a bottom plate and a sensor adjusting pad. The sensor support frame is installed on an upper surface of the sensor adjusting pad, the sensor adjusting pad is arranged on the bottom plate, and a cross section of the sensor support frame is in the shape of an I-beam.

[0008] Further, the angle adjusting device further comprises a sensor adjusting pad block, the sensor adjusting pad block is arranged on the sensor adjusting pad, the cross section of the sensor adjusting pad block is a sector, and the central angle of the sector cross section is 90 degrees.

[0009] Further, the angle adjusting device further comprises a sensor fixing frame, the sensor fixing frame is fixedly connected with the sensor and the sensor support frame.

[0010] Further, the cross section of the sensor fixing frame is a Chinese character type, the sensor fixing frame is further provided with adjusting waist holes, the adjusting waist holes are oppositely arranged on the sensor fixing frame, and the width of the adjusting waist holes is equal everywhere.

[0011] Further, the angle adjusting device further comprises a mirror seat adjusting pad, the mirror seat adjusting pad is arranged between the mirror seat and the electric turntable, and a plurality of mirror seat adjusting pad blocks are uniformly arranged on the mirror seat adjusting pad at intervals of degrees.

[0012] Further, the angle adjusting device further comprises a limiting device adjusting pad, the limiting device adjusting pad is arranged between the limiting device mounting plate and the mirror seat, and a plurality of limiting device adjusting pad blocks are arranged on the limiting device adjusting pad.

[0013] Further, the reference reference surface is a reference surface, and the reference surface is arranged on the reference plate.

[0014] The application further comprises a mirror angle adjusting method based on a Hall element, the method is realized based on any one of the mirror angle adjusting devices based on the Hall element, and the adjusting method comprises the following steps.

[0015] In step S1, the sensor detects and records the distance between the detection end and the detected surface of the reference unit.

[0016] In step S2, the sensor and the detection end are adjusted to the specified angle required by the mirror lens of the mirror, and the sensor is fixed.

[0017] In step S3, the sensor controls the electric turntable to rotate for angle adjustment, when the sensor detects that the distance between the detection end and the detected surface of the reference unit is equal to the value recorded in step S1, the sensor controls the electric turntable to stop rotating, and the mirror lens of the mirror is adjusted to the specified angle.

[0018] The technical scheme of the application has the following advantages:

[0019] The technical scheme provided by the application adopts a Hall displacement sensor, detects the distance from the reference unit, thereby achieving accurate control of the adjustment angle of the mirror lens, and through the parallel arrangement of the reference reference surface of the reference unit and the lens, the parallel arrangement of the reference reference surface and the detected surface, the vertical arrangement of the detection end of the sensor and the detected surface of the reference unit, the contactless detection is ensured while the accurate adjustment is ensured, the environmental factors such as light, dust and vibration are resisted, the mechanical wear is avoided in long-term work, the stability and reliability are high, the Hall displacement sensor and the matching circuit are low in cost, the installation and debugging are simple, and the complex calibration process is not needed, and the adjustment of various scene angles can be flexibly adapted. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the specific embodiments of the application or the technical scheme in the prior art, the drawings needed to be used in the specific embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0021] Figure 1 It is a schematic diagram of the overall structure of the application.

[0022] Figure 2 It is a schematic diagram of the sensor and the sensor fixing frame structure of the application.

[0023] Figure 3 It is a schematic diagram of the sensor and the sensor probe structure of the application.

[0024] Figure 4 It is a schematic diagram of the sensor adjusting pad and the sensor adjusting pad block structure of the application.

[0025] Figure 5 It is a schematic diagram of the limiting device adjusting pad and the limiting device adjusting pad block structure of the application.

[0026] Figure 6 It is a schematic diagram of the mirror seat adjusting pad and the mirror seat adjusting pad block structure of the application.

[0027] Figure 7 It is a schematic diagram of the structure of the sensor support frame of the application.

[0028] Figure 8 It is a schematic diagram of the structure of the reference plate and the limiting device mounting plate of the application.

[0029] Figure 9 It is a schematic diagram of the structure of the limiting device connecting rib and the reference surface of the application.

[0030] Figure 10 It is a schematic diagram of the structure of the sensor fixing frame and the adjusting waist hole of the application.

[0031] Figure 11 It is the top view of the sensor fixing frame structure of the application;

[0032] Figure 12 It is the schematic diagram of the adjustment process of the collimator of the application;

[0033] Figure 13 It is the schematic diagram of the mirror seat structure of the application.

[0034] Explanation of reference signs:

[0035] 1-mirror seat; 2-lens; 3-bottom plate; 4-sensor adjustment pad; 401-sensor adjustment pad block; 5-sensor support frame; 6-sensor; 601-sensor probe; 7-sensor fixing frame; 701-adjustment waist hole; 8-electric rotary table; 9-limiting device; 901-limiting device mounting plate; 902-limiting device connecting rib; 903-reference plate; 10-mirror seat adjustment pad; 1001-mirror seat adjustment pad block; 11-limiting device adjustment pad; 1101-limiting device adjustment pad block; 12-reference surface; 13-collimator. DETAILED DESCRIPTION

[0036] The technical solutions of the application will be described clearly and completely below in combination with the drawings. Obviously, the described embodiments are part of the embodiments of the application, rather than all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the application.

[0037] In the description of the application, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0038] In the description of the application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0039] Furthermore, the technical features involved in the different embodiments of the application described below can be combined with each other as long as there is no conflict.

[0040] As Figure 1 , Figure 2 , Figure 3 , Figure 7 and Figure 13 indicated, a Hall element-based swing mirror angle adjusting device includes a mirror seat 1, a mirror 2, and an electric rotary table 8. The mirror 2 is fixedly installed on the mirror seat 1, and a mounting plate is further arranged on the mirror seat 1, so that the side surface of the overall structure of the mirror seat 1 is L-shaped. The mounting plate is fixedly installed on the rotating end of the electric rotary table 8, so that the mirror seat 1 is fixedly installed on the rotating end of the electric rotary table 8. The electric rotary table 8 can drive the mirror seat 1 and the mirror 2 to rotate when working. The adjusting device further includes a reference unit, a sensor 6, and a sensor support frame 5. The sensor 6 is a Hall displacement sensor. Compared with other types of sensor structures, the Hall displacement sensor is more stable, has a long service life, has strong anti-pollution and corrosion ability, is convenient to install, and can more accurately lock the rotating angle of the mirror seat 1 and the mirror 2 compared with other parameter measurement methods. The sensor 6 is installed on the sensor support frame 5. The reference unit is arranged on the mounting plate of the mirror seat 1, and a reference surface of the reference unit is parallel to the mirror 2. The back surface of the reference surface is a detected surface of the reference unit, and the reference surface is parallel to the detected surface. The detection end of the sensor 6, i.e., a sensor probe 601 arranged on the sensor 6, is perpendicular to the position of the detected surface of the reference unit. The sensor 6 is signal-connected with the electric rotary table 8. The sensor 6 can control the electric rotary table 8 to work and rotate. Since this control method is prior art, it will not be described here. The reference unit, the sensor 6, and the sensor support frame 5 are arranged in pairs on both sides of the electric rotary table 8, so that the device can adjust the angle in two directions, left and right, increasing flexibility and application range. The electric rotary table 8 is prior art, which rotates through internal motor driving. Therefore, its structure and principle will not be described here.

[0041] The above-mentioned Hall element-based swing mirror angle adjusting device uses a Hall displacement sensor as the sensor 6. The distance between the sensor 6 and the reference unit is detected, so as to accurately control the adjustment angle of the swing mirror mirror 2. By arranging the reference surface of the reference unit to be parallel to the mirror 2, the reference surface to be parallel to the detected surface, and the detection end of the sensor 6 to be perpendicular to the position of the detected surface of the reference unit, the accurate adjustment can be ensured while ensuring non-contact detection, resisting environmental factors such as light, dust, and vibration, having no mechanical wear during long-term work, being high in stability and reliability, being low in cost of the Hall displacement sensor and the matching circuit, being simple to install and debug, and not needing a complex calibration process, and being able to flexibly adapt to the adjustment of angles in multiple scenes.

[0042] As Figure 1 , Figure 2 , Figure 3 , Figure 8 , Figure 9 and Figure 13 shown, in this embodiment, the reference unit is the limiting device 9, which includes a limiting device mounting plate 901, a limiting device connecting rib 902 and a reference plate 903 connected in sequence, and the positions of the limiting device mounting plate 901 and the reference plate 903 are perpendicular, and the limiting device mounting plate 901 is connected with the mirror seat 1; by setting the positions of the limiting device mounting plate 901 and the reference plate 903 perpendicular, it can be ensured that the limiting device 9 can be installed on the mirror seat 1 and can provide a reference as a reference, and by connecting the limiting device mounting plate 901 and the reference plate 903 through the limiting device connecting rib 902, the connecting strength between the limiting device mounting plate 901 and the reference plate 903 can be improved, and it can be ensured that there is no deviation between the limiting device mounting plate 901 and the reference plate 903 after long-term work, and the perpendicular relationship between the two is long-term guaranteed, and then the sensor probe 601 can accurately detect the distance between the sensor probe 601 and the reference plate 903, so as to realize accurate adjustment of the angle.

[0043] As Figure 1 , Figure 2 , Figure 4 and Figure 7 shown, in this embodiment, the angle adjusting device further includes a bottom plate 3 and a sensor adjusting pad 4, the sensor support frame 5 is installed on the upper surface of the sensor adjusting pad 4, the sensor adjusting pad 4 is arranged on the bottom plate 3, and the cross section of the sensor support frame 5 is in the shape of an I-beam; the bottom plate 3 is the bottom plane support of the entire device, which ensures the stability of the entire device, and the motorized turntable 8 is also installed on the bottom plate 3, the sensor adjusting pad 4 is arranged between the sensor support frame 5 and the bottom plate 3, and the sensor support frame 5 is supported, and the cross section of the sensor support frame 5 is designed in the shape of an I-beam, which is different from the ordinary cuboid structure. The I-beam structure is a symmetrical structure, which is more uniform in the stress process, effectively reduces deformation, and requires less material, which reduces the cost of material application and also helps the lightweight design of the device, and occupies a small space, which helps work in a limited space.

[0044] As Figure 2 , Figure 4 and Figure 7As shown, in the embodiment, the angle adjusting device further comprises a sensor adjusting pad 401, the sensor adjusting pad 401 is arranged on the sensor adjusting pad 4, the cross section of the sensor adjusting pad 401 is a sector, and the central angle of the sector cross section is 90 degrees; the sensor adjusting pad 401 is arranged at the four corners of the upper and lower surfaces of the sensor adjusting pad 4, and a total of eight sensor adjusting pads 401 are arranged, the height of the sensor support frame 5 can be adjusted by grinding the sensor adjusting pad 401, in addition, the grinding height of each sensor adjusting pad 401 can be controlled to be different, and then the pitch angle of the sensor support frame 5 is slightly adjusted to adapt to different working conditions and working environments, and the flexibility of the device is increased, and the 90-degree sector structure can uniformly distribute the stress to the whole structure, reduces the local stress concentration, and the sensor adjusting pad 401 is arranged at the four corners of the upper and lower surfaces of the sensor adjusting pad 4, the area of the pattern formed by the support points is maximum, the sensor support frame 5 can be stably supported to the maximum extent, and the stability of the whole structure is improved.

[0045] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 7 , Figure 8 , Figure 10 and Figure 11 , in the embodiment, the angle adjusting device further comprises a sensor fixing frame 7, the sensor fixing frame 7 is fixedly connected with the sensor 6 and the sensor support frame 5; the sensor fixing frame 7 is mainly used for fixing the sensor 6 on the top of the sensor support frame 5, so that the sensor probe 601 arranged on the sensor 6 can accurately measure the distance between the sensor 6 and the reference plate 903, so as to realize accurate adjustment of the angle, and the sensor fixing frame 7 is connected with the sensor support frame 5 through bolts, and the detachable connection form of the bolt connection is convenient for adjustment and replacement of the sensor 6 in the later period.

[0046] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 7 , Figure 10 and Figure 11As shown, in this embodiment, the sensor mounting bracket 7 has a U-shaped cross-section. The sensor mounting bracket 7 also has adjustment holes 701, which are positioned opposite each other on the sensor mounting bracket 7. The width of the adjustment holes 701 is equal at all points. The middle part of the U-shaped sensor mounting bracket 7 fits against the sensor 6, fixing the sensor 6 between the sensor mounting bracket 7 and the sensor support bracket 5. The two sides of the U-shaped sensor mounting bracket 7 are in contact with the sensor support bracket 5. The adjustment holes 701 are used to rotate the sensor 6, thereby adjusting the angle of the sensor 6 for precise positioning. Adjust the lens 2 of the swing mirror to the specified angle, and adjust the relative setting of the waist hole 701 so that when the U-shaped sensor bracket 7 rotates, both sides of the sensor bracket 7 can rotate accordingly. Then, both sides of the sensor bracket 7 can be connected to the sensor support frame 5 through the adjustment waist hole 701 and the bolt. The adjustment waist hole 701 is a closed shape formed by two arcs sharing the same center. Therefore, the width of the adjustment waist hole 701 is equal everywhere. This allows the adjustment waist hole 701 to better fit with the bolt, so that the sensor bracket 7 can be adjusted more conveniently and accurately.

[0047] like Figure 1 , Figure 2 , Figure 6 and Figure 13 As shown, in this embodiment, the angle adjustment device also includes a mirror base adjustment pad 10, which is disposed between the mirror base 1 and the electric turntable 8. Multiple mirror base adjustment pad blocks 1001 are evenly arranged on the mirror base adjustment pad 10 at 120-degree intervals. Mirror base adjustment pad blocks 1001 are provided on both the upper and lower surfaces of the mirror base adjustment pad 10. The aforementioned angular intervals can evenly distribute the pressure between the mirror base 1 and the limiting device 9, while providing stable support for the mirror base 1. By grinding the mirror base adjustment pad blocks 1001, the height of the mirror base 1 can be adjusted. Furthermore, by grinding different mirror base adjustment pad blocks 1001, the height of the mirror base adjustment pad blocks 1001 can be controlled to be different, thereby enabling minute adjustments to the pitch angle and achieving flexible adjustment.

[0048] like Figure 1 , Figure 2 , Figure 5 , Figure 6 , Figure 8 and Figure 13As shown, in the embodiment, the angle adjusting device further comprises a limiting device adjusting pad 11, which is arranged between the limiting device mounting plate 901 and the mirror seat 1, and a plurality of limiting device adjusting pad blocks 1101 are arranged on the limiting device adjusting pad 11; the upper and lower surfaces of the limiting device adjusting pad 11 are both provided with the limiting device adjusting pad blocks 1101, the limiting device adjusting pad 11 supports the limiting device mounting plate 901, and the three limiting device adjusting pad blocks 1101 are arranged as three vertices of a triangle, so that the three limiting device adjusting pad blocks 1101 form an equilateral triangle, and each limiting device adjusting pad block 1101 is arranged in parallel with each other. This arrangement can disperse the stress of the limiting device adjusting pad blocks 1101 and avoid stress concentration. By grinding the limiting device adjusting pad blocks 1101, the height of the limiting device mounting plate 901 can be adjusted, and by grinding limiting device adjusting pad blocks 1101 of different heights, different pitch angles can be adjusted. After the angle is adjusted, the limiting device mounting plate 901, the limiting device adjusting pad 11, the mounting plate on the mirror seat 1, the mirror seat adjusting pad 10 and the electric rotary table 8 are connected in sequence by bolts to realize fastening and fixation and prevent loosening during adjustment.

[0049] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 9 and Figure 12 , in the embodiment, the reference surface is a reference surface 12 arranged on a reference plate 903; the reference surface 12 is a finished surface, the light of the autocollimator 13 is vertically incident to the lens 2, and then the light is vertically returned to the field center of the autocollimator 13, that is, the optical axis of the autocollimator 13 is perpendicular to the plane where the lens 2 is located, and then the autocollimator 13 is moved in parallel, which is the same as the above step. By grinding the limiting device adjusting pad blocks 1101, the cross line of the autocollimator 13 is located at the field center of the autocollimator 13, and then the optical axis of the autocollimator 13 is perpendicular to the plane where the reference surface 12 is located, so that the reference surface 12 is parallel to the lens 2, and the next step of angle adjustment can be performed. Through the above correction, it can be ensured that when the angle of the lens 2 is adjusted, since the reference surface 12 is parallel to the detected surface, the angle of the lens 2 can be accurately adjusted by detecting the detected surface on the back of the reference surface 12 through the sensor 6.

[0050] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 9 , Figure 10 , Figure 11 ,Figure 12 and Figure 13 The present application also includes a method for adjusting the angle of a galvanometer mirror based on a Hall element, which is implemented by any of the above-mentioned devices for adjusting the angle of a galvanometer mirror based on a Hall element. The method comprises the following steps:

[0051] Step S1: The sensor 6 detects and records the distance between the detection end and the detected surface of the reference unit;

[0052] Step S2: The sensor 6 and the detection end are adjusted to the specified angle required for adjusting the mirror 2 of the galvanometer mirror, and the sensor 6 is fixed;

[0053] Step S3: The sensor 6 controls the electric rotary table 8 to rotate for angle adjustment. When the sensor 6 detects that the distance between the detection end and the detected surface of the reference unit is equal to the value recorded in step S1, the sensor 6 controls the electric rotary table 8 to stop rotating, and the mirror 2 of the galvanometer mirror is adjusted to the specified angle.

[0054] Specifically, first, the light axis of the autocollimator 13 is corrected to be perpendicular to the plane of the mirror 2 by vertically incident light to the mirror 2 and then vertically returning to the autocollimator 13, i.e., returning to the field center of the autocollimator 13. Then, the autocollimator 13 is parallelly moved, and the cross line of the autocollimator 13 is located at the field center of the autocollimator 13 by adjusting the pad 1101 of the limiting device. The light axis of the autocollimator 13 is again corrected to be perpendicular to the plane of the reference surface 12, so that the reference surface 12 is parallel to the mirror 2. Then, the angle adjustment is performed. The distance between the sensor probe 601 and the detected surface of the limiting device 9 is detected and recorded by the sensor 6, and the sensor 6 and the sensor probe 601 are adjusted to the specified angle required for adjusting the mirror 2 of the galvanometer mirror by adjusting the waist hole 701. At the same time, the sensor 6 is fixed by cooperating with the adjusting waist hole 701 through the bolt. Finally, the sensor 6 controls the electric rotary table 8 to drive the mirror seat 1 and the mirror 2 to rotate for angle adjustment. When the sensor 6 detects that the distance between the sensor probe 601 and the detected surface of the limiting device 9 is equal to the value recorded in the foregoing description, the sensor 6 controls the electric rotary table 8 to stop rotating, and the mirror 2 of the galvanometer mirror is adjusted to the specified angle.

[0055] Obviously, the above-mentioned embodiments are only examples for clear illustration, and are not limitations on the embodiments. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, all the embodiments do not need to be exhausted, and the obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. A Hall element-based mirror angle adjustment device, comprising: The mirror seat (1), the lens (2) and the motorized turntable (8), characterized in that the lens (2) is installed on the mirror seat (1), the mirror seat (1) is installed on the rotating end of the motorized turntable (8), the adjusting device further comprises a reference unit, a sensor (6) and a sensor support frame (5), the sensor (6) is a Hall displacement sensor, the sensor (6) is installed on the sensor support frame (5), the reference unit is arranged on the mirror seat (1), and a reference surface of the reference unit is parallel to the lens (2), a back surface of the reference surface is a detected surface of the reference unit, the reference surface is parallel to the detected surface, a detection end of the sensor (6) is perpendicular to the position of the detected surface of the reference unit, and the sensor (6) is signal-connected with the motorized turntable (8).

2. The device according to claim 1, wherein The reference unit is a limiting device (9), the limiting device (9) comprises a limiting device mounting plate (901), a limiting device connecting rib (902) and a reference plate (903) which are fixedly connected in sequence, and the limiting device mounting plate (901) is perpendicular to the position of the reference plate (903), and the limiting device mounting plate (901) is connected with the mirror seat (1).

3. The device according to claim 1, wherein The angle adjusting device further comprises a bottom plate (3) and a sensor adjusting pad (4), the sensor support frame (5) is installed on the upper surface of the sensor adjusting pad (4), the sensor adjusting pad (4) is arranged on the bottom plate (3), and the cross section of the sensor support frame (5) is in the shape of an I-beam.

4. The device according to claim 3, wherein the Hall element is a Hall sensor. The angle adjusting device further comprises a sensor adjusting pad block (401), the sensor adjusting pad block (401) is arranged on the sensor adjusting pad (4), the cross section of the sensor adjusting pad block (401) is in the shape of a sector, and the central angle of the sector cross section is 90 degrees.

5. The device according to claim 1, wherein The angle adjusting device further comprises a sensor fixing frame (7), the sensor fixing frame (7) is fixedly connected with the sensor (6) and the sensor support frame (5).

6. The device according to claim 5, wherein The cross section of the sensor fixing frame (7) is in the shape of a U, and an adjusting waist hole (701) is further formed in the sensor fixing frame (7), the adjusting waist hole (701) is oppositely arranged on the sensor fixing frame (7), and the width of the adjusting waist hole (701) is equal at different positions.

7. The device according to claim 1, wherein The angle adjusting device further comprises a mirror seat adjusting pad (10), the mirror seat adjusting pad (10) is arranged between the mirror seat (1) and the motorized turntable (8), and a plurality of mirror seat adjusting pad blocks (1001) are uniformly arranged on the mirror seat adjusting pad (10) at intervals of 120 degrees.

8. The device according to claim 2, wherein The angle adjusting device further comprises a limiting device adjusting pad (11), the limiting device adjusting pad (11) is arranged between the limiting device mounting plate (901) and the mirror seat (1), and a plurality of limiting device adjusting pad blocks (1101) are arranged on the limiting device adjusting pad (11).

9. The device according to claim 2, wherein The reference surface is a reference surface (12), and the reference surface (12) is arranged on the reference plate (903).

10. A method for adjusting the angle of a galvanometer mirror based on a Hall element, the method being implemented by the device for adjusting the angle of a galvanometer mirror based on a Hall element according to any one of claims 1 to 9, characterized in that, The adjusting method comprises the following steps: Step S1, the sensor (6) detects and records the distance between the detection end and the detected surface of the reference unit; Step S2, the sensor (6) and the detection end are adjusted to a specified angle required by the mirror lens (2), and the sensor (6) is fixed. Step S3, the sensor (6) controls the motorized turntable (8) to rotate for angle adjustment. When the sensor (6) detects that the distance between the detection end and the detected surface of the reference unit is equal to the value recorded in step S1, the sensor (6) controls the motorized turntable (8) to stop rotating, and the mirror lens (2) of the swing mirror is adjusted to the specified angle.

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