405results about How to "Innovative ideas" patented technology

The invention discloses a pipelined analog-digital converter (ADC) capable of carrying out background digital calibration. The pipelined (ADC) comprises a sampling hold circuit, M calibrated level circuit modules, N level circuit modules and a back level analog-to-digital conversion module which are sequentially connected in series, wherein each calibrated level circuit module is connected with a corresponding digital calibrated level circuit; the quantized value output port of the level circuit module and the quantized value output port of a back level analog-to-digital conversion module are respectively connected with a time delay and dislocation summation module; and the output end of the time delay and dislocation summation module is sequentially and reversely connected in series in the digital calibrated level circuit. The pipelined analog-to-digital converter provided by the invention has the advantages that the thinking is inventive, the analog circuit has a simple structure, a pseudo random number generator and a multi-way selection switch are additionally arranged on the foundation of the existing technical structure, and the working of other analog circuits can not be unaffected in the working process; and simultaneously, the principle of the digital circuit segment is simple and is easy to realize, the error of the pipelined ADC can be reduced obviously, the linearity of the pipelined ADC can be improved, and the dynamic properties of the pipelined ADC can be improved.

The invention discloses a partial model weight fusion Top-N film recommending method based on user clustering. The method comprises the steps of 1, preprocessing data, wherein inactive users and filmswith very low popularity are subjected to data cleaning, user film label documents are constructed, explicit scoring information is converted into implicit feedback information, and a user-film implicit feedback matrix A is constructed; 2, conducting user clustering, wherein film label information is utilized, user feature vectors are obtained by training an LDA topic model, and user clustering is achieved through a spectral clustering algorithm; 3, determining a local recommending model and training a global recommending model; 4, conducting model weight fusion recommending; 5, proving the effectiveness of the models through a leave-one-out method.

The invention relates to a pre-assembly method of a construction steel structure, in particular to a computer simulation pre-assembly method of the construction steel structure. The method comprises the following steps: drawing out a three-dimensional standard map of all members of a construction structure according to a design drawing through computer software and establishing a three-dimensional model drawing and a standard map library; using a 3D optical scanning measuring system to carry out three-dimensional raster scanning on the members, measuring the entity members, and introducing into a computer for obtaining a three-dimensional stereo image; using the computer software to process the measured entity members, and being compared with the three-dimensional model drawing for inspecting whether the members are qualified or not; using the actually measured members to carry out simulation assembly on the whole construction structure; finding out amount of deflection of connecting parts between the actually measured members and the simulation assembly members; and providing a member simulation assembly detection parameter report after the simulation assembly of the actually measured members is qualified, and guiding the installation and the field construction. The method has simple operation, can cover the full process of the member overall part of the construction steel structure, and has representativeness and guidance; and one-time development can be utilized repeatedly, and the waste of resources can be further avoided.

The invention discloses a fracturing method for deep shale gas through a V-shaped pressure curve. The fracturing method comprises the steps of (1) key reservoir parameter evaluation, (2) optimizationof fracture parameters and fracturing construction parameters, (3) perforation position determination and perforation operation, (4) acid pretreatment, (5) variable-displacement and low-viscosity slick water joint forming construction, (6) powder pottery construction for adding different sand liquid ratios into low-viscosity slick water, (7) medium-particle-size proppant construction for adding different sand liquid ratios into medium-viscosity slick water, (8) high-viscosity gel and large-particle-size carrying proppant construction, and (9) displacing operation. According to the fracturing method, complexity of fracturing fractures of the deep shale gas is improved, the filling ratios of systems with different scales of fractures such as near wells, far wells, main fractures and micro-fractures are increased, the effective stimulation volume of the deep shale gas is increased, and the yield increasing and stabilizing effects after pressure are improved.

A dynamic password security login method is provided, which sets that a client and a server have weight synchronous models with the same parameters, and comprises the following steps: initiating a login request by the client, and sending a user name to the server, generating a random number by the server and returning to the client, obtaining that M=user 'Passwd' R, H=SHA1(M), F=LFSR (H) by respective calculations of the client and the server, obtaining the same weight WC=WS according to the mapping algorithm of a random number sequence F, leading the weight synchronous model to study P=%n order by the client according to the random number, wherein R is the random number, n is a preset value, sending the weight vector WC after updating P orders to the server after Hash algorithm SHA1(WC), and leading the weight synchronous model to study P orders by the server to obtain the weight vector WS after updating P orders, and calculating the Hash value SHA1 (WS) thereof, wherein the identification is success if the SHA1 (SC)=SHA1(WS), or is false. The dynamic password security login method has simple use, highly-effective security and low cost.

The power supersonic transducer exciting circuit used in biomedicine engineering technology includes two signal generator circuits; gate circuit with first and second inputs connected to the outputs of the signal generator circuits, control end accepting the frequency selecting signal, the third input accepting signal from the protecting circuit and output connected to the input of the driver circuit; driver circuit with output connected to the signal input of serially resonant power amplifier circuit; serially resonant power amplifier circuit with feeding input connected to the voltage output of multiple-stage DC source to output protecting signal to the protecting circuit and signal output connected to the power supersonic transducer to excite it to send supersonic wave. The present invention has simple circuit, easy regulation, controllable output signal amplitude and duty ratio, high transmission efficiency and circuit safety.

The invention provides a three-frequency-band high-gain omnidirectional dipole antenna comprising a three-frequency oscillator array, balanced feeder lines, a first dielectric plate, a second dielectric plate, and a third dielectric plate. The first dielectric plate, the second dielectric plate, and the third dielectric plate are arranged successively from top to bottom. The balanced feeder lines are arranged at the top surface and the bottom surface of the second dielectric plate and are printed along the axis direction of a three-frequency oscillator unit. The balanced feeder lines are parallel dual-line transmission lines. The three-frequency oscillator units in the three-frequency oscillator array are printed at the first dielectric plate and the third dielectric plate; and feeding points among all three-frequency oscillator units are connected by the balanced feeder lines. The three-frequency oscillator units consist of upper arms and lower arms, wherein the upper arms and the lower arms are arranged in a mirror symmetry mode. The upper arms and the lower arms include first branches, second branches, and third branches, wherein the first, second, and third branches are arranged along parallel axes; the second branches and the third branches are arranged at the two sides of the first branches symmetrically and the bottoms are connected into one by horizontal branches; and balanced feeding points are formed at central protrusions of the upper arm and the lower arm. The three-frequency-band high-gain omnidirectional dipole antenna has advantages of high gain, omnidirectivity, high efficiency, small size, and low cost; and an effective or benefical reference is provided for an optimized design of other multi-frequency or broadband high-gain omnidirectional array antennas.

A bulk password grading priori check method includes two steps of grading based on actual password data as well as training and retrieval of a grading password model. The grading includes the steps of firstly sampling and extracting millions of Chinese user password data to obtain a sample training set, then obtaining password probability transfer matrix through a second-order Markov model according to the sample training set and calculating to obtain a strength assessed value of each password, and finally grading all password data according to the password assessed value and a password hierarchy. The training and retrieval of the grading password model includes the steps of storing grading results at a bit vector of a Bloom filter at each grade through hash functions by building a password Bloom filter of different strength for the password set of each grade so as to build a grading password model, and using the password Bloom filters of multiple grades for quickly and efficiently determining the strength of passwords to be checked during retrieval.

The power generating and monitoring circuit for use in biomedicine engineering and technology consists of exciting signal generator, serial resonant power amplifier circuit, active low-pass filter, controllable DC power source, voltage detecting circuit and current detecting circuit connected together. It is connected with intelligent monitoring system, and the output of the serial resonant power amplifier circuit is connected to the melting electrodes as load. The present invention has simple circuit, convenient regulation, high work efficiency, flexible control, and high measuring and calculating precision of the output power and load impedance.

The present invention provides an automatic hierarchical atlas collaging method based on image importance. The method comprises four steps: step 1: segmenting an image by using a Meanshift algorithm, extracting a salient area in the image in a rectangle manner, and if there are a plurality of salient areas, merging the salient areas into one; step 2: calculating to obtain a different degree of an image foreground and background through color complexity and pixel gradient complexity of the image foreground and background, then calculating an average value of different degrees between the image and other images in an atlas, to obtain a representing degree of the image, and finally averaging the different degree of the foreground and background and the different degrees between images, to obtain importance of each image; step 3: storing a hierarchical relationship of the atlas by using an XML file, and using the above obtained importance of the image as a weight of a node and storing a rectangle outline circumscribing the salient area; and step 4: using a Voronoi tree to visualize a hierarchy of the atlas, representing a subset of the atlas or an importance weight of the image by using a canvas area, and automatically collaging the salient area of each image according to the rectangle outline of the salient area of the node and an image zooming technology.

The invention discloses a multi-spacecraft task intelligent planning and control method for a complex dynamic environment, and the method comprises the steps: randomly generating a large amount of sample data based on a three-pulse indirect transfer model through combining with a reserved task orbit dynamic environment of a spacecraft; estimating the transfer trajectory parameter of the potentialtarget by using the neural network with complete learning and combining the actual task scene of the spacecraft, and substituting the estimated value of the neural network into the constructed task comprehensive performance evaluation model to calculate the single-satellite task performance; performing multi-spacecraft task coordination allocation by using a distributed bidding and tendering market mechanism to obtain a scheduling scheme with optimal global task efficiency; and the task spacecraft designing an accurate transfer track in a complex dynamic environment according to the task allocation result, generating a control instruction and controlling the spacecraft to complete a task. According to the method, the defects of poor planning real-time performance and low control precisionwhen an existing method is used for processing a multi-satellite task under the condition of a complex dynamic environment are overcome.

The invention provides a mini enhanced dual-polarization omnidirectional ceiling antenna. The antenna comprises a single cone, a horizontal polarization unit and a step-shaped floor which are arranged in a vertically coaxial and centrally overlapped manner from top to bottom successively, the single cone comprises a first single cone radiator and a second single cone radiator which are arranged in a crossing manner, the bottom of the single cone is provided with a feed point, and a coaxial feed cable is connected to the feed point in the bottom of the single cone by penetrating the step-shaped floor and the horizontal polarization unit from bottom to top successively. Within the frequency range from 0.8GHz to 2.70GHz, the single-cone ceiling antenna realizes effective impedance match, an ideal omnidirectional radiation performance, a substantial edge coverage enhanced effect, a consistent in-band coverage range, higher efficiency, higher port isolation degree (better than -24dB), small size and low profile and is suitable for indoor coverage. The antenna is also characterized by being novel in ideas, clear in principles, universal in methods, easy to realize, low in cost and suitable for batch production, the antenna can be used to replace a routine dual-polarization omnidirectional ceiling antenna, and can be used for design and improvement of a vertical-polarization enhanced omnidirectional ceiling antenna and a planar Alford loop antenna.

The invention belongs to the technical field of inorganic functional materials, and discloses a method for preparing a Ag@AgCl/GO self-cleaning type surface raman-enhanced substrate. According to the method, silver nitrate serves as a precursor, PDDA serves as a modification reagent, C6H12O6 serves as a reducing agent, and hydrothermal reaction is performed to prepare Ag@AgCl sol; a Ag@AgCl/GO composite thin film is obtained through self-assembling and adsorbing Ag@AgCl nano particles with positive charges by using the fact GO carries negative charges, and has a high adsorption function and a temperature effect, and the Ag@AgCl/GO composite thin film is applied to the self-cleaning type surface raman-enhanced substrate. Compared with a conventional raman-enhanced substrate, the self-cleaning type surface raman-enhanced substrate has an excellent SERS (surface enhanced raman scattering) property, that a substrate material is recycled for multiple times is realized due to the excellent photocatalytic degradation performance, so that the self-cleaning type surface raman-enhanced substrate has a wide actual application prospect.

The invention relates to a stress self-balancing and deviation-rectifying equipment for upright post system in bridge deck structure jacking construction. Said equipment includes the following components: straight-through type jack, stranded wire, wind-resisting guy rope and anchorage device, etc. Said invention also provides the concrete mounting method and steps of the above-mentioned all the components for implementing stress felf-balancing and deviation-rectifying method of upright post system in bridge deck structure jacking construction.

The invention relates to a method for calculating the relative permeability of a two-phase fluid in a spontaneous imbibition process of a tight reservoir. The method is an effective means for evaluating the seepage dynamics of a spontaneous imbibition two-phase fluid in a tight reservoir. The method successively comprises steps of: (1) preparing a core for a spontaneous imbibition NMR experiment;(2) obtaining a sample saturated simulated formation water condition NMR T2 spectrum; (3) performing a sample NMR spontaneous imbibition experiment to obtain different spontaneous imbibition time T2 spectrums; (4) calculating the water saturation of different spontaneous imbibition time samples and a T2 spectrum logarithmic mean value; and (5) calculating the relative permeability of two-phase fluid in spontaneous imbibition process. The method, in combination with the saturated water state and the spontaneous imbibition process NMR T2 spectrum, accurately calculates the relative permeabilityof the two-phase fluid in the spontaneous imbibition process of the tight reservoir, and lays a foundation for the dynamic evaluation of the tight reservoir development.

The invention discloses a graphene-containing polyurethane antimicrobial adhesive and a preparation method thereof. The graphene-containing polyurethane antimicrobial adhesive is prepared from the following raw materials in parts by weight: 5-20 parts of polyisocyanate, 0.2-2 parts of functionalized graphene, 40-60 parts of polylol, 10-20 parts of plasticizer, 0.05-0.15 part of catalyst, 0.1-1.5 parts of defoaming agent, 0.05-0.10 part of dehydrator, 0.05-0.20 part of coupling agent and 0.05-0.20 part of antioxidant. The method effectively improves the antibacterial property of the polyurethane adhesive and widens the application range of the polyurethane adhesive, thereby performing an active promoting function on industrial production of the high-performance polyurethane adhesive and wide application of the polyurethane adhesive in national industry.

The invention provides an oil and gas reservoir fracturing sand adding method, which comprises a fracturing crack forming stage and a sand adding stage. A multi-scale complex crack system is formed inthe fracturing crack forming stage, fracturing fluid with different viscosities and propping agents with different particle sizes are injected in the sand adding stage to adapt to the multi-scale crack system, and the crack system is filled and supported from far to near. According to the method provided by the invention, by optimizing and adjusting the construction parameters and adjusting and controlling the accumulation height of the proppant in the fracture, the effective support of the proppant in the fracture height direction is improved, the filling degree of a multi-scale complex fracture system is improved, the volume fracturing complex fracture sand adding technology is perfected and improved, and finally, the effects of increasing the yield after pressing and stabilizing the yield are improved.

The invention discloses a prediction method for vertical deformation of an existing subway tunnel adjacent to foundation pit engineering. The prediction method comprises: monitoring a foundation pit and a tunnel structure adjacent to the foundation pit laterally, and analyzing vertical displacement characteristics of an enclosure structure and the tunnel structure; recording a cumulative verticaldisplacement measured value of the enclosure structure as dw and a cumulative vertical displacement measured value of the tunnel structure as dt, taking the axial direction of the tunnel as an x-axisdirection, taking the position of a first monitoring point as an x-axis zero point, taking the monitoring data of each monitoring point as a data point, and drawing distribution curves of dw and dt along with the axial position of the tunnel; recording the horizontal distance between the enclosure structure and the adjacent ascending and descending tunnels as L; drawing a relation curve of dt and1000dw/L by considering the influence of L on the deformation correlation of the enclosure structure and the tunnel to obtain dt = Aln (1000dw/L) + B; obtaining dt' of different axial positions of thetunnel by utilizing dt'= Alg (1000dw/L) + B; and drawing a distribution curve of dt and dt' along the axial direction of the tunnel, calculating a prediction error, and evaluating a prediction effect.

The invention discloses a processing method for reusing an unqualified chamfered silicon briquette, and belongs to the field of semiconductor device processing. The silicon briquette is firstly cut in the direction parallel to the end face of the unqualified silicon briquette, small cuboid-shaped silicon briquettes are obtained, and the length of the small silicon briquettes is larger than the edge length of the end face. Then, the small cuboid-shaped silicon briquettes are processed to be small cube-shaped silicon briquettes, and the side faces of the small cube-shaped silicon briquettes are opposite and are pasted to form a new strip-shaped silicon briquette. Then, rolling chamfering is carried out on the new strip-shaped silicon briquette, a qualified silicon single crystal rod is obtained, and finally the silicon single crystal rod can be cut into qualified silicon wafers. According to the method, the unqualified chamfered silicon briquette can be processed and reused, the silicon wafers with the qualified size can be obtained in a cutting mode, the method can greatly lower raw material waste caused by unqualified chamfering and improve the use ratio of materials, and silicon wafer cost is greatly lowered. The method is novel in thought and unique and simple in treatment mode, technicists in the field can understand the method through one glance, and the method is very suitable for being popularized in a wide range, and can achieve good economic benefits.

The invention discloses a distribution network mixed connection grounding operation capacitive current measurement method and system. The method comprises the steps that neutral point displacement voltage and neutral point current of a power distribution network are acquired, grounding resistance of a power distribution network mixed grounding system is obtained, neutral point displacement voltage and arc suppression coil current of an arc suppression coil at different gears are acquired, and the capacitive impedance of the power distribution network mixed grounding system is calculated according to the neutral point displacement voltage, the arc suppression coil current and the grounding resistance; and the capacitive current of distribution network mixed connection grounding operation is obtained according to the result of dividing the phase voltage of the power distribution network by the capacitive impedance of the power distribution network mixed grounding system. The system comprises a grounding resistance calculation program module, a capacitive impedance calculation program module and a capacitive current calculation program module. Improvement is performed on the basis of an arc suppression coil grounding system measuring the capacitive current by using a two-point method so that accurate measurement of the capacitive current of distribution network mixed connection grounding operation can be realized, and the method and the system have the advantages of being novel in thinking, clear in flow and high in accuracy.

The invention discloses a mechanical equipment bottom damping device which comprises a first spring, a supporting plate, a bottom plate, a rectangular channel, a push rod, a fixing box, a reset spring, a base, an air pressure damping device, a middle plate, a baffle, a supercharge bin, a rack, pressure conveying bins, a damping layer, a bottom cushion, side plates, a top plate, a threaded hole, astopping ring, a connecting pin, a second spring and a through hole. The side plates are fixedly connected to the periphery of the bottom cushion, the side plates are of a rectangular frame structure,the top plate is arranged above the bottom cushion, the middle portion of the part between the top plate and the bottom cushion is provided with a hydraulic damping device, the air pressure damping device is composed of the middle plate, the baffle, the supercharge bin, the rack, the pressure conveying bins, the stopping ring, the connecting pin and the through hole, the middle plate is fixedly connected to the middle portion of the bottom of the top plate, the baffle is arranged below the middle plate, the rack is arranged at the middle portion of the top face of the bottom cushion, the supercharge bin is arranged at the center position of the interior of the rack, and the pressure conveying bin are arranged around the supercharge bin.