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43results about How to "Meet the restrictions" patented technology

Thyristor core manufacturing process

InactiveCN101752248AImprove welding characteristicsImproved high temperature characteristicsSemiconductor/solid-state device manufacturingEvaporationAlloy
The invention discloses a thyristor core manufacturing process. The manufacturing process is characterized in that the manufacturing process includes the following steps: 1) boron diffusion; 2) oxidization; 3) primary photoetching; 4) phosphorus diffusion; 5) sintering; 6) evaporation; 7) alloying; 8) secondary photoetching; 9) surface treatment-nickeling; 10) surface treatment-silvering; 11) tertiary photoetching; 12) angle grinding; 13) surface corrosion. Primary diffusion-oxidization-photoetching-secondary diffusion are carried out on an original N-type silicon slice so as to form a four-layer (P-N-P-N) structure; sintering and bonding are carried out under the vacuum condition and high temperature; high-purity aluminum is gasified on the surface of a mono-crystalline silicon slice by an electron beam under high temperature so as to form an effective protective film; finally, nickeling and silvering treatments are respectively carried out on a surface layer of a sintered and film-coated thyristor core, and an anode and a cathode which can be welded are led out at the two ends of the thyristor core, so as to prepare the entire thyristor core suitable for both welding encapsulation and pressure-welding encapsulation at the same time as removing a traditional lead evading technology.
Owner:ZHEJIANG SIFANG ELECTRONICS

Wireless charging method and the terminal

The invention relates to a wireless charging method and a terminal, wherein the wireless charging method comprises the following steps: the terminal obtains the voltage threshold supported by a power management chip and a plurality of output voltages supported by a wireless charger as well as corresponding output current upper limit values; the terminal determines a voltage conversion coefficient according to the plurality of output voltages and the voltage threshold value, and sends a power charging request to the wireless charger, wherein the power charging request comprises a requested voltage and a requested current. The requested voltage is the maximum output voltage which is no greater than the product of the voltage threshold value and the reciprocal of the voltage conversion coefficient, and the requested current is no greater than the upper limit value of the output current corresponding to the requested voltage; and the terminal generates a power charging signal under the excitation of a wireless signal outputted by the wireless charger, and according to the voltage conversion coefficient and the current conversion coefficient, carries out voltage and current conversion on the power charging signal to obtain an input signal of the power management chip, wherein the current conversion coefficient is the reciprocal of the voltage conversion coefficient. According to the schemes proposed by the invention, the charging efficiency can be effectively improved, and the charging time can be shortened.
Owner:BEIJING XIAOMI MOBILE SOFTWARE CO LTD

Method for controlling networked teleoperation system in consideration of limited system performance

The invention discloses a method for controlling a networked teleoperation system in consideration of limited system performance. The specific method is as follow: under network communication delay, alimited master-slave position synchronization error variable is defined on the basis of a non-linear networked teleoperation system model; on the basis of the defined error variable and a neural network, a self-adaptive neural network control policy for the teleoperation system is designed; and a Lyapunov equation is utilized for giving a self-adaptive neural network and parameter adjustment rule, ensuring that set performance requirement is met while the master-slave synchronization error tends to be converged at zero. By stably operating under the limited performance of the teleoperation system, the method disclosed by the invention ensures the safety of the system, solves the problems of low system convergence speed and low precision under a conventional teleoperation control policy, overcomes the uncertainty of a system model and the influence of outside interference on system performance, and enhances the transient and stable performance and anti-interference performance of the system. Moreover, the method simplifies the process of designing a controller, so that practical application is more benefited.
Owner:YANSHAN UNIV

Tire type metro replaced laying machine and span changing method thereof

The invention discloses a tire type metro replaced laying machine and a span changing method thereof. The tire type metro replaced laying machine comprises a portal structure, a lifting structure, a span changing structure, an electrical system, a hydraulic system and a walking device. The walking device comprises a supporting frame. Walking mechanisms are arranged on the two sides of the supporting frame, and each walking mechanism comprises a walking frame and a walking wheel set. Wheel faces of each walking wheel set comprise a cylindrical wheel face and a conical wheel face connected withthe cylindrical wheel face, wherein the outer diameters of the conical wheel face are large inside and small outside. The span changing mechanism is further arranged and used for realizing span changing. According to the tire type metro replaced laying machine, the temporary track laying process of metro track laying is reduced through the walking device, the cost input is reduced, the construction period is ensured, the walking device rotates by 0-45 degrees in the circuit direction to adapt to walking on different-radius pipe walls, and the limiting requirements for special conditions of small curves, station platforms and civil air defense doors can be met.
Owner:CHINA RAILWAY HEAVY MACHINERY

Soil sterilization method for preventing and treating vegetable continuous cropping diseases through chlorine dioxide and calcium oxide

InactiveCN105770942AHigh chlorine dioxide contentEasy to useBiocideDead animal preservationContinuous croppingDisease
The invention discloses a soil sterilization method for preventing and treating vegetable continuous cropping diseases through chlorine dioxide and calcium oxide. The method comprises the following steps that 1, within the fallow period of a greenhouse, soil is leveled; land irrigation water is irrigated to the soil, a chlorine dioxide disinfectant with the concentration being 10 g / l is put, the concentration of the chlorine dioxide disinfectant in the water entering the soil is 80-100 mg / l, and the depth of a permeable layer reaches 25-30 cm; 2, after irrigation is completed, the soil is naturally dried in the air for 3-5 days, and after the soil is in the half-wet and half-dry condition, calcium oxide powder is spread over the soil surface uniformly according to the amount of 20-30 kg per mu; in one day after rotary tillage, ridges are regulated, fertilizer is applied, and planting is carried out. The method is simple in step, low in cost and environmentally friendly. The effect of preventing and treating the continuous cropping diseases is remarkable, residual pollution is avoided, it can be better ensured that the soil acidity and alkalinity after sterilization reaches the pH value suitable for growth of vegetables, growth of crops is promoted, and the yield is increased remarkably.
Owner:SHENZHEN OUTAIHUA ENG EQUIP

Preparation method of biological polypeptide for phenylketonuria medicinal food, and use thereof

The present invention discloses a preparation method of a biological polypeptide for phenylketonuria medicinal food, and a use thereof, belongs to the field of biomedicines, and solves a problem thatseparation and purification of phenylalanine-free biological polypeptide are difficult. The preparation method comprises the following steps: one of whey powder, milk powder or fresh milk is selectedto be used as a preparation raw material; trypsin, pepsin and chymosin are selected to be combined as biological enzymes for preparing the biological polypeptide; the biological enzymes are added in the preparation raw material for enzymatic hydrolysis; and separation and purification of the target biological polypeptide are conducted, and a mass fraction of phenylalanine in the purified biological polypeptide is 0-0.15%. The amount of the phenylalanine in the biological polypeptide is controlled to be within 0.15%, avoiding a problem of difficulty in separation and purification caused by pursuing product purity and reducing industrial production costs; and the prepared biological polypeptide solves limitation requirements of patients with phenylketonuria for the phenylalanine and also ensures nutritional needs of the patients for amino acids and proteins.
Owner:兰州天禾生物催化技术有限公司

A tire-type subway paving changer and its span-changing method

The invention discloses a tire type metro replaced laying machine and a span changing method thereof. The tire type metro replaced laying machine comprises a portal structure, a lifting structure, a span changing structure, an electrical system, a hydraulic system and a walking device. The walking device comprises a supporting frame. Walking mechanisms are arranged on the two sides of the supporting frame, and each walking mechanism comprises a walking frame and a walking wheel set. Wheel faces of each walking wheel set comprise a cylindrical wheel face and a conical wheel face connected withthe cylindrical wheel face, wherein the outer diameters of the conical wheel face are large inside and small outside. The span changing mechanism is further arranged and used for realizing span changing. According to the tire type metro replaced laying machine, the temporary track laying process of metro track laying is reduced through the walking device, the cost input is reduced, the construction period is ensured, the walking device rotates by 0-45 degrees in the circuit direction to adapt to walking on different-radius pipe walls, and the limiting requirements for special conditions of small curves, station platforms and civil air defense doors can be met.
Owner:CHINA RAILWAY HEAVY MACHINERY

Frame structure system used in high-intensity area

The invention provides a frame structure system suitable for a high-intensity area. The frame structure system is a multi-layer building composed of columns, beams and plates. In the frame structure system, the parts where the interlayer displacement angle is maximum due to intensive stress are provided with shock-absorption and energy-dissipation components respectively, and the shock-absorptionand energy-dissipation components include viscous damping walls and buckling-restrained braces, wherein the buckling-restrained braces are arranged at the positions where the interlayer displacement angles are maximum or relatively large due to intensive stress on the first to third floors of the multi-layer building or in the walls nearby the positions, and the viscous damping walls are arrangedat the positions where the interlayer displacement angles are maximum or relatively large due to intensive stress on the third or higher floors of the multi-layer building or in the walls nearby the positions. According to the frame structure system, while a good shock-absorption and energy-dissipation effect is achieved in a large earthquake, a moderate earthquake and a small earthquake, the aimscan be achieved that the sizes of reinforced concrete frame beam columns in the frame structure system are obviously reduced, the total construction cost of building materials is low, and the earthquake-proof cost-performance ratio is high.
Owner:ARCHITECTURAL DESIGN RES INST OF GUANGDONG PROVINCE

Wireless charging method and terminal

The present disclosure relates to a wireless charging method and a terminal. The method includes: the terminal obtains a voltage threshold supported by a power management chip, multiple output voltages supported by a wireless charger and their corresponding upper limit values ​​of output current; and the voltage threshold to determine the voltage conversion coefficient, and send a charging request to the wireless charger, wherein the charging request includes a requested voltage and a requested current, and the requested voltage is the maximum output voltage not greater than the product of the voltage threshold and the reciprocal of the voltage conversion coefficient, and the requested current is not It is greater than the upper limit of the output current corresponding to the requested voltage; the terminal generates a charging signal under the excitation of the wireless signal output by the wireless charger, and performs voltage and current conversion on the charging signal according to the voltage conversion coefficient and current conversion coefficient to obtain the input of the power management chip signal, where the current conversion factor is the reciprocal of the voltage conversion factor. The solution provided by the present disclosure can effectively improve charging efficiency and reduce charging time.
Owner:BEIJING XIAOMI MOBILE SOFTWARE CO LTD

A Constant Stable Offshore Nuclear Power Platform

The invention relates to a constant-stable offshore nuclear power platform. A fixed ballast tank is arranged at the bottom of the nuclear power platform. After the nuclear power platform is in place, solid ballast is poured into the fixed ballast tank so that the center of gravity of the nuclear power platform is located below the buoyancy center. The upper part of the fixed ballast tank is connected to the bottom of the buoyant tank through trusses and braces, and the upper periphery of the buoyant tank is connected to the bottom of the deck through several columns, which are used as the main support structure and stability maintenance structure of the nuclear power platform; the middle of the top of the buoyant tank is connected to the bottom of the deck There is a cylindrical nuclear island cabin between the decks, the upper end of the nuclear island cabin runs through the deck, and the nuclear island cabin hatch cover and anti-collision protection structure are set on the deck; the nuclear island cabin contains small nuclear reactor containment and internal circuit facilities After the nuclear power platform is in place, the sea level is higher than the immersion height of the nuclear reactor containment. The invention has constant stability, good safety, simple structure and low engineering cost, and can provide stable, reliable and clean energy for the development of offshore oil and gas fields, sea islands and shore users.
Owner:CHINA NAT OFFSHORE OIL CORP +1
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