Tilt angle sensor based on optical lens

Abstract

The invention relates to the technical field of sensors, in particular to a tilt angle sensor based on an optical lens, which comprises a tilt angle sensor body, the upper end of the tilt angle sensor body is fixedly connected with an upper cap, the lower end of the tilt angle sensor body is fixedly connected with a lower cap, and the side wall of the tilt angle sensor body is fixedly connected with two mounting frames; the upper cover cap is connected with a circular ring through a mounting mechanism, and the upper end of the circular ring is fixedly connected with a lens. The reflection cup and the lens are arranged, the reflection cup can refract light rays irradiated on the reflection cup, then the light rays enter the lens, the light rays are collimated through emission of the side wall of the lens, and therefore the purposes of reducing the angle and improving the center light intensity are achieved, and meanwhile the inner surface of the reflection cup and the outer surface of the lens are diamond-shaped; according to the tilt angle sensor, more light rays refracted by the reflection cup can be refracted to the lens, so that the light rays are emitted in a collimation manner, the central light intensity is increased, and the detection precision and accuracy of the tilt angle sensor body are further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of sensors, and in particular to an optical lens-based tilt sensor. Background Art

[0002] Tilt sensors, also known as inclinometers, inclinometers, levels, and inclinometers, are often used to measure horizontal angle changes in a system.

[0003] At present, in order to improve the detection precision and accuracy of the inclination sensor, a photoelectric inclination sensor is usually used. The degree of reduction of its resistance is proportional to the intensity of light, that is, the stronger the light, the smaller the resistance, and the smaller the resistance, the smaller the voltage. In actual use, LED is generally used as the lighting source. However, during the use of LED lighting sources, it is often possible that the beam angle of the LED lighting source cannot be well controlled, affecting the precision and accuracy of the inclination sensor. In order to avoid the influence of glare on the LED lighting source on the inclination sensor, a light baffle or grille is added in front of the LED lighting source. However, this method often reduces the light output efficiency of the LED lighting source, further affecting the precision and accuracy of the inclination sensor. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems existing in the prior art and to propose an inclination sensor based on an optical lens.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: An optical lens-based tilt sensor, comprising: An inclination sensor body, wherein an upper cap is fixedly connected to the upper end of the inclination sensor body, a lower cap is fixedly connected to the lower end of the inclination sensor body, and two mounting brackets are fixedly connected to the side walls of the inclination sensor body; The upper cap is connected to a ring through a mounting mechanism, the upper end of the ring is fixedly connected to a lens, the upper end of the ring is fixedly connected to a reflective cup, the outer wall of the lens is in contact with the bottom side wall of the reflective cup, the inner surface of the reflective cup and the outer surface of the lens are both diamond-shaped, and the top of the lens is provided with a frosted layer; The mounting mechanism includes a circular groove formed at the upper end of the upper cover cap, a first annular groove formed on the outer wall of the circular ring, a second annular groove formed on the inner wall of the circular groove, a plurality of grooves formed on the top of the second annular groove, a plurality of inner walls of the grooves being slidably connected to sliders, and a plurality of side walls of the sliders being fixedly connected to a fixing plate fitted with the inner wall of the first annular groove.

[0006] Preferably, a rotating ring that can rotate is slidably connected to the bottom of the second annular groove, and a plurality of inclined grooves corresponding to the plurality of sliders are opened on the upper end of the rotating ring. The side walls of the plurality of sliders are rotatably connected to the first rod, and the side walls of the first rod are in contact with the inner walls of the corresponding inclined grooves.

[0007] Preferably, a third annular groove is provided on the inner wall of the circular groove above the fixed plate, and the inner wall of the third annular groove is sealingly and slidingly connected to two semicircular plates, and the inner walls of the two semicircular plates are both fitted with the outer wall of the circular ring. The inner wall of the third annular groove is rotatably connected to two lead screws corresponding to the two semicircular plates one by one, and the side walls of the lead screws are threadedly connected to the side walls of the corresponding semicircular plates.

[0008] Preferably, two second rods corresponding to the two lead screws are rotatably connected to the top of the second annular groove, the upper ends of the two second rods pass through the side wall of the upper cover cap and extend into the third annular groove, the side wall of the second rod located in the third annular groove is fixedly connected to the first bevel gear, and the side wall of the lead screw is fixedly connected to the second bevel gear meshing with the first bevel gear.

[0009] Preferably, the side walls of the two second rods located in the second annular groove are fixedly connected to gears, the side walls of the rotating ring are symmetrically fixedly connected to two arcuate tooth plates, and the gear side walls are engaged with the outer side walls of the adjacent arcuate tooth plates.

[0010] Preferably, an arcuate groove communicating with the side wall of the upper cap is formed on the inner wall of the second annular groove, a first T-shaped plate is slidably connected to the inner wall of the arcuate groove, and the side wall of the first T-shaped plate is fixedly connected to the outer wall of the rotating ring.

[0011] Preferably, the inner wall of the arc-shaped groove is fixedly connected to an arc-shaped rod, the side wall of the arc-shaped rod is slidingly connected to the side wall of the first T-shaped plate, the side wall of the arc-shaped rod is sleeved with a first spring, one end of the first spring is fixedly connected to the inner wall of the arc-shaped groove, and the other end of the first spring is fixedly connected to the side wall of the first T-shaped plate.

[0012] Preferably, the side walls on both sides of the first T-shaped plate are fixedly connected with telescopic curtains, and the side walls of the two telescopic curtains away from the first T-shaped plate are fixedly connected to the inner wall of the arc-shaped groove.

[0013] Preferably, the side wall of the upper cover cap is slidably connected to a second T-shaped plate, the lower end of the second T-shaped plate extends into the arc groove, the upper end of the first T-shaped plate is provided with a slot corresponding to the second T-shaped plate, and the upper end of the upper cover cap is elastically connected to the lower end of the second T-shaped plate through a plurality of second springs.

[0014] Preferably, two buffer capsules are fixedly connected to the upper end of the upper cover cap, the upper ends of the two buffer capsules are fixedly connected to the lower end of the second T-shaped plate, and non-Newtonian liquid is provided in the buffer capsules.

[0015] Compared with the existing technology, the advantages of the present invention are: 1. A reflector and a lens are provided. The reflector can refract the light incident on it and then enter the lens. The light emitted through the side wall of the lens is collimated, thereby achieving the purpose of reducing the angle and increasing the central light intensity. At the same time, the inner surface of the reflector and the outer surface of the lens are both diamond-shaped, which is conducive to more light refracted by the reflector to be refracted onto the lens, so that the light is collimated and emitted, thereby increasing the central light intensity, thereby increasing the detection precision and accuracy of the tilt sensor body, avoiding the phenomenon in the existing technology that the beam angle of the LED lighting source cannot be well controlled, affecting the precision and accuracy of the tilt sensor body.

[0016] 2. The frosted layer is lightly frosted and mainly serves to prevent glare. Although this part will increase the light throughput a little, it is not useful light and will not affect the detection precision and accuracy of the tilt sensor body. It avoids the existing technology of adding a light baffle or grille in front of the LED lighting source, which will reduce the light output efficiency of the LED lighting source and affect the precision and accuracy of the tilt sensor body.

[0017] 3. Set up the installation mechanism, rotate the first T-shaped plate in the forward direction, so that the side wall of the first T-shaped plate slides along the inner wall of the arc groove, which can drive the rotating ring to rotate in the forward direction. At this time, under the action of multiple inclined grooves, multiple fixed plates will be driven to approach each other through multiple first rods and multiple sliders, so that the side walls of multiple fixed plates are all in contact with the inner wall of the first annular groove, the position of the circular ring is fixed, and the installation of the inclination sensor body and the lens center axis is consistent. There is no need to use some screws for installation, which avoids the harsh use environment of the inclination sensor body, causing the screws to rust and the installation and disassembly to be cumbersome. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of an optical lens-based tilt sensor proposed in the present invention; Figure 2 for Figure 1 Schematic diagram of the top view structure; Figure 3 for Figure 1 A vertical cross-sectional structural diagram of ; Figure 4 for Figure 3 A schematic diagram of the structure at point A in the middle; Figure 5 for Figure 1 A schematic diagram of a top cross-sectional structure of the second annular groove; Figure 6 for Figure 5 A magnified schematic diagram of the structure at B in the middle; Figure 7 for Figure 1 A schematic diagram of a vertical cross-sectional structure at the second T-shaped plate in the middle; Figure 8 for Figure 7 A magnified schematic diagram of the structure at C in the middle; Figure 9 for Figure 1 Schematic diagram of the rear view structure.

[0019] In the figure: 1. inclination sensor body; 2. reflective cup; 3. lens; 4. frosted layer; 5. circular ring; 6. upper cover cap; 7. lower cover cap; 8. circular groove; 9. first annular groove; 10. second annular groove; 11. groove; 12. slider; 13. fixed plate; 14. rotating ring; 15. inclined groove; 16. first rod; 17. third annular groove; 18. semicircular plate; 19. lead screw; 20. second rod; 21. first bevel gear; 22. second bevel gear; 23. arcuate tooth plate; 24. gear; 25. arcuate groove; 26. first T-plate; 27. arcuate rod; 28. first spring; 29. ​​telescopic curtain; 30. second T-plate; 31. second spring; 32. slot; 33. buffer capsule; 34. mounting bracket. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] Reference Figure 1 - Figure 9 An optical lens-based inclination sensor includes an inclination sensor body 1, an upper cap 6 is fixedly connected to the upper end of the inclination sensor body 1, a lower cap 7 is fixedly connected to the lower end of the inclination sensor body 1, and two mounting brackets 34 (such as Figure 9 shown).

[0022] A circular ring 5 is connected to the upper cover cap 6 through a mounting mechanism, a lens 3 is fixedly connected to the upper end of the circular ring 5, a reflective cup 2 is fixedly connected to the upper end of the circular ring 5, the outer wall of the lens 3 is in contact with the bottom side wall of the reflective cup 2, the inner surface of the reflective cup 2 and the outer surface of the lens 3 are both diamond-shaped, and a frosted layer 4 is provided on the top of the lens 3.

[0023] It should be noted that the frosted layer 4 is lightly frosted and mainly plays an anti-glare role. Although this part will increase the light flux a little bit, it is not useful light and will not affect the detection precision and accuracy of the tilt sensor body 1. It avoids the existing technology of adding a light baffle or grille in front of the LED lighting source, which will reduce the light output efficiency of the LED lighting source and affect the precision and accuracy of the tilt sensor body 1.

[0024] A reflective cup 2 and a lens 3 are provided. The reflective cup 2 can refract the light incident on it and then enter the lens 3. The light emitted through the side wall of the lens 3 is collimated, thereby achieving the purpose of reducing the angle and improving the central light intensity. At the same time, the inner surface of the reflective cup 2 and the outer surface of the lens 3 are both diamond-shaped, which is conducive to more light refracted by the reflective cup 2 being refracted onto the lens 3, so that the light is collimated and emitted, thereby increasing the central light intensity, thereby increasing the detection precision and accuracy of the tilt sensor body 1, and avoiding the phenomenon in the prior art that the beam angle of the LED lighting source cannot be well controlled, which affects the precision and accuracy of the tilt sensor body 1.

[0025] The mounting mechanism includes a circular groove 8 opened at the upper end of the upper cover cap 6, a first annular groove 9 opened on the outer wall of the circular ring 5, a second annular groove 10 opened on the inner wall of the circular groove 8, a plurality of grooves 11 opened on the top of the second annular groove 10, the inner walls of the plurality of grooves 11 are all slidably connected to sliders 12, and the side walls of the plurality of sliders 12 are all fixedly connected to a fixing plate 13 that fits the inner wall of the first annular groove 9.

[0026] A rotating ring 14 that can rotate is slidably connected to the bottom of the second annular groove 10. The upper end of the rotating ring 14 is provided with multiple inclined grooves 15 that correspond one-to-one to the multiple sliders 12. The side walls of the multiple sliders 12 are rotatably connected to the first rod 16, and the side walls of the first rod 16 are in contact with the inner walls of the corresponding inclined grooves 15.

[0027] The inner wall of the second annular groove 10 is provided with an arc groove 25 connected to the side wall of the upper cover 6 . The inner wall of the arc groove 25 is slidably connected to a first T-shaped plate 26 . The side wall of the first T-shaped plate 26 is fixedly connected to the outer wall of the rotating ring 14 .

[0028] When installing between the inclination sensor body 1 and the lens 3, first place the ring 5 in the circular groove 8, then rotate the first T-shaped plate 26 in the forward direction, so that the side wall of the first T-shaped plate 26 slides along the inner wall of the arc groove 25, which can drive the rotating ring 14 to rotate in the forward direction. At this time, under the action of the multiple inclined grooves 15, the multiple fixed plates 13 are driven to approach each other through the multiple first rods 16 and the multiple sliders 12, so that the side walls of the multiple fixed plates 13 are all in contact with the inner wall of the first annular groove 9 (as shown in FIG. Figure 4 As shown), the position of the ring 5 is fixed, thereby completing the installation of the tilt sensor body 1 and the lens 3 with the central axis aligned, without using some screws for installation, avoiding the harsh operating environment of the tilt sensor body 1, causing the screws to rust and the installation and disassembly to be cumbersome.

[0029] A third annular groove 17 is provided on the inner wall of the circular groove 8 above the fixed plate 13. The inner wall of the third annular groove 17 is sealed and slidably connected to two semicircular plates 18. The inner walls of the two semicircular plates 18 are both in contact with the outer wall of the ring 5. The inner wall of the third annular groove 17 is rotatably connected to two lead screws 19 corresponding to the two semicircular plates 18 one by one. The side walls of the lead screws 19 are threadedly connected to the side walls of the corresponding semicircular plates 18.

[0030] Two second rods 20 corresponding to the two lead screws 19 are rotatably connected to the top of the second annular groove 10. The upper ends of the two second rods 20 pass through the side wall of the upper cover 6 and extend into the third annular groove 17. The side wall of the second rod 20 located in the third annular groove 17 is fixedly connected to the first bevel gear 21, and the side wall of the lead screw 19 is fixedly connected to the second bevel gear 22 which meshes with the first bevel gear 21.

[0031] The side walls of the two second rods 20 located in the second annular groove 10 are fixedly connected to gears 24 . The side walls of the rotating ring 14 are symmetrically fixedly connected to two arcuate tooth plates 23 . The side walls of the gears 24 mesh with the outer side walls of the adjacent arcuate tooth plates 23 .

[0032] When the rotating ring 14 rotates forward, the two arc-shaped toothed plates 23 can drive the two second rods 20 to rotate forward through the two gears 24, and drive the two lead screws 19 to rotate forward through the first bevel gear 21 and the second bevel gear 22, so that the two semicircular plates 18 approach each other, so that the inner walls of the two semicircular plates 18 are in contact with the outer wall of the circular ring 5 (it should be noted that the inner walls of the two semicircular plates 18 are provided with sealing gaskets), thereby sealing the gap between the circular ring 5 and the circular groove 8, and preventing impurities or rainwater from entering the installation area between the inclination sensor body 1 and the lens 3 during use of the inclination sensor body 1.

[0033] An arc-shaped rod 27 is fixedly connected to the inner wall of the arc-shaped groove 25, and the side wall of the arc-shaped rod 27 is slidably connected to the side wall of the first T-shaped plate 26. A first spring 28 is sleeved on the side wall of the arc-shaped rod 27, and one end of the first spring 28 is fixedly connected to the inner wall of the arc-shaped groove 25, and the other end of the first spring 28 is fixedly connected to the side wall of the first T-shaped plate 26.

[0034] The side wall of the upper cap 6 is slidably connected to a second T-shaped plate 30 (such as Figure 8 As shown), the lower end of the second T-shaped plate 30 extends into the arc-shaped groove 25, and the upper end of the first T-shaped plate 26 is provided with a slot 32 corresponding to the second T-shaped plate 30, and the upper end of the upper cover cap 6 is elastically connected to the lower end of the second T-shaped plate 30 through a plurality of second springs 31.

[0035] Before the first T-shaped plate 26 rotates forward, the second T-shaped plate 30 is pulled upward to move out of the arc groove 25. After the plurality of fixing plates 13 clamp the ring 5, the slot 32 on the first T-shaped plate 26 is aligned with the second T-shaped plate 30 (as shown in FIG. Figure 8As shown), the second T-shaped plate 30 is then loosened, and the second T-shaped plate 30 is inserted into the slot 32 under the action of multiple second springs 31, limiting the position of the first T-shaped plate 26 to ensure the stability of the installation between the inclination sensor body 1 and the lens 3.

[0036] Two buffer capsules 33 are fixedly connected to the upper end of the upper cap 6 . The upper ends of the two buffer capsules 33 are fixedly connected to the lower end of the second T-shaped plate 30 . Non-Newtonian liquid is provided in the buffer capsules 33 .

[0037] Non-Newtonian liquid is a fluid in which the relationship between shear stress and shear strain rate is not linear, and is a good buffer material. During the use of the inclination sensor body 1, when the second T-shaped plate 30 is subjected to a small upward force, the second T-shaped plate 30 moves slowly. Under the action of multiple second springs 31, the side wall of the second T-shaped plate 30 is still located in the slot 32, so that the installation between the inclination sensor body 1 and the lens 3 is stable. When the second T-shaped plate 30 is subjected to a large upward force, the elastic force of the multiple second springs 31 will be overcome. At this time, the non-Newtonian liquid in the buffer capsule 33 is subjected to a large force, and the non-Newtonian liquid is in a solid state, blocking the second T-shaped plate 30 from moving upward, thereby preventing the second T-shaped plate 30 from moving out of the slot 32, resulting in unstable installation between the inclination sensor body 1 and the lens 3.

[0038] The side walls of the first T-shaped plate 26 are fixedly connected to the telescopic curtain 29 (such as Figure 6 As shown), the side walls of the two retractable curtains 29 away from the first T-shaped plate 26 are fixedly connected to the inner wall of the arc groove 25 to prevent external impurities or rainwater from entering the installation area between the inclination sensor body 1 and the lens 3 through the arc groove 25.

[0039] During the use of the inclination sensor body 1, the ring 5 is first placed in the circular groove 8, and then the second T-shaped plate 30 is pulled upward to move out of the arc groove 25, and then the first T-shaped plate 26 is rotated forwardly so that the side wall of the first T-shaped plate 26 slides along the inner wall of the arc groove 25, which can drive the rotating ring 14 to rotate forwardly. At this time, under the action of the multiple inclined grooves 15, the multiple fixed plates 13 are driven to approach each other through the multiple first rods 16 and the multiple sliders 12, so that the side walls of the multiple fixed plates 13 are all in contact with the inner wall of the first annular groove 9 (as shown in FIG. Figure 4 As shown), the position of the ring 5 is fixed, thereby completing the installation of the tilt sensor body 1 and the lens 3 with the central axis aligned; After the plurality of fixing plates 13 clamp the ring 5, the slot 32 on the first T-shaped plate 26 is aligned with the second T-shaped plate 30 (eg, Figure 8 As shown), the second T-shaped plate 30 is then loosened, and the second T-shaped plate 30 is then inserted into the slot 32 under the action of the plurality of second springs 31, limiting the position of the first T-shaped plate 26 and ensuring the stability of the installation between the inclination sensor body 1 and the lens 3; When the rotating ring 14 rotates forward, the two arc-shaped toothed plates 23 can drive the two second rods 20 to rotate forward through the two gears 24, and drive the two lead screws 19 to rotate forward through the first bevel gear 21 and the second bevel gear 22, so that the two semicircular plates 18 approach each other, so that the inner side walls of the two semicircular plates 18 are in contact with the outer side wall of the circular ring 5 (it should be noted that the inner side walls of the two semicircular plates 18 are provided with sealing gaskets), thereby sealing the gap between the circular ring 5 and the circular groove 8, thereby preventing impurities or rainwater from entering the installation area between the inclination sensor body 1 and the lens 3 during use of the inclination sensor body 1; A reflective cup 2 and a lens 3 are provided. The reflective cup 2 can refract the light incident on it and then enter the lens 3. The light emitted through the side wall of the lens 3 is collimated, thereby achieving the purpose of reducing the angle and improving the central light intensity. At the same time, the inner surface of the reflective cup 2 and the outer surface of the lens 3 are both diamond-shaped, which is conducive to more light refracted by the reflective cup 2 being refracted onto the lens 3, so that the light is collimated and emitted, thereby increasing the central light intensity, thereby increasing the detection precision and accuracy of the tilt sensor body 1, and avoiding the phenomenon in the prior art that the beam angle of the LED lighting source cannot be well controlled, which affects the precision and accuracy of the tilt sensor body 1; The frosted layer 4 is lightly frosted and primarily serves to prevent glare. Although this increases light throughput slightly, it is not useful light and does not affect the detection precision and accuracy of the tilt sensor body 1. This avoids the conventional practice of adding a light baffle or grille in front of the LED lighting source, which would reduce the light output efficiency of the LED lighting source and affect the precision and accuracy of the tilt sensor body 1. During use of the inclination sensor body 1, when the second T-shaped plate 30 is subjected to a small upward force, the second T-shaped plate 30 moves slowly. Under the action of the multiple second springs 31, the side wall of the second T-shaped plate 30 is still located in the slot 32, so that the installation between the inclination sensor body 1 and the lens 3 is stable. When the second T-shaped plate 30 is subjected to a large upward force, the elastic force of the multiple second springs 31 will be overcome. At this time, the non-Newtonian liquid in the buffer capsule 33 is subjected to a large force, and the non-Newtonian liquid becomes solid, blocking the second T-shaped plate 30 from moving upward, thereby preventing the second T-shaped plate 30 from moving out of the slot 32, resulting in unstable installation between the inclination sensor body 1 and the lens 3.

[0040] The above are only preferred specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An optical lens-based tilt sensor, characterized in that: include: An inclination sensor body (1), wherein an upper cap (6) is fixedly connected to the upper end of the inclination sensor body (1), a lower cap (7) is fixedly connected to the lower end of the inclination sensor body (1), and two mounting brackets (34) are fixedly connected to the side walls of the inclination sensor body (1); The upper cap (6) is connected to a circular ring (5) via a mounting mechanism, the upper end of the circular ring (5) is fixedly connected to a lens (3), the upper end of the circular ring (5) is fixedly connected to a reflective cup (2), the outer side wall of the lens (3) is in contact with the bottom side wall of the reflective cup (2), the inner surface of the reflective cup (2) and the outer surface of the lens (3) are both rhombus-shaped, and the top of the lens (3) is provided with a frosted layer (4); The mounting mechanism comprises a circular groove (8) provided at the upper end of the upper cover cap (6), a first annular groove (9) provided on the outer side wall of the circular ring (5), a second annular groove (10) provided on the inner side wall of the circular groove (8), a plurality of grooves (11) provided on the top of the second annular groove (10), the inner walls of the plurality of grooves (11) are all slidably connected to sliders (12), and the side walls of the plurality of sliders (12) are all fixedly connected to fixing plates (13) that are in contact with the inner wall of the first annular groove (9).

2. The optical lens-based tilt sensor according to claim 1, characterized in that: A rotating ring (14) capable of self-rotation is slidably connected to the bottom of the second annular groove (10), and a plurality of inclined grooves (15) corresponding to the plurality of sliders (12) are provided on the upper end of the rotating ring (14). The side walls of the plurality of sliders (12) are all rotatably connected to a first rod (16), and the side walls of the first rod (16) are in contact with the inner walls of the corresponding inclined grooves (15).

3. The optical lens-based tilt sensor according to claim 2, characterized in that: The inner wall of the circular groove (8) above the fixed plate (13) is provided with a third annular groove (17), and the inner wall of the third annular groove (17) is sealingly and slidingly connected to two semicircular plates (18), and the inner side walls of the two semicircular plates (18) are both in contact with the outer side wall of the ring (5). The inner wall of the third annular groove (17) is rotatably connected to two lead screws (19) corresponding to the two semicircular plates (18), and the side walls of the lead screws (19) are threadedly connected to the side walls of the corresponding semicircular plates (18).

4. The optical lens-based tilt sensor according to claim 3, characterized in that: Two second rods (20) corresponding to the two lead screws (19) are rotatably connected to the top of the second annular groove (10). The upper ends of the two second rods (20) pass through the side wall of the upper cover (6) and extend into the third annular groove (17). The side wall of the second rod (20) located in the third annular groove (17) is fixedly connected to the first bevel gear (21). The side wall of the lead screw (19) is fixedly connected to the second bevel gear (22) meshing with the first bevel gear (21).

5. The optical lens-based tilt sensor according to claim 4, characterized in that: The side walls of the two second rods (20) located in the second annular groove (10) are both fixedly connected to gears (24), and the side walls of the rotating ring (14) are symmetrically fixedly connected to two arcuate tooth plates (23), and the side walls of the gears (24) are meshed with the side walls of the arcuate tooth plates (23) adjacent thereto.

6. The optical lens-based tilt sensor according to claim 1, characterized in that: The inner wall of the second annular groove (10) is provided with an arc-shaped groove (25) communicating with the side wall of the upper cover cap (6). The inner wall of the arc-shaped groove (25) is slidably connected to a first T-shaped plate (26). The side wall of the first T-shaped plate (26) is fixedly connected to the outer wall of the rotating ring (14).

7. The optical lens-based tilt sensor according to claim 6, characterized in that: The inner wall of the arc-shaped groove (25) is fixedly connected to an arc-shaped rod (27), and the side wall of the arc-shaped rod (27) is slidably connected to the side wall of the first T-shaped plate (26). The side wall of the arc-shaped rod (27) is sleeved with a first spring (28), one end of the first spring (28) is fixedly connected to the inner wall of the arc-shaped groove (25), and the other end of the first spring (28) is fixedly connected to the side wall of the first T-shaped plate (26).

8. The optical lens-based tilt sensor according to claim 6, characterized in that: The side walls on both sides of the first T-shaped plate (26) are fixedly connected to telescopic curtains (29), and the side walls of the two telescopic curtains (29) away from the first T-shaped plate (26) are fixedly connected to the inner wall of the arc-shaped groove (25).

9. The optical lens-based tilt sensor according to claim 6, characterized in that: The side wall of the upper cover cap (6) is slidably connected to a second T-shaped plate (30), the lower end of the second T-shaped plate (30) extends into the arc groove (25), the upper end of the first T-shaped plate (26) is provided with a slot (32) corresponding to the second T-shaped plate (30), and the upper end of the upper cover cap (6) is elastically connected to the lower end of the second T-shaped plate (30) via a plurality of second springs (31).

10. The optical lens-based tilt sensor according to claim 9, characterized in that: Two buffer capsules (33) are fixedly connected to the upper end of the upper cover cap (6), and the upper ends of the two buffer capsules (33) are fixedly connected to the lower end of the second T-shaped plate (30). Non-Newtonian liquid is provided in the buffer capsules (33).

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