14 results about "Electronic industry" patented technology

This invention relates to a natural fiber reinforced composite material sheet and its manufacturing method, applicable to the automotive, drone, architectural decoration, and consumer electronics industries. The sheet uses natural fiber fabrics such as flax, hemp, jute, sisal, or bamboo fiber as the reinforcing layer, which is cured with a resin matrix. The reinforcing layer can consist of 1 to 10 layers of natural fiber fabric, and plain weave, twill weave, satin weave, or multi-axial weave can be used as needed to obtain good tensile, bending, and interlayer bonding properties. This invention improves fiber impregnation uniformity and reduces moisture absorption through resin system modification, fiber surface treatment, and vacuum-assisted curing, overcoming the shortcomings of natural fiber composite materials in terms of interfacial bonding, dimensional stability, and process consistency. The resulting sheet is lightweight, has high damping, good electromagnetic wave transmission, and is environmentally friendly and low-carbon, and can be used in battery protection panels, drone arm tubes, sound insulation panels, and automotive interior cladding.

This invention relates to a self-oscillating closed-loop voltage regulator circuit, comprising a self-oscillating circuit, a primary power supply undervoltage indicator circuit, a secondary power supply undervoltage indicator circuit, a key valid indicator circuit, a power amplifier circuit, and a boost control circuit. The self-oscillating circuit outputs a fixed-frequency reference square wave signal. Undervoltage, overvoltage, and key valid indicator signals are passed through an AND gate to output a variable-frequency square wave signal. This variable-frequency square wave signal is then passed through a complementary pull-up circuit to increase the driving capability. The complementary output variable-frequency square wave controls the boost circuit. When the battery is low or the secondary power supply is undervoltage, the output frequency of the self-oscillating circuit controls the switching of the boost circuit to achieve rapid voltage boost. When the battery and secondary power supply voltages are normal, the boost control circuit is shut down. This effectively ensures stable operation under normal control conditions and is particularly suitable for the automotive electronics industry.

The application discloses a Tibetan speech recognition method fusing tone perception hybrid experts and retrieval error correction, and belongs to the technical field of signal processing in the electronic industry. The specific steps of the recognition method are as follows: I: Tibetan speech signals are acquired, and corresponding log-mel spectrogram features and fundamental frequency contour features are extracted; II: the tone gating weight is calculated based on the fundamental frequency contour features, and is dynamically routed to the corresponding hybrid expert network to acquire dialect-independent acoustic hidden layer features. The application effectively solves the model interference problem caused by the presence or absence of tones among multiple dialects, avoids the parameter conflict between tone dialects and non-tone dialects, significantly improves the recognition performance of multi-dialect hybrid training, corrects the homonym heterograph error commonly existing in Tibetan, improves the performance of multi-dialect Tibetan speech recognition, can be used for converting Tibetan speech into characters, and is helpful for protecting and mining Tibetan culture.

The application discloses an epoxy resin composite Sn-Bi-Sb lead-free soldering paste and a preparation method thereof, and belongs to the field of soldering materials of metal materials and metallurgy. The epoxy resin composite Sn-Bi-Sb lead-free soldering paste is composed of 3-6% of a mixture of an epoxy resin, a curing agent and an accelerator, 1.5-5.0% of nano silver paste, and the balance of a commercial Sn-Bi-Sb soldering paste. In the mixture of the epoxy resin, the curing agent and the accelerator, the mass percentage of each component in the composition is epoxy resin: curing agent: accelerator = 100: 70-85: 4-9. The epoxy resin composite Sn-Bi-Sb lead-free soldering paste has good wetting and spreading performance, can significantly improve the shear strength and drop resistance of a soldering joint, and can be used for reflow soldering of some products in the electronic industry which have specific requirements for temperature and drop resistance.

This invention discloses a method and system for identifying wastewater from the electronics industry based on pollutant characteristic patterns, relating to the field of environmental monitoring and wastewater analysis technology. The method includes: acquiring pollutant response signals and generating original spectra through solid-phase extraction enrichment and liquid chromatography-mass spectrometry detection; extracting concentration and abundance data of organic and inorganic fluorine at multiple time points, constructing ratio evolution trajectories, and identifying transformation nodes; splitting the original spectra by transformation nodes, extracting peak distribution patterns of short-chain perfluorinated compounds, and comparing differences between adjacent spectra segments to generate peak migration characteristics; measuring wastewater salinity, screening pollutant response signals with different degrees of salinity inhibition for source tracing calibration; temporally associating transfer paths with transformation nodes, determining the contribution of transfer paths based on the frequency of transformation node occurrences, and generating source tracing feature spectra; and comparing with a pre-built feature library to output the identification results. This invention achieves high-precision identification and accurate source tracing of wastewater from the electronics industry.

The application discloses a kind of super strong overvoltage protector of failure safety, it is related to electronic product field, including switching device and clamping device;Switching device and clamping device are packaged as a whole, located in the inside of shell;The inside of shell is provided with lead wire, one end of lead wire is connected with the combination of switching device and clamping device, the other end of lead wire is connected with electrode outside shell, and the welding spot of lead wire and lead wire is used as the failure open circuit device of overvoltage protector.The product size of the present application is miniaturized, and it is patching;The working voltage of electrical performance is high, and the fault tolerance of working voltage is high;Surge capacity is strong;Residual voltage is low, and the protection effect is good;Energy saving and environmental protection, that is, the electrical performance of overvoltage protector, under high working voltage, the leakage current is low, in high temperature environment, the temperature rise of product is small, and the reliability of long-term use is high;Failure open circuit;It has the extensive application demand and broad prospect of adapting to the development trend of present electronic industry.

The utility model discloses an explosion -proof filter cartridge dust remover, including portable casing, be provided with the filter cartridge chamber, gas pocket room, fan room and filter chamber that communicate in proper order in the casing, be equipped with the filter cartridge in the filter cartridge chamber, the outside of filter cartridge chamber is equipped with the air inlet cover, be equipped with pulse soot blower in gas pocket room, be equipped with fan in fan room, be equipped with filter in filter chamber, the top of filter chamber is equipped with the air outlet plate, the dust remover still includes parameter detection unit, and parameter detection unit is electrically connected with fan and pulse soot blower respectively, and parameter detection unit is used for detecting the operation parameter in the casing, and according to operation parameter control fan and pulse soot blower, the utility model discloses can be applicable to lithium electricity, pharmaceutical, carbon black, food, electronic industry etc. the dust environment management of explosibility, can control according to operation parameter, in order to remove the dust on the filter cartridge surface in time, can handle in time when temperature appears exception, has promoted the explosion -proof performance, and has the advantage that cost is low, automatic monitoring.

The application discloses a kind of composite innovation radiation index quantitative evaluation method, including the collection of electronic industry's multi-source heterogeneous data and electronic development file, the multi-source heterogeneous data and the electronic development file are preprocessed;By the multi-source heterogeneous data, the electronic development file is cited and is traced to obtain reference data, and according to the reference data, high influence data set is obtained by clustering screening;From science, technology and industry, the high influence data set is quantitatively analyzed, and influence quantitative index is obtained, and according to the influence quantitative index, composite innovation index is obtained by composite quantification;According to the composite innovation index, construct the quantitative evaluation model of composite innovation radiation index based on double circulation, cooperation game strategy is used to optimize the quantitative evaluation model of composite innovation radiation index, and the quantitative evaluation data to be quantified is input into the quantitative evaluation model of composite innovation radiation index, and the output quantitative evaluation result.

This invention discloses an automated sorting device and method for industrial batch bolts based on geometric features, belonging to the field of automated sorting technology for industrial fasteners. The device includes a bolt head diameter sorting module, a bolt diversion and conveying module, a bolt spatial posture control module, a bolt thread length sorting module, and a housing. The head diameter sorting module uses a centrifugal multi-diameter slotted screen for grading; the posture control module uses a magnetic roller and a geometric guide to straighten the bolts into a vertical position; and the length sorting module uses a gradient impact rod and a rotating clamping roller to sort the thread length. The method sequentially realizes centrifugal diameter sorting, diversion and conveying, posture straightening, and gradient length sorting, enabling automated sorting of bolts of various diameters and lengths in a single operation. This invention features high integration, high sorting accuracy, and stable operation, effectively improving the efficiency of industrial bolt sorting, reducing labor costs, and is suitable for batch bolt sorting scenarios in machinery, automotive, and electronics industries.

The application discloses a terminal control near bomb warhead fuze setting and detonating system and belongs to the field of electronic industry. The patent comprises a laser irradiator outside a cannon tube, a coding communication mechanism, a laser receiver arranged at the bottom of a cannon warhead, an electronic near explosion fuze in the cannon warhead and a search and fire control system. The system can detonate the ammunition near the enemy target by transmitting the coded laser from the launching platform or the independent fire control platform, so that the low-cost and widely-used air explosion ammunition precise near explosion control effect which is difficult to be considered in the known art can be realized.

This invention discloses a hydrolysis-resistant agent and its preparation method. The hydrolysis-resistant agent is prepared by mixing a RAFT reagent containing macromolecular groups with a vinyl epoxy compound, an initiator, and an organic solvent, and reacting the mixture in a protective gas environment. When used as a hydrolysis-resistant agent for modifying polybutylene terephthalate (PBT) resin, it significantly improves the migration of the hydrolysis-resistant agent within the material matrix while maintaining its hydrolysis resistance. This invention also provides a hydrolysis-resistant glass fiber reinforced PBT resin material. Using the aforementioned hydrolysis-resistant agent, the hydrolysis problem during processing can be solved, allowing for a simple and efficient production of low-cost modified PBT materials that maintain performance, with broad application prospects in the automotive, home appliance, and electronics industries.

Disclosed in the present invention is a method for purifying and recovering hydrofluoric acid waste liquid in the electronic industry, the method comprising: first rectifying hydrofluoric acid waste liquid to remove moisture, then performing membrane separation treatment on the feed liquid to remove most of metal ions in the feed liquid, then performing adsorption treatment on the feed liquid to remove a small amount of metal ions in the feed liquid, and finally performing membrane separation treatment to remove trace metal ions and particulate impurities in the feed liquid. The present invention effectively removes impurities and metal ions in hydrofluoric acid waste liquid in the electronic industry by means of a specific combination process, and the product meets the electronic grade reuse standard, thereby improving the resource recycling rate.

The utility model belongs to the field of electronic industry manufacturing technology, specifically speaking is a kind of quantitative tin paste glue dispensing mechanism, including the glue dispenser body The side of glue dispenser is fixedly connected with storage bucket, the bottom of storage bucket is equipped with passageway, the other end of glue dispenser is fixedly connected with fixed block, the inside wall of fixed block is equipped with round hole, the round hole is slidably connected with sliding rod, one end of sliding rod is fixedly connected with limit block one, the top of glue dispenser is slidably connected with push-pull rod, the middle upper portion of glue dispenser is provided with glue storage area, the bottom of glue storage area is provided with feeding port, the bottom of feeding port is provided with discharge port. Through the design of push-pull rod and sliding rod, limit block one, the solution flow path can be controlled, the solution output per unit time can be adjusted according to demand by starting push-pull rod, accurate quantitative control can ensure that the solution amount used by glue dispensing meets the actual demand, and solution waste caused by excessive glue dispensing amount is avoided.

This invention belongs to the fields of novel graphite materials in the core electronics industry and air pollution control technology in the advanced environmental protection industry. Specifically, it relates to a superhydrophilic boron-doped graphite electrode for electrolysis processes and its preparation method. The electrode includes a graphite substrate and the following functional layers sequentially constructed on the surface of the substrate: a solid-solution boron-doped layer and a surface superhydrophilic oxygen-containing functional group layer. In the solid-solution boron-doped layer, boron atoms are embedded in the graphite lattice, and the surface superhydrophilic oxygen-containing functional group layer is composed of oxygen-containing functional groups introduced by electrochemical oxidation, resulting in a hydrophilic contact angle of less than 10° on the electrode surface. The method includes steps such as mixing graphite powder with a boron source and pressing it into a green body; high-temperature solid-solution boron doping of the green body; crushing, sieving, and secondary shaping; and electrolytic treatment of the electrode for superhydrophilic modification. This invention achieves the reduction of heavy metal pollution through heavy metal anode substitution and the reduction of particulate matter pollution through bubble behavior regulation. It can reduce oxygen evolution overpotential, improve bubble desorption performance, and inhibit graphite oxidation and shedding.