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78results about How to "Reduce communication energy consumption" patented technology
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Federated learning method based on hierarchical tensor decomposition in edge calculation
ActiveCN110909865AReduce energy consumptionReduce communication energy consumptionResource allocationMachine learningUser privacyFederated learning
The invention relates to a federated learning method based on hierarchical tensor decomposition in edge calculation. The federated learning method comprises the steps: S1, designing an effective deepneural network sharing model at a cloud end; S2, compressing the designed sharing model according to a hierarchical tensor decomposition method to obtain a hierarchical sharing model; S3, designing aforward propagation algorithm and a reverse propagation algorithm corresponding to the hierarchical sharing model; S4, initializing the hierarchical sharing model at the cloud and issuing the hierarchical sharing model to edge nodes participating in training; S5, learning the hierarchical sharing model obtained in the step S2 by the edge nodes participating in training according to the algorithm designed in the step S3 by using the local data set; and S6, aggregating the edge models at the cloud in an average aggregation mode. According to the federated learning method, distributed training ofthe shared model is realized on the premise of protecting user privacy, and the demand for network bandwidth during distributed training is reduced, and the communication energy consumption of edge nodes is reduced.
Owner:FUZHOU UNIV
Energy-saving method for distributed self-adaption industry wireless network
InactiveCN101325604AShorten the lengthReduce energy consumptionTransmissionComputer networkSelf adaptive
The invention relates to a distributed self-adapting industrial wireless network energy saving method for reducing the energy consumption of nodes in industrial wireless monitoring network, belonging to industrial wireless communication technology field. The energy saving project comprises: sorting all devices in the whole wireless network into node device (ND) for acquiring and sending data, energy manager for gathering and transmitting data and managing the energy consumption of the node devices, and gateway (GW) for communicating between the wireless network users and transferring monitoring data and energy managing data. By using energy manager to control the energy consumption of each node, the method provided in the invention enable the industrial wireless network to prolong network life cycle, adjust the dormancy time of the node self-adaptingly and enlarge the information amount of wireless messages, consequently, reduces the energy consumption of nodes in industrial wireless monitoring network and furthest reduces communication energy consumption.
Owner:CHONGQING UNIV OF POSTS & TELECOMM
Task allocation algorithm in wireless sensor network based on node property
ActiveCN102448123AReduce communication energy consumptionAssignment is easy and convenientPower managementEnergy efficient ICTTime responseRelational graph
The invention discloses a task allocation algorithm in a wireless sensor network based on node property. The task allocation algorithm is a method for constructing task processing property parameters of a node according to energy consumption, speed, success rate and other factors in task processing of the node. The method comprises the following steps: constructing a single-hop wireless sensor node model; dividing a task into a plurality of task groups based on a task relational graph; calculating the property parameters of each node; and selecting an allocating scheme with the best sum of the property parameters. The task allocation algorithm has the beneficial effects that a task grouping method is utilized to realize parallel processing and real-time response of the task and reduce communication energy consumption at the same time; the calculation energy consumption and the communication energy consumption in task processing of the node are formulized, all factors influencing the task processing of the node are comprehensively considered, and an optimal method is utilized to construct a property parameter; and node properties are quantified, thereby simplifying a task allocating strategy, simply and conveniently finishing the task allocation and realizing the high efficiency of system energy and the real-time response of the task.
Owner:苏州光熙智能科技有限公司
Hybrid MAC protocol method for cluster-structure multi-carrier acoustic sensor network
ActiveCN104796959AReduce energy consumptionGuaranteed service qualityTransmissionHigh level techniquesQuality of serviceTransfer mode
The invention discloses a hybrid MAC protocol method for a cluster-structure multi-carrier acoustic sensor network. The hybrid MAC protocol method comprises the following steps: fusing a scheduling type MAC protocol with a competitive type MAC protocol into a hybrid acoustic communication network MAC protocol, realizing MAC protocol dynamic switching for all nodes in the network by virtue of a global synchronization time, and classifying data with different attributes through a cross layer design thought and then transmitting. Two transmission modes of free burst IBT and active polling IPT are adopted, data messages transmitted in the two different transmission modes are periodic messages and burst messages respectively, IBT time slots and IPT time slots are alternately carried out, and the length of the free burst IBT time slots is dynamically adjustable, so that the needs of transmission for the various messages in the sensor network can be met, the communication energy consumption of the sensor network can be reduced simultaneously when the service quality of the network can be ensured.
Owner:SOUTHEAST UNIV
High and low sensor alternate tracking energy-saving street lamp system and control method thereof
ActiveCN104202879AImprove detection accuracyExtended service lifeElectric light circuit arrangementEnergy saving control techniquesWireless sensor networkingEffect light
The invention discloses a high and low sensor alternate tracking energy-saving street lamp system and a control method thereof. The high and low sensor alternate tracking energy-saving street lamp system comprises a plurality of street lamps, a street lamp control module, a wireless communication module, a wireless sensor network, a sensor control module and a central control unit; the plurality of street lamps are arranged on the bilateral sides of the road surface; the wireless sensor network comprises high sensors and low sensors which are arranged below the high sensors. According to the high and low sensor alternate tracking energy-saving street lamp system and the control method thereof, the number of front or rear lighted lamps and the lighting duration are calculated according to the movement speed and the movement direction of a moving target, a lighting data instruction is transferred between the adjacent street lamps, and accordingly the communication distance is reduced, the energy consumption is saved, and the service life of the street lamp system is fully extended due to the fact that the working mode that the high sensors and the low sensors are separated from each other is adopted to form the advantage complementation.
Owner:HOHAI UNIV CHANGZHOU
Gradient based energy-efficient uneven clustering data forwarding method
ActiveCN104080144ABalanced energy consumptionEven consumptionPower managementHigh level techniquesClustered dataWireless sensor networking
The invention discloses a gradient based energy-efficient uneven clustering data forwarding strategy designing method in the wireless sensor network. In a conventional data forwarding strategy based on an even clustering technology, the problem of unbalanced energy consumption is caused by multi-hop routing realized by a backbone network constituted by cluster-head nodes, that is, the network is partitioned and the network survival time is shortened due to the fact that the cluster-head node close to a base station forwards mass data, is excessively loaded, untimely consumes the energy and loses efficacy. Therefore, a clustering mechanism is operated on a gradient model, and data forwarding is completed through uneven clustering and dynamic selection based on node energy, the number of non-cluster-head nodes and low-gradient key nodes in the opposite positions of the nodes so as to improve the energy efficiency of inter-cluster communication. According to the designing method provided by the invention, the energy overhead of the network is reduced while the energy consumption among the nodes can be balanced, so that the utilization rate of network resources is improved, and the network survival time is maximized.
Owner:CHONGQING UNIV OF POSTS & TELECOMM
Node safety authentication method in smart grid
InactiveCN103647788AVerify accuracyAchieve non-repudiationUser identity/authority verificationNetwork deploymentExtensibility
The invention provides a node safety authentication method in a smart grid. The node safety authentication method in the smart grid comprises the steps of: deploying each node in a smart grid node authentication system and presetting symmetrical private keys according to a hierarchical structure; initializing the smart grid node authentication system; authenticating nodes newly added in a sampling node layer; authenticating each server; performing information interaction on authenticated nodes and a power server and finishing node safety authentication. The node safety authentication method in the smart grid improves simplicity and extendibility of system network deployment as the smart grid node authentication system is structurally layered, reduces identity authentication frequentness of the nodes or the power server to a certain extent and increases efficiency of the whole system as a verification server is added in the system. Besides being able to verify identity of the nodes and the power server, the node safety authentication method in the smart grid also can guarantee the authentication process to be safe and efficient, and can enhance operation fluency of the whole system.
Owner:STATE GRID CHONGQING ELECTRIC POWER
WSNs clustering routing method under long and narrow topology
ActiveCN108777877AImproved Local Election MethodReduce control overheadNetwork topologiesHigh level techniquesRest energyShortest distance
The invention discloses a WSNs clustering routing method under long and narrow topology. The method comprises the following steps that at a cluster head campaigning stage, the cluster head campaigningtime is set for each node according to the relative rest energy and the distance between the gathering nodes; when the time is shorter, the campaigning succeeding possibility is higher; at the cluster forming stage, the nodes select to add the cluster with the shortest distance and the greater communication radius according to the stored cluster head information; at a multi-hop path building stage, on the basis of the relative rest energy and energy expenditure index, the cluster head node builds the optimum multi-hop path based on the minimum spanning tree. The WSNs clustering routing methodunder the long and narrow topology can realize more effective data transmission at each routing stage; the network transmission efficiency and the node load balance can be improved, so that the energy consumption of each node can be balanced; the network life period can be prolonged.
Owner:SUZHOU UNIV OF SCI & TECH
Low-energy communication method and low-energy communication device for wireless sensing and control
InactiveCN104219743AReduce communication energy consumptionPower managementHigh level techniquesCommunications systemNetwork packet
The invention discloses a low-energy communication method and a low-energy communication device for wireless sensing and control. The low-energy communication device comprises a sending end and a receiving end, the sending end sends data packets to the receiving end, each data packet is sent by a sending rate as high as possible, and a circuit of the sending end gets in a dormant state once the data packets are sent completely. The low-energy communication method and the low-energy communication device for wireless sensing and control aim to reduce communication energy consumption in wireless sensing and control, reduction of the communication energy is not realized on the basis of losing timeliness and accuracy of a communication system, and on the contrary, reduction of the communication energy is beneficial to timeliness and accuracy of the communication system.
Owner:王大庆
Method of wireless sensor network clustering by using Hopfield nerve network
InactiveCN103167578AExtend the life cycleReduce communication energy consumptionNetwork topologiesHigh level techniquesHopfield networkNerve network
Disclosed is a method of wireless sensor network clustering by using Hopfield nerve network. The method belongs to the technical field of wireless sensor network, improves deficiencies of LEACH (Low Energy Adaptive Clustering Hierarchy) protocol to balance energy consumption of each node and distribution of each cluster-head, and models the clustering protocol into a combination optimization problem. The method improves traditional Hopfield nerve network local extreme value problem and fixed step length problem, and provides a dynamic step length chaotic Hopfield nerve network under the name of DSC-HNN. DSC-HNN achieves best cluster-head selection. The method can effectively achieve the principle of protocol, delay the death time of nodes to maximize the life cycle of the wireless sensor network to prolong the life cycle of network.
Owner:SHANDONG UNIV
Lightweight encryption method and system for sensor gateway nodes of body area network
InactiveCN102932154AReduce communication energy consumptionShorten the lengthEnergy efficient ICTUser identity/authority verificationBody area networkSensor node
The invention discloses a lightweight encryption method and system for sensor gateway nodes of a body area network. The method comprises the following steps of: acquiring perception data of a plurality of sensor nodes; calculating deviation values of all the perception data; selecting a secret key to encrypt the deviation values, obtaining encrypted encryption values, and using symbol values and the encryption values corresponding to all the sensor nodes as uploading values of the sensor nodes; carrying out replacement on the uploading values of all the sensor nodes arranged according to the node sequence by utilizing the selected replacement sequence, and obtaining replaced uploading values of all the sensor nodes; and uploading the replaced uploading values of all the sensor nodes, the selected secret key sequence and the selected replacement sequence number to a cloud-computing storage server end. The method and system disclosed by the invention have the advantages that the adopted encryption algorithm is fast in operation speed and less in power consumption, and after the encrypted data are replaced, the security is improved.
Owner:CHINA UNIV OF GEOSCIENCES (WUHAN)
Schedule optimization method for communication energy consumption in on-chip network
InactiveCN103631659AEffective distributionReduce communication energy consumptionProgram initiation/switchingEnergy efficient computingComputer networkEngineering
The invention relates to a schedule optimization method for communication energy consumption in an on-chip network. According to the technical scheme, the method comprises the following steps: with the combination of characteristics of communication in the on-chip network, calculating communication density among different calculation tasks of the on-chip network, and establishing a calculation task diagram with communication traffic; subsequently dividing a calculation task set according to the communication traffic and the mutual relationship among the calculation tasks; furthermore dividing the on-chip network according to the division of the task set; subsequently scheduling the calculation task set into an area; finally performing calculation task scheduling within the area so as to reduce communication energy consumption and achieve the optimization target. By adopting the method, schedule optimization on communication energy consumption in the on-chip network is achieved, high-efficiency distribution on the calculation tasks in the on-chip network is promoted, and the communication energy consumption of the on-chip network is reduced.
Owner:WUHAN UNIV OF SCI & TECH
Compressed data collection method based on virtual MIMO
ActiveCN105338602ARealize the collectionExtend network life cyclePower managementNetwork topologiesEnergy consumptionCompression ratio
The invention discloses a compressed data collection method based on virtual MIMO. The compressed data collection method based on virtual MIMO integrates compressed sensing with the MIMO transmission technology, and can perform joint optimization of clustering number of network, the sparse rate and the compression ratio of a compression measurement matrix, the node number taking part in cooperative transmission, and the size of the constellation graph modulated during the remote transmission process, so as to realize collection of compressed data with low energy consumption. The compressed data collection method based on virtual MIMO can reduce the transmission energy consumption and the packet loss ratio during the data collection process so as to improve the data collection efficiency for a wireless sensor network and prolong the life cycle of the network.
Owner:ANHUI UNIVERSITY
Pyramid device laser reflection based underwater robot three-dimensional positioning and communication device and method
ActiveCN108680923AReduce communication energy consumptionImprove battery lifeElectromagnetic transmittersElectromagnetic wave reradiationOcean bottomSubmarine
The invention discloses a pyramid device laser reflection based underwater robot three-dimensional positioning and communication device and method, and belongs to the field of positioning and communication of underwater robots. The device includes a laser transmitting end base station located on the seabed and a laser reflection end installed on the underwater robot. The laser transmitting end base station includes a first sealed cavity with a window mirror and a laser generator, a vibrating mirror system, a charge coupled camera and a transmitter processor which are arranged in the first sealed cavity. The laser reflection end includes a photosensitive receiver, a communication pyramid device and a reflection end processor. Polymer dispersed liquid crystals are fixed to outer circumference of the communication pyramid device. A positioning pyramid device array used for reflecting lasers to the charge coupled camera is arranged outside a second sealed cavity. Therefore, the two-way communication between the underwater robot and the submarine base station is realized. The device has advantages of simple structure, low power consumption, small size, high reliability and low cost.
Owner:ZHEJIANG UNIV
Privacy protection oriented continuous data gathering method in sensor network
ActiveCN106714088AGuaranteed accuracyReduce data trafficPower managementParticular environment based servicesTime correlationPrivacy protection
The invention discloses a privacy protection oriented continuous data gathering method in a sensor network. An existing privacy protection oriented data gathering algorithm mainly is focused on snapshot gathering, while the traffic and energy consumption of the snapshot gathering algorithm are unsuitable for being directly applied to continuous data gathering. According to the method, through utilization of time correlation of sensing data, whether nodes transmit current sensing data or not is determined by setting a threshold value, thereby effectively reducing the data traffic. According to the method, for the problem that excessive encryption / decryption calculation results in the fact that the calculation energy consumption of the nodes is relatively high, the privacy of the data is ensured by adding random numbers to the transmitted sensing data, the sensing data is prevented from being encrypted / decrypted among the nodes in the data transmission process, the calculation energy consumption of the nodes is saved, and the network service life is prolonged well. According to the method, under the condition that the privacy of the sensing data is ensured, the traffic and calculation energy consumption are effectively reduced, and the good network expansibility is achieved.
Owner:ANHUI NORMAL UNIV
Regional optimal solution algorithm for underwater moving target precise positioning
ActiveCN105974419AExtend working lifeReduce communication energy consumptionAcoustic wave reradiationAlgorithmSensor node
The invention relates to a regional optimal solution algorithm for underwater moving target precise positioning, which comprises the steps that underwater sensor nodes are deployed, and location information of the nodes is acquired; an activation threshold of the nodes is set, and the nodes are enabled to initially stay at a dormant state; each dormant node periodically judges whether to turn into an activated state or not; the nodes, which stay at the activated state, send marked acoustic waves so as to carry out detection on a target; the node, whose residual energy is the highest, in the activated nodes is searched so as to act as an underwater data processing center, and the other three groups of target information are received to form a positioning equation set so as to solve the target location; a regional optimal solution algorithm is defined to solve a circumstance of intersection regions occurred in a large number of positioning equation sets appeared in reality, and an acquired optimal solution is enabled to act as the target position acquired by the positioning equation set at the moment; and the activated node returns back to the dormant state if not satisfying node activation conditions in five continuous periods. The regional optimal solution algorithm provided by the invention has the advantages of ability of improving the data utilization rate of a sensor network, high positioning precision, low energy consumption and the like.
Owner:YANSHAN UNIV
Method and system for reducing energy consumption of positioning communication through bluetooth
InactiveCN109525938AReduce communication energy consumptionSolve the problem of high energy consumptionPower managementLocation information based serviceComputer terminalBluetooth
The invention discloses a method and system for reducing energy consumption of positioning communication through bluetooth, relates to the technical field of positioning communication, and is used forsolving the problem that the energy consumption is high during positioning of a conventional terminal and passing with a service platform. The method includes steps: a bluetooth terminal is a bluetooth device arranged on a wearable device, and a bluetooth base station is arranged at a fixed position and communicates with the bluetooth terminal; the bluetooth terminal receives first information transmitted by the bluetooth base station, matches the first information with a stored information list, and determines a current position of the bluetooth terminal according to the first information when the matching is successful; and the bluetooth terminal transmits ID information so that the bluetooth base station transmits the received ID information to the service platform.
Owner:广州刻路科技有限公司
Wireless sensor network node positioning method based on compressed sensing theory
InactiveCN103200669AStrong energy efficiencyStrong reliabilityWireless communicationCorrelation coefficientWeight coefficient
The invention provides a wireless sensor network node positioning method based on a compressed sensing theory. Firstly, special information sent by beacon nodes is used for obtaining communication information of all nodes to the beacon nodes; and then a sampling matrix is obtained through the communication information obtained by the utilization of the beacon nodes, compressed communication information is obtained through target nodes, and correlation coefficients of the target nodes and all beacon nodes are obtained through a compressed sensing algorithm. Lastly, a weight coefficient of each beacon node to the target nodes is obtained by using the correlation coefficients, and an estimate position of each target node is obtained by the utilization of a centroiding algorithm. According to the wireless sensor network node positioning method based on the compressed sensing theory, the compressed sensing theory is introduced, and the correlation of the target nodes and the beacon nodes on geographic positions is fully dug. Due to the fact that the wireless sensor network node positioning method based on the compressed sensing theory fulfills four conditions, the wireless sensor network node positioning method based on the compressed sensing theory is reliable, effective, general in application, and suitable for node self-positioning of large scale networks.
Owner:HARBIN ENG UNIV
Satellite navigation positioning auxiliary ephemeris data compression and transmission method
ActiveCN111314392AReduce transfer volumeReduce transfer timeCode conversionSatellite radio beaconingData compressionData stream
The invention provides a satellite navigation positioning auxiliary ephemeris data compression and transmission method, which comprises the following steps that: equipment judges whether locally stored ephemeris data is expired or not during positioning, and requests current ephemeris data from a server if the locally stored ephemeris data is expired, and a request message comprises timestamp information of a locally stored ephemeris; after receiving the equipment request, the server searches current ephemeris data, and finds out expired ephemeris data corresponding to the timestamp accordingto the uploaded timestamp information; subtracting all parameters of the current ephemeris from all parameters of the expired ephemeris to obtain the variable quantity of each parameter; 4 bytes are used for representing the change states of satellite numbers and 26 parameters, and 4 bytes and each parameter variable quantity which is not zero are subjected to numerical value compression and packaging to form a data stream. According to the invention, the total transmission data can be compressed to about 70% of the original transmission data only by transmitting the compressed variable quantity and adding a small amount of data to the equipment, so that the data transmission quantity and the transmission time can be effectively reduced in narrowband communication, and the communication energy consumption of the equipment is reduced.
Owner:NURLINK TECH NANJING LTD
Multi-agent grouping consistency control method with unknown model
ActiveCN112363392ASatisfy real-timeReduce communication energy consumptionTotal factory controlAdaptive controlReference modelingRadial basis function neural
The invention discloses a multi-agent grouping consistency control method with an unknown model, and the method comprises the following steps: employing an adaptive algorithm based on a radial basis function neural network to carry out online recognition of an unknown item, and introducing an event-triggered communication strategy on the basis of the identification; and designing a distributed controller according to information of agent nodes, reference model information and information of neighbor agent nodes of the agent nodes, so that grouping consistency of multiple agents is achieved. According to the invention, online identification, a distributed event trigger communication strategy and grouping consistency control of a multi-agent system with an unknown type of model are realized,so that the problems of unknown multi-agent model, high continuous communication energy consumption and short running time are solved.
Owner:XIANGTAN UNIV
Wireless communication wake-up circuit
InactiveCN106789113AImprove reliabilityReduce communication energy consumptionBatteries circuit arrangementsData switching current supplyMicrocontrollerWireless transmission
The invention discloses a wireless communication wake-up circuit, which comprises a smart power source, a sensor module, a wireless transmission module, a singlechip, a wakeup unit and a timing chip. The smart power source respectively supplies power to the sensor module, the wireless transmission module, the singlechip, the wakeup unit and the timing chip. The sensor module is respectively connected to the wireless transmission module and the singlechip; the singlechip is respectively connected to the wakeup unit and the wireless transmission module; the wakeup unit is also connected to the timing chip. According to the wireless communication wake-up circuit, the wakeup unit is used to complete intermittent opening and operation of the whole system so as to overcome the problem that a complicated MAC protocol and an accurate and high-cost precision time protocol are adopted in a traditional wireless sensor network for data routing. The wireless communication wake-up circuit uses a dual power supply technology to improve the reliability of system communication, is easy to install, saves the cost, simplifies the communication protocol, reduces the nodal communication energy consumption, and extends the life cycle of the system.
Owner:QINGDAO CAMPUS AVIATION ENG COLLEGE OF THE PEOPLES LIBERATION ARMY NAVY
Task allocation algorithm in wireless sensor network based on node property
ActiveCN102448123BReduce communication energy consumptionAssignment is easy and convenientEnergy efficient ICTPower managementWireless mesh networkEnergy expenditure
Owner:苏州光熙智能科技有限公司
Method for selecting control nodes for complex task cooperative processing in wireless sensor network
ActiveCN102123488AEvenly distributedShort communication distancePower managementEnergy efficient ICTWireless sensor networkingEnergy information
The invention discloses a method for selecting control nodes for complex task cooperative processing in a wireless sensor network. The method comprises the following main steps: in a sensing node working area, position information of all nodes is known; sensing nodes sense a complex task and then describe and decompose the task into a plurality of subtasks; the sensing nodes broadcast messages under the condition that all nodes in the working area return respective ID (Identity) number, position information and energy information; and the sensing nodes carry out sequencing on the nodes according to an energy descending order, analyze an included angle between the two nodes and the sensing nodes, select the nodes according with conditions as control nodes and divide the working area into aplurality of working subareas according to the positions of the control nodes, wherein the quantity of the working subareas is equal to the quantity of the subtasks. The method disclosed by the invention is applied to wireless sensor network communication and can improve the complex task cooperative processing efficiency and save network energy.
Owner:常州安控电器成套设备有限公司
Safety communication method and device
ActiveCN106612503AImprove service qualityAvoid communication costsNetwork traffic/resource managementSecurity arrangementQuality of serviceMathematical model
The invention discloses a safety communication method and device. The method comprises the following steps: establishing a mathematical model for signal transmission under multi-cell multi-user scene in advance; computing the mathematical model in a signal to interference noise ratio threshold value range of the user communication safety by use of an alternating direction multiplier algorithm to obtain an optimal wave beam forming parameter and artificial noise parameter; determining a signal needing to be transmitted according to the wave beam forming parameter and artificial noise parameter, and sending the signal to the user, wherein an interference signal comprises intra-cell interference signal and inter-cell interference signal. On the basis of considering the inter-cell interference signal, the optimal wave beam forming parameter and artificial noise parameter are obtained by use of the alternating direction multiplier algorithm, and the additional communication cost can be avoided. Visibly, based on the artificial noise and optimized wave beam forming technology, the inter-cell interference is considered in safety communication under the multi-cell multi-user scene, the communication energy consumption is lowered, the user service quality is improved, and the communication safety risk is lowered.
Owner:STATE GRID ENERGY RES INST
Unmanned aerial vehicle control method and device and control equipment
ActiveCN111443731AReduce communication energy consumptionImprove detection efficiencyPosition/course control in three dimensionsData centerSimulation
The embodiment of the invention provides an unmanned aerial vehicle control method and device and control equipment. The method comprises the following steps: acquiring a to-be-detected area and a limited duration for completing a detection task, obtaining the minimum data volume corresponding to a subarea, averagely dividing the limited duration into N parts to obtain N time slots with a time slot of delta t, determining the delta t as the transmission duration corresponding to the subarea, controlling an unmanned aerial vehicle to acquire data with the minimum data volume corresponding to the subarea in the subarea, and controlling the unmanned aerial vehicle to transmit the data acquired in the subarea to a data center in real time by using the transmission duration corresponding to thesubarea. By adopting the scheme provided by the embodiment of the invention to control the unmanned aerial vehicle, communication energy consumption of the unmanned aerial vehicle can be reduced, andenergy consumption is saved for the unmanned aerial vehicle, so that the phenomenon that the unmanned aerial vehicle cannot complete a detection task within the endurance time is reduced, and detection efficiency of the unmanned aerial vehicle is improved.
Owner:BEIJING UNIV OF POSTS & TELECOMM
Improved multi-hop LEACH protocol based on chaotic genetic algorithm for wireless sensor networks (WSN)
InactiveCN111970742AImprove energy efficiencyReduce energy consumptionParticular environment based servicesNetwork topologiesPathPingGenetics algorithms
The invention relates to a wireless sensor network (WSN) routing protocol, in particular to an improved multi-hop LEACH protocol based on chaotic genetic algorithm for wireless sensor networks (ICGA-LEACH) . The ICGA-LEACH considers the node residual energy, the ratio of the node residual energy to the load and the node centrality to define a cluster head election threshold function, so that the probability that nodes which are located in the center of the cluster, low in load and high in energy become cluster heads is high, therefore uniformly distributed clusters are formed, and the communication energy consumption in the clusters is reduced. In order to reduce inter-cluster communication energy consumption, a chaotic genetic algorithm is adopted to search for a globally optimal multi-hop routing path. Moreover, the cluster maintenance is carried out by adopting a self-adaptive round period, so that a large number of control messages generated by frequent clustering are reduced, andthe network energy consumption is further reduced. Therefore, the ICGA-LEACH improves the network energy efficiency while balancing the network load, and effectively prolongs the network life cycle.
Owner:吉林建筑科技学院
Multi-specification integrated intelligent express cabinet
InactiveCN112133038AImprove accuracyReliable communicationApparatus for meter-controlled dispensingEngineeringOperating system
The invention relates to the technical field of express cabinets, and discloses a multi-specification integrated intelligent express cabinet. The multi-specification integrated intelligent express cabinet comprises a main cabinet body, a plurality of auxiliary cabinet bodies and a wireless network module, the main cabinet body and the auxiliary cabinet bodies are each provided with a plurality ofstorage cells used for storing goods, opening and closing doors are installed at cell openings of the storage cells, locks are further arranged at the cell openings and used for locking the opening and closing doors, the main cabinet body comprises a main control module and a display module, the main control module is connected with the locks on the main cabinet body, a client is installed on themain control module, the display module is connected with the main control module and used for displaying a client interface, the client interface is used for displaying information of the main cabinet body and the auxiliary cabinet bodies and obtaining an instruction of storing or taking the goods, and the information comprises main cabinet body information, auxiliary cabinet body information, goods information and matching information of the goods and the storage cells. The multi-specification integrated intelligent express cabinet is simple in structure, integrated installation and fixationare achieved, installation and use of the express cabinet are facilitated, and use is more convenient.
Owner:HEFEI UNIV
A fault-tolerant method for message transmission of a network node and the network node
ActiveCN104581772AImprove communication efficiencyReduce communication energy consumptionPower managementError preventionData connectionEnergy consumption
Disclosed are a fault tolerant method for packet transmission of a network node and a network node, which relate to the communications technologies. A network node receives a packet segment sent by a transmit end, determines a fault-containing packet segment in the packet segment, determines a vacant position formed from a missing packet segment after data connection to a correct packet segment, and matches the fault-containing packet segment and the vacant position to form a complete packet without needing retransmission, so that efficiency of communication of a network node is improved, and energy consumption of communication of a network node is reduced.
Owner:CHINA ACAD OF TELECOMM TECH
Cluster head node determination method, device and system
ActiveCN113115249ANarrow down the search spaceReduce communication energy consumptionParticular environment based servicesNetwork topologiesThe InternetEngineering
The invention discloses a cluster head node determination method, device and system, and relates to the technical field of the Internet of Things. The method comprises the steps: receiving clustering information from a base station; based on an expectation maximization (EM) algorithm, performing clustering operation on each node in the region according to the clustering information, and classifying each node into a cluster to which the node belongs according to a clustering operation result; and based on a particle swarm optimization (PSO) algorithm, determining a cluster head node according to the residual energy of each node in the cluster, wherein the distance from each node to the base station and the compactness among the nodes in the cluster. Through the method and the device, the cluster head search space can be reduced, the cluster head node does not need to be searched by the base station, and the node searches the cluster head node, so that the communication energy consumption can be reduced.
Owner:INDUSTRIAL AND COMMERCIAL BANK OF CHINA
NBIOT sensing equipment, period synchronous acquisition method and device thereof, and medium
ActiveCN110933652AWide coverageImprove performanceSynchronisation arrangementHigh level techniquesData acquisitionEngineering
The invention discloses NBIOT sensing equipment, a period synchronous acquisition method and device thereof and a computer readable storage medium, and the method is applied to the NBIOT sensing equipment and comprises the steps: presetting a time length in advance to carry out the time synchronization with a base station before a periodic acquisition time point of the self-walking of the NBIOT sensing equipment arrives; wherein the preset duration is less than the acquisition period; updating and determining the real duration of the machine period of the NBIOT sensing equipment according to the historical time synchronization result and the current time synchronization result; and determining the machine period number away from the period acquisition time point according to the real duration of the machine period so as to acquire data at the period acquisition time point. The real duration of the machine period of the NBIOT sensing equipment is calculated according to the time synchronization result of the NBIOT sensing equipment and the base station, so that synchronous data acquisition can be accurately realized; according to the method, a synchronization server does not need tobe arranged, the performance is stable, the communication energy consumption is low, and the method can be effectively suitable for an NBIOT network.
Owner:HANGZHOU HOLLYSYS AUTOMATION +1
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