阅读说明：本技术 一种分布式光纤传感器 (Distributed optical fiber sensor ) 是由 刘晓航 刘益民 于 2019-04-22 设计创作，主要内容包括：本发明公开一种分布式光纤传感器,包括基板和光纤传感,所述基板呈等腰梯形体状设置,所述基板上表面设置有与传感光纤相配对的封装槽形成封装面,所述封装面上设置有气泡水平仪,所述气泡水平仪嵌入于基板设置,所述光纤传感封装在封装槽内,所述基板下表面设置有用于与探测物体接触的铝蜂窝板,所述铝蜂窝板与基板固定连接,所述基板两侧均设置有用于吸附住被测物体的连接装置；该分布式光纤传感器在使用过程中不易出现折断的现象。(The invention discloses a distributed optical fiber sensor, which comprises a substrate and optical fiber sensors, wherein the substrate is arranged in an isosceles trapezoid shape, the upper surface of the substrate is provided with a packaging groove matched with a sensing optical fiber to form a packaging surface, the packaging surface is provided with a bubble level meter, the bubble level meter is embedded into the substrate, the optical fiber sensors are packaged in the packaging groove, the lower surface of the substrate is provided with an aluminum honeycomb panel used for contacting with a detected object, the aluminum honeycomb panel is fixedly connected with the substrate, and two sides of the substrate are respectively provided with a connecting device used for adsorbing the detected object; the distributed optical fiber sensor is not easy to break off in the using process.)

1. A distributed fiber optic sensor, comprising: the optical fiber sensing device comprises a substrate and an optical fiber sensor, wherein the substrate is in an isosceles trapezoid shape, a packaging groove matched with a sensing optical fiber is formed in the upper surface of the substrate to form a packaging surface, a bubble level meter is arranged on the packaging surface and embedded into the substrate, the optical fiber sensor is packaged in the packaging groove, an aluminum honeycomb plate used for being in contact with a detected object is arranged on the lower surface of the substrate, the aluminum honeycomb plate is fixedly connected with the substrate, connecting devices used for adsorbing the detected object are arranged on two sides of the substrate, and the substrate is composed of 11-14 parts of hydroxypropyl acrylate, 3-5 parts of aluminum stearate, 6-8 parts of erucamide, 4-6 parts of triaryl phosphate ester, 3-dimethyl-2-imidazolidinone, 2-6 parts of stannous chloride, 2-6 parts of tin sulfate, 3-7 parts of acrylic acid, 3-5 parts of aluminum, 158 parts of phenolic resin 133-one, 33-77 parts of nitrile rubber, 2-4 parts of sodium benzene sulfinate, 15-20 parts of four-needle zinc oxide whisker, 11-13 parts of mica powder, 3-5 parts of hexamethylenetetramine, 10-20 parts of nano calcium carbonate, 8-10 parts of alum, 10-12 parts of sodium bicarbonate and 3-7 parts of magnesium nitride.

2. A distributed fibre optic sensor as claimed in claim 1 wherein: the base plate one end is provided with the rectangle tenon, base plate and rectangle tenon formula as an organic whole set up, the base plate other end is provided with the mortise that pairs with the rectangle tenon.

3. A distributed fibre optic sensor as claimed in claim 2 wherein: the aluminum honeycomb panel upper surface is provided with the forked tail tenon, the forked tail tenon bonds with the aluminum honeycomb panel, be provided with the dovetail that pairs with the forked tail tenon on the base plate, base plate and aluminum honeycomb panel pass through forked tail tenon and dovetail fixed connection.

4. A distributed fibre optic sensor as claimed in claim 3 wherein: be provided with rubber gasket between base plate and the aluminum honeycomb panel, be provided with on the rubber gasket and mate the perforation with the forked tail tenon, the forked tail tenon passes the perforation and is provided with, rubber gasket passes through the forked tail tenon and perforates and can dismantle with the aluminum honeycomb panel and be connected.

5. A distributed fibre optic sensor as claimed in claim 4 wherein: the connecting device comprises a connecting rod and a vacuum chuck, the connecting rod is fixedly connected with the vacuum chuck, a blind hole is formed in the side face of the substrate, an opposite-top wave spring is arranged in the blind hole, one end of the opposite-top wave spring is fixedly connected with the bottom of the blind hole, and the other end of the opposite-top wave spring is welded with the connecting rod.

6. A distributed fibre optic sensor as claimed in claim 5 wherein: the packaging groove is provided with more than one, and the packaging grooves are arranged in parallel.

7. A distributed fibre optic sensor as claimed in claim 6 wherein: and weight reduction grooves are formed in both sides of the base plate.

Technical Field

The invention relates to a distributed optical fiber sensor.

Background

Distributed fiber optic sensors are sensors that use unique distributed fiber optic detection techniques to measure or monitor spatially distributed and time varying information along a fiber optic transmission path. The sensing optical fiber is arranged along the field, and the information of the spatial distribution and the change with time of the measured field can be simultaneously obtained, so that the method has a plurality of attractions for a plurality of industrial applications.

However, in the prior art, when the distributed optical fiber sensor is used, the sensing optical fiber is directly welded on the surface of the object to be measured in a welding manner, and since the sensing optical fiber in the distributed optical fiber sensor is long, the sensing optical fiber is easily broken in the using process, and thus the measurement is interrupted, the measurement time is affected, and the measurement cost is greatly increased.

Disclosure of Invention

The invention aims to provide a distributed optical fiber sensor which is not easy to break off in the using process.

In order to solve the problems, the invention adopts the following technical scheme:

a distributed optical fiber sensor comprises a substrate and optical fiber sensors, wherein the substrate is arranged in an isosceles trapezoid shape, a packaging groove matched with sensing optical fibers is formed in the upper surface of the substrate to form a packaging surface, a bubble level meter is arranged on the packaging surface and embedded into the substrate, the optical fiber sensors are packaged in the packaging groove, an aluminum honeycomb panel used for being in contact with a detected object is arranged on the lower surface of the substrate, the aluminum honeycomb panel is fixedly connected with the substrate, and connecting devices used for adsorbing the detected object are arranged on two sides of the substrate;

the substrate is composed of 11-14 parts of hydroxypropyl acrylate, 3-5 parts of aluminum stearate, 6-8 parts of erucamide, 4-6 parts of triaryl phosphate, 3-7 parts of 1, 3-dimethyl-2-imidazolidinone, 2-6 parts of stannous chloride, 158 parts of phenolic resin 133-doped materials, 33-77 parts of nitrile rubber, 2-4 parts of sodium benzene sulfinate, 15-20 parts of tetrapod-shaped zinc oxide whisker, 11-13 parts of mica powder, 3-5 parts of hexamethylenetetramine, 10-20 parts of nano calcium carbonate, 8-10 parts of alum, 10-12 parts of sodium bicarbonate and 3-7 parts of magnesium nitride according to the weight part ratio.

Preferably, base plate one end is provided with the rectangle tenon, base plate and rectangle tenon formula as an organic whole set up, the base plate other end is provided with the mortise that pairs with the rectangle tenon, through being provided with tenon and mortise, can conveniently supply the user to adopt a plurality of base plates to jointly use.

Preferably, the upper surface of the aluminum honeycomb panel is provided with a dovetail, the dovetail is bonded with the aluminum honeycomb panel, the base plate is provided with a dovetail groove matched with the dovetail, the base plate and the aluminum honeycomb panel are fixedly connected through the dovetail and the dovetail groove, the connection structure of the aluminum honeycomb panel and the base plate is simple, the base plate and the aluminum honeycomb panel are mutually combined and mutually supported, and the stress stability is good.

Preferably, be provided with rubber gasket between base plate and the aluminum honeycomb panel, rubber gasket stacks up and is provided with the perforation of mating with the forked tail, the forked tail passes the perforation and is provided with, rubber gasket passes through the forked tail and perforates and can dismantle with the aluminum honeycomb panel and be connected, through be provided with rubber gasket between base plate and aluminum honeycomb panel, can play good cushioning effect, prevents that vibrations from causing great influence to optic fibre.

As preferred, connecting device includes connecting rod and vacuum chuck, connecting rod and vacuum chuck fixed connection, open the base plate side has the blind hole, be provided with opposite vertex wave spring in the blind hole, opposite vertex wave spring one end and the hole bottom fixed connection of blind hole, the opposite vertex wave spring other end and connecting rod welding, connecting device simple structure, the cooperation is used opposite vertex wave spring, can effectually make base plate and testee hug closely early together.

Preferably, the number of the packaging grooves is more than one, and the packaging grooves are arranged in parallel.

Preferably, the two sides of the base plate are provided with lightening grooves, so that the overall weight can be effectively reduced, and the burden of the vacuum chuck is lightened.

The preparation method of the substrate comprises the following steps:

1) pouring the 133-158 parts of phenolic resin and 33-77 parts of nitrile rubber into a crusher for crushing treatment, and crushing the phenolic resin and the nitrile rubber to 325-400 meshes to prepare mixed powder for later use;

2) pouring 11-14 parts of hydroxypropyl acrylate, 3-5 parts of aluminum stearate, 6-8 parts of erucamide, 4-6 parts of triaryl phosphate, 3-7 parts of 1, 3-dimethyl-2-imidazolidinone, 2-6 parts of stannous chloride, 2-4 parts of sodium benzene sulfinate, 15-20 parts of tetrapod-like zinc oxide whisker, 11-13 parts of mica powder, 3-5 parts of hexamethylenetetramine, 10-20 parts of nano calcium carbonate, 8-10 parts of alum, 10-12 parts of sodium bicarbonate, 3-7 parts of magnesium nitride and the mixed powder prepared in the step 1) into a three-dimensional motion mixer for mixing treatment, wherein the rotating speed of a main shaft of the three-dimensional motion mixer during mixing treatment is 12-15r/min, the mixing time is 2-4h, preparing a mixed material, standby;

3) heating the mold, injecting the mixture, fixing the mold on the heating plate at 40-80Mpa at 200 deg.C for 20-30min, cooling, and demolding to obtain the substrate.

The following are the characteristics or effects of the raw materials of the substrate:

hydroxypropyl acrylate: can be used as modifier for producing adhesive, thermosetting coating, fiber treating agent and synthetic resin copolymer, and can improve the adhesion, weather resistance, chemical resistance, impact resistance and luster of the product.

Aluminum stearate: heat stabilizers and lubricants.

Erucamide: has high melting point and good thermal stability, and can be used as anti-sticking agent and slip agent for various plastics and resins.

Triaryl phosphate ester: is a phosphate phosphorus series flame retardant which can be used as the flame retardant of the composite board.

1, 3-dimethyl-2-imidazolidinone: can promote the mixing of raw materials and catalysts, improve the chemical property, the thermal property and the mechanical property of the polymer, and can effectively improve the overall mechanical property by compounding with hydroxypropyl acrylate.

Stannous chloride: the phenolic resin is used as an accelerator for phenolic resin and nitrile rubber, and the vulcanization of the nitrile rubber by the phenolic resin is promoted. In the curing process, rubber molecules penetrate through the network of the phenolic resin to form a typical interpenetrating network structure, so that good toughness is obtained.

Phenolic resin: has good acid resistance, mechanical property and heat resistance.

Nitrile rubber: the rubber has the advantages of excellent oil resistance, higher wear resistance, better heat resistance, strong bonding force, good chemical resistance and good processability.

Sodium benzene sulfinate: polymeric adhesion enhancers for the plasticization and modification of phenolic resins.

Tetrapod-like zinc oxide whiskers: the three-dimensional crystal structure is dispersed in a matrix to play a role of a framework, the unique three-dimensional space structure enables the gripping force of the matrix to be larger, the reinforcing effect is more obvious, the tensile strength is obviously increased, the transverse and longitudinal tensile strength values are basically the same, the mechanical property of the matrix material is isotropically reinforced, the matrix strength and the processing property are obviously improved, and the three-dimensional crystal structure can be compounded with stannous chloride to form a typical interpenetrating network structure to obtain extremely excellent toughness.

Mica powder: has good elasticity and toughness. The additive has the characteristics of insulativity, high temperature resistance, acid and alkali resistance, corrosion resistance, strong adhesive force and the like, and is an excellent additive.

Hexamethylenetetramine: white hygroscopic crystalline powder or colorless glossy rhombohedral crystals, which are mainly used as curing agents for resins and plastics.

Nano calcium carbonate: can improve the rheological property of the plastic master batch and improve the moldability of the plastic master batch. The aluminum stearate/1, 3-dimethyl-2-imidazolidinone composite material has the functions of toughening and reinforcing, improves the bending strength and the bending elastic modulus of plastics, the thermal deformation temperature and the dimensional stability of the plastics, endows the plastics with heat hysteresis, and can effectively improve the heat resistance by compounding with the aluminum stearate and the 1, 3-dimethyl-2-imidazolidinone.

Alum: colorless transparent bulk crystal or crystalline powder, no odor, slightly sweet and sour and astringent taste, and can be used as foaming promoter to uniformly generate pores in combination with sodium bicarbonate.

Sodium bicarbonate: the solid is gradually decomposed at 50 deg.C to generate sodium carbonate, carbon dioxide and water, and is completely decomposed at 270 deg.C to serve as foaming agent.

Magnesium nitride: is an inorganic compound consisting of nitrogen and magnesium, belongs to a cubic crystal system, has a synergistic effect with sodium bicarbonate, can consume water generated during the decomposition of the sodium bicarbonate, generates ammonia gas and has an auxiliary foaming effect.

The invention has the beneficial effects that: through encapsulating the optic fibre sensing in the encapsulation inslot of base plate, can effectually prevent that sensing optic fibre among the distributed optical fiber sensor from being broken or damaging in the use, in addition, base plate one end is provided with the rectangle tenon, and base plate and rectangle tenon formula as an organic whole set up, and the base plate other end is provided with the mortise that pairs mutually with the rectangle tenon, through being provided with tenon and mortise, can conveniently supply the user to adopt a plurality of base plates jointly to use. Aluminium honeycomb panel upper surface is provided with the dovetail, and the dovetail bonds with aluminium honeycomb panel, is provided with the dovetail of mating mutually with the dovetail on the base plate, and base plate and aluminium honeycomb panel pass through dovetail and dovetail fixed connection, and aluminium honeycomb panel and base plate connection simple structure, base plate and aluminium honeycomb panel combine mutually moreover, support mutually, and the force stability is good. Be provided with rubber gasket between base plate and the aluminum honeycomb panel, rubber gasket is provided with on the cushion and is paired perforation with the forked tail tenon, and the forked tail tenon passes the perforation and is provided with, and rubber gasket passes through the forked tail tenon and perforates and can dismantle with the aluminum honeycomb panel and be connected, through be provided with rubber gasket between base plate and aluminum honeycomb panel, can play good cushioning effect, prevents that vibrations from causing great influence to optic fibre. Connecting device includes connecting rod and vacuum chuck, connecting rod and vacuum chuck fixed connection, and open the base plate side has the blind hole, is provided with opposite vertex wave spring in the blind hole, opposite vertex wave spring one end and the hole bottom fixed connection of blind hole, and the opposite vertex wave spring other end welds with the connecting rod, and connecting device simple structure, cooperation opposite vertex wave spring use, can effectually make the base plate hug closely early together with the measured object.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a cross-sectional view of a distributed fiber optic sensor according to the present invention.

Fig. 2 is a partial cross-sectional view of a distributed fiber optic sensor according to the present invention.

In the figure:

1. a substrate; 2. sensing by an optical fiber; 3. a packaging groove; 4. packaging the surface; 5. a bubble level; 6. an aluminum honeycomb panel; 7. a connecting device; 8. mortises; 9. dovetail joints; 10. a shock-absorbing rubber pad; 11. a weight reduction groove; 12. a connecting rod; 13. a vacuum chuck; 14. opposite-vertex wave spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the embodiments, it should be understood that the terms "middle", "upper", "lower", "top", "right", "left", "above", "back", "middle", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention, and do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the present embodiment, if the connection or fixing manner between the components is not specifically described, the connection or fixing manner may be a conventional manner such as bolt fixing, pin shaft connecting, adhesive fixing, or rivet fixing, which is commonly used in the prior art, and therefore, the detailed description thereof will not be provided in the examples.