201results about How to "Highly adjustable" patented technology

A display device having a multi-view display panel (45) for displaying, on the common screen, individual images for more than one viewing direction and having image quality adjustment circuits (41, 42) for individually adjusting the quality of an image corresponding to each of the individual images.

The invention discloses a preparation method of a sustained-release water reducer microcapsules which belong to the technical field of building material additives. By miniemulsion inverse phase polymerization, common water reducer molecules undergo microencapsulation and the water reducer microcapsules which have a pH response function are synthesized. After polymerization is finished, the microcapsules are in an acidic condition. due to the existence of capsule shells, the water reducer molecules can stably stay in the microcapsules. After the microcapsules are mixed with cement, cement concrete is strongly alkaline and the microcapsules perform a response-stimulus behavior under a high pH condition. Large molecular chains of the capsule shells rapidly expand and extend so as to generatethe swelling phenomenon. The compact shell layer becomes loose, and the cladded water reducer molecules slowly release such that the concentration of the water reducer is always high in the cement concrete. Therefore, the fluidity etentivity with time of the water reducer can be raised, and the collapsed slump loss of cement concrete in practical engineering usage can be prevented.

The invention discloses a prestressed concrete pipe pile horizontal bearing characteristic test model and a test method. The prestressed concrete pipe pile horizontal bearing characteristic test model comprises a model groove, a bearing table used for bearing a model pile is arranged in the model groove, and the upper end of the model pile is embedded into the bearing table. A vertical pneumatic loading system exerting vertical force on the bearing table and connected with a counter force frame is arranged above the model groove. The inner side of the model groove is provided with a horizontal pneumatic loading system exerting horizontal force on the bearing table and connected with the model groove. Monitoring devices are arranged on the bearing table, the model pile and the loading system. The invention provides a test device which can well meet the requirement for load conditions of a pile foundation load test, simulate the practical working conditions of the pile foundation more truly and detect the bearing characteristics of a single pipe pile and group pipe piles under the action of horizontal loads.

According to one embodiment, a tracking drive solar photovoltaic power generator (1) in a tracking solar photovoltaic power generation system comprises a photovoltaic panel (10) that converts sunlight into electric power, and a tracking control portion (13) that provides tracking control over a turning position and a tilt position of the photovoltaic panel (10) so that the photovoltaic panel can track the solar trajectory based on a turning coordinate and a tilt coordinate that have been set corresponding to the solar azimuth angle and the solar altitude. The turning direction and the tilt direction of the photovoltaic panel (10) are controlled by a driving portion (12). The driving portion (12) is capable of tracking the solar trajectory based on the turning coordinate and the tilt coordinate transmitted from the tracking control portion (13) via a control line (13c).

The invention provides a piston supercharged material steam explosion method, comprising the following steps: feeding materials into a tank from the feed inlet of the tank, and introducing a steam explosion gas into the tank after the feed inlet is closed; when the materials are heated to a steam explosion temperature, pushing a supercharged piston in the tank to compress the materials, so that the tank is boosted to the steam explosion pressure; fast relieving the pressure so as to expand and crush the materials; and discharging the materials. The invention also provides a steam explosion device, comprising the tank, wherein the tank is internally provided with the supercharged piston; the tank between the initial position of the supercharged piston and the closed end of the tank is provided with a heating jacket, the feed inlet and a discharge outlet; the heating jacket is provided with the inlet and the outlet of a heating medium; and the inlet and the outlet of the heating medium and the discharge outlet are respectively provided with a valve.

The invention discloses an automatic sealing mechanism integrating the unfolding, folding and glue sealing functions. The automatic sealing mechanism comprises a machine frame, a conveying device used for conveying boxes is arranged on the machine frame, a box pushing mechanism is arranged opposite to the box entry end of the conveying device, a frame body used for containing original boxes is installed on one side of the box pushing mechanism, a box unfolding mechanism opposite to the larger side surfaces of the boxes is arranged on the side opposite to the side, provided with the frame body, of the box pushing mechanism, the movement direction of the box pushing mechanism is perpendicular to the movement direction of the box unfolding mechanism, and a lower box folding mechanism is arranged right below the box pushing mechanism and the box unfolding mechanism; an adjustable suspension bracket is arranged on the side surface of the conveying device and is sequentially provided with an upper box cover folding mechanism and a glue sealing mechanism in the conveying direction of the boxes.

In a submount main body (1) composed of a single crystal silicon, a mounting surface (4) on which a light-emitting device (11) is mounted is composed of a (100)-oriented surface and the inner surface of a through hole (3) which is formed by anisotropic etching is parallel to the (110)-oriented surface. The light-emitting portion of the light-emitting device (11) is arranged to face a device-side opening (31) which opens into the mounting surface (4) of the submount main body (1). Consequently, heat generated in the light-emitting device (11) can be discharged to the outside more efficiently than the case where the light-emitting portion is arranged to face a side opposite to the submount side. Specifically, light from the light-emitting device (11) is reflected by a reflective surface formed on the surface of the through hole (3), and highly efficiently transmitted outside of the submount main body (1).

The invention discloses a dual-piston pressure-controlling type material steam explosion method comprising the following steps of: feeding materials into a tank body from a feed opening of the tank body; steaming towards the tank body at the rear part of the closed feed opening; when the materials are heated to the steam explosion temperature, pushing a boosting piston in the tank body to compress the materials to allow the tank body to boost to the steam explosion pressure; and quickly releasing pressure to enable the materials to expand and burst and discharging the materials. The invention discloses a steam explosion device comprising the tank body, wherein a boosting piston and a pressure-relief piston are arranged in the tank body; the feed opening, a steam inlet and a discharging port are arranged on the tank body between the initial positions of the boosting piston and the pressure-relief piston; a valve is arranged on the steam inlet; The invention also discloses an another steam explosion device comprising a tank body, wherein a boosting piston and a pressure-relief piston are arranged in the tank body; a feed opening and a discharge opening are arranged on the tank body between the initial positions of the boosting piston and the pressure-relief piston; a heating jacket is arranged on the tank body between the feed opening and the discharge opening and is provided with a heating medium inlet and a heating medium outlet; and valves are respectively arranged on the heating medium inlet and the heating medium outlet.

The invention relates to a supported alpha-diimine metal complex, and its application in olefin polymerization. The structural formula of an alpha-diimine compound in the complex is represented by formula I. The substituent group of the alpha-diimine compound connected to an acenaphthene ring has a hydroxyl group, and the hydroxyl group is connected with a supporter through a hydrogen bond in order to directly support the alpha-diimine compound on the supporter; and a metal complex containing the alpha-diimine compound, a supported substance containing the alpha-diimine compound and a supported substance containing the metal complex containing the alpha-diimine compound can be further prepared. The support mode of the supported alpha-diimine metal complex is simple, and the supported alpha-diimine compound metal complex can be used in olefin polymerization as a main catalyst to overcome the disadvantages of kettle sticking, difficult control of the form of polymers, large use amount of a cocatalyst, poor heat stability and the like.

The invention relates to an alpha-diimine compound, a metal complex and a load containing the compound and application thereof. The structural formula of the compound is shown as a formula I. The alpha-diimine compound is provided with a hydroxyl radical on a substituent group connected to an acenaphthene ring, the compound can react with active radicals on a carrier after chemical modification to form covalent bonds, so that the alpha-diimine compound is loaded on the carrier in a covalent bonding manner; and the metal complex containing the alpha-diimine compound, the load containing the alpha-diimine compound and a load of the metal complex containing the alpha-diimine compound can be further obtained. The metal complex containing the alpha-diimine compound and the load containing the metal complex can be used in polymerization of olefins as main catalysts. The metal complex of the load-type alpha-diimine compound can overcome the disadvantages of kettle adhesion, difficult control for polymer conformation, large using amount of catalyst promoter, poor heat stability and the like, and the covalent bonding load manner avoids the complex from being separated from the carrier .

The invention provides a movable micro electrolysis wetland sewage treatment method and a movable micro electrolysis wetland sewage treatment system. The system comprises a pretreatment unit (1), a down-flow enhanced wetland region (2) in which a graphite particle anode electrolytic tank (18) is arranged, an electrolysis enhanced dephosphorization region (3) provided with a scrap iron anode electrolytic tank (19), and an up-flow denitrification enhanced wetland region (4) designed with a scrap iron anode electrolytic tank (20), which are used for removing suspended solids, organic matters / ammonia nitrogen, phosphides and nitric nitrogen respectively, wherein the electrolytic tanks are independent push-pull draw boxes, and are connected with a low-voltage stabilized voltage supply (14); a light fiber ball filter material is taken as a wetland bed filler. The system is provided with movable rollers (11). The invention develops a set of sewage treatment method and system which have the advantages of easiness, convenience, practicability, high efficiency, economical efficiency, beautifying of the environment and scattered on-site treatment aiming at the characteristics of economic backwardness, scattered distribution of sewage sources and the like of rural areas.

The invention provides a preparation method of a particle drainage agent, and relates to the technical field of metallurgical fire-refractory materials. The preparation method of the particle drainageagent comprises the following steps of selecting a composition of one or more than two of chrome ore, quartz sand, corundum, zircon sand and magnesium sand with granularity smaller than or equal to 100 meshes as a raw material, weighing the applicable weight of raw materials according to the formula of the drainage agent, and uniformly mixing, so as to obtain fine powder; adding a binder into thefine powder, and uniformly mixing; extruding, granulating into particles, and drying and curing the obtained particles, so as to obtain the particle drainage agent. The particle drainage sand prepared by the method has the advantages that the components are uniform and stable, the content deviation is controlled within + / -0.5%, and the segregation of components is avoided in the production, transportation and use process. The particle drainage agent has the advantages that the granularity is uniform and stable, and the controllability is larger; in the use process, the casting effect is stable, and the automatic casting rate is stabilized to 99.5% or above.

The invention discloses active tea cream high in extraction rate and complete in beneficial component preservation and a preparation method thereof, and belongs to the technical field of tea leaf deep processing. The active tea cream comprises the following components by weight: 30 to 50 % of tea polyphenol, 20 to 30 % of tea polysaccharide, 6 to 10 % of free amino acid and 3 to 4 % of caffeine, and the sum of the weight percentage of the components is not larger than 100 %. The preparation method comprises processes of stocking, extracting, dirt-removing, condensing and forming: placing pulverized tea leaves in an extracting jar, adding an extractive at the temperature of 40 to 60 DEG C according to the feed-liquid ratio of 1: (10 to 15), extracting once or twice, extracting for 10 to 20 min every time, and collecting low temperature extract liquid; adding an extractive at the temperature of 60 to 80 DEG C according to the feed-liquid ratio of 1: (5 to 10), extracting once or twice, extracting for 10 to 20 min every time, and collecting high temperature extract liquid, mixing the extract liquid gained after double extraction according to certain proportion to gain total extract liquid, and gaining the active tea cream after dirt-removing, condensing and drying. The preparation method is high in extraction rate, complete in beneficial component preservation and simple in manufacturing technology; the prepared active tea cream is rich in nutrition, strong in fragrance and mellow in taste, and has a good market popularizing value.

The invention provides a memory alloy based nano laminated composite material and a preparation method thereof. According to the memory alloy based nano laminated composite material, X metal with thevolume fraction of 20-80% is used as a reinforced phase, and a NiTi shape memory alloy is used as a base body. Metal of the NiTi shape memory alloy and the reinforced phase is arranegd alternately ina laminated mode, the laminated composite material is formed, the laminated thickness of the reinforced phase reaches a micro-nano dimension, and the X metal is one of Nb, Cu, Ta, Ni, Mo and W. According to the memory alloy based nano laminated composite material and the preparation method thereof, a nano laminated composite material mode is adopted, the NiTi shape memory alloy is used as the basebody, and the memory alloy base nano laminated composite material is prepared. Due to large elastic strain of the nano reinforced phase and the NiTi shape memory alloy base body and the fact that thenano laminated material has a lot of advantages such as being capable of realizing a large block mode, the memory alloy based nano laminated composite material is expected to controllably achieve high strength and high tenacity in large block materials.

A programmable gain MOS amplifier is disclosed. The programmable gain MOS amplifier is capable of increasing its programmable gain linearly in dB unit by increasing its gain level data linearly. The programmable gain MOS amplifier includes a plurality of gain providers for providing predetermined gains respectively, and a plurality of gain tuners. Each of the plurality of the gain tuners is disposed for adjusting the predetermined gain from the corresponding gain provider. Each of the gain tuners includes a gain enabling module and a gain decreasing module. The gain enabling module allows the corresponding predetermined gain to add to the programmable gain of the MOS amplifier. The gain decreasing module declines the corresponding predetermined gain added to the programmable gain of the MOS amplifier.

The invention relates to a spinal cord injury impactor precise in positioning and adjustable in strike force. The impactor comprises a base, a support and a striker, a limiting stopper connecting mechanism and an electromagnetic induction device which can slide up and down along a vertical bar are installed on the vertical bar of the support, a striker motion limiting stopper is arranged on the limiting stopper connecting mechanism and can be driven to rotate around the central axis of the vertical bar and rotate around the horizontal shaft perpendicular to the vertical bar, a protruding part is arranged at the upper end of the striker, the striker motion limiting stopper is provided with a motion limiting rail used for penetrating through the striker so as to guide the motion track of the striker and clamp the protruding part of the upper end of the striker, the falling height of the striker is limited, the electromagnetic induction device is arranged on the upper side of the limiting stopper connecting mechanism and can rotate around the central axis of the vertical bar, and when the electromagnetic induction device is energized, the protruding part of the upper end of the striker which is lifted is attracted. The impactor is high in striking accuracy, good in regulation, high in repeatability, simple in structure and low in manufacturing cost.

The invention discloses a novel special concrete contraction reducing type compacting agent, which relates to a novel special concrete contraction reducing type compacting agent, and belongs to the technical field of concrete admixture. The preparation method of the product comprises the following steps: preparing stock solution with deionized water, sodium sulfide solution, sulfur powder and a catalyst, wherein the catalyst is mixed solution of methoxypolyethylene glycol, dimethyl-1, 3-propylene glycol and alkylphenol ethoxylate sodium sulfide; and then preparing an inorganic waterproof contraction reducing type compacting agent for inorganic concrete with deionized water, the stock solution, triethanolamine, methoxypolyethylene glycol, dimethyl-1, 3-propylene glycol, alkylphenol ethoxylate sodium sulfide, silicate and a defoamer DF-642. The compacting agent is prepared under the low intermingled quantity, and experimental results show that when the intermingled quantity is 0.1-2 percent, the invention can effectively reduce the early contraction of the concrete, decrease the cracking risks, enhance the concrete compaction, improve the pore structure, and achieve the functions of preventing water and leakage, thereby enhancing the resistance of the concrete against physical and chemical erosion. However, the invention relates to an II type compacting agent, which has a significant effect on the reduction of the concrete contraction and is particularly applicable to the engineering field with strict requirements for concrete contraction and cracking.

The invention discloses a preparation device and a preparation method of porous microspheres. The preparation device comprises an external phase fluid injector, an intermediate phase fluid injector, an internal phase fluid injector and a microfluidic chip unit, wherein the microfluidic chip unit comprises an external phase input channel, an intermediate phase input channel, an internal phase inputchannel, a multinuclear double emulsion generating microstructure and a mainstream channel; the multinuclear double emulsion generating microstructure comprises a dual concentric glass capillary; a flow velocity controllable gas is introduced into the internal phase channel through the internal phase fluid injector; and a liquid containing nanoparticles is introduced into the external phase channel through the external phase fluid injector. Convenient control of the size and porous parameters of the porous microspheres is realized, and the nanoparticles help enhance the emulsion stability andcontrollability of the interfacial tension. According to the prepared porous microspheres, no components will be remained in the microspheres, thus not affecting the subsequent application. In addition, the porous microspheres for storing specific gases can be applied to chemical reactions.

The invention discloses an organic amine oriented hydrothermal method for preparation of molybdenum disulfide with multiple morphologies. The method includes the steps of: dissolving a certain amountof a molybdenum source, a sulfur source and organic amine in deionized water to form a solution, controlling the concentration of the molybdenum source at 0.1-0.3M, the S / Mo atom ratio of the raw materials at 2:1-4:1, and the ratio of organic amine to the molybdenum source at 2-6; placing the prepared solution in an airtight hydrothermal reaction kettle for reaction for 12-72h, and controlling thereaction temperature at 160-240DEG C; and at the end of reaction, conducting cooling, pumping filtration, washing and drying, thus obtaining MoS2 products of multiple morphologies. The synthesis method provided by the invention has the advantages of mild conditions, simple operation and high controllability, and the prepared products have flower shape, globularity, cylindrical shape and other geometric shapes.

The invention discloses a metal-based surface composite material and a preparation method thereof. The preparation method comprises the following steps: uniformly coating a lower plate with enhanced granules such as silicon carbide by using organic adhesive, covering the lower plate with a thin upper plate, and performing stirring and friction treatment on the upper plate by using a stirring headwith a needle under the conditions that the rotating speed of a stirring and friction machine is 1000 to 2500 rpm and the welding speed is 30 to 200 mm / min to obtain the granule enhanced metal-based surface composite material. The organic adhesive comprises polyvinyl alcohol. The enhanced granules comprise silicon carbide and aluminum oxide. The metal plate can be aluminum alloy or magnesium alloy.

A handkerchief holding system for displaying a portion of a handkerchief or pocket square, the handkerchief holding system including a substantially squared-hexagon combination pouch-like construction which is configured to be disposed in the breast pocket of clothing such as a suit, tuxedo, sport jacket or vest. The handkerchief holding system may be made from any quality material and is supported by a clamping mechanism. The handkerchief holding system can be squeezed open by hand at the top of the opening due to the flexibility and resiliency of its clamping mechanism, then a folded handkerchief, pocket square or piece of material, e.g., may be inserted into the handkerchief holding system and the clamping mechanism released to close and secure (clamp down on) the folded handkerchief for temporary or permanent use in a standard breast pocket of clothing such as a suit, tuxedo, sport coat or vest. Once the handkerchief has been secured, it forms a complete holding system. The complete holding system can then be disposed in the breast pocket.

The invention discloses a horizontal bearing characteristics test model for prestressed concrete pipe piles and a modeling method. The horizontal bearing characteristics test model comprises a model tank, a carrying platform used for carrying a model pile is arranged in the model tank, the upper end of the model pile is embedded into the carrying platform, a vertical loading system connected with a counter-force frame and applying vertical force on the carrying platform is arranged above the model tank, a horizontal loading system connected with the model tank and applying horizontal force on the carrying platform is arranged on the inner side of the model tank, and each of the carrying platform, the model pile and the loading systems is provided with a monitor. The horizontal bearing characteristics test model can well control requirements for load conditions of pile foundation load test, more really simulate practical working conditions of the pile foundation, and is a test device for researching bearing characteristics of a simple pipe pile and a group of pipe piles under the action of horizontal load.

The invention discloses a preparation method of a microcapsule, which comprises the steps of: uniformly mixing silicon dioxide particles, monomer provided with ethylene and silane coupling agent with double bonds, stirring and reacting for 1 to 24 hours under a closed state at the temperature between 40 and 70 DEG C, then adding an oil-soluble cross linker and an oil-soluble initiator, stirring uniformly and then adding a dispersant and de-ionized water to prepare a suspension system, polymerizing for 2 to 6 hours in a nitrogen atmosphere at the temperature between 60 and 80 DEG C with rotating speed of 50-300 rpm, then raising the temperature to 95 DEG C and curing for 1 hour, then carrying out cooling and acid cleaning to obtain composite particles, adding hydrofluoric acid, dipping to remove the silicon dioxide inside the composite particles, then preparing the microcapsule with multi-cavities through neutralizing, washing and drying. The preparation method is easy to obtain materials, has simple technique, has good controllability on the morphostructure of the microcapsule, does not relate to organic solvents and is suitable for industrial production. Moreover, the prepared microcapsule has the advantages of high structure strength, multi-empty cavities and good controllability on the slow-release effect.

A binding mechanism cartridge is detachably held by a binding device body instead of a staple cartridge which is detachable into the binding device body. The binding mechanism cartridge includes a body portion, an upward-and-downward moving portion and a base portion. The body portion is detachably held by the binding device body. The upward-and-downward moving portion is on the body portion to move close to or away from one surface of a bundle of sheets by moving upward and downward by interlocking with a drive mechanism of the binding device body. The base portion is on the body portion to face the upward-and-downward moving portion and supports the other surface of the bundle of sheets. The upward-and-downward moving portion includes a binding mechanism which is partially in pressure contact with the one surface according to a movement of the upward-and-downward moving portion to binds the bundle of sheets.

The invention discloses a preparation method of a hyperbranched poly(beta-cyclodextrin) containing an azide group. The preparation method comprises the following steps of: firstly, preparing a hexa-monosubstituted azido beta-cyclodextrin monomer from hexa-monosubstituted paratoluene sulfonylated beta-cyclodextrin, potassium iodine and sodium azide; secondly, preparing a polysilicon hydrogenated beta-cyclodextrin monomer containing hexa-mono azide from the hexa-monosubstituted azido beta-cyclodextrin monomer, dimethyl dichlorosilane and pyridine; and lastly, preparing the hyperbranched poly(beta-cyclodextrin) containing an azide group from the polysilicon hydrogenated beta-cyclodextrin monomer containing hexa-mono azide and divinyl tetramethyldisiloxane. By adopting the method, complex steps in monomer synthesis are simplified, the branching coefficient of the poly(beta-cyclodextrin) and the proportion of cyclodextrin molecules have higher controllability, and the outer end of the poly(beta-cyclodextrin) can be quickly modified by effectively utilizing a click chemistry reaction.

The invention belongs to the field of preparation of permanent magnet materials, and in particular relates to a high-resistivity neodymium-iron-boron rare earth alloy and a preparation method thereof.The microstructure of the neodymium-iron-boron rare earth alloy is that a neodymium-iron-boron substrate is uniformly divided into different units by a high-resistivity insulating material, and the neodymium-iron-boron rare earth alloy is composed of neodymium-iron-boron nanocrystalline alloy powder and a nano inorganic insulating material layer wrapping the surface of neodymium-iron-boron nanocrystalline alloy powder. The nano inorganic insulating material is AlN, SiN, ZrN and SiC, and the weight of the nano inorganic insulating material is 1% to 5% of the weight of neodymium-iron-boron. Theparticle size of the neodymium-iron-boron nanocrystalline alloy powder is 0.1 to 0.3 mm, and the particle size of the insulating coating material is 1 to 100 nm. According to the method, the dosage of the insulating material can be greatly reduced, and the distribution uniformity of the insulating material in the substrate is improved, so that the insulating effect is improved.

The invention provides a preparation method of a porous CuO-CeO2 dual-metallic oxide catalyst. The preparation method applies a novel combustion method of combining a traditional combustion method and a silicon dioxide colloid particle plate, mixes cerate, copper salt, a silicon dioxide colloid particles template and glycine to spontaneously burn under 150 DEG C; removes silicon dioxide by corroding sodium hydroxide solution; thus the porous CuO-CeO2 dual-metallic oxide catalyst is obtained. The porous CuO-CeO2 dual-metallic oxide catalyst prepared by the method is big in output and high in purity; ratio of every component and aperture are easy to control. The method is simple and easy to practice, small in pollution, low in cost and has certain universality. The prepared porous CuO-CeO2 dual-metallic oxide catalyst has the advantage of porous geological structure, and CeO2 is tightly contacted with CuO, so that the synergistic effect between CeO2 and CuO can be well displayed, CeO2 and CuO have excellent catalytic activity in CO catalytic reaction.

The invention discloses a middle and large-sized air purification system adopting coupling of solid-state fans to carry out adsorption purification, which comprises a cabinet body, an adsorption purification unit and a gas transmission unit. The gas transmission unit provides power for air circulation in the system; air flow can be greater than 15m<3> / h; the gas transmission unit comprises an air duct for connecting the cabinet body and the adsorption purification unit, first solid-state fans for providing gas circulation power, a gas distributor and a driving power supply; the gas distributor comprises at least three air supply pipes connected in parallel, a solid-state fan mounting pipe connected with the air supply pipes and an air supply pipe arrangement device for mounting the air supply pipes; pipelines connected with the air supply pipes are arranged in the solid-state fan mounting pipe; one or more first solid-state fans are mounted in each pipeline. According to the middle and large-sized air purification system disclosed by the invention, no vibration or noise is generated in the air flow transportation process; the solid-state fans and the air supply pipes are easy to integrally couple, so that a diameter of an air supply pipeline can be greatly reduced, and mounting cost and a mounting space are saved; parameters in the transportation process, such as a flow rate, flow and the like, are easy to regulate.

The invention relates to a Raman gas analyzing device of column vector field excited hollow core photonic crystal fiber. The prior art has defects of complex structure, low sensitivity and high structural requirement. According to the invention, the surface-enhanced Raman effect and the hollow core photonic crystal fiber technology are combined, and the device is based on the gas Raman analysis principle. A detected gas flows through hollow cavity of hollow core photonic crystal fiber, and a surface-enhanced Raman structural layer is arranged at the inner side of the hollow cavity of the hollow core photonic crystal fiber; by a column vector filed, one end of the fiber is coupled into the hollow core photonic crystal to realize Raman excitation, a photoelectric detection part detects a Raman scattering signal, and analysis is carried out to obtain matter character information of the detected gas. The device provided by the invention has characteristics of low dosage of the detected gas, high sensitivity, high signal to noise ratio, strong resistance to interference, low positioning requirement, easily constructed system, easy miniaturization, strong analysis and discrimination capability, wide application range, easily expanded function and the like.