19results about How to "Improve launch performance" patented technology

The invention provides a preparation method of a beryllium-copper alloy material with high beryllium content, which comprises the following steps of: preparing metal raw materials containing pure copper and beryllium-copper master alloy, smelting to obtain alloy liquid, casting the alloy liquid to obtain a cast ingot, homogenizing the cast ingot to obtain a homogenized casting blank, and hot-rolling the homogenized casting blank to obtain a hot-rolled blank, the preparation method comprises the following steps: carrying out hot rolling on an alloy strip, carrying out hot rolling on the alloy strip to obtain a hot-rolled blank, carrying out annealing treatment on the hot-rolled blank to obtain an annealed blank, carrying out a circulating cold rolling-intermediate annealing process on the annealed blank, and finally carrying out finish rolling and finished product annealing treatment on the alloy strip to prepare the high-beryllium-content beryllium-copper alloy material. And machining passes are many.

The invention discloses a micro electro mechanical system (MEMS) ultrasonic transducer, which comprises a transmitting unit, a receiving unit, a transmitting unit and a receiving unit, the decoupling space is positioned between the transmitting unit and the receiving unit; wherein the surface, opposite to the receiving unit, of the transmitting unit is a curved surface. According to the invention, the surface, opposite to the receiving unit, of the transmitting unit is set to be the curved surface, so that the transmitting performance is improved on the premise that the receiving performance is not reduced.

The present application belongs to the technical field of electromagnetic detection, and relates to a composite impedance matching network of a controllable source electromagnetic exploration system and a design method. The composite impedance matching network comprises a topology structure of a CIMN composed of a fixed capacitor CF and an ICLC part in series, and is integrated in a transmitting system of the controllable source electromagnetic exploration system. The CIMN adopts a new combined matching method and related optimization design, improves the wideband current transmission performance in terms of compensation range and power loss, proposes a new combined matching topology structure, and illustrates the corresponding wideband matching function through mathematical derivation and analysis. In combination with the wideband transmission requirement of the controllable source electromagnetic method and the limited power supply condition, a parameter optimization scheme and a control strategy of the composite impedance matching network are designed. The CIMN can better adapt to the wide working frequency range of the CSEM transmitter, improve the matching bandwidth, and reduce the power loss.

The invention relates to the technical field of rocket launching platform design and application, in particular to a modular application method of a reconfigurable rocket launching platform, and solves the technical problem that existing launching work generally needs to carry out new launching platform design and demonstration according to rocket requirements. According to the method, a main control unit, a supporting unit, a filling unit and a testing unit framework of a launching platform are formed according to different rocket launching requirements; a plurality of units with different functions are stored in the launching site according to the number of stations, the requirements of rocket launching on a launching platform can be received, and the units with the functions are dispatched according to the actual requirements of a rocket under the dispatching of the main control unit; the unit for supporting the final assembly goes to a final assembly workshop to support rocket final assembly work; under the condition that part of the units do not need to participate in final assembly work, the parts of the units can directly go to a transmitting station for standby preparation; after the rocket is subjected to final assembly, the rocket is transported to a launching station through the units participating in final assembly work in a cooperative mode, and after launching is completed, all the units are withdrawn.

This application relates to the field of antenna technology, disclosing an antenna and a communication device. The antenna includes a main board, a radiating structure, a parasitic structure, and a feeding structure. The radiating structure is disposed on the main board and includes high-frequency stubs and low-frequency stubs. The parasitic structure is disposed on the main board and includes high-frequency parasitic stubs and low-frequency parasitic stubs. The high-frequency parasitic stubs are electromagnetically coupled to each other, and the low-frequency parasitic stubs are also electromagnetically coupled to each other. The feeding structure is connected to both the high-frequency and low-frequency stubs, providing electrical signals to them. Through this method, this application enables a single antenna to support communication needs from 2G to 5G and multiple Wi-Fi frequency bands.

The application provides a preparation method of a high-beryllium-content beryllium copper alloy material, which comprises the following steps: melting metal raw materials containing pure copper and a beryllium copper master alloy to obtain an alloy liquid, casting the alloy liquid to obtain an ingot, uniformly treating the ingot to obtain a homogenized casting blank, hot-rolling the homogenized casting blank to obtain a hot-rolled blank, annealing the hot-rolled blank to obtain an annealed blank, performing a cyclic "cold rolling-intermediate annealing" process on the annealed blank, and finally performing finish rolling and product annealing on the alloy strip to prepare the high-beryllium-content beryllium copper alloy material. The method can solve the problems of the second phase component of the high-beryllium-content strip being inconsistent, the strip being cracked, side-bent and wrinkled, and a large number of processing passes in the prior art.

The invention relates to a flame-retardant radiation refrigeration film with excellent durability and a preparation method thereof, the radiation refrigeration film is a layered film with a micro-nano porous structure formed by mutual crosslinking of flame-retardant and weather-resistant resin fibers, and inorganic micro-nano particles are uniformly coated in the flame-retardant and weather-resistant resin fibers. The flame-retardant radiation refrigeration film with excellent durability provided by the invention has excellent radiation refrigeration performance and thermal stability, on one hand, strong molecular vibration in a 8-13-micron wave band region can be provided, the emission capability of an atmospheric window wave band is enhanced, and on the other hand, the inorganic micro-nano particles have efficient sunlight scattering capability, so that the radiation refrigeration film has excellent radiation refrigeration performance and thermal stability. And the emissivity of an atmospheric window wave band can be improved, and the refrigeration performance of the fiber membrane is further enhanced. On the other hand, high stability, including flame retardance, ultraviolet resistance and chemical corrosion resistance, of the fiber skeleton is provided, and the fiber skeleton can be used for a long time in a severe environment and has a good market application prospect.

The invention aims to provide an efficient heat dissipation router for network communication, and relates to the technical field of communication equipment, the efficient heat dissipation router comprises a base assembly, the base assembly comprises a balancing weight and an anti-skid pad, and the balancing weight is used for keeping the router stable; the shell assembly comprises a shell, a cover plate, a dustproof plate, a mounting rod, a connecting rod, a sleeve rod and a first antenna assembly and is used for air flow entering and signal transmitting. The mainboard assembly comprises a circuit board and a supporting spring, damping protection is carried out through the supporting spring and the second antenna assembly, and the problem that a traditional router is poor in heat dissipation effect is solved.

The application relates to the technical field of semiconductor photoelectric devices and thin film manufacturing, and particularly discloses a preparation method of a light detector based on a sputtering hybrid semiconductor thin film. The prepared light detector comprises, from bottom to top, a transparent conductive substrate, a bottom charge transport layer, a hybrid semiconductor light absorption layer, a top charge transport layer and a metal electrode. The hybrid semiconductor light absorption layer is prepared by using a magnetron sputtering process based on target self-heating. The thermal electron emission effect of the target self-heating is used to excite high-density plasma at a low working voltage, to rapidly and lowly damage the target for sputtering, and to form a dense and pure-phase hybrid semiconductor thin film. The application uses a multi-dimensional method of adjusting the cathode surface magnetic flux, adjusting the working voltage and target self-heating to improve the plasma density in the chamber. While realizing high-speed deposition of 30-500 nm / min, the hybrid semiconductor thin film defect density is reduced and the photoelectric performance of the light absorption layer is improved.

The present invention relates to a visible-near-infrared frequency-dividing radiation cooling film based on a bionic rose petal micro-nano structure and a preparation method and application thereof, belonging to the field of radiation cooling technology. In order to solve the problem that existing radiation cooling materials cannot take into account both lighting and cooling performance, the present invention provides a visible-near-infrared frequency-dividing radiation cooling film based on a bionic rose petal micro-nano structure, comprising a transparent bionic micro-nano structure layer and a multilayer film structure layer of a bionic rose petal structure arranged from top to bottom, the surface of the transparent bionic micro-nano structure layer is distributed with a first cone micro-nano structure in an array; the surface of the first cone micro-nano structure is distributed with a second cone micro-nano structure in an array. The present invention realizes the selective transmission of solar radiation energy by the radiation cooling film, realizes the visible-near-infrared band frequency-dividing function and the high emission performance of the atmospheric window, can take into account both lighting and cooling performance, thereby broadening the scope of application of the radiation cooling material.

The utility model relates to the technical field of toy guns, in particular to a counter weight speed-reducing emission gun which is provided with a gun body, a gear clamping piece, a gear and a speed-reducing counter weight mechanism are respectively arranged on the gun body, the gear is rotatably connected with the gun body, the gear clamping piece is arranged on the gun body on one side of the gear, a clamping part and a releasing part are respectively arranged on the gear clamping piece, and the speed-reducing counter weight mechanism is arranged on the gun body. The gear clamping piece is connected with the gun body through a reset spring, the speed reduction balance weight mechanism is installed on the gun body on the other side of the gear and comprises a balance weight block, a gear supporting block and a pull rod, the gear supporting block is rotationally connected with the gun body, and the gear supporting block is rotationally connected with the gear clamping piece. The gear supporting block is provided with a tooth supporting part and a pulling part, the tooth supporting part extends to the space between teeth of the gear, the pulling part is connected with the balancing weight through a pull rod, the balancing weight is connected with the gun body in a limiting and swinging mode, and the gun has the advantages of being simple in structure, capable of reducing speed during continuous shooting, good in shooting sense, good in shooting effect and the like.

The invention discloses an infrared emission chip structure and a preparation method thereof.The infrared emission chip structure comprises a semiconductor board, a keyboard matrix module, a code modulation module, a first infrared LED emission module, an intensity control assembly, a heat dissipation assembly and a heating assembly, and the intensity control assembly is arranged at the top of the semiconductor board; the heat dissipation assembly and the heating assembly are arranged at the top of the semiconductor plate; the intensity control assembly comprises an infrared intensity control module arranged at the top of the semiconductor plate, one side of the semiconductor plate is provided with an illumination sensing module, one side of the semiconductor plate is provided with a distance sensing module, and one side of the semiconductor plate is provided with a second infrared LED emission module. According to the invention, the intensity of the infrared light signal can be adjusted by the infrared emission chip structure according to the actual situation through the arranged intensity control assembly, so that the situation that the infrared emission chip structure wastes electric power is prevented, and the emission effect of the infrared emission chip structure on the infrared light signal is improved.

The invention relates to an antenna control method, an antenna control device, electronic equipment and a storage medium. The antenna control method comprises the following steps: determining a target antenna arranged on equipment; determining a target working parameter of the target antenna according to the transmit-receive performance influence parameter of the target antenna; and controlling the target antenna according to the target working parameter so as to improve the transceiving performance of the equipment. Thus, the transmitting performance and the receiving performance of the target antenna can be improved simultaneously, the transmitting and receiving performance of the device is improved, normal communication of the device is ensured, and the user experience is improved.

The invention relates to a 4G terminal connecting plate, and belongs to the technical field of communication, and the 4G terminal connecting plate comprises a plate body; the 4G module is integrated on the board body; the power supply module is integrated on the board body, is in communication connection with the 4G module and is used for supplying power to the 4G module; the startup module is integrated on the board body, is in communication connection with the 4G module and is used for starting up the 4G module; the SIM card module is integrated on the board body, is in communication connection with the 4G module and is used for sending and receiving data; and the serial port communication module is integrated on the board body, is in communication connection with the 4G module, and can communicate with an external single-chip microcomputer. The 4G module is adopted to replace Bluetooth transmission, so that the data transmission distance is increased, and the real-time performance, accuracy, safety and universality of data transmission are improved.

The application relates to a preparation method of a dual-ligand protected electrochemiluminescence gold nanocluster and application of the electrochemiluminescence gold nanocluster in detection of hOGG1. The electrochemiluminescence gold nanocluster is synthesized in a one-step method with methionine and beta-cyclodextrin as dual ligands. The obtained water-soluble electrochemiluminescence gold nanocluster has good biocompatibility, high electrochemiluminescence efficiency and complete nanomaterial performance. When the specific electrochemiluminescence gold nanocluster is used as an ECL luminophore, and an hOGG1 ECL sensor with triethylamine (TEA) as a co-reactant is applied to detection of human 8-oxoguanine DNA glycosylase (hOGG1), the sensor has higher sensitivity and shows good sensing potential. The sensor is simple to operate, has good repeatability, and has important scientific significance and application value for early clinical diagnosis.

The invention relates to the technical field of refractory metal cathode materials, in particular to a barium-tungsten cathode material and a preparation method thereof. The preparation method of the barium-tungsten cathode material comprises the following steps: (1) preparing roughened tungsten powder; (2) preparing doped zirconium oxide powder; (3) mixing raw materials, pressing and forming; (4) sintering a green body; according to the barium-tungsten cathode material disclosed by the invention, the cathode material has relatively high internal porosity while having excellent hardness, so that excellent emission performance is ensured, the problem that the mechanical performance and the porosity of the traditional barium-tungsten cathode material cannot be maintained at excellent levels at the same time is solved, and the barium-tungsten cathode material has a good application prospect in the aspect of the cathode material for a vacuum electronic device. Wide application prospects are realized.

The application relates to the technical field of optical display, and provides a vehicle-mounted HUD sunlight backflow suppression method based on a radiation refrigeration material, which comprises the following steps: acquiring a key heat generation area in a vehicle-mounted HUD affected by sunlight backflow; determining the type of the radiation refrigeration material according to the structural form of the key heat generation area; wherein the type of the radiation refrigeration material at least comprises a radiation refrigeration film or a radiation refrigeration coating; pre-treating the key heat generation area to obtain a target area to which a matching material is coated or attached; coating or attaching the radiation refrigeration material prepared in advance to the corresponding target area based on the determined form type, and blocking the heat absorption caused by the sunlight backflow through the high sunlight reflection characteristic of the radiation refrigeration material, and forming a preset radiation heat dissipation channel through the high mid-infrared emission characteristic to dissipate the heat accumulated in the target area. The application can effectively suppress the severe temperature rise problem caused by the sunlight backflow focusing in the HUD.

The invention relates to the technical field of high-speed optical communication components and driving circuits, in particular to a stability optimization method based on an electric absorption modulator in a specific bias voltage interval, which comprises the following steps: adjusting a parallel matching resistor of an EAM modulation port from 50 ohm to 70 ohm, and forming a stable working area with TDECQ fluctuation not exceeding 0.5 dB in a bias voltage interval of-1.3 V to-1.6 V. According to the invention, on the premise of not introducing an additional compensation circuit or a signal processing algorithm, the sensitivity of TDECQ to the bias voltage is significantly reduced, and the signal integrity, production consistency and environmental robustness of the light emitting module are improved.

The utility model relates to the field of router antennas, in particular to a router antenna with a folding function. The router antenna with the folding function comprises a router body, supporting frames, main antennas and auxiliary antennas, the supporting frames are arranged on the left side and the right side of the router body respectively, the main antennas are rotationally arranged on the front sides in the supporting frames respectively, and the auxiliary antennas are hinged to the rear ends of the main antennas respectively. According to the utility model, through the design of the main antenna and the auxiliary antenna, the signal receiving and transmitting capability can be effectively enhanced, the network performance is improved, meanwhile, the unique foldable design is very practical, and the router is small in size and convenient to carry and store in a folded state; and when the antenna needs to be used, the antenna is unfolded, the signal coverage range can be expanded, the use requirements of a user in different scenes are met, and portability and signal quality are both considered.