44results about How to "Avoid manufacturing difficulties" patented technology

Described herein are a device utilizing a gate electrode material with a single work function for both the pMOS and nMOS transistors where the magnitude of the transistor threshold voltages is modified by semiconductor band engineering and article made thereby. Further described herein are methods of fabricating a device formed of complementary (pMOS and nMOS) transistors having semiconductor channel regions which have been band gap engineered to achieve a low threshold voltage.

A method utilizing a common gate electrode material with a single work function for both the pMOS and nMOS transistors where the magnitude of the transistor threshold voltages is modified by semiconductor band engineering and article made thereby.

The invention discloses a forming method and device of an anisotropic neodymium iron boron bonded permanent magnet, belongs to the technical field of forming of bonded permanent magnets. According to the forming method and device, mixed powder of anisotropic neodymium iron boron magnetic powder, an epoxy resin binder and a curing agent is contained by adopting a split type mould, and is placed in a certain magnetic field for orientation, the mould and the mixed powder are heated to be up to a certain temperature through a resistor, and a laser impact irradiating the anisotropic neodymium iron boron powder directly is generated by using lasers to directly press the powder. According to the forming method and device, because a small amount of the binder is used and the pressure pressing of a higher laser impact wave is adopted, the magnetic property of a binding neodymium iron boron magnet is improved; and the powder is pressed when being heated, the forming procedure and the curing procedure are combined into one, and thus the circulation time of a product in the production process is reduced, the production period of the product is shortened, and the production efficiency is further improved.

The invention relates to a structure of the vertical three-dimensional combined packaging of a micro electric mechanical system and a manufacture method thereof and is characterized by providing a novel structure of the triaxial accelerometer combined packaging and a manufacture method thereof, wherein the structure of the module combined packaging is formed by combining brackets, located by laser calibration and a triple prism and fixed by ultraviolet light cured adhesive and realizes the mutual electrical connection by lead bonding. The whole technical process is compatible with the traditional IC packaging technology and is simple. The structure provides another select for the three-dimensional acceleration measurement while reducing the cost of the packaging and simplifying the technology.

This invention provides an imaging lens system in order from an object side to an image side comprising five lens elements with refractive power: a first lens element with positive refractive power having a convex object-side surface; a second lens element with negative refractive power; a plastic third lens element having at least one of the object-side and image-side surfaces thereof being aspheric; a plastic fourth lens element having a concave image side surface, at least one of the object-side and image-side surfaces thereof being aspheric; and a plastic fifth lens element having a convex object side surface and a convex image-side surface, at least one of the object-side and image-side surfaces thereof being aspheric. By such arrangement, especially with the fourth lens element having the concave image side surface, the imaging lens system can correct peripheral rays while further improving the image resolution thereof.

A universal water-turbine engine pertains to an impact water-turbine engine which converts pressure energy of current to kinetic energy and converts the kinetic energy to rotating mechanical energy in the hydraulic machinery; the water-turbine engine consists of a or a plurality of jet orifices, a device corresponding to the jet orifices, a or a plurality of turning wheels arranged on a main axis for the universal water-turbine engine, a tailrace arranged under the turning wheel, a speed governor, a driving device and other parts. The water-turbine engine can develop and exploit all waterpower resources and has high efficiency, large capacity, safe and reliable performance, simple and reasonable structure as well as low manufacturing cost; the application of the water-turbine engine significantly promotes the current development and exploitation of the waterpower resource, thus being capable of marking a new epoch of rapid development of the hydroelectric power industry.

A photographing optical lens assembly includes, in order from the object side to the image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element and a sixth lens element. The first lens element, the second lens element and the fourth lens element have positive refractive power. The third lens element has refractive power. The fifth lens element has negative refractive power. The sixth lens element with refractive power has an image-side surface being concave in a paraxial region thereof and having at least one convex shape in an off-axis region thereof. An object-side surface and an image-side surface of the sixth lens element both are aspheric. Both of an absolute value of a focal length of the fourth lens element and that of the fifth lens element each are greater than those of the other lens elements.

The invention belongs to the technical field of lithium ion batteries, and particularly relates to a three-electrode lithium ion battery. The three-electrode lithium ion battery comprises a battery shell, a bare battery cell and a lithium titanate pole piece, wherein the bare battery cell and the lithium titanate pole piece are packaged in the battery shell, the bare battery cell is provided witha positive electrode tab and a negative electrode tab which are led out of the battery shell, and the lithium titanate pole piece is provided with a reference electrode tab which is led out of the battery shell. Compared with the prior art, the problem that the interface structure of the battery cell is easy to damage is solved, and the test accuracy and stability are greatly improved. Besides, the invention further provides a preparation method of the three-electrode lithium ion battery, which is easy to operate and solves the problem of high difficulty in the manufacturing process of the existing three-electrode lithium ion battery.

The invention discloses a microalgae culture system, a cavity type photobioreactor and a microalgae culture method. The culture system comprises the photobioreactor capable of containing a culture solution and microalgae. The photobioreactor is in a closed type. The wall of the photobioreactor is a sealed body with a hollow sandwich structure, and / or the wall of the photobioreactor is made of a light heat insulation material. The photobioreactor is provided with a ventilation structure. The culture solution contains bicarbonate. By adopting the system for culturing the microalgae, heat exchange between the photobioreactor and a water environment where the photobioreactor is located can be well controlled, the culture temperature in the photobioreactor can be kept higher than the temperature of the water where the photobioreactor is located so as to increase the growth speed of the microalgae, but the situation that the culture temperature is too high and leads to death of the cultured microalgae will not occur. The culture method is simple, low in cost, high in culture efficiency and suitable for industrial application.

The invention discloses a titling mode sampling modeling and super-resolution reconstruction method so as to achieve the reconstruction of high spatial resolution satellite remote sensing images. The method comprises the steps that a pixel coordinate system on a titling mode sampling grid is mapped onto a pixel coordinate system on a high-resolution conventional sampling grid; in a space coordinate system, triangulation is carried out on tilting mode sampling pixel points; according to an unknown pixel on the high-resolution grid, the value of the unknown pixel on the high-resolution grid is calculated by the adoption of the super-resolution reconstruction method like a polynomial interpolation through the value of the known pixel of the vertex of the triangle where the unknown pixel is located. According to the disclosed titling mode sampling modeling and super-resolution reconstruction method, single-linear-array titling mode sampling imaging is adopted, the problems that two rows of sensor linear arrays are difficult to manufacture, and the registration accuracy is hard to control are solved, meanwhile, image data collection is carried out on sampling intervals by the control over the push broom direction, the spatial sampling grid formed by tilting mode sampling is square, and the problem of accuracy losses caused by the additional geometric correction and the gray-level interpolation is solved.

The present invention provides an image sensor comprising a pixel array module composed of pixel groups, multiple switch control modules, a PFA, a pipelined ADC and a decode module. Each pixel group comprises multiple unit pixels which form at least one unit pixel. Each switch control module corresponds to a row of the pixel array module and includes a first transmission circuit and a second transmission circuit. The PGA process the data outputted by the first and second transmission circuits and the pipelined ADC performs A / D conversion to the data outputted by the PGA. The decode module controls the first and second transmission circuits of each row to alternately read and transmit the unit pixel data, and controls all the first and second transmission circuits to successively output the data of the unit pixels readout thereby to the PGA.

The invention discloses an anaerobic ammonia oxidizing bacteria bioreactor which comprises a reactor body and a peripheral water bath device and is characterized in that a first-stage three-phase separation area and a second-stage three-phase separation area are overlaid to form a complete three-phase separation system; the two sides of the upper part of the second-stage three-phase separation area are connected through a flow guide tube; one side of the second-stage three-phase separation area is connected with a water outlet pipe; a baffle and an air outlet are arranged on the top of the second-stage three-phase separation area; the end port of the lower part of the second-stage three-phase separation area is connected with an end port of the upper part of a reaction chamber in a hot melting technique; the upper part of the first-stage three-phase separation area is connected with the inner wall of the lower part of the second-stage three-phase separation area in an inverted manner;and the lower part of the first-stage three-phase separation area is pasted on the inner wall of the upper part of the reaction chamber. With the adoption of the anaerobic ammonia oxidizing bacteria bioreactor, the temperature in a reactor tank body can be kept into a preset level, high effective denitrogenation is realized, and meanwhile, the sludge living weight is proliferated, so that fully separation of three phases of sludge, water and gas can be realized, sludge washing away is reduced to a large extent, the sludge amount of the anaerobic ammonia oxidizing bacteria in the reactor can be maintained, and the stable operation of an anaerobic ammonia oxidizing denitrification process can be ensured.

The invention relates to a universal fully-effective generating power machine belonging to generating power equipment which can fully and effectively convert conventional energy resources such as water energy, steam energy and the like and new energy resources such as wind energy, steam energy formed by solar heating, tidal water energy and the like into rotating mechanical energy. The machine mainly comprises one or a plurality of jet orifices, a regulating mechanism of the jet orifices, one or a plurality of universal fully-effective rotating wheels, a speed regulator and the like, wherein, the universal fully-effective rotating wheels correspond to the jet orifices and are arranged on a main shaft. The machine can fully develop and utilize water energy, steam energy and wind energy of all types, can fully and effectively convert the utilized water energy, steam energy and wind energy into rotating mechanical energy, can fully replace all current water turbines, steam turbines and wind turbines, and has the advantages of simple structure, reliable performance, low manufacturing cost and easy implementation. Thus, the universal fully-effective generating power machine can replace equipment of hydraulic, thermal and wind power generation industries, and can promote rapid development of new energy resource generating industries such as hydraulic fully-effective power generation, hydraulic wind power generation, solar steam power generation and the like to become main energy source power generating modes.

The invention relates to an alignment detection device for photoetching equipment. The device comprises a wafer stage reference board, the lower surface of which is provided with a transmission type mark for mask alignment; a photon conversion crystal, the center of which is aligned with the center of the corresponding transmission type mark, for converting ultraviolet light into visible light; an optical support for installing the photon conversion crystal; an isolation board for isolating light propagation and an external heat source; an optical filter installed on the isolation board for filtering useless light beyond the visible light band; and a fiber directly connected to the optical filter.

The invention discloses a hollow core energy transfer mid-infrared fiber and a preparation method thereof. The fiber is applied to a quantum cascade laser, has a hollow tubular shape and comprises a fiber cladding, an air core therein and a fiber polymer protective layer disposed on the outer surface of the fiber cladding, wherein the fiber cladding comprises alternating spaced polymer layers andchalcogenide glass layers containing tellurium elements. In the hollow core energy transfer fiber cladding provided by the invention, the chalcogenide glass layers and the polymer layers are periodically spaced to form a photonic band gap structure. Since the cladding contains tellurium elements and the two materials have a high refractive index difference, a wide transmission range (covering 3-20[mu]m) and low loss therein are ensured. In addition, the core contains an air medium to increase the damage threshold of the fiber. Therefore, the fiber provided by the invention can be applied to the quantum cascade laser and rationally designs the above periodic structure to realize the adjustability of the transmission band. In addition, the polymer makes the fiber light, flexible and portable, thereby enabling the portable transmission of laser from the quantum cascade laser.

The invention discloses a direction adjusting structure for hygiene product production equipment. The direction adjusting structure comprises a rotating component, a turning component and a guiding component. The turning component comprises a crank, a connecting rod and a guiding part, wherein the crank is connected with a pivot of the rotating component and connected with the connecting rod in series, and the guiding part is arranged at the end, away from the end connected with the crank, of the connecting rod. A cam guider of the guiding component is connected with the connecting rod of the turning component. During working, the cam guider is guided by a turning cam groove and drives the guiding part to do linear reciprocating motion so that the connecting rod can drive the crank to achieve rotation of the rotating component. The problems that a traditional roller oscillating follower cylindrical cam with a space curved face character is complex in design and difficult to manufacture are avoided, the scheme that a roller straight moving follower cylindrical cam is connected with a slider-crank mechanism in series is adopted, on one hand, the machining difficulty of a cam is greatly lowered, the manufacturing cost is low, the structural stability is high, and the service life is long; and on the other hand, a good mechanical property is achieved, and the requirements for high-speed production can be met.

The invention discloses a four-quadrant cascade high-voltage frequency conversion device, which comprises a transformer, three single-phase electric reactors and three groups of power module units, wherein a secondary side of the transformer is provided with three single-phase windings; each group of power module units consists of N module units; each power module unit consists of two identical controllable H-bridge circuits; two input ends and two output end are respectively formed through the two H-bridge circuits; in the same power module unit, the input ends of the power module unit are connected in sequence, and output ends of each power module unit are connected in sequence; and two power modules at the head and the tail are connected with single-phase secondary windings of the transformer. Bidirectional flow of energy between a power grid and a load is realized, the high voltage resistance of the whole frequency conversion device is realized, the defect that a plurality of secondary side windings are adopted in prior art is overcome, and the usage of electric reactors is greatly reduced, so that the whole high-voltage frequency conversion device is relatively simple in structure, low in manufacturing cost, small in volume, heavy in weight and convenient to transport, mount and maintain.

The invention provides a tunable E-surface cutting H-surface waveguide band-pass filter and a design method thereof, and belongs to the technical field of filter design. The method comprises steps offrom a lumped parameter low-pass prototype, establishing a model with chamfering; after frequency transformation, deriving a new design formula of a coupled resonator band-pass filter with a chamferedlumped parameter; using a microwave structure to implement the coupling structures and resonators to obtain a microwave band-pass filter. The method ensures low loss of the filter without band offset. Compared with a traditional method, the method solves large errors and high losses. The method is widely used in the fields of short-range air defense, battlefield surveillance, missile guidance, airborne collision avoidance, high-resolution imaging, space target detection, battlefield identification, and millimeter wave communication.

A semiconductor power device includes a thick bottom insulator formed in a lower portion of a trench in a semiconductor epitaxial region. An electrically conductive gate electrode is formed in the trench above the bottom insulator. The gate electrode is electrically insulated from the epitaxial region by the bottom insulator and a gate insulator. Charge is deliberately induced in the thick bottom insulator proximate an interface between the bottom insulator and the epitaxial semiconductor region. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.

The invention discloses a forward and reverse lamination device of hygienic products. The device comprises a turntable, a driving part, a fixed shaft and a cam; and a direction change cam groove is formed in the peripheral surface of the cam. The device further comprises multiple steering units arranged on the peripheral surface of the turntable at intervals; and the steering units have rotating parts, direction change parts and guide parts. Cranks of the direction change parts in the adjacent steering units are symmetrically arranged, and are opposite in rotating direction. A cam guider is guided by the direction change cam groove to drive the guide parts to perform a linear reciprocating motion during working, so that the rotating directions of the adjacent cranks are opposite, and the forward and reverse arrangement outputting of the hygienic products is realized. The device prevents the problems of complex design and difficult manufacturing in a traditional cam; on the one hand, the device largely reduces the cam machining difficulty, and is low in manufacturing cost, high in structure stability and long in service life; and on the other hand, the device is excellent in mechanical performance, and can satisfy the high-speed production demand of 600 p / min.

The invention discloses a manufacturing process of gold and platinum jewelry, and relates to the technical field of manufacturing of gold and platinum jewelry. The process includes the steps: a low-temperature metal blank body is prepared; a first layer is electroformed on the outer side of the metal blank body, and recorded as a first plating layer; a second layer is electroformed on the outer side of the first plating layer, and recorded as a second plating layer; and a pattern is engraved on the outer side of the electroformed metal blank body through a numerical control lathe. According to the process, platinum and gold are combined together through low-temperature, electroforming and engraving methods, yellow and white can be effectively and naturally reflected, the display effect is better, and inconvenience and manufacturing difficulty of connecting gold and platinum through a conventional welding method can be avoided.

The invention discloses a K-waveband metamaterial coating microstrip antenna based on topological optimization and a design method. The microstrip antenna comprises an antenna substrate. The lower surface of the antenna substrate is provided with a metal grounding plate. A microstrip patch is arranged in the middle of the upper surface; a coaxial line feed probe is arranged on the microstrip patch; an antenna coating substrate is arranged above the antenna substrate in parallel. The antenna substrate and the antenna coating substrate are connected through a pillar. Wherein a plurality of metamaterial elements are etched on the antenna coating substrate, the metamaterial elements are of an array arrangement structure, each metamaterial element is dispersed into a square grid structure, each grid corresponds to one design element xi, and a set X of all the design elements xi forms a topological structure of the metamaterial elements. According to the invention, the problem of difficult matching of the metamaterial element and the microstrip antenna in the antenna design process is solved, and the antenna has the advantages of simple structure, convenient preparation and high gain.

The invention discloses a dual power system for an electric vehicle, which comprises a motor outputting power to the electric vehicle, the motor is a dual-circuit motor, the winding of the dual-circuit motor is composed of two electric windings connected in parallel, and the two electric windings Powered by two identical power sources in one-to-one correspondence. The power source that can be manufactured through the same two sets of existing mature technologies corresponds to the two sets of electrical windings connected to the dual-circuit motor to form power supply back to the dual-circuit motor. The currents of the two circuits of electric power are superimposed to form double the electric current, which is provided to the motor of the electric vehicle as the total power source, which avoids the manufacturing difficulty faced by a single high-current battery.

The invention discloses a front suspension system and a vehicle, and belongs to the technical field of automobile suspensions. The front suspension system includes: a knuckle; an upper control arm; and an auxiliary frame assembly which comprises a left longitudinal beam, a right longitudinal beam, a front cross beam and a rear cross beam, wherein the front cross beam and the rear cross beam are connected with the left longitudinal beam and the right longitudinal beam in a welded mode, wherein first welding seams are formed between the front cross beam and the left longitudinal beam and between the front cross beam and the right longitudinal beam, and included angles are formed between the first welding seams and the vertical plane; a first lower control arm and a secondlower control arm, wherein one end of the first lower control arm is connected with the auxiliary frame assembly, the other end of the first lower control arm is connected with the steering knuckle through a ball pin, one end of the second lower control arm is connected with the auxiliary frame assembly, and the other end of the second lower control arm is also connected with the steering knuckle through a ball pin, the intersection point of the axes of the first lower control arm and the second lower control arm is a virtual main pin lower point, and the virtual main pin lower point is lower than the auxiliary frame assembly; and a front sliding column assembly. The front suspension system and the vehicle are high in applicability, easy to form and high in deformation resistance.

Then invention provides a color imaging method based on a photosensitive composite medium grid metal oxide semiconductor field effect transistor (MOSFET) detector. According to the color imaging method, different voltage pulses are put on grid electrodes, and the MOSFET works in a deep-exhausting state. According to principles that different grid voltage causes different depths of an exhausting area and lights of different wave lengths has different penetration depth in silicon, red photon, green photon and blue photon in incident light are separated, collected and detected respectively, the three primary colors, namely red, green and blue, are detected in a same pixel to realize color imaging. The color imaging method includes the steps of: imposing a positive pulse Vb on the grid electrodes, forming an exhausting layer of certain depth on a P-type silicon semiconductor to absorb blue light photon, and changing the pulse voltage of the grid electrodes in order to absorb red light photon and blue light photon. The color imaging method has the advantages that color blending phenomenon in traditional color imaging method is avoided, quantum efficiency is improved, technological process is simple, cost is low, and scalability of pixels is good.

The invention relates to a combination method of a heat collection, ventilation and humidity regulation integrated building in the technical field of buildings, a wall body of the heat collection, ventilation and humidity regulation integrated building is bent inwards and downwards on the top surface of the building to form a funnel shape, and the bottom of the funnel shape is a funnel bottom hole; a convex permeable mirror is arranged at the opening part of the funnel; an inverted circular truncated cone-shaped light-transmitting glass wall is arranged at the lower part of a bottom hole of the funnel; a phase change heat storage cavity is formed in the light-transmitting glass wall and located at the focus position of the convex water permeable mirror. The method comprises the following steps: arranging a circular base; arranging a heat storage system; erecting a main body structure; laying a thermal insulation layer and assembling main body structure accessories; and installing a convex water permeable mirror system and a refraction film system. The obtained product can gather the sunlight energy and uniformly distribute the sunlight energy in the indoor environment, can be used for building heat preservation, and meanwhile solves the problem of indoor heating when no sunlight exists at night. In addition, the problem of indoor ventilation can be solved through hot-pressing ventilation, and the effects of evaporating condensate water and humidifying air are achieved.