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33results about How to "Realize reasonable choice" patented technology

Method and system for realizing content delivery network based on software defined network

The invention discloses a method and a system for realizing a content delivery network (CDN) based on a software defined network (SDN). The method comprises the steps of respectively adding an application function, a control function and a network entity resource of the CDN into an application layer, a control layer and a data forwarding layer of the SDN; when a CDN application request is received, generating resource requirement and service orchestration information by the application layer of the SDN according to the CDN application request, transmitting a reserving request of the resource required by the CDN application to the SDN control layer so that the SDN control layer allocates the resource required by the CDN application, and generating a data transmission content routing table according to network load balance and a path strategy, furthermore generating an L2/L3 forwarding table, and transmitting to the data forwarding layer; and when the data forwarding layer of the SDN receives a content dispensing/delivery operation request, performing related operation of the CDN service according to the L2/L3 forwarding table. According to the method and the system, the system function of the CDN is realized based on the SDN, thereby effectively settling bearing network closure, hardware dedication and management problem in the CDN, and realizing reasonable selection for CDN application network resource, engine and forwarding path.
Owner:ZTE CORP

Effective construction safety monitoring method.

The invention relates to an effective construction safety monitoring method. An industrial control computer, a central controller, a digital camera, a deformation monitoring sensor group, a monitoringpoint internal-stress collection module, Beidou modules, a prediction analysis module and a three-dimensional-simulation analysis module which are mutually connected are installed at a building construction site. The central controller controls the digital camera, the deformation monitoring sensor group and the monitoring point internal-stress collection module for data collection, collected dataare sent to the prediction analysis module and the central processor through Beidou modules, and analysis and prediction of building construction conditions are carried out through the prediction analysis module and an expert evaluation module; and a three-dimensional model of building construction is established through the three-dimensional-simulation analysis module, and three-dimensional simulation is carried out through inserting a virtual actuator and a virtual sensor in the three-dimensional model. The method can be used in various construction environment sites, eliminates safety information hidden-troubles in construction processes, effectively detects and manages the construction sites, and maintains normal operating of detection systems of the construction sites.
Owner:XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY

Grading method and system suitable for recycled asphalt mixture, medium and equipment

The invention provides a grading method and system suitable for recycled asphalt mixture, a medium and equipment. The method comprises the following steps: determining the particle sizes and respective passing rates of a minimum sieve mesh, a nominal maximum sieve mesh and a coarse and fine aggregate boundary point sieve mesh; obtaining grading curves of a coarse aggregate mixture and a fine aggregate mixture according to a Bloss grading curve model, obtaining grading curve model parameters by utilizing the determined sieve mesh diameters and passing rates of the sieve meshes, and obtaining apreliminary recycled asphalt mixture grading curve; and optimizing the passing rate of each sieve mesh according to the coarse aggregate mixture skeleton clearance rate in the coarse aggregate mixtureand the asphalt mixture to obtain an optimized recycled asphalt mixture grading curve which is used for grading design of the coarse and fine aggregate mixture. A continuous graded asphalt mixture with a suspension compact structure and a framework compact structure can be designed, the porosity of the recycled asphalt mixture can be effectively reduced, and the defects that the porosity of the recycled asphalt mixture is too large, and a grading curve deviates out of the upper limit and the lower limit due to grading refinement are overcome.
Owner:SHANDONG JIAOTONG UNIV

Direct current transmission system reliability optimization decomposition method, apparatus and device, and medium

The invention discloses a direct current transmission system reliability optimization decomposition method. The method comprises the steps of: obtaining a reliability optimization decomposition model,wherein the reliability optimization decomposition model comprises a target function and a constraint condition; obtaining reliability parameters of direct current transmission system elements to obtain a reliability parameter vector, wherein the reliability parameter vector comprises the minimum value and the maximum value of the reliability parameter; and according to the reliability parametervector, the reliability optimization decomposition model and a preset convergence precision, employing a method of bisection to obtain the optimal reliability parameter. Based on the change rule of the system reliability with the monotonic change of element reliability, a bisection method solution algorithm of the optimization decomposition of the hybrid multi-terminal direct current transmissionsystem reliability is provided. On the premise of giving the system reliability index, the bisection method is employed to achieve optimization decomposition of the power system reliability for the hybrid multi-terminal direct current transmission system to perform reliability distribution and achieve the global optimization so as to achieve reasonable selection of the element reliability parameters.
Owner:ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD +1

Method for selecting measuring head of three-coordinate measuring machine

The invention discloses a method for selecting a measuring head of a three-coordinate measuring machine. The method comprises the following steps of: sequentially dividing measurement data, determining the diameter of the measuring head and the length of a measuring needle, preliminarily determining a measurement angle, combining the measurement angles, extracting the same measurement point positions of the measuring head and placing the same measurement point positions in the same measurement file; in the measurement file, sequencing the measurement points according to the shortest path principle to complete local path planning; and connecting the head and tail measurement points in different measurement files in series according to the principle of shortest distance to complete sorting, so that the shortest walking path of the measurement head is ensured. According to the invention, reasonable selection of the diameter of the measuring head, the size of the measuring needle and the measuring angle can be realized, effective acquisition of measuring signals is ensured, planning of a measuring path is completed according to the characteristics of the measuring head, the precision and efficiency of part measurement are ensured, and the practicability is good.
Owner:CHENGDU AIRCRAFT INDUSTRY GROUP

PCIe signal bandwidth determination method, device and equipment

The invention discloses a PCIe signal bandwidth determination method and device, equipment and a computer readable storage medium. The method comprises the following steps: testing to obtain a target frequency point at which the energy spectrum density of a PCIe signal of a to-be-tested transmission link after an output signal of the to-be-tested transmission link is subjected to inverse Fourier transform reaches a preset proportion (determined according to a measurement error demand of the to-be-tested transmission link) of an original signal, and taking the target frequency point as the bandwidth of the PCIe signal of the to-be-tested transmission link; therefore, accurate high-speed signal bandwidth selection is realized; in order to measure the target frequency point, the insertion loss of the standard PCIe signal on the analog transmission link is obtained through testing in advance, and after the insertion loss of the transmission link to be tested is determined, the target analog transmission link is selected to simulate the transmission link to be tested for testing, so the test of signal bandwidth selection is completed in the design stage of the to-be-tested transmission link, and accordingly reasonable selection of PCIe signal bandwidth is realized.
Owner:INSPUR SUZHOU INTELLIGENT TECH CO LTD

A method and system for implementing a content distribution network based on software-defined networking

This application discloses a method and system for realizing CDN based on SDN, including: respectively adding CDN application functions, control functions and network entity resources at the application layer, control layer and data forwarding layer of SDN; including: receiving a CDN application application When , the SDN application layer generates resource requirements and business orchestration information according to the CDN application application, so as to send the reservation application for the resources required by the CDN application to the SDN control layer, so that the SDN control layer can allocate the resources required by the CDN application, combined with network load balancing and The path policy generates the content routing table for data transmission, and then generates the L2 / L3 forwarding table, which is sent to the SDN data forwarding layer; when the SDN data forwarding layer receives the content distribution / delivery operation request, it executes the CDN business according to the L2 / L3 forwarding table related operations. The present invention realizes the system function of CDN based on SDN, effectively solves the complex problems of closed bearer network, exclusive hardware, and management faced by CDN, and realizes reasonable selection of CDN application network resources, engines, and forwarding paths.
Owner:ZTE CORP

Analysis method directly based on convergence time of four-order compass azimuth alignment system

ActiveCN109282831AMeet the requirements of accuracy and azimuth accuracyRealize reasonable choiceMeasurement devicesSystem errorError band
The invention provides an analysis method directly based on the convergence time of a four-order compass azimuth alignment system. An azimuth error frequency domain response of a system error is obtained by finding out a system error; compass azimuth alignment parameters are set; an east gyroscope constant drift frequency domain response function and an initial azimuth error frequency domain response function are obtained; an east gyroscope constant drift time domain response function and an initial orientation error time domain response function are obtained by inverse Laplace transform and are simplified; and convergence time t is inversely solved. The reasonable selection of the compass azimuth alignment related parameters and the accurate control of the compass azimuth alignment convergence time are realized; the problem that a classical two-order compass azimuth alignment system is used for an analogy to the four-order compass azimuth alignment system is solved; the azimuth errorof the four-order compass azimuth alignment system is ingeniously transformed from the frequency domain to the time domain to be studied; the problem that an error band cannot be taken according to the percentage of an initial azimuth error steady-state value is solved; and the requirements on the inertial device precision and the azimuth precision are met at the same time.
Owner:HARBIN ENG UNIV

A detection method of wall breaking rate of food processing machine

The invention discloses a detection method of food processing machine wall breaking rate. The detection method comprises following steps: a material sample is delivered through a preset multi-layer screen mesh and a preset screening instrument for filtering of the material sample, wherein the material sample is obtained through wall breaking processing of a raw material using a food processing machine; after filtering, the dry basis protein content of filter residue on each layer of the preset multi-layer screen mesh, and the volume ratio of the filter residue on each layer of the preset multi-layer screen mesh in the total filter residue are obtained; and the food processing machine wall breaking rate is calculated based on the layer number of the preset multi-layer screen mesh, the dry basis protein content of filter residue on each layer of the preset multi-layer screen mesh, the volume ratio of the filter residue on each layer of the preset multi-layer screen mesh in the total filter residue, and a preset wall breaking rate calculating formula. The detection method can be used for measuring the wall breaking rate in soybean milk food processing process; operation is simple; human factor influence is low; the stability is high; and an evaluation problem of soya-bean milk machine wall breaking rate is solved.
Owner:JOYOUNG CO LTD

Traffic grooming method in hybrid grid optical network and related equipment

ActiveCN112422225ATotal energy consumption is minimizedMinimize total energy consumptionMultiplex system selection arrangementsWavelength-division multiplex systemsGraph EdgeOptical networking
One or more embodiments of the present specification provide a traffic grooming method in a hybrid grid optical network and related equipment. Firstly, an auxiliary graph for energy consumption is generated, different types of auxiliary graph nodes are generated for optical nodes with different grid flexibility in a network, then an auxiliary graph edge is generated in combination with service requirements, and the weight of the auxiliary graph edge is related to an energy consumption model of the nodes. After the auxiliary graph is generated, a minimum weight path is acquired by calculation between the source node and the destination node on the auxiliary graph, and a traffic grooming strategy is selected and executed according to the obtained path. After the traffic grooming operation isfinished, the network resources are updated and the next service request is waited. Based on the energy consumption-oriented auxiliary graph, reasonable selection of different traffic grooming operations such as optical layer grooming and electric layer grooming can be realized, so that the purpose of minimizing the total energy consumption required for bearing services is achieved.
Owner:BEIJING UNIV OF POSTS & TELECOMM

An Intelligent Tunnel Construction Safety Monitoring System

The invention discloses an intelligent tunnel construction security monitoring system comprising a deformation monitoring sensor group, a video data collecting module, an environment monitoring sensor group, a monitoring point internal stress collecting module, a data processing module, a central processing unit, a prediction analysis module, an expert evaluation module, a dangerous action judgment module, a mathematical model building module, a virtual actuator, a virtual sensor and a man-machine operation module. According to the intelligent tunnel construction security monitoring system, omni-directional real-time detecting on a tunnel construction situation is achieved so as to obtain various evaluation results of the tunnel construction situation, detecting results are high in accuracy, additionally, by building a tunnel construction mathematical model, prediction and simulative analysis of the follow-up situation of tunnel construction are conducted, problems in the tunnel construction process can be discovered timely, and a reasonable selection of tunnel construction schemes is achieved; and the intelligent tunnel construction security monitoring system has the function of automatic evaluation of dangerous actions and dangerous environments, and construction safety of construction personnel is further guaranteed.
Owner:HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY

A method, device and equipment for determining the bandwidth of a pcie signal

The application discloses a method, device, device and computer-readable storage medium for determining the bandwidth of a PCIe signal. Through testing, the output signal of the PCIe signal of the transmission link to be tested is inversely Fourier transformed after passing through the transmission link to be tested. The subsequent energy spectral density reaches the target frequency point of the preset ratio of the original signal (depending on the measurement error requirements of the transmission link to be tested), and the target frequency point is used as the bandwidth of the PCIe signal of the transmission link to be tested, so that Realize accurate high-speed signal bandwidth selection; and in order to realize the measurement of the target frequency point, pre-test the insertion loss of the standard PCIe signal on the analog transmission link, and select the target analog transmission link after determining the insertion loss of the transmission link to be tested Lulai simulates the transmission link to be tested for testing, and realizes the test of signal bandwidth selection in the design stage of the transmission link to be tested, thereby realizing a reasonable selection of PCIe signal bandwidth.
Owner:INSPUR SUZHOU INTELLIGENT TECH CO LTD

An Analysis Method Directly Based on Convergence Time of Fourth-Order Compass Azimuth Alignment System

The invention provides an analysis method directly based on the convergence time of the fourth-order compass azimuth alignment system. By finding out the system error, the azimuth error frequency domain response of the system error is obtained, and the compass azimuth alignment parameters are set to obtain the eastward gyro constant value. Drift frequency domain response function and initial azimuth error frequency domain response function, Laplace inverse transform into east gyroscope constant drift time domain response function and initial azimuth error time domain response function and simplification, inverse solution convergence time t. The present invention realizes reasonable selection of relevant parameters of compass azimuth alignment and precise control of convergence time of compass azimuth alignment, and solves the problem of using a classic second-order compass azimuth alignment system to analogy to a fourth-order compass azimuth alignment system. The azimuth error of the fourth-order compass azimuth alignment system is transformed from the frequency domain to the time domain, which solves the problem that the error band cannot be taken as a percentage of the steady state value of the initial azimuth error, and at the same time meets the requirements for the accuracy of the inertial device and the azimuth angle accuracy requirements.
Owner:HARBIN ENG UNIV

Detection method of food processing machine wall breaking rate

The invention discloses a detection method of food processing machine wall breaking rate. The detection method comprises following steps: a material sample is delivered through a preset multi-layer screen mesh and a preset screening instrument for filtering of the material sample, wherein the material sample is obtained through wall breaking processing of a raw material using a food processing machine; after filtering, the dry basis protein content of filter residue on each layer of the preset multi-layer screen mesh, and the volume ratio of the filter residue on each layer of the preset multi-layer screen mesh in the total filter residue are obtained; and the food processing machine wall breaking rate is calculated based on the layer number of the preset multi-layer screen mesh, the dry basis protein content of filter residue on each layer of the preset multi-layer screen mesh, the volume ratio of the filter residue on each layer of the preset multi-layer screen mesh in the total filter residue, and a preset wall breaking rate calculating formula. The detection method can be used for measuring the wall breaking rate in soybean milk food processing process; operation is simple; human factor influence is low; the stability is high; and an evaluation problem of soya-bean milk machine wall breaking rate is solved.
Owner:JOYOUNG CO LTD
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