247results about How to "Play the role of isolation" patented technology

The invention discloses a large-capacity battery converter and control method thereof. The converter of the invention comprises several branch single stage type DC / AC converter modules parallel to one another. Each battery cluster (Battery Cluster BC) converges energy to an AC bus via each branch single stage type DC / AC converter module to be transformed in voltage in order to connect to an AC grid or to operate independently with load. The invention solves the circular current and uniform current problems brought by serial and parallel connection of the battery cluster, and adopts the technology of module combination and alternate balance to effectively improve the system efficiency under low power and power quality at the AC and DC sides and to realize balanced use of the battery cluster. Each battery branch can conduct intelligent charge and discharge management and the control function and the protection function are configured independently to ensure the largest availability of the system. The invention has simple structure, small volume, small energy loss, easy modularization, high reliability, small output harmonic wave, good system expansibility and low requirement to insulating ability of the converter and can operate with reduced capacity when the unit is in failure. The control method of the large-capacity battery converter of the invention is convenient and simple in operation and easy in realization.

The invention discloses asphalt self-adhesive. The asphalt self-adhesive comprises the following components in percentage by weight: 45 to 65 percent of asphalt, 16 to 25 percent of rubber oil, 5 to 15 percent of styrene butadiene styrene (SBS), 1 to 6 percent of styrene butadiene rubber (SBR), 1 to 6 percent of petroleum resin, 1 to 7 percent of ethylene vinyl acetate (EVA), and 10 to 20 percent of talcpowder. The invention also provides a high-polymer self-adhesion rubber waterproof coiled material which comprises a non-woven fabric coating, a high-polymer sheet coating, and an asphalt self-adhesive coating which consists of the asphalt self-adhesive from bottom to top. Two ends of the waterproof coiled material are provided with joint sides. The asphalt self-adhesive contains EVA, so the compatibility of the self-adhesive and a high-polymer sheet is improved, and compounding intensity of the high-polymer sheet coating is improved. The problem that the high-polymer sheets cannot be jointed reliably in a self-adhesion joint process is solved, so the coiled materials are jointed by the adhesive; and the coiled materials can be adhered firmly and reliably, and adjusted freely and flexibly.

The present invention discloses a self-adhesive type chitosan hemostatic film, which is composed of components by weight percentage: 85-93% chitosan, 5-10% glycerin, 2-5% citric acid. The preparing steps includes: weighing chitosan, glycerin and citric acid, then adding chitosan into acetum with 1.5%-2% mass concentration, mixing to chitosan dissolved, adding glycerin and citric acid again, mixing to mixed solution; pouring said solution into glass mould and self-levelling, drying to form film, and cooling to room temperature; supporting the mould with film in closed container filling with absolute ethyl alcohol, and suffocating 2-3 hours, exposing film from mould. The film has no bacterium, and the self-adhesive surface absorbs moisture and forms gel instantly when contacts with blood or body fluid after is planted into body, the gel has adhesive and has effects of hemostasia and healing. Other side of the film has no adhesive and acts on isolation function with periphery.

The invention discloses a polarization-stable optical fiber laser cascade amplifier, which comprises a laser space isolator for preventing return seed laser from damaging a seed source, the laser space isolator is connected with a first polarizing beam splitter for splitting laser in different directions, the first polarizing beam splitter is connected with a first optical fiber collimator, the first optical fiber collimator is connected with a first combiner, the first combiner is connected with a first gain optical fiber for generating population inversion, the first gain optical fiber is connected with a second optical fiber collimator, the second optical fiber collimator is connected with a Faraday rotator mirror for rotating the laser polarization angle by 45 degrees, the Faraday rotator mirror is connected with a total-reflection mirror for returning incident light along the original path, the pumping input end of the first combiner is connected with a first pumping source, and one reflecting end of the first polarizing beam splitter servers as a polarization-maintaining pulse output end. The polarization-stable optical fiber laser cascade amplifier has the advantage that the polarization-stable optical fiber laser cascade amplifier can always keep the polarization state of amplified and outputted high-power laser stable in the process of amplification.

The invention discloses a rubber and metal framework bonding method, which is characterized by comprising six steps including preparation of rubber, cleaning of a metal framework, drying of the metalframework, covering of primer, covering of surface glue and vulcanization. Through the above method, bonding strength between rubber and the metal framework can be remarkably enhanced, and it is ensured that rubber has good processability.

The invention provides a silicon-based anode material of a lithium ion battery and a preparation method of the silicon-based anode material. The silicon-based anode material of the lithium ion battery is a silicon-metal-alloy three-layer composite adopting a core-shell structure, the core layer comprises silicon, the middle layer comprises the mixture of a silicon and metal X alloy compound and X, the outermost layer comprises pyrolytic carbon, and X is a metal element which is combined with silicon and has a stabile structure in the charging-discharging process. With the adoption of the technical scheme, the cycle performance and the rate capability of silicon powder serving as a lithium ion battery anode material are improved, and the core-shell structure effectively inhibits size expansion of the silicon powder in the charging-discharging process; with the adoption of the pyrolytic carbon, the conductivity of the composite is increased, size expansion of the silicon powder in the charging-discharging process is inhibited, the silicon-based composite has excellent cycle performance and rate capability, the preparation method is simple and low in cost, and raw materials are rich and easy to obtain.

The invention discloses a two-dimensional electrostatic scanning micromirror, which comprises an outer frame, an inner frame and a mirror surface. Outer frame isolation grooves are processed in the outer frame to divide the outer frame into an outer frame measuring part, an outer frame driving part and two outer frame connection parts; an outer feedback comb tooth group is arranged between the outer frame measuring part and the inner frame, an outer driving comb tooth group is arranged between the outer frame driving part and the inner frame, and mirror surface isolation grooves are processedin the mirror surface to divide the mirror surface into a mirror surface feedback part, a mirror surface driving part and a central part; and an inner feedback comb tooth groove is processed between the mirror surface feedback part and the inner frame, and an inner driving comb tooth group is arranged between the mirror surface driving part and the inner frame. The isolation groove of different structures are formed in the outer frame and mirror surface respectively to divide each of the outer frame and the mirror surface into different function parts, the inner and outer comb tooth groups areset as driving and feedback comb tooth groups respectively, deflection angles in two directions of the mirror surface are measured, and thus, reflected in real time, and the deflection angle of the mirror surface can be controlled more accurately.

The invention discloses a large-power direct-current relay. The relay comprises a housing body, a transmission assembly arranged in the housing body, a static spring and a moving spring. A static contact point is arranged on the static spring. A moving contact point is arranged on the moving spring. The output end of the transmission assembly is connected with the moving spring to push the movingcontact point on the moving spring to move towards the static contact point on the static spring. The relay also comprises a group of flexible anti-electric arc assemblies. The flexible anti-electricarc assemblies are arranged between the static contact point and the moving contact point, are in contact connection with the moving spring, and move towards the outside of two ends of the moving spring. When the moving contact and static contact are separated, the flexible anti-electric arc assemblies move to the place between the moving contact and the static contact, thereby achieving arc distinguishing and electric arc separation. According to the invention, the relay is simple in structure; distinguishing of electric arcs generated by the static contact and the moving contact of the relayis achieved; and service lifetime of the relay is prolonged.

The invention belongs to the technical field of anticorrosive coating, and in particular, relates to a metal substrate long-lasting anticorrosive inter-coat and a preparation method thereof, wherein the inter-coat is composed of a component A and a component B, and the component A is composed of the following raw materials in parts by weight: 50-60 parts of an epoxy-organosilicone resin modified acrylic resin emulsion, 12-18 parts of functionalized modified graphene, 10-20 parts of a filler, 8-15 parts of a cosolvent, 0.1-0.5 part of a defoamer, 0.5-1 part of a leveling agent, 0.3-0.8 part ofa water-based drier, 0.3-0.8 part of a thickener, 0.5-1 part of a wetting agent, and 30-35 parts of deionized water; the component B is composed of the components in parts by weight: 40-50 parts of anisocyanate curing agent, and 10-20 parts of a cosolvent. The inter-coat has the advantages of long-term excellent anticorrosive performance, strong adhesion force of the substrate, high mechanical strength, excellent friction resistance, excellent salt spray resistance, good water resistance, chemical resistance, oil resistance and impact resistance, high construction adaptability and the like.

The invention relates to a rotor aircraft comprising rotors, a rotor power driving portion, a controlling portion used for controlling taking-off, landing, and steering of the rotor aircraft, and a load portion. The rotor aircraft is characterized in that a torque isolation portion is arranged between the rotors and the load portion. In prior arts, because of the torque differences of rotors on the aircraft, great influence is applied on the rotor aircraft, aircraft flight stability is influenced, and especially parts such as loads arranged on the aircraft would rotate or sway left and right. With the rotor aircraft provided by the invention, the problem is solved. Parts such as loads do not rotate with the rotation of the rotors, such that the parts such as the loads can operates stably. The rotor aircraft is especially suitable to be used in aerial photography or aerial reconnaissance.

The invention discloses a blocked double-stator switched reluctance motor for an electric vehicle. N(i)s( / i) inner blocked stators are uniformly arranged along the circumferential direction of an outer wall of a non-magnetized inner stator collar; N(i)r( / i) inner side blocked rotors are coaxially sleeved out of the N(i)s( / i) inner blocked stators with gaps; N(i)r( / i) outer side blocked rotors areuniformly arranged on the outer wall of the non-magnetized inner stator collar along the circumferential direction; N(i)s( / i) outer blocked stators are coaxially sleeved out of the N(i)r( / i) outer side blocked rotors; a radial cross section of each of the outer blocked stators is M-shaped; two ends of an outer stator yoke part extend inward to form two outer stator auxiliary teeth, and the middleof the outer stator yoke part extends inward to form an outer stator branched excitation tooth; an outer winding is wound on the outer stator branched excitation tooth; an inner end of the outer stator branched excitation tooth extends inward along the radial direction to form two outer stator branched teeth; the inner blocked stators and the outer blocked stators have the same topological structure; closed magnetic circuits generated by the inner and outer stators are independent of each other; the excitation tooth located in the middle is disposed in the branched structure, thus the problemof large local flux density between the teeth is solved.

Disclosed is a constant-temperature insulation steel silo. A common steel silo is already widely used as being low in cost and fast in construction and is unsuitable for long-term storage of grain and only suitable for revolving as not having an insulation function. The constant-temperature insulation steel silo is composed of a foundation (1) and a silo body (2) connected with the foundation, an insulation layer (3) is fixed to the outer side of the silo body through connectors, a peripheral plate (4) is fixed on the insulation layer or the silo body through supports, and the insulation layer and the peripheral plate form an air heat-insulation course. The constant-temperature insulation steel silo is used as a granary for long-term grain preservation.

The invention discloses an emulsified paraffin release agent, which is characterized by being prepared from the following raw materials (by weight): 10-25 parts of paraffin, 5-8 parts of stearic acid, 5-10 parts of animal oil or plant oil, 5-10 parts of a co-emulsifier, 1-10 parts of sodium hydroxide and 1-10 parts of ethyl 4-hydroxybenzoate. The release agent of the invention is mainly used in molding of a concrete material. The release agent is sprayed on the surface of a mould, and is used for preventing a product from being glued with the mould so as to have an effect of isolating the product from the mould. Then, the product can be greatly moulded. The release agent of the invention has a good demoulding effect.

The invention discloses a preparation method of high-thermal-conductivity silicone rubber containing an aluminum nitride / graphene hybrid material, and belongs to the technical field of preparation ofhigh-performance polymer materials. The preparation method comprises the following processes: (1) under the ultrasonic action, enabling modified aluminum nitride and modified graphene to be subjectedto reaction to prepare the aluminum nitride / graphene hybrid material; (2) sequentially adding the hybrid material prepared in the step (1), a softening agent and an anti-aging agent to silicone rubber, and performing mixing by utilizing an open mill to prepare mixing rubber; and (3) enabling the mixing rubber prepared in the step (2) to pass through two rollers of the open mill in a very small thickness for several times while adding a cross-linking agent so as to obtain sheets, and then, performing vulcanization to prepare vulcanized rubber, namely the high-thermal-conductivity silicone rubber containing the aluminum nitride / graphene hybrid material. The silicone rubber prepared by the preparation method disclosed by the invention has good toughness and elasticity and excellent thermal conductivity, can be widely applied to fixation, anti-shock filling and adhesion between a power device and a radiator in the fields of heating, electricity, electronics, aviation and the like, and hasobvious economic values and social benefits.

The invention relates to the technical field of papermaking, in particular to a piece of liquid crystal glass dust-free protective paper. The liquid crystal glass dust-free protective paper is prepared by the following steps: with bleached chemical softwood pulp as a raw material, conveying the raw material to a net cage with a destaticizing device via a feeing fan, wherein the net cage is used for removing static electricity on the surfaces of fibers and ensuring that the fibers are uniformly dispersed and free of flocculation; forming a paper web through an air supply system, an exhaust system and a forming net; and carrying out heat compressing, upper glue spraying, baking, lower glue spraying, rebaking and calendaring on the paper web, and then forming the liquid crystal glass dust-free protective paper, wherein the liquid crystal glass dust-free protective paper has good heat resistance, moisture resistance, anti-static property and anti-corrosion performance and can be applied to the processing or transporting process of coated glass, optical glass and liquid crystal glass substrates to play roles in backing and isolating. By virtue of a dry agglutination technique, the water consumption in the production process is greatly reduced, so that the problem of pollution of a natural water body is relieved; the capital expenditure is relatively low; the energy consumption in the production process is relatively low; and the production cost is reduced.

The invention discloses an automatic welding device and method for a marine low-speed diesel engine branch pipe flange. The automatic welding device comprises a bottom plate, a base, an I-shaped horizontal beam, two turning bodies, two baffle supports, an anti-arc baffle and a welding robot, wherein the base and the welding robot are installed on the upper side of the bottom plate, the center of the I-shaped horizontal beam is connected with the base through a servo motor horizontal rotating mechanism and horizontally rotates, the ends of the four corners of the I-shaped horizontal beam are fixedly provided with servo motor perpendicular rotating mechanisms, the two ends of each turning body are connected with the servo motor perpendicular rotating mechanisms at the ends of the two cornersof the same side of the I-shaped horizontal beam correspondingly and driven by the servo motor perpendicular rotating mechanisms to perpendicularly rotate, each turning body is provided with a hollowclamp, the anti-arc baffle is perpendicularly fixed to the middle of the I-shaped horizontal beam through the baffle supports, the welding robot is fixed to the bottom plate on one side of the I-shaped horizontal beam, and the I-shaped horizontal beam rotates between personnel and the welding robot so that manual operation and the automatic welding station can be switched. By means of the automatic welding device and method, operation conditions are improved, labor intensity is reduced, and the welding quality is improved.

The invention relates to a full-automatic label feeding machine. The full-automatic label feeding machine is used for feeding labels into a packing box and comprises a rack, a sucker mechanism, a paper supply mechanism and a twisting distributing mechanism. A feeding opening is formed in the rack, and the packing box is positioned below the feeding opening; the sucker mechanism comprises a sliding plate, a translation cylinder assembly, a guide track assembly and a sucker assembly, the sliding plate is a bent structure, and the sliding plate is fixedly connected with a cylinder output end of the translation cylinder assembly, the lower end surface of the guide track assembly and a side surface of the sucker assembly respectively; the paper supply mechanism is mounted on the inner side wall of the rack, is positioned below the sucker mechanism, and comprises a linear sliding table module, a first paper loading plate and a first paper stopping plate; and the twisting distributing mechanism is positioned on the feeding opening and comprises an upper fixing block, a guide shaft, a twisting distributing base, a paper loading assembly and a paging device. By the full-automatic label feeding machine, labels in various specifications can be simultaneously fed into the packing box.

The invention discloses a resonant dual-power-supply aircraft electromagnetic transmission device. A high-power main circuit module comprises an alternating-current generator set, a direct-current onboard power supply, a power-conversion main circuit, a resonant main circuit and a transmitter circuit; the alternating-current generator set and the direct-current onboard power supply are in parallel connection with the power-conversion main circuit, the power-conversion main circuit converts onboard power supply direct current or generator set alternating current into high-frequency alternating current through a high-frequency inverter bridge or a controllable rectifier bridge-high-frequency inverter bridge, the high-frequency alternating current is converted into direct current through a high-frequency uncontrolled rectifier bridge, and the direct current is inverted into alternating-current square waves through half-bridge inverter; the power-conversion main circuit is connected with the resonant main circuit, and the resonant main circuit converts the alternating-current square waves into sine waves with a constant resonant frequency; and the resonant main circuit is connected with the transmitter circuit, and the transmitter circuit transmits required electromagnetic waves with a transmission frequency and a waveform. The resonant dual-power-supply aircraft electromagnetic transmission device reduces the capacity, hoisting weight and size of a hoisting alternating-current generator by utilizing a parallel power supply manner.

A method for reducing automobile exhaust on urban roads comprises a transformer substation and a plurality of automatic dust removing isolation fence units, wherein the plurality of automatic dust removing isolation fence units are arranged between a plurality of lanes; each two automatic dust removing isolation fence units are connected and fixed to each other to form a big isolation fence; and the automatic dust removing isolation fence units are connected with the transformer substation after being connected with each other in parallel through cables. According to the method for reducing the automobile exhaust on the urban roads, as the automatic dust removing isolation fence units are arranged between the plurality of lanes in cities, the city air is intelligently detected and purifiedand the flying dust and smog are reduced. Compared with the pure dust removing device, the method for reducing the automobile exhaust on the urban roads is more economic and energy-saving.

The invention discloses an inversed pasting sleeve hole waste discharging process. The inversed pasting sleeve hole waste discharging process comprises the following steps that S1, a glue face of a main film is upward, a process film with glue on one face is compounded below the main film, and a glue face of the process film is attached to the lower surface of the main film; S2, a soft weak glue film is compounded to a composite film; S3, a cutter is used for conducting die cutting on the weak glue film and the main film of the composite film from top to bottom, and die cutting is carried outto obtain the outline of the main film; S4, outline waste of the weak glue film and the main film is separated; S5, a non-colloidity separating thin film with material bring small holes is attached tothe weak glue film, and the material bring small holes are located on the weak glue film; S6, a thin film with strong glue is used, and the thin film is compounded to the non-colloidity separating thin film; S7, the thin film with the strong glue is separated from the composite film; S8, the composite film is covered with body paper; S9, a glue-provided process film with the lowest layer providedwith the composite film is separated; and S10, a finished product is rolled. According to the inversed pasting sleeve hole waste discharging process, the effect that in the procedure that the processfilm above the main film enables the thin film with the strong glue to be separated in a pasting manner, textured paper is not pasted to the process film below the main film is achieved.

The invention discloses a medicine conveying mechanism in the field of medicine sorting equipment. The medicine conveying mechanism comprises a conveying belt. The conveying belt is provided with triggering mechanisms and a plurality of limiting mechanisms arranged in parallel. Each limiting mechanism comprises two grooves formed in parallel in the conveying direction of the conveying belt, wherein the grooves are formed in the conveying belt, limiting plates are movably arranged in the two grooves, the side walls of the sides, close to each other, of the two grooves are provided with hinges, one metal blade of each hinge is connected with the side wall of the corresponding groove, and the other metal blade of each hinge is connected with the upper surface of the corresponding limiting plate. Each triggering mechanism comprises a spring and two cushion blocks located below the spring. The limiting plates in every two grooves are connected through the corresponding spring, and every two cushion blocks are arranged on the edges of the corresponding two grooves. When a packaging box is placed on the conveying belt, the triggering mechanisms can make the limiting plates in the limiting mechanisms overturned and erected out of the grooves, the packaging box is clamped, and the effect of preventing the packaging box from sliding is achieved.

The invention discloses a power equipment isolation safe sealing device which comprises a housing and power equipment. A slide block is slidably snapped with a chute. The lower end of a pull rod is fixedly connected with a top board. A first spring sleeves the outer wall of the pull rod. An insertion rod penetrates through a vertical board and is snapped with the housing. The outer wall of the insertion rod is fixedly connected with a supporting board. The left side of each of the upper end and the lower end of the supporting board is fixedly connected with a second spring. According to the power equipment isolation safe sealing device, a sealing effect of the equipment is ensured through cooperation between the housing and a pin, cooperation between a snapping board and the vertical board, cooperation among the vertical board, a transverse board and a slide block chute, cooperation between the pull rod and a top block, function of the first spring, function of a sealing strip and a second sealing layer; higher safety of the equipment can be realized through multiple sealing layers; and the sealing device can be facilitated and detached through cooperation between the insertion rodand the supporting board and cooperation between the supporting board and the second spring. Furthermore the power equipment isolation safe sealing device has advantages of high convenience in use, and high practicability.

The invention provides a smalt for PVC (Poly Vinyl Chloride) plastic processing, consisting of the following components in percentage by weight: 20-45% of carrier, 5-10% of adjuvant, and 50-70% of pigment. The carrier is one or more of chloride-vinyl resin, chloroethylene-vinyl acetate-maleic acid ternary polymerization resin, chloroethylene-vinyl acetate-hydroxy crylic acid ternary polymerization resin, chloroethylene, PVC or methyl methacrylate. According to the invention, the additive is well dispersed, keeps stable chemical stability and is correct and stable in addition amount. In term of a processing technology, as a powdery additive and resin are quite different in the size of particles, uneven addition in amount often happens. However, as the smalt and PVC particles are very similar in diameter, the addition amount can be kept stable. The addition process is convenient. The smalt can keep the environment clean, and is beneficial to production of PVC products with high quality.

The invention relates to the field of explosive-proof equipment, in particular to a dust backpressure explosive-proof valve. The dust backpressure explosive-proof valve comprises a valve body and a valve disk. An inclined end face is integrally and fixedly installed in the valve body, the valve disk is fixedly connected with a valve disk rocker, a positioning shaft is fixedly arranged at the upper end of the valve disk rocker, a limiting plate is fixedly installed on one side of the inclined end face, and the positioning shaft is connected with a transmission device installed outside the valve body. A valve cover is fixedly connected with the valve body, and a sealing gasket is installed at the position, making contact with the valve body, on the valve cover. A detonation or an explosion occurs on the outlet side of the explosive-proof valve, as the backpressure is increased, air flow flows in the reverse direction, the backpressure valve disk is closed, the pressure wave produced by the explosion will enable the valve disk to be closed to the inclined end face on the inlet side, the explosion is prevented from being transmitted to an upstream pipeline and equipment, and an isolation effect is achieved.

The invention belongs to the technical field of anticorrosive coating, and particularly relates to long-lasting anticorrosive finishing paint for a metal substrate and a preparation method thereof. The long-lasting anticorrosive finishing paint comprises a component A and a component B, wherein the component A comprises the following raw materials in parts by weight: 35-45 parts of an epoxy-organosilicone resin modified acrylate-polyurethane emulsion, 10-15 parts of functionalized modified graphene, 12-18 parts of fillers, 5-10 parts of a pigment, 8-12 parts of a cosolvent, 0.3-0.8 part of a defoaming agent, 0.5-1 part of a leveling agent, 0.5-1 part of a thickening agent, 0.5-1 part of a water-based drier, 0.8-1 part of a wetting agent and 20-30 parts of deionized water; the component B comprises the following raw materials in parts by weight: 55-65 parts of an isocyanate curing agent and 35-45 parts of a cosolvent. The long-lasting anticorrosive finishing paint for the metal substrate has the advantages of long-lasting excellent anticorrosive performance, strong substrate adhesion, high mechanical strength, excellent friction resistance, excellent salt spray resistance, strong construction adaptability and the like.

The invention relates to a single-pole flux reverse permanent magnet linear motor, and aims to provide a leakage flux reduced type single-pole flux reverse permanent magnet linear motor with high fault freedom and low manufacturing cost. According to the technical scheme, the single-pole flux reverse permanent magnet linear motor comprises a rotor in a concave pole structure and a stator in a convex pole structure; the rotor consists of a primary iron core, an armature winding and permanent magnets; the stator consists of a secondary iron core; the secondary iron core is made of a magnetic permeability material; the primary iron core is composed of a plurality of fault-tolerant teeth and armature teeth which are arranged alternately; the armature winding is wound on the armature teeth by using a concentrated winding; one permanent magnet is adhered at the end part of each armature tooth; and excitation directions of the permanent magnets at the end parts of the armature tooth are the same.

The invention discloses a high-isolation ultra-wideband MIMO antenna suitable for 5G full-band communication, which comprises a dielectric substrate, a metal floor and a radiation unit, wherein the metal floor is arranged on the back surface of the dielectric substrate; the radiation unit comprises a first radiation unit, a second radiation unit, a third radiation unit and a fourth radiation unitwhich are completely the same in structure; the four radiation units are arranged on the periphery of the dielectric substrate in a folding and mutually orthogonal mode; and the four radiation units carry out feeding in a coaxial feeding mode through the four coaxial feeding ports respectively. According to the high-isolation ultra-wideband MIMO antenna suitable for 5G full-band communication, theworking frequency band covers the ultra-wideband frequency band, and has high isolation in the whole frequency band; the radiation units are folded, so that the size of the MIMO antenna is reduced, the MIMO antenna can be placed in a mobile phone for application, and omnidirectional radiation of the antenna is facilitated; and the communication requirements of different frequency bands are met, and the input and output intensity of communication signals is improved.

The invention provides electronic equipment. The electronic equipment comprises an antenna and a metal structure which are accommodated in a shell; in a first direction, the metal structure, at least part of the antenna and part of the shell are arranged in sequence; the metal structure is provided with a non-closed slot, and the slot penetrates through the metal structure in the first direction; the metal structure comprises a first surface directly facing the antenna in the first direction, the vertical projection of the antenna on the first surface is an antenna projection area, and the slot extends from the edge of the first surface to the interior of the first surface and passes through the antenna projection area, thus, when the antenna is in a working state, induced current in the same direction as current on the antenna is formed on the first surface. By using the electronic equipment provided by the invention, due to the existence of the non-closed slot on the metal structure, the adverse effect of the induced current on the magnetic field of the antenna is reduced, and the working performance of the antenna is effectively improved.

The invention discloses a method for reducing car tail gas and based on an intelligent dust-sucking type isolating fence. A plurality of automatic dedusting isolating fence units which are arranged between a plurality of lanes are included, every two automatic dedusting isolating fences are connected and fixed to form a large block of isolating fence; and two air inlets and at least an air outletare formed in the outer wall of each automatic dedusting isolating fence unit; the interior of each automatic dedusting isolating fence unit communicates with an air channel of the air inlets and thecorresponding air outlet, and filtering cloth bags are arranged in the air channels in a hanging state, and the air inlets face the filtering cloth bags. According to the method for reducing the car tail gas and based on the intelligent dust-sucking type isolating fence, by arranging the automatic dedusting isolating fence units between the multiple lanes, intelligent detecting and purifying of urban air is achieved, flying dust and haze are reduced, and more economical and energy-saving effects are achieved relative to a pure dedusting device.