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Civil engineering construction monitoring system
InactiveCN108038301ARealize all-round monitoringRealize reasonable choiceGeometric CADMeasurement devicesMonitoring systemPhysical model
The invention discloses a civil engineering construction monitoring system which comprises an internal parameter collecting module, an external parameter data collecting module, a central processing unit, a construction condition forecasting module, an expert evaluating module, an alarm module, a sensor data recognizing module, a physical model establishing module, a virtual parameter actuator, avirtual parameter module and a simulating analysis module. By collecting the internal stress data and acceleration data of civil engineering construction and collecting construction sedimentation parameter data, displacement parameter data, gradient parameter data, crack parameter data and deflection parameter data in combination, the all-directional monitoring of the construction situation is realized, the system has a data analyzing function, and the output of the current comprehensive situation of the construction structure can be conducted in real time according to the detected data; by establishing a construction simulating model, the predicting and simulating analysis of the subsequent situation of construction are realized, and the problems in the construction structure can be foundin time.
Owner:SHANDONG INST OF BUSINESS & TECH
Water environment monitoring system
ActiveCN106092195AAchieve forecastRealize simulation analysisMeasurement devicesPhysical modelData acquisition
The invention discloses a water environment monitoring system, which comprises a sensor group, a video data acquisition module, a panoramic video generating module, a man-machine operation module, a central processor, a water environment evaluation module, an expert evaluation module, a physical model building module, a virtual actuator, a virtual sensor and a simulation analysis module. An underwater robot and a detection device are perfectly combined to realize simultaneous detection on water environment conditions in multiple directions, multiple evaluation results of the water environment conditions are obtained, the detection results are high in accuracy, data transmission is carried out via a Beidou short message communication technology, no communication line needs to be erected, the use is convenient, prediction and simulation analysis on subsequent conditions for the water environment are realized through self definition of the water environment physical model, the virtual sensor and the virtual actuator, various water environment treatment schemes can be converted into parameters to act on the built water environment physical model, and reasonable selection on the water environment treatment schemes can be realized.
Owner:杨州 +10
Method and system for realizing content delivery network based on software defined network
ActiveCN105577549AAchieve closureStrong specificityData switching networksContent distributionRouting table
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
Civil-engineering construction monitoring system
InactiveCN106353015AHigh precisionLow costForce measurement by measuring optical property variationMaterial analysis by optical meansRebarExpert evaluation
The invention discloses a civil-engineering construction monitoring system, comprising optical fiber sensor group, environment acquisition module, man-machine operation module, central processing unit, prediction analysis module, expert evaluation module, establishment module of dynamics model, simulation analysis module and virtual sensor. Through the collection of such data as pressure, stress and humidity borne by the reinforcement structure of civil-engineering construction and the weather around and image data of civil-engineering construction, the system realizes all-dimensional real-time monitoring on the building,so as to obtain various evaluation results of the building with high accuracy of detection results; realizes the prediction and stimulation analysis for the follow-up situations of the building through the construction of building dynamic model, so as to found out the problems existing in the building on time, and transforms various treatment schemes into parameters in the established building dynamic model and realizes the reasonable selection for treatment scheme.
Owner:SHAANXI SCI TECH UNIV
Effective construction safety monitoring method.
InactiveCN107944118ARealize reasonable choiceEliminate hidden dangersDesign optimisation/simulationApparatus for force/torque/work measurementThree dimensional modelDigital camera
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
Method and device for implementing assistant parking
ActiveCN106379235AEasy to understandAvoid parkingSignalling/lighting devicesParking spaceComputer science
The invention discloses a method and a device for implementing assistant parking. The method comprises the following steps: (1) acquiring an image of a site where a vehicle is located in real time, and identifying the vehicle position, the type of a parking site and the parking site in the acquired image; (2) determining a display sequence of a plurality of guide frames guiding the vehicle to enter the parting site and a display position of each guide frame according to the type of the parking site and the current parking condition of each parking site; and (3) when one of the parking sites is appointed, displaying multiple guide frames in the image according to the display sequence of the guide frames and the display position of each guide frame of the appointed parking sites, wherein when one guide frame is displayed in the image each time, the next guide frame is displayed while judging that the position of the vehicle enters the guide frame until the position of the vehicle enters the last guide frame. By virtue of the method, a driver can easy know how to park the vehicle to the parking site, so that the operation difficulty during the parking of the vehicle to the parking site is effectively reduced.
Owner:上海为森车载传感技术有限公司
Online safety monitoring system of tailings pond
InactiveCN106989778AHigh precisionRealize reasonable choiceMeasurement devicesData acquisitionPhysical model
The invention discloses an online safety monitoring system of a tailings pond. The system comprises a deformation monitoring sensor group, a video data acquisition module, a monitoring point internal stress acquisition module, a video data processing module, a central processor, a prediction and analysis module, an expert evaluation module, a physical model construction module, a virtual actuator, a virtual sensor and a simulation analysis module. According to the invention, the a circuit is cut off, emergent transmission of data can be performed through the Beidou short message communication technology, so the system is convenient to use; all-around real-time detection can be performed on the conditions of the tailings pond so that various kinds of evaluation results of the conditions of the tailings pond are obtained; the detection results are high in precision, and by constructing a tailings pond physical model, prediction and simulation analysis are performed on following situations of the tailings pond, and problems occurring in the tailings pond can be timely found; and all kinds of tailings pond management schemes can be converted into parameters to be used for the constructed tailings pond physical model, so proper selection of a management scheme of the tailings pond is achieved.
Owner:SHANGLUO UNIV
Grading method and system suitable for recycled asphalt mixture, medium and equipment
ActiveCN111785338AReduce porosityImprove featuresSolid waste managementComputational materials scienceAsphaltPitch blende
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
A groundwater resource online monitoring system
The invention discloses an online monitoring system for groundwater resources, which includes a sensor group, a video data collection module, a monitoring center, a 360-degree phantom imaging module, a simulation module, a virtual sensor, a groundwater situation evaluation module, an expert evaluation module, a display screen and a human body. machine operation module. The present invention transmits data through Beidou short message communication technology, does not need to set up communication lines, is convenient to use, and can perform real-time detection of groundwater in all directions, thereby obtaining various evaluation results of groundwater conditions, and the detection results are highly accurate. And through the construction of the groundwater three-dimensional module, the follow-up situation of groundwater can be predicted and simulated, and various groundwater treatment schemes can be converted into parameters and then applied to the established groundwater three-dimensional model, realizing the reasonable selection of groundwater treatment schemes , At the same time, the data collected by each sensor and camera comes with Beidou positioning data.
Owner:山东清锦环保科技有限公司
Direct current transmission system reliability optimization decomposition method, apparatus and device, and medium
InactiveCN109728593ARealize reasonable choiceImprove reliabilityElectric power transfer ac networkElectric power systemDecomposition
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
Multi-task publisher-oriented crowdsourcing implementation method based on block chain
PendingCN113496350AReasonable choiceReasonable distributionDatabase updatingFinanceEngineeringData mining
The invention discloses a Multi-task publisher-oriented crowdsourcing implementation method based on block chain, and belongs to the technical field of block chains. According to the technical scheme, a user registration contract, a crowdsourcing task creation intelligent contract, a task selection contract, a worker selection contract and a quality evaluation intelligent contract are configured on a block chain platform; based on the configured multiple smart contracts, crowdsourcing release oriented to multiple taskers, confirmation of participants, and evaluation and rewarding of task completion conditions are realized. Aiming at the problems that a traditional crowdsourcing platform is lack of transparency and high cost is needed for participating in a crowdsourcing process, the invention provides a crowdsourcing method for multiple taskers based on a block chain technology. According to the invention, workers can reasonably select crowdsourcing tasks, reasonable issuing of crowdsourcing task rewards is guaranteed, and risks brought to the crowdsourcing task execution process by a traditional centralized platform are avoided.
Owner:成都金融梦工场投资管理有限公司 +1
An urban forest tree preferential planting area selection method and system
InactiveCN109948956AReflect the degree of demandRealize reasonable choiceResourcesUrban forestPopulation density
The invention discloses an urban forest tree preferential planting area selection method and system. The method comprises the steps of obtaining an urban vector layer and dividing the urban vector layer into a plurality of area units; inputting unit population, road area and real forest crown coverage area data of each region to obtain unit population density, road density and real forest crown coverage vector data of each region; performing normalization processing and format conversion to obtain a normalization population density grid layer, a normalization road density grid layer and a normalization real forest tree crown coverage rate grid layer; calculating the priority of each grid unit to obtain a priority PI grid layer; performing priority level division, drawing a PI priority level distribution grid layer, and regarding the region unit with the higher priority level as a region where trees need to be preferentially planted. The method can visually and accurately reflect the demand degree of different regional spaces of a city for urban forest construction, and provides a reliable decision basis for preferential site selection of an urban space forest planting region.
Owner:INST OF FORESTRY CHINESE ACAD OF FORESTRY
Method for selecting measuring head of three-coordinate measuring machine
ActiveCN113203378AEfficient acquisitionEnsure accuracy andMeasurement devicesAlgorithmShortest distance
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
Order processing method and apparatus
ActiveCN107845011ARealize reasonable choiceImprove distribution efficiencyForecastingBuying/selling/leasing transactionsTask completionOrder form
Embodiments of the invention disclose an order processing method and apparatus. A specific embodiment of the method comprises the steps of obtaining a new order group, wherein the new order group comprises at least one new order; according to a preset delivery region and a task completion position of each delivery unit in at least one delivery unit and order information of each new order in the new order group, determining an alternative delivery unit set, wherein the task completion position of the delivery unit is the position of the delivery unit after execution of the allocated order; based on the order information of each new order in the new order group and the preset delivery region and the task completion position of each alternative delivery unit in the alternative delivery unit set, selecting a delivery unit as a target delivery unit from the alternative delivery unit set; and allocating each new order in the new order group to the target delivery unit. The delivery unit canbe reasonably selected and the delivery efficiency is improved.
Owner:BEIJING XIAODU INFORMATION TECH CO LTD
PCIe signal bandwidth determination method, device and equipment
ActiveCN113347067ARealize reasonable choicePrecise high-speed signal bandwidth selectionData switching networksComplex mathematical operationsSignal onEngineering
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 water environment monitoring system
ActiveCN106092195BAchieve forecastRealize simulation analysisMeasurement devicesPhysical modelData acquisition
The invention discloses a water environment monitoring system, which comprises a sensor group, a video data acquisition module, a panoramic video generating module, a man-machine operation module, a central processor, a water environment evaluation module, an expert evaluation module, a physical model building module, a virtual actuator, a virtual sensor and a simulation analysis module. An underwater robot and a detection device are perfectly combined to realize simultaneous detection on water environment conditions in multiple directions, multiple evaluation results of the water environment conditions are obtained, the detection results are high in accuracy, data transmission is carried out via a Beidou short message communication technology, no communication line needs to be erected, the use is convenient, prediction and simulation analysis on subsequent conditions for the water environment are realized through self definition of the water environment physical model, the virtual sensor and the virtual actuator, various water environment treatment schemes can be converted into parameters to act on the built water environment physical model, and reasonable selection on the water environment treatment schemes can be realized.
Owner:杨州 +10
Random access method, wireless access network element and mobile communication system
ActiveCN102170705BImprove access capabilitiesRealize reasonable choiceWireless communicationAccess networkMobile communication systems
The embodiment of the invention discloses a random access method, a wireless access network element and a mobile communication system. The random access method comprises the following steps of: receiving an access request from user equipment (UE); performing antenna compensation calculation on the received access request to obtain an antenna-compensated access request; primarily checking the antenna-compensated access request; and / or performing frequency offset compensation on the data part of the antenna-compensated access request to obtain frequency offset-compensated access request, and performing primary checking on the frequency offset-compensated access request; and if the antenna-compensated access request is primarily checked to be correct, performing the random access of the UE based on the antenna-compensated access request; or if the frequency offset-compensated access request is secondarily checked to be correct, performing the random access of the UE based on the frequency offset-compensated access request. The scheme provided by the embodiment of the invention is favorable for improving random access performance.
Owner:SHANGHAI HUAWEI TECH CO LTD
A method and system for implementing a content distribution network based on software-defined networking
ActiveCN105577549BAchieve closureStrong specificityData switching networksContent distributionPathPing
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
Cell selection method, mobile terminal, and computer-readable storage medium
ActiveCN109005574BRealize reasonable choiceAssess restrictionComputer hardwareInformation repository
The invention discloses a cell selection method, which includes: obtaining a list of cells to be selected, the cell list including at least two cells; obtaining the current signal strength value of each cell in the cell list, and The historical load characterization information of each cell is read in the cell resident information database provided, and the historical load characterization information is used to represent the historical load situation of the cell; according to the current signal strength value and the historical load characterization information , correspondingly calculate the priority value of each cell; compare the calculated priority values of each cell, and select the cell with the highest priority value as the target serving cell to camp on. The invention also discloses a mobile terminal and a computer-readable storage medium. The invention can realize the reasonable selection of the cell, and avoid the mobile terminal from staying in the cell with strong signal and poor actual service quality.
Owner:NUBIA TECHNOLOGY CO LTD
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
ActiveCN108918842BSolve evaluation problemsSimple and fast operationVolume measurement apparatus/methodsBiological testingProcess engineeringDry basis
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
ActiveCN106593534BRealize reasonable choiceReasonable choice hasElectric signal transmission systemsMining devicesMathematical modelDeformation monitoring
Owner:HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
Auxiliary parking implementation method and device
ActiveCN106379235BEasy to understandAvoid parkingSteering partsSignalling/lighting devicesParking spaceReal-time computing
The invention discloses a method and a device for implementing assistant parking. The method comprises the following steps: (1) acquiring an image of a site where a vehicle is located in real time, and identifying the vehicle position, the type of a parking site and the parking site in the acquired image; (2) determining a display sequence of a plurality of guide frames guiding the vehicle to enter the parting site and a display position of each guide frame according to the type of the parking site and the current parking condition of each parking site; and (3) when one of the parking sites is appointed, displaying multiple guide frames in the image according to the display sequence of the guide frames and the display position of each guide frame of the appointed parking sites, wherein when one guide frame is displayed in the image each time, the next guide frame is displayed while judging that the position of the vehicle enters the guide frame until the position of the vehicle enters the last guide frame. By virtue of the method, a driver can easy know how to park the vehicle to the parking site, so that the operation difficulty during the parking of the vehicle to the parking site is effectively reduced.
Owner:上海为森车载传感技术有限公司
Random access method, wireless access network element and mobile communication system
ActiveCN102170705AImprove access capabilitiesRealize reasonable choiceWireless communicationAccess networkRandom access memory
The embodiment of the invention discloses a random access method, a wireless access network element and a mobile communication system. The random access method comprises the following steps of: receiving an access request from user equipment (UE); performing antenna compensation calculation on the received access request to obtain an antenna-compensated access request; primarily checking the antenna-compensated access request; and / or performing frequency offset compensation on the data part of the antenna-compensated access request to obtain frequency offset-compensated access request, and performing primary checking on the frequency offset-compensated access request; and if the antenna-compensated access request is primarily checked to be correct, performing the random access of the UE based on the antenna-compensated access request; or if the frequency offset-compensated access request is secondarily checked to be correct, performing the random access of the UE based on the frequency offset-compensated access request. The scheme provided by the embodiment of the invention is favorable for improving random access performance.
Owner:SHANGHAI HUAWEI TECH CO LTD
A Groundwater Pollution Detection and Evaluation System
InactiveCN105866364BReal-time detectionHigh precisionGeneral water supply conservationTesting waterEnvironmental resource managementWater quality
The invention discloses a groundwater pollution detection and evaluation system, which includes a sensor group, a positioning module, a camera module, a monitoring and evaluation center, a transfer node module, a physical model building module, a virtual actuator, a virtual sensor, a simulation analysis module, and a water quality status assessment module. module, expert evaluation module, artificial expert module, display screen and human-machine operation module. The invention transmits data through Beidou short message communication technology without setting up communication lines, is easy to use, and can conduct all-round real-time detection of groundwater, thereby obtaining multiple evaluation results. The detection results are highly accurate and can be passed The construction of the physical model predicts and simulates the subsequent situation of water quality. It also converts various water quality treatment plans into parameters and then acts on the physical model, realizing the reasonable selection of water quality treatment plans.
Owner:NORTHWEST UNIV
A method, device and equipment for determining the bandwidth of a pcie signal
ActiveCN113347067BRealize reasonable choicePrecise high-speed signal bandwidth selectionData switching networksComplex mathematical operationsSignal onSpectral density
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
ActiveCN109282831BRealize reasonable choiceAchieve precise controlMeasurement devicesAlgorithmComputational physics
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
ActiveCN108918842ASimple and efficient operationHuman factors have little influenceVolume measurement apparatus/methodsBiological testingProtein contentScreening instrument
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
Data transmission method and device, computer equipment and storage medium
ActiveCN111490864ARealize reasonable choiceImprove transmission performanceSignal allocationSignalling characterisationSoftware engineeringEngineering
The invention discloses a data transmission method and device, computer equipment and a storage medium. The method comprises the steps that a terminal selects a PUSCH meeting a preset condition from at least two PUSCHs serving as selection objects; and the terminal multiplexes the first UCI to the selected PUSCH for transmission. By applying the scheme provided by the invention, reasonable selection and the like of the PUSCH can be realized.
Owner:GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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