Deformation conduction optical fiber sensor and sensor system

Abstract

The invention provides a deformation conduction optical fiber sensor which is installed on a measured object. The deformation conduction optical fiber sensor comprises a sensor conversion assembly, a sensor conduction assembly and an instrument. The sensor conversion assembly comprises a main body, an optical fiber installed on the main body in a preset form, and a transmission member, and one end of the transmission member is fixed on a measured object. The sensor conduction assembly is installed on the main body and fixed to the other end of the transmission part, and when the form of the measured object changes, the sensor conduction assembly enables the form of the optical fiber to change. An instrument (such as an OTDR) is connected with one end of the optical fiber and used for sensing the morphological change of the optical fiber and calculating measurement data representing the morphological change of the measured object according to the morphological change of the optical fiber. According to the device, the shape change of the measured object is conducted to cause the deformation of the optical fiber, so that the accurate measurement of deformation displacement such as stretching and compression of the measured object is realized. In addition, the invention also provides a sensor system.

Description

Technical Field

[0001] The present application relates to the field of sensor technology, and in particular to a deformation conduction optical fiber sensor and a sensor system. Background Art

[0002] For monitoring of building structures, landslides and other deformations involving bending, stress and other deformations, traditional sensors can usually only be used for monitoring at local locations, and large-scale distributed measurements cannot be achieved, and potential problems in other parts of the structure are easily ignored. The deployment of a large number of sensors and their connecting cables in large building structures not only increases the difficulty and cost of installation, but may also cause electromagnetic interference problems, affecting the accuracy of the data. In harsh environments, the service life of traditional sensors is limited, and frequent maintenance and replacement increase operation and maintenance costs. Based on the above background, there is an urgent need for a new type of monitoring technology that can overcome the limitations of traditional sensors. The purpose of the present invention is to provide a deformation conduction optical fiber sensor and a sensing system for monitoring building structures, landslides and other deformations involving bending, stress and other deformations, so as to solve the problems of limited monitoring range, complex wiring, and easy damage of sensors in the prior art. Summary of the invention

[0003] The present application provides a deformation conduction optical fiber sensor and a sensor system, which use a sensor conduction component to make the optical fiber change its shape as the shape of a measured object changes, and measure the deformation data of the measured object based on the change.

[0004] In a first aspect, the present application provides a deformation conduction optical fiber sensor, which is installed on an object to be measured. The deformation conduction optical fiber sensor includes a sensor conversion component, a sensor conduction component, and an instrument. The sensor conversion component includes a main body, an optical fiber installed on the main body in a preset shape, and a transmission member, one end of which is fixed on the object to be measured. The sensor conduction component is installed on the main body and fixed to the other end of the transmission member, and when the shape of the object to be measured changes, the sensor conduction component causes the shape of the optical fiber to change. An instrument (such as an OTDR) is connected to one end of the optical fiber to sense the shape change of the optical fiber, and calculates measurement data representing the shape change of the object to be measured based on the shape change of the optical fiber.

[0005] In a second aspect, the present application provides a sensor system, the sensor system comprising a plurality of the above-mentioned deformation conductive optical fiber sensors connected in series. Each deformation conductive optical fiber sensor can independently sense the morphological changes of the measured object, and the sensor system can be expanded to cover a larger monitoring range.

[0006] The above deformation transmission optical fiber sensor and sensor system sense the shape change of the measured object through the sensor transmission component, so that the optical fiber deforms accordingly. The instrument can accurately calculate the displacement changes such as stretching and compression of the measured object by sensing the deformation of the optical fiber, thereby providing high-precision deformation measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0008] Figure 1 A stereoscopic view of the deformation conduction optical fiber sensor provided in an embodiment of the present application.

[0009] Figure 2 This is a first stereoscopic schematic diagram of the deformation conduction optical fiber sensor body provided in an embodiment of the present application.

[0010] Figure 3 This is a second stereoscopic schematic diagram of the deformation conduction optical fiber sensor body provided in an embodiment of the present application.

[0011] Figure 4 This is a first stereoscopic schematic diagram of the optical fiber installation structure provided in an embodiment of the present application.

[0012] Figure 5 This is a first exploded schematic diagram of the optical fiber installation structure provided in an embodiment of the present application.

[0013] Figure 6 A second exploded schematic diagram of the optical fiber installation structure provided in an embodiment of the present application.

[0014] Figure 7 This is a second stereoscopic schematic diagram of the optical fiber installation structure provided in an embodiment of the present application.

[0015] Figure 8 This is a first stereoscopic schematic diagram of a sensor conducting assembly provided in an embodiment of the present application.

[0016] Fig. 9 This is a second stereoscopic schematic diagram of the sensor conducting assembly provided in an embodiment of the present application.

[0017] Fig.10 A schematic diagram of a sensor assembly provided in an embodiment of the present application.

[0018] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0020] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar planning objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate. In other words, the described embodiments are implemented according to an order other than that illustrated or described herein. In addition, the terms "including" and "having" and any of their variations may also include other content. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to only those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0021] It should be noted that the descriptions involving "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0022] Please see Figure 1 , Figure 1Schematic diagram of a deformation conduction optical fiber sensor provided in an embodiment of the present application. The present application provides a deformation conduction optical fiber sensor 99. The deformation conduction optical fiber sensor 99 senses an object to be measured (not shown). The deformation conduction optical fiber sensor 99 comprises a sensor conversion component 1, a sensor conduction component 2, and an instrument 4. The sensor conversion component 1 is connected to the sensor conduction component 2 and the instrument 4. Among them, the sensor conversion component 1 is provided with an optical fiber 5 installed in a preset shape. When the shape of the object to be measured changes, the sensor conduction component 2 causes the shape of the optical fiber to change, and the instrument 4 is connected to one end of the optical fiber 5, for sensing the shape change of the optical fiber 5 and calculating the measurement data indicating the shape change of the object to be measured according to the shape change of the optical fiber 5. In this embodiment: the object to be measured can be a building, a slope, or other object to be monitored; when the shape of the object to be measured changes, for example, when the object to be measured is stretched or compressed, the optical fiber 5 will change shape, thereby converting the shape change of the object to be measured into the shape change of the optical fiber 5, and then converting the shape change of the optical fiber 5 into an optical signal, that is, the measurement data of the shape change of the object to be measured.

[0023] The sensor conversion assembly 1 includes a main body 11, an optical fiber 5 installed on the main body in a preset shape, and a transmission member 25. One end of the transmission member 25 is fixed to the object to be measured. The transmission member 25 is a transmission rod or a transmission line. In this embodiment, the optical fiber material can be either a single-mode optical fiber or a multi-mode optical fiber according to the use requirements. Specifically, the morphological changes of the object to be measured include tensile deformation and compressive deformation. When the object to be measured undergoes tensile deformation, the transmission member 25 is in a tensile state and applies a force to the sensor transmission assembly 2 so that the sensor transmission assembly 2 moves along a first direction and causes the optical fiber 5 to undergo a first deformation; when the object to be measured undergoes compressive deformation, the transmission member 25 is in a relaxed state, so that the force applied to the sensor transmission assembly 2 is released and the sensor transmission assembly 2 slides in a second direction opposite to the first direction and causes the optical fiber 5 to undergo a second deformation. Furthermore, when the light incident from the light source of instrument 4 is sent into instrument 4 via the scattered light generated by optical fiber 5, the shape of the object being measured changes, causing optical fiber 5 to change, which in turn causes the optical properties of the light sent into instrument 4, such as light intensity, wavelength, frequency, phase, polarization state, etc., to change, thereby obtaining measurement data.

[0024] Please see Figure 2-Figure 3 The main body 11 is generally a hollow rectangular body with an opening 110. The main body 11 is provided with a first receiving cavity 113 and two second receiving cavities 114 respectively located at both ends of the first receiving cavity 113. The first receiving cavity 13 and the two second receiving cavities 14 are connected to the opening 110. The main body 11 is provided with a mounting structure 112 for the optical fiber 5, and the mounting structure 112 covers the opening 110.

[0025] The main body 11 is also provided with an optical fiber installation structure 16 and a cover plate 15. The first wire groove 11 and the second wire groove 12 are symmetrically arranged along the length direction of the main body 11, and the first wire groove 11 and the second wire groove 12 are used to place the optical fiber 5. The main body 11 is also provided with a cover plate 15 covering the first receiving cavity 13 and the second receiving cavity 14.

[0026] More specifically, the main body 11 further includes an optical fiber installation structure 16 located below the cover plate 15 and covering the first receiving cavity 13, and the first wire groove 11 and the second wire groove 12 are arranged on the optical fiber installation structure 16. The main body 11 further includes a sealing ring 18 arranged around the edge of the top surface of the main body 11. When the cover plate 15 passes through the fixing member (not shown), the sealing ring 18 is squeezed by the cover plate 15 and the main body 11 and deformed, so that the deformation conductive optical fiber sensor 99 has a better sealing effect.

[0027] Please see Figure 4-Figure 7 Specifically, the optical fiber installation structure 16 includes a first optical fiber installation structure 160 and a second optical fiber installation structure 162 which are arranged opposite to each other. The second optical fiber installation structure 162 is arranged opposite to the cover plate 15, and the first optical fiber installation structure 160 is far away from the cover plate 15. A first slider groove 1604 and an opening 1602 arranged at the bottom of the first slider groove 1604 are provided in the middle position of the first optical fiber installation structure 160 along the width direction. A pair of convex strips 164a and 164b arranged along the length direction are provided at both ends of the opening 1602 of the first optical fiber installation structure 160, that is, the first optical fiber installation structure 160 has two pairs of convex strips 1604a and 1604b. Each pair of convex strips 1604a and 1604b is respectively provided with a plurality of first clamping blocks 1606a and a plurality of second clamping blocks 1606b. The first optical fiber installation structure 160 is also provided with a sliding groove 1608 arranged along the length direction between the pair of convex strips 1604a and 1604b.

[0028] The second optical fiber mounting structure 162 is adapted to the first optical fiber mounting structure in appearance. The second optical fiber mounting structure 162 is interlocked with the first optical fiber mounting structure 160. A second slider groove 1622 is provided at a position of the second optical fiber mounting structure 162 corresponding to the first slider groove 1604. The first wire groove 11 and the second wire groove 12 are provided on the second optical fiber mounting structure 162 and correspond to the convex strips 1604a and 1604b. The convex strips 1604a and 1604b are embedded in the first wire groove 11 and the second wire groove 12. The second optical fiber mounting structure 162 also passes through a reset hole 1623.

[0029] The second optical fiber installation structure 162 is provided with a plurality of first card blocks 1606a and a plurality of second card blocks 1606b, and the plurality of first card blocks 1606a and a plurality of second card blocks 1606b on the second optical fiber installation structure 162 are staggered with the plurality of first card blocks 1606a and a plurality of second card blocks 1606b on the protruding strips 1604a and 1604b. The optical fiber installation structure 16 is provided with a first wire groove 11 and a second wire groove 12, and the optical fiber installation structure 16 also includes two first groove walls surrounding the first wire groove 11, and two second groove walls surrounding the second wire groove 12. The two first groove walls are respectively provided with a plurality of first card blocks 1606a protruding toward the first wire groove 11. The two second groove walls 110 are respectively provided with a plurality of second clamping blocks 1606b protruding toward the second wire groove 12, a plurality of first clamping blocks 1606a are arranged in a staggered manner, and the second clamping blocks 1606a are arranged in a staggered manner. The optical fiber 5 located in the first wire groove 11 and the second wire groove 12 is abutted by the first clamping blocks 1606a and the second clamping blocks 1606b and is restricted in a curved shape to the first wire groove 11 and the second wire groove 12. It can be understood that the optical fiber installation structure 16 can be made into a whole. The portion where the first clamping blocks 1606a and the second clamping blocks 1606b abut against the optical fiber 5 is a curved surface.

[0030] Please see again Figure 3 The main body 11 includes a first cavity wall 130 that encloses the first receiving cavity 13. The first cavity wall 130 includes two end walls 1301a and 1301b shared by the first receiving cavity 13 and the second receiving cavity 14. The end walls 1301a and 1301b are provided with grooves 13010.

[0031] Please refer to Figure 8 and Fig. 9 The sensor transmission component 2 includes an elastic sliding body slidably mounted on the main body 11 and a slide groove and an optical fiber deformation structure arranged on the elastic sliding body. The elastic sliding body includes a sliding body 23 and an elastic member 24 slidably mounted in the main body 11. The elastic member 24 and the sliding body 23 are accommodated in the first accommodating cavity 13, so that the elastic member 24 is restricted between one end of the sliding body 23 and the side of the main body 11 facing the sliding body 23. Among them, in the initial state, the elastic member 24 is in a deformed state and accumulates elastic force. The optical fiber deformation structure includes a first slider 21 and a second slider 22 arranged along the width direction of the main body 11.

[0032] The sliding body 23 is provided with a first slide groove 230 and a second slide groove 232. The first slider 21 and the second slider 22 are slidably mounted on the first slide groove 230 and the second slide groove 232, respectively. When the measured object changes or the main body is loosened, the transmission member 25 is stretched to drive the sliding body 23 to slide in the first direction or the second direction, that is, to slide along the length direction of the main body 11. When the sliding body 23 slides, the first slider 21 or the second slider 22 slides under the restriction of the first slide groove 230 or the second slide groove 232 and protrudes toward the first wire groove 11 or the second wire groove 12 to apply force to the optical fiber 5 in the first wire groove 11 or the optical fiber 5 in the second wire groove 12, so that the optical fiber 5 is converted from the first curvature to the second curvature. The first curvature and the second curvature are used for the sensor assembly 4 to calculate the measurement data according to the first curvature and the second curvature.

[0033] The sliding body 23 includes a base 233, a sliding part 234 matched with the base 233, and a one-way wire locker 235. The base 233 is fixedly connected to one end of the transmission member 25, and a top plate (not shown) is provided on the side of the sliding part 234 away from the base 233, and the first slide groove 230 and the second slide groove 232 are provided on the top plate. The sliding part also includes a connecting part (not shown), which is located between the base 233 and the top plate. The connecting part includes a rectangular side plate 2360 extending from the edge of the top plate, and the base 233 is matched with the connecting part and connected and arranged opposite to the top plate. Among them, the sliding body 23 is roughly in the shape of a letter B placed horizontally. The base 233 and the connecting part are hollow square bodies with an opening on the top, and the top plate covers the opening and is much longer than the base 233. A convex column (not shown) is provided on the side of the top plate away from the base 233, and the convex column is penetrated in the sliding groove 1608. The one-way wire locker 235 is disposed on the base 233 and locked to the transmission member 25. The one-way wire locker 235 includes a locking buckle 2350 and corresponds to the reset hole 1623. In this embodiment, the transmission member 25 can be a steel wire or a steel bar. The transmission member 25 can only be restricted to move along the first direction in the one-way wire locker 235. The locking buckle 2350 is pressed by the user through the reset hole 1623 with a tool to move the transmission member 25 in two first directions and a second direction, so that the length of the transmission member 25 in the main body 11 can be adjusted, so as to keep the deformation conductive optical fiber sensor 99 reusable and convenient for maintenance.

[0034] The first slide groove 230 includes a first straight line segment 230a, a first folded line segment 230b, and a second folded line segment 230c, which are sequentially arranged. The second slide groove 232 includes a second straight line segment 232a and a third folded line segment 232b, which are sequentially arranged. The second straight line segment 232a is opposite to the first straight line segment 230a. The third folded line segment 232b is opposite to the first folded line segment 230b and the second folded line segment 230c. The first folded line segment 230b and the third folded line segment 232b have similar bending angles and are bent toward the first line groove 11. The second folded line segment 230c is bent toward the second line groove 12 relative to the first folded line segment 230b.

[0035] The first slider 21 and the second slider 22 have the same structure. The first slider 21 and the second slider 22 respectively include sliding posts 212 and 222, and a push top. The sliding post 212 of the first slider 21 is formed by vertically extending from one side of the push top, and the other side of the push top away from the sliding post 212 is provided with a first limiting portion 214 and a second limiting portion 215 arranged oppositely, and a limiting groove 216 located between the first limiting portion 214 and the second limiting portion 215. The sliding post 222 of the second slider 22 is formed by vertically extending from one side of the push top, and the other side of the push top away from the sliding post 222 is provided with a first limiting portion 224 and a second limiting portion 225 arranged oppositely, and a limiting groove 226 located between the first limiting portion 224 and the second limiting portion 225. The optical fiber 5 located in the first wire groove 11 and the second wire groove 12 can be operably located in the limiting groove 216 or the limiting groove 226 of the first slider 21 or the second slider 22.

[0036] During the measurement process, when the measured object changes, the transmission member 25 will be subjected to force and pull the sliding body 23 to slide along the first direction, so that the first slider 21 and the second slider 22 slide toward the first wire groove 11, so that the optical fiber 5 located in the first wire groove 11 is pulled and the curvature changes from the first curvature to the second curvature, and the change in curvature is measured by the sensor assembly 4; when the deformation transmission optical fiber sensor 99 is loose, the elastic member 24 will release the elastic force and the sliding body 23 will slide along the second direction opposite to the first direction, so that the first slider 21 and the second slider 22 slide toward the second wire groove 11, so that the optical fiber 5 located in the second wire groove 11 is pulled and the curvature of the optical fiber 5 changes from the first curvature to the second curvature, and the change in curvature is measured by the sensor assembly 4. It can be understood that the second curvature only means that it is different from the first curvature, and is not limited to a specific value, that is, the second curvature of the optical fiber 5 located in the first wire groove 11 and the second wire groove 12 after the change can be different or the same, which is not limited here. The first curvature only represents the initial curvature of the optical fiber 5 located in the first wire groove 11 and the second wire groove 12, and does not represent a specific value, that is, the initial curvature of the optical fiber 5 located in the first wire groove 11 and the second wire groove 12 can be different or the same, which is not limited here.

[0037] In this embodiment, according to the different sensing scenes, the deformation conduction optical fiber sensor 99 can be arranged in different ways, and different numbers of deformation conduction optical fiber sensors 99 can be arranged according to different arrangement methods, thereby determining different fiber material arrangement methods. For example, when the sensing scene is a scene of a single building position that is prone to deformation, such as a wall edge, a single-point arrangement method can be adopted, that is, after analyzing the points that are prone to deformation in advance, the deformation conduction optical fiber sensor 99 is directly arranged according to the corresponding optical fiber material at the point that is prone to deformation. For another example, when the sensing scene is a scene with a long sensing distance and a large sensing scene area, such as a slope or perimeter security, a multi-point or distributed arrangement method can be adopted, and the number of deformation conduction optical fiber sensors 99 is determined according to the area of ​​the sensing scene of the slope and the sensing boundary of the perimeter security, and then the corresponding fiber material arrangement method is further determined according to the arrangement position of the deformation conduction optical fiber sensor 99.

[0038] In some feasible embodiments, after the deformation conduction optical fiber sensor 99 is deployed, in order to increase the service life of the deformation conduction optical fiber sensor 99 and reduce the cost of replacing components, it is also necessary to consider the environmental factors of the sensing scene where the deformation conduction optical fiber sensor 99 is deployed, and then take certain measures to make the deformation conduction optical fiber sensor 99 sufficiently resistant to environmental factors. For example, when the sensing scene is a corrosive scene, in order to enhance the corrosion resistance of the deformation conduction optical fiber sensor 99 in the corrosive scene, corresponding anti-corrosion coatings, components, etc. can be added to the outer shell part and internal components of the deformation conduction optical fiber sensor 99 to enhance the corrosion resistance of the deformation conduction optical fiber sensor 99.

[0039] Please refer to Fig.10 , which is a schematic diagram of a sensor system 999. The sensor system 999 includes a plurality of deformation conduction fiber optic sensors 99 and a sensor assembly 4. The number of the plurality of deformation conduction fiber optic sensors 99 can be set according to actual needs. For example, the wider the measurement range, the more deformation conduction fiber optic sensors 99 are required. The plurality of deformation conduction fiber optic sensors 99 are connected in series through a transmission member 25 and an optical fiber 5. For the specific structure of the deformation conduction fiber optic sensor 99, please refer to the deformation conduction fiber optic sensor 99. The difference is that the deformation conduction fiber optic sensor 99 at the head end of the plurality of deformation conduction fiber optic sensors 99 is connected to the sensor assembly 4 through an optical fiber 5, that is, the plurality of deformation conduction fiber optic sensors 99 share one sensor assembly 4.

[0040] In the above embodiment, when the shape of the measured object is changed by the sensor transmission component, the shape of the optical fiber is changed, so that the measurement data of the shape change of the measured object can be calculated by the sensor component, thereby measuring the stretching and compression length values ​​of the measured object, solving the problem of the measured object directly acting on the optical fiber, and avoiding the situation of optical fiber dislocation and breakage.

[0041] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

[0042] The above examples are only preferred embodiments of the present application, and certainly cannot be used to limit the scope of rights of the present application. Therefore, equivalent changes made according to the claims of the present application still fall within the scope covered by the present application.

Claims

1. A deformation conductive optical fiber sensor, installed on a measured object, characterized in that: The deformation conduction optical fiber sensor comprises: The sensor conversion assembly includes a main body, an optical fiber installed on the main body in a preset form, and a transmission member, one end of which is fixed on the object to be measured; a sensor transmission component, which is installed on the main body and fixed to the other end of the transmission member, and when the shape of the object to be measured changes, the sensor transmission component causes the shape of the optical fiber to change accordingly; and a measuring instrument, which is connected to one end of the optical fiber and is used to sense the shape change of the optical fiber and calculate measurement data representing the change in the shape of the object to be measured based on the shape change of the optical fiber.

2. The deformation conductive optical fiber sensor according to claim 1, characterized in that: The morphological change of the measured object includes tensile deformation and compressive deformation. When the measured object undergoes tensile deformation, the transmission member is in a tensile state and applies a force to the sensor transmission component to make the sensor transmission component move along a first direction and cause the optical fiber to undergo a first deformation. When the measured object undergoes compressive deformation, the transmission member becomes relaxed, so that the force applied to the sensor conductive component is released and slides in a second direction opposite to the first direction, thereby causing the optical fiber to undergo a second deformation.

3. The deformation conductive optical fiber sensor according to claim 2, characterized in that: The sensor transmission component includes an elastic sliding body slidably installed in the main body, a sliding groove and an optical fiber deformation structure arranged on the elastic sliding body; when the elastic sliding body slides, the optical fiber deformation structure acts on the optical fiber under the restriction of the sliding groove to cause the optical fiber to undergo the first deformation or the second deformation.

4. The deformation conductive optical fiber sensor according to claim 3, characterized in that: The transmission member is a transmission rod or a transmission line.

5. The deformation conductive optical fiber sensor according to claim 3, characterized in that: The transmission member passes through the main body, the elastic sliding body includes a spring and a sliding body, the sliding groove is arranged on the sliding body, the spring is limited between the sliding body and the main body, and the spring is in a stretched state in an initial state and accumulates elastic force.

6. The deformation conductive optical fiber sensor according to claim 3, characterized in that: The optical fiber deformation structure includes a slider and a pushing top portion arranged on the slider. The slider is slidably installed in the slide groove. When the slider slides under the restriction of the slide groove, the pushing top portion pushes the optical fiber as the slider slides, causing the optical fiber to deform.

7. The deformation conductive optical fiber sensor according to claim 6, characterized in that: The slide groove includes a first slide groove and a second slide groove arranged in parallel, the slider includes a first slider and a second slider installed in the first slide groove and the second slide groove in a one-to-one correspondence, the optical fiber includes a first optical fiber and a second optical fiber arranged in parallel, and the first slider and the second slider are located between the first optical fiber and the second optical fiber, when the measured object is stretched and deformed, the first slider and the second slider slide toward the direction of the first optical fiber respectively, so that the corresponding two estimation parts push up the first light and relax the second optical fiber respectively; When the measured object undergoes compressive deformation, the first slider and the second slider slide toward the direction of the second optical fiber respectively, so that the corresponding two estimation parts push up the second light and relax the first optical fiber respectively.

8. The deformation conductive optical fiber sensor according to claim 7, characterized in that: The main body is provided with a first wire groove, a second wire groove, a plurality of first clamping blocks protruding toward the first wire groove, and a plurality of second clamping blocks protruding toward the second wire groove. The first wire groove and the second wire groove are used to place the first optical fiber and the second optical fiber in a one-to-one correspondence. The plurality of first clamping blocks are staggered, and the second clamping blocks are staggered. The optical fibers located in the first wire groove and the second wire groove are restricted by the first clamping blocks and the second clamping blocks and are restricted in the first wire groove and the second wire groove in a curved shape.

9. The deformation conductive optical fiber sensor according to claim 8, characterized in that: The optical fiber deformation structure and the elastic sliding body are both located in the main body, and the optical fiber deformation structure is located directly above the elastic sliding body.

10. A sensor system, characterized in that: The sensor system comprises a plurality of deformation-conducting optical fiber sensors connected in series in sequence, and each of the deformation-conducting optical fiber sensors is a deformation-conducting optical fiber sensor as claimed in any one of claims 1 to 9.

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