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64results about How to "Verify suitability" patented technology

Test system for information acquisition wireless downlink channel network

The invention discloses a test system for an information acquisition wireless downlink channel network, which comprises a host machine, a concentrator shielding box connected with the host machine, and a plurality of assemblies which include a variable attenuator, a combining network module connected with a radio frequency cable of the variable attenuator, a collector shielding box connected to the radio frequency cable of the combining network module, wherein the assemblies and a route build the hierarchy and the route matched with a wireless network according to the hierarchy of the wireless to be tested, the variable attenuator of the assembly in the first network hierarchy is connected with the concentrator shielding box through the radio frequency cable; the variable attenuator of the assembly below the second network hierarchy is connected to the combining network module of the former hierarchy of the assembly through the radio frequency cable; a connection serial port is arranged the host and the concentrator shielding box; and the host can control the transmission distance of the signals in a radio frequency cable channel in the multi-wireless network hierarchy and route by adjusting attenuation amplitude of the variable attenuator, further adjusting the wireless hierarchy and the route.
Owner:STATE GRID CORP OF CHINA +2

On-board router simulation method of delay-tolerant network

The invention provides an on-board router simulation method of a delay-tolerant network. The on-board router simulation method of the delay-tolerant network comprises the steps that (1) an on-board router model is constructed by combining a CCSDS and a DTNRG, and feasibility and validity verification is conducted in an OPNET; (2) conversion between a virtual data stream and a real data stream is achieved based on an SITL interface of the OPNET, and the processing capacity of a gateway is verified; (3) relevant inter-satellite and satellite-to-ground data in a network topology are obtained through an STK and are introduced into simulation software for simulation of an inter-planetary network; (4) relevant settings such as the delay and the error rate are conducted on a network damage instrument, and a spatial link is simulated. The on-board router simulation method of the delay-tolerant network has the advantages that the on-board router model is provided by organizing existing space communication protocol systems, and preparation is made for realizing a DTN protocol system in China and studying the key technology of a spatial information network; due to the combination of software and hardware, real simulation of the environment of a satellite network is achieved, and the adaptability of an on-board router to the spatial environment can be verified easily.
Owner:WUHAN UNIV

Optimal maintenance decision method of power transmission and transformation equipment based on Markov decision process

The invention discloses an optimal maintenance decision method of power transmission and transformation equipment based on a Markov decision process. The method comprises that a state transfer relation diagram, of transfer relation among different states, of the power transmission and transformation equipment is established; a state maintenance model of the power transmission and transformation equipment is established according to the state transfer relation diagram of the power transmission and transformation equipment; the Markov decision process is used to solve the stable-state probabilities of different states of the power transmission and transformation equipment; a function relation between a maintenance strategy and pay corresponding to the maintenance strategy is established; a Markov based maintenance decision model of the power transmission and transformation equipment is established by taking maximization of certain function value of a pay sequence in the maintenance strategy as a sequence decision problem; and according to the stable-state probabilities of the different states of the power transmission and transformation equipment, a strategy iteration method is used to obtain an optimal maintenance strategy by solving. The method has the advantages that the Markov decision is used to make compromise between the maintenance cost and fault loss, the optimal maintenance decision is obtained, and reference is provided for maintenance deciding staff.
Owner:ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY +3

Design response spectrum based floor structure dynamic response testing method under walking loading

ActiveCN104101472AAccurate dynamic response analysisAccurate estimateVibration testingResponse spectrumEngineering
The invention relates to a design response spectrum based floor structure dynamic response testing method under walking loading. The design response spectrum based floor structure dynamic response testing method under the walking loading comprises (1) collecting a large amount of single-people walking load curves and forming into an actual measurement loading database; (2) inputting the actual measurement loading database to a standard excitation system after the actual measurement walking loading data is performed on normalization processing to be performed on time-procedure analysis and calculating to obtain an acceleration response spectrum of the actual measurement walking loading; (3) classifying with testers as objects, performing statics and fitting with an external envelope line of a tester response spectrum serving as a representative curve and constructing a complete piecewise function expression for the design response spectrum; (4) calculating dynamic response of every order vibration mode of the floor structure under the walking loading, combining the dynamic responses of the orders through a square and square root method and finally obtaining the floor dynamic response. Compared with the prior art, the design response spectrum based floor structure dynamic response testing method under the walking loading can accurately estimate the acceleration response of the floor structure under the walking loading.
Owner:TONGJI UNIV ARCHITECTURAL DESIGN INST GRP CO LTD

Indoor three-dimensional point cloud automatic registration method for pole extraction

According to an indoor three-dimensional point cloud automatic registration method for pole extraction, on the premise of avoiding network construction and normal direction estimation of point cloud data, automatic registration of multi-station ground laser scanning point cloud data in an indoor scene of a building is achieved, and the method mainly comprises two parts of pole extraction and point cloud registration. The method is analyzed and verified by using real indoor point cloud data of a building, registration parameter calculation is performed on multiple groups of point cloud data, a registration result is compared with a result calculated through a manual target selection mode, and the precision and reliability of the method are further verified. According to the point cloud automatic registration method based on pole extraction provided by the invention, the reliability and the precision meet the working requirements, the target does not need to be manually arranged, the parameter setting is simple, and the automation degree is high.
Owner:王程

Method for realtime online verification of complex traffic control algorithm

The invention discloses a method for realtime online verification of a complex traffic control algorithm. According to the method, a traffic simulation software module, a database module and an algorithm implementation and evaluation module are provided, traffic state information can be acquired in real time and be provided to photo-realistic traffic control equipment under the condition of simulation, a traffic control scheme is generated by the photo-realistic traffic control equipment according to a verified algorithm and is applied to a simulation environment again, and realtime online verification is performed on the complex traffic control algorithm. Compared with the prior art, the method can be used for performing realtime online simulation verification on the complex traffic control algorithm, so guarantee is provided for the safe and effective application of the complex traffic control algorithm in reality; meanwhile, a method for online algorithm optimization is provided for algorithm researchers, and a practical and effective way is provided for future research work.
Owner:ZHEJIANG UNIV +1

Shore base simulation platform system based on seafloor observatory network

The invention discloses a shore base simulation platform system based on a seafloor observatory network. The shore base simulation platform system is built according to the actual conditions of a seafloor observatory network framework, a cable actual parameter, a breakdown generation mode, an operating condition and the like. The shore base simulation platform system comprises a shore base power supply, 7n impedance analog circuits wherein n is between 1-3, node switch devices, a main junction box, a secondary junction box and an artificial load. Every seven impedance analog circuits are in a group, the node switch devices can be accessed between every two groups of impedance analog circuits, and output ends of the node switch devices are sequentially connected with the main junction box and the secondary junction box. The shore base simulation platform system can be used for simulation test of the transmission mode, power transmission characteristic, cable influence, power distribution structure, load condition, breakdown diagnosis and the like of devices of the seafloor platform before the devices enter into water, and verifying the adaptability and improving the reliability, and thus has great significance to a seafloor platform which can not be maintained frequently, promotes the seafloor observatory network to be further developed and deepened, and prolongs the service life.
Owner:ZHONGTIAN TECH MARINE SYST CO LTD

Method for establishing three-dimensional electromagnetic breast simulation model on basis of clinical MRI (magnetic resonance imaging) images

The invention relates to a method for establishing a three-dimensional electromagnetic breast simulation model on the basis of clinical MRI (magnetic resonance imaging) images. The method includes the step of (1) performing stretching processing on each breast section image by a bicubic interpolation method; (2) stacking breast sections subjected to the stretching processing sequentially to obtain a three-dimensional pixel-point breast array; (3) obtaining a peripheral outline of a breast model; (4) subjecting breast tissue to discrete division; (5) obtaining a peripheral outline of a thoracic cavity, and determining a part, positioned within the peripheral outline of the thoracic cavity, of the breast model to be the thoracic cavity; (6) assigning different electrical property values for different breast tissue obtained in the step (4), and establishing the electromagnetic breast simulation model. The method for establishing the three-dimensional electromagnetic breast simulation model on the basis of the clinical MRI images has the advantages that the established breast model is capable of morphologically reflecting breasts in aspects of shape and internal tissue, such as fat, glands and the thoracic cavity.
Owner:TIANJIN UNIV

Floor system vibration response computing method under jumping loads

ActiveCN104112071AEstimating Acceleration ResponseAccurate dynamic response analysisSpecial data processing applicationsSystem structureResponse spectrum
The invention relates to a floor system vibration response computing method under jumping loads. The floor system vibration response computing method under the jumping loads includes the steps that (1) a large number of single jumping load curves are collected to form an actually measured jumping load data base; (2) actually measured jumping load data are normalized and then are input into a standard excitation system for time-procedure analysis, and an acceleration response spectrum of the actually measured jumping loads is obtained through computation; (3) classification is carried out with testers as objects, statistics and fitting are carried out with an outer envelope line of a tester response spectrum as a representative curve, and an integral piecewise function expression of a design response spectrum is built; (4), a power response of each order of vibration mode of a floor system structure under the jumping loads is computed through the design response spectrum, the power responses of all orders are combined according to an SRSS method, and floor system power responses are finally obtained. Compared with the prior art, the floor system vibration response computing method can estimate the acceleration response of the floor system structure under the jumping loads rapidly and accurately.
Owner:TONGJI UNIV ARCHITECTURAL DESIGN INST GRP CO LTD

Sensitive probe as well as preparation method and method for detecting salmonella enteritidis by virtue of sensitive probe

ActiveCN107478833AHigh sensitivityFulfills requirements for diagnostic assaysMaterial analysisEmulsionMicrosphere
The invention discloses a sensitive probe as well as a preparation method and a method for detecting salmonella enteritidis by virtue of the sensitive probe, relates to a probe, a preparation method and application of the probe, and aims to solve the problems of high cost, instability, high deactivation rate of an antibody and poor sensitivity of an existing probe. The sensitive probe is prepared from antibiotics and a signal carrier. The preparation method comprises the following steps: 1, preparing yellowish-brown emulsion; 2, preparing a carboxylated immunomagnetic bead; 3, preparing an activated magnetic microsphere; 4, adding a resuspension solution for storage. The method for detecting the salmonella enteritidis by virtue of the sensitive probe comprises the following steps: 1, preparing an immunochromatographic test strip for the salmonella enteritidis; 2, mixing liquid to be detected and the sensitive probe for incubation, adding dropwise a mixed solution onto a sample pad of the immunochromatographic test strip for the salmonella enteritidis, performing reaction for 10 minutes, and reading a result. According to the sensitive probe, the preparation method and the detection method, only one antibody is struck on a nitrocellulose membrane for direct detection, so that the cost is greatly reduced, and simplicity and convenience are achieved; the sensitive probe, the preparation method and the detection method are applied to detection of the salmonella enteritidis.
Owner:NORTHWEST A & F UNIV

A method for measuring the rolling risk degree of an aircraft after the aircraft encounters a trailing vortex

The invention discloses a method for measuring the rolling risk degree of an airplane after the aircraft encounters a tail vortex. The method comprises the following steps that the initial vortex ringquantity Gamma 0 and the tangential speed V Theta (r) of the front tail vortex are calculated; Based on a strip-shaped band method, simplifying the aircraft into wings, and calculating a trailing vortex induced moment M borne by a rear aircraft; And adopting the rolling torque coefficient RMC to measure the rolling risk degree of the aircraft encountering the tail vortex, and calculating the rolling torque coefficient RMC according to the induced torque M of the tail vortex. According to the method, a strip-shaped band method is used for researching and analyzing wake flow induction torque, an RMC model for measuring the encountering severity degree is established, the RMC value obtained through calculation and the RMC value under the ICAO interval standard have the good fitting degree, the applicability of the model is verified, and the method can be used for safety analysis of an airplane encountering wake flow; The RMC model can provide research basis for wake flow safety intervalstandard reduction between specific aircrafts in operation, so that the safety distance when the aircrafts approach is better provided.
Owner:CIVIL AVIATION FLIGHT UNIV OF CHINA +1

Response spectrum method used for analyzing floor system vibration response under bounce load

The invention relates to a response spectrum method used for analyzing a floor system vibration response under the bounce load. The method comprises the steps that (1), a large number of curved lines of the single bounce load is connected to form an actual measured bounce load data base; (2), actual measured bounce load data are normalized and input into a standard excitation system, time-procedure analysis is carried out on the data, and an acceleration response spectrum of the actual measured bounce load is obtained through calculation of the data; (3), testers as objects are classified, outscourcing lines of response spectrums of the testers serve as the representative curved lines and are counted and fitted to construct integral piecewise function expressions of the designed response spectrums; (4), by means of the designed response spectrums, a value of a power response of each vibration mode of a floor system structure under the bounce load is calculated, combination is carried out according to the combined mode of a square method and a square root or complete square method, and finally the power response of the floor system is obtained. Compared with the prior art, the method can accurately and fast estimate the acceleration response of the floor system structure under the bounce load.
Owner:TONGJI UNIV ARCHITECTURAL DESIGN INST GRP CO LTD

Determination method of sensibility of influence factors of anchoring force of soil anchors

The invention discloses a determination method of sensibility of influence factors of anchoring force of soil anchors. The method comprises the steps that firstly, a soil-anchor anchoring-force prediction model is selected, and input quantities and output quantities of the prediction model are determined, wherein the influence factors of the anchoring force of the M soil anchors and the anchoring force of the soil anchors are used as the M input quantities and the M output quantities of the soil-anchor anchoring-force prediction model respectively; secondly, a training sample set is obtained, wherein in-situ test data of the N soil anchors are collected, and the in-situ test data of each soil anchor are used as one training sample; thirdly, the soil-anchor anchoring-force prediction model is built and trained; fourthly, a multilevel and multi-factor orthogonal test is carried out in the steps of inputting design parameters of the soil anchors, building an orthogonal table, obtaining samples of the orthogonal test, predicting the anchoring force, organizing predicted values of the anchoring force and determining the sensibility. The method has the simple steps, is reasonable in deign, convenient to implement and good in using effect, and can be used for easily, conveniently, rapidly and accurately completing a determining process of the sensibility of the influence factors of the anchoring force of the soil anchors.
Owner:CHANGAN UNIV

Distributed Generation Placement (DGP) method considering dynamic path optimization of active distribution system (ADS)

The invention relates to a distributed power source configuration method considering dynamic path optimization of an active distribution system, comprising the following steps: 1) establishing a double-layer optimal configuration model of the distributed power source considering dynamic path optimization of the active distribution system; 2) according to the improved OFCMC method, the dynamic pathoptimization problem of the active distribution system is transformed into a static path optimization problem in which C representative load data are used as clustering centers; 3) the double-layer optimal configuration model of the distribute power source is solved to obtain the optimal configuration scheme. Compared with the prior art, the invention has the advantages of considering the operation dispatch factor, reasonable modeling, good applicability of the scheme and the like.
Owner:SHANGHAI UNIVERSITY OF ELECTRIC POWER

Mechanism time-variation reliability analysis method

The invention discloses a mechanism time-variation reliability analysis method, which is applied to the field of mechanism time-variation reliability. For the problem that actual engineering reliability cannot be described completely and accurately in the prior art, effective diffusion points on upper and lower boundaries are solved through an envelope equation; uncertainty random information of non-normal distribution is adopted as a random variable input; kinematic error sample points corresponding to the diffusion points under the uncertainty random variable input are obtained; correlationof the kinematic error sample points corresponding to the diffusion points is described through a copula function; and multidimensional joint probability density functions corresponding to the diffusion points are built through a characteristic of multidimensional distribution function decomposition of a vine-copula function, so that a definite integral is solved for obtaining the time-variation reliability. Therefore, a conventional normal distribution hypothesis is popularized as the non-normal distribution; and the method has relatively high practical values and relatively strong engineering significance.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA

In-situ test method and structure for deeply-buried soft-rock tunnel

ActiveCN104088666AFully consider the economyFully consider availabilityMining devicesStructure of the EarthDistribution characteristic
The invention provides an in-situ test method for a deeply-buried soft-rock tunnel. The in-situ test method comprises the first step of conducting sampling on an early-stage exploration tunnel to obtain distribution characteristics of in-situ stress fields, the second step of calculating and determining parameters of a simulation test tunnel, the third step of excavating and expanding a size effect transition section, the fourth step of calculating and determining positions of monitoring sections, the fifth step of arranging an observation branch tunnel and pre-burying monitoring instruments, the sixth step of excavating the simulation test tunnel, and the seventh step of conducting regular observation through the monitoring instruments. The invention further provides an in-situ test structure for the deeply-buried soft-rock tunnel. The in-situ test structure for the deeply-buried soft-rock tunnel is established according to the in-situ test method. The in-situ test structure comprises the simulation test tunnel, the early-stage exploration tunnel and the observation branch tunnel. By the adoption of the in-situ test method and structure, anisotropism and size effects of soft rock are truly represented, a large quantity of measured data and test information of the properties of surrounding rock can be obtained, the uncertain factors that deeply-buried soft rock are low in strength and prone to softening with water, and a high deeply-buried cave section is hard to form are avoided, the defects of existing monitoring methods and tests are effectively overcome, and a reliable data support is provided for analysis of stability of the tunnel.
Owner:POWERCHINA HUADONG ENG COPORATION LTD

Dangerous goods transportation path planning method under uncertain time-varying road network

The invention discloses a dangerous goods transportation path planning method under an uncertain time-varying road network. The method comprises the following steps of establishing a dangerous goods transportation planning model considering time-varying characteristics and uncertainty of road conditions and population density information, introducing time-varying fuzzy variables into the model to describe the influence of the population density on the transportation risk, and meanwhile, considering the influence of the road network real-time traffic condition on the transportation risk, and introducing time-dependent equivalent road length into the model to describe the real-time road condition, performing ambiguity resolution by using an opportunity constraint planning method, and finally, solving a simulation result by applying a PSO algorithm, and verifying the applicability of the model by analyzing a numerical instance solving result. According to the method, a path planning scheme with relatively low road risk can be obtained, and compared with a traditional deterministic model, the method has better applicability.
Owner:HANGZHOU DIANZI UNIV

Method for carrying out positioning in-orbit test authentication based on navigation satellite leakage signal

The present invention provides a method for carrying out positioning in-orbit test authentication based on a navigation satellite leakage signal. Firstly, an in-orbit test flight height is determined, the relative position relation among a detector, a navigation satellite and the Earth is calculated, the angle of an any position relative to Earth vector and detector vector of the navigation satellite is calculated according to the position relation of the detector, the navigation satellite and the Earth, and the visibility of the navigation satellite is judged. According to the navigation satellite visibility judgment result, the height range of boot working and boot time of a satellite-borne navigation receiver are determined, according to the navigation visibility judgment result, an in-orbit flight attitude is analyzed, and the wave beam angle range of a GNSS navigation receiving equipment receiving antenna is determined. The receiving condition of the navigation leakage signal and a navigation positioning result are recorded in an orbit test. The receiving ability of the navigation leakage signal of the GNSS navigation receiver and the influence on the navigation performance are compared and analyzed. The problems of the comprehensive functional performance testing of the navigation satellite leakage signal receiving equipment of deep-space exploration and high-Earth orbit satellite navigation satellites and the system design of positioning by using the navigation satellite leakage signal are solved.
Owner:BEIJING INST OF SPACECRAFT SYST ENG

Initial value calculation method suitable for large-scale data load flow calculation

The invention provides an initial value calculation method suitable for large-scale data load flow calculation. The method comprises the following steps: (1) presetting a balance node; (2) carrying out load flow calculation simulation; (3) judging whether the result is convergent, carrying out the step 4 if the result is convergent, otherwise, the process is over; (4) changing the preset balance node into an ancestor node; and (5) carrying out load flow calculation. The initial value calculation method suitable for large-scale data load flow calculation, provided by the invention, analyzes the reasons of load flow calculation problems of a large-scale power network and improves the Newton method on the base of the conventional calculation method according the condition of actual demands so as to solve the problem that the data load flow calculation of the large-scale power network is not convergent.
Owner:CHINA ELECTRIC POWER RES INST +2

Wind turbine generator cut-in/cut-out wind speed optimization method and system and equipment medium

The invention discloses a wind turbine generator cut-in / cut-out wind speed optimization method and system and an equipment medium, and the method comprises the steps: carrying out the governance analysis of the operation big data of a wind turbine generator, and building a power curve function of the power generation capability of the wind turbine generator; obtaining a wind speed distribution function model; according to the wind speed distribution function model and the power generation capacity power curve function of the wind turbine generator, calculating the annual power generation capacity of the generator; counting the actual operation state big data of the wind speed of the unit at a certain cut-in wind speed and a certain cut-out wind speed, and obtaining a relation function between the cut-in / cut-out wind speed and fatigue loads borne by the unit and main components through calculation of the actual operation state big data; taking the cut-in wind speed and the cut-out wind speed as independent variables, and taking the required unit power generation capacity and the fatigue impact load as targets, and solving the cut-in / cut-out wind speed meeting the requirements; or taking the demanded generating capacity as a target, using the constraint preference that the fatigue damage value is smaller than the design value, and converting the two targets into a single-target function for solving the demanded generating capacity for optimizing and solving.
Owner:HUANENG HUAJIALING WIND POWER CO LTD +1

Method for generating physical identifier in storage device and machine-readable storage medium

A method and system for generating a physical identifier in a storage device that includes a plurality of storage regions is provided. The method includes determining a number of reference storage regions for uniquely identifying the storage device; comparing the number of reference storage regions to a threshold; generating auxiliary storage regions for uniquely identifying the storage device, such that a number of the auxiliary storage regions corresponds to a result of the comparison; generating location distribution information of the reference storage regions and auxiliary storage regions; and storing the location distribution information in the storage device.
Owner:SAMSUNG ELECTRONICS CO LTD

Rigid-flexible coupling multi-motor system

The invention discloses a rigid-flexible coupling multi-motor system. The rigid-flexible coupling multi-motor system comprises an upper computer, a main controller, a first motor driver, a first torque sensor, a first motor, a first encoder, a second motor, a second encoder, a second torque sensor, a second motor driver, a second driving roller, a tension sensor, a belt, a first driving roller, arigid coupling, a third torque sensor, a third motor, a third encoder, a third motor driver, a connecting shaft and a signal wire, wherein the two motors are rigidly and coaxially connected to achieverigid coupling between the two motors; the two motors are connected by adopting belts at two ends, so that the rigid-flexible coupling connection between the two motors is achieved; and the physicalexperiment research of the coaxial connection of the belt conveyor and the double motors driven at two ends is achieved at the same time.
Owner:CHINA UNIV OF MINING & TECH

Elevator intelligent type selection system and method of BIM model and medium

The invention discloses an intelligent elevator model selection system based on a BIM model. The system comprises a building three-dimensional visualization module, an elevator three-dimensional visualization module, a data processing module and a model selection output module, and the building three-dimensional visualization module is used for generating a BIM model of a building or a structure according to a design drawing of the building or the structure to be installed of a selected elevator; the elevator three-dimensional visualization module is used for generating a three-dimensional visualization model of the elevator according to the selected design drawing of the elevator; the data processing module is used for carrying out matching processing on the BIM model of the building or the structure and the selected elevator three-dimensional visualization model, judging whether the selected elevator is installed on the building or the structure to meet the regulations of technical laws and regulations and standards or not, and obtaining a model selection conclusion; and the model selection output module is used for outputting a model selection conclusion. The system can visuallyverify the adaptability of the specification and model of the selected elevator to the building, and reduces the delivery delay caused by elevator engineering and the economic loss caused by rectification.
Owner:长沙纵横电梯工程有限公司

Flexible mechanical arm experiment system and control method

The invention discloses a flexible mechanical arm experiment system and a control method. The system comprises a main controller unit, a host, a flexible mechanical arm controlled main body and a vibration signal acquisition module. According to the invention, the operation is simple; effects are obvious; by combining computer simulation and real-time control, suitability and practicability of design of the control system can be effectively verified; the vibration signals are displayed graphically, and parameters in the algorithm can be modified and controlled online; signals of the flexible mechanical arm can be measured online and the system has anti-interference ability and a self-protection function; all signals acquired by the main controller can be uploaded and stored in a local disk, so it is convenient for an experimenter to carry out data analysis and post processing on the experiment results; and problems of poor suitability and complex operation of the flexible mechanical arm experiment system are solved.
Owner:CHINA UNIV OF MINING & TECH

Lower view angle adjustable mechanism for radar seeker hanging flight

The invention relates to a lower visual angle adjustable mechanism for radar seeker hanging flight, and belongs to the technical field of space flight and aviation. The mechanism is composed of an extension hanging frame and an installation platform with an adjustable lower visual angle. The extension hanging frame is composed of an upper truss, an extension truss and a lower truss, and the three trusses are welded and formed and then connected through bolts, so that disassembly, assembly and transportation are convenient. The installation platform is composed of two front supporting lugs, three rear supporting lugs, a rotating shaft, two sliding blocks and an installation plate. Screw fixing holes are formed in the two front support lugs at an interval of 5 degrees, so that a lower visual angle can be adjusted at an interval of 5 degrees in a range of 0-minus 30 degrees, and the mounting plate is used for mounting a to-be-tested seeker, a test instrument or monitoring equipment and other parts to be tested.
Owner:CNGC INST NO 206 OF CHINA ARMS IND GRP

Retaining wall earthquake soil pressure time history calculation method based on energy dissipation principle

ActiveCN111046480AAccurate and reliable seismic designHigh precisionGeometric CADClassical mechanicsEnergy based
The invention provides a retaining wall earthquake soil pressure time history calculation method based on an energy dissipation principle. The method comprises the steps of: establishing a calculationmodel to respectively compute the earthquake inertia force and gravity of a sliding soil wedge body and supporting force of the wall to the sliding soil wedge body; based on an energy dissipation principle, respectively calculating to obtain the power and the internal energy dissipation of the external force of the sliding soil wedge body; establishing a balance equation based on an energy conservation principle; calculating and obtaining the maximum time history of the retaining force of the corresponding retaining wall to the sliding soil wedge body under the continuous action of the earthquake, namely the solved earthquake soil pressure time history; and performing drawing to obtain a seismic soil pressure time-history curve. According to the invention, a slip crack surface is supposedto be an oblique straight line in traditional earthquake soil pressure calculation, an earthquake action is simplified into an inertia force with constant magnitude and invariable direction, the influence of earthquake waves on earthquake soil pressure when the earthquake waves are transmitted in a slope body is not considered, most of the obtained earthquake soil pressure is a constant value anddistorted, and a series of problems that how the earthquake soil pressure changes along with time cannot be obtained are solved.
Owner:SOUTHWEST PETROLEUM UNIV

Device and method for testing influences of direct-current transmission line harmonic on noise of communication line

The invention relates to a designed device for testing influences of direct-current transmission line harmonic on noise of a communication line. The device comprises an anechoic chamber, a twin-twisted telephone line, a copper wire, a harmonic generator, a resistor R1, a telephone, an exchanger, two non-inductive resistors and two psophometers, the twin-twisted telephone line, the copper wire, the harmonic generator, the resistor R1, the telephone and the exchanger are arranged inside the anechoic chamber, two ends of the copper wire are both connected with the harmonic generator, the resistor R1 is serially connected on the copper wire, one end of the twin-twisted telephone line is connected with the telephone while the other end thereof is connected with the exchanger, the exchanger is further connected with a remote telephone arranged outside the anechoic chamber, the two non-inductive resistors are used for replacing the telephone and the remote telephone during test, and the two psophometers are used for testing equivalent noise electromotive force of the two non-inductive resistors respectively. By the device, the influences of the direct-current transmission line harmonic on the noise of the communication line can be tested indoors, and accordingly testing experiment cost is lowered, and precision of research results is improved.
Owner:CHINA ELECTRIC POWER RES INST +1

A Simulation Method of On-Star Router for Delay Tolerant Network

ActiveCN103825761BVerify suitabilityNetworks interconnectionData streamSpace communications
The present invention proposes an on-board router emulation method of a delay tolerant network, comprising: 1. Combining CCSDS and DTNRG to construct an on-board router model, and verifying feasibility and effectiveness in OPNET; 2. Realizing virtualization based on the SITL interface of OPNET Conversion of data streams and real data streams to verify gateway processing capabilities; 3. Use STK to obtain interstellar and star-to-earth link data in the network topology, and import simulation software to simulate interstellar networks; 4. Delay and error codes for network damage meters rate and other related settings to simulate space links. Therefore, the present invention has the following advantages: the integration of the existing space communication protocol system has proposed the router model on the star, and some preparatory work has been done for the system-level realization of my country's DTN protocol system and even the key technology research of the space information network; the combination of software and hardware is more real The environment of the satellite network is simulated, which is helpful to verify the applicability of the on-board router to the space environment.
Owner:WUHAN UNIV
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