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79results about How to "Create flexible" patented technology

Network virtualization method based on software defined network (SDN)

The invention discloses a network virtualization method based on a software defined network (SDN). The network virtualization method comprises the steps of obtaining SDN topology information by a controller through detection in network initialization; creating a virtual network sheet, calling a virtual network generation module by the created virtual network sheet, adding host computers into the virtual network after network creation is finished, adding the host computers into the virtual network sheet, and communication between a certain host computer and another host computer is required, if a switch has a matched flow item, directly forwarding a data package, and if the switch has no matched flow item, transmitting the data package to the controller, calling an information interception module by the controller for intercepting the data package, calling an information analyzing module by the information interception module, waiting for a result which is returned from the information analyzing module, and determining whether to discard the data package. The network virtualization method can be used for flexibly creating a virtual network and is totally driven according to a user requirement and has relatively high expandability. Furthermore the invention provides a relatively good solution for improving network throughput and preventing competition of busy links.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA

Unmanned aerial vehicle track and intelligent reflecting surface phase shift joint optimization method and system

The invention discloses an unmanned aerial vehicle track and intelligent reflecting surface phase shift joint optimization method and system. A wireless communication system model assisted by an unmanned aerial vehicle and an intelligent reflecting surface is established, and the energy efficiency of the system is calculated; the position of the unmanned aerial vehicle is determined by using a priority experience playback TD3 method, the unmanned aerial vehicle and the intelligent reflecting surface assist a user communicating with the base station, an activated reflecting element of the intelligent reflecting surface in a first time slot in an information transmission stage and a phase shift of the activated reflecting element, then by using the priority experience playback TD3 method based on the LSTM, the activated reflecting elements of the intelligent reflecting surface in all time slots of the whole information transmission stage and phase shifts of the activated reflecting elements are obtained, the track of the unmanned aerial vehicle and the phase shift of the intelligent reflecting surface are adaptively adjusted according to the communication environment, and joint optimization of the track of the unmanned aerial vehicle and the phase shift of the intelligent reflecting surface is completed. The problem that an off-line optimization method for the track of the unmanned aerial vehicle and the displacement of the intelligent reflecting surface is difficult to solve under the condition that the communication environment changes continuously is solved.
Owner:XI AN JIAOTONG UNIV

Optical-codeword-label-based optical packet multicast transmission and receiving methods and devices

ActiveCN102231864ANo need to change the receiving structureGood multicast sending abilityMultiplex system selection arrangementsElectromagnetic transmissionEdge nodeOptical packet
The invention discloses an optical-codeword-label-based optical packet multicast transmission method, an optical-codeword-label-based optical packet multicast transmission device, an optical-codeword-label-based optical packet multicast receiving method and an optical-codeword-label-based optical packet multicast receiving device. An optical codeword label in the methods and the devices consists of a network optical label and a node optical label, and the optical codeword labels of all destination nodes in a multicast group form an optical codeword label group. The optical codeword label group is generated for a data packet at an edge node, and is added in front of a carrier signal to form an optical packet signal with multicast capability, and the optical packet signal is simultaneously transmitted to all the destination nodes in the multicast group. The multicast group can be flexibly created, changed or canceled by regulating the composition of the optical codeword label group. By the methods and the devices, the utilization efficiency of optical codewords is improved, the total number of the optical codewords required by a system is decreased, and simultaneously, label switching is not required in node routes of optical packets in each sub-network, and only a packet forwarding function is required to be finished.
Owner:SOUTHEAST UNIV

Industrial equipment abnormality detection method based on fuzzy set

The invention relates to the technical field of industrial equipment abnormality detection, and provides an industrial equipment abnormality detection method based on a fuzzy set. The method comprises: firstly, using an abnormal knowledge tree for constructing an abnormal detection model of industrial equipment; secondly, configuring an attribute set, an attribute data flow, a time window size, anattribute membership function and an aggregation function according to user requirements, and obtaining an abnormity degree of the leaf node; then, according to the Pearson correlation coefficient between the attributes, clustering the attributes, and calculating the weights of the leaf nodes; secondly, aggregating leaf nodes involved in the class cluster into non-leaf nodes, and aggregating thenon-leaf nodes into root nodes; after a user selects model parameters according to requirements, establishing a topological structure of flow processing of the abnormal detection model based on a Storm real-time computing system, and visualizing abnormal degree results of the industrial equipment in different time windows. According to the mehtod, the abnormity of the industrial equipment can be detected in real time, and the abnormity detection of data with different granularities can be realized.
Owner:NORTHEASTERN UNIV

Surface acoustic wave module one-step molded packaging structure and packaging process thereof

The invention discloses a surface acoustic wave module one-time formed packaging structure and a packaging process thereof. According to the packaging structure, a surface acoustic wave bare chip, anactive device and a passive device are arranged on a laminated board, and a via hole is formed in the laminated board to be connected with a ground PAD; a thin film and a metal coating are sequentially arranged on the mounting surface of each device, wherein the metal coating is connected with the ground pad on the front face and the ground PAD on the back face through via holes, and an EMC layeris packaged on the periphery of the metal coating. The packaging process comprises the following steps: mounting each device on the laminated board; covering the mounting surface of each device with the thin film for curing; then removing the thin film on the surface of the grounding PAD through laser equipment, and setting a metal plating layer to enable the metal plating layer to be conducted with the grounding PAD; and finally filling the EMC layer. According to the invention, the shielding area can be flexibly created, the packaging size is reduced, and the heat dissipation is better through the shielding layer; and compared with the traditional process, the process enables the metal shielding layer to be protected inside, so the reliability is better, the shielding effect is good, andthe overall performance is better.
Owner:天通瑞宏科技有限公司

Integrated safety management system for radioisotopes and radiation workers

The purpose of the present invention is to provide an integrated safety management system gathering locations and state data of radioisotopes and radiation workers into one integrated safety management system, and analyzing states of the radioisotopes and the radiation workers so as to enable measures to be taken and warning to be provided according to the analysis performed thereby, such that a radioisotope handling company can systematically perform, through the measures and the warning, safety management of the radioisotopes and the radiation workers to be managed, and the system comprises:an integrated management server collecting, through a wired and wireless communication network, data, which is periodically collected by a radiation source storage place entrance / exit management device, a mobile radiation projector tracking device, and a smart dosimeter according to a preset period value, and data, which is received from at least one of mobile radiation source tracking devices, thereby analyzing and managing the pieces of data; and a manager terminal for requesting, from the integrated management server, real-time information on a radiation source and workers, and performingcontrol by a manager through a system operation setting change of the radiation source tracking devices and the smart dosimeter and through a request for data including an image.
Owner:LENIVEN
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