33results about How to "Meet the influence" patented technology

Characters of the antenna are that the antenna consists of metal layer of keyset of handset. The metal layer includes groove, grounding device, and feed line. The invention also discloses a handset with built-in antenna. The handset includes print circuit board, and metal layer of keyset. Being as antenna, the metal layer is in use for receiving and transmitting wireless signal. The metal layer includes groove in order to satisfy requirement of antenna size from frequency band. Being setup on the metal layer, the feed line unit connected to RF sect of print circuit board is in use for receiving and transmitting radio frequency. The grounding device setup on metal layer is connected to ground of the print circuit board.

The invention discloses a small-size high-isolation double-frequency MIMO antenna for a WLAN (Wireless Local Area Network), and belongs to the technical field of antennas. A first dielectric plate (1) is covered by two metal grounding plates (11), and the two metal grounding plates (11) are arranged vertically and are connected with each other through an inductor (12). Two surfaces of a second dielectric plate (2) and two surfaces of a third dielectric plate (3) are respectively coated with metal layers, wherein one metal layer is a dipole antenna unit which is arranged symmetrically, and the other metal layer is a rectangular metal belt (25). The antenna can completely cover the working frequency bands (2.4-2.485GHz and 5.15-5.85GHz) of the WLAN, is small in size, is high in isolation, and is good in performance of directed radiation. Moreover, the impact on the antenna from a background installation environment is smaller, and the antenna is suitable for roof-absorbing installation.

The invention discloses an in-situ self-inspection and metering device of an automatic test system. The in-situ self-inspection and metering device of the automatic test system comprises a main control computer, a first measurement and control module, a second measurement and control module, a test interface, a power module and a calibration instrument. The first measurement and control module is connected with the main control computer through a PXI bus. The second measurement and control module is connected with the main control computer through an LXI bus. The test interface is connected with the first measurement and control module and the second measurement and control module respectively. One end of the power module is connected with the main control computer, and the other end of the power module is connected with the test interface. The calibration instrument is connected with the test interface. The invention further provides an in-situ self-inspection and metering method. According to the in-situ self-inspection and metering device and the in-situ self-inspection and metering method of the automatic test system, the accuracy and the reliability of self-inspection results can be improved effectively, the self-inspection and metering period of the system is shortened, and the automation and informatization needs are met.

The invention discloses an integrated intelligent mini-house system which comprises a house frame system, a ventilation system and an intelligent entrance guard system. The house frame system comprises an outer skin, an interior plate and a square pipe skeleton which is a house skeleton formed by welding steel bar square pipes. The outer skin is bonded to the outer surface of the square pipe skeleton through a flexible adhesive, and the interior plate is bonded to the inner surface of the square pipe skeleton through a flexible adhesive. The space between the outer skin and the interior plate is filled with a soundproof layer. The soundproof layer and the outer skin as well as the soundproof layer and the interior plate are bonded together. The square pipe skeleton is internally provided with a seat skeleton formed by welding steel bar square pipes. The lower side of the seat skeleton is provided with a ventilation system. The front face of the square pipe skeleton is provided with a door frame used for mounting a heat insulation broken bridge door which is provided with the intelligent entrance guard system. The integrated intelligent mini-house system has the characteristics of being closed, light in weight, high in space utilization rate and good in sound and heat insulation performance, the fragmentized time of people is fully utilized, and the house system meets the demands of leisure, entertainment and health.

The invention provides a high-rigidity prestress loading framework structure for a large-scale three-dimensional physical model test. The high-rigidity prestress loading framework structure comprisesa base, an anti-deformation prestress loading framework assembly, a load exertion assembly and a model test specimen preparation and conveying assembly, wherein the anti-deformation prestress loadingframework assembly and the model test specimen preparation and conveying assembly are arranged on the base; the load exertion assembly is arranged on the anti-deformation prestress loading framework assembly; the anti-deformation prestress loading framework assembly comprises a middle framework, a front end framework and a back end framework; in a large-tonnage loading process, the self deformation of test equipment in the loading process can be effectively controlled; the test data credibility is improved; the screw bolt connection mode of a conventional loading framework is thoroughly avoided; the rigidity requirement of a hard rock similar material under the large-tonnage loading can be effectively met; the loading framework has higher automation degree; the artificial model test specimen preparation and conveying assembly is used for the first time; the precision detection during the test specimen preparation is met; the work intensity and the operation risk of experiment personnelcan be greatly reduced.

The invention discloses a ship swaying platform for wind tunnel test. The ship swaying platform comprises a moving mechanism, a follow-up mechanism, a moving platform, a base and a motion controller;the moving mechanism and the follow-up mechanism are arranged between the moving platform and the base, the motion controller and the motion mechanism are connected through a cable to control the motion mechanism to perform controllable telescopic motion; and a main control computer of a wind tunnel transmits a posture control signal of a ship model to the motion controller through the cable, andthe motion controller controls a RPR component I, a RPR component II and a RPR component III to perform telescopic motion. The ship swaying platform can be used for simulating the motion of an aerialcarrier ship in the wind tunnel to form an air flow field above and around a flight deck of the aerial carrier ship, and conditions are provided for the measurement of the dynamic ship air flow fieldin the wind tunnel, the research of the adaptability of warships of the aerial carrier ship and a shipboard aircraft and the like. The different attitudes of the ship model in the wind tunnel flow field can be adjusted, and conditions are provided for the aerodynamic measurement of the ship model under different attitudes and the measurement of the surrounding airflow field.

The invention discloses a light expansion shaft which comprises a supporting pipe and an expansion pipe, wherein the supporting pipe is sleeved with the expansion pipe. The two ends of the expansion pipes are fixed to the supporting pipe in a sealed mode. The supporting pipe is of a hollow structure and the two ends of the supporting pipe are sealed. Vent holes communicated with the hollow structure are formed in the side wall of the supporting pipe in a penetrating mode. A gas inlet communicated with the hollow structure is further formed in the supporting pipe. When the light expansion shaft is used, the expansion pipe is sleeved with a center coiling block of a film-shaped material, pressure gas flows to the hollow structure of the supporting pipe through the gas inlet, the pressure gas enters a gap between the expansion pipe and the supporting pipe through the vent holes, so that the expansion pipe is expanded and attached to the center coiling block, the center coiling block is prevented from slipping, the expansion pipe returns to normal after the gas inside the supporting pipe is released, and the center coiling block can be conveniently taken down. The light expansion shaft is simple in structure, light in total weight, convenient to operate and capable of greatly reducing the number of operators, relieving labor intensity, improving labor efficiency and effectively solving the problem that deviation of coaxiality of the film-shaped material and the expansion shaft is too large in the prior art.

The invention discloses an urban rail elevated station rail-mounted area wind-resistant and quakeproof suspended ceiling structure and a construction method. The suspended ceiling structure comprisesI-shaped steel, hoops are arranged on the two sides of a lower leg steel beam of the I-shaped steel respectively, shock absorber bolt grooves are formed in the hoops, and shock absorber bolts are arranged in the shock absorber bolt grooves in a penetrating and sleeving mode; supporting columns are arranged in the middle for rigid connection; and the suspended ceiling structure further comprises afour-cone-shaped fabricated keel framework is formed among four main keels, four side keels and universal joint flanges, four triangular unit assembly areas are formed among the four main keels and the four side keels, and the four triangular unit assembly areas are provided with punched acoustic board triangular units and aluminum strip shutter triangular units respectively. According to the suspended ceiling structure, a triangular unit is formed by the punched acoustic boards and the aluminum strip shutters in a machining field, a 'four-cone-shaped' suspended ceiling is formed through on-site hoisting, the requirements for lighting, sound absorption, space decoration and attractive decoration are met, and the influence of the 'pipe narrow effect', vehicle walking vibration and earthquake action on the suspended ceiling is reduced.

The invention discloses a passive driven electrophoresis type electronic paper device and a driving method of the passive driven electrophoresis type electronic paper device. The electronic paper device comprises a display medium layer, and an upper substrate and a lower substrate which are opposite to each other, wherein a public lead electrode, a display lead electrode and a display electrode are formed on the upper surface of the lower substrate; a public electrode is formed on the lower surface of the upper substrate; the public electrode is electrically connected with the public lead electrode by virtue of a transfer printing electrode; the display electrode is connected with the display lead electrode; the display electrode and the display lead electrode are connected with the display medium layer by virtue of an adhesive layer; the display medium layer is arranged between the adhesive layer and the public electrode; an electric field is formed between the display electrode and the public electrode and has the enough powerful to drive the display of the display medium layer. The passive driven electrophoresis type electronic paper device is low in manufacturing cost and high in production efficiency; the application progress and the popularization progress of electronic paper can be greatly facilitated.

The invention discloses a multi-channel lowpass filter, which comprises a power supply module, a lowpass filtering control module and at least one path of filtering module, wherein the filtering module comprises a filtering input channel module, an active lowpass filtering module, a signal amplification module, a switch capacitor filtering module and a filtering output channel module; the power supply module is respectively connected with the lowpass filtering control module, the active lowpass filtering module, a signal amplification module and a switch capacitor filtering module; the filtering input channel module is connected with the active lowpass filtering module; the active lowpass filtering module is connected with the signal amplification module; the signal amplification module is connected with the switch capacitor filtering module; the lowpass filtering control module is connected with the switch capacitor filtering module; and the switch capacitor filtering module is connected with the lowpass output channel module. The multi-channel lowpass filter has the advantages of large noise margin, strong anti-jamming capability, high precision, low cutoff frequency, small amplitude fluctuation during frequency response and high stability.

The invention discloses a novel long-endurance unmanned ship based on clean energy. The novel long-endurance unmanned ship comprises a ship body, and a driving mechanism, an energy recovery mechanism, a monitoring mechanism and a control mechanism which are arranged on the ship body, wherein the driving mechanism is used for driving the hull to travel; the energy recovery mechanism comprises a bracket, a sail and a solar panel; the sail is movably mounted on the bracket in a foldable manner; the plurality of solar panels are arranged on the sail and are used for converting solar energy into electric energy for the long-endurance unmanned ship to use; the monitoring mechanism is used for monitoring environment information; the control mechanism is used for controlling the long-endurance unmanned ship according to the environment information; wherein when it is judged that the sail is in the safe environment, the sail and the solar panels are controlled to be unfolded to obtain solar energy; and when it is judged that the overturning risk exists, the sail and the solar panels are controlled to be folded. According to the scheme, wind energy and solar energy can be utilized, the influence of stormy waves on driving is reduced, and the problem that an unmanned ship cannot work in a severe environment for a long time is practically solved.

The invention discloses a storage yard on a drilling platform used for storing the drill pipes and goods, which comprises supporting structures (30) arranged in the storage yard in parallel at intervals, wherein the two ends of each supporting structure are respectively provided with a fixed blocking bar (1), and the middle part of each supporting structure is respectively provided with moveable blocking bars (3) at intervals. According to the storage yard on the drilling platform used for storing the drill pipes and goods provided by the invention, simple located eye plate is adopted and the forms of the moveable blocking bars are modified, therefore, the moveable blocking bars can be guaranteed to move and locate randomly on the storage yard structure welded with a locating eye plate, the structural strength of the blocking bars is enhanced and the stacking space of the drilling tools such as a drill pipe is increased, so that the storage yard is very suitable for the drilling platform or a drilling ship, and can manage the drilling tools such as the drill pipe and the goods space preferably and more effectively; the structural strength of the storage yard is high, so that the influence of the drilling tools such as the drill pipe and the goods on the blocking bars due to the shaking ship hull when the drilling platform or the drilling ship is towing or sailing can be avoided. The storage yard on the drilling platform used for storing the drill pipes and goods provided by the invention is convenient to operate, and the square steels on the moveable blocking bars are used as pedals, thus facilitating the movement of the moveable blocking bars preferably.

The invention discloses a small-size high-isolation double-frequency MIMO antenna for a WLAN (Wireless Local Area Network), and belongs to the technical field of antennas. A first dielectric plate (1) is covered by two metal grounding plates (11), and the two metal grounding plates (11) are arranged vertically and are connected with each other through an inductor (12). Two surfaces of a second dielectric plate (2) and two surfaces of a third dielectric plate (3) are respectively coated with metal layers, wherein one metal layer is a dipole antenna unit which is arranged symmetrically, and the other metal layer is a rectangular metal belt (25). The antenna can completely cover the working frequency bands (2.4-2.485GHz and 5.15-5.85GHz) of the WLAN, is small in size, is high in isolation, and is good in performance of directed radiation. Moreover, the impact on the antenna from a background installation environment is smaller, and the antenna is suitable for roof-absorbing installation.

The invention discloses a flexible supporting system for remote sensing satellite whole-spacecraft transport. A remote sensing satellite adapter is installed on a vertical structure of an L-type support in a thread connection mode, an auxiliary supporting structure is arranged on a horizontal structure of the L-type support and used for supporting a remote sensing satellite, a satellite supporting rod used for supporting the remote sensing satellite is supported at the upper end of an S-type weighing sensor, the lower end of the S-type weighing sensor is arranged on a guide assembly, the guide assembly is sleeved with a spring assembly, the lower end of the guide assembly penetrates through a hole in a guide plate, the spring assembly is compressed to move under the pressure action generated after the remote sensing satellite is installed, the upper ends and the lower ends of two sets of height adjusting rods are screw rods, the height adjusting rods are connected with the guide plate and a packaging box connecting assembly to adjust the height of the portions, supporting the remote sensing satellite, of the height adjusting rods, the height adjusting rods are locked through nuts on the adjusting rods after being adjusted to a proper height, and the packaging box connecting assembly is directly connected with the horizontal structure of the L-type support in a thread connection mode.

The invention belongs to the technical field of super capacitors, and discloses a transient support protection system for a super capacitor. The system comprises the super capacitor connected with a processor, the output end is connected with an external system through a one-way conduction module, a switch module and a sampling module in sequence, and the output end and the external system are also connected with a processor. The one-way conduction module is used for enabling one-way output power supply of the super capacitor according to a voltage difference between an external system and the super capacitor, the switch module is used for controlling electric connection between the external system and the super capacitor, and the sampling module is used for collecting a change state of a current signal from the external system; the processor judges whether the transient support protection system is subjected to high-frequency interference or not according to an acquisition result of the sampling module, and controls the switch-on and switch-off of the switch module by adopting a hysteresis control method in combination with the output voltage of the super capacitor and the driving voltage of the one-way conduction module; and the driving voltage of the one-way conduction module is ensured to meet the driving requirement in a high-frequency interference period.

The invention discloses a multi-channel lowpass filter, which comprises a power supply module, a lowpass filtering control module and at least one path of filtering module, wherein the filtering module comprises a filtering input channel module, an active lowpass filtering module, a signal amplification module, a switch capacitor filtering module and a filtering output channel module; the power supply module is respectively connected with the lowpass filtering control module, the active lowpass filtering module, a signal amplification module and a switch capacitor filtering module; the filtering input channel module is connected with the active lowpass filtering module; the active lowpass filtering module is connected with the signal amplification module; the signal amplification module is connected with the switch capacitor filtering module; the lowpass filtering control module is connected with the switch capacitor filtering module; and the switch capacitor filtering module is connected with the lowpass output channel module. The multi-channel lowpass filter has the advantages of large noise margin, strong anti-jamming capability, high precision, low cutoff frequency, small amplitude fluctuation during frequency response and high stability.

The invention discloses an intelligent classroom. The intelligent classroom comprises a classroom body, wherein a multimedia display screen and a control module are arranged on the front end wall of the classroom body, windows formed in the side face walls of the class are voice-control windows, and floor tile modules are arrayed to form a floor of the intelligent classroom. The intelligent classroom has the advantages that the classroom plays a role in reducing the influence of external noise on students through the voice-control windows, the requirements of students with different heights for the heights of desks and the heights of chairs are met, the class visiting requirements of different people are met, the intelligent classroom can be rapidly and conveniently converted into an action center of the students for dance teaching and vocal music teaching, the intelligent classroom is easy to operate and strong in automation, teaching resources and teaching cost are saved, and a good learning environment is created for the students.

The invention belongs to the technical field of steel wire ring wrapping equipment, and particularly relates to a material width detection component of a wrapping machine tool and an automatic control system. Comprising a cloth unloading rack, a cloth unloading roller is rotationally connected to the cloth unloading rack, a row of cloth guide rollers are rotationally connected to the cloth unloading rack, a width measuring sensor is fixedly arranged on the lower surface of a sensor mounting plate, a light reflecting plate is fixedly arranged on the cloth unloading rack below the cloth guide rollers, and the width measuring sensor and the light reflecting plate are vertically aligned. An electrical box is arranged on the cloth unloading rack, and a control module electrically connected with the width measuring sensor is arranged in the electrical box; the material side detection component is used for collecting information, and the control module is used for automatically producing a control instruction and adjusting the winding screw pitch in real time, so that the quality of finished products wound by the wrapping machine is improved, the output rate of waste rings is reduced, the detection time of a worker on a previous material is shortened, the time of manually inputting wrapping parameters is shortened, and the production efficiency is improved. And the overall efficiency of equipment is improved.

The invention discloses a ship swaying platform for wind tunnel test. The ship swaying platform comprises a moving mechanism, a follow-up mechanism, a moving platform, a base and a motion controller;the moving mechanism and the follow-up mechanism are arranged between the moving platform and the base, the motion controller and the motion mechanism are connected through a cable to control the motion mechanism to perform controllable telescopic motion; and a main control computer of a wind tunnel transmits a posture control signal of a ship model to the motion controller through the cable, andthe motion controller controls a RPR component I, a RPR component II and a RPR component III to perform telescopic motion. The ship swaying platform can be used for simulating the motion of an aerialcarrier ship in the wind tunnel to form an air flow field above and around a flight deck of the aerial carrier ship, and conditions are provided for the measurement of the dynamic ship air flow fieldin the wind tunnel, the research of the adaptability of warships of the aerial carrier ship and a shipboard aircraft and the like. The different attitudes of the ship model in the wind tunnel flow field can be adjusted, and conditions are provided for the aerodynamic measurement of the ship model under different attitudes and the measurement of the surrounding airflow field.

The invention relates to an arc-shaped high-voltage electrode capable of generating a simulated uplink precursor, belonging to the technical field of research of lightning protection. The arc-shaped high-voltage electrode is additionally provided with an arc-shaped voltage balancing net and a spherical electrode on the basis of the prior art, wherein the spherical electrode is fixed on one end ofa central support rod; a plane voltage balancing net of the arc-shaped high-voltage electrode is flatly paved on the lower surface of a tabulate support frame, and the arc-shaped voltage balancing net is flatly paved on the lower surface of an arc-shaped support frame. The arc-shaped high-voltage electrode capable of generating the simulated uplink precursor can meet the requirement for the influence of a downlink precursor on an object positioned at a low-voltage side under natural lightning stroke and has multiple advantages of light weight of integral equipment, low cost, long service life, and the like.

The invention belongs to the technical field of wire loop wrapping equipment, and in particular relates to a material width detection component and an automatic control system of a wrapping machine tool; comprising a cloth unloading frame, a cloth unloading roller is rotatably connected to the cloth unloading frame, and the cloth unloading frame There is a row of cloth guide rollers connected to the upper rotation, and a width measuring sensor is fixed on the lower surface of the sensor mounting plate. A reflector is fixed on the unloading frame under the cloth guide roller, and the width measuring sensor and the reflector are aligned up and down. Setting, an electrical box is arranged on the unloading rack, and a control module electrically connected with the width measuring sensor is arranged in the electrical box; the present invention collects information by means of the material-side detection component, automatically produces control instructions through the control module, and adjusts the winding in real time. The high pitch improves the quality of the finished product wrapped by the wrapping machine, reduces the output rate of waste rings, reduces the time for personnel to detect the pre-order materials, reduces the time for manual input of wrapping parameters, and improves the overall efficiency of the equipment.

The invention discloses a reflection type laser illumination system which comprises a light source, a beam splitter, a base plate, a wavelength conversion layer and a reflection film layer, wherein the base plate, the reflection film layer and the wavelength conversion layer are sequentially compounded; the beam splitter is arranged between the light source and the wavelength conversion layer; after light beams emitted from the light source are emitted onto the beam splitter, reflection light beams and wavelength conversion reflection light beams converted after the light beams pass through the beam splitter and are emitted onto the wavelength conversion layer are obtained; the reflection light beams and the wavelength conversion reflection light beams are merged in a light beam merging point; and mixed light is obtained. The functions of wavelength conversion, light reflection, light mixing, light homogenizing and the like are realized; the light efficiency is high; the irradiation distance can reach more than 10 km; and the laser illumination service life is long, is more than 5 times that of an existing mainstream illumination LED, and is more than 10 times that of a xenon lamp.

The invention discloses a passive driven electrophoresis type electronic paper device and a driving method of the passive driven electrophoresis type electronic paper device. The electronic paper device comprises a display medium layer, and an upper substrate and a lower substrate which are opposite to each other, wherein a public lead electrode, a display lead electrode and a display electrode are formed on the upper surface of the lower substrate; a public electrode is formed on the lower surface of the upper substrate; the public electrode is electrically connected with the public lead electrode by virtue of a transfer printing electrode; the display electrode is connected with the display lead electrode; the display electrode and the display lead electrode are connected with the display medium layer by virtue of an adhesive layer; the display medium layer is arranged between the adhesive layer and the public electrode; an electric field is formed between the display electrode and the public electrode and has the enough powerful to drive the display of the display medium layer. The passive driven electrophoresis type electronic paper device is low in manufacturing cost and high in production efficiency; the application progress and the popularization progress of electronic paper can be greatly facilitated.

The invention belongs to the technical field of electric power maintenance, and provides a reciprocating PRTV anti-pollution flashover paint automatic spraying device for insulators, which includes a mounting frame with hooks at both ends, and a reciprocating shaft driven by a drive motor is installed on the mounting frame to rotate and reciprocate. A slider is set on the shaft, and the slider is threadedly installed with the reciprocating shaft. A guide mechanism is also provided on the mounting frame to realize the sliding displacement of the slider along the direction of the reciprocating axis; two corresponding half-rings are hingedly installed on the slider. Spraying pipe, the two spraying pipes are connected to the feeding pipe, the inner side of the spraying pipe is evenly opened with a number of paint spraying holes, the top of the spraying pipe is provided with a connecting part, and when the two spraying pipes are connected through the connecting part at the top, the two spraying pipes A spray circle is formed. The invention can realize the automatic spraying of PRTV on insulators, thereby effectively replacing manual labor, greatly reducing potential safety hazards, saving time and effort in spraying operations, greatly improving spraying efficiency and spraying quality, and being convenient and practical.

A material bending performance testing device comprises a base, a supporting plate, a mounting frame, a plurality of supporting rods, a positioning piece, a power device, a telescopic rod and a pressing head. The supporting plate is arranged at the rear end of the base, and scale values are arranged on the front end face of the supporting plate in the vertical direction and located on the verticalcenter line of the supporting plate. The mounting frame is arranged at the top of the supporting plate; the power device is arranged on the mounting frame and is in power transmission connection withthe upper end of the telescopic rod, and the telescopic rod is arranged along the vertical center line of the supporting plate; the pressure head is arranged at the bottom of the telescopic rod; twogroups of supporting rods are arranged, and each group comprises two supporting rods; and the vertical center lines of the two sets of supporting rod supporting plates serve as the symmetry axis and are arranged at the two ends of the base correspondingly. The supporting rod is provided with a plurality of limiting rods; connecting rods are arranged at two ends of the positioning piece; placing holes are formed in the middles of the positioning pieces. According to the invention, the deformation quantity of the workpiece can be conveniently controlled and metered, the final bending condition of the workpiece can be determined, the material performance can be judged, and the workpiece fracture critical value can be measured.

The invention discloses an efficient and energy-saving air purification system, which comprises a placing plate, a pushing device, a dust removal device and an auxiliary device, wherein the side surface of the placing plate is connected with the pushing device, the dust removal device is arranged in the placing groove of the placing plate, the inner wall of the dust removal device is connected with a buoyancy device, the top end of the air blower of the dust removal device communicates with an air inlet device, the top end of the dust removal device is connected with two groups of liquid adding devices, the dust removal device is also communicated with the auxiliary device, the pushing device comprises a connecting plate, an inclined plate and a push rod, the vertical profile of the connecting plate is arranged to be in a U shape, the two sets of the vertical parts of the connecting plate are connected with the placing plate through connecting bolts, an inclined plate is bonded to thetransverse part of the connecting plate, a push rod is welded to the other side of the inclined plate, and the dust removal device comprises a liquid storage box, the air blower and a water passing pipe. The efficient and energy-saving air purification system is convenient to move and adjust and can also conduct other purification treatment on air.

The invention discloses a preparation method of a hydroxybutyl chitosan-gelatin composite gel artificial blood vessel coating, which is specifically implemented according to the following steps: step 1, preparing hydroxybutyl chitosan by taking chitosan as a raw material; 2, the hydroxybutyl chitosan prepared in the step 1 is compounded with gelatin, and the hydroxybutyl chitosan-gelatin composite gel artificial blood vessel coating is obtained. According to the preparation method of the hydroxybutyl chitosan-gelatin composite gel artificial blood vessel coating, the problems that a material for an existing medical blood catheter is difficult to adapt to blood compatibility and cannot meet requirements are solved.

The invention discloses a fluid-solid coupling experiment platform based on the influence of the flow velocity on a cantilever fluid conveying pipe. The experiment platform is composed of an experiment table, an excitation table, a pulse motor, a flange, a water tank, a camera and the like. The flange decouples transverse vibration displacement and axial vibration displacement and only retains axial vibration displacement, the water pump adopts a pulse water pump to ensure stable pulse flow velocity, the vibration excitation table and the hard tube are connected through a specially designed clamp, all required experiment devices are basic experiment devices used in experiments, in the way, what is guaranteed is that the experiment can meet the requirement for accurately measuring the influence of the flow velocity on the cantilever fluid conveying pipe, experiment equipment is not wasted, local materials are conveniently used, the experiment cost is reduced, the influence of the flow velocity on the vibration mode and the vibration frequency of the fluid conveying pipe is measured through a relatively simple experiment device, and the result accuracy is guaranteed.