143results about How to "Avoid shielding" patented technology

Provided are a magnetic field shield sheet for a wireless charger, which blocks an effect of an alternating-current magnetic field generated when a charger function for a portable mobile terminal device is implemented in a non-contact wireless manner on a main body of the portable mobile terminal device and exhibits excellent electric power transmission efficiency, a method of manufacturing the sheet, and a receiver for the wireless charger by using the sheet. The sheet includes: at least one layer thin magnetic sheet made of an amorphous ribbon separated into a plurality of fine pieces; a protective film that is adhered on one surface of the thin magnetic sheet via a first adhesive layer provided on one side of the protective film; and a double-sided tape that is adhered on the other surface of the thin magnetic sheet via a second adhesive layer provided on one side of the double-sided adhesive tape, wherein gaps among the plurality of fine pieces are filled by some parts of the first and second adhesive layers, to thereby isolate the plurality of fine pieces.

The invention discloses a central air conditioner intelligent control system based on a wireless sensor network and a method, and belongs to the technical field of central air conditioner control. The central air conditioner intelligent control system comprises an intelligent information management center, wireless communication devices, a central air conditioner information monitoring and control module, a room information monitoring and control module and the like. The invention adopts the method that the central air conditioner intelligent control system is used to monitor information, build a data base, calculate current load of the system, and realize advance, accurate and optimized control of a central air conditioner system by combining a short-term loading forecasting method based on similar dates and fuzzy control technology, as well as taking the temperature variation of supply/return chilled/cooling water of a central air conditioner as the manipulated variable. The central air conditioner intelligent control system has the characteristics of great communication capacity, guaranteed communication quality, powerful network functions, wide monitoring range and extensive control quantity of the central air conditioner system, optimized control, high control accuracy, good energy saving effect and the like, and can be widely used in energy-saving optimizing control of various buildings, and is particularly suitable for energy-saving optimizing control of central air conditioners of intelligent buildings.

The invention discloses a static spraying powder paint and preparing technology for electromagnetic wire and enameled wire, which comprises the following parts: 60-88% resin, 7-15% solidifier, 1-5% dye, 0-20% filler, 2-6% adjuvant. The preparing method comprises the following steps: blending the materials together; fusing to squeeze; cooling to indoor temperature; grinding into piece shaped material; separating the grinded powder into less than 160 order semi-product; demagnetizing to obtain the product.

The invention relates to a method for thinning a metal solidification texture, which belongs to the technical field of material processing. A pulse magneto liquid level vibration method achieves a better thinning effect by acting a multi-layer coil on a liquid metal level. The method comprises the following steps of: arranging a non-contact multi-layer oil at a position 0.1 to 20cm above the liquid metal level; and performing pulse magneto liquid level vibration treatment, wherein treatment parameters comprise a pulse current I of 10 to 10,000A, a pulse width of 10mus to 50ms and an acting frequency f of 0.01 to 2 kHz. In the invention, the multi-layer is acted on the upper surface of a metal melt, practical operation is very simple and convenient, and the solidification texture of a cast ingot has an obvious thinning effect. When the method is applied to industry, the action mode can realize non-contact melt processing, and the coil can be conveniently moved to perform bath processing to improve production efficiency; and, shielding effects of a cast molding machine or a crystallizer on a magnetic field can be avoided. The method is suitable for die casting, semi-continuous casting and continuous casting production in the metallurgic industry and suitable for thinning the texture of various metal materials.

The present invention provides a crude lipase enzyme solution of Yarrowia lipolytica microzyme CGMCC No.2707 and a method for synthesizing biological diesel oil by catalyzing the hydrolization and esterification reaction of waste animal and vegetable fat by the immobilized lipase of the crude lipase enzyme solution. A method for preparing the lipase crude enzyme solution and the immobilized enzyme is also provided. The method uses hydrolization and esterification reactions of the oil and fat use lipase as catalysts, but does not use strong acid and strong base. The method has the advantages of mild reaction condition and small pollution. Organic solvent is not used during the entire production process of the fatty acid methyl ester/ethyl ester. The reaction is safe and the efficiency is high.

An embodiment of the invention provides electronic equipment and an antenna. The electronic equipment comprises a display screen, a body and a rotating shaft. The rotating shaft is arranged between the display screen and the body and is used for connecting the display screen with the body. The electronic equipment is characterized by comprising the components of at least one metal shaft which is arranged in the rotating shaft and is used for transmitting and receiving a signal; and an antenna feed point which is connected with one metal shaft in at least one metal shaft and is used for signal transmission between at least one metal shaft and the body. According to the embodiment of the invention, the antenna can be designed in the rotating shaft, and antenna shielding by the housing can be prevented. The electronic equipment and the antenna further have advantages of no requirement for windowing, attractive appearance and cost reduction.

The invention relates to laser processing and in particular relates to a prismatic irregular hole underwater laser shock peening method and a device for realizing the same. The method comprises the following steps: precisely matching a matching pin of which the surface hardness value is higher than that of a workpiece with a prismatic irregular hole, putting the workpiece in an underwater opposite hole side area and performing laser shock peening; introducing incident laser beams into the prismatic irregular hole for peening the inner wall of the prismatic irregular hole by utilizing a total reflector arranged in the prismatic irregular hole, adopting large-size square light spot laser beams in a non-prismatic area, adopting small-size square light spot laser beams in gradual transition in a prismatic area, and linearly changing the sizes of the light spots perpendicular to the edge direction in the prismatic area, wherein the sizes of the light spots are smaller at positions closer to the edge. Meanwhile, a jump mode and a thickened absorption layer are matched, the laser shock peening quality is guaranteed. According to the method, hole edge collapse and a plasma shielding effect can be effectively avoided, and the method is suitable for peening the inner wall of the prismatic irregular hole with the edge angle of less than 90 degrees and a hole edge area.

The invention relates to a watch chain, in particular to an electronic watch chain with the function of solar batteries and a preparation method thereof. The electronic watch chain with the function of the solar batteries is obtained by connecting a plurality of chain links, wherein a chain link body is taken as a substrate of each chain link; a back paint layer, a back electrode layer, a thin-film electrode layer, a front electrode layer and a surface paint layer are sequentially laminated on the surface of the chain link; both ends of the chain link are provided with two pairs of hinged holes respectively; an insulating pin is inserted into the hinged hole; a conducting rubber ring is sleeved at the position, which is required to be conductive, of the periphery of the insulating pin; and an insulating rubber ring is sleeved at the position which is required to be insulated so as to ensure that electrodes of every two chain links which are required to be connected are conducted and different electrodes are insulated from each other. The electronic watch chain with the function of the solar batteries can ensure that the solar batteries have adequate illuminated faces, the mutual interference between the solar batteries and an antenna reception system in a machine core is reduced, the mutual shielding between the solar batteries and the antenna reception system is avoided, and the electronic watch chain has high decorative property and installability.

The invention provides a synthetic method of puerarin derivatives, which relates to the field of compound synthesis. At present, a main functional group, i.e. a phenolic hydroxyl group of puerarin, is combined or shielded in the puerarin structure transformation and modification, and the biological activity of matters is lowered. Secondary amine firstly carries out Mannich reaction with formaldehyde so as to generate Mannich alkali, and the Mannich alkali carries out condensation reaction with the adjacent position of the phenolic hydroxyl group of the puerarin so as to generate the puerarin derivatives. The synthetic method of puerarin derivatives not only avoids combining or shielding the main functional group, i.e. the phenolic hydroxyl group of the puerarin, but also provides a new method for the structure qualification of isoflavonoid.

The invention discloses a microwave reaction synthesis method for an endogenous metal matrix composite material, which comprises the following steps: preparing a reaction sample; filling the sample, namely filling the pressed sample into a reaction device, and filling an SiC wave-absorbing agent around the sample; pumping vacuum; synthesizing microwave, namely regulating microwave input power to alower limit value, closing a gate and powering on the sample; preserving heat, namely when the color of the reaction sample is suddenly changed and simultaneously the temperature change curve recorded by far infrared rays is hastily raised to produce sharp steep peaks, reducing the microwave input power to preserve the heat, and stopping microwave input after the heat is preserved for a certain time; and discharging the sample from a furnace, namely after a vacuum furnace is cooled, taking the reaction device out, and taking the reaction sample out from the reaction device to obtain the endogenous composite material. The microwave reaction synthesis method has the advantages of simple process operation, safety and reliability, energy conservation and time saving, environmental protectionand simplified operation process, can greatly reduce the energy consumption, saves the energy as high as 70 to 90 percent, and shortens the preparation period which is generally about 15 minutes.

The invention provides an antenna module group comprising a body made of a conductor material, a substrate, and a grounding part being grounded. The substrate accommodated into the body and the body are arranged at an interval to form a first gap between the substrate and the body. A notch is formed in one end of the grounding part; the grounding part is arranged in the first gap and is connected to the substrate and the body electrically; and a second gap is formed at the position, corresponding to the notch, of the first gap. With the antenna module group, a shielding effect, caused by a conductor housing, on the antenna module group can be avoided effectively and the good appearance can be kept. In addition, the invention also provides a wearable electronic device having the antenna module group.

The invention relates to a dynamic covalent bond cross-linked oil displacement polymer and a preparation method thereof. According to the invention, acrylamide is used as a main monomer to increase the length of molecular chains, so that the frictional resistance between the molecular chains is increased to improve the viscosity of a solution, diacetone acrylamide is used as a functional monomer to copolymerize with acrylamide to introduce keto-carbonyl into a polymer chain to realize crosslinking with adipic dihydrazide, and thus the nonionic polymer cross-linked by the dynamic acylhydrazone bonds is obtained. The polymer chain does not have ions, so that charge shielding and flocculation effects of various salt ions are avoided, and relatively high viscosity can be kept in hypersalinity water. The polymer takes an acylhydrazone bond which can be dynamically formed and dissociated as a chemical crosslinking point, and the acylhydrazone bond is used as a stimulus-responsive dynamic chemical bond, so that the reversibility of physical crosslinking is maintained, the strength of chemical crosslinking is also realized, and reversible formation and fracture can be realized under the stimulation of an external environment so as to overcome the defect of poor shear resistance of a traditional polymer.

The invention discloses a micro-fluidic chip for viscosity testing, and a preparation method. The chip comprises five structures: a PDMS substrate with a miniature groove, detection electrodes, a PVDF nanofiber film, a PDMS film and a PDMS cover plate with a miniature channel. The preparation method comprises the steps: firstly making the substrate with the miniature groove and the PDMS miniature flow channel cover plate through the photoetching of SU8 photoresist and the demoulding technology; secondly making a pair of detection electrodes at two sides of the miniature groove of the PDMS substrate through employing a mask magnetron sputtering method; thirdly transferring the PVDF film, made through employing an electrostatic spinning method, to the electrodes; finally carrying out the bonding of the substrate and the cover plate, and forming a complete micro-fluidic chip. The micro-fluidic chip is stable in structure, facilitates the integration, is small in number of demands for samples, has no requirements for class, is short in testing time, does not need power, and facilitates the extension of a manufactured micro-fluidic chip viscometer to miniaturization even a hand-held type.

The threat determination process for CT scan of baggage eliminates the need for complete reconstruction the bag. The CT scan data is analyzed during scanning to locate potential threats. The analysis is based upon a lineogram representing objects in the bag. The mass, size, location and atomic number of objects are determined based upon the lineogram data. Any potential threats are further subjected to data modification and reconstruction to enhance the view of the potential threat. Dual energy scanning may also be used to determine density for resolution of potential threats.

The invention relates to a multi-unmanned aerial vehicle charging parking apron area guiding and landing management system. The system comprises unmanned aerial vehicles ends, parking apron ends and amanagement server end. Each unmanned aerial vehicle end is provided with a microprocessor and a beam transceiver, wherein each beam transceiver is arranged at the bottom of an unmanned aerial vehicle, can vertically emit light beams downwards under the control of the microprocessor, and can transmit an optical signal received from the parking apron end to the microprocessor; each parking apron end is provided with a microprocessor and a beam transceiver, and each beam transceiver is arranged on a parking apron, can vertically emit the light beams upwards under the control of the microprocessor, and can transmit an optical signal received from the unmanned aerial vehicle end to the microprocessor; and the management server end is used in the management of guiding and landing each unmannedaerial vehicle through each parking apron end, and a management server only manages one parking apron end in each monitoring period.

This invention discloses a network isolation device load balancing method based on L2 data forwarding: Step 1, Configuring the network isolation device and the gateway array; Step 2, Setting the weight of the link; Step 3, Forwarding messages according to the weight and link health, wherein: when the request of the inner network server is received, the gateway array I chooses the forward isolation device, then modifies the destination MAC address of the received messages to the selected inner network MAC address of the forward isolation device, and forwards the inner network MAC address; when the request of the outer network server is received, the gateway array II chooses the backward isolation device, and then modifies the destination MAC address of the received messages to the selected outer network MAC address of the backward isolation device, and forwards the outer network MAC address. The method has the advantages of saving IP resources, reducing the transformation cost at the same time during the isolation array implementation to the running business, and further making the link health detection more reasonable.

The invention provides a supramolecular assembly based on a polyethylene glycol-b-poly-L-lysine and polyaliphatic ether dendrimer-b-DNA hybrid and a preparation method. Morphological control of the supramolecular assembly is realized by changing the charge proportion of polyethylene glycol-b-poly-L-lysine and polyaliphatic ether dendrimer-b-DNA hybrid in the supramolecular assembly, so that a new concept for researching and developing the property and assembling mechanism of the supramolecular assembly structure is provided, and further expansion of the application field of the supramolecular material becomes possible.

The present invention relates to an antenna structure and a wireless communication device using the same. The wireless communication device includes a metallic housing and an antenna structure. The antenna structure includes a feed end and a radiator. The radiator is connected to the feed end and extends towards the metallic housing. The metallic housing defines a gap between the metallic housing and the radiator for coupling the metallic housing with the radiator through electromagnetic induction. A size of the gap is determined by a wavelength of wireless signals received or transmitted by the wireless communication device. The radiator and the metallic housing cooperatively resonate in at least two modes. The metallic housing of the present invention is equipped with the gap, so that the metallic housing forms a part of the antenna structure, a shielding effect caused by the metallic housing to an antenna is avoided, the size of the antenna and the occupation space are reduced, and an effect of reducing cost is realized.