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

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.