219results about How to "Block flow" patented technology

The invention relates to the field of ecological environment protection, in particular to a method used for afforesting a desert. The method used for afforesting the desert comprises the following steps of: 1, excavating a filling slot; 2, paving a waterproof impervious layer; 3, paving a sand layer; 4, paving a plant growing layer; and 5, paving a straw plaited grid. The waterproof impervious layer is arranged in the sand layer, the waterproof impervious layer stops flow direction of water, and water can not leak everywhere deep in the sand layer, thus the aim of saving water is achieved; the used material is environmentally friendly, and human and natural environment can not be polluted; water supply is reasonable, water can be uniformly supplied to plants used for afforesting, the plants can rapidly grow, and the problems of water for afforesting the desert and rainwater seepage control can be effectively solved. The method has a wide application field and is convenient for standardization construction. By applying the method to afforest the desert, a conditioned desert can be afforested, desert vegetation coverage rate can be improved, and a local ecological environment of the desert can be improved.

The invention discloses a method of improving the effect of blocking cement; the G-graded cement is added with short-thread fibres, bridge plug materials, super-thin materials and a retarder; blockage cement grout is injected into a stratum; blockage mud cakes and a cement plug can be formed rapidly in the thief zone of the stratum, which stops the cement grout flowing to the depths of an oil layer, thereby reducing the consumption of the cement grout, protecting the oil layer and lessening the damage to blowholes. Compared with the prior cement grout, the formed paste matrix is of good toughness and shock resistance; the added super-thin materials improve the grain size distribution of the cement grout, reduce the extent of porosity of the paste matrix, and decrease the penetrability of the cement plug, thereby prolonging the service life of the cement plug. Therefore, the adoption of the cement grout and the corresponding craftworks and measures can improve the success ratio of one-time construction of blocking the cement to more than 90 percent, and can prolong the term of validity of blocking to a certain extent. The invention is quite applicable for popularization and application on the spot.

The invention discloses a steel joint structure for an underground continuous wall and a construction method for the steel joint structure, belongs to the technical field of underground continuous walls and aims to provide a steel joint structure for the underground continuous wall which is simple and has a good water stopping effect. According to technical key points, the steel joint structure comprises a front terrae spacing, a rear adjacent terrae spacing and I-shaped steel which is connected between the front terrae spacing and the rear adjacent terrae spacing, wherein anchor bars are distributed among connecting parts between the I-shaped steel and the rear adjacent terrae spacing. The construction method mainly comprises the following steps of: (1) excavating a ground groove of the front terrae spacing; (2) manufacturing a reinforcement cage of the front terrae spacing, and arranging an I-shaped steel joint on the end part of the reinforcement cage of the front terrae spacing; (3) arranging the anchor bars; (4) hoisting and placing the reinforcement cage, and arranging a mud blocking joint pipe on the outer sides of the anchor bars; (5) performing cast molding on concrete; (6) excavating a ground groove of the rear adjacent terrae spacing, manufacturing a reinforcement cage, hoisting a joint pipe, hoisting and placing the reinforcement cage, and cleaning the anchor bars; (7) performing cast molding on the concrete; and (8) circulating the steps from (2) to (7) to form the continuous wall.

The invention belongs to the field of electrochemical batteries and particularly relates to an electrochemical battery. The electrochemical battery comprises a naked battery core, an outer package and an electrolyte, wherein the outer package is made of a soft material and comprises a main body package part, a naked battery core bagging packaging edge and a degassing packaging edge; an adhesive layer is arranged between the naked battery core and the outer package; the naked battery core and the outer package are adhered together after the adhesive layer is heated or / and pressed; the maximal thickness region of the naked battery core is a region A; the maximal thickness value is h1; the minimal thickness between the region A and the adhesive layer is h2; and h1-h2 is greater than or equal to 4 microns. According to the electrochemical battery, the naked battery core and the outer package can be effectively adhered together, so that the problem of dropping of the battery is solved. Meanwhile, a 'barrier wall' of which the height is not less than 4 microns can be built between the adhesive layer and the degassing packaging edge; and glue of the adhesive layer is effectively prevented from diffusing to the degassing packaging edge, so that the problem of the packaging reliability of the battery is solved.

The invention discloses a magnetic-levitation train and a hydraulic guide device and method of the magnetic-levitation train. The hydraulic guide device comprises two groups of first-position sliding platform devices, two groups of second-position sliding platform devices and two groups of third-position sliding platform devices, which are sequentially connected in series and are movably connected; the two groups of first-position sliding platform devices are movably connected through a first hydraulic oil cylinder; the two groups of third-position sliding platform devices are movably connected through a second hydraulic oil cylinder; the first hydraulic oil cylinder and the second hydraulic oil cylinder are buffering type hydraulic oil cylinders with a double-rod piston structure; the first hydraulic oil cylinder and the second hydraulic oil cylinder are communicated through a hydraulic pipeline with a differential pressure valve unit; the differential pressure valve unit is used for adjusting pressure difference between the first hydraulic oil cylinder and the second hydraulic oil cylinder. According to the magnetic-levitation train disclosed by the invention, a levitation module can be distributed along the radial direction when the magnetic-levitation train passes through a curve section, so that mutual coupling of small-range transverse movement of a first-position sliding platform and a third-position sliding platform on linear rails can be effectively prevented; bad influences on the operation stability of the train are avoided, and the stability and sitting comfort of the magnetic-levitation train are improved.

An organic light-emitting element, including a substrate, a first electrode, a light-emitting layer containing more than one organic layer film, and a light-emitting element of a second electrode. The light-emitting element is provided with a covering layer. In a wavelength range of 430 nm - 460 nm, at least one point of the attenuation coefficient of an organic material contained in the covering layer is greater than 0.10, and in a wavelength range of 460 nm - 500 nm, the attenuation coefficient is below 0.10. The organic light-emitting element achieves high light-emitting efficiency and color reproducibility, and can be used as a backlight source or illumination for an organic EL display or a liquid crystal display, or as a light source, indication board or identification lamp etc. for devices such as meters.

The invention provides a liquid crystal display panel. The liquid crystal display panel comprises a first glass substrate and a second glass substrate. Multiple spacing structures are arranged on the inner side of the first glass substrate, and frame glue is arranged on the periphery of the first glass substrate. A flat layer is formed on the inner side of the second glass substrate. A display region is arranged in the middle of the liquid crystal display panel. The frame glue is used for connecting the first glass substrate with the second glass substrate. The display region is arranged in the range defined by the frame glue. The area of the display region is smaller than that defined by the frame glue, and grid-shaped grooves are formed in the region between the outer edge of the display region and the inner edge of the frame glue. According to the liquid crystal display panel, the sealing performance between the first glass substrate and the second glass substrate can be guaranteed, the gap between the first glass substrate and the second glass substrate is not affected, and the phenomenon of non-uniform color or color differences of the periphery of the liquid crystal display panel is avoided.

Description is a patient table may be used in conjunction with an MRI ( Magnetic Resonance Imaging) Scanner which can be effected by electricity and magnetism. This patient table has hydraulic cylinders to effect its movement, so have no use for electric motor which cause interference.

The invention discloses a degradable filter material biogas slurry filter and a filtering method of the degradable filter material biogas slurry filter. The degradable filter material biogas slurry filter comprises a box body, wherein a floating filter material filling hole and a fixed filter material filling hole are formed at the top of the box body, a liquid inlet is formed at the middle part of the box body, and a slag hole is formed at the bottom of the box body; the liquid inlet divides the inner cavity into a floating filter material chamber at the upper part of the liquid inlet and a sedimentation chamber at the lower part of the liquid inlet, a floating filter material is arranged inside the floating filter material chamber, the slag hole is communicated with the sedimentation chamber, and the floating filter material filling hole is communicated with the floating filter material chamber; and the fixed filter material filling hole is communicated with the floating filter material chamber by virtue of the fixed filter material chamber, a grid is arranged at a communication part, a fixed filter material is arranged inside the fixed filter material chamber, and the fixed filter material chamber is connected with a liquid outlet. By adopting the degradable filter material biogas slurry filter, flushing and back washing are not needed, the degradable filter material biogas slurry filter can stably operate for a long time while a filter material is supplemented periodically, and quality of filtered clear solution is stable and controllable.

A chemical cleaning method for an immersed membrane element used in a membrane-separation activated sludge treatment in which organic wastewater containing 1 mg / L or more of manganese is subjected to a biological treatment in an activated sludge treatment vessel followed by solid-liquid separation by a membrane filtration device provided in the treatment vessel, wherein organic decomposition and manganese removal are simultaneously and efficiently carried out and a high recovery effect can be achieved without any adverse effects on microorganisms in activated sludge, when an immersed-membrane element used for a membrane-separation activated sludge treatment of an organic wastewater containing a high concentration of manganese is chemical-washed in an activated sludge treatment vessel by injecting a first solution containing an oxidant from the secondary side into the primary side of the immersed-membrane element, maintaining the same for a given length of time, suctioning and discharging the same from the secondary side of the immersed-membrane element to the outside of the system, injecting a second solution containing an acid from the secondary side to the primary side of the immersed-membrane element, maintaining the same for a given length of time, and carrying out a suction filtration operation.

The invention discloses a localizable automatic draining pipe cleaner. The localizable automatic draining pipe cleaner is arranged in a pipeline, and comprises a sealing leather cup, a pipe cleaner frame and a draining device, wherein the sealing leather cup is arranged on the pipe cleaner frame in a sleeving manner, and is used for elastically contacting the inner wall of a pipeline, so that stains in the pipeline can be cleaned; the draining device is arranged at the outlet of the cavity of the pipe cleaner frame, when the water pressure of a water flow entering from the inlet of the pipe cleaner frame is more than set pressure, the draining device is opened under pushing of the water flow, and the water flow flows to the outlet of the cavity of the pipe cleaner frame through the draining device, so that stains blocked at the outlet can be cleaned; when the water pressure of the water flow entering from the inlet of the pipe cleaner frame is less than the set pressure, and the draining device is closed, flowing of the water flow can be stopped. The localizable automatic draining pipe cleaner can be used for improving the water source utilization and accelerating the speed of pipe cleaning.

The invention provides a well bottom gas-liquid separator, which comprises a tubular part (21), a gas-liquid separation chamber (2), a through shaft motor (16) and a compressor (7), wherein a tube wall defining an air inlet (1) and an air outlet (81) is arranged around the tubular part (21), the air inlet (1) and the air outlet (81) have a certain axial distance, the gas-liquid separation chamber (2), the through shaft motor (16) and the compressor (7) are sequentially arranged in the tubular part (21) arranged between the air inlet and the air outlet on the same axial line, a liquid collecting convex plate (82) provided with a projected hole seals and covers the air outlet (81) formed in the top of the tubular part (21), a cavity formed between the tubular part (21) and an outer sleeve (11) forms a gravity separation part (20), the top of the gravity separation part (20) is sealed, an air inlet hole (13) is formed in a wall of the tubular part (21) corresponding to the compressor (7), a plurality of exhaust / liquid discharge holes (4) are formed in the tubular part (21) provided with the gas-liquid separation chamber (2) arranged in the middle part of the gravity separation part (20), a liquid collecting groove (5) is formed by a liquid blocking plate (15) and the outer sleeve (11) at the end, near the air inlet (1), of the gravity separation part (20), and a condensed liquid recovery pool (12) is positioned on the top of the gravity separation part (20).

The invention relates to an agitation grinder used for processing the grinding material with fluid ability. The grinder comprises a grinding container (2) and an inner stator (22) arranged in the grinding container, wherein a ring cylindrical rotor (35) which can be driven to rotate is arranged between the inner stator (22) and the wall (9) of the container, the rotor and the wall (9) of the container encircle to form a grinding cavity (8); a grinding material output channel (47) is formed between the rotor (35) and the inner stator (22), the grinding material output channel is connected with the grinding cavity (8) with the help of a steering channel (50); and the grinder is provided with a device used for preventing grinding medium (43) from entering the grinding material output channel (47) through the grinding cavity (8).

A nail polish bottle comprises a bottle body, a cap including a disc portion having a center hole and one or more air holes and including a discharge passage and one or more external-air introduction grooves in flow contact with the air holes. A pressure opening and closing valve is mounted to the disc portion such that a skirt portion of the valve may sit below the disc portion and a top of the valve may be above the disc portion. The skirt portion may press against the disc portion to close the air holes. When internal pressure in the bottle body opens the top of the valve, nail polish may flow through the discharge passage if the bottle is upside-down. When the internal pressure is released, the top of the valve may close and the skirt portion may move away from the disc to open the air holes.

The embodiment of the invention discloses a transmission device for opening and closing a ventilation plate of a unit curtain wall. The transmission device comprises a rotating assembly, a transmission mechanism, a baffle and the unit curtain wall. The ventilation plate is embedded in a main body structure, and a plurality of ventilation holes are formed in the ventilation plate. When a cover plate and the main body structure are in a gradually buckled state, a pressing plate applies certain pressure to a shifting plate, so that one end of the shifting plate is pressed downwards, the other endof the shifting plate is lifted, the other end of the shifting plate abuts against the baffle, and the baffle can be attached to the ventilation plate. Due to the fact that the plurality of ventilation holes are formed in the ventilation plate, and meanwhile the ventilation holes are blocked, the effect of blocking air circulation is achieved. When the cover plate is gradually lifted, along withthe lifting of the cover plate, the other end, which initially abuts against the baffle, of the shifting plate changes to be separated from the baffle, the baffle is separated from the ventilation plate, the ventilation holes are opened, and air exchange circulation is realized. Operation is easy, installation is convenient, the cost is saved, the state is stable, and the normal working function of the ventilation holes and the heat preservation and insulation performance are guaranteed.

The invention discloses a sectional curtain water barrier structure. The sectional curtain water barrier structure comprises a horizontal inhaul cable structure and a multi-section curtain water barrier structure, wherein the horizontal inhaul cable structure comprises concrete anchorage piers and a horizontal inhaul cable; the concrete anchored piers are arranged on two sides of the river bank; two ends of the horizontal inhaul cable are anchored on the concrete anchorage piers respectively; the horizontal inhaul cable is higher than the maximum water level of a reservoir; the multi-section curtain water barrier structure is formed by a plurality of curtain water barrier structures which are connected with each other in parallel. The sectional curtain water barrier structure is capable of effectively preventing low-temperature water in the lower part of the reservoir from flowing to a water intake of a power plant, so that the surface water of the reservoir is frequently taken when in water taking; the discharging water flow temperature of a hydropower station is increased; the influence of power generation discharging water flow on the temperature and the content of oxygen of the downstream river channel is reduced; growth and development of downstream aquatic organisms are facilitated; the structure is also capable of adjusting the curtain water barrier range according to different water depths, thus ensuring that the surface water can pass through the curtain water barrier structure.

The invention discloses an insulated gate bipolar translator (IGBT) device with two short-circuit positive electrodes, and belongs to the technical field of semiconductor power devices. A positive electrode structure of the device is a two-positive-electrode short-circuit structure. The IGBT device comprises a first P+ hole emission layer, a second P+ hole emission layer, a metal collector and a silicon dioxide barrier layer, wherein the silicon dioxide barrier layer is positioned on the back face of the first P+ hole emission layer; the metal collector is positioned on the side face of the first P+ hole emission layer and below the second P+ hole emission layer, and the two P+ hole emission layers are contacted with each other; the second P+ hole emission layer is positioned at the bottom of an N- drift region and staggered in parallel with the first P+ hole emission layer; and an electronic trench is formed between the first P+ hole emission layer and the second P+ hole emission layer. The positive electrode structure of the IGBT device is improved, so that the hole injection efficiency is improved, the current carrier concentration distribution in the drift region is optimized, the conductivity modulation performance in the device body is improved, a negative differential resistance (NDR) region is eliminated effectively, the cut-off loss of the IGBT device is reduced effectively, and finally, compromise optimization for conductivity pressure drop and cut-off loss is realized.

The invention relates to electronic equipment, in particular to dispersion of heat generated by high-power electronic equipment including a power battery, a server, network equipment and the like. A multi-channel combined water-cooling plate comprises a plate body, a water chamber and a waterproof baffle plate, wherein the plate body comprises at least two pipelines; the pipelines are single-hole circular pipes in general; the pipelines are gradually bent according to the shapes of flow passages and are combined into the plate body side by side; the plate body can be arranged on a substrate; the substrate is a flat plate or a flat plate with pipeline grooves; the water chamber comprises a water chamber bottom plate and a water chamber cover board; a water pipe connector is arranged on the water chamber; the waterproof baffle plate is arranged between the water chamber and the electronic equipment; and the pipelines pass through the waterproof baffle plate. The multi-channel combined water-cooling plate has the advantages that the flow passage distribution is flexible; the processing is simple; the plate body is light and thin; the welding surface is small; the reliability is high; the safety is high; the flow passage combination is flexible; the heat dissipation balance effect is good; the flow resistance is adjustable; and the heat dissipation efficiency is high.

The invention discloses a centrifugal fan. The centrifugal fan comprises a volute and an impeller and a flow collector which are arranged inside the volute, wherein an air inlet is formed in the volute, the flow collector is arranged at the air inlet position, the impeller and the flow collector are provided with a common axis, the flow collector comprises an annular installation portion connectedwith the volute and a flow guide portion used for guiding airflow, the flow guide portion comprises a radial-direction flow guide portion extending inwards from the radial-direction inner side of theinstallation portion and an axial-direction flow guide portion penetrating through the air inlet to extend to the inner portion of the volute from the radial-direction inner side of the radial-direction flow guide portion, the impeller comprises a front ring, a rear ring and blades arranged between the front ring and the rear ring, the centrifugal fan is characterized in that in the axial-direction cross section of the flow collector, the axial-direction flow guide portion is a curve expanding to the radial-direction outer side gradually from one end connected with the radial-direction flow guide portion to the impeller direction, the end portion, connected with the front ring, of each blade is formed with a concave portion, and each concave portion is formed by concaving in the directionfrom the radial-direction inner side of each blade to the radial-direction outer side of each blade.

The invention discloses a port protecting circuit capable of preventing inverse current leakage. The port protecting circuit capable of preventing the inverse current leakage comprises a resistor, a power supply, a first phase inverter, a second phase inverter, a NOR gate, a first PMOS transistor, a second PMOS transistor, a first NMOS transistor, a second NMOS transistor, a third NMOS transistor, a fourth NMOS transistor, a fifth NMOS transistor and a sixth NMOS transistor. According to the port protecting circuit capable of preventing the inverse current leakage, when a voltage of the output end of the protecting circuit is lower than 0 V, the current is effectively prevented from inversely flowing out of an output port from the ground, and meanwhile when the voltage of the output end is higher than a power supply VDD, the large current is prevented from damaging a chip, and thus the service life of the chip is guaranteed.

The invention relates to a device for discharging a fluid medium from a space (101), which is pressure-damped as opposed to an environment, into the environment (102). The invention further relates to a valve arrangement for discharging a fluid medium from a space, which is pressure-damped as opposed to an environment, into the environment, comprising an inlet opening (103), which is in gas pressure contact with the pressure-damped space in the installed position, an outlet opening (104) positioned below the inlet opening in the installed position in the direction of gravity, said outlet opening being in gas pressure contact with the environment in the installed position, a connecting channel (110) connecting the inlet opening to the outlet opening, a return flow stop valve (120), which is configured in order to allow the fluid medium to pass from the inlet opening to the outlet opening under the influence of gravity, and in order to close it off if a predetermined gas overpressure present in the environment as opposed to the pressure-damped space is exceeded, a through-flow stop valve (130), which is configured to allow the fluid medium to pass from the inlet opening to the outlet opening under the influence of gravity, and to close it off if a predetermined gas overpressure present in the pressure-damped space as opposed to the environment is exceeded.

The invention provides a thermal insulation material and electronic equipment using the same and aims to solve heat conduction loss during cooling and heating of the internal of two warehouses spaced by a separator plate. The invention relates to a thermal insulation material which reduces heat conduction loss and a spacing thermal insulation material of electronic equipment using the same thermal insulation material. By using a thermal insulation material provided with aerogel as a nanometer porous body of silicon dioxide in an enclosure manner, the thermal insulation material which can be buried in a complex form is provided, so that heat movement with air around the separator plate as a thermal medium is inhibited, and the energy saving performance of electronic equipment such as a vending machine and a refrigerator is improved.

The invention aims at providing a semi-continuous casting device and method for inhibiting composition segregation of an aluminum alloy ingot to overcome the defects of equipment and methods for reducing composition segregation of ingots, especially large-size ingots in the prior art and belongs to the technical field of aluminum alloy casting equipment. The device comprises a pressing plate, a heat insulation nut, a flow guiding partition plate, a graphite ring, a crystallizer, a wire and a dummy ingot head. The heat insulation nut is located on the upper portion of the crystallizer and is fixed to the crystallizer through the pressing plate. The flow guiding partition plate is located in the heat insulation nut. The partition plate is provided with an open hole. The graphite ring is embedded in the inner wall of the crystallizer. The coil is located in the crystallizer. A cooling water hole is formed in the lower portion of the inner wall of the crystallizer. The dummy ingot head is located on the lower edge of the graphite ring in the crystallizer. The lower end of the dummy ingot head is connected with a casting machine. According to the semi-continuous casting device, the position and the size of the open hole in the flow guiding partition plate are adjusted, and aluminum melt is evenly dispersed into the crystallizer under the stirring action of an electric magnetic field, so that composition segregation of liquid cave depth and the interior of the ingot in the aluminum alloy casting process is effectively reduced.

A beverage maker including a housing, a roll top lid, a brew chamber, a removable fresh water reservoir, and a reversible, storable stand is provided. The roll top lid rotates selectively permit access to the brew chamber, which is enclosed by the housing. In the open position, the roll top lid is substantially concealed within the housing. The fresh water reservoir is located beneath the brew chamber, and the reservoir includes an optional, selectively removable lid with an integrated water level gauge. The stand is stored within the housing beneath the fresh water reservoir. The stand supports a brewed beverage receptacle on a step. In use, the beverage maker dispenses coffee to a brewed beverage receptacle, such as a travel mug, coffee cup or the like.

An ocean wave force monitoring device disclosed by the present invention belongs to the signal monitoring technology field, and comprises a buoyancy column, a guiding rod, a sealing head, a sleeve, adrying agent, a fixing support, a connecting clamp, an elastic film, a strain gauge, a signal line, an A / D converter and a water storage tank. When the ocean waves pass the buoyancy column, and underthe action of the buoyancy, the buoyancy column drives the guiding rod to move up and down in a sliding cavity and further drives the elastic film connected at the bottom to telescope. According to the ocean wave force monitoring device provided by the present invention, the strain gauge on the elastic film real-timely outputs the strain signals of the elastic film, and the A / D convert converts anelectric signal into a digital signal to transmit to the monitoring device. Moreover, the ocean wave force monitoring device provided by the present invention is convenient to install, is strong in structure reliability and high in sensitivity, can adapt to the complex ocean environments, can monitor the ocean wave environments, and provides the good monitoring means for the ocean engineering construction.

The invention discloses a blood vessel dredging and cleaning device. The device comprises a balloon catheter, a balloon and a marking ring, wherein the balloon is wrapped at a distal end of the balloon catheter, a distal end and a proximal end of the balloon are respectively fixedly connected with the balloon catheter passing through the balloon, the marking ring is arranged at the distal end anda proximal end of the balloon catheter, a balloon expansion channel and a guide wire guide channel are arranged in the balloon catheter, a communication hole is formed in a wall of the balloon catheter, an overall shape of the balloon in the inflated state is a truncated cone or a cone, the distal end of the balloon is a large diameter end, and the proximal end is a small diameter end, the balloonis composed of a distal end surface, a proximal end surface, a tapered side wall, and a unit plug-removing protrusion, the distal end face is in arc transition connection with the conical side wall,the proximal end face is in arc transition connection with the conical side wall, the unit thrombus removal protrusions are distributed on the conical side wall of the balloon at intervals, and the unit thrombus removal protrusions are provided with protrusion cavities. The device has advantages of novel structure, good thrombus removal effect, little damage to blood vessel wall and the like.

The invention relates to ventilating insoles which are arranged in shoes for a user to step. Each insole comprises a pad body and an air bag, wherein the air bag is embedded into the pad body; an air sucking area, an exhaust area and an air inlet channel which is engaged between the air bag and the air sucking area are arranged on the pad body; a check valve is correspondingly respectively built in the engaged positions of the air inlet channel and an exhaust channel of the air bag, thus the inflating insoles can achieve active ventilating effect in the process of stepping of a user, especially the top end of the air channel forms a tip and is difficult to flatten or inhibit ventilation due to compression caused by the way that the air inlet channel and the exhaust channel are provided with sections in a triangular structure so as to form thin ventilating insoles, and the ventilating insoles are quite comfortable when freely applied to various shoes by the user.

The invention provides a driving control circuit and a robot. The driving control circuit is used for driving the driving motor of a steering engine to move and comprises a reverse bias module, an electronic switch module, a driving module, a control module, a current sampling module and a voltage regulator module. The reverse bias module is accessed to the power supply of the steering engine and is connected to the electronic switch module. The driving module is connected to the driving motor through the electronic switch module. The control module is connected to the driving module and is connected to the electronic switch module through the current sampling module. The voltage regulator module is accessed to the power supply and then is connected to the driving module, the control module, and the current sampling module. The invention provides the driving control circuit comprising the reverse bias module, after the power cut of the steering engine, when the driving motor of the steering engine mechanically moves due to artificial pushing to generate back electromotive force, the current generated by the back electromotive force is prevented from flowing to the motherboard of the steering engine, and the power-on of the motherboard of the steering engine is avoided.

The invention relates to an antenna, in particular to a power-splitting broadband omnidirectional radiation antenna, which aims at solving the problems that the existing antenna can only work as a single system, the space occupied by the existing antenna is large and the flexibility is poor because the working frequency band of the existing antenna is narrower. One end of a coaxial line is fixedly connected with the center of a metal disc. The other end of the coaxial line sequentially penetrates through the centers of a first metal sleeve, a second metal sleeve, a choke sleeve and a third metal sleeve and is fixedly connected with the center of one end of a metal cylinder. The second metal sleeve, the choke sleeve, the third metal sleeve and the metal cylinder are equidistantly distributed on the coaxial line. One end of the first metal sleeve adjacent to the second metal sleeve, one end of the second metal sleeve adjacent to the choke sleeve, one end of the choke sleeve adjacent to the third metal sleeve and one end of the third metal sleeve adjacent to the metal cylinder are respectively and fixedly connected with a metal sheet. A power-splitting metal wire is arranged between the first metal sleeve and the second metal sleeve. The power-splitting broadband omnidirectional radiation antenna provided by the invention is used for transmitting electromagnetic wave signals.

The invention discloses a lithium-sulfur battery separator material, a preparation method and application thereof. The lithium-sulfur battery separator material is obtained by loading a polyoxometallate-phosphoric acid and polyvinylidene fluoride onto a PP film of a lithium-sulfur battery separator. The prepared lithium-sulfur battery separator material has good electrochemical advantages, phosphotungstic acid can be easily loaded on a conventional PP film, a one-dimensional fiber has uniform morphology, a lithium-ion transmission space is provided, the transmission speed of lithium ions is facilitated, polysulfide can be effectively prevented from flowing to a negative electrode of a lithium-sulfur battery, therefore, the effects of improving the coulombic efficiency and cycle stability of the battery are achieved, the preparation method is simple, and the operation is simple.