188results about How to "Achieve the expected purpose" patented technology

The present invention belongs to the field of computer-aided human face image re-construction technology. The present invention features that human face as model establishing object is first photographed with two, one upper and one lower, stere ovideo cameras to obtain video sequence from the front to the side of the face with unchanged expression; the precise posture parameters in different times are then obtained via autoamtic posture estimating algorithm; after the initiation of model and posture, 3D information are extracted separately from two types of 2D threads including one stereo reconstruction type of the image and the other matching and correcting type of model projection contour and image contour; and the 3D face model is finally established.

Current transformer DC side voltage closed-loop control method of active power filter characterizes in a selective harmonic detect method, which will get two-phase coordinate system current after detecting the N time of harmonic active or reactive DC component and through delay compensated angle variable matrix, and to deduct DC side voltage adjust signal to make the compensate current signal contain a certain basic wave active current component, in which, adjust signal is the difference between the given value of the current transformer DC side capacitance voltage and feed back value of the side capacitance voltage adjusted by an adjuster.

A method for measuring time interval with two stage cascade delay line includes measuring numbers of clock leading edge in time interval to be measured i e cycle number of clock, measuring two time intervals not being complete cycle of front and back time intervals to be measured, sending those less than resolution of first stage relay line to the second stage for further subdivision, calculating out value of time interval to be measured by utilizing measured results. The measuring device is composed of only delay unit and D trigger for both delay lines.

The invention features in as follows. The protection extent of the bit node in the irregular low density parity check (ILDPC) code is higher as the order of the node is increased. Based on the said character, the iterative process of the bit node with high order is ended after the error correction for the bit node with the current order being completed. But, the iterative process for the bit node with low order is continued in order to simplify the calculation complexity of the subsequence iteractive decoding and save the time. The decoded result for the bit node with high order can be magnified for providing more information for the bit node with low order. Comparing with the sum and product decoding method or the minimum sum decoding method, the invention provides the better error correction performance.

In the capacitance tomography system composed of the capacitance sensor array, the electronic measurement circuit and the computer for image formation, the method of principal component analysis is introduced to analyze the normalized value of capacitance measured. These components with contribution rate less than mu are removed from the principal components. The data of principal components withcontribution rate larger than mu are as the input for the forwarding neuron network. The output of the neuron network is the phase concentration. The substance of the principal component analysis is that the normalized sample matrix of the capacitance values measured is transformed to the correlation matrix, from which each eigenvalue and related principal component is obtained.

The character of the invention are as follows. The response mechanism of the TCP protocol is changed to the choice passive response. The sending ned only retransmits the data frames that the receiving end requests for re-transmitting definitely. The following measures change the conservative congestion control mechanism of TCP protocol to the active congestion control mechanism. The size of the slide window is set up as 32bit. When the congestion being detected, the decrement of the congestion window is 2/3 in TCP. In the congestion elusion stage, the congestion window takes on the non-linear growth. The rearward facing explicit congestion indicator is adopted so that the router informs the data-sending end directly that the network is about to be congested.

After selecting BGP route sent from neighbor, border gateway sends an informing message for route selection to sender of route. The message includes target address of selected route and address space of local autonomous system. The sender stores information in received message for route selection to information database of route selection in concentration. Thus, inspection standard for packet address needed for method of filtering packets is generated. Route selection clock is added to informing function of route selection. Through route selection clock setup, sender waits for informing message for route selection form downstream autonomous system and gets information from message. Educational examination of simulation software proves that route selection clock decreases overhead of communication and processing overhead of router effectively under condition of not affecting on convergence rate of selecting information.

The preparation method of submicron high-purity transparent alumina ceramic material includes the following steps: using static pressure process of dry-pressing and cooling, etc. to mould alpha-Al2O3 powder; then pressure-less presintering these blank bodies, its pressure-less presintering temp. is 1200-1350 deg.C, and time is 30-480 min.; placing these presintered blank bodies into thermal isostatic pressing furnace to make after-treatment, its treatment temp. is 1150-1350 deg.C, pressure is 140-190 Mpa, heat-insulating and pressure-retaining time is 30-60 min.; using Ar gas as protective gas, the relative density of obtained ceramic body is greater than 99.9%, finally grinding surface of sintered ceramic body and polishing. Its grain size is less than 1 micro, it possesses high transparence and mechanical properties, can be suitable for making high-voltage sodium lamp tube, high-temp. furnace window and decorative material.

Interactive wire digit multimedia TV broadcast system characterizes that it is one of any broadcast systems of single or two-way, interactive independer of interactive channels. The down-stream interactive signals are applied of the down-stream channel TDS-OFDM while the up-line interactive signals are in the up-line channel of CDMA TDS-OFDM. The interactive interface of broadcast channel and interactive channel or the common interface of single way broadcast system independent of interactive channel are the top box nulti-transfer network protocols and compatible with Europen DVB-C standard.

The present invention belongs to the field of quantitative evaluation of human body's subhealth state and features that in personalized sports experiments, the testee's electrocardiogram, pulse wave and blood pressure are measured and recorded; hereby the characteristic physiological parameters including maximum systolic blood pressure, average rest heart rate, heart rate restoring time, the ratio between height and squared body weight and maximum heart rate are then obtained and substituted into judgment function to generate the evaluation value of human body's subhealth state; and the evaluation value is substituted into the membership function to obtain the subhealth state grade. The subhealth state grade lower than 75 is corresponding to subhealth state and or else the health state.Correspondingly, the computerized measuring and evaluating system is also provided.

The present invention belongs to the field of quantum cipher communication technology. Compared with traditional quantum cipher key scheme based on N groups of measuring base, the said method has thefollowing features. The selection of the base is controlled with one string of repeated control codes to change the selection of the base from random one to determined one end to the interceptor, thecontrol codes are cipher key string. Thus, the quantum bit utilization is raised from original (1/N)x100% to near 100%. Omitting the step of comparing the base in both sides and substituting simplified encoding with all capacity encoding raise the information carrying amount each quantum state from original quantum bit to log2(2N) quantum bit. So, the total bit information transmission efficiencyis raised by at least N/log2(2N) times.

The present invention relates to laser ranging technology. In a photoelectronic signal oscillation loop comprising controlled laser emitter, measured target and optical receiver connected successively and under the control of the optical receiver, photoelectronic signal oscillation cycle of laser output yes-no-yes and stable photoelectronic signal circulation are formed in the controlled laser emitter, and thus the range may be obtained. The oscillation circuit makes it possible for continuous determination of N cycles, and the average value in the N cycles is obtained with the flying time measuring unit and the microprocessor to raise the measurement precision. Meanwhile, the present invention has shortened total measurement time.

The flash storage unit includes a semi-conductor substrate of P type and P pit in the said substrate a includes a semi-conductor substrate of P type and P pit in the said substrate, a tunnelling the oxidation layer on the semi-conductor substrate, a stacked grid structure including floating grid and control grid of which floating grid is isolated to the control grid through the composite media layer of silica/silicon nitride/silica, on the tunnelling thin oxidation layer; a source region consisting of a n(-) source region injected by low concentration phosphorus and prolongated below the floating grid as well as a n(-) source region injected by high concentration arsenic, it the substrate of the first edge of the said stacked grid structure, a drain regino consisting of a n(-) drain regino injected by low concentration phosphorus.

A method of increasing carrier frequency diviation estimation performance of cross FDM communication system includes the three following steps: 1/to estimate the carrier frequency divination to the continuous L train sequences with the known MLE 2/to select the weighted factors with ant one of the following three methods; to use the received signal power as the approximate value of the weighted factor when signals/noise ration is far more larger than 1. Every weighted factor should select the same value a; selecting carrier frequency divination estimation value with the largest signal/noise ratio as the weighted factor 3/combining number L ML carrier frequency divination estimation values with the weighted factor to get the optimized carrier frequency divination estimation valve.

A process for using solid-phase carrier to separate nucleic acid from biologic particles features that the nm-class magnetic microspheres emulsion or the specially treated fibrous membrane is used as solid-phase adsorbing medium to separate cell from biologic particle, the cell-cracking liquid is used to crack cell structure, the solid-phase adsorption and desorption are used to directly collect the biologic particles rich in nucleic acid from biologic specimen such as blood plasma, etc., and the nucleic acid is extracted. Its advantages include simple process, high speed, and easy autoamtization and miniaturization.

The invention discloses a method for testing the dynamic characteristics of a lubricating film of a sliding bearing. The method comprises the following steps of: (1) assembling a test platform and a signal acquisition system, adjusting the rotating speed of a main shaft and the temperature and the flow rate of a lubricant, supplying a lubricating medium and starting a drive motor and a signal acquisition instrument; (2) applying excitation force on the main shaft by an electromagnet loading device of the invention, measuring the excitation force by a pressure sensor, measuring the vibration response of the main shaft in horizontal and vertical directions by electric vortex sensors and acquiring and storing signals; (3) changing the rotating speed of the main shaft, keeping the temperature of the lubricant unchanged, and repeating the steps; (4) changing the temperature of the lubricant, and repeating the steps; (5) carrying out time-frequency domain analysis processing on the acquired signals and recognizing the dynamic characteristic parameters of the lubricating film by using an equation of solving frequency domain response by a least square method of solid and virtual frequency coupling; and (6) fitting and analyzing the eight dynamic characteristics parameters of the lubricating film at different rotating speeds and different lubricating temperatures, namely obtaining the three-dimensional dynamic characteristics of the lubricating film of the sliding bearing at varied speeds and varied temperatures.

The invention is a standard cell general wiring method for optimizing time delay by inserting buffers in multi-end line network, belonging to IC CAD technical field, and characterized in: as optimizing circuit time delay, firstly using the known standard cell general wiring method that optimizes the time delay based on key network technique to construct a key network for the circuit, and then using the minimum cutting method to find a group of line networks obviously optimizing time delay but little worsening the jam; after replacing a multi-end line network among them with a time delay optimum wiring tree, in the paths from source node to key drain points, firstly converting the time delay optimum wiring tree to a branched wiring tree, then according to the SAKURAI time delay calculating formula, selecting a node with the maximum improved value from the optimum insert point and branched insert point in the path during time delay improving; then judging if the node accords to initial restriction index. Relative to the traditional methods, the invention can obtain the outstanding time delay optimized result within a shorter time.

The present invention belongs to the field of three-level voltage source inverter. The bridge arm through protecting system includes a bridge arm through protecting IGCT switching device connected between the quadruple input filtering and rectifying circuit and inverter, a short-circuit signal generator and a pulse state protecting control circuit as well as a fault detecting and pulse blocking circuit comprising gate signal feedback circuit and IGCT fault diagnosing circuit. In some fault occurs, the electric connection to the rectifying bridge and the inverter is cut out immediately while the short-circuit current is borne by the IGCTs of the invverter until the fault judging signal opens the pulse blocking system and blocks the IGCTs.

The invention belongs to the technical area of compensating the delayed time in the harmonic current detection. It is characterized by that it improves the conventional instant space vector method based on the theory of instant reactive power. When the coordinate transformation is carried out, the "delta" "theta" angle is added to the conversion matrix in order to compensate the delayed time, "delta" "theta"=n "omega" "delta" T here n is harmonic degree, "omega" is the angular frequency of the principal wave, "dlta" T is the delay time. Thus, the issue of the delayed time of the digital controller is solved. The invention realizes the real-time compensating the harmonic current, guarantees the compensation characteristic of the active filter as well as avoids the need of the device with high calculating speed so as to reduce the cost.

An over-all wiring method for standard units with optimized time delay includes creating over-all wiring diagram, configuring initial wiring tree with the shortest length, configuring key network composed of key pins, key sides and the weight, virtual source point and convergent point of each orientative side, reconfiguring the wiring tree from a group of sides with minimal division for reducing time delay, comparing the given delay data with optimized delay, and iterating to obtain wiring tree of over-all network.

The present invention belongs to the field of low-voltage power line communication technology. The bandspread communication network system features the pyramid-shaped master-slave communication system structure comprising computer, concentrator, router and subscribers from top to down. The communication method features the establishment of relation table of network node low-place address and phase on the basis of proposing network node and network segment; the establishment of the bi-directional communication relationship including concentrator, network segment router, network node low-place address and phase; and the establishment of the subscriber ID-network node address table for unique correspondence of subscriber ID and destination address.

The optical mapped virtual vertex for each vertex of the polyhedron to be refracted or reflected is calculated. Based on the topological relation of the polyhedron, each virtual vertex is connected to form the virtual object composed of several virtual faces. In rendering, the virtual object is projected to the relevant refraction or reflection surfaces by using recursive algorithm. With being mixed with the color value of the surface, the reality graphics, similar to the graphics obtained by the ray tracing method, is obtained. The invention gives the formula to calculate the virtual vertex P' for any point P in five circumstances: the object inside or outside the plane refractive body, the three-dimension refraction, the spherical surface reflection and refraction as well as the algorithm and drawing procedure.

The general annular piezoelectricity ultrasonic motor of large moment with hollow structure features in that the stator comprises the metal ring with driving teeth and the annular piezoelectric ceramic pieces. The rotator comprises metal pieces matching the driving teeth, the spring and rubber gasket. The base comprises the ball bearing for positioning the hollow central shaft. The piezoelectric ceramic pieces are polarized along the thickness with inversion once per 1/2 wavelength. The difference of 1/4 or 3/4 wavelength is existed between the two groups of the polarized sections, which are connected to the two AC signals. The invented motor possesses the versatility, provides the maximum output torque larger than 5K gfcm, and rotate speed less than 120r/min.

An in-line upgrade system for FPGA program is composed of FPGA connected to external bus, controller connected to said FPGA, and non-volatile memory connected with the said controller. Its upgrade method includes running particular program by user, sending I/O instruction to external bus, transmitting data to or from FPGA, and writing or reading data to or from the non-volatile memory by controller.

The invention relates to an interactive method for rapidly and automatically extracting fetus electrocardio. The interactive method includes the steps that electrocardio signals at the abdomen of a parent body are preprocessed, and power frequency interference and high-frequency noise interference which are relatively easy to filter are removed; smooth and steady wavelet time-frequency transformation is carried out on the preprocessed electrocardio signals at the abdomen of the parent body; feature extraction is carried out on wavelet detail coefficients; features related to contents of the electrocardio signals at the abdomen of the parent body are detected, and a parent body electrocardio template is constructed; and the constructed parent body electrocardio template is removed from the preprocessed electrocardio signals at the abdomen of the parent body so as to obtain fetus electrocardio signals. According to the interactive method for rapidly and automatically extracting the fetus electrocardio, the smooth and steady wavelet time-invariant feature is adopted; the position of parent body electrocardio and the position of the fetus electrocardio can be accurately positioned; the extracted fetus electrocardio data have the high accuracy rate when being used for fetus heart rate detection; in addition, according to an interactive feature automatic detection method, in cooperation with the construction of the parent body electrocardio template, needed circulation is less, the calculating speed is high, and the interactive method can meet the real-time processing requirement and can be suitable for extracting the fetus electrocardio from the electrocardio in the abdomens of different pregnant women.

The invention provides a method of preparing linarin extracts from wild chrysanthemum flowers. The content of linarin in the obtained extracts is more than 50 percent. The invention has the technical scheme that the method comprises the following steps: adding wild chrysanthemum flowers into ethanol water solvents; adopting hot reflux or percolation extraction; concentrating the extraction solution to a state without ethanol flavor; then, regulating the pH value of the concentrated liquid to 10; placing the liquid; taking the supernatant fluid for regulating the pH to about 7 to 8 by acid; after the precipitates are filtered, taking supernatant fluid to be treated by macroporous resin; firstly, using water for elution; then, using 10 percent to 30 percent ethanol water and 50 percent to 80 percent ethanol water for elution; collecting 50 percent to 80 percent distillates; concentrating the 50 percent to 80 percent distillates; and carrying out drying to obtain linarin extracts with the linarin content higher than 50 percent. The solvents adopted by the invention have low price and basically has no toxicity, the used resin can be reused for many times after the regeneration, and the cost is low. In addition, the method of the invention has the advantages of simple and convenient process, simple equipment and low cost, the content of the prepared linarin extracts is more than 50 percent, the industrial production can be carried out, and the expected goal of the invention is perfectly reached.

The invention belongs to the technique area of the 3D space orientation, including following steps. The system is composed of the some calibrated objects with the aiming points, the electrode cap having the fixed space positions with calibrated objects, the non-measuring camera, the image processor and the computer. The space coordinate measure of the electrode is completed through the following three steps. The 2D coordinates of the control points (the aiming points and the points to be measured) in the group of image are obtained by using the image recognition method (such as gray scale threshold method). The parameter of the camera at the shooting time can be solved inversely by the collinearity equation in the close-range photogrammetry from the 2D coordinates of the aiming points in the image and its actual 3D coordinates.

The invention relates to a storage bottle capable of storing separately and mixing instantly materials. The storage bottle capable of storing separately and mixing instantly materials comprises a bottle body and a bottle cap, wherein the bottle cap is formed by threadedly connecting a base and a cap; the cap is internally provided with a storage bin with a downward opening; the opening of the storage bin is coated with a seal membrane; the base of the bottle cap is provided with a membrane poking mechanism aiming at the storage bin; the membrane poking mechanism comprises a tip bulge capable of poking a membrane upward and a through hole communicated with the bottle body internally. The storage bottle can quantify and separate two kinds of materials respectively in the bottle body and the storage bin of the bottle cap; the storage bottle needs to move downward as long as the cap is rotated when being used, and the seal membrane of the storage bin is poked by the tip bulge so as to open the bin, and lossless quantitative mixing is completed. A series of procedures of storing respectively usually, weighing by a weighing device in using, then transferring quantitatively and the like are omitted for two kinds of materials which are not suitable for being mixed and stored, but have to be mixed to use (or eat). The storage bin is simple in structure, and is convenient to use.

The invention discloses a variable-speed response capsule glue-dipping device and method. A glue-dipping groove is improved and comprises an inner groove and an outer groove; under the action of a stirring rod at the opening at the bottom of the inner groove, a glue liquid springs out from bottom to top at the bottom of the inner groove so as to overflow into the outer groove and then enters the bottom of the inner groove from the outer groove for turnover, and the process is performed in a circulating and reciprocating manner to achieve the stirring effect; a second motor driving the stirring rod to rotate is matched with the operation of a glue-dipping cam driving device to perform high-speed rotation or low-speed rotation under the action of a variable-frequency controller; when the glue-dipping operation is stopped, the high-speed rotation is performed, thereby quickly and uniformly stirring the glue liquid; and when the glue-dipping operation is started, the stirring rod rotates at low speed so as to enable the glue-dipping liquid level and the glue liquid in the glue-dipping groove to be basically in a static state. Thus, the uniformity of glue films formed by glue dipping is better, and produced capsules have small difference in natural grain weight.