527results about How to "Improve output efficiency" patented technology

The invention relates to an unmanned aerial vehicle multi-modal visual positioning method and system in a GNSS denial environment, and the method comprises the steps: constructing a visual inertial mileage calculation method based on deep learning feature extraction and matching, calculating the relative positioning of an unmanned aerial vehicle, and outputting to obtain high-frequency 6-DoF pose information; performing scene matching of infrared RGB image multi-modal fusion based on the Officient-LoFTR, and obtaining absolute positioning in a world system by solving a relative pose between a current key frame picture and a matched satellite image; a factor graph optimization mode is adopted to carry out self-adaptive weight information fusion according to the confidence coefficient of absolute positioning and relative positioning under a world system, and 6-DoF pose information with high frequency and higher precision is output; based on high-frequency and higher-precision 6-DoF pose information, after the unmanned aerial vehicle is recovered, all aerial images and satellite images are fused and updated. The system comprises a calculation module and a fusion updating module. According to the invention, more accurate and high-frequency pose output can be provided.

The invention is applicable to the field of photovoltaic technology, and provides a solar cell, a cell assembly and a photovoltaic system.The solar cell comprises a silicon substrate, the silicon substrate is provided with a backlight face and a light facing face which are oppositely arranged, a plurality of grid lines and a plurality of microarrays are arranged on the backlight face side by side in the first direction, and the grid lines extend in the second direction; the microarray comprises a plurality of arranged microstructure units, an included angle is formed between the microarray and the grid line, and the first direction is crossed with the second direction; the length of the silicon substrate in the second direction is L, the range of the two side edges, parallel to the first direction, of the silicon substrate extending towards the center line by L / 9 is an edge area, the included angle in the edge area is alpha, the included angle in the area close to the position of the center line is beta, and the angle of alpha is larger than that of beta. The absorption path of light in the silicon wafer is increased, the diffuse reflection effect of reflected light of backlight surfaces in different areas is promoted, and therefore the absorption efficiency of the light is improved.

The invention discloses a rhombus constraint-based wind turbine generator layout optimization method, which is characterized in that a wake flow analysis model with higher precision, namely an Ishihara-Qian wake flow model, is used for evaluating the generating capacity of a wind power plant, and the model can be used for efficiently and accurately predicting the wind speed loss and the additional turbulence intensity of a fan wake flow region; and meanwhile, a rhombus constraint strategy is adopted to represent the fan spacing constraint, so that the constraint of the target function is constructed, the rhombus constraint can make full use of the internal space of the wind power plant with dominant risks, and the energy output efficiency is improved while safety and maintenance convenience are kept.

The invention discloses a puncture path planning method and system, and aims to quickly calculate optimal puncture path information based on optical and computer rendering thoughts so as to provide reference for medical staff and provide an auxiliary means for clinically acquiring information. The method comprises the following steps: constructing a three-dimensional model through a medical image; the method comprises the following steps: defining organs and tissues as units with incompletely same light absorbance, and assigning light absorption coefficients to each unit according to whether a biopsy needle is allowed to pass or not and the risk degree of puncture; a light source is arranged in a puncture target area, gray information of the skin surface is obtained by analyzing the light absorbance on different paths, and the gray information is used for feeding back the recommendation degree of each puncture starting point. According to the method, selection of the puncture path is converted into searching of the optimal puncture starting point, a brand-new concept of planning and recommending the puncture path is provided by combining the optical propagation principle, and the position information of the optimal puncture starting point can be visually displayed and is more comprehensive and reliable.

The present invention discloses a gas power device, comprising an outer ring and a core body, wherein at least one-step secondary flow channel is arranged between the nozzle and the exhaust port on the outer ring surface of the core body, gas enters from the air inlet channel, is ejected step by step through the nozzle of the core body and the secondary flow channel, acts on at least two driving recesses on the circumference of the outer ring, generates thrust on these driving recesses, drives the outer ring to rotate and do work, realizes power output, and finally, the gas is discharged through the exhaust port of the core body via the exhaust channel.

The invention provides needle cleaning abrasive paper, a needle cleaning device and testing equipment. The needle cleaning abrasive paper comprises a buffer layer, a grinding layer and a plastic needle layer which are sequentially arranged from bottom to top. According to the technical scheme, the buffer layer, the grinding layer and the plastic needle layer are sequentially arranged from bottom to top, and the buffer layer is used for buffering contact force; the grinding layer is used for grinding and cleaning the tip of the probe; the plastic needle layer is used for cleaning and grinding the two sides of the tip of the probe and reducing the diameter of the tip; the needle is molded in the test production process, so that the loss of the needle in the additional maintenance process is reduced, and the service life of the needle card is prolonged; meanwhile, needle molding and cleaning are integrated, needle cleaning abrasive paper does not need to be replaced frequently in the production process, and the output and production efficiency is improved.

The invention discloses a low-voltage gallium nitride power amplifier based on second harmonic suppression. The low-voltage gallium nitride power amplifier is used for solving the technical problem that the overall efficiency of a radio frequency system is low due to an existing radio frequency power amplifier. The amplifier comprises an input stage circuit, an input stage low-voltage gallium nitride transistor, an intermediate stage circuit, an intermediate stage low-voltage gallium nitride transistor, an output stage circuit, an output stage low-voltage gallium nitride transistor group, a drain bias capacitor, a drain bias voltage port and a secondary harmonic suppression output matching network, by arranging an input-stage low-voltage gallium nitride transistor, an intermediate-stage low-voltage gallium nitride transistor, an output-stage low-voltage gallium nitride transistor group, a secondary harmonic suppression output matching network and a corresponding connection relationship, the secondary harmonic suppression output matching network can be used for suppressing a low-voltage gallium nitride transistor on the basis of a low-voltage gallium nitride process technology. Harmonic suppression is directly carried out on the second harmonic, so that the output power and the power additional efficiency of the radio frequency power amplifier are improved, and the overall efficiency of a radio frequency system is improved.

The invention discloses a growth method for improving epitaxial doping concentration stability of silicon carbide and an epitaxial wafer. The growth method comprises the following steps: S1, performing high vacuum pumping and low-temperature baking treatment on a reaction cavity; s2, conveying the substrate into a reaction cavity, heating and depressurizing the reaction cavity, and introducing hydrogen into the reaction cavity; s3, introducing hydrogen and HCl gas into the reaction cavity, and performing in-situ etching on the silicon carbide substrate; s4, introducing hydrogen and a carbon source into the reaction cavity, and adjusting the temperature of the reaction cavity to an epitaxial temperature; s5, introducing a silicon source, a carbon source, hydrogen and a doping source ammonia gas into the reaction cavity, and growing a buffer layer; s6, increasing the introduction amount of the silicon source, the carbon source, the hydrogen and the doping source ammonia gas, adjusting the carbon-silicon ratio, and growing a main epitaxial layer; s7, introducing hydrogen into the reaction cavity, and performing low-temperature baking and etching; and S8, after epitaxial growth is completed, closing the reaction gas, cooling and boosting, and taking out the silicon carbide epitaxial wafer.

The utility model relates to the technical field of automatic fertilizer dissolving, in particular to a water and fertilizer integrated anti-blocking continuous automatic fertilizer dissolving device which comprises a base, a fertilizer storage hopper is fixedly connected to one side of the top face of the base, lifting equipment is fixedly connected to the output end of the bottom of the fertilizer storage hopper, and a feeding pipe is fixedly connected to one side of the top of the lifting equipment. The bottom of the fertilizer storage hopper is communicated with the feeding pipe through lifting equipment. The stirring device has the advantages that the driving bevel gear is driven by the driving motor to rotate, and the first driven bevel gear and the second driven bevel gear can be simultaneously driven to rotate in opposite directions, so that the rotating sleeve and the central rotating shaft rotate in opposite directions, and the plurality of stirring blades and the filtering cage rotate in relative height; and meanwhile, the filter cage rotating at a high speed can quickly throw out the dissolved solid waste, so that the output efficiency is improved, the waste is prevented from being non-uniformly dissolved, and blockage is prevented.

The invention relates to the technical field of food transportation, in particular to safe transportation equipment for healthy food conveying, which comprises a mounting frame, a support frame, a first conveying roller, a servo motor, a mounting sleeve, a second conveying roller, a conveying belt and the like, the support frame is connected to the mounting frame, and the first conveying roller is rotatably connected to the upper part of the mounting frame; a servo motor is connected to the mounting frame, an output shaft of the servo motor is connected with the first conveying roller, a mounting sleeve is slidably connected to the upper portion of the mounting frame, a second conveying roller is rotatably connected into the mounting sleeve, and a conveying belt is wound around the second conveying roller and the first conveying roller. The output shaft of the servo motor can drive the conveying belt to rotate, the conveying belt can convey healthy food to a designated position, the movable end of the air cylinder extends to enable the baffle to rotate downwards to be in a horizontal state, the baffle is unfolded, workers can take down the conveying belt conveniently, the conveying belt is convenient to replace, and therefore the output efficiency can be improved.

The invention provides a red laser based on a perovskite structure and a preparation method thereof, and belongs to the field of semiconductor quantum dot lasers. The red light laser sequentially comprises a reflecting layer, a P-surface electrode, a hole transport layer, a perovskite active layer, an electron transport layer and an N-surface electrode from bottom to top, the reflecting layer is formed by alternately stacking HfO2 layers and SiO2 layers; the hole transport layer is formed by doping a scandium element into nickel oxide; and the perovskite active layer is a CsPbBr12 / PbSe heterojunction layer. According to the laser, the carrier transmission efficiency of the perovskite quantum dots in the active area is improved, and the output power and efficiency of the red laser are improved; an F-P cavity mode is used as a resonant cavity, and the output power of a laser beam is improved by increasing oscillation in a working medium. The red light laser has the advantages of being simple in structure, simple in preparation method, good in heat dissipation, high in luminous efficiency, high in photoluminescence intensity, low in threshold current, high in output power and the like.

The invention belongs to the technical field of biology, and discloses a controllable multi-channel three-dimensional dynamic culture system for simulating a cell mechanical microenvironment, the controllable multi-channel three-dimensional dynamic culture system comprises a driving platform, a flexible driver and a cell culture box, the flexible driver is provided with a planar substrate and an outer wall provided with a periodic protrusion structure, and is provided with a hollow structure serving as an air chamber; one end is connected with the air path module through an air hole channel, and the other end is sealed; a groove is also formed in the outer surface of the planar substrate and is used for accommodating cells to be cultured; the flexible driver air chamber can be pressurized or depressurized, so that the bending degree is enhanced or reduced according to the preset frequency, and a mechanical microenvironment is generated. The three-dimensional dynamic culture system constructed by the invention can simulate a cell mechanical microenvironment, realizes dynamic culture of cells, and promotes cell proliferation and expression of specific proteins. In addition, the system can be conveniently designed into multi-channel culture, and has a very good practical application prospect.

The utility model relates to an actuator, an active suspension and a vehicle, and the actuator comprises a driving module which comprises a stator, a rotor and a motor housing; the motion conversion assembly comprises a lead screw shaft and a nut; and the axial bearing is used for limiting the rotor in the axial direction, and the driving module is used for driving the nut to rotate so as to drive the lead screw shaft to drive the wheel to linearly move in the height direction. A rotor of the driving module drives a nut to rotate, the nut drives a lead screw shaft to drive a wheel to linearly move in the height direction, and then the height of the whole vehicle is adjusted. The structure is simple, the machinability is high, and disassembly and assembly are convenient; the transmission form of rotation and linear motion is more space-saving, and the control precision is higher; the axial bearing can play a role in limiting the rotor in the axial direction, so that the axial load borne by the rotor is resisted, the displacement of the rotor in the axial direction is avoided, the relative positions of the rotor and the stator in the axial direction are ensured, and the output efficiency of the motor is improved.

According to the new electric energy storage and transportation medium, the manufacturing method thereof and the special non-combustible and non-exhaust engine, the key point is that calcium oxide serving as the new electric energy medium has obvious economic and technical advantages, is solid and stable in property, can be stored and transported for a long time, has the energy density far higher than that of methanol, natural gas and hydrogen, is non-toxic, has no carbon footprint and heavy metal in the whole life cycle, and is rich in raw materials and low in manufacturing cost; the system is suitable for long-time storage and long-distance transportation of distributed photovoltaic and wind power, is widely applicable to scene industries, and is convenient to popularize and promote. Work substances such as calcium oxide, ammonia gas and water used by the non-combustible and non-exhaust engine can be recycled in the system, no tail gas residue is discharged, no waste is generated, and zero pollution is achieved. The energy utilization efficiency of the machine is far higher than that of an existing internal combustion engine, high-pressure and high-temperature acting gas ammonia gas is generated in a non-burning explosion and non-air-compressor compression mode, and no combustion process exists in the whole process. And a solid technical foundation is laid for early realization of a dual-carbon standard reaching task.

The invention relates to the technical field of steam generators, in particular to a vertical steam generator evaporation structure which comprises an inner evaporation frame, a steam collecting box and two outer evaporation frames, the two outer evaporation frames are fixedly installed at the front end and the rear end of the inner evaporation frame respectively and communicate with the inner evaporation frame, and the steam collecting box is arranged in the inner evaporation frame. The evaporation inner frame comprises two energy-saving outer frames located on the outer side and a plurality of energy-saving inner frames arranged between the two energy-saving outer frames. Compared with the prior art, by means of the energy-saving outer frame and the energy-saving inner frame in the evaporation inner frame, a good smoke flow channel can be formed, waste heat of high-temperature smoke generated after combustion can be effectively utilized, the temperature of exhausted smoke is effectively reduced, fuel energy is saved, the evaporation amount of steam is greatly increased in a limited space, and the energy-saving effect is good. The steam output efficiency is improved, and the problem that the size of the steam generator is too large and too high due to the fact that the height of a traditional vertical steam generator needs to be increased can be solved.

The invention provides a higher harmonic suppression structure, a radio frequency power amplifier and a method, and belongs to the technical field of signal transmission equipment.The higher harmonic suppression structure comprises a first inductor, a second inductor, a first capacitor and a second capacitor, the first end of the first inductor is used for being connected to the output end of the radio frequency power amplifier in parallel, and the second end of the second inductor is used for being connected to the output end of the radio frequency power amplifier in parallel; the second end of the first inductor is connected with the first end of the first capacitor, the second end of the first capacitor is grounded, the first end of the second capacitor is used for being connected to the output end of the radio frequency power amplifier in parallel, the second end of the second capacitor is connected with the first end of the second inductor and is grounded, and the first inductor is connected with the second capacitor in parallel. The first capacitor and the second inductor are connected in parallel, parameters of the first inductor, the second inductor, the first capacitor and the second capacitor are configured to have high impedance characteristics for higher harmonic signals, and a low-impedance path is provided in a loop to guide the higher harmonic signals to the ground.

The invention discloses a main distribution micro multi-level collaborative optimization regulation and control method and system adapting to non-smooth characteristics. The method comprises the following steps: constructing a converter equivalent model and a power grid topological relation according to power grid measurement data; obtaining a distributed energy three-phase reactive power piecewise function based on the converter equivalent model and a droop control principle, and performing approximate fitting by using a fitting function to obtain a droop control function; micro-grid decoupling is realized by using a node replication method and a micro-grid adjacent relation; constructing a multi-level collaborative optimization scheduling model by using a droop control function, micro-grid decoupling and an optimization objective function; and outputting a main and distribution micro-grid regulation and control strategy by using an interior point method according to the real-time data of the power grid and the multi-level collaborative optimization scheduling model in combination with a time sequence consistency strategy. The method has the advantages that it is ensured that the final regulation and control result is based on the characteristics of the distributed energy and the global characteristics of the distributed energy while the iterative calculation amount is reduced, and both pertinence and efficiency are considered.

The invention relates to the technical field of permanent magnet motor rotors, in particular to a permanent magnet motor rotor structure capable of preventing flux leakage and adjusting dynamic balance, which comprises a rotating shaft and a rotor core fixed on the rotating shaft in a penetrating manner, a plurality of punching sheets are fixed on the rotor core, a plurality of groups of V-shaped holes are uniformly distributed in the punching sheets along the circumference, permanent magnets are arranged in the V-shaped holes, and the included angles of the V-shaped holes face the peripheries of the punching sheets; the two ends of the punching sheet are fixedly provided with rotor end plates made of a non-magnetic-conductive material, the rotor end plates are provided with mounting holes, the mounting holes and the V-shaped holes are the same in shape and position, and the mounting holes are internally and fixedly provided with stop blocks made of a non-magnetic-conductive material; the rotor end plate is also detachably connected with a trapezoidal plate made of a non-magnetic material, and the trapezoidal plate covers the mounting hole. End magnetic isolation and dynamic balance adjustment technologies are integrated, magnetic flux density distribution can be optimized, and magnetic resistance changes are reduced; and meanwhile, the dynamic balance adjustment convenience in the manufacturing process is improved, and the motor performance is optimized.

The invention relates to a small-pixel-size infrared detector reading circuit with a self-adaptive integrating capacitor, and belongs to the technical field of infrared detector reading circuits. According to the circuit, the NMOS variable capacitor is adopted to replace a traditional capacitor, and the characteristic that the capacitance value of the NMOS variable capacitor is adaptively adjusted along with the change of light intensity is utilized, so that the condition of supersaturation or underexposure of integral charge quantity is effectively avoided, and the dynamic range of the reading circuit is enlarged. Besides, the circuit adopts a folding cascode operational amplifier, good injection efficiency and linearity are guaranteed, the scheme that four pixels share one CTIA structure in a time-sharing mode is adopted, the layout area of the reading circuit is optimized, and the reading circuit can adapt to infrared detectors with smaller pixels and larger arrays. The circuit is simple in structure and easy to realize, has the advantages of low power consumption, wide dynamic range and the like, and is suitable for the design of an intelligent infrared detector reading circuit with high integration, low power consumption and wide dynamic range.

The invention provides a seismic data output method of a seismic processing interpretation system, and belongs to the field of seismic exploration. The method comprises the following implementation steps: step 1, establishing a processing flow; 2, acquiring parameters input by a user; step 3, filtering data of the elastic distributed data set RDD according to parameters input by a user; step 4, outputting the channel header temporary file and the channel data temporary file in parallel; 5, extracting file header information of the header file from the elastic distributed data set RDD, and writing the file header information into an independent info file; step 6, merging the trace header temporary files to obtain an hdr file as an output file; merging the trace data temporary files to obtain a data file as an output file; and outputting the data file, the hdr file and the info file. According to the invention, the output efficiency of the seismic data is effectively improved.

The application discloses a mouthwash cup, comprising: a cavity with one end open, a water containing space is formed in the cavity; an electrolysis module, comprising a water inlet end and a first output end, a second output end which are independent of each other, the electrolysis space of the electrolysis module is communicated with the water containing space through the water inlet end and the first output end, and the second output end is communicated with the outside of the water containing space to output hydrogen and reduce the consumption of hydrogen on the anode product. The second output end for discharging hydrogen is arranged in the mouthwash cup, the consumption of the reducing substance at the cathode on the anode product is reduced, more required electrolysis products are generated, and the waiting time of the user can be reduced in the scene of cleaning the oral cavity by using the anode product, so that the use experience of the user is ensured.

The embodiment of the invention discloses a stator winding and a motor. The stator winding comprises a plurality of winding branches, wherein each winding branch comprises a wire inlet end and a wire outlet end; wherein the number of winding layers of the winding branches is multiple, the winding branches conduct winding in the stator grooves, the winding mode of the winding branches is a continuous wave winding mode, and the stator grooves at the wire inlet end and the wire outlet end of each winding branch are different stator grooves. According to the stator winding and the motor provided by the embodiment of the invention, the problem of imbalance of inter-phase current can be solved, and the output efficiency is improved.

The invention discloses a novel oil-electricity dual-purpose infinite endurance mini-tiller which comprises a hybrid power mini-tiller body, a connecting module is arranged on the hybrid power mini-tiller body, a hybrid power module is arranged on the connecting module, a rotary tillage device is arranged on one side of the connecting module, mud blocking devices are arranged on the two sides of the connecting module, and a handrail connecting rod is installed on one side of the connecting module. A control module is arranged on the armrest connecting rod; according to the mini-tiller, the fuel engine, the driving motor, the generator and the battery assembly jointly form an oil-electricity hybrid power system, so that the mini-tiller can be driven by using diesel oil or gasoline through the fuel engine; when the mini-tiller is just started, the driving motor is driven by the battery assembly, so that the driving connecting shaft is driven to drive the walking wheels to rotate, larger torque can be obtained, the acceleration is higher when the mini-tiller is just started, and the mini-tiller is switched to the fuel engine to work through the control module; therefore, the high output efficiency can be kept under continuous long-time high-load work.

The utility model discloses a novel hybrid energy storage system, comprising a power generation system connected with a DC bus through a first DC / DC converter; the direct current bus is connected with the hybrid energy storage unit and is connected with a power grid through the DC / AC converter; the hybrid energy storage unit comprises a super capacitor energy storage system, a storage battery energy storage system and a controller; the super capacitor energy storage system is connected with the direct current bus through a second DC / DC converter; the storage battery energy storage system is respectively connected with the super capacitor energy storage system and the direct current bus through a third DC / DC converter; and the controller is respectively connected with the direct current bus, the second DC / DC converter, the third DC / DC converter and the super capacitor energy storage system. According to the utility model, the advantages of the super capacitor energy storage system and the storage battery energy storage system are fully exerted, the service life of the whole energy storage system is prolonged, and the efficiency, stability and reliability of energy storage and output are improved.

The invention belongs to the field of semiconductor integrated circuit design, and particularly relates to a single-ended power supply asymmetric four-path output power synthesis circuit, which adopts a single power supply to supply power, and comprises a power amplifier unit module for amplifying a power signal; the first combining module is connected with the power amplifier unit module and is used for combining the output of the power amplifier unit module into a first-stage synthesis output X1 and a first-stage synthesis output X2; the second combining module is connected with the first combining module and is used for synthesizing the first-stage synthesis output X1 and the first-stage synthesis output X2 into second-stage output; the matching network is used for receiving the second-stage output and outputting the second-stage output after processing; based on an impedance conversion matching synthesis technology, a four-path two-stage synthesis architecture is adopted, and a single power supply is adopted for power supply.

This invention relates to the field of new energy and discloses a highly selective photocatalytic method for producing acetone from methane. The method includes: placing a transparent substrate coated with a photocatalyst in a photocatalytic reactor, adding liquid water, introducing methane gas to purge air, sealing the photocatalytic reactor, and conducting a gas-solid two-phase photocatalytic reaction under light irradiation and heating at 50-100°C to generate a liquid oxygen-containing organic compound, primarily acetone. The photocatalyst is BiVO4, ZnO, or a modified photocatalyst based on morphology control, surface modification, semiconductor composite, or elemental doping of BiVO4 or ZnO. This invention uses methane and water as raw materials, reacting with a photocatalyst in a gas-solid two-phase reaction to produce a liquid oxygen-containing organic compound, primarily acetone, with high acetone yield and selectivity. This invention has advantages such as low requirements for the reaction environment, simple and environmentally friendly process, and low cost.

The utility model relates to the technical field of linear transmission, in particular to a linear motor with a marble base, which comprises the marble base, two groups of guide sliding rails, a stator magnetic block, a rotor assembly and a sliding seat, the two sets of guide sliding rails are installed on the two sides of the sinking groove respectively, the multiple stator magnetic blocks are continuously arranged in the length direction of the sinking groove, the sliding seat is provided with sliding blocks, the sliding blocks are arranged on the guide sliding rails in a sliding mode, a placement groove is formed in one face of the sliding seat, the placement groove and the sinking groove are oppositely arranged, and the rotor assembly is installed in the placement groove. And the stator magnets are arranged opposite to the stator magnets. According to the utility model, the motor can still maintain high precision and stable performance during high-speed operation. The stability not only prolongs the service life of the motor, but also ensures that the motor can exert the optimal performance under various working conditions.

The utility model provides a steam generator and an air fryer, and relates to the technical field of cooking equipment. The steam generator includes: an evaporation tube; the heating pipe and the evaporation pipe are arranged side by side; the switch assembly is connected with the first port of the evaporation pipe; the heating tube is further used for heating the triggering assembly, the triggering assembly can execute triggering action according to the temperature of the triggering assembly, and the triggering action is used for triggering the switch assembly to open the first port.

The invention discloses high-dosage rubber powder modified asphalt and a preparation method thereof, and the rubber powder modified asphalt is prepared by adding 22-30 parts by weight of modified rubber powder into 100 parts by weight of road petroleum asphalt, the modified rubber powder is prepared from the following components in parts by weight: 85 to 95 parts of common rubber powder, 3 to 6 parts of phenolic resin, 0.6 to 1.2 parts of microcrystalline wax, 2 to 5 parts of naphthenic oil, 0.2 to 0.6 part of antioxidant and 0.2 to 0.6 part of EVA (Ethylene Vinyl Acetate). The preparation method comprises the following steps: (1) preparing the modified rubber powder; and (2) preparing the modified asphalt cement. According to the invention, co-melting and blending of the rubber powder and the asphalt are improved, the mixing amount of the rubber powder in the rubber asphalt can be obviously increased, the pavement and durability are greatly improved, the production cost and environmental pollution of the asphalt mixture are effectively reduced, and the asphalt mixture has economic and social double benefits, is simple in preparation process and has relatively high practical application value.

The utility model provides a rotor, a motor, a water pump and a vehicle. The rotor comprises a rotor iron core and magnetic steel elements, the rotor iron core is provided with a plurality of mounting grooves distributed along the circumferential direction of the rotor iron core, each mounting groove is correspondingly provided with one magnetic steel element, and at least part of each magnetic steel element is accommodated in the corresponding mounting groove; and each magnetic steel element is provided with a first chamfered surface and a second chamfered surface on two opposite sides in the circumferential direction of the rotor core. Wherein in any two adjacent magnetic steel elements, the first chamfered surface of one magnetic steel element is correspondingly attached to the second chamfered surface of the other magnetic steel element. The two adjacent magnetic steel elements are attached to each other to eliminate the magnetic gap, so that magnetic leakage of the rotor can be reduced or even avoided, the iron loss of the rotor is reduced, and the output efficiency of the motor and the output efficiency of the water pump comprising the motor are effectively improved.