1862 results about "Screen printing" patented technology

The utility model discloses a back contact battery and a photovoltaic assembly, and relates to the field of photovoltaic technology. The method is used for reducing the process difficulty of forming a patterned first transparent conductive layer during mass production and is beneficial to prolonging the service life of a screen printing plate for manufacturing the patterned first transparent conductive layer. The back contact battery comprises a semiconductor substrate, a first doped semiconductor part, a second doped semiconductor part and a first transparent conductive layer. The second doped semiconductor portion is disposed on the second region and extends to cover the first doped semiconductor portion in the overlapping region. The first transparent conductive layer is disposed on the second doped semiconductor portion. A partial region in the overlapping region is a reverse electric leakage region. And a first transparent conductive layer extending from the second region is arranged in the reverse electric leakage region. The side line of the side, close to the first area, of the first transparent conducting layer is a first side line, the first side line is of a periodically repeated convex-concave alternating structure, and transition lines between convex and concave in the convex-concave alternating structure are not parallel to the first direction.

The invention discloses a capacitor defect detection method based on a YOLOv5 model, and the method comprises the following steps: 1, training the YOLOv5 model through employing a first data set, and obtaining a pre-training model; 2, training the pre-training model by adopting the second data set to obtain a capacitance defect detection model; 3, inputting a picture into the capacitance defect detection model to obtain a target detection defect; and 4, screening the target detection defects by adopting a multi-threshold setting mechanism to obtain a final target defect type. According to the invention, various possible defects of the capacitor product in the silk-screen printing process can be accurately identified and measured.

The invention relates to the technical field of screen printing plates, in particular to a printing screen printing plate, a manufacturing method, a solar cell and a photovoltaic module. The printing screen comprises a screen body and a reinforcing part. A printing groove extending in the first direction is formed in the screen printing plate body and penetrates through the thickness direction of the screen printing plate body. The reinforcing part is arranged at the position, provided with the printing groove, of the screen printing plate body, the reinforcing part is arranged corresponding to the part of the printing groove, at least part of the reinforcing part is hollowed out, and the hollowed-out position of the reinforcing part is communicated with the printing groove. The printing screen has the advantages of high printing quality and high structural strength, can print continuous current collection grid lines, facilitates current collection of the current collection grid lines, and can meet the process and test requirements of electrifying a solar cell.

The invention discloses conductive silver paste for a solar cell and application of the conductive silver paste, and belongs to the technical field of conductive silver paste. According to the invention, the prepared silver paste is printed on a silicon wafer cell in a silk-screen printing manner, so that the good rheological property of printing can be obtained. And a rheometer is introduced for testing, and an SEM scanning electron microscope is introduced for checking the surface appearance of the silver grid line. The invention discloses a TOPCon silicon wafer for a silicon solar cell, which comprises the following components in percentage by weight: 82-90% of silver powder, 20-30% of glass powder and 20-30% of organic carrier. 2-5% of glass powder; and 8-13% of an organic carrier. The conductive silver paste with good rheological property is prepared by using a mixture of polyamide wax and hydrogenated castor oil in a mass ratio of 1: 1 as a thixotropic agent. The main grid silver paste for the silicon solar cell provided by the invention can be well matched with step-by-step printing of a cell piece, different proportions of the binder and the thixotropic agent are used, the photoelectric conversion efficiency is high, the peeling strength of the main grid is high, and the step-by-step printing main grid paste requirements of current different types of paste and cell pieces can be well met.

The invention relates to the field of touchpad film materials, and discloses a preparation process of a touchpad mylar and a product. The preparation process of the touch panel mylar comprises the following steps: S1, transferring a texture layer on one side surface of a base material layer by using UV transfer printing glue; s2, carrying out three times of silk-screen printing on the other side surface of the base material layer to sequentially form a first metal ink layer, a second metal ink layer and an insulating ink layer; s3, performing vacuum coating on the texture layer to form a wear-resistant anti-fingerprint layer; and S4, adhering an adhesive layer with a release film to the insulating ink layer, and performing die cutting to obtain the touch panel mylar. The prepared touchpad mylar has good metal texture, wear resistance, smoothness and insulativity, the ink layer and the base material layer are stably attached, the ink layer is not prone to falling off and layering under the use conditions of long-term environment temperature and frequent screen touching of the touchpad mylar, and the touch sensitivity is good.

The present application belongs to the field of diamond preparation, and discloses a high-quality single-crystal diamond preparation method for removing polycrystal defects. Through screen printing and plasma-assisted etching, the (100) surface around the black point-shaped polycrystal is directionally etched by cerium oxide, and a square groove is etched. Then, the slurry of iron oxide or nickel oxide is printed by screen printing, the black point-shaped polycrystal is covered with the slurry, and the black point-shaped polycrystal is removed by plasma-assisted etching. Then, the etched groove is filled by a horizontal growth process, so that the growth defects can be removed, and high-quality single-crystal diamond can be obtained. The present application can greatly reduce the waste rate of single-crystal diamond products and improve the utilization rate of single-crystal diamond. The present application is beneficial to saving production cost and improving efficiency.

The utility model discloses a silica gel button screen printing mould, which comprises a mould plate and a cover plate, the upper surface of the mould plate is provided with a groove capable of placing a workpiece, the cover plate is supported on the upper surface of the mould plate and shields the groove, the cover plate is provided with a positioning through hole, and the rear part of the cover plate is hinged with the mould plate so that the cover plate can be turned backwards to be opened. The rear side edge of the cover plate is provided with a pressing part, and the rear side edge of the pressing part is located behind the rotating axis of the cover plate. Due to the adoption of the design, when a user needs to open the cover plate, the cover plate can be directly opened by knocking the upper surface of the edge of the rear side of the pressing part by adopting a tool and certain force, and convenience and rapidness are achieved.

The invention discloses a chromium-doped indium oxide-based high-temperature heat flux sensor and a preparation method thereof, a screen printing technology is adopted, a slurry formula and printing process parameters are optimized, a thermopile structure is accurately formed on a high-temperature-resistant ceramic substrate, and then a thermopile and a thermal resistance layer are subjected to step-by-step high-temperature sintering treatment, so that the chromium-doped indium oxide-based high-temperature heat flux sensor is obtained. And firm combination between the thin film and the substrate and densification of a microstructure are ensured. The finally prepared sensor has excellent high-temperature oxidation resistance and long-term working stability, is stable and reliable in thermoelectric output signal, meets the strict requirements of aerospace, energy power and other fields on high-temperature heat flow measurement, is suitable for heat flow monitoring in high-temperature combustion environments, high-speed pneumatic heating and other scenes, and has wide application prospects. And a reliable test means is provided for design and performance evaluation of the thermal protection system in an extreme environment.

The invention relates to the technical field of water treatment, in particular to a silk-screen printing tempered glass panel production wastewater recycling device which comprises a treatment box, a first sleeve and a tubular filter element, the first sleeve is coaxially and fixedly arranged in the treatment box, an opening of the first sleeve faces upwards, and the tubular filter element is coaxially arranged in the first sleeve; the device further comprises a rotational flow assembly, a suction assembly and a driving assembly, the rotational flow assembly is arranged in the treatment box and comprises a spiral guide plate, the tubular filter element is arranged in the spiral guide plate, the suction assembly is arranged on the treatment box, and the driving assembly is arranged in the treatment box and connected with the spiral guide plate. Through the arrangement of the tubular filter element, the rotational flow assembly, the suction assembly and the driving assembly, the surface of the tubular filter element is subjected to self-cleaning treatment by utilizing high shear force generated by rotational flow of the wastewater in cooperation with glass powder while the wastewater is filtered, and normal operation of the wastewater recycling process is ensured on the basis of improving the filtering effect.

The invention relates to the technical field of textile materials, and particularly discloses a fabric capable of improving thermal protection performance and a preparation method and application of the fabric. Nano-scale aluminum oxide; polyethylene glycol diacrylate; a closed type waterborne polyurethane emulsion; a silane coupling agent containing a vinyl group; a photochromic dye; a thermochromic dye; the preparation method comprises the following steps: S1, preparing composite slurry; s2, applying the composite slurry to the surface of a fabric base material in a dot matrix form by adopting a screen printing process to form a coating; s3, the coating is irradiated with ultraviolet light; and S4, carrying out baking treatment on the fabric subjected to the ultraviolet light curing treatment at the temperature of 140-160 DEG C. According to the invention, the polyethylene glycol diacrylate, the closed waterborne polyurethane and the vinyl-containing silane coupling agent are adopted to form an interpenetrating polymer network structure in situ, so that when the obtained fabric is rubbed or washed and the like, the coating is not easy to crack and peel off.

The invention provides fine grid slurry and a preparation method thereof, a solar cell and a photovoltaic module. The fine grid slurry is prepared from the following components in parts by weight: 50 to 65 parts of silver powder, 15 to 25 parts of silver modified nickel-coated copper powder, 2 to 5 parts of alloy powder, 2 to 5 parts of glass powder, 0.5 to 2 parts of aluminum oxide, 10.5 to 17.5 parts of organic carrier and 0.5 to 1.8 parts of additive, the silver-modified nickel-coated copper powder comprises a copper inner core, a nickel coating layer and a silver coating layer, wherein the outer surface of the copper inner core is sequentially coated with the nickel coating layer and the silver coating layer from inside to outside. The alloy powder comprises Ni element, B element and Si element; the aluminum oxide is spherical nano aluminum oxide; the organic carrier comprises organic silicon modified acrylic resin and epoxy resin. According to the fine grid slurry, the raw material cost is remarkably reduced, the process compatibility is good, silk-screen printing can be better supported, and the photoelectric conversion efficiency of a photovoltaic module can be better improved.

An apparatus, system, and method for providing a moisture supplementation detection device. The moisture replenishment detection device includes: a flexible substrate having a circuit screen-printed therein, the circuit including a plurality of conductive ink layers and a dielectric ink layer; a sensor on the flexible substrate, wherein the sensor is capable of detecting element data indicative of a characteristic of sweat; an untreated chromatographic paper placed in contact with the skin of the user and capable of wicking sweat from the skin to the sensor along the micro-sized fluid channel; and a Bluetooth antenna on the flexible substrate and in communication with the sensor, and capable of wirelessly communicating the element data to an application capable of indicating to the user the user the suitability of moisture replenishment based on the element data.

The full-automatic efficient assembly production line comprises a main body structure, a plurality of guiding and conveying structures, a plurality of stirring structures and a discharging structure, the guiding and conveying structures are detachably arranged on the main body structure, the stirring structures are detachably arranged on the main body structure, and the discharging structure is arranged on the main body structure. The solar photovoltaic screen printing device relates to the technical field of solar photovoltaic equipment, and has the beneficial effects that the solar photovoltaic screen printing device is high in adaptability, capable of being compatible with photovoltaic screens of multiple specifications, high in practicability, high in practicability and high in practicability. The welding material conveying position accurately corresponds to different welding point positions of the screen printing plate; and the automation degree is high, continuous welding machining is achieved, manual intervention is reduced, positioning is accurate, the position deviation of soft soldering tin is reduced, feeding is stable, and the requirement for multiple welding point positions is met.

The invention relates to the field of photovoltaic technology, in particular to a solar cell and a preparation method thereof. The solar cell comprises a cell piece and a welding material. A plurality of welding spots are formed on the surface of the battery piece; the welding material forms a plurality of welding parts at the welding spots, the welding parts comprise at least three first welding parts and second welding parts, the contour shapes of the first welding parts are different from the contour shapes of the second welding parts, and the first welding parts are used for being recognized by camera equipment to position the positions of the battery pieces. The first welding part on the welding spot is used as the Mark point, so that positioning can be carried out when a new screen printing plate is replaced, the position of the new screen printing plate is convenient to adjust, the new screen printing plate corresponds to the position of the battery piece, the Mark point can be prevented from being directly arranged on the auxiliary grid, and subfissure of the solar battery and corrosion of the auxiliary grid are reduced.

The invention provides a preparation method of colored glaze glass, which relates to the technical field of glass processing and comprises the following steps: 1) coating a colored glaze pattern bottom layer which is strongly combined with a glass surface by adopting a silk-screen printing process, and drying; 2) coating a colored glaze surface layer completely covering the colored glaze pattern bottom layer on the glass surface on which the colored glaze pattern bottom layer is formed, strongly combining the coated colored glaze surface layer with the colored glaze pattern bottom layer and weakly combining with the glass plate surface, drying and then carrying out full toughening treatment; and 3) removing the colored glaze surface layer outside the overlapped area with the colored glaze pattern bottom layer and residues on the surface of the glass substrate through a cleaning machine to realize the colored glaze glass with the double-color pattern colored glaze effect, and the method has the advantages of low cost, good effect and the like.

The invention belongs to the technical field of semiconductors and solar cells, and discloses a preparation method of a low-cost electroplating copper grid line heterojunction solar cell. In order to solve the problems that the cost is high when a metal electrode in a heterojunction solar cell is prepared through traditional screen printing low-temperature paste, and efficiency improvement is limited due to the fact that a narrower grid line is difficult to prepare in a screen printing mode, in-situ pretreatment is carried out on an N face to carry out surface roughening; then, copper electroplating is carried out in a light-induced horizontal electroplating mode to prepare an N-face copper electrode; and then turning over the battery piece to carry out P-surface copper electroplating so as to prepare the heterojunction solar battery with double-surface copper-electroplated grid lines.

The utility model relates to the technical field of silk-screen product detection, in particular to a silk-screen product detection device. The silk-screen product detection device is sequentially provided with a card issuing mechanism, a pre-acceleration mechanism, a detection mechanism, a transmission mechanism, a waste rejecting mechanism, a good product transmission mechanism and a vertical material receiving mechanism along a product advancing route. According to the utility model, the design is reasonable, the operation is simple and convenient, printed matters are separated one by one through the card issuing mechanism, are transmitted through the pre-acceleration mechanism, are photographed through the detection mechanism, are confirmed to have defective products and are rejected through the waste rejecting mechanism, and good products are transmitted to the vertical material receiving mechanism through the good product transmission mechanism; the detection precision is high, the detection speed is high, equipment operation is stable, the mechanization degree is high, labor is saved, and meanwhile the product quality can be improved.

The invention belongs to the technical field of colored glazed glass, and particularly relates to colored glazed glass and a preparation method thereof. The preparation method of the colored glazed glass comprises the following steps: (1) selecting a glass sheet, cleaning, cutting and edging for later use; (2) printing glaze on the outer surface of the glass treated in the step (1) by adopting a silk-screen printing process, and drying; (3) carrying out toughening treatment on the glass treated in the step (2); (4) soaking the glass treated in the step (3) in an ethanol water solution containing a silane coupling agent, washing and drying for later use; and (5) taking two pieces of glass treated in the step (4), coating the inner surfaces of the two pieces of glass with a sizing material, and curing to obtain the colored glaze glass. The adhesive film of the colored glazed glass has good adhesive property and mechanical property, prevents the glass from being broken and splashed, and can resist the erosion of the external environment, maintain the adhesive property and mechanical strength of the adhesive film and prolong the service life of the colored glazed glass.

The invention relates to the technical field of printing screens, in particular to a printing screen and a manufacturing method thereof. The printing screen comprises a screen body and a filiform structure. A printing groove is formed in the screen printing plate body and penetrates through the screen printing plate body in the thickness direction of the screen printing plate body, and the length direction of the printing groove is the first direction. The filamentous structure is arranged at the position of the printing groove on the screen printing plate main body; in the first direction, the filiform structure corresponds to a local area of the printing groove; the filiform structure extends along a second direction, and the second direction intersects with the first direction. According to the screen printing plate, the silk-shaped structure is locally arranged, so that the screen printing plate body has high structural strength and long service life, the rest area, not provided with the silk-shaped structure, of the printing groove has good slurry passing ability, and the printing appearance of grid lines is good.

The utility model discloses automatic production equipment for an air cushion product assembly, and relates to the field of air cushion production. Comprising an unwinding station, a punching conveying frame, a punching discharging station, a first welding machine, a lamination conveying line, a material moving conveying frame, a screen printing machine, a drying machine, a main traction roller, a second welding machine, a punching slitting station, a multi-strip-in-one mechanism, a third welding machine and transverse cutting receiving equipment. Materials are output through the unwinding station; the steps of air tap hole punching, air tap assembling, first-time welding, printing and spraying, drying, second-time welding, slitting, laminating, third-time welding, cutting and the like are completed through a punching and discharging station, a first welding machine, a screen printing machine, a drying machine, a second welding machine, a punching and slitting station, a multi-strip-in-one mechanism, a third welding machine and transverse cutting and receiving equipment. In the whole production process, only manual point positions need to be arranged at the feeding and discharging positions, manual participation is reduced, time and labor are saved, meanwhile, fatigue caused by long-term work of workers is avoided, the production efficiency is high, and the error rate is low.

The invention relates to a conductive material containing metal or alloy and a method specially suitable for manufacturing an HBC solar cell, in particular to copper paste, a preparation method thereof and an HBC solar cell metallization method, and aims to solve the problems that the production cost is high, the cost is low and the like due to the fact that copper powder is coated with silver or tin in an existing raw material for preparing a grid line. And pure copper powder is easy to oxidize in the air, so that the conductivity is reduced, and the grid line is poor in adhesive force and easy to fall off. The copper paste comprises copper powder and tin powder, and the copper powder is pure copper powder without a coating layer on the surface; the problem that direct silk-screen printing copper paste is poor in adhesive force is solved by constructing the transition layer, and due to the fact that silver and a coating layer are not adopted, the metallization cost of the HBC solar cell can be remarkably reduced.

The invention discloses a template matching defect detection method and system for BC battery piece silk-screen printing, belongs to the technical field of defect detection, and aims at solving the problems that an existing detection method is weak in pertinence and low in positioning precision, and the general trend of defects is difficult to recognize. The method comprises the following steps: acquiring a template image, marking a calibration point and constructing a calibration data set; generating a functional area mask for the functional area of the template image, and obtaining a functional area template sub-image; an observation image is collected and cut into observation sub-images, calibration points are matched, an affine mapping matrix is generated and corrected, and a calibration observation image aligned with the template image is obtained; comparing the calibration observation image with the template image to generate an effective difference image, and determining an abnormal region; and combining a defect feature library to identify defect types, dividing grades, and retrieving abnormal functional area observation sub-graphs to judge defect general trends. According to the invention, accurate positioning, classification and trend identification of BC battery piece printing defects are realized, the detection efficiency and reliability are improved, and data support is provided for production optimization.

The invention relates to the technical field of layered products, and particularly discloses a heat-insulating and wave-absorbing skin material as well as a preparation method and application thereof. The heat-insulating and wave-absorbing skin material is of an integrated layered structure based on an aluminum oxide-mullite system, comprising a functional gradient layer with double gradients of fiber density and aperture, an impedance matching layer with a gradient dielectric constant, a resonance wave absorbing layer with a periodic dot matrix formed by silicon carbide and aluminum oxide core-shell microspheres, and a heat insulation layer with a nano-micron double-scale pore structure. According to the preparation method, a green body is constructed mainly through tape casting and silk-screen printing, and then co-sintering integrated forming is carried out. The material has the excellent characteristics of high temperature resistance, toughness, efficient heat insulation, broadband wave absorption and the like, and is suitable for extreme environments such as hypersonic aircraft skin and the like.

Solid powder and an organic carrier are matched according to the mass ratio of (82-86): (14-18), silver powder and titanium dihydride powder which form the solid powder are matched according to the mass ratio of 96: 4, and a solvent, a thickening agent and a dispersing agent which form the organic carrier are matched according to the mass ratio of (91-95): (2-6): (1-5). According to the Ag-Ti soldering paste, silver powder and titanium dihydride powder serve as solid phases and are matched with a specific organic carrier, by optimizing the rheological property and the vacuum brazing technology, TiH2 is decomposed to generate active Ti atoms, the active Ti atoms react with AlN ceramic to generate a continuous TiN reaction layer, and high-strength and low-defect connection of an AlN ceramic base material and an oxygen-free copper metal copper layer is achieved; a traditional Cu element is abandoned in a soldering paste system, generation of a brittle phase is avoided, and the reliability of a connector under the extreme working condition is improved; when applied to preparation of the ceramic copper-clad plate, the film has the advantages of strong silk-screen printing adaptability, uniform film thickness and low voidage.

The utility model discloses a device and a method for calibrating the parallelism of a screen printing scraper and a printing plane. Two ends of the scraper are respectively provided with a micrometer head for adjusting the balance of two ends of the scraper; the calibration strips arranged on one side of the printing platform in parallel correspond to the scraper above the calibration strips. The lower part of the calibration strip is centrally supported on a rotating fulcrum, two pressure sensors are symmetrically distributed on two sides of the rotating fulcrum and are correspondingly arranged below two ends of the calibration strip, and the pressure sensors are in signal connection with a display screen; the rotating fulcrum and the pressure sensor are installed on the bottom plate through the lifting base and the lifting driving piece, and the bottom plate is provided with a horizontal adjusting assembly. The parallelism of the scraper and the printing plane is not repeatedly debugged by a manual visual inspection mode; accurate quantitative adjustment can be directly carried out according to the pressure value displayed by the display screen, the parallelism of the scraper and the printing plane can be rapidly calibrated at a time, the calibration work is accurate and reliable, the calibration result is stable, the calibration operation difficulty is effectively reduced, and the calibration work efficiency is greatly improved.

The invention relates to the technical field of screen printing plates, in particular to a printing screen printing plate, a manufacturing method and a solar cell. The screen printing plate comprises a screen printing plate layer, the screen printing plate layer is provided with a printing groove extending in the first direction, the printing groove penetrates through the screen printing plate layer in the thickness direction of the screen printing plate layer, the printing groove comprises a plurality of first groove sections and second groove sections which are alternately connected in the first direction, and the maximum width of the first groove sections in the second direction is larger than that of the second groove sections in the second direction; the minimum width of the first groove section in the second direction is larger than or equal to the maximum width of the second groove section in the second direction, and every two of the first direction, the second direction and the thickness direction of the screen printing plate layer are perpendicular to each other; the groove depth size of the first groove section in the thickness direction of the screen printing plate layer is smaller than the groove depth size of the second groove section in the thickness direction of the screen printing plate layer. The grid line printed by the printing screen not only integrates the welding performance of the assembly and the low resistance performance of the grid line, but also can reduce the cost.

The invention provides a double-sided conduction AMB ceramic substrate and a manufacturing method thereof, and belongs to the technical field of ceramic substrates for power modules. The manufacturing method comprises the following steps: punching holes in a ceramic substrate; filling conductive metal slurry into the holes by using a screen printing machine and sintering at high temperature; brazing materials are printed on the two faces of the ceramic; the copper layer and the ceramic layer are laminated and then subjected to vacuum brazing; manufacturing a circuit; etching the solder layer of the AMB line groove to expose the ceramic; performing surface treatment; laser cutting; and conducting test and inspection. Two-sided conduction is realized through metal slurry hole filling and a high-temperature sintering process, the problem that conduction of an upper copper layer and a lower copper layer of a traditional AMB ceramic substrate cannot be realized is solved, the assembling size of a power module is reduced, the three-dimensional integration requirement of a high-end module is met, meanwhile, the technological process is reasonable, and the production cost is reduced.

The invention discloses a sweat induction and multi-parameter detection integrated sensor and a preparation method and application thereof, and belongs to the technical field of flexible biosensing, a PDMS flexible substrate is adopted to construct a multi-layer integrated structure, the sweat induction and multi-parameter detection integrated sensor comprises a sweat guide layer, a sweat collection layer, a detection electrode layer and a micro-fluidic chip layer, sweat secretion is promoted by accurately controlling the temperature to be less than or equal to 40 DEG C; the detection electrode layer adopts a silk-screen printing process to prepare a three-electrode system, comprises a specifically modified glucose working electrode and a beta-hydroxybutyric acid working electrode and can synchronously detect the concentration of glucose and beta-hydroxybutyric acid in sweat, and the micro-fluidic chip layer is integrated with a Bluetooth transmission module to realize real-time wireless transmission of detection data to a mobile terminal; the biosensor has the advantages of being good in biocompatibility, high in detection sensitivity and comfortable to wear and can tolerate bending with the curvature radius larger than 5 mm, and a non-invasive and continuous metabolism monitoring solution is provided for diabetes management.

The invention relates to the technical field of industrial Internet of Things, edge calculation, silk-screen and the like, and provides a substrate silk-screen method and equipment based on an intelligent silk-screen unit, and the method comprises the steps: configuring a feeding mechanism, a dust removal mechanism, a pre-printing alignment mechanism and a printing mechanism which are connected in sequence, and establishing an industrial Internet of Things information sensing layer and an edge gateway which are in two-way communication with the feeding mechanism, the dust removal mechanism, the pre-printing alignment mechanism and the printing mechanism. Order and formula data are received through a gateway, multi-source sensing point location real-time data are fused, a production model with a unified time reference and batch identification is constructed, and process parameters are dynamically issued. And during feeding, the model and the warping degree of the substrate are automatically recognized, and dust removal parameters are synchronously adjusted. In the printing process, screen tension, scraper stress, motor current and printing ink rheological property are monitored in real time and fused to obtain a printing ink comprehensive rheological characteristic value, scraper parameters and an ink return time sequence are cooperatively regulated according to the printing ink comprehensive rheological characteristic value, and a printing quality estimated value is output. According to the method, collaborative optimization and quality estimation of the whole printing process are achieved, and the production adaptability and consistency of product printing are improved.

The invention provides construction of an electrochemical biosensor based on a fucoidin hydrogel microneedle and application of the electrochemical biosensor in online monitoring of uric acid, and relates to the technical field of biosensors. According to the micro-needle, Gantrez S-97 and PEG are subjected to copolymerization crosslinking to form a hydrogel main body, fucoidin is introduced for blending modification, a three-dimensional network structure is constructed by utilizing a high-temperature esterification reaction for regulating and controlling pH, and the super-expansion hydrogel micro-needle with high swelling property and good biocompatibility is formed. The microneedle can rapidly collect a skin interstitial fluid sample, and then through a screen printing electrode (SPE) platform, carboxylated MWCNTs are used for modifying an electrode and immobilizing uricase to construct an enzyme sensor. Hydrogen peroxide generated by catalyzing uric acid on the surface of the electrode participates in electrochemical reaction, and an output signal is used for real-time detection of uric acid concentration. The device integrates minimally invasive sampling and high-sensitivity electrochemical detection, has the advantages of quick response, simplicity and convenience in operation, good biocompatibility and the like, and is suitable for application scenes of continuous monitoring of uric acid, chronic disease management and the like.