114results about How to "Solve the explosion" patented technology

The invention discloses an underwater sound source positioning method based on deep learning, and the method comprises the steps: carrying out normalization operation of vector data simulated throughemploying a KRANEN program, carrying out the superposition of a 0-mean Gaussian random noise complex vector n, and obtaining the simulation sound field data p (f) at a frequency f; constructing a normalized covariance matrix H according to the analog sound field data p (f), performing Hermitian decomposition on the matrix H, and converting the complex matrix H into a real matrix capable of being processed by the convolutional neural network to obtain input data of the convolutional neural network; and training the convolutional neural network by using the input data to obtain an underwater sound source positioning prediction model, and predicting the distance and depth of the signal source according to the observed sound field data. LeNet-5 convolutional neural network and 56-layer deep residual network are used for underwater sound source positioning under single and multiple sound sources. An underwater sound source positioning algorithm with high precision and accuracy is acquired and the real-time performance of underwater sound source positioning is improved.

The invention discloses a system and a method for reducing a heating value in mobile terminal charging. The method includes the steps that A, a clock management module sends temperature detection signals every other cycle, and a central processing unit (CPU) carries out temperature detection according to the temperature detection signals; B, an obtained temperature value is compared with an over-temperature threshold value of a battery and a power management chip in a memorizer by the CPU, and if the temperature value exceeds the over-temperature threshold value, charging currents are reduced; and C, the CPU detects the temperature of the battery and the power management chip after a cycle interval through a microprocessor, and if the temperature exceeds the over-temperature threshold value, the power management chip is controlled through the microprocessor to close a charging function. According to the system and the method, the heating value of a mobile phone in the charging process can be reduced, if the heating value of the mobile phone reaches the threshold value, the current value of constant current charging is halved, and if the temperature is not reduced below a prewarning value yet, the charging function is closed. Until the temperature of the mobile phone returns to be in a normal temperature, the charging function is opened again. According to the system and the method, not only is the temperature of the mobile phone in the charging process is reduced, but also safety of the mobile phone in the charging process is further improved.

The invention relates to a mechanical interlocking socket, which comprises a shell (1), a knob switch (2) and a socket component (3). The knob switch (2) comprises a knob (23), a knob switch shaft (22) and a switch mechanism (21). The switch mechanism (21) is adjacent to the socket component (3) in the shell. An interlocking mechanism (4) is additionally arranged between the knob switch (2) and the socket component (3) and is interlocked to release limiting after the knob switch (2) is disconnected, so as to insert in or pull out a plug (5) relative to the socket mechanism (3) and to lock the plug (5) on the socket mechanism (3) after the plug (5) is inserted into the socket mechanism (3) and the knob switch (2) is turned to power on. The mechanical interlocking socket allows a user to insert in and pull out the plug under the situation that the power is cut off, and solves the problem that electric sparks are apt to be produced when the plug of a live high-current circuit is inserted in and pulled out on hot lines live, or accidents such as fire, explosion or short circuit are caused because high current is loaded instantly.

The invention discloses a manufacturing method for heavy-copper printed circuit boards. The manufacturing method includes steps of (1), providing an inner substrate; (2), pressing and fitting; (3) boring; (4) electroplating; (5), manufacturing outer circuits; (6), printing solder masks; (7), milling frames and hollow-out areas before spraying solders; (8) spraying the solders; and (9) molding. By the manufacturing method, problems such as poor quality and waste of time, manpower and material resources due to high temperature during solder spraying are solved, and board delamination during solder spraying in manufacturing of the heavy-copper printed circuit boards is overcome. In addition, by the manufacturing method which is simple and feasible, the yield of the solder spraying (especially lead-free solder spraying) process for heavy-copper boards can be improved greatly and production cost can be reduced further.

The invention discloses a method for preparing a lithium battery current collector by plasma spraying polymer composite PTC powder. The method comprises the steps of (1) preparing the polymer composite PTC powder; (2) heating the lithium battery current collector up to 100-300 DEG C by a heating device, and coating the lithium battery current collector with the polymer composite PTC powder obtained in the step (1) through a plasma spraying device to form a polymer composite PTC powder coating on the lithium battery current collector; (3) baking the lithium battery current collector coated with the polymer composite PTC powder coated in the step (2), and carrying out a recrystallization technology to obtain the lithium battery current collector provided with the polymer composite PTC powder coating. Compared with the prior art, the method has the advantages that the processing process is simple and convenient, the production efficiency is improved, the yield is increased, the product thickness consistency is high, the product quality reliability is high, the thermosensitive reaction speed is high, and capacity adjustment is accurate and convenient.

The invention discloses a semantic similarity feature extraction method based on double selection gates, and relates to the field of natural language processing. The technical scheme is as follows: firstly, peforming word segmentation and vectorization representation on an input sentence pair to obtain a word vector; inputting the obtained word vector sequence into a bidirectional long-short-termmemory network; obtaining contextual information vectors of the two sentences; secondly, obtaining core feature vectors of sentence pairs through double selection gates respectively; obtaining vectorsof a sentence pair, then inputting the vectors into a multi-angle semantic feature matching network to obtain feature matching vectors of the sentence pair, finally, combining the two semantic feature matching vectors of the matching vectors through a bidirectional long-short-term memory network aggregation layer, and predicting the similarity of the sentence pair. The method effectively alleviates the problem of low matching efficiency caused by information redundancy, and avoids the cost problem of manual core information extraction.

The invention provides a gas automatic ignition control method which comprises the following steps: judging whether a gas equipment start-up signal is received or not; when judging that the gas equipment start-up signal is received, generating a first control signal, and controlling an ignitor in gas equipment to light a fire based on the first control signal; generating a second control signal, and opening a gas valve in the gas equipment based on the second control signal; judging whether the ignitor starts burning successfully or not; when judging that the ignitor does not light a fire successfully, generating a third control signal, and controlling the gas valve to be closed for a first preset time T1 based on the third control signal; and judging whether the closing time of the gas valve reaches the first preset time T1 or not, and repeating the above fire-lighting steps till a fire is lighted successfully when the closing time of the gas valve reaches the first preset time T1. According to the gas automatic ignition control method, the gas valve is closed for a certain time after the ignitor fails to light a fire. Therefore, gas which is not fully burned can escape, and the problem that an explosion is possibly caused by an increase in the gas concentration can be solved.

The invention relates to the technical field of circuit board production and manufacturing, in particular to a method for manufacturing a resin plug hole in a PCB. According to the invention, silk screen printing of resin ink is performed on the bottom surface and the front side of a production board twice; the resin ink with viscosity of 450-640 dpa.s is screen-printed at a speed of 15-20 mm/s and 30-35 mm/s under a vacuum degree of 40-80 Pa; the fullness of the resin ink in the front hole at the time of the silk screen printing of the first time is controlled of be 60%-70%; and three-stage plate baking treatment is carried out according to the temperature and the time, so that the problem of occurring of bubbles in the resin plug hole can be avoided, and the problem that the plug hole isnot full can be effectively reduced, thereby solving the problems that the resin plug holes of the existing resin plug hole plate are uneven in copper plating or cannot be plated with copper, and plate explosion occurs when a production plate passes through a tin furnace. The silk-screen effect can be further guaranteed by simultaneously controlling the parameters such as the scraper thickness, the scraper angle and the scraper speed, the fullness of the resin ink in the front hole is better controlled, and tiny bubbles contained in the resin ink in the front hole are reduced.

The invention discloses a multilayer anisotropic puncture type conductive fabric adhesive and an FPC reinforcing shielding structure using the same, wherein the conductive fabric adhesive comprises anupper conductive adhesive layer, a lower conductive adhesive layer and an ultra-thin conductive fabric layer formed between the upper conductive adhesive layer and the lower conductive adhesive layer; the thickness of the upper conductive adhesive layer is 15-25[mu]m, and the thickness of the lower conductive adhesive layer is 35-45[mu]m; the upper and lower conductive adhesive layers comprise metal conductive particles, wherein the metal conductive particles are at least two kinds of a tree branch shape, a chain shape, a needle shape, a slice shape and a sphere shape, and particle sizes of the metal conductive particles are 40-100[mu]m; and the thickness of the ultra-thin conductive fabric layer is 5-15[mu]m. According to the adhesive, the characteristics of an extremely good grounding effect and an electromagnetic shielding effect, high electrical property, excellent bonding strength, excellent tin soldering property, excellent reliability, excellent flame resistance and the like can be achieved by combining with a reinforcing material and an EMI film under the condition that the FPC does not have a reserved grounding hole, and in addition, the production process can be reduced,and the production cost can be lowered.

The invention relates to a controllable gap, and a device and method for protecting a neutral point of a 110KV transformer based on the controllable gap, and belongs to the technical field of the high voltage, solves such problems as anti-operation under the steady-state over-voltage and error operation under the transient-state over-voltage caused by the poor action stability in existing discharging gap, and solves the problem that a lightning arrester and the discharging gap in the existing protection method and protection device for the neutral point of the 110KV transformer are not clearly divided because the lightning arrester is just simply in parallel connection with the discharging gap. The method comprises the steps of: identifying the type of an over-voltage through a voltage-type identification and energy storage unit, transmitting a steady-state over-voltage to a triggering pulse forming unit through the voltage-type identification and energy storage unit when the over-voltage is a steady-state over-voltage, forming a triggering pulse signal through the triggering pulse forming unit, transmitting the triggering pulse signal to a controlled discharging gap, and enabling the controlled discharging gap to act; and enabling a zinc oxide lightning arrester (MOA) to act if the over-voltage is a transient over-voltage. The method and the device are mainly used for protecting a neutral point of the 110KV transformer.

The invention relates to a big data tensor canonical decomposition calculation method based on a Shenwei multi-core processor. The big data tensor canonical decomposition calculation method comprisesthe following steps: 1) proposing a big data calculation method swMR according to characteristics of the Shenwei multi-core processor; 2) dividing computing processing unit cluster CPE organized in a8 * 8 grid form by the swMR in the Shenwei multi-core processor into 32 CPE pairs, grouping two adjacent CPEs in each row in the grid, processing a mapping Map task by one CPE, and processing a reduction Reduce task by the other CPE; 3) according to the workload condition of each CPE pair, mapping reduction Map/Reduce processing role dynamic conversion is carried out in the CPE pair to realize dynamic adjustment of the workload; and 4) based on swMR and an Shenwei multi-core processor, providing a reasonable calculation method swTensor for tensor canonical decomposition calculation. Implementation of a machine learning algorithm and tensor canonical decomposition calculation on an Shenwei processor is supported; dynamically dividing workloads to balance job distribution conditions in the CPE pair. Based on a mapping reduction MapReduce programming model, the swTensor efficiently supports tensor canonical decomposition calculation.

The invention discloses a circuit board buried hole resin hole plugging method. The method comprises the following steps of: providing an electroboardd multilayer board to be subjected to hole plugging, manufacturing an inner layer circuit on the multilayer board, carrying out browning treatment on the multilayer board, performing resin hole plugging on the buried holes in the multilayer board byadopting a screen printer and a screen printing board, conducting leveling treatment on the resin protruding out of the buried hole through a leveling machine, baking the multilayer board by adoptingheating equipment, and laminating the outer layer of the multilayer board. According to the circuit board buried hole resin hole plugging method provided by the invention, through the process technology of resin hole plugging after browning, the trouble of thin board resin board grinding in the prior art is solved, the expansion and shrinkage problems caused by thin board resin hole plugging boardgrinding are avoided, on the other hand, the board explosion problem caused by thin PP pressing glue filling shortage is solved, and good reliability of products is guaranteed.

The invention discloses a method for preparing lithium battery current collector by electrostatic coating polymer composite PTC powder. The method comprises the steps of (1) preparing the polymer composite PTC powder; (2) heating the lithium battery current collector up to 100-300 DEG C by a heating device, and coating the lithium battery current collector with the polymer composite PTC powder obtained in the step (1) through an electrostatic coating device to form a polymer composite PTC powder coating on the lithium battery current collector; (3) baking the lithium battery current collector coated with the polymer composite PTC powder coating in the step (2), and carrying out a recrystallization technology to obtain the lithium battery current collector provided with the polymer composite PTC powder coating. After the method is adopted, the problems of damage and explosion caused by heating of a lithium battery can be solved, so that the problems of combustion and explosion caused by rapid heating and chain reaction since the current of the current collector is overhigh due to overheating of the interior of the lithium battery can be further solved.

The invention relates to a firecracker semi-finished product storage device with safe self-destruction and automatic fire extinction device, which can solve the problems of present semi-finished safe self-destruction device which can not extinct around fire. It comprises a bracket, a cage storage box, and a safe self-destruction device. Wherein, the safe self-destruction device comprises a top cover, a high-pressure water chamber case and a safe self-destruction element. The safe self-destruction element comprises a fodder chamber, a quick-fire wire leaded from the fodder and the fire-proof sheath, and a water conductor; the high-pressure water chamber case is a dual-chamber structure which comprises a central chamber whose bottom has a self-destruction element and an annular chamber. The invention has significant fire-extinction self-destruction effect, while the self-destruction device has been tested for thousands times in 13 years and the self-destruction fire extinction effect can reach 100%.

The invention relates to an oxygen-free surface water drying system and a surface water drying technology for material, wherein the oxygen-free surface water drying system comprises a drying device and a heating system; the drying device comprises a vertical drying cylinder and a coal inlet, a coal outlet, an air inlet pipe and an air outlet pipe which are arranged at the upper end and the lower end of the vertical drying cylinder; the outer sides of two side walls of the drying cylinder are respectively provided with a hot-gas cavity; a certain number of rack pipes or rack plates are communicated between the two hot-gas cavities to lead the coal in the drying cylinder to be completely separated from the hot gas in the hot-gas cavities and the rack pipes or the rack plates; the orifices of the air inlet pipe and the air outlet pipe are respectively provided with a thermograph T1 and a thermograph T2, a discharge hole is provided with a thermograph T0, a steam tube is arranged in the drying cylinder and led out of a drying device, drying is conducted at normal atmosphere, and the temperature of T1, T2 and T0 is controlled to remove the surface water of the material. The invention completely solves the problem of firing and explosion caused by combustible gas precipitation, is not only applicable to oxygen-free surface water drying of coal, but also applicable to the drying of chemical products, industrial and municipal sludge, metallic and nonmetallic minerals, coal slime and the like.

The invention relates to a CIGS absorbing layer of a solar cell, in particular to a method for preparing CIGS powder through a dry method. The method comprises the steps that copper and indium alloy powder, copper and gallium alloy powder and selenium powder are uniformly mixed to obtain a mixture of copper, indium, gallium and selenium; the mixture is arranged in a die and pressurized to form a blank body; the blank body is arranged in a reaction kettle, and high pressure protection gas is guided into the reaction kettle; the blank body is lighted and reacts to generate a sintering body; after being cooled to the indoor temperature, the sintering body is smashed to obtain the CIGS powder. According to the method, the copper and indium alloy powder and the copper and gallium alloy powder are prepared and then mixed with the selenium powder so that the problems that direct mixing of selenium and gallium or indium is difficult and poison or explosion may be caused in the mixing process can be solved, and the safety of the preparation process is improved. Other external heat sources are not needed in the process of lighting the blank body, and therefore the energy consumption is low, equipment is simple, and the cost is low. In the reaction and synthesis processes, due to the fact that the reaction temperature is high, volatile matter can be evaporated, and the purity of products is high.

The can (10; 10A; 10B; 10C) for the extemporaneous preparation of beverages by extraction and/or infusion comprises a first chamber (12) intended to collect the final beverage, a second chamber (14) containing a drinkable liquid and a filtering device (16) containing a substance able to produce the required beverage by extraction and/or infusion. The can is foreseen to be put onto a heating source after opening the can lid (18; 18A, 18B; 18C) and operating the filtering device (16) by the user. The lid (18; 18A, 18B; 18C) comprises: an outer rim portion (22; 22B) intended to remain fixed to the can lateral wall (20) when opening the can; an inner removable portion (24; 24A; 24B; 24C) intended to be ripped in order to open the can; and a predetermined breaking line (34) separating said inner removable portion (24; 24A; 24B; 24C) from said outer rim portion (22; 22B). The breaking line (34) is provided in an annular portion (28; 28A; 28B; 28C) forming part of the lid (18; 18A, 18B; 18C)and made of plastic material. The outer part (32; 32B) of the annular portion (28; 28A; 28B; 28C) is part of the outer rim portion (22; 22B) while the inner part thereof (24; 24A; 24B; 24C) is part of the inner removable portion (24; 24A; 24B; 24C).

The invention discloses a portable disinfectant preparing and spraying all-in-one machine. The machine comprises a shell assembly, a spraying assembly and a power supply assembly, the shell assembly comprises a bottom shell, a top shell and an electrode slice, a liquid containing cavity is formed in the bottom shell, the top shell is connected to the bottom shell, the electrode slice is arranged between the bottom shell and the top shell, and the electrode slice is located in the liquid containing cavity; the spraying assembly comprises a nozzle, a water pump and a pipeline, the nozzle is arranged on the outer side wall of the top shell, the water pump is arranged in the top shell, one end of the pipeline is arranged in the liquid containing cavity, and the other end of the pipeline is connected to the nozzle through the water pump; and the power supply assembly is electrically connected to the electrode slice and the water pump separately, and the power supply assembly is used for supplying power to the electrode slice and the water pump separately. According to the portable disinfectant preparing and spraying all-in-one machine, the shell assembly, the spraying assembly and the power supply assembly are arranged, so that the power supply assembly is integrated on the shell assembly, electrolytic reaction can be carried out without external mains supply, and actual use and operation are more convenient.

The invention discloses a target pose estimation method and system based on an attention mechanism and Hough voting. The method comprises the following steps: acquiring a color image and a depth image; segmenting and cutting the color image to obtain color and depth image blocks of each target object; using two strategies to estimate the six-dimensional pose of a target object, for a three-dimensional rotation matrix, based on a feature extraction network of bidirectional space attention, performing robust feature extraction by utilizing target surface two-dimensional feature constraint, and then using a multi-layer sensing network to regress the three-dimensional rotation matrix of the target; and for a three-dimensional translation vector, reconstructing a target object point cloud and normalizing point cloud data, estimating a point cloud three-dimensional translation direction vector point by point by adopting a Hough voting network, finally establishing a translation center straight line set, and solving a space nearest point to obtain a target three-dimensional translation vector. According to the method, the rotation matrix and the translation vector are estimated respectively, the execution speed is high, and precision is high.

The invention discloses a cooperative coding caching method based on a dynamic request D2D network. The cooperative coding caching method comprises the following steps: 1, establishing a network architecture; 2, establishing a user content sharing model in the D2D network; 3, processing the content in the network through a maximum distance separable (MDS) code ; 4, obtaining a content packet by a user ; 5, calculating the content transmission delay of the transmission process from the base station to the user in the D2D transmission process; 6, analyzing the dynamic request of the user; 7, establishing a coding cache problem in the D2D network as a Markov decision process (MDP); 8, calculating the average value of the cache rewards; 9, establishing an optimization problem by taking an average value of maximizing the total time cache rewards as an optimization target; and 10, proposing a cooperative coding cache algorithm based on Q-learning to carry out solution. According to the method, the cache redundancy is reduced, and the traffic load pressure of the base station is relieved.