224results about How to "Reproducible" patented technology

The invention discloses a fuze isolation mechanism which comprises a frame, and a first U-shaped separator, a second U-shaped separator, a first spring and a second spring which are arranged in the frame, wherein the two springs are two-way shape memory alloy materials; the first spring is longitudinally connected with the first U-shaped separator; the second spring is transversely connected with the second U-shaped separator; notches of the two separators are opposite to each other and are embedded into a whole in a dislocated mode under the action of the compressing force of the two springs, so that fuze isolation is realized; after the second spring and the first spring are sequentially electrified, the second U-shaped separator is pulled to transversely move by virtue of the retractive force generated by the second spring, and the first U-shaped separator is pulled to longitudinally move by virtue of the retractive force generated by the first spring, so that fuze isolation is released; and after the power of the first spring and the second spring is sequentially cut off, the first U-shaped separator and the second U-shaped separator are sequentially reset to the fuze isolation state. According to the fuze isolation mechanism disclosed by the invention, reliable switching between the isolation release state and the isolation state is realized, and the problem that the conventional fuze isolation mechanism is low in restorability and low in safety coefficient is solved.

The invention discloses a skin wound comprehensive detection method, including: the standard value of a three-dimensional measuring scale is obtained; information of a target image is acquired by shooting, the target image comprises a skin wound part image and the three-dimensional measuring scale image; correction deviation of the standard value of the three-dimensional measuring scale and the three-dimensional measuring scale image in the target image is obtained, restoring is carried out on the skin wound part image in the target image according to the correction deviation, and the actual information of the skin wound part image is obtained; and the actual information of the skin wound part image is uploaded to a database to be stored. The method can accurately record the skin wound data characteristic and is convenient for doctor to do follow-up visit and diagnosis and treatment.

The invention relates to a worker operation step specification identification determination and guidance method and system, and the method comprises the steps: 1, obtaining a video of a worker for standard operation, and determining the threshold value of the feature value of an image of a monitoring region corresponding to the standard operation according to a video frame; 2, acquiring a real-time worker operation video, and judging whether the characteristic value of the image of the monitoring area in the real-time worker operation video frame exceeds the threshold value or not; and 3, carrying out corresponding step prompt and/or information prompt according to whether the characteristic value exceeds the threshold value or not. Operation guidance is carried out through video monitoring and step prompting, the problem of operation errors is effectively prevented, the yield is improved, the problems that in the prior art, paper operation guidance books are low in efficiency and cannot carry out abnormity reminding are solved, and good processing habits of new workers can be established by continuously carrying out standard step comparison in a special training system.

The invention provides a method of improving buried resistance printed wire board resistance precision. The method of improving the buried resistance printed wire board resistance precision comprises the following steps: (1) supplying a board with a buried resistance layer, wherein the board with a buried resistance layer comprising an insulating medium layer, the buried resistance layer and a copper foil layer, (2) attaching a first light resistance film, proceeding a first time exposure, printing a circuit figure of a negative film on the first light resistance film, proceeding a first time develop, the circuit figure comprising a resistance circuit and a normal circuit, increasing 6 mil to a long side unilateral of circuit width of the resistance circuit, and increasing 1.25 mil to a broadside unilateral of circuit width of the resistance circuit, (3) proceeding a first time etching and a second time etching, (4) attaching a second light resistance film, proceeding a second time exposure, printing a circuit figure of a positive film on the second light resistance film, proceeding a second time develop, reducing 0.6 mil to a long side unilateral of circuit width of the resistance figure, and increasing 6 mil to a broadside unilateral of circuit width of the resistance figure, (5) proceeding a third time etching, and (6) proceeding brown oxide processing, controlling micro etching amount between 1.3-1.7um,proceeding a -17% extra compensation to the resistance figure of the positive film.

The invention relates to a polygonal-barrel tension-controllable fuzzing and pilling form and pulling measurement device and method. The device comprises a polygonal barrel, a friction mechanism, a tension mechanism, a microscopy photographing mechanism, a pulling mechanism, a creel, a static raising device and a control and data collection analysis system. The method includes the steps that after yarns are arranged and wound, by means of the polygonal barrel rotating angle by angle clockwise, raising, form observation and fuzzing and pilling sample preparation are carried out synchronously angle by angle on original yarn, ground yarn is obtained, raising and form observation are carried out synchronously angle by angle on the ground yarn until friction sample preparation and form measurement of all angles are finished, and then a microscopy form value and a pull force curve of yarn hairness and hair balls pulled from the ultimate ground yarn which pre-tension is exerted on are measured angle by angle. The measurement device and method are quick, easy and convenient to use, practical and accurate, can be used for fuzzing and pilling sample preparation of the yarn, measurement of fuzzing and pilling yarn hairness, hair ball quantity and form and the pulling curve and comprehensive evaluation of anti-pilling performance of the yarn.

The invention relates to a method for improving the resistance accuracy of a buried resistor in a PCB (printed circuit board), which comprises the following steps of: a step 1 of carrying out precompensation on an expected resistance of the buried resistor when the PCB is made into a finished product according to the resistance change rate of the buried resistor in the subsequent processing link so as to obtain a target resistance for making the buried resistor, and determining the length and the width of the buried resistor according to the target resistance; a step 2 of carrying out copper foil removal processing on a line layer on which the buried resistor needs to be made and making a square groove which has corresponding size and is used for accommodating the buried resistor at a preset position of the line layer; a step 3 of carrying out silk-screen printing in the square groove by adopting a screen printing plate to form a layer of resistor ink and baking and curing the resistance ink to form a buried resistor to be modified; and a step 4 of carrying out on-line dynamic modification and regulation on the buried resistor to be modified by adopting a resistor testing instrument and a laser ablation machine until the buried resistor with the target resistance is obtained. The method for improving the resistance accuracy of the buried resistor in the PCB, which is provided by the invention, can be used for obtaining the buried resistor with the high accuracy resistance.

The invention relates to aircraft environment spectrum and equivalence technology researches, in particular to a compilation method for an accelerated environment spectrum of a dissimilar metal material combination structure. The method comprises the steps of deriving an environment conversion coefficient formula of the combination structure according to a single metal environment conversion coefficient principle, and establishing an environment conversion coefficient database; based on a simulation method, building a galvanic corrosion model during dissimilar metal contact, obtaining information of potential distribution, a total current and the like of galvanic corrosion, verifying the correctness of the galvanic corrosion model, and supplementing the environment conversion coefficient database of the metal combination structure; selecting a typical dissimilar metal combination contact structure of an aircraft to perform a test, and according to a corrosion damage characterization quantity, correcting an accelerated equivalent environment spectrum of the dissimilar metal combination structure; and finally establishing accelerated corrosion equivalence theory and engineering methods of the combination structure.

The invention discloses an evaluation method for measurement uncertainty introduced by mechanism errors of a three-coordinate measuring machine. The three-coordinate measuring machine has a complex mechanical structure and multiple error sources, and the errors of the mechanical structure have the greatest influence on the uncertainty of space points and are difficult to be quantified. The measurement error model of the space points is obtained under the quasi-rigid body model of the three-coordinate measuring machine. 21 error information caused by the mechanical structure of the three-coordinate measuring machine is obtained through a calibration experiment or a calibration certificate, the distribution type is determined, and then the measurement uncertainty introduced by the mechanism errors of the three-coordinate measuring machine is evaluated through combination of the mechanism error model of the space points by utilizing a monte carlo random sampling method. The measurement uncertainty of the space points evaluated by the evaluation method for the measurement uncertainty has the characteristics of repeatability, reproducibility and stability so that the influence of 21 mechanism errors of the three-coordinate measuring machine on the measurement result is objectively reflected.

A dynamic polymer containing a combination supramolecular interaction is disclosed. The polymer contains at least two supramolecular interactions, wherein at least one of the supramolecular interactions is an ion-dipole interaction, and the dynamic polymer can prepare polymer materials with strong reversibility, rich structure and various properties through introduction of the supramolecular interactions with different dynamicity. The difference between different kinds of supramolecular interactions in the dynamic polymer makes the polymer exhibit a hierarchical dynamic reversible effect; andthe dynamic polymer can be used as a self-repair material, a toughness material, a sealing material, a force transducer material, and the like, thereby being widely applied.

The invention discloses a discrete material reinforcement composite foundation model pile, a test device and a test method, and belongs to the technical field of discrete material composite foundation simulation and test. The technical problem to be solved is to provide the discrete material reinforcement composite foundation model pile, the test device capable of testing stress and deformation along pile body height of the model pile, and a test method for parameter acquisition. According to the technical scheme adopted by the invention, the structure of the discrete material reinforcement composite foundation model pile is as follows: a packaging coiled material is formed by coiling a stepped thin plate, and the packaging coiled material is filled with a filling material; the test device comprises the model pile, a loading device, a leveling device, a force test device and a deformation test device; and the test method comprises the following steps: manufacturing the stepped thin plate into a cylindrical shape, filling a hollow part with the filling material to form the model pile; mounting a soil pressure box and a perimeter deformation measuring scale inside and outside the model pile; mounting a pressure sensor and a settlement surveying dial gauge on the top of the model pile; and carrying out vertical step loading.

The invention discloses an accelerated corrosion testing method for simulating a soil corrosion process. The method comprises the following steps of: (1) preparing a testing solution from salt and water according to components of target soil; (2) adjusting the pH (Potential of Hydrogen) value of the testing solution to a testing value by H2SO4 or NaOH, thus taking the testing solution as an impregnation medium for simulating soil corrosion, wherein the testing value is the same as the pH value of the target soil; (3) mixing diatomite, which is taken as a carrier, with an impregnation medium to prepare testing soil which is basically same as the target soil in physicochemical properties; and (4) testing a test sample in the testing soil according a pre-set testing temperature, relative humidity and testing period.

The invention provides a processing method for constructing a shop-floor digital twin and a controller. The processing method comprises the steps that requirements of stakeholders of the shop-floor digital twin are obtained through analysis according to a problem domain model constructed based on the Magic Grid methodology; according to the requirements of the stakeholders, solution domain modelsof subsystems of the shop-floor digital twin are obtained correspondingly; according to the problem domain model and the solution domain models, implementation domain models for implementing the subsystems are obtained correspondingly; and an actual measurement model, a visualization model and a simulation engine of a shop floor are acquired, and integrating is carried out to obtain the shop-floordigital twin. According to the technical scheme, the systematic shop-floor digital twin model is constructed through model-based systems engineering, a system modeling language of the system engineering, the Magic Grid methodology and a modeling tool; and the method has the characteristics of systematization, standardization, reference and reproducibility, and the system expandability, reusability and maintainability can be enhanced.

The invention discloses a polycaprolactone hybrid cross-linked network with a thermal/magnetic response two-way shape memory function and self-healing capability and a preparation method of the polycaprolactone hybrid cross-linked network. A structural formula of a polymer part of the polycaprolactone hybrid cross-linked network is as shown in the specification. In the formula, PCL represents a polycaprolactone chain segment with a number-average molecular weight of 2000-10000g/mol; and R represents a hydrocarbonyl part in a coupling agent diisocyanate. The polycaprolactone hybrid cross-linked network is a novel semi-crystalline polycaprolactone hybrid cross-linked network with the advantages of two-way shape memory function, thermal/magnetic response, reprocessibility, self-healing capability and the like. According to the preparation method, catechol group terminated polycaprolactone and Fe3O4 nano-particles are subjected to coordination crosslinking. The preparation method comprises the following specific steps: 1) preparing the catechol group terminated polycaprolactone; 2) preparing oleic acid group modified Fe3O4 nano-particles; and 3) preparing the polycaprolactone hybrid cross-linked network.

The invention discloses a reducible fallopian contraceptive element, which is composed of 3-5 concentric circular cylinders on one shaft, wherein the upper surface of shaft and upper bottom of first cylinder is on the same surface, the nickel-cemented alloy filament net is set on the external surface of cylinder and external surface of shaft, the cylinder and shaft is made of polyester film or medical polyester fibre.

The invention discloses graphene/sodium alga acid/carbon nano tube compound elastic aerogel applied in a strain sensor and a preparation method of the graphene/sodium alga acid/carbon nano tube compound elastic aerogel. The method comprises the following steps: on the basis of an idea of building a fiber-reinforced composite and adopting a carbon nano tube for improving sensitivity, mixing graphene, sodium alga acid and the carbon nano tube to form aerogel, carrying out reduction reaction in an H4N2.H2O steam atmosphere, and preparing to obtain the graphene/sodium alga acid/carbon nano tube compound elastic aerogel applied in the strain sensor. The aerogel provided by the invention has high mechanical endurance, favorable elasticity, structural continuity and high sensitivity; through controlling the matching proportion of the graphene, the sodium alga acid and the carbon nano tube, the regulation of a pore structure of the aerogel is controlled, and a more regular network is formed, so that mechanical performance and resistance change response performance of the aerogel are regulated and controlled; meanwhile, through sufficient reduction of hydrazine hydrate steam, the prepared aerogel has hydrophobic performance.

The invention brings forward a PR (proportional resonant) design method and a PI (proportional integral) controller design method for an inverter topology voltage current double-closed-loop system. According to the PR controller parameter design method, through given amplitude and a phase margin condition, a parameter variation scope satisfying a current transformer application requirement can be obtained through derivation. According to the PI controller parameter design method, through independent parameter selection and hybrid parameter selection modes, rapid response and control stability of system optimization can be realized. According to the invention, the parameter design methods can help to realize programmed parameter design, rapidly and efficiently complete system stability control, improves system stable performance, at the same time, can adjust the response speed and the control precision according to actual demands of application occasions, and satisfies the on-load high-quality power supply requirement of an inverter typology.

The invention discloses a carboxyl-functionalized rubber cross-linked elastomer capable of being repeatedly processed and a preparation method thereof. The carboxyl-functionalized cross-linked elastomer is prepared by mixing and vulcanizing the following raw materials in parts by weight: 100 parts of carboxyl-functionalized rubber, 0.1-50 parts of a cross-linking agent, and 0-100 parts by weight of a transesterification catalyst. The preparation method comprises the following step: mixing and vulcanizing the above components according to the desired dosages to obtain the carboxyl-functionalized cross-linked elastomer capable of being repeatedly processed. The novel, effective and green cross-linking system can avoid the use and generation of toxic chemical substances and the generation ofunpleasant odor, allows the repeatable processability of thermoplastic elastomer to be obtained, and can solve the problem that the traditional rubber is difficult to recycle repeatedly.

The invention discloses an energy absorption method based on a dynamic polymer. The energy absorption method employs the dynamic polymer containing at least one second set supramolecular interaction and comprising an optionally first set supramolecular interaction for performing energy absorption, wherein the second set supramolecular interaction includes an ion interaction, an ion-dipole interaction, a subject-object interaction, an ion hydrogen bond interaction, a metallophilic interaction, a dipole-dipole interaction, a halogen bond interaction, a cation-[pi] interaction, an anion-[pi] interaction, a benzene-fluorobenzene interaction, a [pi]-[pi] stacking interaction and a free radical cation dimerization interaction, and the first set supramolecular interaction includes a hydrogen bondinteraction, and a metal-ligand interaction. The dynamic polymer can exhibit energy dissipation characteristics by virtue of the dynamic reversibility of the supramolecular interaction, and can be used as an energy absorbing material to provide functions of good damping, shock absorption, sound insulation, noise reduction, impact resistance, and the like.

The invention relates to a simple statistics, analysis and selection method of various influencing factors in urban public transportation special lane planning and designing. The method comprises steps that: (1) a planned area is determined; (2) buildings in the planned area are divided according to administrative functional divisions; (3) the indexes are quantified; (4) specific values of corresponding indexes of the administrative functional divisions are determined; (5) a decision is made, and road segments used for arranging the special lanes are selected; and (6) in-site verification of the decision made in the step (5) is carried out. According to the invention, urban public transportation special lane planning and designing works determined by human factors are changed into an objective technical scheme which is not influenced by human factors, and which has reproducibility. The urban public transportation special lane planning and designing method provided by the invention is advantaged in that: with the method, the extraction of city common features is realized; a relationship model of city features and public transportation special lane configurations is established; the correlation of urban public transportation special lane planning and designing can be realized; and the method is duplicable.

The invention provides a method for measuring the content of luteolin in lamiophlomis rotata by liquid chromatography. The method comprises the following steps that the octadecylsilane chemically bonded silica is taken as a filling agent and the acetonitrile-tetrahydrofuran-0.5 percent of phosphoric acid is taken as the mobile phase; under the chromatographic conditions that the detected wavelength is 350 plus or minus 2 nm, the column temperature is 25 DEG C to 50 DEG C, the flow velocity is 0.5 ml/min to 1.5ml/min and the sample size is 5 mul to 20 mul, the liquid chromatography analysis is carried out on the prepared test solution, the chromatographic peak area of the corresponding position of the reference solution is measured, and the corresponding content is calculated according to the standard curve. The measuring method has the advantages of high precision, good reproducibility, high recovery ratio and accurate measuring result, improves the quality standard of the pharmaceutical preparation containing the lamiophlomis rotata herb, facilitates the quality stability and the quality control of the industrial production and ensures the security and the validity on medication use by people.