37results about How to "Achieve shielding" patented technology

The utility model discloses a packaging structure and a radio frequency module, and relates to the technical field of radio frequency module packaging. A metal array composed of metal bodies is arranged around a to-be-shielded device, and a metal shielding layer is connected with one end, exposed out of a first plastic package layer, of each metal body and is connected with a substrate, so that cavity-divided shielding of the to-be-shielded device is realized, a complicated internal shielding structure is not needed, and a special process flow is not needed, and therefore, the shielding of the to-be-shielded device among all chips can be realized. Or the chip is shielded from the outside, a metal body can be freely arranged according to the position needing to be shielded, and the quality of the chip is not influenced; a metal array composed of vertical metal bodies is arranged around a to-be-shielded device, a shielding line arc is arranged on the metal bodies, and the shielding line arc spans the to-be-shielded device and forms a shielding cavity with the metal array, so that space waste caused by an arc line can be reduced; the number of layers of the metal arrays is increased, so that the metal bodies of the adjacent layers of metal arrays are distributed in a staggered mode, and / or the distribution density of shielding wire arcs is increased, and the electromagnetic shielding effect can be further enhanced.

The utility model discloses a long-distance anti-metal biaxial 125kHz RFID access control antenna, including RFID reading coil, flexible soft magnetic film and metal layer, flexible soft magnetic film is provided on one side of RFID reading coil, metal layer is provided on one side of flexible soft magnetic film far away from RFID reading coil, RFID reading coil includes Y-axis coil and X-axis coil, the Y-axis coil and the X-axis coil are connected in parallel, and the X-axis coil and the Y-axis coil are connected in parallel. According to the RFID reading coil, the Y-axis coil and the X-axis coil form two axial magnetic fields in an orthogonal mode, the position adaptability of the RFID reading coil to a tag card is further improved, the coil Q value and self-inductance are optimized by optimizing the number of turns and the wire diameter, the magnetic field receiving and transmitting capacity is improved, long-distance recognition is achieved, and the RFID reading coil has the advantages of being simple in structure and convenient to use. The flexible soft magnetic film and the metal layer are additionally arranged on the back of the RFID reading coil, so that shielding of a backward magnetic field is achieved, and the recognition distance can be further increased.

The invention relates to the technical field of electric drive, and discloses a dual-motor controller, which comprises a box body; the number of the driving module assemblies is two; the thin film capacitor is arranged between the two driving module assemblies and electrically connected with the two driving module assemblies; the power distribution module is arranged in the box body and electrically connected with the thin-film capacitor, in the power taking state, the power distribution module outputs current provided by the vehicle battery for the thin-film capacitor to electric equipment, and in the charging state, the power distribution module transmits current of an external power supply to the vehicle battery through the thin-film capacitor; and the EMC filtering assembly is arranged in the box body and electrically connected with the thin-film capacitor, the EMC filtering assembly is provided with a power supply connecting end, and the power supply connecting end is suitable for being connected with a vehicle battery. The internal design of the dual-motor controller realizes the power taking and charging functions of a vehicle battery, the dual-motor controller has the characteristics of multiple functions and high integration, external parts and external high-voltage wiring harnesses are saved, the space and the cost are saved, and the requirements of integration and light weight of a new energy vehicle are met.

The utility model relates to the technical field of connectors, in particular to a fully-shielded connector. The full-shielding type connector comprises a first injection molding module, a second injection molding module, a shielding piece, a first shielding shell, a second shielding shell and a third shielding shell. The shielding piece is clamped between the first injection molding module and the second injection molding module; the first injection molding module and the second injection molding module penetrate through the first insulation body, and the shell wraps the second shielding shell and the third shielding shell. The first shielding shell, the second shielding shell and the third shielding shell wrap the first insulation body, and comprehensive shielding protection is provided for the connector. Conductive parts are formed on the left side and the right side of the main body part of the shielding piece. Protruding parts on the conductive parts are communicated with the first shielding shell, the second shielding shell and the third shielding shell. The connector is compact in structure and low in assembly difficulty, the number of parts is reduced, and the manufacturing cost is lower.

An elastic collar and a baffle cooperated needle puncture prevention device comprises: a catheter seat assembly, the rear end of which is provided with an anti-slip structure; a needle shield, which is provided with a needle through hole, a slide groove, and a slot; an elastic collar, which is sleeved on the needle shield; a baffle, which is slidably installed in the slide groove, a part of which is supported on the inner wall of the elastic collar; a limit plate, which is installed in the slot and is provided with a stop hole; a needle seat, which covers the rear part of the needle shield; a needle tube, which passes through the catheter seat assembly, the needle shield, the baffle, and the limit plate, and provides support for the baffle, and the rear end is fixed in the needle seat, and a protruding buckle is provided near the front end. Pull the needle seat backward to make the needle seat drive the needle tube backward. When the needle tube retreats to the point where the protruding buckle is blocked by the stop hole of the limit plate, the front end of the needle tube retreats away from the baffle, and the baffle slides into the slide groove of the needle shield under the action of the elastic collar, thereby blocking the front end of the needle tube, and the needle tip is shielded in the needle shield, thereby improving the safety of the product.

The invention relates to the field of vehicle control, and provides a prompt information shielding method, electronic equipment and a vehicle, prompt information is received and displayed, and the prompt information is the prompt information displayed during the existence period of a vehicle fault; in the prompt information display process, pressing operation of a target key of a steering wheel is detected, and a target shielding condition corresponding to the target key of the steering wheel is determined; and determining that the pressing operation meets a target shielding condition, and shielding the prompt information. The target key of the steering wheel is the existing key on the steering wheel, so that the function reuse of the keys of the steering wheel is realized, new control hardware does not need to be introduced, and the shielding cost is reduced. Meanwhile, shielding of the prompt information is achieved through the target key of the steering wheel, the shielding operation of the driver on the prompt information is simpler and more convenient, many tedious operations of lowering the head to search for a function key or touching a display screen are omitted, and the driving safety is indirectly improved.

An elastic collar and a stopper cooperated needle puncture prevention device comprises: a catheter seat assembly, the rear end of which is provided with an anti-slip structure; a needle shield, which is provided with a needle through hole, a slide groove, and a slot; an elastic collar, which is sleeved on the needle shield; a stopper, which is slidably installed in the slide groove, one side of which cooperates with the needle tube, and the other side is supported on the inner wall of the elastic collar; a limit plate, which is installed in the slot and is provided with a stop hole; a needle seat, which sleeves the rear part of the needle shield; the needle tube, which passes through the catheter seat assembly, the needle shield, and the limit plate, and provides support for the stopper, and the rear end of the needle seat is fixed in the needle seat, and a protruding buckle is provided near the front end. Pull the needle seat backward to make the needle seat drive the needle tube to retreat, and when the needle tube retreats to the point where the protruding buckle is blocked by the stop hole of the limit plate, the front end of the needle tube retreats away from the stopper, and the stopper slides into the slide groove of the needle shield under the action of the elastic collar, thereby blocking the front end of the needle tube, and the needle tip is shielded in the needle shield, thereby improving the safety of the product.

The utility model discloses a video cable for a robot with a body, which is characterized in that a first shielding tape is lapped outside a cable core formed by twisting at least two signal transmission core wires and at least two electric energy transmission core wires, a metal braid layer is arranged outside the first shielding tape, a sheath layer is coated outside the metal braid layer, and a second shielding tape is arranged outside the sheath layer. A second shielding tape wraps the outer side of a data wire core formed by twisting at least two signal transmission core wires, each of the first shielding tape and the second shielding tape comprises a base material layer and an aluminum foil layer attached to the surface of one side of the base material layer through a glue layer, and the aluminum foil layer of the first shielding tape makes contact with the metal braid layer in an attached mode. According to the utility model, the anti-interference performance can be improved, the anti-bending performance and roundness of the cable can be ensured, and the shielding of high-frequency and low-frequency signals can be realized at the same time so as to improve the signal shielding range.

This invention provides an oral cleaning device and its control method. The oral cleaning device includes a first pressure detection area and a second pressure detection area spaced apart from the first pressure detection area. The control method includes: acquiring first pressure information of the first pressure detection area and second pressure information of the second pressure detection area; determining a shielding state of the first pressure detection area based on the second pressure information; the shielding state includes a shielded state and an unshielded state; when the first pressure detection area is triggered, if the shielding state is unshielded, determining whether to execute a target action based on the first pressure information; if the shielding state is shielded, not responding to the triggering state action of the first pressure detection area. This invention, by combining the detection and processing of the pressure status of the second pressure detection area, can shield the triggering of the first pressure detection area, reducing false triggering of the oral cleaning device.

The present invention discloses a safe hemodialysis indwelling needle, including a hemodialysis needle tube assembly, a catheter assembly and a needle tip shielding assembly. The needle tip shielding assembly is provided with a needle cavity, a needle passage and a limiting mechanism for limiting the needle in the needle cavity to prevent the hemodialysis needle tube needle tip from being pulled off the needle tip shielding assembly. A magnet cavity is also provided in the needle passage, and a first fixed magnet and a movable magnet are provided in the magnet cavity. In the initial state, the movable magnet is outside the needle passage. In the protection state, the attraction between the first fixed magnet and the movable magnet is used to make the movable magnet in the needle passage to seal the hemodialysis needle tube needle tip in the needle cavity, thereby shielding the needle tip and preventing the needle from stabbing people during garbage disposal or recycling, causing injuries and secondary cross infection.

The utility model relates to a carburized surface protective sleeve for cadmium plating of a propeller shell, which comprises an elastic sleeve, abutting ends used for elastically abutting against the inner wall of the propeller shell are formed on the outer walls of the two ends of the elastic sleeve, and an annular packing surface is formed on the outer wall of the elastic sleeve and located between the two abutting ends. The annular packing surface can directly face the carburizing surface of the propeller shell to isolate the carburizing surface; the elastic sleeve is designed on the basis of the cyaniding cadmium plating technological process, on the basis of the structure of the carburized surface of the propeller shell and on the basis of the size of the carburized surface, the elastic sleeve is fully attached to the carburized surface, and a power line is completely shielded, so that a cadmium plating layer is prevented from being deposited on a shielded part, and the elastic sleeve can easily enter and exit from an inner cavity of the carburized surface of the propeller shell; rapid mounting and dismounting are realized, a carburized surface can be fully attached, and shielding of a power line is realized.

The invention discloses a waveform selection antenna, which comprises a first metal structure, a second metal structure, a waveform selection structure and a feed structure, and is characterized in that the first metal structure is connected with the second metal structure, and the second metal structure is connected with the waveform selection structure; the first metal structure is realized by forming a gap in a metal patch structure to form a dipole structure which is internally provided with a circular loop and has a cut-off end part, and the second metal structure is realized by adopting a microstrip line structure; the antenna has the advantages that the waveform selection plane structure and the antenna structure are integrated, the waveform selection plane structure function and the antenna function are integrated, and when the antenna is used for a wireless communication system, the structural complexity of the antenna can be reduced.

The utility model relates to the technical field of moving iron units, in particular to a magnetic leakage prevention box cover which comprises a first lower cover, a first storage bottom cavity is formed in the first lower cover, and a first wire outlet groove is formed in the left side of the first lower cover. According to the magnetic leakage prevention box cover, through the upper cover and the lower cover which are large in upper portion and small in lower portion, the upper cover can cover the lower cover conveniently, the magnetic leakage prevention function of the box cover is achieved, meanwhile, the connecting cavities in the protruding blocks are filled with the connecting cavities in a welding or gluing mode, the protruding block cavities are connected with the lower cover, combination of the upper cover and the lower cover is completed, and therefore the problem of magnetic leakage is completely eradicated; through the flaring sealing square frame and the step supporting square frame of the second lower cover and the second upper cover, the second upper cover and the second lower cover can be more effectively prevented from magnetic leakage after being sleeved up and down, the new upper cover and the new lower cover do not adopt a butt joint mode, and the upper cover and the lower cover are partially crossed to achieve magnetic shielding. And the position of the bottom clamping block is staggered on the two sides to shield the magnetism.

The present invention provides a mutual simulation method between heterogeneous processors, including: setting the value of the MIDR_EL1 bit in the register HFGRTR_EL2 contained in the physical processor to 1 in the kernel space; using a hardware acceleration module to add the register MIDR_EL1 of the simulated virtual processor to the kernel space, and writing the value of the register MIDR_EL1 contained in the physical processor to be simulated; adding the model of the physical processor to be simulated in the virtualization management program, and transferring the value of the register MIDR_EL1 contained in the physical processor to be simulated to the simulated register MIDR_EL1 contained in the virtual processor added to the kernel space. The present invention realizes the shielding of differentiated hardware information in a heterogeneous scenario, realizes the mutual simulation between heterogeneous processors in the heterogeneous scenario and improves the user experience.

The utility model discloses a bending-resistant multi-core shielding cable, and relates to the technical field related to power transmission. The cable comprises a center reinforcing steel strand, an inner ring sleeve and an outer ring sleeve, the center reinforcing steel strand is located on the inner side of the inner ring sleeve, the inner ring sleeve is located on the inner side of the outer ring sleeve, and a first reinforcing wire is inserted in the connecting position of each arc sleeve and the inner ring sleeve in a penetrating mode; a copper-plastic composite wrapping tape and a metal wire mixed woven shielding film are wound outside all the arc sleeves, a second reinforcing wire is inserted into the outer ring sleeve in a penetrating mode, and a copper wire wrapping tape and a copper wire shielding layer are wound outside the outer ring sleeve in a wrapping mode. According to the utility model, the central reinforcing steel strand, the inner ring sleeve, the outer ring sleeve, the first reinforcing wire, the second reinforcing wire, the copper-plastic composite wrapping tape, the metal wire hybrid shielding film, the shielding tape, the copper wire wrapping tape and the copper wire shielding layer are arranged, so that the problems that the bending resistance of the cable is insufficient, the shielding effect of the cable inner wire cores is poor, and the stacking arrangement of the multiple wire cores in the multi-core cable is poor are solved; and local torsional stress can be increased.

The utility model relates to the field of microelectronic, disclose a kind of flexible circuit board, anti-shake motor and electronic equipment.The utility model includes: first metal layer, insulating layer and second metal layer;Bent flexible circuit board's first metal layer includes: first surface and fourth surface, bent flexible circuit board's second metal layer includes: second surface and third surface;First surface, second surface, third surface and fourth surface are sequentially arranged along first direction;Capacitor structure's polar plate unit is etched on first surface, driving chip is arranged on third surface or fourth surface, polar plate is connected with driving chip by first circuit, driving chip is connected with external pin by second circuit, and first circuit and second circuit are respectively at the two sides of driving chip.The structure of bent single-layer flexible circuit board realizes the function of multilayer flexible circuit board structure, avoids crosstalk between circuit while reducing the manufacturing cost of flexible circuit board.

The invention discloses a frequency-independent protective skin antenna which comprises an upper skin, an upper core layer, a substrate film, an amorphous carbon film, an antenna, a lower core layer and a lower skin from top to bottom. When the skin antenna is not irradiated by high-power microwaves, the amorphous carbon film allows electromagnetic waves to pass through, and the skin antenna works normally; when the skin antenna is irradiated by high-power microwaves, the amorphous carbon film induces current and generates a reflection effect on electromagnetic waves, meanwhile, the current inducted on the surface of the amorphous carbon film rapidly generates heat, the conductivity of the amorphous carbon film is further enhanced through the heat effect, and reflection on the high-power microwaves is improved; and when the high-power microwave stops irradiation, the conductivity of the amorphous carbon film disappears, and the skin antenna recovers to work normally. Compared with the prior art, the scheme is simple and free of frequency dependence, high-power microwave signals of any incident frequency can be shielded, extra loss is not introduced into a system link, and the method has great value in the field of high-power microwave protection.

The invention relates to a lubricant guide housing (32) for being arranged in the region of a hydrodynamic torque converter, comprising a radially extending first section (33) which is arranged for axially opposite positioning to one end face (35) of the torque converter (9) in the installed state of the lubricant guide housing (32). The first section (33) transitions radially outwardly into an axially extending second section (34) which is configured for axially at least partially and radially outwardly surrounding the torque converter (9) starting from the first section (33) in the installed state of the lubricant guide housing (32). In order to realize a lubricant guide housing by means of which an excessive accumulation of lubricant in the region of the hydrodynamic torque converter can be reliably prevented, both the first section (33) and the second section (34) are configured to be completely annular.

The application relates to a B-grade high-flame-retardant shielding network line manufacturing equipment, which comprises a rack, a first wire combining mechanism, a second wire combining mechanism, an injection mechanism and a winding mechanism arranged on the rack in sequence along a production direction, the first wire combining mechanism is used for assembling and manufacturing between a first shielding layer and a plurality of second wire cores and a first wire core, the second wire combining mechanism is used for assembling and manufacturing between a second shielding layer and a third wire core and a second wire core, the first wire combining mechanism is used for assembling and manufacturing between a third shielding layer, a reinforcing rib and a protective layer and a third wire core, and the B-grade high-flame-retardant shielding network line is formed, and the winding mechanism is used for winding the formed B-grade high-flame-retardant shielding network line into a bundle. The application solves the problem that the existing multi-layer structure needs more processes, and when automatic one-time production and manufacturing are carried out, more production equipment leads to the problem of reduced production efficiency.

The application discloses a kind of based on network type VSC current limiting strategy's transient stability control and analysis method, its steps include:1, in voltage control loop using anti-integrator saturation module;2, introduce current saturation angle and determine its optimum value;3, based on the introduction current saturation angle to improve VSC current limiting module;4, based on current limiting module and current saturation angle, using phase diagram to analyze system transient stability.The application introduces current saturation angle to carry out transient stability control, can effectively promote the transient stability of the system formed by network type VSC and infinite grid, and the transient stability of network type VSC is qualitatively analyzed by phase diagram.

The utility model discloses a copper shield and transformer structure for a transformer partial discharge test, which comprises a copper plate piece, the copper plate piece is integrally bent to form a cylindrical structure, and the cylindrical copper plate piece is provided with a first edge, a second edge, a third edge and a fourth edge. The first edge and the second edge are parallel to the axis of the cylindrical copper plate piece, the first edge and the second edge are not in contact, the third edge and the fourth edge are arc edges at the two ends of the cylindrical copper plate piece correspondingly, transition parts are arranged on the third edge and the fourth edge correspondingly, and the transition parts are arranged at the two ends of the cylindrical copper plate piece correspondingly. The copper plate piece and the transition part are wrapped with insulating layers. The shielding sleeve is sleeved between a low-voltage coil and a high-voltage coil of a transformer, so that shielding between the low-voltage coil and the high-voltage coil is realized, transmission of partial discharge interference signals on a low-voltage side to a high-voltage side is reduced, background partial discharge quantity is reduced, and test accuracy is improved.

The application discloses a shielded RJ45 connector and an assembling equipment thereof, and belongs to the field of connectors. The connector comprises a first shield and a second shield, a first shield is arranged between any two adjacent terminal assemblies, the first shield is used for shielding the terminal assemblies adjacent in the horizontal direction, a second shield is arranged between the two terminal assemblies in each pair, the second shield is used for shielding the terminal assemblies adjacent in the vertical direction, the shield between the adjacent terminals is realized, the crosstalk between the terminals is reduced, and the transmission stability of the connector is ensured. In the assembling equipment, two mechanical hands are used for clamping the insulating seat and the shield shell, a pressing plate is used for positioning the bent part by pressing, a bending assembly is used for pre-bending to determine the bending position, and the bending position is bent twice, so that the accuracy and consistency of the bending are effectively ensured, and the machining precision and assembling precision of the shield shell are improved.

The invention discloses a method for realizing network equipment automation based on compilation, which is applied to the network automation operation and maintenance of a data center, and comprises a user-defined extensible syntax tree: the syntax tree designed according to the command structure of the network equipment can be flexibly expanded according to actual needs, so as to reduce the development amount and standardize the development content; at the same time, the syntax tree defines the attribute specification of each atomic statement, including prompt, error reporting, pre-input detection, post-input detection and other standard contents, so that the atomic statement can have idempotence; the syntax tree consists of two parts: the invention is constructed based on the SSH, Telnet and other protocols of the network equipment, and an independent script syntax is constructed through the syntax tree, so as to realize; the invention supports that devices of different manufacturers and versions can use the same script to issue after command atomic encapsulation, thereby eliminating the manpower of writing different scripts for different devices and issuing them in batches through different tasks, realizing manufacturer shielding, and can carry out self-development and enrichment of atomic operation contents.

The invention relates to the technical field of lithium metal batteries, in particular to an in-situ gel polymer electrolyte based on a high-dipole-moment monomer and a preparation method and application of the in-situ gel polymer electrolyte. The preparation method comprises the following steps: S1, selecting and processing a high dipole moment monomer; s2, preparing an electrolyte precursor solution; s3, using an electrolyte additive; s4, determining the molar ratio of the monomer to the cross-linking agent; s5, carrying out in-situ polymerization reaction; and S6, battery assembly and polymerization reaction. The in-situ gel polymer electrolyte based on the high-dipole-moment monomer is successfully prepared, and the electrolyte improves the interface stability and the electrochemical performance of a lithium metal battery; and the material also has the advantages of relatively wide electrochemical window, high ionic conductivity and lithium ion transference number, good cycling stability, easiness in preparation, cost effectiveness and the like. Due to the characteristics, the electrolyte system has important application value and market potential in the field of lithium metal batteries.

The utility model relates to the technical field of highway sound insulation, and discloses a combined sound barrier for traffic engineering, which comprises two fixing plates, the tops of the two fixing plates are provided with grooves I, the interiors of the two grooves I are fixedly connected with H-shaped plates I, and a shell is slidably connected between the two adjacent H-shaped plates I; a plurality of long holes are formed in the front sides of the two outer shells, sound absorption cotton is fixedly connected to the interiors of the two outer shells, the tops of the U-shaped plates are arranged at the bottoms of the outer shells, and the tops of the long blocks are in threaded connection with lead screws. According to the sound insulation equipment, rapid combination is achieved, sound absorption cotton is used for filtering, sound shielding is achieved, a servo motor is started to be matched with rotation of a lead screw to drive a U-shaped plate to ascend and descend, and the installation height of the sound insulation equipment can be adjusted so as to meet the installation requirements of different environments.

The present application relates to a kind of vehicle SIM card real-name authentication system and method, belong to automobile technical field, the system includes: receiving module is used to obtain the VIN code and vehicle information of vehicle from real-name authentication request;Query module is used to determine the target host factory corresponding to vehicle SIM card;Encapsulation module is used to encapsulate the identity information of car owner, the VIN code and ICCID of vehicle as authentication request data packet, and authentication request data packet is forwarded to the real-name authentication platform of target host factory by network routing module;State management module is used to obtain the binding operation result returned by real-name authentication platform, and based on binding operation result triggers the channel mode of corresponding vehicle SIM card;Storage module is used to store the vehicle-card binding relationship and full life cycle change record formed after each real-name operation.The system realizes the full-process automation unified management of vehicle SIM card real-name authentication in the environment of multiple host factories by the synergistic cooperation of the above module.

A needle puncture prevention device with a limiting spring and a stopper comprises: a catheter seat assembly, the rear end of which is provided with an anti-slip structure; a needle shield, which is provided with a needle through hole, a slide groove, a first positioning groove, and a slot; a stopper, which is slidably installed in the slide groove, one side of which cooperates with the needle tube, and the other side cooperates with the anti-slip structure and the limiting spring; the limiting spring is installed in the first positioning groove and the slot, and a stop hole is provided on it; a needle seat, which covers the rear part of the needle shield; the needle tube passes through the catheter seat assembly, the needle shield, and the limiting spring, and provides support for the stopper, and the rear end of the needle seat is fixed in the needle seat, and a protruding buckle is provided near the front end. Pull the needle seat backward to make the needle seat drive the needle tube to retreat, and when the needle tube retreats to the point where the protruding buckle is blocked by the stop hole of the limiting spring, the front end of the needle tube retreats away from the stopper, and the stopper slides into the slide groove of the needle shield under the action of the limiting spring, thereby blocking the front end of the needle tube, and the needle tip is shielded in the needle shield, thereby improving the safety of the product.

The invention discloses a manufacturing method of a multi-layer microwave circuit board with blind groove side wall local metal edge covering, and belongs to the technical field of multi-layer microwave circuit boards. Comprising the following steps: manufacturing an upper daughter board for forming a blind groove; a blind groove and a blind hole are pre-formed in the upper daughter board; local metal edge covering manufacturing is carried out on the side wall of the blind groove of the upper daughter board; carrying out pre-gold-plating treatment on the metal covered edge of the side wall of the blind groove of the upper sub-board; and pressing the main board, and forming through holes according to requirements after the main board is pressed. According to the method, the problem that a special structure of the multilayer microwave plate cannot be realized is solved, the multilayer microwave plate manufactured by the manufacturing method can realize shielding of microwave signals and has a good grounding effect, the process realizability is good, and reliable process implementation of a brand new circuit board with a special structure is realized.

The present invention discloses a WiFi signal shielding fence, comprising at least one fence body, wherein the fence body comprises a substrate and a first isolation fence and a second isolation fence respectively attached to a first surface and a second surface of the substrate, wherein the first isolation fence and the second isolation fence both comprise a plurality of metal bars distributed in an array and a plurality of resistive loads connected in series between adjacent metal bars; the projections of the metal bars of the first isolation fence and the metal bars of the second isolation fence in the thickness direction of the substrate are perpendicular to each other; the entire process decomposes the WiFi signal into parallel components and perpendicular components, utilizes the cross-polarization isolation characteristics of the mutually perpendicular metal bars on both sides of the substrate, absorbs and weakens the WiFi signal, so as to achieve the purpose of shielding, the structure is simple, the use is convenient, and the fence has strong practicality.

According to the data copper cable with the special structure, the shielding layer is sleeved on the periphery of the stranded cable core, the inner protection layer is arranged on the periphery of the shielding layer, the stranded cable core is protected, meanwhile, interference signals are shielded, the armor layer is arranged on the periphery of the inner protection layer, and the shielding layer is arranged on the periphery of the armor layer. The armor layer is an armor tube which is spirally arranged on the periphery of the inner protection layer in a surrounding manner, and an outer protection layer is further arranged on the periphery of the armor layer; the armor layer is excellent in flexibility and excellent in compression resistance, and can ensure that the data copper cable has good compression resistance, so that the data copper cable can adapt to harsh environments such as outdoor environments and the like.