65results about How to "Reduce the number of deployments" patented technology

The invention is suitable for the technical field of communication, and provides an AOA base station positioning method and device based on Bluetooth, and the method comprises the steps: obtaining a phase value corresponding to an antenna at a home terminal; the number of the antennas being at least four; the phase value being determined by a received signal broadcasted by a to-be-detected object;and calculating the position information of the to-be-detected object based on the phase value corresponding to each antenna and a preset position calculation strategy. According to the method, the position information of the to-be-detected object can be determined through the phase value corresponding to each antenna and the preset position calculation strategy, single-base-station positioning is realized, data of multiple base stations do not need to be calculated, the positioning speed is improved, and the number of deployed base stations is reduced. Moreover, when the position informationis acquired, the direction angle which is an intermediate variable can be skipped, and the phase difference is directly converted into coordinates, so that the positioning precision is improved.

The invention discloses a parking space state identification method and device based on video streaming. The method comprises the steps that firstly, four corner point coordinates of a parking space are acquired, and through perspective transformation, a parking space image is converted into a standard rectangular image; the standard rectangular image is input to an identification model, and the duty probability of the parking space of the frame is output; the duty probability of the parking space of the frame is compared with a preset threshold value, and whether or not a vehicle exists underthe state of the parking space of the frame is judged; finally, in combination with the state of the parking space of the current frame and preset frames before the current frame, a final state of the parking space is judged. According to the scheme, a parking lot is subjected to parking space state identification based on a camera mode, and the defects can be greatly overcome that in a traditional mode, the cost is high, maintenance is troublesome, and the device is easily damaged. According to the technical scheme, the state of the parking space is comprehensively judged through multiple frames of pictures, a small number of mistaken results caused by interference factors such as pedestrian and vehicle movement are filtered out, the anti-interference capacity is high, and the identification accuracy is high.

The invention provides a network data packet classification method and system based on 7-layer of applications. The network data packet classification method based on 7-layer of applications includes the steps: according to the data frame type, performing classified judgment on the data packet, when the source MAC address for receiving the data or the target MAC address is matched with the preset MAC address in the strategy; obtaining the data message head by splitting and analysis the data packet, and according to the data message head, determining the type of sub data; and finally matching the application layer protocol characteristic codes in the effective load of data, and according to the application layer protocol characteristic codes, obtaining the application layer protocol type. Therefore, the network data packet classification method and system based on 7-layer of applications can accurately identify various network applications, can reduce the output flow, can improve the convergence ratio, and can greatly reduce the displayed quantity of data content analysis servers at the back end.

The invention relates to the technology of wireless network, in particular to a relay node deployment method in a time delay limited wireless sensor network. The method comprises two steps of coverageand communication; the main objective of the coverage step is to cover all the sensor nodes with relay nodes as few as possible under the condition of time delay constraint, and the main objective ofthe communication step is to construct network connectivity with the relay nodes as few as possible under the condition of time delay constraint, wherein the coverage comprises three steps of feasible deployment position grouping, grouping selection and feasible position selection; and the communication comprises three steps of feasibility inspection, connectivity construction and relay pruning.According to the method, the requirements of the time delay limited wireless sensor network for time delay and deployment cost are fully considered; a relay node deployment method based on set coverage in a time delay limited double-layer wireless sensor network is provided; and the network connectivity is constructed by deploying the relay nodes as few as possible on the premise that the networktime delay requirement is met.

The invention discloses an SDN (Software Defined Network) environment important node information acquisition method. The method is used for selecting important nodes in a network so as to carry out key monitoring and key deployment on network services. The method includes the following steps that: related information of a forwarding plane and a network service program are collected; and the important degrees of forwarding nodes are subjected to quantitative analysis, and then, focused information acquisition can be performed on the network services. According to the method, selected parameters include the following four parts: 1) communication traffic; 2) network topology; 3) forwarding node liveness; and 4) network service information, wherein the network service information is indexes related to the evaluation of the urgent degree of the deployment of the services by the forwarding nodes and can be selected from indexes provided by specific network services according to the specific network services. With the method of the invention adopted, the information acquisition work of the network services is optimized, and the number of network service information acquisition nodes can be decreased, and excellent service effects can be obtained.

In order to solve the problem that the construction site personnel cannot be positioned precisely, the invention provides a construction site personnel positioning system and a using method thereof. The construction site personnel positioning system is characterized in that: the construction site personnel positioning system comprises a plurality of master anchor nodes distributed in a construction site, a plurality of slave anchor nodes distributed on the periphery of each master anchor node, positioning tags, a data gateway and a server; each positioning tag comprises a master tag that communicates with the master anchor nodes, slave tag that communicates with the slave anchor nodes, and a battery supplying power to the master tag and the slave tag; the master anchor nodes and the slaveanchor nodes are connected with the data gateway separately; and the data gateway is connected with the server. The construction site personnel positioning system adopts a multi-level anchor point mechanism, gradually reduces the range of a positioning region, reduces the interference of obstacles on positioning during the positioning process, and realize precise positioning of the personnel at the construction site.

The invention discloses a k-fence construction and charger optimal deployment method for a wireless rechargeable sensor network. The method comprises the following specific steps: step 1, constructing a fence diagram according to monitoring area information; and step 2, solving a fence network structure by using a minimum cost and maximum flow algorithm; step 3, finding each sensor node forming the fence according to the solving information of the minimum cost maximum flow algorithm; step 4, dividing the whole monitoring area into grid points, and calculating the effectiveness of arranging the charger at each grid point; and step 5, selecting a charger position according to the charging utility of each grid point; judging whether all sensor nodes meet the charging requirement or not, and if yes, ending; otherwise, returning to the step 4 to recalculate the charging effectiveness of the remaining grids. Fence coverage and charger deployment are combined, and the number of deployed chargers is reduced on the premise of ensuring the fence coverage requirement.

The invention provides a network element agency managing method and system. The method comprises the steps that an RMI and/or EJB request network data message sent by an operation maintenance terminal (OMT) to an operation maintenance center (OMC) server is monitored, intercepted and captured; a source port of the request network data message is extracted and preprocessed; the request network data message is sent to a target OMC server; an OMC response message returned by the target OMC server is intercepted and captured; a target port of the response message is extracted, and inverse processing of preprocessing is carried out on the target port of the response message; the OMC response message is sent to the OMT according to the processed target port. According to the network element agency managing method and system, due to the fact that the network data message of an RMI and EJB protocol is monitored, intercepted, captured and forwarded, a one-to-many mode is achieved between the OMT and the OMC, all network elements managed by a login user can be checked by logging into one OMT, the efficiency of network element daily maintaining managing is effectively improved, and the maintaining managing cost is reduced.

The invention discloses a video monitoring method and apparatus based on virtual cameras, applied to a video monitoring system. The method comprises the following steps: receiving basic stream video data from the camera, and virtualizing a predetermined number of virtual cameras; receiving a code stream request from a video terminal, and allocating the virtual camera to the received code stream request to serve as a stream sending end of the video terminal; sending the basic stream video data to the stream sending end, packaging the basic stream video data of the stream sending end according to a code stream package mode corresponding to the code stream request, and sending the packaged basic stream video data to the corresponding video terminal. By adoption of the video monitoring method and apparatus disclosed by the invention, the shared use of the camera is achieved, thereby greatly reducing the deployment number of physical cameras and improving the monitoring utilization rate of the cameras, only a plurality of virtual cameras are configured to be compatible with different platforms, and the cameras only need to send encoded basic streams, so that the performance requirements for the cameras are greatly reduced, and the investment cost of the cameras is reduced.

The invention relates to an illumination probe generation method, an illumination probe generation device, a storage medium and computer equipment. The method comprises the following steps of: selecting the shadow points of a target object in a virtual scene; converting the selected shadow points into a voxelized shadow voxel object; reducing the number of vertexes in the shadow voxel object to obtain a reduced shadow voxel object; and generating illumination probes at the vertex positions of the vertex-reduced shadow voxel object. With the method provided by the technical schemes of the invention adopted, when the illumination probes are distributed, the occupation of a large amount of memory and the consumption of a large amount of distribution time can be effectively avoided.

The invention relates to a tebuconazole emulsion in water. The tebuconazole emulsion in water comprises, by mass, 10-30% of a tebuconazole original drug, 10-25% of dimethyl sulfoxide, 5-15% of dimethyl formamide, 5-15% of isooctyl acetate, 5-10% of an emulsifier and 45-65% of water. In preparation, dimethyl sulfoxide, dimethyl formamide and isooctyl acetate are added into a stirring device according to the above mass percent, then the tebuconazole original drug is added into and dissolved in the mixture with stirring, then the emulsifier is added into the mixed solution, the mixed solution is stirred to obtain a uniform solution, then water is slowly added into the solution and the solution is mixed so that the uniform tebuconazole emulsion in water is obtained. A detection result shows that the tebuconazole emulsion in water has a lasting foam volume (standing for 1min)/mL index less than or equal to 8 and has invariable other main technical indexes. In a real process, the used agent dosage (concentration) can be easily and effectively controlled under the condition of the same spray volume, normal agent action is promoted, a foam generation is reduced, a change range is reduced, blending frequency and time are reduced and work efficiency is improved.

The invention discloses an SDN matrix network probe deployment method and device based on a greedy algorithm. The method comprises the following steps: converting an SDN network matrix into an undirected graph, judging whether points and edges in the graph can be deleted or not, and removing all deletable points through a recursive algorithm to obtain a final probe deployment node distribution map, thereby determining the position of a probe to be deployed. According to the method, degree sorting is no longer taken as a selection standard, but the method starts from the points which cannot becut and obtains the minimum set of the acquisition points, thereby improving the existing minimum vertex coverage greedy algorithm, and effectively reducing the number of deployed probes.

The invention provides an electromagnetic wave lens. An outline shape of a cross section of a wave beam passing through the lens is similar to a rectangle or a square so that blind-area-free signal coverage can be realized by using the least lens antennas. A kernel body and a plurality of dielectric layers wrapping the kernel body are included. A dielectric constant of the kernel body is 1.7-2.3,the dielectric constant of the dielectric layer on the outermost layer is 1-1.2, and the dielectric constants of all the layers are smaller and smaller from the kernel body to the dielectric layer onthe outermost layer. Especially, the kernel body is a cuboid, and an appearance of each dielectric layer is also a cuboid. In fact, debugging personnel can complete debugging work of ground coverage more simply and accurately under a condition of avoiding large-area overlapping of different wave beams. The invention also provides an antenna adopting the electromagnetic wave lens and an electromagnetic wave lens antenna array.

The invention discloses a data compression storage method. The data compression storage method comprises the step of data algorithm generation and storage, the step of data storage and defining and the step of data storage. Data are matched according to algorithms in data marker definitions, after matching is successfully carried out, the current values can be compressed, otherwise, original storage of the values is carried out, same nodes just need storing once, accordingly, space where a plurality of repeated data nodes need storing is reserved, and therefore the problem that huge storage space is occupied is solved, the number of deployed hardware is reduced, the deploying environment is miniaturized, and deploying cost is saved. The data compression storage method can achieve real-time, high-frequency and large-data-volume data compression storage, and the purpose of greatly reducing storage space is achieved.

The invention relates to a visual large-screen intelligent editing system, which comprises a template component selection unit which is provided with a plurality of pre-edited template components; thelarge-screen real-time editing and previewing unit which is configured with a visual editing window which can be synchronized with a preset large-screen interface, and the selected component can be edited for the second time in the editing window; and the component attribute configuration unit which is configured to perform specific attribute configuration on the component selected in the editingwindow. According to the invention, the visual large screen can be adjusted on site without the need for research and development personnel, and the visualization can be quickly configured without the need for research and development personnel, so that the large screen generation process is greatly simplified, the deployment frequency of operation and maintenance personnel is reduced, the repeated labor is reduced, and the working efficiency is improved.

The invention discloses a software-defined optical network controller deployment method based on multipath survivability protection, belongs to the technical field of networks, and is applied to deployment of a two-layer SDN (Software Defined Network) controller. On the premise that the survivability requirement of a user for a control plane is guaranteed, the situation of multi-controller multi-path collaborative management and control of exchange nodes is provided, the number of controllers is further reduced, and the control cost is further reduced. According to the method, a controller deployment scheme in which a switch and a controller have a unique link is firstly solved, the scheme contains redundant controllers, and the number of the controllers needs to be further reduced. According to the method, a posterior idea is adopted, that is, whether the fault probability of each switch is lower than the fault probability required by a user is verified according to a deployment result. The number of the controllers is gradually reduced, and the survival probability of the switch is ensured all the time until the deployment number of the controllers reaches the minimum. And finally, selecting the controller with the lowest communication time delay as a management and control center to complete the deployment work of the whole control plane.

The invention relates to an accurate positioning device and method for assisting automatic driving. The device comprises road sign millimeter wave emitters, millimeter wave array receiving antennas, an automatic driving control system and a container truck. The plurality of road sign millimeter wave emitters are deployed on a guide path center line of a specified road surface corresponding to thecoordinate codes of a precise map; each of the two ends of the container truck is provided with a column of millimeter wave array receiving antennas, each millimeter wave array receiving antenna is composed of a plurality of antenna units which are arranged in two rows in a staggered mode, the automatic driving control system is installed on the container truck, and the automatic driving control system comprises a millimeter wave signal processor and a vehicle control unit. The cost of AGV transportation equipment is reduced, the efficiency is improved, and automatic transportation of variousport containers is met.

The invention discloses a columnar storage technology-based real-time data compression algorithm. According to the algorithm, trial calculation and assessment of a variable-step calculation formula are completed for a sequence in a specific column package, search and parameter calculation of a unit calculation formula are covered, and real-time data column packages in compression division can be compressed, so as to solve the problem of huge storage space occupancy, decrease the hardware deployment quantity, downsize the deployment environment and save the deployment cost. The algorithm disclosed by the invention is capable of realizing real-time high-frequency and large-data volume data compression and storage, and greatly decreasing the storage space occupancy problem.

The invention discloses a directed wireless charger deployment method used in a multi-hop rechargeable sensor network, and belongs to the field of Internet-of-Things wireless rechargeable sensor networks, and the method comprises the steps: firstly dividing nodes in a whole area into a plurality of subareas through a circular coverage method according to the charging range of a charger and the actual distribution of the nodes; secondly, designing a multi-hop charging coverage method of the nodes to determine a multi-hop charging path of the nodes; and finally, designing a method for searchingfor the optimal deployment position and angle of the charger according to the node distribution condition in the subarea. According to the method, the problem of directed charger deployment in the multi-hop wireless rechargeable sensor network is solved, and the method is an economical and effective energy supplementing method for prolonging the life cycle of the wireless rechargeable sensor network.

The invention discloses a software optical network controller deployment method and a storage medium, belongs to the technical field of networks, and is applied to two-layer SDN controller deployment.On the premise that the survivability requirement of a user for a control plane in a large-scale network (namely a network with more nodes and higher total degree) is met, the control redundancy is reduced as much as possible, and the deployment cost of a controller is reduced. According to the method, the maximum fault probability P provided by the user is obtained, then the controller combination meeting the condition is obtained through calculation, the dependence of each SDN switch node on the whole network is calculated accordingly, and finally the optimal controller deployment scheme isobtained.

The disclosed system synthesizing dialog stations in tandem exchange comprises: a tandem exchange switch device relaying an end-office switch device by 7-type signaling, a dialog station client, and a dialog station system, wherein the end-office switch device takes semi-fix connection to user circuit toward client and relay circuit toward the tandem exchange; the dialog client interacts with dialog station system by circuit or IP channel; when using 2B+D connection type, one controls B channel to transmit interactive and charge message between dialog station and iMS, and one loads B channel for dialog speech. This invention saves cost, and realizes centralized management for local dialog stations.

The invention discloses a DCS control system which comprises a control station connected with a configuration monitoring software device and at least two DP main stations connected with the control station, the control station is a control station of a multi-task operating system and used for configuring a plurality of IEC tasks, and the DP main stations and the IEC tasks are in mapping association. The control station adopts a multi-task operation system, a plurality of IEC tasks can be configured at the same time, the DP main station and the IEC tasks are in mapping association, one IEC taskcan be associated with a plurality of DP main stations, but the same DP main station can only be associated with one IEC task, and as the support of the plurality of DP main stations can be realized,the faster operation speed can be realized; the whole DCS control system is suitable for being deployed in a large-scale complex scene, the deployment number of control stations is reduced, the utilization efficiency of a DP main station is improved, and the DCS control system is low in deployment cost, high in integration degree, good in reliability and flexible in configuration.