184results about How to "Realize the shielding effect" patented technology

The invention provides an intelligent monitoring alarm system based on the Internet of Things. An alarm collection fusion module is used for employing the alarm data information of all subsystems, andenabling the subsystems with different functions to be fused to a unified monitoring platform. An alarm processing module is used for realizing alarm compression and shielding. When a clear internalassociation relationship exists in the multiple parts of alarm information, the cross-resource association is carried out. A fault source is automatically associated and positioned, and redundant alarms are shielded. An alarm shielding condition setting port is further provided, alarm shielding conditions preset by the port are set according to the alarm shielding conditions, and alarm informationis shielded. The alarm source is positioned. An alarm record display and query module is used for displaying alarm information. Alarm logs and various subsystem running logs are collected, and the collected logs are stored in a log information base. The setting of a log query port according to the log level, the log generation time period and the log receiving time is also supported.

The invention provides a method, a device and a system for online monitoring of a mobile terminal, aiming at shielding dangerous or unhealthy web pages with finer granularity. The method comprises the steps of receiving a page access request; determining whether the mobile terminal corresponding to the identification information is the monitored mobile terminal; if the mobile terminal is the monitored mobile terminal, obtaining one or more keyword information for describing the content of the page to be accessed; determining the type of the first page related to one or more keyword information; determining whether the page to be accessed is the page allowed to be accessed by the monitored mobile terminal; if the page to be accessed is not the page allowed to be accessed by the monitored mobile terminal, giving up the page access request, or sending non-access indicating information to a mobile gateway.

In a multi-layer metal net grid electromagnetic shielding optical window employing femtosecond laser etching, a plurality of transparent dielectric plates etched with metal net grids are laminated, and a conductive metal net grid layer and a ferromagnetic metal net grid layer are etched on a surface of each transparent dielectric substrate from top to bottom. By a femtosecond laser direct-writingdeep-etching processing technology, metal net grid patterns such as lattices, round rings, diamonds and hexagonal shapes are etched on the surfaces of the transparent dielectric substrate coated withphotoresist, a layer of metal nickel or iron ferromagnetic metal thin film is plated on the etched substrate, a layer of gold or silver excellent conductive metal thin film is plated on the nickel layer, the conductive metal thin film is placed in an organic solvent to remove the photoresist and a metal part which is not needed to obtain a metal net grid. The fabricated metal net grid is difficultto scratch and fall off and is long in service lifetime. The ferromagnetic material and the conductive metal material are combined, a shielding effect can be developed at a wide band from a low-frequency electromagnetic band to a high-frequency electromagnetic band, and the multi-layer metal net grid electromagnetic shielding optical window has the characteristics of high electromagnetic shielding and high transmission of visible light and infrared light.

It is a method of preparing functional antibacterial fiber. Its character lies in that CD grafted to cellulose fiber to Form cyclodextrin-cellulose fiber polymer including chloramphenicol serving to be antibacterial. Compared with the existing technology, the invention of the advantages are : a) the CD received cellulose fiber, CD Modified fiber formation, and then use the fiber of cyclodextrin inclusion drugs, achieving CD - cellulose polymer drug screening, controlled drug release, the protection function of drug activity; 2) Antibiotics can be functional fiber weaving, tailoring, made of various kinds of medicinal materials functional textiles, Surgical dressing for antibacterial materials, wartime emergency bandaging materials, and better meet the medical needs of a different.

The invention provides a signal interference device and method. The device comprises a receiving link which is used for receiving an air signal and converting the air signal into a digital signal, andsending the digital signal to a programmable interference source module; the programmable interference source module which is used for carrying out de-synchronization processing on the digital signal, and generating a transmission modulation signal according to the de-synchronization processing result, and transmitting the transmitting modulating signal to a transmitting link; the transmitting link which is used for receiving the transmitting modulating signal, converting the emission modulating signal into a modulation interference signal, and radiating the modulation interference signal tothe air. According to the invention, the problem that a terminal signal interference device in the prior art is high in power requirement and relatively large in power consumption, and cannot completely block the terminal communication.

The invention discloses an electric vehicle high-pressure elbow connector capable of 360-DEG rotating, which belongs to the field of electric vehicle high-pressure interconnection. The high-pressure elbow connector is composed of a plug assembly and a socket assembly, wherein the plug assembly comprises a pin assembly, a first plug assembly, a tail assembly and a connection assembly; and the socket assembly comprises a jack assembly and a first socket assembly. The high-pressure elbow connector can rotate for 360-DEG, a full-direction rotating function is good, and a full-direction shielding effect can be realized; and the high-pressure elbow connector of the invention also has the advantages of being high in reliability, reducing unnecessary repeated development, reducing resource consumption and the like.

The invention provides a graphene mesh/double-layer metal mesh transparent electromagnetic shielding device having a bidirectional wave-absorbing effect, belongs to the technical field of optical transparent part electromagnetic shielding, the electromagnetic shielding device utilizes different light-transmitting and microwave shielding characteristics which are shown when a graphene mesh film has different mesh unit hole area ratios, characteristics of low reflection and partial absorption of microwaves of the graphene mesh film and a strong electromagnetic reflection characteristic of a high-light-transmitting double-layer metal mesh are organically combined, and the multilayer graphene mesh film is arranged at two sides of the double-layer metal mesh to form a multilayer stacked structure; the double-layer metal mesh is used as a transparent reflecting layer, and N layers of graphene mesh films separated by transparent mediums are used as transparent absorbing layers; the structure can enable radio frequency radiation at two sides of the device to pass through the absorbing layers for many times to be strongly absorbed, bidirectional strong shielding and low reflection characteristics are realized, and visible light only penetrates through the stacked structure only once and a high light transmittance is achieved; and the electromagnetic shielding device solves the problem that an existing transparent electromagnetic shielding method cannot give consideration to bidirectional low electromagnetic reflection, strong electromagnetic shielding and high light transmittance at the same time.

The invention provides an electric connector. The electrical connector includes a plastic body, a plurality of conductive terminals accommodated in the plastic body, and a shielding shell covering the outside of the plastic body and the conductive terminals. The conductive terminals include a ground terminal, a pair of differential signal terminals provided adjacent to the ground terminal, and a power supply terminal disposed inside the adjacent differential signal terminals. The conductive terminals further include a ground mechanism connected to the ground terminal, which is at least partially disposed between the power supply terminal and the ground terminal, as viewed in the thickness direction of the electrical connector.

A paraffin-prevention and viscosity-reduction rectifier of an oil field flowing well is suitable for extracting oil from an oil field high-pressure well, and the long-standing, big and difficult problem that paraffin and scale of a flowing well are scraped and removed through manual work since the beginning of the oil exploitation history is solved. The rectifier is a tubular tool and mounted in the position about one thousand meters under a paraffin-troubled well section of the well. A first-level vortex rectifier body, an impinging stream phase mixing device, a second-level vortex rectifier body, an impact type acoustic oscillator and a third-level vortex rectifier body are mounted in the rectifier from bottom to top, a large-cluster laminar-flow condensed phase state of flowing oil, gas and water can be treated to form a fine-cluster milky eddying turbulence phase state, all heterogeneous components are made to wrap one another, refining, scattering and shielding of paraffin crystals and scale crystals are achieved, the physical state, the physical property, the flow state and the flow speed of produced liquid are optimized, and the phenomenon that the well is blocked by gathered paraffin and scale crystals on the oil tube wall is fundamentally eliminated; and meanwhile, the viscosity of the produced liquid is greatly lowered, the in-well burble procedure is effectively prolonged, manual paraffin and scale scraping and removing are omitted, workover treatment is reduced, oil extraction cost is lowered, and production and efficiency are improved.

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 an electromagnetic shielding package body which includes: a substrate; at least two chips which are disposed on the substrate; a shielding body which is made of a shielding gel and covers the chips and separate the chips from one another so as to provide electromagnetic shielding between the chips and the environment and among the chips, wherein the shielding body is grounded through a conductor; and an insulating layer which is made of an insulating gel, wherein the insulating layer is coated to a conductive structure of the chips, in supposedly electrical insulation from the shielding body, and/or is coated to a conductive structure of the substrate, in supposedly electrical insulation from the shielding body, such that the conductive structure and the shielding body are electrically insulated. The invention also relates to a method for manufacturing such electromagnetic shielding package body.

The invention provides a three-dimensional stack structure of a thin-film ceramic circuit. Between two adjacent thin-film ceramic substrates, through ball mounting welding or prefabricated pad welding, stacking of more than three thin-film ceramic circuit substrates is realized. Solid metal through holes are used for realizing electric connection of a random layer. The structure comprises a local electromagnetic self-shielding structure of a chip and/or a passive component. The local electromagnetic self-shielding structure comprises an upper metal layer, a lower metal layer and side surface solid metal through holes. The three-dimensional stack structure can realize stacking of the thin-film ceramic circuit so that an active chip, an RF structure, a high-power structure, a broadband switching structure and the like are integrally integrated in a three-dimensional direction, thereby reducing plan area of a function core by more than 70%, effectively improving product integration level, synchronously realizing hermetic sealing and electromagnetic self-shielding, and improving product adaptability. The three-dimensional stack structure can replace 60-70% of similar products and has advantages of saving cost by more than 60% and improving production efficiency by more than 40%.

The invention discloses a shielding cabinet which comprises a cabinet body and a shielding door, the shielding door is rotatably connected with the cabinet body through a door shaft, three vertical faces of the cabinet body are cabinet body metal plates formed by bending a complete steel plate, the top of each cabinet body metal plate is fixedly connected with a top plate metal plate, and the bottom of each cabinet body metal plate is fixedly connected with a bottom plate metal plate. Welding a stainless steel shielding edge metal plate on an opening edge formed by the cabinet body metal plate, the top plate metal plate and the bottom plate metal plate; the shielding door comprises a shielding door outer door plate and a stainless steel inner door plate which are sequentially installed from outside to inside, and the stainless steel inner door plate is matched with the stainless steel shielding edge metal plate in shape. Shielding can be achieved through combination of the stainless steel inner door plate and the stainless steel shielding edge metal plate between the cabinet body and the shielding door, a stainless steel plate does not need to be adopted for manufacturing the cabinet body, and a large amount of raw material cost is saved; the shielding door is divided into the shielding door outer door plate and the stainless steel inner door plate, the shielding door outer door plate is independently processed and sprayed with anti-rust paint, and the welding difficulty and sealing requirements of the shielding door outer door plate are reduced.

The invention provides a full-format network-wide base station type shielding control conference system and a shielding control method. The system comprises a shielding subsystem, a detection and location subsystem, and an integrated data processing subsystem. The shielding subsystem is used for shielding and controlling network-wide mobile communication signals. The detection and location subsystem is used for detecting mobile terminals and acquiring location information. The integrated data processing subsystem is used for carrying out information collection, summarization, analysis, warning, and equipment management configuration. By adopting the scheme, GSM (Mobile + Unicom) + CDMA (2G+3G) Telecom + TD-SCDMA (Mobile 3G) +WCDMA (Unicom 3G) + TDD-LTE (Mobile 4G) + FDD-LTE (Unicom 4G) + FDD-LTE (Telecom 4G) + WIFI acquiring and shielding can be realized, and call bill analysis can be conducted.

The invention discloses an electromagnetic shielding material, which is prepared from the following components in parts by weight: 30 to 50 parts of ABS (Acrylonitrile Butadiene Styrene), 40 to 70 parts of PA66, 7 to 20 parts of silver-plated carbon fiber, 0.5 to 1 part of a plasticizer, 2 to 4 parts of a solubilizer, and 0.5 to 1 part of an antioxygen, wherein the silver-plated carbon fiber is prepared by plating a silver layer with the thickness being 1 to 500nm on the surface of a carbon fiber by adopting an electrodeless silver plating manner. The electromagnetic shielding material provided by the invention breaks through a traditional melt blending process, process parameters, a processing sequence and an extrusion process for preparing a double-percolation structure are designed, anda percolation threshold value of CF is greatly reduced. The method has the advantages of high production efficiency, simpleness in operation, capability of greatly reducing the material cost, and benefit to mass industrial production.

The invention relates to the technical field of heat conduction and wave absorption, in particular to a high-thermal-conductivity and wave-absorbing shielding gasket and a production process thereof.The high-thermal-conductivity and wave-absorbing shielding gasket comprises a heat-conducting wave-absorbing base material, a release film and a metal layer, the heat-conducting wave-absorbing base material covers the outer surface of the metal layer, the release film covers the outer surface of the heat-conducting wave-absorbing base material, and the heat-conducting wave-absorbing base materialis prepared from heat-conducting powder and magnetic powder. The high-thermal-conductivity wave-absorbing shielding gasket disclosed by the invention not only has excellent thermal conductivity and wave-absorbing performance, but also has good operability and an electromagnetic shielding function, can be widely applied to shielding electromagnetic noise generated by a CPU, an FPC, a digital camera, a microphone, an RAM, an antenna, a component and the like, and can also play a role in heat conduction; and meanwhile, the metal layer in the middle of the product can also realize the omnibearingheat conduction and electromagnetic shielding effects of the material.

The invention discloses a card-inserting type connector. The card-inserting type connector comprises a shell, at least two power supply terminals, a signal terminal mounting part, and a pair of terminal groups, wherein fixed terminals which are connected to a first end part and a second end part are detachably inserted into clamping grooves which are formed in the first end part and the second end part; the power supply terminals which are clamped in the power supply terminal mounting part are detachably inserted in mounting grooves which are formed in the power supply terminal mounting part; two rows of separated terminal grooves are formed in the interior of the signal terminal mounting part; the terminal grooves comprise multiple terminal inserting grooves and multiple separating walls which are positioned among the terminal inserting grooves for separating the terminal inserting grooves mutually; a strip-shaped long groove is formed in the bottom of the signal terminal mounting part between the two terminal groups; conductive plastic is assembled in the strip-shaped long groove; the pair of terminal groups is equipped with multiple signal terminals and grounding terminals; each signal terminal and each grounding terminal are both detachably inserted into one corresponding terminal inserting groove; and all the grounding terminals are electrically connected through the conductive plastics.

The invention relates to a non-contact insect charge-measuring system which comprises an electric field sensor unit, a control and signal-processing unit, a data storage display and power supply unit and can measure an insect charge signal in a non-contact electric field induction mode. The system can measure the electric field signal of an insect in a natural motion state in normal motion environment without changing the charge distribution of the insect, can truly reflect the charge characteristic of the insect in the natural condition, acquire the low-frequency electromagnetic characteristic data of the insect by analyzing collected data, extract the charge characteristic of the insect, and accurately and effectively trap the insect. The non-contact insect charge-measuring system has long service life and wide application prospects in insect basic theoretical research and the field of pest prevention and control.

The invention discloses a high-conductivity copper-clad aluminum cable which comprises an aluminum alloy core. The aluminum alloy core comprises 0.1-1.5% of Cu, 0.02-0.1% of Be, 0.2-0.8% of Mg and the balance Al. A skin layer is made of pure copper, and the pre-heated skin layer warps a core layer under argon protection; a tin layer is sprayed on the surface of the skin layer, and then a silver layer is sprayed on the surface of the tin layer; the surface of the silver layer is wrapped with a layer of silver-plated fiber net, and finally an insulating layer and a protecting sleeve warps the outer portion of the silver-plated fiber net in an extrusion manner. First Be is added into aluminum alloy, and conductive performance of the aluminum alloy is greatly improved; in addition, the conductive performance is more outstanding due to the wrapping of continuous multi-layer conductive layers, and due to the wrapping of the silver-plated fiber net, the conductive performance is also enhanced while shielding effect is achieved; in addition, copper skin wraps the aluminum alloy, the pure copper skin layer also guarantees toughness of the cable while the strength of the core layer is guaranteed, and mechanical performance is greatly improved.

The invention discloses a mobile terminal. The mobile terminal comprises a mold sheet steel 2 and a shielding surrounding layer, wherein the mold sheet steel 2 is fixedly connected with one side of the shielding surrounding layer to serve as a part of a shielding hood; the shielding surrounding layer 2 and the other side of the mold sheet steel 2, which is fixedly connected with the shielding surrounding layer, are connected to a main board 4; and the height of the shielding surrounding layer is higher than that of a component 5 on the main board 4. By adopting the mobile terminal, problems that the ultra-thin structure of an intelligent mobile terminal with a large screen can not be achieved owing to the structure of the shielding hood and the mobile terminal is inconveniently carried by a user are solved, therefore, structural complexity of the shielding hood of the mobile terminal is lowered, the mobile terminal is thinned, and user experience is improved.

Good connections of connectors for devices are made with terminals using conductive rubber. A connector structure for device connection (1, 61) comprises one connector (4, 59) provided on one device case (2, 57) and another connector (8, 68) provided on another device case (6, 66). The one connector (4, 59) is provided with an insulating housing (11, 64) having a plurality of recessed receiving parts (27, 77) in a line, terminals (5, 65) having contact plate parts (13, 82) accommodated in the recessed receiving parts, and conductive rubber (10) in contact with the contact plate parts and accommodated in the recessed receiving parts. The other connector (8, 68) is provided with other terminals (9, 70) having contact plate parts (34, 91) to be inserted in contact with the conductive rubber when the two cases are affixed, and another insulating housing (28, 69) that accommodates the other terminals.