CN107860462A - A kind of more cantilever beam all insulation material optical fiber raster vibration sensors - Google Patents
A kind of more cantilever beam all insulation material optical fiber raster vibration sensors Download PDFInfo
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- CN107860462A CN107860462A CN201711400978.7A CN201711400978A CN107860462A CN 107860462 A CN107860462 A CN 107860462A CN 201711400978 A CN201711400978 A CN 201711400978A CN 107860462 A CN107860462 A CN 107860462A
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- mass
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- cantilever beam
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H9/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
- G01H9/004—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means using fibre optic sensors
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- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
A kind of all insulation material optical fiber raster vibration sensor of more cantilever beams of the present invention, including vibration sensing system, base and top cover.Vibration sensing system is made up of mass, four equal length cantilever beams and the frame that is connected with cantilever beam.Mass is connected by four thin slice cantilever beams with frame, is held up and suspended by cantilever beam.The raised quadrangular of the height such as four is set at four angles of sensor base, vibrating sensor placed wherein, the frame of sensor is just stuck in four prismatic surfaces, and vibrating sensor is just able to be suspended in base.When sensor experiences vibration, mass drives cantilever beam to vibrate together, and the grating wavelength pasted on mass is changed, and vibration frequency can be measured according to its variable quantity.By four cantilever beam fixed mass blocks, strengthen its antijamming capability, suppress the generation of high order mode resonance, can delicately detect vibration signal, and there is good insulation effect due to the insulating properties of nonmetallic materials.
Description
Technical field
The invention belongs to Fiber Grating Sensors Technology, especially a kind of more cantilever beam all insulation material optical fiber raster vibrations
Sensor construction technology.
Background technology
At present, in Fiber Grating Sensors Technology field, the vibrating sensor that we are touched is more from material
It is made for metal material, the mostly single cantilever beam structure from structure.For the sensor of metal material, it is developed to
The present, have been obtained for being widely applied in the industry.However, when in face of a kind of building ring with highfield of high voltage electric equipment
During border, metal vibration sensor easily causes the electric discharge phenomena in subrange.Insulation of the shelf depreciation to equipment each time is situated between
Matter can all have some influences.This is a key factor for damaging high voltage electric equipment insulating properties.For single cantilever beam structure
Vibrating sensor, its cantilever beam both easily produces amount of deflection, and easily produces corner under load effect, and anti-twisting property
Difference, this have impact on the performance of set flowmeter sensor to a certain extent.
The content of the invention
The defects of the invention aims to overcome above-mentioned prior art to exist and to provide a kind of more cantilever beams nonmetallic
Vibrating sensor, this cantilever beam structure can prevent cantilever beam from producing amount of deflection and corner, and have very strong anti-twisting property,
So as to suppress the generation of high order mode resonance.More cantilever beam structures can overcome the problem of traditional single cantilever beam structure so that
Four cantilever beam ends are in the presence of load by the approximate vibration for producing the single degree of freedom.The present invention both has good insulation
Property, there is very strong antijamming capability again.
The object of the present invention is achieved like this：A kind of more cantilever beam all insulation material optical fiber raster vibration sensors, it is special
Sign is, including the base of a rectangular box, the Seismosensitive element being connected in base and the top cover being sealed on base；
Wherein, Seismosensitive element includes a cuboid mass (1), is symmetrically connected to four equal lengths in (1) four face of mass
Cantilever beam (3) and ring connect the frame (4) of four cantilever beams (3)；Four angles in base are distributed with four and wait height
Raised quadrangular (6) and offer connecting hole (6.1), perforation (4.1) is offered on four angles of frame (4), perforate
(4.1) connection corresponding with connecting hole (6.1), realizes the suspension of mass (1), and four are also equipped with top cover corner and waits height
Quadrangular projection (7), four prism projections (7) are docked with four prisms (6) of base；On a plane of symmetry both sides of base
Centre position offers an opening (6.2)；A raised nubs (2), its surface and base edge are provided with above mass (1)
On opening (6.2) bottom level it is identical, grating (8) tense stick between raised nubs (2) and opening (6.2), optical fiber (9) is adopted
Protected with one layer of inner sleeve (10) and one layer of outer tube (11).
The present invention is located at below opening (6.2) place in base edge wall is provided with raised (5), is pasted for increasing with grating
Surface area.
The length, width and height size of four cantilever beams (3) of the invention is identical and in the four edges of mass (1) bottom surface
Point.
The structure of the present invention can be divided into three parts, be vibration sensing system, base and top cover respectively.Vibration sensing system
It is made up of mass, four equal length cantilever beams and the frame that is connected with cantilever beam.Mass is made into integration with cantilever beam, nothing
Need to paste, the problem of so as to avoid influenceing vibrating effect because of loosening.Mass is connected by four thin slice cantilever beams with frame,
Held up and suspended by cantilever beam.The raised quadrangular of the height such as four is set at four angles of sensor base, by vibrating sensor
Place wherein, the frame of sensor is just stuck in four prismatic surfaces, and mass is just able to be suspended in base.The top of sensor
It is raised that the height quadrangulars such as four are also provided with lid corner, top cover are covered on base, four prism projection inserted bases, the bottom of with
Four prisms docking of seat, the frame of vibrating sensor are tightly sandwiched in centre.Have a raised nubs above mass, surface with
Open height on base edge is identical, and grating is tensed and sticked between 2 points.When sensor experiences vibration, mass band
Dynamic cantilever beam is vibrated together, and grating wavelength changes, and vibration signal can be measured according to its variable quantity.In this structure,
Equivalent to four supports of four cylinders of sensor base, the effect of balanced support can be played to sensor-based system.Four on top cover
Root cylinder up tightly pushes down vibration sensing system, can prevent to produce the phenomenon of loosening because of vibration.Mass is designed as
Upper bottom surface is all the cylinder of square, and the cantilever beam of four equal lengths is respectively positioned at the midpoint on four bases, and four outstanding
Arm beam is located at sustained height, so both can guarantee that mass kept suspended state, and can ensures that four cantilever beam stress are identical.Greatly
The earth improves the stability and accuracy of measurement.
The present invention is that can measure the vibrating sensor of object vibration frequency, simple in construction, easy for installation, can be severe
In the environment of carry out remote real time monitoring, meanwhile, improved a lot in terms of the stability of measurement, sensitivity and accuracy.
In summary, the beneficial effects of the invention are as follows：
1st, the sensor is the vibrating sensor of nonmetallic materials, and material selection nylon (PA), this material belongs to renewable
The energy, easy to process and cost is low, therefore can simplify procedure from such a material, and and can reduces cost, most important
It is that this material also has good insulating properties.
2nd, the mass of the sensor and cantilever beam, which make, is integrated, and removes stickup from, can prevent loosening problem.Mass
Fixed by four equi intensity cantilevers, this structure can prevent cantilever beam from producing amount of deflection and corner, and resist with very strong
Torsion ability, so as to suppress the generation of high order mode resonance.More cantilever beam structures can overcome asking for traditional single cantilever beam structure
Topic so that four cantilever beam ends are in the presence of load by the approximate vibration for producing the single degree of freedom.It is it follows that of the invention
Both there is good insulating properties, there is very strong antijamming capability again.
Brief description of the drawings
Fig. 1 is the mounting structure schematic diagram of vibrating sensor of the present invention；
Fig. 2 is vibrating sensor mass-cantilever beam structure schematic diagram of the present invention；
Fig. 3 is the structural representation of vibrating sensor base of the present invention；
Fig. 4 is the top cover schematic diagram of vibrating sensor of the present invention.
Embodiment
The structure of the present invention is clearly fully described by below in conjunction with the accompanying drawings.
See Fig. 1, a kind of more cantilever beam all insulation material optical fiber raster vibration sensors, include the bottom of a rectangular box
Seat, the Seismosensitive element being connected in base and the top cover being sealed on base；Wherein, Seismosensitive element includes a rectangle
Constitution gauge block 1, four equal length cantilever beams 3 for being symmetrically connected to 1 four faces of mass and ring connect the side of four cantilever beams 3
Frame 4；Four angles in base are distributed with the raised quadrangular 6 of the height such as four and offer connecting hole 6.1, in frame 4
Four angles on offer perforation 4.1, perforation 4.1 is corresponding with connecting hole 6.1 to be connected, and the suspension of mass 1 is realized, in top cover four
The height quadrangular projections 7 such as four are also equipped with angle, four prism projections 7 are docked with four prisms 6 of base；In base
Plane of symmetry both sides centre position offer an opening 6.2；A raised nubs 2, its surface are provided with above mass 1
Identical with the bottom level of opening 6.2 on base edge, grating 8, which tenses, to be sticked between raised nubs 2 and opening 6.2, and optical fiber 9 is adopted
Protected with one layer of inner sleeve 10 and one layer of outer tube 11.
The present invention is provided with projection 5 below base edge wall is located at opening 6.2, for increasing the table pasted with grating
Area.
The length, width and height size of four cantilever beams (3) of the invention is identical and is located at the midpoint of the bottom surface four edges of mass 1.
In fig. 2, upper bottom surface is connected for the cylinder mass 1 of square by four thin slice cantilever beams 3 with frame 4,
Suspension is held up by cantilever beam 3.Mass 1, cantilever beam 3 and the bottom surface of frame 4 are in sustained height.The length and width and thickness of cantilever beam 3
It is proportional to the length, width and height of mass 1.The length of cantilever beam 3 is the half of the length of side of mass 1, and the width of cantilever beam 3 is quality
/ 7th of the length of side of block 1.The thickness of cantilever beam 3 is 1/8th of the thickness of mass 1.One is set at the upper surface center of mass 1
Projection 2, for pasting grating.In figure 3, four angles of sensor base set the raised quadrangular 6 of the height such as four, will shake
Dynamic sensor is placed wherein, and the frame of sensor is just stuck in four surfaces of prism 6, is supported by four prisms 6, vibrating sensor
Just it is able to be suspended in base.Because sensor base edge is relatively thin, it is unfavorable for viscous grating, thus it is convex in edge wall setting two
The surface area that 5 increases are pasted with grating is played, the upper surface of projection 5 is identical with the upper level of the projection 2 above mass.Will
Grating tenses and sticks at Liang Chu.Two raised top is all provided with two openings, and when gluing grating, ferrule is just placed on herein.Originally make
Two output ports are provided with new, heat transfer agent can be read, when there is one end failure, can also be examined by another port
Measurement information.In Fig. 4, the height quadrangular projections 7 such as four are also provided with the top cover corner of sensor, top cover is covered in base
On, raised 7 inserted bases of four prisms, docked with four prisms 6 of base, the frame of vibrating sensor is tightly sandwiched in centre.
In the corner of sensor, by four quadrangulars, four screw holes are got, are fixed on three parts of the present invention by screw
Together.There are a raised nubs 2 top of mass 1, and surface is identical with the open height on base edge, and grating is tensed and sticked at
Between 2 points.When sensor experiences vibration, mass 1 drives cantilever beam 3 to vibrate together, and grating wavelength changes, root
Vibration signal can be measured according to its variable quantity.
Present invention material selection first is nylon, and scientific name Fypro (PA), nylon is a kind of degradable thermoplastic
Property resin material.This raw material mechanical performance and physical property are good, easy to process, are widely used and have good insulating properties.
Claims (3)
- A kind of 1. more cantilever beam all insulation material optical fiber raster vibration sensors, it is characterised in that including rectangular box Base, the Seismosensitive element being connected in base and the top cover being sealed on base；Wherein, Seismosensitive element includes a square Body mass (1), four equal length cantilever beams (3) for being symmetrically connected to (1) four face of mass and ring connect four and hanged The frame (4) of arm beam (3)；Four angles in base are distributed with the raised quadrangular (6) of the height such as four and the company of offering Hole (6.1) is connect, perforation (4.1) is offered on four angles of frame (4), perforation (4.1) is corresponding with connecting hole (6.1) to be connected, The suspension of mass (1) is realized, the height quadrangulars projections (7) such as four are also equipped with top cover corner, four prisms are convex (7) are played to dock with four prisms (6) of base；An opening (6.2) is offered in the plane of symmetry both sides centre position of base； A raised nubs (2) is provided with above mass (1), its surface is identical with opening (6.2) bottom level on base edge, Grating (8) is tensed and sticked between raised nubs (2) and opening (6.2), and optical fiber (9) uses one layer of inner sleeve (10) and one layer of overcoat Manage (11) protection.
- A kind of 2. more cantilever beam all insulation material optical fiber raster vibration sensors according to claim 1, it is characterised in that It is located in base edge wall below opening (6.2) place and is provided with raised (5), for increases the surface area pasted with grating.
- A kind of 3. more cantilever beam all insulation material optical fiber raster vibration sensors according to claim 1, it is characterised in that The length, width and height size of four cantilever beams (3) is identical and is located at the midpoint of mass (1) bottom surface four edges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711400978.7A CN107860462A (en) | 2017-12-19 | 2017-12-19 | A kind of more cantilever beam all insulation material optical fiber raster vibration sensors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711400978.7A CN107860462A (en) | 2017-12-19 | 2017-12-19 | A kind of more cantilever beam all insulation material optical fiber raster vibration sensors |
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| Publication Number | Publication Date |
|---|---|
| CN107860462A true CN107860462A (en) | 2018-03-30 |
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| CN201711400978.7A Pending CN107860462A (en) | 2017-12-19 | 2017-12-19 | A kind of more cantilever beam all insulation material optical fiber raster vibration sensors |
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Cited By (4)
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| CN109060107A (en) * | 2018-11-01 | 2018-12-21 | 北京航空航天大学 | A kind of high temperature resistant Multi-Axis Fiber Bragg Gratings vibrating sensor |
| CN110567572A (en) * | 2019-10-12 | 2019-12-13 | 山东省科学院激光研究所 | Optical fiber laser microseismic detector with combined structure |
| CN113324632A (en) * | 2020-11-10 | 2021-08-31 | 西北工业大学 | Optical fiber weighing sensor |
| CN114046763A (en) * | 2021-11-10 | 2022-02-15 | 中航动力株洲航空零部件制造有限公司 | Symmetry measuring tool |
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| CN103278845A (en) * | 2013-06-28 | 2013-09-04 | 西北大学 | Fiber grating earthquake acceleration detector based on combined type cantilever structure |
| CN103293337A (en) * | 2013-05-15 | 2013-09-11 | 中北大学 | Wireless passive capacitive accelerometer |
| CN104483008A (en) * | 2014-12-09 | 2015-04-01 | 西安石油大学 | Fiber grating three-dimensional vibration sensor |
| WO2016029814A1 (en) * | 2014-08-25 | 2016-03-03 | 同方威视技术股份有限公司 | Fibre bragg grating vibration sensor and vibration measurement element thereof |
| CN106814216A (en) * | 2017-01-24 | 2017-06-09 | 武汉理工大学 | The round flexible hinge optical fibre grating acceleration sensor of Integral direct |
| CN106841679A (en) * | 2017-01-11 | 2017-06-13 | 浙江大学 | The high accuracy MOEMS accelerometer of anti-large impact |
| CN207570661U (en) * | 2017-12-19 | 2018-07-03 | 云南电网有限责任公司昭通供电局 | A kind of more cantilever beam all insulation material optical fiber raster vibration sensors |
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| CN103293337A (en) * | 2013-05-15 | 2013-09-11 | 中北大学 | Wireless passive capacitive accelerometer |
| CN103278845A (en) * | 2013-06-28 | 2013-09-04 | 西北大学 | Fiber grating earthquake acceleration detector based on combined type cantilever structure |
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| CN207570661U (en) * | 2017-12-19 | 2018-07-03 | 云南电网有限责任公司昭通供电局 | A kind of more cantilever beam all insulation material optical fiber raster vibration sensors |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109060107A (en) * | 2018-11-01 | 2018-12-21 | 北京航空航天大学 | A kind of high temperature resistant Multi-Axis Fiber Bragg Gratings vibrating sensor |
| CN110567572A (en) * | 2019-10-12 | 2019-12-13 | 山东省科学院激光研究所 | Optical fiber laser microseismic detector with combined structure |
| CN110567572B (en) * | 2019-10-12 | 2021-06-29 | 山东省科学院激光研究所 | Optical fiber laser microseismic detector with combined structure |
| CN113324632A (en) * | 2020-11-10 | 2021-08-31 | 西北工业大学 | Optical fiber weighing sensor |
| CN113324632B (en) * | 2020-11-10 | 2023-01-24 | 西北工业大学 | Optical fiber weighing sensor |
| CN114046763A (en) * | 2021-11-10 | 2022-02-15 | 中航动力株洲航空零部件制造有限公司 | Symmetry measuring tool |
| CN114046763B (en) * | 2021-11-10 | 2023-11-21 | 湖南星途航空航天器制造有限公司 | Symmetry measuring tool |
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