38results about How to "Good application space" patented technology

The invention discloses a device for carrying out real-time satellite alignment on a moving satellite antenna. The device comprises the satellite antenna, a supporting driving unit connected with the satellite antenna and a real-time tracking control unit. The supporting driving unit comprises a supporting assembly and a driving assembly which is arranged on the supporting assembly and can carry out adaptive adjustment on the spatial orientation of the satellite antenna. The real-time tracking control unit comprises a microcontroller unit (MCU), an inertia measurement unit (IMU), a GPS and/or BD positioning module and a beacon receiving module, wherein the IMU, the GPS and/or BD positioning module and the beacon receiving module are in communication with the MCU to obtain the current posture data and geographic position data of the satellite antenna and the beacon data of a satellite. The IMU further comprises a thermometer which is used for obtaining real-time temperatures to carry out compensation on the posture data according to the real-time temperature state, and the MCU is in communication with the driving assembly. The device for carrying out real-time satellite alignment on the moving satellite antenna has the advantages of being small in size, light, low in energy consumption and low in price.

The invention relates to a solar heat superconducting heat-gathering device and belongs to the technical field of solar heat utilization. The device is particularly suitable for aspects of heat-gathering power generation, heat supply, water supply, drying, heating, industrial heat exchange and the like. The device comprises a vacuum glass tube or a solar evacuated collector tube , a multi-curved surface special-shaped metal heat-exchanger tube, a superconducting medium, an evaporator, a frame, an upper shell and a lower shell, wherein the evaporator is provided with a totally-closed pressure-bearing case, the totally-closed pressure-bearing case is provided with a plurality of multi-curved surface special-shaped metal radiating tubes inside, and the lower ends of the multi-curved surface special-shaped metal radiating tubes are fixed on the bottom of the totally-closed pressure-bearing case through heat-exchanger tube connectors; the multi-curved surface special-shaped metal heat-exchanger tube is hermetically communicated with the multi-curved surface special-shaped metal radiating tubes in the evaporator and filled with the superconducting medium; and the vacuum glass tube or the solar evacuated collector tube is sleeved on the outside of the multi-curved surface special-shaped metal heat-exchanger tube, the frame is arranged between the upper shell and the lower shell, and the upper shell is fixedly connected with the lower shell through the frame.

The invention discloses a method of searching a frequency division duplex mobile communication system downlink synchronizing signal. The method comprises steps that S1, a radio frequency power amplifier is adjusted according to a yield value controlled by an automatic gain, and receiving data after the adjustment of the radio frequency power amplifier is cached; S2, whether a downlink synchronizing signal exists in the next downlink synchronizing signal transmitting period is detected: when the downlink synchronizing signal is detected, the position of the downlink synchronizing signal and the yield value controlled by the automatic gain are output, and a searching process is quitted, when the downlink synchronizing signal is not detected, a step S3 is executed; S3, whether a completed searching period number reaches a maximum searching period number is determined: when the completed searching period number reaches the maximum searching period number, the identifications of the unsearched downlink synchronizing signals are output, and the searching process is quitted, and when the completed searching period number does not reach the maximum searching period number, the yield value controlled by the automatic gain is adjusted, and the step S1 is executed. By adopting the method, the amplitude of the synchronizing signal is adjusted in a proper range in a short time, and a searching success rate is improved, and searching time is shortened.

The invention discloses a low-permeability oilfield water attack composite fracturing process method. According to the method, high-density and strong-corrosion single-slug acid liquid is used for replacing well liquid to serve as impact liquid, the pressure starting rock breaking effect can be improved, corrosion and seam expansion are further achieved directly, and the pressure drop change of acid tank switching is overcome; in cooperation with a computer programming type acidizing pump, a variable-displacement pumping mode is adopted, further and effective combination of underground hydraulic impact with high pressure and short duration and ground hydraulic impact with low pressure and long duration is achieved, and therefore a crack net can be further formed; and meanwhile, the acidizing treatment radius is enlarged. The process method is simple, feasible and low in cost, construction equipment does not occupy too much space, the yield increasing effect is remarkable compared witha single measure, and the method has good application space in ocean platforms or well sites with limited construction space or water sources.

The invention relates to a hydrogen fuel cell polymer film and a preparation method thereof. The hydrogen fuel cell polymer film consists of the following components in parts by weight: 12-15 parts of polyaniline, 3-5 parts of triethylene diamine, 2-4 parts of phenylethylene oxide and 8-11 parts of ethyl acrylate. The preparation method comprises the following steps of: dissolving the substances through different solvents, uniformly mixing, then performing reduced pressure distillation to remove the solvents, then soaking in water, and drying to obtain the hydrogen fuel cell polymer film. The hydrogen fuel cell polymer film has a high electron conductivity which is 0.054-0.112S/cm.

The invention provides a fusion calculation method of MODIS broadband emissivity and GLASS broadband emissivity. The method comprises the following steps: firstly, converting MODIS narrow-band emissivity into the MODIS broadband emissivity, respectively fitting the MODIS broadband emissivity and the GLASS broadband emissivity on the basis of a mixed index model, so as to obtain corresponding covariance model coefficients, which include a block variance, a base variance of a first index model and a base variance of a second index model; respectively determining corresponding adjusting operators of the MODIS broadband emissivity and the GLASS broadband emissivity by the obtained block variance, base variance of the first index model and base variance of the second index model; calculating corresponding error covariance models by the adjusting operators; and carrying out a fusion of the MODIS broadband emissivity and the GLASS broadband emissivity by an ideal interpolation algorithm on the basis of the two error covariance models. Compared with a fusion method in the prior art, by the fusion method of the broadband emissivity, a better fusion effect is obtained; and the ideal interpolation has a better application space in fusion of surficial remote sensing products.

The invention relates to an annular hot-liquid-jet scale cleaning device for a barrel body. The annular hot-liquid-jet scale cleaning device comprises a reaction tank and an exhaust barrel, wherein a centrally-heating annular jet unit and a movable elastic ultrasonic vibration unit are arranged on the upper part of the exhaust barrel; and the centrally-heating annular jet unit comprises a first hydraulic cylinder, a first push rod, a hollow pipe, a transversal line guide pipe, a heating controller, a vertical line guide pipe, an acid conveying pipe, an acid feeding pipe, a fixed-displacement pump, a waste acid storage box, a booster pump, a spray tank, an acid liquid cavity, a spray cavity, an S-shaped spray head, a heating cavity, an acid pumping pipe and an acid inlet pipe. The annular hot-liquid-jet scale cleaning device disclosed by the invention is high in automation degree, capable of effectively removing scales of the barrel body, and high in cleaning efficiency.

The invention belongs to the technical field of electron-beam lithography, specifically to a method for using gray-tone exposure to generate a miniature picture in the micro-nano size. The method of the invention comprises the steps as follows: firstly using Beamer software to form an exposure file, applying a layer of photoresist to the surface of a silicon wafer through spin-coating, and obtaining the miniature picture in the micro-nano size after development by using the electron-beam lithography. According to the invention, the electron-beam lithography is used to expose the photoresist. The photoresist in different thicknesses has different black and white gray tones after development so as to generate the miniature picture in the micro-nano size. The method of the invention can control the shape of micro-nano graph structure. The generated miniature picture has a nanometer-level resolution ratio, and large area manufacture can be achieved.

A preparation method of degradation-controllable polypropylene carbonate belongs to the technical field of high polymer materials and comprises the following steps: weighing 100g of polypropylene carbonate, putting the polypropylene carbonate into a reactor, adding 600-900ml of a solvent into the reactor, stirring and dissolving at 25-30 DEG C, adding 0.1-5g of an organic auxiliary agent which is an organic alkali or quaternary ammonium salt, continuously stirring for 1-5 hours, and then adding 0.1-5g of a catalyst into the reactor, and decompressing to remove the solvent, and drying in vacuum. According to the preparation method, the metal-free organic additive is introduced into the polypropylene carbonate, so that the accurate control of the thermal degradation temperature of the polypropylene carbonate is realized, the degradation temperature interval can be effectively reduced, the lowest degradation temperature can reach 170 DEG C, and the complete degradation temperature interval can be controlled to be reduced to 51 DEG C. As the non-metal organic auxiliary agent is used, the ash residue after the material is degraded is not increased in the preparation process, so that the material has a very good application space in the field of electronic products.