44results about How to "Realize shielding function" patented technology

The invention discloses a high voltage belt shielding power socket. The high voltage belt shielding power socket comprises contact pin fixing covers, shielding cases, contact pin assemblies and a socket shell, wherein a flange plate is arranged at one end of the socket shell; installation via holes are formed in the flange plate; the two opposite sides of the socket shell are each provided with a hollow cylindrical rotary shaft; two shielding installation cylinders are arranged in the socket shell; hexagonal rotation stopping contact pin installation holes are formed in the bottom of the plugging portions of the shielding installation cylinders, the bottoms of the hexagonal rotation stopping contact pin installation holes are connected with cylindrical contact pin positioning devices, and hanging tables are arranged on the outer walls of the cylindrical contact pin positioning devices. The parts complex in structure are formed by a mould, and compared with a traditional socket, the high voltage belt shielding power socket has the advantages of being small in size, good in shielding performance, low in production cost, high in production efficiency, and the like.

The invention discloses a reactor shielding, coolant pressure relief and containment suppression compound device. The reactor shielding, coolant pressure relief and containment suppression compound device comprises a ring-shaped shielding layer which is arranged in a containment, surrounds a pressure vessel and adopts a closed structure, the housing of the ring-shaped shielding layer comprises shielding steel plates, and the ring-shaped shielding layer accommodates shielding water and is provided with a suppression pipeline used for communication between the atmosphere of the containment and the shielding water, and the ring-shaped shielding layer is also provided with a pressure relief pipeline used for leading a coolant in the pressure vessel into the shielding water and a water drainage pipe used for discharging water into a reactor cavity. The reactor shielding, coolant pressure relief and containment suppression compound device can achieve the functions of reactor shielding, coolant pressure relief, containment suppression and water discharge into the reactor cavity.

The invention discloses a biological endogenous magnetic particle detection device. A gradient receiving coil (6) is connected with an input coil of a low-temperature DC superconducting quantum interference device (2); the low-temperature DC superconducting quantum interference device (2) is connected with a preamplifier (4); and the low-temperature DC superconducting quantum interference device (2), the gradient receiving coil (6) and a low-temperature data wire (5) are packaged in a low-temperature non-magnetic Dewar (1). When DC passes through a magnetization and demagnetization unit (3), a static magnetic field is generated to magnetize a biological sample; and when AC passes through the magnetization and demagnetization unit (3), an AC magnetic field is generated to demagnetize the biological sample. A mobile platform and a magnetization and demagnetization unit controller (10) complete control signal acquisition and feedback control of the magnetization and demagnetization unit (3) and the mobile platform (8). The low-temperature non-magnetic Dewar (1), the magnetization and demagnetization unit (3), the magnetic nanoparticle-containing biological sample (7), the mobile platform (8) and a non-magnetic sample holder (9) are arranged in a magnetically shielded room (13).

The invention discloses a method and a device for shielding wireless signals. The method comprises: a first network device sending a reselection signaling to a terminal of a second network device which accesses a public network in a to-be-shielded region, wherein the reselection signaling is used to indicate the terminal to reselect to access the first network device and the first network device is used to shield wireless signals between the second network device and the terminal; the first network device receiving upstream signals sent by the terminal, if the terminal supports a first communication system according to the upstream signals is determined, send a first access instruction to the terminal, the first access instruction being used to indicate that the terminal is accessed into the cell which supports the first communication system in the first network device. The method is used to solve problems that a conventional interference method is high in radiation.

The invention provides a storage device and a data reading-writing method thereof. The storage device at least comprises a phase change memory chip, a phase change memory interface control module, an SD (secure digital) interface control module and a storage controller. The phase change memory interface control module is coupled to the phase change memory chip. The SD interface control module is coupled to an external device. The storage controller is coupled to the phase change memory interface control module and the SD interface control module. The storage controller is used for responding to a data reading or writing command from the SD interface control module and controlling reading or writing of the phase change memory chip through the phase change memory interface control module. The storage device is an SD card based on a phase change memory; the phase change memory chip is used as a storage medium allowing random reading and writing. Additionally, compared with flashes, the storage device and the data reading-writing method thereof have the advantages that operations such as bad block management and ECC (error checking and correcting) are simpler, a function of shielding bad blocks is achieved, and fatigue is resisted.

The invention discloses a lifting folding platform protection device suitable for various vehicle models, which is characterized by comprising lifting folding platform doors (6), stand columns (4) andan end door (2), wherein the plurality of lifting folding platform doors and the stand columns are sequentially and alternately arranged in the longitudinal direction of the rail to form longitudinalplatform doors, and the transverse end doors are arranged at the two ends of each longitudinal platform door; the widths of all the lifting folding platform doors are equal, and the sum of the widthsof all the lifting folding platform doors accounts for 80% or above of the total length of the longitudinal platform doors; and the lifting folding platform door comprises a plurality of shielding folding pieces (6-1) which are sequentially hinged up and down, and the two ends of each shielding folding piece (6-1) can slide up and down on the stand columns on the two sides. Fixed doors and sliding doors of traditional platform doors are replaced by folding and unfolding the lifting folding platform doors up and down, and the shielding function of the platform door is achieved. On the premisethat the platform door device is arranged without retreating to reduce the width of the platform, the platform protection device can adapt to various railway vehicle types through linkage of the control system.

The invention provides a display panel and a display device. The display panel comprises a flexible substrate, the flexible substrate comprises a display unit and a bending unit which is connected with the display unit and can be bent to the back face of the display unit. The bending unit comprises a multiplexer, a chip and a flexible circuit board which are sequentially arranged in the downward direction away from the bending position. The flexible circuit board comprises a grounding end capable of providing a grounding signal, the surface, away from the flexible substrate, of the multiplexeris provided with a metal shielding layer and an insulating layer which is arranged between the metal shielding layer and the multiplexer and used for insulation and isolation, and the metal shieldinglayer is connected with the grounding end to shield signal interference. According to the display panel and the display device provided by the invention, electromagnetic signal interference can be shielded, the use performance is improved, and the wave-absorbing material is reduced or not coated, so that the cost is reduced.

The invention belongs to the technical field of electrical equipment and particularly relates to a PCB (printed circuit board) signal unit shield grounding device. The PCB signal unit shield groundingdevice comprises a shielding case used for shielding PCB signal units, connecting pieces are arranged on the outer side of the shielding case, and after the PCB signal units are shielded by the shielding case, the connecting pieces contact with the inner wall of a cabinet shell provided with a PCB. The shielding case used for shielding the PCB signal units is arranged, the connecting pieces are arranged on the shielding case, and the PCB signal units are shielded and grounded, so that problems that PCB signal units are grounded badly leading to mutual interference in the prior art are solved,the PCB signal units are assuredly well grounded, good shielding effect is achieved, normal use of the PCB signal units and the PCB is guaranteed, and good use functions are achieved.

A circuit board and an electronic device relate to but are not limited to the technical field of circuit boards, the circuit board comprises a first circuit board, the first circuit board comprises a first substrate and a first circuit layer arranged on a first side surface of the first substrate, and the first circuit layer comprises a first grounding circuit. The circuit board further comprises a first protection layer and a first electromagnetic interference shielding layer which are sequentially stacked at the side, away from the first substrate, of the first circuit layer. The first protection layer is provided with a first opening, the first opening exposes at least one part of the first grounding line and is filled with a first conductive material, and the height difference between the surface of the first conductive material and the surface, away from the first substrate, of the first protection layer is 0-2 microns. The first conductive material connects the first electromagnetic interference shielding layer and the first ground line. The circuit board provided by the embodiment of the invention can prevent the problems of local upwarp and unevenness after the circuit board is partially windowed to expose the circuit layer.

The invention relates to an electromagnetic shielding structure of a rectangular electric connector. The structure comprises a connector plug shell body, a socket shell body and a screw rod locking mechanism, wherein a sealing gasket is disposed on the screw rod locking mechanism; an elastic conductive ring is disposed between the connector plug shell body and the socket shell body; a cable shielding net is installed on the sealing gasket; and a screw is connected to the sealing gasket. The structure provided by the invention has the advantages that a cable shielding layer is installed on the sealing gasket by the screw, so that the cable shielding layer does not need to pass through a wire outlet of the connector, and the cable shielding layer can be electrically connected to a plug; reliability of rainproof sealing of the cable wire outlet is enhanced; assembly is convenient because of setting of the elastic conductive ring; the structure is stable and reliable after installation; the plug can be electrically connected to a socket; shielding performance of the connector is enhanced; an overall structure of the elastic conductive ring and the cable shielding net is simple; practicability is high; a shielding function of the connector is effectively implemented; and resistance of the connector to electromagnetic interference is enhanced.

The invention discloses a shield structure that comprises the first shell and the second shell, said first shell possesses airways to form several aeration areas, assembly parts are set on edge of the first shell and the second shell outside of non aeration area, said assembly parts join the first shell and the second shell. The invention also disclose a communication shield equipment that comprises shield structure equipped on communication equipment, said shield structure includes the first shell and the second shell, said first shell possesses airways to form several aeration areas, assembly parts are set on edge of the first shell and the second shell outside of non aeration area, said assembly parts join the first shell and the second shell. With the invention, airways can not be warded, so radiating performance can be increased.

The invention provides a vehicle-mounted high-definition camera which enables a shielding waterproof structure to be simple and is stable and reliable in shielding and waterproofing. Electroplating layers are arranged on the inner walls of a front shell and a rear shell respectively, assembly spigots of the front shell and the rear shell are assembled and then welded to form an integral installation cavity, a forward-protruding lens is positioned and arranged in a center hole in the front end of the front shell, a first circuit board is fixedly installed in the installation cavity of the frontshell through first screws, the first circuit board and the front shell are in contact conduction, a second circuit board is fixedly installed in the installation cavity of the rear shell through second screws, the second circuit board and the rear shell form contact conduction, a connector is arranged between the first circuit board and the second circuit board and used for connecting the firstcircuit board and the second circuit board, a convex connector is fixedly arranged on the second circuit board, a connecting hole is formed in the position, corresponding to the convex connector, of the rear shell, and an inward-extending connecting sleeve of the connector extends into the connecting hole and is connected with the corresponding interface end of the convex connector in a buckled mode.

The invention discloses a radio frequency front-end assembly, which comprises a radio frequency assembly, the radio frequency assembly comprises at least one mounting frame with a groove, and each mounting frame is internally provided with at least one core power division network substrate; at least one radiation unit is arranged on the front surface of the core power division network substrate, a circuit is arranged on the back surface of the core power division network substrate, and at least one through hole is formed in the core power division network substrate; the pins of the radiation unit pass through the through holes of the core power division network substrate and are connected with the circuit on the back surface of the core power division network substrate. And a signal leading-out end is arranged in the through hole of the core power division network substrate, and the signal leading-out end passes through the mounting frame to transmit a signal to the signal processing unit at the rear section. According to the radio frequency front-end assembly, the interference of external signals on a system is greatly reduced while the transmission loss is greatly reduced, so that the working efficiency of the assembly is greatly improved, and the radio frequency front-end assembly plays a significant role in improving the sensitivity of the system and saving the energy consumption of the whole system.

The invention discloses an MCU (micro control unit) bus socket with a shielding function. The MCU bus socket comprises a pin mounting plate, a shielding cover and a plastic socket shell. The shielding cover is positioned between the socket shell and the pin mounting plate and covers the pin mounting plate. The socket shell, the shielding cover and the pin mounting plate are in mutual fastening connection. Contact-preventing walls, pin components and a sheath are arranged in the pin mounting plate. A signal hole for signal communication is formed in the sheath. Compared with existing sockets, the MCU bus socket has the advantages that a metal shell serving as a mounting and support piece is not needed, and thus, the size of the socket can be decreased; part types for the socket can be reduced; good shielding communication between the shielding cover and a mounting faceplate and high shielding effectiveness of the socket can be guaranteed; the MCU bus socket has a contact-preventing function, and production cost is reduced.

The invention discloses a wave-absorbing shielding adhesive film and a preparation method thereof, the wave-absorbing shielding adhesive film comprises an adhesive film layer, a wave-absorbing layer,a conductive metal layer and an anti-static shading layer which are arranged in sequence, the wave-absorbing layer is made of a soft magnetic alloy material, and the anti-static shading layer is madeof conductive ink or polyimide; the preparation method comprises the following steps: taking a conductive metal layer as a substrate, coating one surface of the conductive metal layer with an anti-static shading layer, and then performing drying; coating the other surface of the conductive metal layer with a soft magnetic alloy material, and performing multi-roller hot pressing and curing to obtain an absorption layer; and coating pressure-sensitive glue on the absorption layer, and drying, curing and forming a film to obtain an adhesive film layer. Effective shielding can be achieved under the ultra-thin thickness, and therefore electromagnetic wave interference resistance and electronic noise suppression are achieved.

The present invention discloses a smart incoming call shielding method and apparatus of a mobile terminal. The smart incoming call shielding method comprises a first step of scanning an incoming call record every scanning time period, and extracting suspicious phone numbers and phone number information; a second step of searching whether a pre-storage list has phone numbers identical with the suspicious phone numbers, if yes, marking the suspicious phone numbers as shielded phone numbers or tracked phone numbers according to list attributes, and if not, performing a third step; the third step of determining attributes of the suspicious phone numbers according to the phone number information, marking the suspicious phone numbers as the shield phone numbers or tracked phone numbers, and sending the suspicious phone numbers to corresponding lists to be stored; and a fourth step of when an incoming call comes, determining whether the phone number of the incoming call is the shielded phone number, if yes, shielding the phone number of the incoming call. In the method, the suspicious phone numbers are classified and selectively shielded according to the list and the phone number information, so that a user condition-based shielding function is realized, and misunderstanding rate of useless calls is lowered. The existing mobile terminal cannot automatically shield prank calls or calls that the user does not want to answer. The method solves the problem of the existing mobile terminal.

The invention discloses a manufacturing method of an electromagnetic shielding material, the electromagnetic shielding material prepared by the manufacturing method and an electronic product applyingthe electromagnetic shielding material. The manufacturing method of the electromagnetic shielding material comprises the following steps: a polymer film layer is provided, and the thickness of the polymer film layer is larger than or equal to 1.5 micrometers and smaller than or equal to 6 micrometers; the polymer film layer is punched, so that a plurality of through holes are formed in the polymerfilm layer, the hole diameter of the through holes ranges from 0.1 micrometer to 100 micrometers, and the hole distance ranges from 0.1 micrometer to 100 micrometers; roughening the polymer film layer to enable the dyne value of the polymer film layer to be greater than or equal to 44 and less than or equal to 70; vapor deposition is carried out on the two roughened surfaces respectively, and atleast one metal shielding layer is formed on each surface and the hole walls of the through holes respectively; according to the technical scheme, the electromagnetic shielding material with the two-sided conduction function is very thin and good in flexibility.

The invention relates to a connector, in particular a circular connector, having a plug side and a cable connection side, comprising: an electrically conductive terminal which is divided by an electrically conductive terminal flange into a first interface side and a second interface side, the second interface side being used for connection to a cable; an insulating insert which is used for fixing the electrically conductive terminal; and a shell which is used for accommodating the insulating insert and the electrically conductive terminal. The invention further provides a connector assembly which comprises the connector and a butt joint connector. The connector and the connector assembly can be used for transmitting large current, can be quickly locked and separated, can achieve a good EMC effect, and are convenient to assemble and disassemble.

The invention relates to a connector, in particular a circular connector, having a plug side and a cable connection side, comprising: a conductive terminal which is divided by a flange into a first interface side and a second interface side, the second interface side being used for connection to a cable; the insulating insert which is used for fixing the conductive terminal; and a shell which is used for accommodating the insulating insert and the conductive terminal. The invention further designs a connector assembly which comprises the connector and a butting connector. The connector can be used for transmitting large current, can be quickly locked and separated, and can achieve a good EMC effect.

The invention relates to a shielding reed and a rectangular connector with the shielding reed. The connector is composed of a shielding reed body and an elastic part; the shielding reed body is a rectangular ring piece and is divided into a long edge part and a short edge part, and the surface of the shielding reed body is provided with a plurality of arch-shaped protruding elastic parts which are closely arranged in the same direction. The effective conductive connectivity of the shell and the panel of the connector plug connected with the shielding reed is ensured by utilizing the elastic contact connection and the circumferential uniform and tight arrangement of the elastic part of the shielding reed; even if the plug and the socket of the connector are not plugged in an aligned manner or are plugged in a fatigue overload manner, the local elastic connection of another shielding reed in the circumferential direction of the inner side of the shell of the plug of the connector and the outer side of the socket of the connector is invalid. The axial arrangement of the shielding reeds can make up or replace effective conductive continuity between the connector plug shell and the panel, and the overall shielding function of an overall wire harness system of a shielding cable connected with the connector plug and the connector socket is achieved.

The invention discloses a high-temperature-resistant and fire-resistant flexible cable and a manufacturing method thereof, belonging to the technical field of high-temperature and fire-resistant flexible cables. Line clamping component, a dry powder storage ring is installed along the ring of the cable body between the T-shaped fixing bases, and a dry powder detection and ejection component is arranged on the inner side of the dry powder storage ring. The cable body includes a quartz fiber braided outer protective layer and a ceramic fiber wrapping tape. Protective layer, ceramized silicone rubber oxygen barrier, quartz fiber rope, ceramized silicone rubber insulating layer, synthetic mica tape wrapping the inner insulating layer and soft copper wire stranded conductor, the inner side of the quartz fiber braided outer protective layer is sheathed with ceramic Fiber-wrapped protective layer.

The present invention relates to the technical field of high-voltage switch devices, and particularly relates to a support conductor and a high-voltage switch using the conductor. The support conductor includes a recessed opening. The recessed opening includes a bottom surface used for fixing a static contact and used for conductively contacting with the static contact, and a side wall used for shielding the static contact. The support conductor of the present invention is provided with the recessed opening allowing the static contact to sink into, the bottom surface of the recessed opening is in conductive contact with the static contact, the side wall of the recessed opening can shield the static contact, and an extra shielding structure is not needed. In addition, after the static contact is installed, the height is lowered, so that the diameter of a switch cylinder is effectively reduced. Due to the compact structure design of the support conductor, product assembling difficulty is lowered, the production cycle is shortened, and the product structure is optimized, further, a good electric field structure is obtained, and the electrical property of the product is improved.

The invention discloses a manufacturing method of an electromagnetic shielding material, the electromagnetic shielding material prepared by the manufacturing method and an electronic product applyingthe electromagnetic shielding material. The manufacturing method of the electromagnetic shielding material comprises the following steps: providing a polymer film layer of which two sides are conducted, wherein the thickness of the polymer film layer is greater than or equal to 0.8 micron and less than or equal to 12 microns; roughening the polymer film layer to enable the dyne value of the polymer film layer to be greater than or equal to 44 and less than or equal to 70; performing vapor deposition on the two roughened surfaces, forming at least one metal shielding layer on each surface, andperforming the metal shielding layers on the two surfaces through the polymer film layer; according to the technical scheme, the electromagnetic shielding material which is very thin and is conductedon two sides is provided.

The invention belongs to the technical field of electrical equipment and particularly relates to a PCB (printed circuit board) signal unit shield grounding device. The PCB signal unit shield groundingdevice comprises a shielding case used for shielding PCB signal units, connecting pieces are arranged on the outer side of the shielding case, and after the PCB signal units are shielded by the shielding case, the connecting pieces contact with the inner wall of a cabinet shell provided with a PCB. The shielding case used for shielding the PCB signal units is arranged, the connecting pieces are arranged on the shielding case, and the PCB signal units are shielded and grounded, so that problems that PCB signal units are grounded badly leading to mutual interference in the prior art are solved,the PCB signal units are assuredly well grounded, good shielding effect is achieved, normal use of the PCB signal units and the PCB is guaranteed, and good use functions are achieved.

The invention discloses a shielding insulating body, a shielding connector and a manufacturing method for the shielding connector. The insulating body is ejection-molded, and comprises a top surface, a bottom surface and a plurality of through holes, wherein the top surface and the bottom surface are opposite to each other; and the plurality of through holes penetrate through the top surface and the bottom surface. A metal material layer is arranged from the bottom surface to the top surface, and covers the bottom surface and the wall surfaces of the through holes; an insulating material layer is arranged from the top surface to the bottom surface, and covers the top surface and the wall surfaces of the through holes; and the metal material layer in the through holes is covered by the insulating material layer to realize the shielding function of the electrical connector and prevent terminals inserted into the through holes from being short-circuited with the metal material layer. Positioning structures are not required to be arranged on the bottom surface of the insulating body to partially shield the metal material layer together with stoppers; therefore, compared with the prior art, the invention solves the problem of difficulty in control over dimensional accuracy, and can eliminate the two steps of assembling the stoppers and removing the stoppers to further simplify a machining process and decrease production cost.

The invention discloses a shielding enhanced waveguide ventilation window, and belongs to the technical field of electromagnetic compatibility shielding. The waveguide ventilation window comprises oneor more waveguide shielding layers, a shielding plate serves as a body of each waveguide shielding layer, and multiple cut-off waveguide ventilation holes are formed in each shielding plate; and an included angle is formed between the axis of each cut-off waveguide vent hole and the surface of the corresponding shielding plate. In addition, a dustproof net or a sealing cover can be additionally arranged, so that the waveguide window has dustproof and sealing functions. The shielding enhanced waveguide ventilation window is especially suitable for a shielding body which has limited waveguide window thickness, is quite harsh in use environment and requires dust prevention and rain prevention.

The present application discloses a wireless signal shielding method and device. The method includes: a first network device sending reselection signaling to a terminal of a second network device that accesses the public network in the area to be shielded, wherein the reselection The signaling is used to instruct the terminal to reselect to access the first network device, and the first network device is used to shield the wireless signal between the second network device and the terminal; the first network The device receives an uplink signal sent by the terminal, and if it is determined based on the uplink signal that the terminal supports the first communication standard, then sends a first access instruction to the terminal, where the first access instruction is used to instruct the The terminal accesses a cell of the first network device that supports the first communication standard. This method is used to solve the problem of large radiation that exists in traditional interference methods.

The invention discloses a two-section type HDMI connector and a manufacturing method thereof. The shielding shell of the two-section type HDMI connector is composed of a shell front end part and a shell rear cover part. The shell front end part is provided with a spacing bulge, a first strip-shaped bulge and a first cambered-surface bulge. The rear end of the shell rear cover part is provided with a cylindrical extension segment. The surface of the shell rear cover part is provided with a second strip-shaped bulge and a second cambered-surface bulge. The shell front end part and the shell rear cover part are integrally molded through the stamping process of complete metal sheets. In this way, the generation of slits is effectively reduced and the shielding function is better achieved. The connection part of the shell front end part is embedded in the front interface part of the shell rear cover part, and the connection part is connected with the front interface part via a buckle connection structure. Therefore, the assembly is simple in operation and the connection is steady in effect. After the shell front end part and the shell rear cover part are connected together, the surfaces of the two parts, except that with a plug-in tongue part, are coated with a copper foil or a tin foil. Since the shell is coated, the shielding effect is further improved. Meanwhile, the leakage of electromagnetic waves is avoided and the resistance of the two-section type HDMI connector to the interference of external signals is improved.

The invention discloses an electromagnetic interference (EMI) shielding film, a circuit board and a preparation method of the EMI shielding film. The EMI shielding film comprises a first shielding layer, a bonding layer, a second shielding layer, a third shielding layer and an adhesive film layer, wherein the first shielding layer, the bonding layer and the second shielding layer are arranged sequentially in a stacked mode; bulges are arranged on the side, away from the bonding layer, of the second shielding layer; the third shielding layer is arranged on the side, provided with the bulges, ofthe second shielding layer, and protruding parts are formed at positions, covering the bulges, of the third shielding layer; and the adhesive film layer is arranged on the side, away from the secondshielding layer, of the third shielding layer in a covering mode. According to the EMI shielding film, the protruding parts extend into the adhesive film layer, so that when the protruding parts are press-fitted, it is guaranteed that the third shielding layer smoothly pierces through the adhesive film layer to make contact with a ground layer of the circuit board; and then, it is guaranteed thatinterference charges are normally led out under cooperation of the first shielding layer, the bonding layer, the second shielding layer and the third shielding layer, and a shielding function is achieved.

The present invention discloses a smart incoming call shielding method and apparatus of a mobile terminal. The smart incoming call shielding method comprises a first step of scanning an incoming call record every scanning time period, and extracting suspicious phone numbers and phone number information; a second step of searching whether a pre-storage list has phone numbers identical with the suspicious phone numbers, if yes, marking the suspicious phone numbers as shielded phone numbers or tracked phone numbers according to list attributes, and if not, performing a third step; the third step of determining attributes of the suspicious phone numbers according to the phone number information, marking the suspicious phone numbers as the shield phone numbers or tracked phone numbers, and sending the suspicious phone numbers to corresponding lists to be stored; and a fourth step of when an incoming call comes, determining whether the phone number of the incoming call is the shielded phone number, if yes, shielding the phone number of the incoming call. In the method, the suspicious phone numbers are classified and selectively shielded according to the list and the phone number information, so that a user condition-based shielding function is realized, and misunderstanding rate of useless calls is lowered. The existing mobile terminal cannot automatically shield prank calls or calls that the user does not want to answer. The method solves the problem of the existing mobile terminal.