3053results about How to "Undisturbed" patented technology

The present invention discloses a physical three-dimensional model automatic modeling method which comprises the following steps of (1) collecting a turntable point cloud and a modeling object point cloud, and carrying out real-time registration to obtain a mixed point cloud of an object and a turntable, (2) carrying out point cloud pretreatment to obtain the surface point cloud of a model object with a bottom surface point, (3) carrying out surface reconstruction to obtain the three-dimensional surface model of the object, (4) carrying out model simplification treatment on the three-dimensional surface model, and establishing the three-dimensional simplified surface model of the object, (5) carrying out texture mapping on the three-dimensional simplified surface model, and (6) carrying out model rendering on the three-dimensional model which is subjected to texture mapping to generate a two-dimensional image. The method has the advantages that the system operation is stable and reliable, the automation is realized in the operation process, a rebuilding effect is good, and the application needs of different simulation scenes can be satisfied by a built multi-granularity three-dimensional model.

The invention discloses a network defense method based on a honey pot technology. Malicious flor is introduced into a Web application scene honey pot based on Docker via a proxy server, malicious attack of malicious flow is intercepted through the Web application scene honey pot; thus, in the scheme, through deployment of the Web application scene honey pot based on Docker, network attack can be defensed actively, attack to a real goal by an attacker is delayed, the precious attack tracing time is provided for a defender. The Web application scene honey pot based on Docker also can effectivelyovercome the defect of inadaptability to real scenes of a customer, storage space is effectively reduced through a virtual Docker technology, the network is isolated, interference of honey pots is guaranteed, and the stability of the honey pot is guaranteed through continuous integration. The invention also discloses a network defense system based on the honey pot technology. The system also canhave the technical effects.

The invention discloses a dynamic signal demodulation method for a fiber laser sensor. A sensing system is established, and comprises a beat frequency signal generation part and a signal demodulation part. The beat frequency signal generation part generates a beat frequency signal and receives a dynamic signal through a sensing probe; the original beat frequency signal is demodulated into a frequency modulation (FM) signal by the dynamic signal; the FM signal is input into the signal demodulation part and demodulated by an FM demodulator to form a modulation signal, namely, the dynamic signal; and the modulation signal is subject to analogue-digital (AD) conversion through an AD data acquisition card and then processed by a digital processing circuit to obtain the frequency and acceleration parameters of the dynamic signal. Through the invention, the dynamic signal demodulation method is free from influence of light-intensity variation, electromagnetic interference and the like; and compared with the known fiber dynamic demodulation method, the dynamic signal demodulation method is easy to implement and ensures stable and reliable operation and low cost.

The invention provides an optical fiber acceleration transducer probe and an optical fiber acceleration transducer system based on the phase generated carrier modulation technique. The system comprises a laser light source, optical fibers, a fiber coupler, the optical fiber acceleration transducer probe, a photoelectric detector and an electric demodulating system of phase generated carrier modulating signals, wherein the laser light source is a phase generated carrier modulated laser light source; the fiber coupler is respectively connected with the laser light source, the acceleration transducer probe and the photoelectric detector through the optical fibers; the photoelectric detector is connected with the electric demodulating system of the phase generated carrier modulating signals through wires or cables; and the optical fiber acceleration transducer probe comprises an acceleration detecting structure, at least one back plate, an acceleration transducer frame and at least one fiber sensor head. By adopting a double back plate structure and a fiber reading and detecting method, the system of the invention is improved and enhanced in the aspects of shock resistance and overload resistance performances, anti-electromagnetic interference, sensitivity and the like.

The invention discloses a robust lens distortion correction method. The invention provides a method for separating lens distortion from camera parameters to be solved separately. The method comprisesthe following steps of: performing a feature extraction from a checkerboard calibration object by firstly performing angular point detection utilizing a Shi-Tomasi operator, then performing screeningaccording to the specific characteristics of symmetry and large variance of the checkerboard angular point, and finally obtaining an sub-pixel coordinate with accurate checkerboard angular point by utilizing a sub-pixel optimization algorithm; establishing a camera imaging model and a lens distortion model to obtain an optimized objective function with respect to a distortion parameter; and solving the distortion parameter by utilizing a nonlinear optimization algorithm for distortion correction. According to the robust lens distortion correction method, a calculation of all main distortion parameters can be accomplished with only one calibration object image containing the checkerboard, the model is simple, the calculation efficiency and stability are high, the application adaptability isgood in an industrial field, and the calculation accuracy is comparable to a traditional method.

The invention discloses a method for manufacturing and using a wearable flexible skin electrode. By fusion of the method and a novel micro-nano machining technology, the wearable flexible skin electrode is fixed to the skin surface through an ultrathin, nontoxic and high-biocompatibility skin adhesive without conductive adhesives, and the electrode can be well fused with the skin of a human body and is capable of moving along with stretching of the skin, high in comfort and less prone to shedding. Since the electrode is in directly close connection with the skin, low impedance, high sensitivity and high stability are achieved, and interference of limb movement is avoided. The electrode has waterproof and sweatproof functions and is capable of monitoring electric signals of the human body in large-amplitude motion. A human body electric signal detection device manufactured with the skin electrode has the advantages of small size, light weight, convenience in wearing, availability for long-term use, low cost and benefit of popularization for long-term health monitoring and acquisition of health big data of people in wide range.

The invention discloses a distance-speed synchronous pull-off deception jamming recognition algorithm based on gradient projection, and belongs to the field of radar anti-jamming. According to a PD radar, the radar is generally jammed through distance-speed synchronous pull-off jamming, the deception jamming can conduct pull-off jamming on distance information and speed information at the same time, and thus the difficulty for accurately choosing and tracking a target of the PD radar is increased. The method comprises the following steps that (1) signals received by the radar are sampled, and a complete atom library is established according to the time-variant characteristic of a distance-speed synchronous jamming echo; (2) when the AGC voltages and the target number of a receiver are suddenly changed, it is judged that the target is jammed; (3) the Doppler frequency of the target is obtained through a gradient projection method, then the target speed is figured out, and accordingly anti-jamming is performed according to the target speed. The distance-speed synchronous pull-off deception jamming recognition algorithm based on gradient projection is high in jamming recognition capability, easy in engineering realization, high in engineering application value and large in popularization prospect.

The invention relates to a loading and unloading system for a distribution center type automated container terminal. The loading and unloading system comprises a plurality of quay cranes, a nearshore multipath rectangular-ambulatory-plane automatic transportation system, an elevated container automatic loading and unloading system, a storage yard, a container evacuating port side multipath rectangular-ambulatory-plane automatic transportation system, a container evacuating port transportation system, an annular special container channel and a control system. Compared with the scheme of an existing automated container terminal, the loading and unloading system for the distribution center type automated container terminal is advantaged in that the loading and unloading system is creative and unique, and is high in production efficiency, safety, automation degree and stability, and is simple in structure, simple to control and complete in scheme.

The invention relates to a doped nano sensitive material for monitoring benzene, which is characterized in that: the doped nano sensitive material consists of Ag atom-doped TiO2, Fe2O3 and Al2O3 powder, wherein the content ranges of the components are that: the content range of Ag is 10 to 12 percent, the content range of TiO2 is 30 to 40 percent, the content range of Fe2O3 is 25 to 35 percent, and the content range of Al2O3 is 15 to 25 percent; and the grain diameter is less than 30nm. Benzene sensors prepared from the sensitive material provided by the invention have wide linear range, goodselectivity and high sensitivity, can monitor micro benzene in the air on line, and are not influenced by coexisting substances.

The invention discloses a probe compound for identifying fluorine ions by combining spectral detection and bare eyes. The compound is a new compound formed by using excited state proton transfer compounds as a matrix and by silylation. The compound can be used for detecting fluorine ions, in particularly detecting fluorine ions in a water environment. Infiltrated test paper prepared by the compound is quick and convenient, the detection limit is low, and according to different excited wavelengths, two modes, namely an intensity identification mode and a chromaticity identification mode, can be selected respectively for better detection by an instrument and bare eyes.

The invention relates to a coordinated monitoring method for preventing BGP (Border Gateway Protocol) routing hijacking (including prefix hijacking and next hop hijacking). The technical scheme is that an AS (Application Server) participating the coordination utilizes an original or newly-set server to run the BGP, sets a BGP session for acquiring routing updating messages together with one or more internal routers, and simultaneously sets a coordinated monitoring session together with monitoring servers in a plurality of other ASs, and the coordinated monitoring method particularly consists of a routing updating monitoring method and a session state monitoring method. On a control plane, the routing updating messages acquired by the session are analyzed and monitored, and the BGP prefix hijacking and the next hop hijacking are detected; and on a data plane, the coordinated monitoring session states are maintained and detected to discover routing hijacking events of a coordinating network per se in real time. The present network management and measurement facilities in the AS, as well as data acquisition facilities set by a public routing data dissemination project, and are fully utilized to build the coordinating network for monitoring the BGP prefix hijacking and the next hop hijacking through coordination and integration of conventional network resources.

The invention provides a magnetic mesoporous silica gel material extracting agent used for enriching and/or separating trace organic pollutants in an environment water sample, and a preparation method thereof. A core of the extracting agent provided by the invention is a silicon gel microsphere (i.e. magnetic silicon gel microsphere) wrapped with a plurality of Fe3O4 magnetic nano particles, and a shell of the extracting agent is a mesoporous silicon gel shell layer with inner and outer surfaces modified by C18 silanization. The extracting agent integrates huge special surface area, excellent extracting capacity and ultrahigh extracting volume of a mesoporous material, magnetic separating capacity of a magnetic material, strong extracting capacity of C18 groups and special volume exclusion function of a vertical channel of the mesoporous material. In addition, the extracting agent provided by the invention has the advantages of high extracting efficiency, low preparation cost and simple preparation method, and is very suitable for preprocessing samples of the trace organic pollutants in a bulk-mass water sample.

The invention provides a transformer excitation inrush current and fault differential current recognition method based on a Hausdorff distance algorithm. The transformer excitation inrush current and fault differential current recognition method comprises the steps of: acquiring secondary currents of current transformers at two differential protection sides of a transformer on each cyclic wave N point, and form a differential current signal sequence I; judging whether a value of the differential current signal sequence I exceeds a setting valve of a differential protection starting component, and starting a criterion disclosed by the invention for distinguishing a fault differential current and an excitation inrush current if the value exceeds the setting value differential protection starting component; judging and acquiring an extreme value of the differential current signal sequence I by adopting a 1/4 cyclic wave data window, regarding a differential sequence A after per-unit treatment as an edge feature point of a Hausdorff distance algorithm object graph, regarding a standard sine sequence B with amplitude being 1 as an edge feature point of a Hausdorff distance algorithm template graph, comparing an Hi value with a set Hausdorff distance threshold value Hset, and conducting protection action if the Hi value is less than the threshold value; and blocking protection if the Hi value is greater than the threshold value. The transformer excitation inrush current and fault differential current recognition method is used for directly judging difference of waveform pattern overall features of inrush currents including symmetric inrush currents, and ensures correct action of transformer differential protection.

The invention relates to a quantitative measuring method of a lithium ion battery electrolyte solvent, which relates to a quantitative measuring method of a battery electrolyte solvent, and solves the problems of the existing lithium ion battery electrolyte solvent and the additive quantitative analysis method that the requirement on detection equipment is high, the price is high, the detection process is complicated, the quantitative detection accuracy is low and the detection is easily subjected to the interference of impurities. The measuring method comprises the following steps: I, preparing an inner standard solution identical in internal standard substance concentration; II, drawing an internal standard working curve; III, preparing a detection solution; and IV, calculating the concentration of a component in the detection solution according to a specific value Y of the chromatographic peak area to the internal standard substance chromatographic peak area. The method is suitable for detecting a great number of analysis samples and has advantages of high detection speed, little time, high efficiency and the like.

The invention discloses an integral type thermal insulation building, which belongs to the technical field of building engineering. The problem to be solved is to provide the integral type thermal insulation building. The adopted scheme is that the integral type thermal insulation building at least uses one of an inorganic thermal insulation structure layer and an inorganic thermal insulation layer, wherein the inorganic thermal insulation structure layer is formed by combining one or two of inorganic thermal insulation load-bearing concrete and inorganic thermal insulation load-bearing building blocks; and the inorganic thermal insulation load-bearing concrete comprises the following components in a mixing weight ratio (kg/m<3>) of concrete composite light bone admixture to cement to sandto stone to porcelain granule to fly ash to water to concrete admixture of (6-225):(200-800):(300-700):(500-1,600):(150-650):(10-600):(80-400):(0.1-200). The integral type thermal insulation buildingcan be widely applied to the technical field of buildings.

The invention relates to an ultra-hydrophilic-superoleophobic reduced graphene oxide filtering membrane and use, and belongs to the technical field of separation membrane preparation. First, grapheneoxide and nano-zinc oxide are added to distilled water and ultrasonically dispersed; a dopamine solution containing dopamine hydrochloride is added and mechanically stirred; the mixed solution is thensuction-filtered and deposited onto the surface of a mixed cellulose ester membrane by vacuum suction filtration, and the ultra-hydrophilic-underwater superoleophobic unsupported reduced graphene oxide filtering membrane is obtained by drying and self falling. The reduced graphene oxide membrane has the advantages of high water permeation selectivity, flux and stability, and membrane pollution resistance, can effectively separate oily wastewater, provides an efficient, environmentally friendly and economic technical means, and has important practical significance.

The invention discloses a method for counting vehicle axles based on steel-rail deformation or stress parameters. The method comprises the steps as follows: a sensor test point is firstly disposed on a steel rail, the sensor test point is provided with a sensor used for inducing the steel-rail deformation or the stress, and the sensor test point sets the threshold value of the sensor; when a wheel runs over the steel-rail where the sensor is arranged, the sensor records the occurrence of the status if the steel-rail deformation or the stress excesses the threshold value; and the number of the vehicle axles is determined according to the status messages. The solution of counting the vehicle axles provided by the invention is achieved by utilizing the sensor such as a fiber grating or an electrical strain foil, and the method preferentially selects an indirect measuring mode. Therefore, the method can technically avoid the problems existing in the traditional system for counting the vehicle axles, and the method has high stability and strong anti-interference ability.