224results about How to "Easy to engineer" patented technology

The invention relates to a method for improving the partitioned halation of an LED (Light Emitting Diode) backlight source and a control device thereof; the method comprises the following steps: carrying out partitioned statistics according to RGB (Red, Green and Blue) image data, and extracting the calculated value of the partitioned backlight brightness; carrying out neighborhood smooth processing on the calculated value of each partitioned backlight to generate the output value of the backlight brightness; and transmitting the output value of the backlight brightness to a backlight drive module, and driving the LED to be lightened. The device comprises a partitioned backlight value extracting module, a backlight value processing module and a backlight source driving module which are in communication connection in sequence so as to realize the method. In the invention, overlarge brightness difference between adjacent backlight zones is prevented through the smoothing processing on the backlight partition so that the brightness transition of the backlight zone is gentler; therefore, the partitioned halation problem of an LED backlight liquid crystal television can be effectively improved. Simultaneously, the scheme has less influence on the decreasing of brightness without influencing the display effect.

The invention relates to a preparation method of silicon carbide/zirconium carbide composite ceramic, and relates to inorganic nonmetal material composite ceramic. The preparation method comprises the steps of: dissolving bis(cyclopentadienyl) zirconium dichloride with a solvent under the protection of inert atmosphere, and adding liquid hyperbranched polycarbosilane to obtain a mixture A; and distilling the mixture A under reduced pressure under the protection of inert atmosphere to remove the solvent, and carrying out cracking reaction in inert atmosphere to obtain the silicon carbide/zirconium carbide composite ceramic. According to the invention, bis(cyclopentadienyl) zirconium dichloride is used as a zirconium source, and is used for catalyzing the crosslinking reaction of liquid hyperbranched polycarbosilane, so as to increase ceramic yield; zirconium carbide can inhibit the growth of silicon carbide microcrystal grains, and improve high-temperature resistance and oxidation resistance of the composite material; the zirconium content in the composite ceramic can be controlled by controlling the content of bis(cyclopentadienyl) zirconium dichloride in a hybrid precursor; the liquid hyperbranched polycarbosilane/bis(cyclopentadienyl) zirconium dichloride hybrid precursor is free of oxygen, thus the gas escaped in the high-temperature cracking process is reduced; the ceramic has high compactness; and the preparation method is simple to operate, and is easy for engineering.

This invention belongs to a laser radar domain, which relates to a continuous wave frequency modulation cohere laser radar which is on the basis of optical fiber laser device. Optical fiber laser device is used as light source, of which launching wnd links optical fiber coupler. Optical fiber coupler divides energy of light into two parts. Moiety is used as characteristics light, which can be directly inputted in an input end of secondary optical fiber coupler, the other part is inputted in expanding bunch lens device; after expanding bunch lens compresses laser emission angle, direct surveyed area by 2-dimensional scanner; echo-signal is feed-through one end of transmission optical fiber through optical antenna by 2-dimensional scanner, the other end of transmission optical fiber contacts secondary optical fiber coupler by optical fiber amplifier. After echo-signal and characteristics light are combined and interfered to mix frequency by optical fiber coupler, enter monitor component element. Monitor component element can transform and magnify signal photoelectricity, output, post it in computer by collecting card, carry out data processing. This invention has features of small volume, light quality, high integrated degree, good stability, intelligentification and modular.

The invention provides a driving path planning method and device and an automatic steering system, belongs to the field of automobile automatic driving, and aims at solving the problems in existing planning path driving that driving is obstructed or limited by vehicles on the current road segment. The technical key points are that multiple driving paths from the start point to the destination are planned by a background map, and one of the paths is selected for driving. The method is characterized in that a GPS positioning device verifies that the current driving path is a planning path in the driving process; and radar of the vehicle detects obstacles around the vehicle, the detection data are inputted to a grid map in the form of coordinate information, and the optimal path is planned in the form of the grid map. The effects are that path planning in the automatic driving process is realized through seeking of searching of the optimal path on the planning path.

The invention provides a batter pack preheating method and a system thereof. According to an embodiment of the invention, the battery pack preheating method comprises the following steps: one or more single cells of a battery pack is/are selected to form a discharging module; the discharging module is coupled to an input end of a DC/DC module; and an output end of the DC/DC module is coupled to a charging module of the battery pack, and the charging module preheats the battery pack through discharging.

The invention provides a biological method for synthesizing alpha-pinene or beta-pinene from acetyl coenzyme A and a reconstitution cell capable of synthesizing the alpha-pinene or beta-pinene, wherein the acetyl coenzyme A is obtained from a simple starting material like glucose. The method for synthesizing the alpha-pinene or beta-pinene by adopting a biological process comprises the following steps: transferring acetyl coenzyme A acyltransferase, 3-hydroxy-3-methyl glutaryl coenzyme A synthase, hydroxymethyl glutaryl coenzyme A reductase, mevalonic acid kinase, mevalonic acid-5-phosphokinase, mevalonic acid-5-diphosphonic acid decarboxylase, isopentenylpyrophosphate isomerase, geranyldiphosphate synthetase and pinene synthase into an appropriate host cell by adopting metabolic engineering technology, and culturing the obtained reconstitution cell, so that the target product, namely alpha-pinene or beta-pinene can be obtained.

The invention discloses a non-diaphragm upflow type continuous flow bio-electrochemical apparatus for treating difficultly degraded waste water, which relates to an apparatus for treating waste water. The invention is used for solving the technical problems of high cost and low efficiency of BESs. A housing is fixedly connected with a base plate, a lower separator plate, a cathode, an upper separator plate, an anode and a top plate from the bottom to the top. According to the invention, present bio-electrochemical reactors are greatly improved, and according to the characteristics of waste water, the electrode positions are reasonably arranged, thereby pollutants which are difficult to be degraded in water are effectively detoxified at the cathode firstly, then the pollutants in water are further degraded by the effect of anodization, and the difficultly degraded waste water treatment efficiency is improved greatly. In addition, the invention employs a non-diaphragm design, thereby not only reducing internal resistance of the reactor, but also reducing cost, which are beneficial to the extension and engineering of the reactor.

The invention discloses a weight-coefficient-free double-virtual-voltage-vector predictive torque control method for a five-phase permanent magnet synchronous motor. The method comprises the steps: obtaining a current component under a two-phase static coordinate system and a voltage output at a moment k; carrying out delay compensation of a beat to obtain a current component under a two-phase static coordinate system at a k+1 moment; predicting a magnetic flux linkage and a torque at a k+1 moment; predicting a reference voltage vector required at a k+1 moment according to a magnetic flux linkage and torque dead-beat principle so as to select a first virtual voltage vector; and selecting a second virtual voltage vector according to a voltage error tracking principle, respectively calculating the action time of the two vectors, and synthesizing and outputting. On the basis that the original topological structure of the five-phase permanent magnet synchronous motor drive control system is not changed, harmonic waves in the five-phase motor are effectively restrained through the virtual voltage vectors, and the vectors are directly and quickly selected by adopting a dead-beat principle, so that the calculation burden of a traditional model prediction control method is greatly reduced.

The invention discloses a method and a device for measuring optical power parameters on the basis of a crystal resonator. The device comprises the crystal resonator, an oscillation starting circuit and a frequency measuring unit. An input end of the oscillation starting circuit is connected with an electrode of the crystal resonator, an output end of the oscillation starting circuit is electrically connected with the frequency measuring unit, and to-be-measured light beams are incident on a working surface of the crystal resonator. The method and the device for measuring the optical power parameters have the advantages that incident laser light is effectively reflected during application of the method and the device, the requirement on the laser irradiation bearing ability of a measuring system can be lowered, the method and the device can be used for measuring the high-energy laser parameters under long-time emergent conditions, power of the laser light can be converted into frequencies to be measured during implementation, the method and the device are high in measurement precision and resolution by the aid of a modern frequency measuring technology, requirements on measuring parameters of laser light under different power conditions can be met, the method and the device are high in applicability, wide in dynamic range and simple in engineering, the device is compact in structure, and the like.

A single sliding block rolling spray mode variable centroid aircraft model and a designing method for structural layout parameters thereof relate to the field of flight vehicle design, and aim to solve the problems of ablation to an aerodynamic rudder in a conventional hypersonic aircraft and complexity in sliding block layout inside a conventional variable centroid aircraft. The aircraft model provided by the invention comprises two fixed wings, a projectile body, a rolling spray engine and a movable body, wherein the two fixed wings are symmetrically arranged on the two sides of the projectile body; the tip of the cone-shaped body of the movable body is connected with the head of the projectile body through a movably connecting point O1; a guide rail is arranged at the tail end of the projectile body, the root part of the cone-shaped body of the movable body is connected with the O2 point of the guide rail at the tail part of the projectile body in a sliding manner; since the movable body is further expanded to serve as a main body, the mass of the movable body accounts for most part of the mass of the entire system, the projectile body is taken as a driven body, the purpose of maneuvering control can also achieved, the motion of the projectile body can be controlled through an actuator on the movable body; the integral aerodynamic configuration of the projectile body is ensured. The aircraft model provided by the invention is applicable to the field of flight vehicle design.

The invention discloses a method for optimizing general parameters of a control surface transmission mechanism. The method comprises the following steps that analytical expressions of the line rigidity, torsional rigidity, torsion frequency, the steering engine actuator travel original length ratio and the transmission ratio deviation of the control surface transmission mechanism are established; a parameterized ADAMS model of the control surface transmission mechanism is established; the ADAMS model, an input file including input variables, an output file including measurement values and a command file for driving an ADAMS are packaged; optimization goals and constraint conditions are determined; a ModelCenter optimizer and the ADAMS model are used for optimizing the designed distance between a variable rudder shaft and a steering engine support, the length of a rocker arm and the height of the steering engine support with the determined optimization goals and the constraint conditions, and optimized results are obtained. By means of the method, the quick optimization design of the general parameters of the control surface transmission mechanism is achieved, and engineering technicians can conveniently use the method.

The invention discloses a phase-locked-loop-free direct power prediction control method for a three-phase converter. The method is implemented under a synchronous rotating coordinate system, and no phase-locked loop is needed. According to the fact that a control system is delayed by two beats actually, sampling frequency which is two times of carrier frequency is adopted for reducing influences on prediction accuracy of the output power and current of the next beat and simplifying prediction calculation, complex calculation is not needed, the grid connection power, grid connection current and network voltage value of the next beat can be calculated accurately, control precision is improved, and output of a three-phase converter circuit of the next carrier cycle is obtained through calculation. The control method is simple and easy, fixed-frequency phase-locked-loop-free direct power prediction of the three-phase converter can be achieved, and the method is prone to engineering.

The invention relates to an optical network-based automobile electric system. The optical network-based automobile electric system comprises a main optical fiber, a sensor, an optical receiving and transmitting assembly, a gateway and a peripheral assembly of an automobile, wherein an electric signal measured by the sensor can be converted into an optical signal through the optical receiving and transmitting assembly and can be transmitted to the peripheral assembly of the automobile through a main network, the gateway and the optical receiving and transmitting assembly; the peripheral assembly of the automobile comprises an engine ECU (Electronic Control Unit), a transmission system TCU (Transmission Control Unit), a brake system ABS (Anti-lock Brake System), a light control ECU, a door and window control ECU, a power distribution ECU, an antitheft ECU, an SRS (Supplementary Restraint System) ECU, a back-up ECU, an entertainment terminal and a navigation unit. According to the optical network-based automobile electric system disclosed by the invention, an optical control signal can be transmitted through the main optical fiber, not only can the problems of electric short circuit, electromagnetic disturbance and degraded and melt-down circuit be completely avoided by a control circuit, but also various communication protocols including CAN (Controller Area Network), LIN (Local Interconnect Network), FlexRay and MOST (Media Oriented System Transport) can be simultaneously compatible, a video signal can be quickly transmitted, and the requirements on high speed and sharing of information of the automobile can be met.

The invention discloses a double-channel high-precision phase calibration system. The double-channel high-precision phase calibration system is characterized by comprising a calibration signal source,an internal calibration assembly, an analog receiver and an ADC signal acquisition and signal processing system; two paths of calibration signals are output by the calibration signal source to be injected into the internal calibration assembly, the internal calibration assembly outputs the two paths of calibration signals, and the two paths of calibration signals are transmitted to the analog receiver through cables; the analog receiver transmits the received signals to the ADC signal acquisition and signal processing system for processing, and the total phase difference of the two paths of signals is obtained; and meanwhile, the analog receiver is used for returning the partially received signals to the internal calibration assembly along the original path, the internal calibration assembly transmits the returned signals to the ADC signal acquisition and signal processing system, and the phase difference of the cables is extracted. According to the double-channel high-precision phasecalibration method, calibration is carried out on the phase error between the multiple receiving links, the phase error of the connecting cables is eliminated simultaneously, and the calibration precision can reach 0.07 degree.

A method of synthesizing beta-caryophyllene by microbial catalysis and a reconstituted cell capable of synthesizing the beta-caryophyllene are disclosed. Acetyl coenzyme A used in the method is obtained from simple initial materials such as glucose. The method includes: A) a step of constructing the reconstituted cell capable of synthesizing the beta-caryophyllene from the acetyl coenzyme A, wherein the reconstituted cell comprises gene segments comprising acetyl-CoA acyltransferase, 3-hydroxy-3-methylglutaryl coenzyme A synthetase, hydroxymethylglutaryl-CoA reductase, mevalonate kinase, phosphomevalonate kinase, diphosphomevalonate decarboxylase, isopentenyl diphosphate isomerase, geranyl pyrophosphate synthase, farnesyl pyrophosphate synthase, and beta-caryophyllene synthase; and B) a step of culturing the reconstituted cell in a culture medium containing glucose, inducing with a proper inducer, separating and purifying to obtain the beta-caryophyllene.

The invention discloses a recycling processing technology for high-salt wastewater during carboxymethyl cellulose production. The processing technology combines extraction and graded crystallization technologies. In the graded crystalization process, through multi-effect (or mechanical recompression) evaporation crystallization, crude salt is recovered from wastewater and condensate water is evaporated, the condensate water reaches the industrial reuse water standard, and refined salt is prepared from crude salt through washing; and then through cooling crystallization, sodium glycollate crystal is separated out, the crystallization mother liquid is used for a next crystallization process, so that closed cycle is realized. In the above graded crystallization process, ethoxyacetic acid is obtained by performing extraction separation on a concentrated liquid, and the viscosity is reduced. The method is simple in operation, low in cost and high in separation recovery rate. The whole processing technology employs closed cycle, has no pollutants, and is easy for industrialization. The technology helps to solve the high-salt wastewater processing problem in the carboxymethyl cellulose production process, also helps to realize the recycling processing purposes of turning harm into good and changing wastes into valuables, and has substantial economic, social and environment benefit.

The invention relates to an integrated high-salt wastewater MBBR (moving bed biofilm reactor) treatment device which comprises an MBBR aeration tank with a suspended filler and a microbe culture device connected with the MBBR aeration tank, wherein the microbe culture device is arranged inside or outside the MBBR aeration tank; the MBBR aeration tank is used for treating high-salt wastewater, and part of the treated wastewater enters the microbe culture device for halophile flora culture; and the halophile flora cultured by the microbe culture device is used for degrading organic matters in the MBBR aeration tank and subjected to biofilm formation growth on the suspended filler. The integrated high-salt wastewater MBBR treatment device enhances the high-salt wastewater treatment capacity and treatment effect of the MBBR process, and is especially suitable for treating high-salt high-concentration toxic nondegradable high-salt wastewater.

The invention discloses an on-orbit error separation method of a spacecraft guidance tool. According to the difference between a real-time telemetering speed and an exterior measuring rate of a spacecraft, through combination of a least square method and latent root estimation, an error coefficient of a guidance tool is calibrated on orbit in real time and the guidance tool error is compensated. The method solves the problem that the existing guidance tool error separation method produces mismatching of the positions of the spacecraft in air and ground coordinates of the spacecraft, realizes on-orbit real-time calibration of an error coefficient of the guidance tool, utilizes a simple algorithm and is easy to industrialize. Through combination of the least square method and the latent root estimation, confidence of the error coefficient estimation is improved.