Flexible calibration embedded grating strain sensor mounting device

Abstract

The flexible calibration embedded grating strain sensor mounting device comprises a plurality of detection units, adjusting units and a spacing adjusting unit, the plurality of detection units are fixedly connected in the plurality of adjusting units respectively, the plurality of adjusting units are sequentially connected through the spacing adjusting unit, and the spacing adjusting unit is fixedly connected in the plurality of adjusting units. Each spacing adjusting unit comprises a transverse joint and a longitudinal joint seat, the transverse joints and the longitudinal joint seats are rotationally connected with the left ends and the right ends of the spacing adjusting units respectively, and the detection units can be arranged in a matrix mode through the multiple spacing adjusting units. The beneficial effects of the utility model are that through the multi-position combination of the spacing adjusting units and the adjusting units, the effect of flexibly calibrating the detection units can be realized, and through the detachability of the plurality of spacing adjusting units, the effect of simultaneously calibrating the plurality of detection units can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete floor monitoring, and in particular to a flexible calibrated embedded grating strain sensor installation device. Background Art

[0002] The embedded fiber Bragg grating strain sensor is specially used for measuring the internal strain of concrete, reinforced concrete or plastic materials, so as to observe the changes of its structural strain in the long term, conduct status analysis, and achieve the purpose of warning and fault diagnosis. However, the embedded fiber Bragg grating strain sensor needs to be manually measured from the initial positioning point to the multi-point positioning marking process, and the positioning point needs to be marked after the measurement, and then buried, which makes the calibration and installation inefficient. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, the utility model provides a flexible calibrated embedded grating strain sensor installation device, which can be used for pipe division and transportation after cutting, and can also limit the length of the cut pipeline.

[0004] The content of this application is used to introduce concepts in a brief form, which will be described in detail in the detailed implementation section below. The content of this application is not intended to identify the key features or essential features of the technical solution claimed for protection, nor is it intended to limit the scope of the technical solution claimed for protection.

[0005] In order to solve the technical problems mentioned in the above background technology part, some embodiments of the present application provide a flexible calibrated embedded grating strain sensor installation device including a detection unit, an adjustment unit and a spacing adjustment unit. A plurality of detection units are provided, and the plurality of detection units are respectively fixed in a plurality of adjustment units. The plurality of adjustment units are connected in sequence through the spacing adjustment unit. The spacing adjustment unit includes a transverse joint and a longitudinal seat. The transverse joint and the longitudinal seat are respectively rotatably connected to the left and right ends of the spacing adjustment unit. The detection units can be arranged in a matrix through the plurality of spacing adjustment units.

[0006] Furthermore, the detection unit includes an epitaxial optical fiber and a grating strain sensor, and the grating strain sensor is connected to the fiber grating demodulator via the epitaxial optical fiber.

[0007] Furthermore, the detection unit also includes a wrapping shell, a base, an inner sealing layer, a lifting push rod, a fixed frame and a cover, the base is arranged at the bottom of the wrapping shell, the inner sealing layer is slidably connected between the two wrapping shells, the lifting push rod is arranged on the cover, the fixed frame is fixedly connected to the wrapping shell located on the lower side, the lifting push rod is fixedly connected to the fixed frame, the grating strain sensor is arranged on the base, the cover is arranged on the wrapping shell located on the upper side, and the extension optical fiber passes through the cover.

[0008] Furthermore, the adjustment unit includes a stable bottom, a telescopic column, a connecting plate and an upper support cover, the base is arranged on the stable bottom, a plurality of telescopic columns are fixedly connected to the stable bottom, the connecting plate is fixedly connected to the inner sealing layer, the upper support cover is fixedly connected to the telescopic ends of the plurality of telescopic columns, and the transverse joint and the longitudinal seat are fixedly connected to the connecting plate.

[0009] Furthermore, the spacing adjustment unit includes a transverse slide, a calibration screw, a longitudinal slide and an adjustment nut. The transverse slide and the longitudinal slide are slidably connected. The calibration screw is threadedly transmitted with the transverse slide and the longitudinal slide. The adjustment nut is fixed to the calibration screw. The longitudinal slide is detachably connected to the longitudinal seat, and the transverse slide is detachably connected to the transverse joint.

[0010] Furthermore, the threads at both ends of the calibration screw rod have opposite rotation directions.

[0011] Furthermore, a scale for displaying the spacing is provided between the transverse slide and the longitudinal slide.

[0012] The beneficial effects of the utility model are:

[0013] The effect of flexibly calibrating the detection unit can be achieved by combining the spacing adjustment unit with the multi-position of the adjustment unit, and the effects of multiple detection units can be achieved simultaneously by the detachability of multiple spacing adjustment units. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings constituting a part of this application are used to provide a further understanding of this application, so that other features, purposes and advantages of this application become more obvious. The illustrative embodiment drawings and their descriptions of this application are used to explain this application and do not constitute an improper limitation on this application.

[0015] In addition, throughout the drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and that the components and elements are not necessarily drawn to scale.

[0016] In the attached picture:

[0017] Figure 1 It is an overall diagram of the utility model;

[0018] Figure 2 It is a cross-sectional view of the detection unit of the utility model;

[0019] Figure 3 This is a schematic diagram of the connection between the detection unit and the adjustment unit of the utility model;

[0020] Figure 4 It is the adjustment unit of the utility model;

[0021] Figure 5It is the spacing adjustment unit of the utility model.

[0022] In the figure: detection unit 1; adjustment unit 2; spacing adjustment unit 3; transverse joint 24; longitudinal seat 25; extension optical fiber 16; grating strain sensor 17; wrapping shell 11; base 12; inner sealing layer 13; lifting push rod 14; fixing frame 15; cover 18; stable bottom 21; telescopic column 22; connecting plate 23; upper support cover 27; transverse slide 31; calibration screw rod 32; longitudinal slide 33; adjustment nut 35. DETAILED DESCRIPTION

[0023] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not intended to limit the scope of protection of the present disclosure.

[0024] It should also be noted that, for ease of description, only the parts related to the relevant utility model are shown in the drawings. In the absence of conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.

[0025] It should be noted that the concepts such as "first" and "second" mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0026] It should be noted that the modifications of "one" and "plurality" mentioned in the present disclosure are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0027] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0028] Reference Figure 1-5As shown, the utility model describes a flexible calibration embedded grating strain sensor installation device, which includes a detection unit 1, an adjustment unit 2 and a spacing adjustment unit 3. The detection unit 1 is provided with a plurality of detection units 1, and the plurality of detection units 1 are respectively fixed in the plurality of adjustment units 2, and the plurality of adjustment units 2 are sequentially connected through the spacing adjustment unit 3. The spacing adjustment unit 3 includes a transverse joint 24 and a longitudinal seat 25, which are rotatably connected to the left and right ends of the spacing adjustment unit 3, respectively. The detection units 1 can be arranged in a matrix through the plurality of spacing adjustment units 3. When calibrating and installing, by selecting the initial calibration point, The spacing of multiple detection units 1 can be adjusted through the spacing adjustment unit 3, and different detection units 1 can be moved to the specified distance (i.e., the calibration position), and the matrix arrangement in an area can be completed through the cooperation of multiple transverse joints 24 and longitudinal sockets 25, and the calibration and installation of the detection units 1 can be completed. During the installation and burial process, the detection units 1 can always be supported by the adjustment unit 2 (the spacing adjustment unit 3 set will be removed after calibration), which can effectively prevent the phenomenon of unstable values ​​of multiple detection units 1. Multiple detection units 1 can be calibrated at the same time through multiple spacing adjustment units 3.

[0029] Specifically, the detection unit 1 includes an extension optical fiber 16 and a grating strain sensor 17 . The grating strain sensor 17 is connected to the fiber grating demodulator via the extension optical fiber 16 , so that the fiber grating demodulator can receive the signal transmitted by the grating strain sensor 17 in real time.

[0030] Specifically, the detection unit 1 also includes a wrapping shell 11, a base 12, an inner sealing layer 13, a lifting push rod 14, a fixing frame 15 and a cover 18. The base 12 is arranged at the bottom of the wrapping shell 11, the inner sealing layer 13 is slidably connected between the two wrapping shells 11, the lifting push rod 14 is arranged on the cover 18, the fixing frame 15 is fixedly connected to the wrapping shell 11 located on the lower side, the lifting push rod 14 is fixedly connected to the fixing frame 15, the grating strain sensor 17 is arranged on the base 12, the cover 18 is arranged on the wrapping shell 11 located on the upper side, the extension optical fiber 16 passes through the cover 18, the grating strain sensor 17 senses pressure, the base 12 is used to install the grating strain sensor 17, and a sliding sealing ring is arranged between the wrapping shell 11 and the inner sealing layer 13 to keep the interior from being affected by dust.

[0031] Specifically, the adjustment unit 2 includes a stable bottom 21, a telescopic column 22, a connecting plate 23 and an upper support cover 27. The base 12 is arranged on the stable bottom 21, and multiple telescopic columns 22 are fixedly connected to the stable bottom 21. The connecting plate 23 is fixedly connected to the inner sealing layer 13. The upper support cover 27 is fixedly connected to the telescopic ends of multiple telescopic columns 22. The transverse joint 24 and the longitudinal seat 25 are fixedly connected to the connecting plate 23. During the calibration and installation process, after the positioning installation, the spacing adjustment unit 3 cannot be used to continue to tighten the spacing adjustment calibration installation. It only needs to control the extension of the lifting push rod 14 to make the connecting plate 23 rise with the inner sealing layer 13. After rising, the connecting plate 23 can reach a sufficient height and will not affect the force parameters of the device after being buried again. The upper support cover 27 always provides a pressure-bearing function, and transmits it to the connecting plate 23 through multiple telescopic columns 22 and then to the ground through the stable bottom 21.

[0032] Specifically, the spacing adjustment unit 3 includes a transverse slide 31, a calibration screw 32, a longitudinal slide 33 and an adjusting nut 35. The transverse slide 31 and the longitudinal slide 33 are slidably connected, the calibration screw 32 is threadedly transmitted with the transverse slide 31 and the longitudinal slide 33, the adjusting nut 35 is fixed to the calibration screw 32, the longitudinal slide 33 is detachably connected to the longitudinal seat 25, and the transverse slide 31 is detachably connected to the transverse joint 24. When the position of the ceiling is moved and fixed, the adjusting nut 35 can be manually rotated to make the transverse slide 31 and the longitudinal slide 33 approach or move away from each other, thereby shortening or increasing the distance, thereby achieving the effect of quickly calibrating the position to be placed and installing it to the calibration position.

[0033] Specifically, the threads at both ends of the calibration screw rod 32 have opposite rotation directions, and can synchronously push the horizontal slide 31 and the longitudinal slide 33 to move through the threads during rotation, thereby quickly adjusting the spacing and being able to quickly adjust the calibration distance.

[0034] Specifically, a scale for displaying the spacing is provided between the transverse slide 31 and the longitudinal slide 33, so that the moving distance can be intuitively understood.

[0035] The above descriptions are only some preferred embodiments of the present disclosure and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the utility model involved in the embodiments of the present disclosure is not limited to the technical solutions formed by the specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above utility model concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the embodiments of the present disclosure.

Claims

1. A flexible calibration embedded grating strain sensor installation device, characterized in that: The invention comprises a detection unit (1), an adjustment unit (2) and a spacing adjustment unit (3), wherein a plurality of detection units (1) are provided, the plurality of detection units (1) are respectively fixedly connected to the plurality of adjustment units (2), the plurality of adjustment units (2) are sequentially connected via the spacing adjustment units (3), the spacing adjustment unit (3) comprises a transverse joint (24) and a longitudinal seat (25), the transverse joint (24) and the longitudinal seat (25) are respectively rotatably connected to the left and right ends of the spacing adjustment unit (3), and the detection units (1) can be arranged in a matrix through the plurality of spacing adjustment units (3).

2. The flexible calibration embedded grating strain sensor installation device according to claim 1, characterized in that: The detection unit (1) comprises an epitaxial optical fiber (16) and a grating strain sensor (17); the grating strain sensor (17) is connected to the fiber grating demodulator via the epitaxial optical fiber (16).

3. The flexible calibration embedded grating strain sensor installation device according to claim 2, characterized in that: The detection unit (1) further comprises a wrapping shell (11), a base (12), an inner sealing layer (13), a lifting push rod (14), a fixing frame (15) and a cover (18), wherein the base (12) is arranged at the bottom of the wrapping shell (11), the inner sealing layer (13) is slidably connected between the two wrapping shells (11), the lifting push rod (14) is arranged on the cover (18), the fixing frame (15) is fixedly connected to the wrapping shell (11) located at the lower side, the lifting push rod (14) is fixedly connected to the fixing frame (15), the grating strain sensor (17) is arranged on the base (12), the cover (18) is arranged on the wrapping shell (11) located at the upper side, and the extension optical fiber (16) passes through the cover (18).

4. The flexible calibration embedded grating strain sensor installation device according to claim 2, characterized in that: The adjustment unit (2) comprises a stable base (21), telescopic columns (22), a connecting plate (23) and an upper supporting cover (27); the base (12) is arranged on the stable base (21); the plurality of telescopic columns (22) are fixedly connected to the stable base (21); the connecting plate (23) is fixedly connected to the inner sealing layer (13); the upper supporting cover (27) is fixedly connected to the telescopic ends of the plurality of telescopic columns (22); and the transverse joint (24) and the longitudinal seat (25) are fixedly connected to the connecting plate (23).

5. The flexible calibration embedded grating strain sensor installation device according to claim 4, characterized in that: The spacing adjustment unit (3) comprises a transverse slide (31), a calibration screw (32), a longitudinal slide (33) and an adjustment nut (35); the transverse slide (31) and the longitudinal slide (33) are slidably connected to each other; the calibration screw (32) is connected to the transverse slide (31) and the longitudinal slide (33) through threaded transmission; the adjustment nut (35) is fixed to the calibration screw (32); the longitudinal slide (33) is detachably connected to the longitudinal seat (25); and the transverse slide (31) is detachably connected to the transverse joint (24).

6. The flexible calibration embedded grating strain sensor installation device according to claim 5, characterized in that: The threads at both ends of the calibration screw rod (32) are rotated in opposite directions.

7. The flexible calibration embedded grating strain sensor installation device according to claim 5, characterized in that: A scale for displaying the spacing is provided between the transverse slide (31) and the longitudinal slide (33).

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