Waterproof multi-measuring-point optical fiber roof separation sensor based on 5G fusion technology

Abstract

A waterproof multi-measuring-point optical fiber roof separation sensor based on 5G fusion technology, comprising a shell and a plurality of core components, the shell comprises a conduit part at the upper end and a core part at the lower end, the conduit part is arranged in the drill hole of the roadway ceiling and is fixedly connected with the hole wall, the lower end of the conduit part is connected with the core part arranged outside the drill hole, the core components of the roof separation sensor are arranged in the core part, the core components comprise a steel wire rope, a light sensing unit and a pressure sensing unit, the light sensing unit comprises a cantilever beam provided with an optical fiber, the steel wire rope is anchored in the drill hole of the roadway through the upper end of the conduit part and is connected with the cantilever beam at the lower end, a pressure sensing synapse is arranged between the cantilever beam and the pressure sensing unit for contact connection, and the pressure sensing unit is connected with a pressure sensing monitoring device outside the mine. One sensor can anchor multiple layers of rock in one drill hole, and the prediction of roof separation accidents is more accurate.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mine safety production, in particular to a waterproof multi-measuring-point fiber roof separation sensor based on 5G fusion technology. BACKGROUND

[0002] The fiber roof separation sensor is a new type of optical fiber displacement sensor, when the roof displacement occurs, the internal fiber grating wavelength changes, and the roof separation amount can be obtained by demodulating and analyzing the change of the grating wavelength, which solves the problems of dust prevention, waterproof, anti-electromagnetic interference and the like. The fiber roof separation sensor can realize in-situ passive display, and can also realize real-time online display of the current roof separation amount through the monitoring host.

[0003] At present, the fiber roof separation sensors on the market, such as the mine large-range fiber grating passive roof separation sensor disclosed in the patent CN109631791A of the applicant, basically use a steel wire rope wound on a wire reel, the upper end of the steel wire rope is anchored in a drill hole in the roadway ceiling, when the rock layer where the upper end of the steel wire rope is anchored is displaced, the steel wire rope pulls the wire reel to rotate, the wire reel is fixed with a coaxial inclined surface slider, the inclined surface slider drives the cantilever beam to rotate when the wire reel rotates, so that the fixed fiber on the cantilever beam is deformed, and then the wavelength of the fiber grating in the fiber is changed, and then the data of the roof separation is measured.

[0004] In summary, the internal structure of the traditional fiber roof separation sensor is complex, and the space left for the roof separation sensor is limited, so that only two core components of different depths can be accommodated in one sensor, and the displacement of the roof separation needs to be transmitted layer by layer to be converted into the wavelength change of the fiber grating in the fiber, which results in low precision of the sensor, and the roof separation displacement detection of the traditional fiber roof separation sensor can only be detected by the wavelength change of the fiber grating, and cannot be verified, and if the sensor fails to report or conceal, there is no other means to verify, and the reliability is poor. SUMMARY

[0005] In order to solve the problems of the prior art, the present application provides a waterproof multi-measuring-point fiber roof separation sensor based on 5G fusion technology, the steel wire rope of the roof separation sensor is directly connected with the cantilever beam provided with the fiber, the internal space is reduced, a plurality of core components can be accommodated in the sensor, so that a plurality of anchor points can be arranged in the drill hole by one sensor, more rock layers can be monitored, the roof separation accident prediction is more comprehensive, and after the wire reel and the inclined surface slider are omitted, the displacement of the rock layer can be directly transmitted to the cantilever beam through the steel wire rope, the precision is higher, the interference is less, the pressure gauge is added below the cantilever beam of the roof separation sensor, the data transmitted back by the pressure gauge is used to verify the data transmitted back by the fiber, and the reliability of the roof separation sensor is ensured.

[0006] The technical scheme of the present application is as follows:

[0007] A waterproof multi-measuring-point optical fiber roof separation sensor based on 5G fusion technology, comprising a shell and a plurality of core components, the shell comprises a conduit part at the upper end and a core part at the lower end, the conduit part is arranged in the drill hole of the roadway ceiling and is fixedly connected with the hole wall, thereby fixing the entire sensor on the roadway ceiling, the lower end of the conduit part is connected perpendicularly with the core part arranged outside the drill hole, the core components of the roof separation sensor are arranged in the core part, and the waterproof sealing function is provided by the core part of the shell, the core components comprise a steel wire rope, a light sensing unit and a pressure sensing unit, the light sensing unit comprises a cantilever beam provided with an optical fiber, the steel wire rope is anchored in the drill hole of the roadway through the upper end of the conduit part and is connected with the cantilever beam at the lower end, and a pressure sensing synapse is arranged between the cantilever beam and the pressure sensing unit for contact connection. The optical fiber on the cantilever beam is connected with a fiber grating demodulator arranged outside the roadway, the wavelength value of the current optical fiber grating is read by the fiber grating demodulator, the pressure sensing unit is connected with a pressure sensing monitoring device outside the mine through 5G fusion technology, when the cantilever beam is deformed to cause the wavelength of the optical fiber grating to change, the force applied by the cantilever beam on the pressure sensing unit will also change, the pressure sensing unit sends an electric signal to the pressure sensing monitoring device outside the mine, and the pressure sensing monitoring device converts the pressure applied by the cantilever beam on the pressure sensing unit to obtain the displacement change value of the roof separation, which is compared with the value analyzed by the fiber grating demodulator.

[0008] The waterproof multi-measuring-point optical fiber roof separation sensor based on 5G fusion technology is as described above, the core part of the shell comprises a top cover and a protection box, the conduit part is connected perpendicularly above the top cover, a ring of open grooves is arranged on the inner side of the protection box, the shape of the open grooves is matched with the shape of the top cover, a sealing rubber ring is arranged at the bottom of the open grooves, and the sealing rubber ring can improve the sealing property of the shell. The top cover is fixed on the upper end opening of the protection box through bolts.

[0009] Further, a placement bin is formed between the top cover and the protection box, a mounting groove is arranged between the top cover and the upper side of the placement bin, the core components further comprise a mounting plate, the mounting plate is horizontally arranged in the placement bin of the protection box, the light sensing unit and the pressure sensing unit are both fixed on the lower surface of the mounting plate, the shape of the mounting plate is matched with the shape of the mounting groove, and the placement bin is arranged in the mounting groove and the mounting plate to mount and fix the light sensing unit and the pressure sensing unit, thereby reducing the use of bolts.

[0010] Further, the light sensing unit comprises a cantilever beam, the cantilever beam comprises a connecting part, a deformation part and a fixed part, the cantilever beam is parallel to the mounting plate, the fixed part is connected with the mounting plate through a connecting piece, the connecting part is connected with the steel wire rope, the deformation part is connected between the connecting part and the fixed part, the lower surface of the deformation part is provided with a limiting groove, an optical fiber is arranged in the limiting groove, the optical fiber is connected with a fiber grating demodulator outside the roadway, and the two ends of the limiting groove are connected with the connecting part and the fixed part.

[0011] Further, the shape of the connecting part comprises a circular ring, the outer diameter of the connecting part is larger than the minimum width of the deformation part, so that the deformation part can be pulled more easily, thereby improving the monitoring accuracy of the sensor.

[0012] Further, the steel wire rope passes through the hole in the middle of the connecting part, the lower end of the steel wire rope is provided with a positioning pull ring, and a limiting block is movably connected between the positioning pull ring and the cantilever beam on the steel wire rope. When the upper end of the steel wire rope is anchored in the hole in the roof of the roadway, the positioning pull ring can be pulled to pull out the excess steel wire rope until the steel wire rope is in a straight force state, and then the position of the limiting block on the steel wire rope is adjusted, so that the limiting block is movably connected with the connecting part of the cantilever beam.

[0013] Further, the shape of the limiting block comprises a conical shape, and the maximum diameter of the limiting block is larger than the diameter of the hole in the connecting part. The limiting block is prevented from directly passing through the hole in the connecting part.

[0014] Further, the shape of the deformation part comprises an isosceles trapezoid, the width of one end connected with the connecting part is small, so that the one end of the deformation part connected with the connecting part is more easily deformed, and the width of the one end connected with the fixed part is large, thereby ensuring the overall strength of the deformation part.

[0015] Further, the overall material of the cantilever beam is selected from spring steel, the spring steel has good metallurgical quality, surface quality, precise shape and size, is suitable for manufacturing cantilever beams with very strict standards and errors, and most importantly, the spring steel has very good anti-rebound performance, i.e., anti-elastic decline performance, also known as anti-relaxation performance. The cantilever beam often needs to bear the tension of the steel wire rope to be deformed, and the cantilever beam made of spring steel can bear a certain load and restore to the original state after the load is removed, without permanent deformation.

[0016] Further, the pressure sensing unit comprises a pressure sensor arranged above a deformation part of a cantilever beam, the upper surface of the pressure sensor is fixed to the mounting plate, one side of the deformation part is provided with a pressure synapse, the pressure synapse is movably connected to the cantilever beam, the height of the pressure synapse protrusion can be adjusted by rotating the adjusting bolt, so as to adjust the pressure applied by the cantilever beam on the pressure sensor under no load (i.e. at 0 point position), and the zero setting operation of the pressure sensor is facilitated.

[0017] The waterproof multi-measuring-point optical fiber roof separation sensor based on 5G fusion technology has the advantages that the lower end of the pipe body is provided with a connecting disc, the diameter of the connecting disc is larger than that of the pipe body, and the connecting disc is fixedly connected to the upper surface of the core part through bolts.

[0018] Further, a plurality of isolation core plates parallel to the axis of the pipe part are arranged in the pipe part, the isolation core plates divide the space in the pipe body into a plurality of isolation cavities, and the steel wire ropes pass through the corresponding isolation cavities and are anchored to the anchor claws in the drill holes.

[0019] Further, a sealing plug is arranged at the top opening of the pipe part, the upper end of the steel wire rope passes through the sealing plug and is anchored to the drill hole, the sealing plug comprises a sealing part and a plurality of connecting feet, the diameter of the sealing part is not less than the outer diameter of the pipe part, so that the sealing part can completely cover the pipe part and play a sealing role, the connecting feet are arranged on the lower surface of the sealing part, the shape of each connecting foot is matched with the cross-sectional shape of the isolation cavity, the outer size of the connecting feet is 0.1-0.5mm larger than the cross section of the isolation cavity, the sealing plug is made of rubber as a whole and has a certain elasticity, and the connecting feet and the isolation cavities of the pipe part are sealingly connected in an interference mode.

[0020] The present application has the following advantages:

[0021] 1. The waterproof multi-measuring-point optical fiber roof separation sensor based on 5G fusion technology has the advantages that the sensor adopts a multi-measuring-point design, one sensor can anchor multiple layers of rock strata in one drill hole and simultaneously monitor the separation of the rock strata, and the prediction of roof separation accidents is more accurate.

[0022] 2, The water-proof multi-measuring-point optical fiber roof separation sensor based on 5G fusion technology, compared with a traditional optical fiber roof separation sensor, the core component of the sensor is simplified, the displacement conduction mode of the steel wire rope-wire wheel-inclined surface sliding block-cantilever beam is abandoned, the direct connection mode of the steel wire rope-cantilever beam is used, the volume occupation is reduced, and the monitoring accuracy of the sensor is improved;

[0023] 3, The water-proof multi-measuring-point optical fiber roof separation sensor based on 5G fusion technology, the core component of the sensor adds a pressure sensing unit, each set of light sensing unit corresponds to a set of pressure sensing unit, two completely different roof displacement detection modes are adopted to verify each other, and the accuracy of the returned data is guaranteed. BRIEF DESCRIPTION OF DRAWINGS

[0024] The scheme and advantages of the present application will become clear to those skilled in the art from the following detailed description of the preferred embodiments. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not considered to be limiting to the present application.

[0025] In the drawings:

[0026] Figure 1 The structure diagram of the water-proof multi-measuring-point optical fiber roof separation sensor based on 5G fusion technology in embodiment 1 is shown.

[0027] Figure 2 The internal structure diagram of the core part in embodiment 1 is shown.

[0028] Figure 3 The core component structure diagram in embodiment 1 is shown.

[0029] Figure 4 The internal cross-sectional view diagram of the catheter part in embodiment 1 is shown.

[0030] Figure 5 The structure diagram of the sealing plug installed at the top end of the catheter part in embodiment 1 is shown.

[0031] Figure 6 The top view diagram of the sealing plug in embodiment 1 is shown.

[0032] Figure 7 The operation principle diagram of the multi-measuring-point optical fiber roof separation sensor in embodiment 1 is shown.

[0033] The components represented by the reference signs in the drawings are:

[0034] 1, housing; 11, catheter part; 111, connecting disc; 112, isolation core plate; 113, isolation cavity; 114, sealing plug; 115, sealing part; 116, connecting leg; 117, fixing hook leg; 12, core part; 121, top cover; 122, protection box; 123, placement bin; 124, open slot; 125, sealing rubber ring; 126, mounting slot; 2, core component; 21, steel wire rope; 211, limiting block; 212, positioning pull ring; 22, light sensing unit; 221, cantilever beam; 222, connecting part; 223, deformation part; 224, fixing part; 225, pressure sensing synapse; 226, limiting slot; 23, pressure sensing unit; 231, pressure sensor; 24, mounting plate.

[0035] The application will be further described with reference to the specific embodiments and further examples, which are intended to explain the application, but not to limit the scope of the application. DETAILED DESCRIPTION

[0036] Reference is made to Figures 1-7The utility model provides a kind of waterproof multi-measuring point optical fiber roof separation sensor based on 5G fusion technology, including shell 1 and several sets of core components 2, the shell 1 includes the conduit portion 11 of upper end and the core portion 12 of lower end, the conduit portion 11 is arranged in the borehole of roadway ceiling, is fixedly connected with hole wall, fixes entire sensor on roadway ceiling, the lower end of the conduit portion 11 is vertically connected with the core portion 12 arranged outside borehole, and the core component 2 of the roof separation sensor is arranged in the core portion 12, and waterproof sealing function is provided by the core portion 12 of shell 1, to prevent water and dust in roadway from corroding and damaging the core portion 12, the core component 2 includes steel wire rope 21, light sensing unit 22 and pressure sensing unit 23, the light sensing unit 22 includes cantilever beam 221 provided with optical fiber, the steel wire rope 21 is anchored in the borehole of roadway at the upper end of conduit portion 11, and the lower end is connected with cantilever beam 221, and contact connection is arranged between cantilever beam 221 and pressure sensing unit 23 with pressure sensing synapse 225.The optical fiber on the cantilever beam 221 is connected with the fiber grating demodulator arranged outside roadway, and the wavelength numerical value of current optical fiber grating is read by fiber grating demodulator analysis, and the displacement change numerical value of roof separation is obtained, the pressure sensing monitoring device outside mine is connected with the pressure sensing unit 23 by 5G fusion technology, when cantilever beam 221 is deformed and causes the wavelength of optical fiber grating to change, the force exerted on pressure sensing unit 23 by cantilever beam 221 will also change, and the electric signal of pressure sensing unit 23 is transmitted to the pressure sensing monitoring device outside mine, and the displacement change numerical value of roof separation is converted by the pressure of pressure sensing unit 23 exerted on cantilever beam 221 by pressure sensing monitoring device, compared with the numerical value analyzed by fiber grating demodulator, after verification, the numerical value of fiber grating demodulator analysis and the numerical value of pressure sensing monitoring device are stored in the monitoring server of coal mine through coal mine ring network, to facilitate later inspection and observation.

[0037] Referring to Figure 1 And Figure 2 The core portion 12 of shell 1 includes top cover 121 and protective box 122, the conduit portion 11 is vertically connected above top cover 121, a circle of open slot 124 is arranged on the inside of protective box 122, the shape of open slot 124 is matched with the shape of top cover 121, sealing rubber ring 125 is arranged at the bottom of open slot 124, the sealing rubber ring 125 can improve the sealing property of shell 1, the air in the mine roadway is generally humid, and the dust generated in mining is also floating in the air, and the use of sealing rubber ring 125 can prevent water or dust from entering from the gap and damaging components. The top cover 121 is fixed on the upper end opening of protective box 122 by bolt.

[0038] Further, the top cover 121 and the protection box 122 form a placement bin 123, an installation groove 126 is arranged between the top cover 121 and the upper portion of the placement bin 123, the core component 2 further comprises an installation plate 24, the installation plate 24 is horizontally arranged in the placement bin 123 of the protection box 122, the light sensing unit 22 and the pressure sensing unit 23 are both fixed on the lower surface of the installation plate 24, the shape of the installation plate 24 is matched with the shape of the installation groove 126, the placement bin 123 is arranged with the installation groove 126 and the installation plate 24 to cooperatively install and fix the light sensing unit 22 and the pressure sensing unit 23, thereby reducing the use of bolts, which can reduce the cost to some extent, and facilitate disassembly and installation, and facilitate future repair and maintenance.

[0039] Referring to Figure 2 and Figure 3 , the light sensing unit 22 comprises a cantilever beam 221, the cantilever beam 221 comprises a connecting portion 222, a deformation portion 223 and a fixed portion 224, the cantilever beam 221 is parallel to the installation plate 24, the fixed portion 224 is connected with the installation plate 24 through a connecting piece, the connecting portion 222 is connected with the steel wire rope 21, when the roof separation displacement of the rock stratum corresponding to the anchoring of the steel wire rope 21 occurs, the displacement will drive the steel wire rope 21 to move upward or downward, the displacement is conducted to the cantilever beam 221 through the steel wire rope 21 passing through the connecting portion 222, the deformation portion 223 is connected between the connecting portion 222 and the fixed portion 224, a limiting groove 226 is arranged on the lower surface of the deformation portion 223, an optical fiber is arranged in the limiting groove 226, the optical fiber is connected with a fiber grating demodulator outside the roadway, when the deformation portion 223 of the cantilever beam 221 deforms, the optical fiber in the limiting groove 226 can be deformed, thereby causing the wavelength change of the grating in the optical fiber, the two ends of the limiting groove 226 are connected with the connecting portion 222 and the fixed portion 224, at least two positioning studs are arranged between the fixed portion 224 and the installation plate 24 to prevent the relative displacement of the cantilever beam 221 and the installation plate 24 from affecting the monitoring accuracy of the sensor.

[0040] Further, the connecting portion 222 is in the shape of a circular ring, the outer diameter size of the connecting portion 222 is greater than the minimum width size of the deformation portion 223, so that the deformation portion 223 can be more easily pulled, thereby improving the monitoring accuracy of the sensor.

[0041] Further, the steel wire rope 21 passes through the hole in the middle of the connecting portion 222, the lower end of the steel wire rope 21 is provided with a positioning pull ring 212, and a limiting block 211 is movably connected between the positioning pull ring 212 and the cantilever beam 221 on the steel wire rope 21. When the upper end of the steel wire rope 21 is anchored in the drilling of the roof of the roadway, the positioning pull ring 212 can be pulled to pull out the excess steel wire rope 21 until the steel wire rope 21 is in a straight force state, and then the position of the limiting block 211 on the steel wire rope 21 is adjusted to movably connect the limiting block 211 with the connecting portion 222 of the cantilever beam 221.

[0042] Further, the limiting block 211 is in the shape of a cone, and the maximum diameter of the limiting block 211 is greater than the diameter of the hole in the middle of the connecting portion 222. The limiting block 211 is prevented from directly passing through the hole in the connecting portion 222.

[0043] Further, the deformed portion 223 is in the shape of an isosceles trapezoid, the width of one end connected with the connecting portion 222 is small, the one end of the deformed portion 223 connected with the connecting portion 222 is more prone to deformation, thereby increasing the wavelength change amount of the optical fiber grating and improving the monitoring accuracy of the sensor, and the width of the other end connected with the fixed portion 224 is large, the overall strength of the deformed portion 223 is ensured, and the deformed portion 223 is prevented from being broken at the connection with the fixed portion 224.

[0044] Further, the overall material of the cantilever beam 221 is selected from spring steel, the spring steel has good metallurgical quality, surface quality, precise shape and size, is suitable for manufacturing the cantilever beam 221 which requires very strict standards and errors, and most importantly, the spring steel has very good anti-rebound performance, i.e., anti-elastic decline performance, also known as anti-relaxation performance. The cantilever beam 221 often needs to bear the tension of the steel wire rope 21 to deform, and the cantilever beam 221 made of spring steel can bear a certain load and restore to the original state after the load is removed, without permanent deformation.

[0045] Further, the pressure sensing unit 23 includes a pressure sensor 231, the pressure sensor 231 in the embodiment is arranged above the deformed portion 223 of the cantilever beam 221, the upper surface is fixedly connected with the mounting plate 24, one side of the deformed portion 223 facing the pressure sensor 231 is provided with a pressure synapse 225, the pressure synapse 225 is movably connected with the cantilever beam 221, the height of the protrusion of the pressure synapse 225 can be adjusted by rotating the adjusting bolt, thereby adjusting the pressure applied by the cantilever beam 221 in the unloaded state (i.e., at the 0 point) on the pressure sensor 231, and facilitating the zero adjustment operation of the pressure sensor 231.

[0046] Referring to Figure 1 , Figure 4 , Figure 5 and Figure 6The lower end of the conduit part 11 body is provided with a connecting disc 111, the diameter of the connecting disc 111 is larger than the diameter of the conduit part 11 body, and the connecting disc 111 is fixedly connected to the upper surface of the core part 12 by bolts. The conduit part 11 and the core part 12 are connected by bolts, which is easy to disassemble and assemble, and is convenient for transportation. On the other hand, after the sensor is installed and used, if daily maintenance or repair is needed, the connection between the core part 12 and the conduit part 11 can be released by rotating the bolts, and the core part 12 can be disassembled and repaired separately. The anchor of the sensor in the borehole in the roof of the roadway does not need to be released, which simplifies the repair steps and saves manpower and construction cost.

[0047] Further, the conduit part 11 is provided with a plurality of isolation core plates 112 parallel to the axis of the conduit part 11. The isolation core plate 112 in the embodiment is in the shape of a star, specifically a cross-shaped star. The isolation core plate 112 divides the space in the conduit part 11 body into four isolated cavities 113. The steel wire rope 21 passes through the corresponding isolated cavity 113 and is connected and anchored in the anchor jaw in the borehole. The multiple steel wire ropes 21 of the multi-measurement-point optical fiber roof separation sensor all pass through the same conduit part 11. If isolation is performed, the steel wire ropes 21 will inevitably collide with each other, thereby affecting the monitoring accuracy of the sensor, causing data distortion, and even false reporting of accidents. The use of the isolation core plate 112 can isolate the steel wire ropes 21 of multiple anchor points, avoid the mutual entanglement and contact of the steel wire ropes 21 of each core member 2, and improve the monitoring accuracy of the sensor and the accuracy of the prediction of roof separation accidents.

[0048] Further, the top end opening of the conduit part 11 is provided with a sealing plug 114, the upper end of the steel wire rope 21 is anchored in the drill hole through the sealing plug 114, the sealing plug 114 comprises a sealing part 115 and four connecting feet 116, the number of the connecting feet 116 corresponds to the number of the isolation cavities 113, the diameter of the sealing part 115 is not less than the outer diameter of the conduit part 11, so that the sealing part 115 can completely cover the conduit part 11 and play a sealing role, preventing the drill hole from falling into the core part 12, causing the core member 2 of the sensor to fail to work normally and shortening the overall service life. The connecting feet 116 are arranged on the lower surface of the sealing part 115, the shape of each connecting foot 116 is matched with the cross-sectional shape of the isolation cavity 113, the outer diameter of the connecting foot 116 is 0.3mm larger than the cross section of the isolation cavity 113, the sealing plug 114 is made of rubber and has a certain elasticity, the connecting feet 116 and the isolation cavities 113 of the conduit part 11 are connected in an interference manner, which can improve the sealing performance of the connection, further prevent foreign matter from entering the core part 12 from the conduit part 11 and damaging the sensor, and on the other hand, the interference connection can be fastened and also facilitate installation and disassembly, simplify the installation steps of the sensor, save the physical strength of the installation personnel and facilitate future disassembly, maintenance and repair.

[0049] Further, the outer side of the conduit part 11 is provided with a plurality of outwardly extending fixing hook feet 117, the fixing hook feet 117 of the embodiment are inclined downward by 50 degrees relative to the horizontal direction, the distal end of the fixing hook feet 117 is clamped into the inner wall of the drill hole of the roadway roof, and the sensor is anchored to prevent the sensor from falling off the roadway roof.

[0050] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or additions or substitutions within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A waterproof multi-measurement point optical fiber roof separation sensor based on 5G fusion technology, characterized in that, The utility model provides a kind of roof separation sensor, including shell (1) and several sets of core components (2), the shell (1) includes the conduit portion (11) of upper end and the core portion (12) of lower end, the conduit portion (11) is arranged in the borehole of roadway ceiling, is fixedly connected with hole wall, the lower end of the conduit portion (11) is vertically connected with the core portion (12) arranged outside borehole, the core component (2) of roof separation sensor is arranged in the core portion (12), the core component (2) includes steel wire rope (21), light sensing unit (22) and pressure sensing unit (23), the light sensing unit (22) includes cantilever beam (221) being provided with optical fiber, the steel wire rope (21) is anchored in the borehole of roadway from the upper end of conduit portion (11), and the lower end is connected with cantilever beam (221), and pressure sensing synapse (225) is arranged between cantilever beam (221) and pressure sensing unit (23) and is connected with contact, and the optical fiber on cantilever beam (221) is connected with fiber grating demodulator arranged outside roadway, and pressure sensing unit (23) is connected with pressure sensing monitoring device outside mine through 5G fusion technology; The core component further includes a mounting plate (24) horizontally disposed in the core portion (12), and the light sensing unit (22) and the pressure sensing unit (23) are both fixedly inverted on the lower surface of the mounting plate (24); The cantilever beam (221) includes a connecting portion (222), a deformation portion (223) and a fixed portion (224), the cantilever beam (221) and the mounting plate (24) are parallel to each other, the fixed portion (224) is connected with the mounting plate (24) through a connecting piece, the connecting portion (222) is connected with the steel wire rope (21), the deformation portion (223) is connected between the connecting portion (222) and the fixed portion (224), and the lower surface of the deformation portion (223) is provided with a limiting groove (226) in which an optical fiber is arranged, and the optical fiber is connected with the fiber grating demodulator outside the roadway; The pressure sensing unit (23) includes a pressure sensor (231), the pressure sensor (231) is arranged above the deformation portion (223) of the cantilever beam (221), and the upper surface thereof is fixedly attached to the mounting plate (24), and the side of the deformation portion (223) facing the pressure sensor (231) is provided with a pressure sensing synapse (225), and the pressure sensing synapse (225) is movably connected to the cantilever beam (221) through a bolt.

2. The waterproof multi-measurement point optical fiber roof separation sensor based on 5G fusion technology according to claim 1, characterized in that, The connecting portion (222) has a circular ring shape, and the outer diameter of the connecting portion (222) is greater than the minimum width of the deformation portion (223). 3.The waterproof multi-measurement point optical fiber roof separation sensor based on 5G fusion technology according to claim 2, characterized in that, The steel wire rope (21) passes through a hole in the middle of the connecting portion (222), and a positioning ring (212) is arranged at the lower end of the steel wire rope (21), and a limiting block (211) is movably connected between the positioning ring (212) and the cantilever beam (221) on the steel wire rope (21).

4. The waterproof multi-measurement point optical fiber roof separation sensor based on 5G fusion technology according to claim 3, characterized in that, The limiting block (211) has a conical shape, and the maximum diameter of the limiting block (211) is greater than the diameter of the hole in the middle of the connecting portion (222). 5.The waterproof multi-measurement point optical fiber roof separation sensor based on 5G fusion technology according to claim 1, characterized in that, The shape of the deformation part (223) comprises an isosceles trapezoid, the width of one end connected with the connecting part (222) is small, and the width of one end connected with the fixing part (224) is large. 6.The waterproof multi-measurement point optical fiber roof separation sensor based on 5G fusion technology according to claim 5, characterized in that, The overall material of the cantilever beam (221) is spring steel. 7.The waterproof multi-measurement point optical fiber roof separation sensor based on 5G fusion technology according to claim 6, characterized in that, A plurality of isolation core plates (112) parallel to the axis of the conduit part (11) are arranged in the conduit part (11), the isolation core plates (112) divide the space in the body of the conduit part (11) into a plurality of isolated cavities (113), the steel wire rope (21) passes through the corresponding isolated cavity (113) and is connected with an anchor claw anchored in a borehole.

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