A diversified tilt angle monitoring device based on fiber grating strain

Abstract

A kind of diversified inclination monitoring device based on fiber grating strain, including adsorption component, strain monitoring component and light measuring component, strain monitoring component includes the shell with one end opening, monitoring disc is set on the inner side wall of shell, counterweight is slidably arranged on monitoring disc, thin wire connecting counterweight and adsorption component and fiber grating sensor being set on thin wire, shell open end is set on adsorption component;Light measuring component includes fan-shaped light measuring seat and luminosity measuring instrument, light measuring seat includes circular arc plate, two straight flat plates with common first side and being arranged at the both ends of circular arc plate, oppositely arranged light-emitting plate and light shielding plate, light shielding plate is rotatably arranged on first side, light-emitting plate is provided with lamp plate, light shielding plate is provided with photosensitive wall connected with luminosity measuring instrument, one of straight flat plates is arranged on the outer side wall of shell on the side of counterweight rotation direction.The present application has high measurement precision, and can be used to accurately measure and calculate horizontal inclination in dynamic change state.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of inclination monitoring, and particularly relates to a diversified inclination monitoring device based on fiber grating strain. BACKGROUND

[0002] At present, when measuring inclination, most industries still use traditional bubble levels. The detection method has many shortcomings, such as low measurement accuracy, relatively single function, small measurement angle range, etc.

[0003] The traditional level cannot meet the engineering requirements in the occasion of dynamic angle change and high-precision measurement. For example, in the field of automatic control and engineering design which needs to dynamically control the object, the traditional level cannot automatically and dynamically track and measure the horizontal inclination, which makes the feedback link in the automatic control unable to be achieved, and the system fast leveling function cannot be realized. When the object needs to be measured quickly and accurately, the response delay of the traditional level limits the function required. In order to adapt to the industrial development and meet the engineering needs, it is of great significance to research new inclination sensors or inclination measuring devices. SUMMARY

[0004] The purpose of the present application is to provide a diversified inclination monitoring device based on fiber grating strain, which has high measurement accuracy and can be used to accurately measure the horizontal inclination in a dynamic state, is very convenient to carry and use, and solves the problems of low accuracy and inconvenience of use of the existing inclination measuring device.

[0005] The present application is realized by the following technical solutions:

[0006] A diversified inclination monitoring device based on fiber grating strain, comprising:

[0007] An adsorption assembly for being adsorbed to a to-be-pasted surface to form a vacuum cavity;

[0008] A strain monitoring assembly, the strain monitoring assembly comprising a shell, a monitoring disc, a counterweight, a fine wire and a fiber grating sensor, one end of the shell being open, the shell having the open end arranged on the adsorption assembly, the monitoring disc being arranged on the inner side wall of the shell, the counterweight being slidingly arranged on the monitoring disc and being able to slide circumferentially along the monitoring disc, one end of the fine wire being connected to the center of the bottom of the counterweight and the other end being connected to the adsorption assembly, the direction of the fine wire being perpendicular to the adsorption assembly, and the fiber grating sensor being arranged on the fine wire;

[0009] The light measurement assembly comprises a light measurement seat and a photometric instrument, the light measurement seat is a fan-shaped structure, the light measurement seat comprises a circular arc plate, two straight plates with a common first side and arranged at two ends of the circular arc plate respectively, a light-emitting plate connected with the circular arc plate and the two straight plates respectively, and a light shielding plate arranged in a spaced manner with the light-emitting plate and rotatably arranged on the first side, the light-emitting plate is provided with a lamp plate on a side facing the light shielding plate, the light shielding plate is provided with a photosensitive wall on a side facing the light-emitting plate, the photosensitive wall is connected with the photometric instrument, and one of the two straight plates is arranged on the outer side wall of the shell on the side of the counterweight rotating direction.

[0010] Further, the strain monitoring assembly further comprises a monitoring column, an infrared emitter and an infrared receiver, the infrared emitter and the infrared receiver are annular, the infrared emitter is arranged on the monitoring disc, the infrared receiver is arranged on the inner side wall of the shell opposite to the infrared emitter, the monitoring column is located between the infrared emitter and the infrared receiver and is arranged on the counterweight.

[0011] Further, an arc-shaped sliding groove is formed on the monitoring disc, an arc-shaped sliding channel is formed on the monitoring disc at a position between the outer side wall and the arc-shaped outer wall of the sliding groove, the counterweight is in a circular arc structure, an arc-shaped groove is formed on the counterweight and penetrates through two ends of the counterweight, and the counterweight is sleeved on the arc-shaped sliding channel through the arc-shaped groove.

[0012] Further, the infrared emitter is arranged on the monitoring disc at a position between the sliding grooves, the monitoring column is in an L-shaped structure and comprises a horizontal part and a vertical part, the horizontal part is arranged on one side of the counterweight, and the vertical part is located between the infrared emitter and the infrared receiver.

[0013] Further, the arc-shaped sliding channel and the contact surface between the arc-shaped groove are smooth.

[0014] Further, the adsorption assembly comprises a base and a micro air pump, a cavity groove is formed on the bottom of the base, a soft rubber ring pad is arranged on the bottom of the base at a position outside the cavity groove, a wind hole is formed on the outer side wall of the base and communicates with the cavity groove, and the micro air pump communicates with the wind hole.

[0015] Further, the base is in a circular table structure with a large bottom and a small top, and the cavity groove is in a circular table structure with a small groove bottom and a large groove opening.

[0016] Further, a single-chip microcomputer and a power box are arranged on the outer side wall of the shell, and the single-chip microcomputer is connected with the power box and the fiber bragg grating sensor respectively.

[0017] Further, the strain monitoring assembly further comprises a shaft, both ends of the shaft are arranged on the opposite two inner side walls of the shell, and the monitoring disc is fixedly sleeved on the shaft.

[0018] Compared with the prior art, the beneficial effects of the present application are that the shell is fixed on the table top through the adsorption assembly, as the table top is continuously tilted, the counterweight is affected by gravity and slides along the circumference of the monitoring disc, thereby stretching the fine wire and the fiber grating sensor, the fiber grating sensor can sensitively perceive the tension it bears, and the angle value of the tilt angle can be calculated through simple calculation; at the same time, the counterweight slides to drive the monitoring column to slide, and when the table top is tilted, the light shield rotates under the action of gravity, the light shield is partially rotated to the outside of the straight plate, at this time, the photosensitive area of the photosensitive wall is reduced, and the photosensitive area is monitored by the photometric instrument to monitor the tilt angle of the light shield, thereby obtaining the tilt angle of the table top, ensuring the accuracy of the tilt angle monitoring, and using the adsorption assembly, the shell can be fixed on the table top, avoiding the influence of the tilt sliding of the table top on the tilt angle monitoring precision; the diversified tilt angle monitoring device based on the fiber grating strain of the present application has the advantages of simple structure, easy operation, high measurement precision, convenient carrying and use, and to a certain extent, the efficiency of the measurement work is improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structural schematic view of the diversified tilt angle monitoring device based on the fiber grating strain of the present application.

[0020] Figure 2 It is an internal structure schematic view of the connection between the strain monitoring assembly and the adsorption assembly in the diversified tilt angle monitoring device based on the fiber grating strain of the present application.

[0021] Figure 3 It is a structural schematic view of the adsorption assembly in the diversified tilt angle monitoring device based on the fiber grating strain of the present application.

[0022] Figure 4 It is a structural schematic view of the monitoring disc in the diversified tilt angle monitoring device based on the fiber grating strain of the present application.

[0023] Figure 5 It is a structural schematic view of the counterweight in the diversified tilt angle monitoring device based on the fiber grating strain of the present application.

[0024] Figure 6 It is a structural schematic view of the light measurement assembly in the diversified tilt angle monitoring device based on the fiber grating strain of the present application.

[0025] Figure 7 It is a structural schematic view of the light shield in the diversified tilt angle monitoring device based on the fiber grating strain of the present application.

[0026] In the figure, 1 - adsorption assembly, 11 - base, 111 - cavity groove, 112 - air hole, 12 - micro air pump, 13 - soft rubber ring pad, 2 - strain monitoring assembly, 21 - shell, 22 - monitoring disc, 221 - sliding groove, 222 - arc-shaped sliding channel, 23 - counterweight, 231 - arc groove, 24 - thin wire, 25 - fiber Bragg grating sensor, 26 - monitoring column, 261 - horizontal part, 262 - vertical part, 27 - infrared emitter, 28 - shaft, 3 - light measurement assembly, 31 - circular arc plate, 32 - straight flat plate, 33 - light-emitting plate, 34 - light-shielding plate, 35 - light-sensitive wall. DETAILED DESCRIPTION

[0027] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative labor are within the scope of protection of the present application.

[0029] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. Meanwhile, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0030] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. Meanwhile, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0031] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the product of the present application is used, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0032] Please refer to Figure 1 , Figure 1 The structure diagram of the diversified inclination monitoring device based on fiber grating strain of the present application. A diversified inclination monitoring device based on fiber grating strain, comprising an adsorption assembly 1, a strain monitoring assembly 2 and a light measuring assembly 3, adsorbed on the table top through the adsorption assembly 1, and the inclination of the table top is measured through the strain monitoring assembly 2 and the light measuring assembly 3.

[0033] Please refer to Figure 2 and Figure 3 , Figure 2 The internal structure diagram of the connection between the strain monitoring assembly and the adsorption assembly in the diversified inclination monitoring device based on fiber grating strain of the present application, Figure 3 The structure diagram of the adsorption assembly in the diversified inclination monitoring device based on fiber grating strain of the present application. Specifically, the adsorption assembly 1 is used to adsorb the surface to be fitted to form a vacuum cavity, so as to be fixed on the surface to be fitted. In an embodiment, the adsorption assembly 1 comprises a base 11 and a micro air pump 12, the bottom of the base 11 is provided with a cavity groove 111, the bottom of the base 11 is provided with a soft rubber ring pad 13 at a position outside the cavity groove 111, a wind hole 112 communicating with the cavity groove 111 is formed on the outer side wall of the base 11, and the micro air pump 12 communicates with the wind hole 112. The micro air pump 12 is used to extract the gas in the cavity groove 111 to form a vacuum cavity in the cavity groove 111, so as to press the base 11 tightly on the table top by using the atmospheric pressure to realize fixation, and the soft rubber ring pad 13 is arranged on the base 11 to make the base 11 fit the table top more closely and increase the sealing property between the base 11 and the table top. In order to increase the stress area of the base 11, in an embodiment, the base 11 is a circular table structure with a large bottom and a small top, and the cavity groove 111 is a circular table structure with a small groove bottom and a large groove opening. This setting enables the atmospheric pressure to fix the base 11 more stably on the table top.

[0034] The strain monitoring assembly 2 comprises a shell 21, a monitoring disc 22, a counterweight 23, a fine wire 24 and a fiber grating sensor 25, the shell 21 is open at one end, the shell 21 is arranged on the adsorption assembly 1 with the open end, the monitoring disc 22 is arranged on the inner side wall of the shell 21, the counterweight 23 is slidingly arranged on the monitoring disc 22 and can slide circumferentially along the monitoring disc 22, one end of the fine wire 24 is connected with the bottom center of the counterweight 23, the other end is connected with the adsorption assembly 1, the direction of the fine wire 24 is perpendicular to the adsorption assembly 1, and the fiber grating sensor 25 is arranged on the fine wire 24. When the strain monitoring assembly 2 is fixed on the table surface with the inclination angle to be monitored through the adsorption assembly 1, when the table surface is inclined, the counterweight 23 slides circumferentially along the monitoring disc 22 on the monitoring disc 22 under the influence of gravity, so as to stretch the fine wire 24 between the counterweight 23 and the adsorption assembly 1, and then stretch the fiber grating sensor 25 on the fine wire 24, at this time, the fiber grating sensor 25 can sensitively sense the tension, so as to calculate the value of the inclination angle.

[0035] Please refer to Figure 4 and Figure 5 , Figure 4 It is a structural schematic view of the monitoring disc in the diversified inclination angle monitoring device based on the fiber grating strain of the application, Figure 5The structure diagram of the counterweight in the diversified tilt angle monitoring device based on fiber grating strain of the application. In an embodiment, the strain monitoring assembly 2 further comprises a monitoring column 26, an infrared emitter 27 and an infrared receiver, the infrared emitter 27 and the infrared receiver are both annular, the infrared emitter 27 is arranged on the monitoring disc 22, the infrared receiver is arranged on the inner side wall of the shell 21 opposite to the infrared emitter 27, the monitoring column 26 is located between the infrared emitter 27 and the infrared receiver and is arranged on the counterweight 23. The annular infrared emitter 27 is used to emit annular infrared rays, the monitoring column 26 is in a vertical state when the table top is horizontal, which is equivalent to being located at a 0-degree position, when the table top is slightly tilted, for example, the tilt angle of the table top is less than thirty degrees, the thin wire 24 can be stretched by a certain length, the counterweight 23 can slide to the corresponding position along the circumferential direction of the monitoring disc 22 under the stretching of the thin wire 24, the monitoring column 26 moves to the corresponding position along with the counterweight 23, and since the monitoring column 26 is located between the infrared emitter 27 and the infrared receiver, the monitoring column 26 blocks a part of the infrared rays, so that the annular infrared receiver cannot receive the blocked infrared rays, therefore, the position of the monitoring column 26 where the light source is lost on the infrared receiver is determined, the rotation amplitude of the monitoring column 26 is determined according to the position of the monitoring column 26 where the light source is lost on the infrared receiver, so as to obtain the tilt angle of the table top, and the tilt angle measured by the fiber grating sensor 25 is confirmed through the tilt angle of the table top, so as to ensure the accuracy of the tilt angle monitoring. Or the tilt angle of the table top measured by the infrared receiver and the tilt angle of the table top measured by the fiber grating sensor 25 are averaged, and finally the tilt angle of the table top is obtained, so as to achieve the effect of accurately monitoring the tilt angle of the table top. In an embodiment, the infrared emitter 27 is arranged on the monitoring disc 22 and located between the sliding grooves 221, the monitoring column 26 is in an L-shaped structure and comprises a horizontal part 261 and a vertical part 262, the horizontal part 261 is arranged on one side of the counterweight 23, and the vertical part 262 is located between the infrared emitter 27 and the infrared receiver. The vertical part 262 of the monitoring column 26 is located between the bottom of the annular infrared emitter 27 and the bottom of the annular infrared receiver, so as to determine the tilt angle of the table top through the movement amplitude of the monitoring column 26.

[0036] In an embodiment, the monitoring disc 22 is provided with an arc-shaped sliding groove 221, and an arc-shaped sliding channel 222 is formed between the outer sidewall of the monitoring disc 22 and the arc-shaped outer wall of the sliding groove 221. The counterweight 23 is in an arc-shaped structure, and the counterweight 23 is provided with an arc-shaped groove 231 penetrating through both ends of the counterweight 23. The counterweight 23 is sleeved on the arc-shaped sliding channel 222 through the arc-shaped groove 231. The top of the counterweight 23 is arranged in the sliding groove 221, and the counterweight 23 is movably suspended on the arc-shaped sliding channel 222. When the table top is tilted, the counterweight 23 slides along the arc-shaped sliding channel 222, so as to realize the circumferential sliding of the counterweight 23 along the monitoring disc 22. The arc of the sliding groove 221 can be 270 degrees, and the arc of the counterweight 23 can be 30 degrees. In order to reduce the friction between the arc-shaped sliding channel 222 and the counterweight 23, the contact surface between the arc-shaped sliding channel 222 and the arc-shaped groove 231 is provided with a smooth surface. In order to facilitate the installation of the monitoring disc 22, the strain monitoring assembly 2 further comprises a shaft 28, both ends of the shaft 28 are arranged on the opposite inner sidewalls of the shell 21, and the monitoring disc 22 is fixedly sleeved on the shaft 28.

[0037] Please refer to Figure 6 and Figure 7 , Figure 6 the structure diagram of the optical measurement assembly in the diversified inclination angle monitoring device based on the fiber grating strain of the application, Figure 7The application discloses a diversified inclination monitoring device based on fiber grating strain, and relates to the technical field of inclination monitoring devices. The light measurement assembly 3 comprises a light measurement seat and a light measurement instrument, the light measurement seat is in a fan shape, the light measurement seat comprises a circular arc plate 31, two straight plates 32 which are provided at two ends of the circular arc plate 31 and have a common first side, a light-emitting plate 33 which is connected with the circular arc plate 31 and the two straight plates 32, and a light-shielding plate 34 which is provided in a spaced manner with the light-emitting plate 33 and is rotatably arranged on the first side, a lamp plate is arranged on one side of the light-emitting plate 33 which faces the light-shielding plate 34, a photosensitive wall 35 is arranged on one side of the light-shielding plate 34 which faces the light-emitting plate 33, the photosensitive wall 35 is connected with the light measurement instrument, and one of the two straight plates 32 is arranged on an outer side wall of the shell 21 which is located on one side of the shell 21 in the rotating direction of the counterweight 23. One of the two straight plates 32 is arranged on an outer side wall of the shell 21 which is not connected with the shaft 28, the lamp plate on the light-emitting plate 33 can emit light rays to the light-shielding plate 34, the photosensitive wall 35 on the light-shielding plate 34 can monitor the light rays emitted by the lamp plate on the light-emitting plate 33, when the table top is inclined, the light-shielding plate 34 rotates under the action of gravity, the light-shielding plate 34 rotates to the outside of the straight plate 32, at this time, the photosensitive area of the photosensitive wall 35 is reduced, the light measurement instrument is used for monitoring the photosensitive area correspondingly, so as to monitor the inclination angle of the light-shielding plate 34, thereby obtaining the inclination angle of the table top, the light measurement assembly 3 is matched with the strain monitoring assembly 2, the triple monitoring arrangement can be realized, and the inclination angle monitoring accuracy can be maximized. Further, when the table top is greatly inclined, for example, the inclination angle of the table top is greater than or equal to thirty degrees, the light measurement assembly 3 is mainly used for monitoring, the inclination angle monitored by the light measurement assembly 3 is confirmed by the inclination angle monitored by the fiber grating sensor 25, and the inclination angle monitoring accuracy is ensured.

[0038] In an embodiment, a single-chip microcomputer and a power supply box are arranged on the outer side wall of the shell 21, and the single-chip microcomputer is connected with the power supply box and the fiber grating sensor 25 respectively. The power supply box can supply power for the single-chip microcomputer, the strain monitoring assembly 2 and the light measurement assembly 3, the practicability of the diversified inclination monitoring device based on fiber grating strain can be improved, the diversified inclination monitoring device based on fiber grating strain is more portable and can be moved at will, a display and an adjusting button are arranged on the single-chip microcomputer, the measurement result of the diversified inclination monitoring device based on fiber grating strain can be presented in real time, and the operation of the diversified inclination monitoring device based on fiber grating strain is more convenient.

[0039] Compared with the prior art, the beneficial effects of the present application are that the shell 21 is fixed on the table top by the adsorption assembly 1, as the table top is continuously tilted, the counterweight 23 is affected by gravity and slides along the circumference of the monitoring disc 22, thereby stretching the fine wire 24 and the fiber grating sensor 25, the fiber grating sensor 25 can sensitively perceive the tension it bears, and the angle value of the tilt angle can be calculated by simple calculation; at the same time, the sliding of the counterweight 23 drives the monitoring column 26 to slide, and when the table top is tilted, the light shield 34 rotates under the action of gravity, and the light shield 34 is partially rotated to the outside of the straight plate 32, at this time, the light sensing area of the light sensing wall 35 is reduced, and the light sensing area is monitored by the photometer to monitor the tilt angle of the light shield 34, thereby obtaining the tilt angle of the table top, ensuring the accuracy of the tilt angle monitoring, and using the adsorption assembly 1, the shell 21 can be fixed on the table top, avoiding the influence of the tilt sliding of the table top on the tilt angle monitoring precision; the diversified tilt angle monitoring device based on the fiber grating strain of the present application has the advantages of simple structure, easy operation, high measurement precision, convenient carrying and use, and to a certain extent, improves the efficiency of the measurement work.

[0040] The above is only a preferred embodiment of the present application, and does not limit the present application in any form, so any simple modification, equivalent change and modification of the above embodiment without departing from the technical solution of the present application, according to the technical essence of the present application, all still belong to the scope of the technical solution of the present application.

Claims

1. A diversified tilt angle monitoring device based on fiber optic grating strain, characterized in that, include: An adsorption assembly used to adsorb onto the surfaces to be bonded to form a vacuum cavity; A strain monitoring component includes a housing, a monitoring disk, a counterweight, a thin wire, and a fiber Bragg grating sensor. One end of the housing has an opening, which is mounted on an adsorption component. The monitoring disk is mounted on the inner wall of the housing. The counterweight is slidably mounted on the monitoring disk and can slide circumferentially along the monitoring disk. One end of the thin wire is connected to the center of the bottom of the counterweight, and the other end is connected to the adsorption component. The direction of the thin wire is perpendicular to the adsorption component. The fiber Bragg grating sensor is mounted on the thin wire. The strain monitoring component also includes a monitoring column, an infrared emitter, and an infrared receiver. Both the infrared emitter and the infrared receiver are annular. The infrared emitter is mounted on the monitoring disk, and the infrared receiver is mounted on the inner wall of the housing opposite to the infrared emitter. The monitoring column is located between the infrared emitter and the infrared receiver and is mounted on the counterweight. The optical measurement assembly includes an optical measurement base and a photometer. The optical measurement base has a fan-shaped structure and includes an arc plate, two straight plates with a common first side and respectively disposed at both ends of the arc surface, a light-emitting plate connected to the arc plate and the two straight plates respectively, and a light-shielding plate spaced apart from the light-emitting plate and rotatably disposed on the first side. A lamp plate is provided on the side of the light-emitting plate facing the light-shielding plate, and a photosensitive wall is provided on the side of the light-shielding plate facing the light-emitting plate. The photosensitive wall is connected to the photometer. One of the two straight plates is disposed on the outer wall of the outer shell on the side of the counterweight rotation direction.

2. The diversified tilt monitoring device based on fiber optic grating strain according to claim 1, characterized in that, The monitoring plate has an arc-shaped groove, and an arc-shaped slide is formed between the outer wall of the monitoring plate and the arc-shaped outer wall of the groove. The counterweight has an arc-shaped structure, and an arc groove is formed on the counterweight that runs through both ends of it. The counterweight is fitted onto the arc-shaped slide through the arc groove.

3. The diversified tilt angle monitoring device based on fiber optic grating strain according to claim 2, characterized in that, The infrared transmitter is positioned on the monitoring disk between the slides. The monitoring column has an L-shaped structure, which includes a horizontal part and a vertical part. The horizontal part is located on one side of the counterweight, and the vertical part is located between the infrared transmitter and the infrared receiver.

4. The diversified tilt angle monitoring device based on fiber optic grating strain according to claim 2, characterized in that, The contact surfaces between the arc-shaped slide and the arc groove are smoothly configured.

5. The diversified tilt angle monitoring device based on fiber optic grating strain according to claim 1, characterized in that, The adsorption assembly includes a base and a micro air pump. The bottom of the base has a cavity, and a soft rubber ring is provided on the bottom of the base outside the cavity. The outer wall of the base has a vent that communicates with the cavity, and the micro air pump communicates with the vent.

6. The diversified tilt monitoring device based on fiber optic grating strain according to claim 5, characterized in that, The base is a frustum structure with a large bottom and a small top, and the cavity is a frustum structure with a small bottom and a large opening.

7. The diversified tilt monitoring device based on fiber optic grating strain according to claim 1, characterized in that, The outer wall of the housing is equipped with a microcontroller and a power supply box, and the microcontroller is connected to the power supply box and the fiber Bragg grating sensor respectively.

8. The diversified tilt monitoring device based on fiber optic grating strain according to claim 1, characterized in that, The strain monitoring assembly also includes a shaft, with its two ends respectively disposed on two opposing inner sidewalls of the housing, and the monitoring disk is fixedly mounted on the shaft.

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