720results about How to "Low technical cost" patented technology

The invention discloses a frequency offset compensation method, which comprises the following steps that: a base station performs frequency offset estimation on received uplink signals to obtain a frequency offset estimation result, and pre frequency offset compensation is performed on downlink signals according to the frequency offset estimation result; a terminal detects the frequency of the received downlink signals after the frequency offset compensation, the emission frequency of the uplink signals is determined according to the detected frequency of the downlink signals, and the uplink signals are emitted in the determined frequency; and a terminal side performs the pre frequency offset compensation by the same method. The invention also discloses a frequency offset compensation device, which comprises a frequency offset estimation module, a pre frequency offset compensation module and a frequency detection and frequency modulation module. The method and the device can effectively reduce the frequency offset of uplinks and downlinks, perform the frequency offset compensation of the uplinks and the downlinks, and not only reduce the relative frequency offset between the base station and the terminal, but also reduce frequency jump variable when the terminal switches between the base stations, so that both the base station and the terminal can correctly correct the receivedsignals to ensure communication quality.

The invention relates to a process for carrying out metathesis reactions, wherein the process is carried out continuously and a ruthenium-containing catalyst is used.

The invention discloses an optimization method for a speaking time of a barrage in a live website. The optimization method comprises the following steps: receiving a barrage request transmitted by a user who successfully logins to a website studio; judging whether the user has a permission to speak according to the barrage request; if so, then judging the identity of the user according to the barrage request; when the identity of the user is an uncommon user, then transmitting an inform that the speaking time is unlimited to the user, and displaying a barrage content corresponding to the barrage request; when the identity of the user is a common user, then judging whether the user is a top user of the website studio according to the barrage request; and if so, then setting a corresponding limited speaking time for the user according to the ranking condition of the user in the website studio. The optimization method for the speaking time of the barrage in the live website provided by the invention can solve the technical problems in an existing barrage live broadcast platform that malicious users occupy a display area of the whole reviews, thus the use and access of normal users are interfered, and the speaking time of users with a higher contribution degree is limited and the degree of participation of the users is affected.

The invention relates to the technical field of machine learning, and especially relate to a method and a system for integrated machine learning convenient for data analysis personnel to use. The method comprises the following steps: (1) data exploring; (2) data cleaning; (3) feature extraction; (4) feature selection; (5) sampling; (6) model training; (7) model optimization; (8) model combination;(9) model interpretability; (10) nature language processing. The system comprises a data processing module, a feature processing module, a model processing module, and a nature language processing module. The method and the system provide a unified algorithm modeling process for machine learning engineers, students, teachers, and machine learning fans, so that the machine learning engineers, students, teachers, and machine learning fans complete a modeling process by 20% efforts, and concentrate 80% efforts on understanding of business and model application, to deeply understand business andpreferably realize requirements of business personnel on models.

The invention relates to a grain boundary diffusion method for improving properties of sintered NdFeB magnets. The grain boundary diffusion method comprises the following steps of stacking sintered NdFeB magnets and diffusion alloy sheets together and placing in a hot-pressing furnace; vacuumizing the hot-pressing furnace until the vacuum degree reaches a set value, heating the hot-pressing furnace, and when the temperature of the hot-pressing furnace reaches a set value, beginning to exert a pressure and maintaining the pressure and putting the diffused sample into a high-vacuum furnace for annealing, wherein the diffusion alloy sheets are low-melting-point eutectic diffusion alloys and are represented by R-TM, R is one or more of Sc, Y, La, Ce, Pr or Nd and TM is one or more of Ti, V, Cr, Mn, Fe, Co, Ni, Cu and Zn. Compared with the prior art, the sintered NdFeB magnets modified by the pressure diffusion method, which is provided by the invention, have the advantages of large diffusion depth of a diffusion agent, uniform distribution of grain boundary phases, high coercivity and the like, especially, low-melting-point diffusion alloys designed by the invention are free of expensive heavy rare earth element dysprosium and thus the cost of the raw materials is relatively low, the diffusion temperature is low and the energy consumption in the diffusion process is small.

The present invention belongs to a denitration method by utilizing biomass direct combustion and secondary combustion and flue gas recirculating process and its equipment, and relates to a coal powder boiler low NOx combustion process and its equipment. The invented method includes the following steps: making coal powder be passed through the combustor of coal powder boiler and fed into main combustion zone to make combustion and form the flue gas containing NOx; utilizing the mixture of once air and recirculating tail portion flue gas to spray biomass particles into secondary combustion reduction zone and make NOx formed in the main combustion zone be reacted and formed into N2; at the same time make the biomass coke ad NOx produce isophase reduction reaction to form Nz; spraying burning air from upper portion of secondary combustion reduction zone to make non-burnt combustible material be burnt up.

The invention discloses a method and device for digging virtual digital coins in a mining pool, and relates to the technical field of computer social networking services. The method for digging the virtual digital coins in the mining pool comprises the steps that a mining task is allocated to a mining machine; the mining task is executed through the mining machine, and when the Hash difficulty of a dug block is larger than the current network difficulty, the mining pool broadcasts the information in the virtual digital coin transaction network; when the preset number of confirmation numbers is obtained in the virtual digital coin transaction network, feedback information is given. According to the method for digging the virtual digital coins in the mining pool, the requirements of more users are met while the working efficiency is effectively improved.

The invention is directed to an arrangement for the homogeneous illumination of an image plane, preferably for application in a head-up display in a motor vehicle, comprising illumination optics having an array of emitters with a broad emitting characteristic, for example, an arrangement of luminescent diodes (LEDs, OLEDs), an integrator array, and an image-generating element, and the optical axis of an emitter is associated with the mechanical axis of an integrator of the integrator array. According to the invention, at least two microlens arrays are provided for the purpose of achieving an angular homogeneity of the rays exiting from the integrator array on the illuminated area of the image-generating element at the light outlet of the integrator array.

The invention discloses a soil melioration matrix prepared from garden waste and a preparation method of the soil melioration matrix. The soil melioration matrix comprises the following components in parts by weight: 0.05-0.08 part of garden waste subjected to fermentation treatment by a microorganism bacterium agent, 0.01-0.03 part of natural mineral and 0.005-0.01 part of polymaleic anhydride. According to the invention, the soil melioration matrix is added to saline soil, so that the physicochemical property of soil can be improved, the porosity is increased, the permeability is strengthened, the soil structure is improved, and the salt-obstruction and fertilizer conservation effects are remarkable.

In a system for a motor vehicle for heating and / or cooling a battery and a motor-vehicle interior, comprising a coolant circuit which is coupled thermally to the battery, a refrigerating circuit with a condenser, a compressor, a first evaporator for cooling the motor-vehicle interior and a second evaporator for cooling the battery. The second evaporator is thermally coupled to the coolant circuit via an evaporator heat exchanger and a surrounding-air heat exchanger is coupled thermally to the coolant circuit for the transmission of waste heat of the battery to the surrounding air. The waste heat of the battery is used to heat the motor-vehicle interior. The evaporator heat exchanger is provided with at least one device for transmitting heat from the evaporator heat exchanger to the surrounding air and / or the motor-vehicle interior, for transmitting waste heat of the battery to the surrounding air and / or the motor-vehicle interior.

The invention provides a high-practicability, high-efficiency and low-cost on-line queuing length detection method based on floating vehicle data. The method comprises the following steps of: 1, matching the current position of a vehicle with an electronic map according to positioned information of a global positioning system (GPS); 2, counting parking times according to a preset time interval, a counting interval and a parking point; and 3, estimating a queuing length, and adding limits of error for correction.

An object of the present application is to provide a method and a device for controlling vehicle travel, wherein the method comprises: identifying a traveling vehicle in a target area; acquiring vehicle environment information of the traveling vehicle in the target area; and based on the vehicle environment information, The vehicle-mounted terminal of the traveling vehicle transmits traveling instruction information. Compared with the prior art, the present application does not need to rely on the deployment of a complex and accurate sensing device on a traveling vehicle, even if only a few sensing devices are deployed on the traveling vehicle, or even deployed without deployment The device based on the present application can still achieve accurate control of the running of the vehicle in the target area. Therefore, the present application has less modification to existing vehicles and low power consumption of the vehicle, thus bringing about the overall technical costs reduce.

The invention relates to a combusting control device of micro gas turbine and the control method. The combusting control device identifies parameters of gas turbine on line and control them in time. The control method makes use of the combination of conventional PID control and intelligent fuzzy control theory so that the control device has on-line parameter self-tuning function, which comprises initialization and self-check for control device, combustor ignition, power closed-loop adjustment, shut-down control and on-line monitoring index of gas turbine function. The invention is provided with high control accuracy, safety, stability and low development cost.

The invention belongs to a nondestructive detection technology and relates to an industrial scale ultrasonic automatic scanning and imaging detection device used for large-scale structures made of composite materials and metal materials in the fields of aviation, aerospace, electronics, weapons, ships, metallurgy, iron and steel, transportation, construction and the like. The detection device comprises an ultrasonic automatic scanning system, an ultrasonic automatic scanning control and imaging system and a multi-channel ultrasonic system. The design according to the invention adopts a multi-axis parallel numeric control upward floating type super-static steady scanning mechanism and an ultrasonic flexible self-adaptive tracking array acoustic scanning technology, thereby greatly improving the ultrasonic automatic scanning and imaging detection efficiency and the imaging quality of the large-scale structures, realizing the industrial scale high-efficient ultrasonic automatic scanning and imaging detection of the large-scale structures made of the composite materials and the like in different specifications and enabling the detection resolution and a surface blind zone to achieve 0.13mm; and when 20 channels are detected, the efficiency is improved by at least 50 times compared with the manual scanning detection efficiency, and is improved by 20 times compared with the traditional single-channel ultrasonic automatic scanning detection.

The invention relates to a method for preparing graphene / polyaniline laminated films on basis of a layer-by-layer self-assembly technique and belongs to the technical field of composite material preparation. The method includes steps of treating a substrate; soaking the treated substrate in a graphene dispersing agent for a period; taking the substrate out of the graphene dispersing agent and cleaning the substrate with deionized water; soaking the cleaned substrate into polyaniline solution for a period and then taking out the substrate and cleaning the same again; and repeating the steps above to obtain uniform graphene-polyaniline laminated films having regular layer structures. The conductive graphene / polyaniline laminated films prepared by the method are uniform, regular and ultrathin and have controllable structures and properties. The method can be carried out with low-cost and simple equipment under mild conditions, and can be used for the fields of sensors, supercapacitors and the like.

The invention discloses a multi-person posture estimation method based on adversarial learning. The multi-person posture estimation method comprises the following steps: employing a public data set with a multi-person key point coordinate label as a training set, and carrying out the edge information enhancement preprocessing of a training set image; preprocessing the key point coordinate tags inthe training set, and making a corresponding key point hotspot map and an overall skeleton hotspot map; constructing a double-branch key point feature extraction sub-network; constructing an A-HPose network generator part; constructing an A-HPose network discriminator part; performing relay supervision loop training on the A-HPose network by using the training set to obtain network model parameters; and carrying out post-processing on the network output hotspot map, carrying out search classification on key points in the key point hotspot map according to the skeleton hotspot map to obtain a key point position of each person in the plurality of persons, and estimating the postures of the plurality of persons. The multi-person posture estimation method has the beneficial effect of quickly and accurately detecting human body key point features.

A BOSA (Bi-Di Optical Subassembly) optical structure used for a high-speed receiving and transmitting system comprises a shell; the shell is internally provided with a transmitting-end TOSA optical structure and a receiving-end ROSA optical structure; the transmitting-end TOSA optical structure comprises a wavelength division multiplexing device (MUX), an isolator and a receiving collimator; and the receiving-end ROSA optical structure comprises a wavelength division demultiplexing device (DEMUX) and a second collimator. The BOSA (Bi-Di Optical Subassembly) optical structure used for the high-speed receiving and transmitting system is characterized in that the shell is internally provided with a baffle; the baffle separates the transmitting-end TOSA optical structure and the receiving-end ROSA optical structure; the transmitting-end TOSA optical structure also comprises a first rhombic prism bending a beam emergent from the isolator to the receiving collimator; and the receiving-end ROSA optical structure also comprises a second rhombic prism bending a beam emergent from the second collimator to the wavelength division demultiplexing device. by adopting the micro optical structure design, beam insert loss can be greatly reduced, the coupling efficiency is improved, power consumption is reduced, and long-distance transmission of optical signals is facilitated.

The invention relates to a flexible organic light emitting diode device based on a graphene composite anode. The flexible organic light emitting diode device comprises a flexible substrate (1), an anode (2), a hole injection layer (3), an organic functional layer (4), an electron injection layer (5) and a cathode (6), wherein the anode (2) is the graphene composite anode and comprises a graphene thin film and a metal coating. According to the flexible organic light emitting diode device, the anode of the graphene thin film is improved, so that the organic light emitting diode anode with excellent transmittance and sheet resistance can be obtained, and the flexible organic light emitting diode device is good in bendability and weak in microcavity effect. By means of the flexible organic light emitting diode device, the problem that the organic light emitting diode device is difficult to manufacture due to high sheet resistance of the graphene anode is solved, the improvement of performances of the flexible organic light emitting diode device is facilitated, and the application of the graphene anode to the organic light emitting devices is accelerated.

The invention provides a current limited soft connecting / disconnecting device. The device is characterized in that a first winding L1 of a tight coupling double-winding reactor is connected with a first circuit breaker K1 in series, and then is connected with a second winding L2 in parallel; a single branch winding can be connected and disconnected by adopting a circuit breaker with a breaking capacity of 50 percent of short circuit current; after the first winding L1 is disconnected, the reactance of the tight coupling double-winding reactor is increased fast, and the short circuit current of the system is reduced. As the reactance values of various branch windings of the tight coupling double-winding reactor are rationally designed, the tight coupling double-winding reactor can be operated in small reactance and affects the system operation little when the system runs stably; while when the short circuit failure exists, the reactance value of the tight coupling double-winding reactor is increased to a rated reactance of the system, if the system is in a temporary fault, a second circuit breaker K2 is not needed to be disconnected; after the first circuit breaker K1 automatically switches on again, if the short circuit current of the system still exceeds the standard, the first circuit breaker K1 and the second circuit breaker K2 are disconnected in sequence.

The invention discloses a nonlinear tunable mass and liquid damper used by combining a tunable mass damper and a tunable liquid damper through nonlinear springs. The nonlinear tunable mass and liquid damper comprises a solid mass block, a cavity, internal viscous liquid, a plurality of universal wheels, a preserved hole and a nonlinear spring device. The solid mass block and a closed shell outside the solid mass block serve as a center structure. The viscous liquid with a certain volume is added in the cavity and can circulate in the reserved hole in the mass block. The center structure is connected with baffles or walls on the periphery through the four sets of nonlinear springs outside the cavity. Rotating shafts are arranged at the joints between the nonlinear springs and the baffles or walls so that the nonlinear springs can horizontally rotate. The universal wheels are arranged at the bottom of the center structure so that the damper can freely move in the horizontal plane. According to the working principle, energy input into a building through an earthquake or / and wind vibration is dissipated by means of the mass of the solid block, the non-linear springs and friction force provided when the viscous liquid flows through the small hole in the solid block. The nonlinear tunable mass and liquid damper integrates the advantages of the tunable mass damper and the tunable liquid damper, is installed on the top of a high-rise building, and is simple and reliable in structure, low in manufacturing cost and capable of achieving the good damping effect.

The invention relates to a micro fuel gas turbine technology, whose structure includes turbine burning controller and control method. The controller includes PUT, detecting unit, output unit, photo-electricity coupling unit, and driving unit. The control method is realized by computer program module that includes system initialization, self-testing, burner firing, power closed loop adjusting block, stop and turbine capability index real time monitoring module. It adopts neural network PID controller adjusting method. It improves control accuracy, decreases technology cost and increases the stability and safety of the system.

The invention relates to a method for separating a base plate and a semiconductor layer. The method is characterized in that a pattern silicon dioxide layer is formed between a temporary base plate and the semiconductor layer; then, the temporary base plate is separated from the pattern silicon dioxide layer by a secondary wet type etching way. The temporary base plate is removed by using the secondary wet type etching way, thereby avoiding damaging the structure of the semiconductor layer by using a the laser lift off (LLO) method. In addition, by utilizing the secondary wet type etching method, the manufacture process step is simpler, and the technical cost is decreased. On a vertical semiconductor element, the light emitting benefit of the element is increased due to the irregular surface formed by a manufacture process. In addition, by utilizing the wet type etching in the manufacture process, the batch amplification can be increased, and the cost of the manufacture process is decreased.

The invention discloses a fault diagnosis apparatus and method of a battery heating system. The fault diagnosis apparatus comprises a battery charging system, the battery heating system, a battery management system. The battery charging system is used for charging a battery pack in the battery charging system. The battery heating system is connected with the battery charging system and is used for heating the battery charging system when the temperature of the battery charging system does not satisfy a preset charging condition. The battery management system is connected with the battery heating system and is used for detecting whether the battery heating system is normal or not, and if not, disconnecting the battery charging system and the battery heating system and diagnosing the fault of the battery heating system. The fault diagnosis apparatus may diagnose the fault position of the battery heating system when a battery system is not disassembled and determine whether the fault is caused by the abnormality of a heating circuit in the battery heating system, and may improve the safety performance of the battery system and prolong the service life of the battery system by regularly detecting the potential safety hazards of the battery heating system.

The invention relates to a deep treatment method for industrial wastewater through natural pyrite catalyzed H2O2 oxidation. The deep treatment method specifically comprises the following steps: pretreating natural pyrite, adding wastewater into a reactor, adjusting the pH value to be 8-10, adding the pretreated natural pyrite, adding nitrilotriacetic acid, fast stirring, adding a hydrogen peroxide solution, after reaction under stirring, adding a FeCl3 solution to control the mass ratio of pyrite and Fe (III) to be 10:1, adding hydrogen peroxide, continuing the reaction, and standing for precipitation, wherein residual mineral can be recycled; introducing air into supernatant separated through precipitation for secondary oxidation while keeping dissolved oxygen in the water to be above 3ppm, after sufficient aeration, adding polyacrylamide for coagulation treatment, and after standing for precipitation, discharging effluent; carrying out water quality analysis on a treated water sample to assess the treatment effect. By a simple way and various synergistic effects, the deep treatment method provided by the invention changes the generation way of Fenton reaction, significantly increases the reaction reactivity, expands the applicable pH range of the wastewater, improves the utilization efficiency of H2O2, and reduces the cost of technology, thus being an economical and efficient wastewater deep treatment technology.

The invention discloses a method for detecting an object to be detected by using an SPR biosensor. The method uses a biotin-streptavidin-magnetic particle as a signal reporting molecule which can amplify a signal of a hybridization result; therefore, the problem that marking of a probe or an object to be detected before hybridization influences natural binding of biological molecules is avoided, the requirement of improving detection sensitivity of the SPR biosensor is realized, and generated signals are stable and are easy to detect, which enables result detection and analysis to be substantially simplified. According to the invention, amplification of a detection signal is realized after hybridization, so variation and variation quantity of SPR signals before and after the detection signal is amplified can be more visually and clearly observed; meanwhile, the biotin-streptavidin-magnetic particle technology is used in the invention, and no expensive detector is needed, thereby reducing technical cost and economic cost needed for enhancing sensitivity of the biosensor.

In the preliminary grinding and finishing of mineral and non-mineral materials, e.g. limestone, cement clinker, blast-furnace slag, old concrete or ashes, the grinding material, usually comprising new and recirculated stock, is fed as a defined and laterally bounded material layer (4) of predetermined thickness from a material-supply container (3), belonging to the comminuting apparatus, by way of a roller-type or rotary-vane feeder (9), which is arranged at the outlet and can be changed in a stepless manner in respect of its rotational speed, onto the vertex of the laterally rimmed (45), driven, bottom roller (1), accelerated to the roller speed and transported continuously into the gap formed (5) with the top roller (2), arranged in an offset manner above the driven roller (1), is subjected to hydropneumatic loading using specific compressive forces of 2 to 7.5 kN / mm and is then deagglomerated within the comminuting apparatus by a preferably high-speed rotary crusher (10). This results in good utilization of energy and in low mechanical structural, servicing and maintenance outlay. Usage over a wide spectrum for comminuting different materials is made possible, and linear throughput and speed behaviour both in partial-load operation and with high mass throughputs can be realized.

The invention discloses a wavelength division multiplexing and demultiplexing optical structure, which comprises a transmitting end optical structure and a receiving end optical structure, wherein the transmitting end optical structure comprises a wavelength division multiplexing device and a first collimator, and the receiving end optical structure comprises a second collimator and a wavelength division demultiplexing device. The wavelength division multiplexing and demultiplexing optical structure is characterized in that the wavelength division multiplexing device and the wavelength division demultiplexing device are combined to a whole body including a glass block, a transmitting end band-pass filter group and a receiving end band-pass filter group, the transmitting end band-pass filter group is arranged on the lower half part of the glass block, and the wavelength division multiplexing device is formed by the transmitting end band-pass filter group and the lower half part of the glass block; the receiving end band-pass filter group is arranged on the upper half part of the glass block, and the wavelength division demultiplexing device is formed by the receiving end band-pass filter group and the upper half part of the glass block; the receiving end optical structure further comprises a rhombic prism capable of turning a light beam emitted by the second collimator to the wavelength division demultiplexing device. According to the wavelength division multiplexing and demultiplexing optical structure, by adopting micro-optics principle design, the insertion loss of the light beam can be greatly reduced, and the coupling efficiency is improved.

Methods, platform serves, and systems of data pushing are provided. A platform server obtains a data pushing request from a third-party server. The data pushing request includes pushing data. The third-party server corresponds to a third-party application, the third-party application including a web application running on a client terminal. The platform server pushes the pushing data to the client terminal via a client / server (C / S) data transmission port of the client terminal. The client terminal parses and pushes the pushing data to the third-party application corresponding to the third-party server by executing a preset callback function.