461results about How to "Full Coverage Guaranteed" patented technology

The invention discloses a method for saving the energy of a network in a long term evolution mobile communication system and solving the technical problem that the network can not recover from an energy-saving state to a working state in time according to network capacity conditions under an environment of the traditional LTE ad hoc network. In the invention, a certain cell in the energy-saving state can notify a neighbour cell that the cell is in the energy-saving state through an expanded X2 interface message; and when the neighbour cell generates congestion or overload, the neighbour cell notifies the cell in the energy-saving state through an newly increased energy-saving recovery indication message or an expanded X2 interface load indication message. By adopting the method, the cell in the energy-saving state can carry out energy-saving recovery operation in time according to the congestion or overload state of the peripheral neighbour cell when the neighbour cell generates the congestion or the overload so as to ensure network coverage and meet the requirements of network capacity, and the technical effects of meeting the energy-saving requirements of operators without influencing network quality are achieved.

The invention discloses a WSN (Wireless Sensor Network) distributed-type non-uniform clustering method, which comprises the following six steps of: setting a scenario, initializing a network, calculating a candidate probability, generating a random number to judge whether to become a candidate cluster head, running for a final cluster head, and adding a cluster head. The WSN distributed-type non-uniform clustering method has the outstanding effects that a position factor and an average energy factor are introduced in to balance the residual energy of the whole-network nodes when the cluster head is selected; when the final cluster head is elected, the node residual energy and the neighbor node amounts are comprehensively considered so as to guarantee that the network is completely covered; and when the cluster head is added, the whole-network load is balanced by an energy consumption function cluster entering mechanism based on energy and distance, an energy hole is effectively avoided, the network life cycle is prolonged, and the problem of 'hotspot' is alleviated.

The invention discloses a method of cooperative self-adaptation intelligent planning of a complex mixed path of a carrying robot. The method comprises the following steps: Step 1: constructing a three-dimensional coordinate system of a global map; Step 2: dividing the global map according to floor numbers, so as to acquire a two-dimensional map and a distance matrix of each floor; Step 3: acquiring coordinates of a starting point and a termination point of a transportation task in the three-dimensional coordinate system of the global map according to an instruction of the transportation task and planning a path by adopting a Floyd algorithm according to the distance matrix of each floor and distance matrixes of all corridors and rooms in each floor, so as to acquire a transportation planned path; Step 4: controlling the carrying robot to advance according to the planned path, so as to complete the transportation task. According to the method, module division is performed on a multi-floor environment, so that the calculated amount of the algorithm is decreased; the method comprises the interaction of an access control and an elevator and an obstacle avoidance strategy, so that the carrying robot can be configured to execute the transportation task in an intelligent environment conveniently.

The invention discloses tree trunk whitewashing equipment, and belongs to the field of agricultural machinery. The tree trunk whitewashing equipment consists of a control box, a handle, a lifting structure, a compression spring, spraying frames, coating pumps, coating boxes, conveying pipes, universal wheels, and nozzle and spraying pipe combined structures. The tree trunk whitewashing equipment is characterized in that the control box and the handle are positioned at the upper part of the lifting structure; the universal wheels are mounted at the bottom of the lifting structure; the coating pumps and the coating boxes are positioned on a baseplate at the lower part of the lifting structure; the nozzle and spraying pipe combined structures are mounted on the spraying frames; the coating pumps are separately connected with the coating boxes and the nozzle and spraying pipe combined structures through the conveying pipes; and the compression spring is positioned at the tail ends of the two spraying frames. The equipment realizes semi-automatic trunk whitewashing through such structures as the coating pumps, the spraying frames and the nozzle and spraying pipe combined structures, and greatly improves the working efficiency.

The invention relates to a method for planning a moving path of a multi-anchor-node set of a wireless sensor network. The wireless sensor network comprises a plurality of static unknown nodes and three movable anchor nodes. The method comprises the steps that a dynamic binding relationship and a static binding relationship exist among the three movable anchor nodes and a relationship mode among the three movable anchor nodes is firstly determined; a moving model of the multi-anchor-node set is determined according to environment application requirements, the relationship mode of the three movable anchor nodes, and the positions of the three anchor nodes and energy surplus of the three anchor nodes in a zone; the three movable anchor nodes are located on the peak portions of an equilateral triangle respectively, beacon signals are moved and sent every period T according to the determined moving model, covering of the whole zone is guaranteed by means of the adoption of two kinds of margin loophole solution methods when the beacon signals move to the boundary of the sensing zone, beacon information is continuously monitored and received by the unknown nodes, and position information is obtained through a trilateration method. The method is capable of effectively assisting in location and improving the location accuracy and the location covering rate.

The invention discloses a method for processing an enhanced dedicated transport channel (E-DCH) and a system thereof. The method comprises the following steps that: a terminal selects a short transmission time interval or a long transmission time interval to use an E-DCH resource according to a measurement result of a resident cell; the terminal notifies a node B of transmission time interval information selected by the terminal through scrambling different scrambling codes for a leading part of a physical random access channel (PRACH) which carries the E-DCH. By using the method and the system of the invention, the common E-DCH resource in the cell can be used for scheduling of the short transmission time interval and also can be used for the scheduling of the long transmission time interval. Coverage can be ensured and a high speed of a user can be satisfied.

The invention relates to a regular-hexagon-based mobile anchor node path planning method in a wireless sensor network. The network comprises a plurality of stationary unknown nodes and a mobile anchor node. The regular hexagon based mobile anchor node path planning method in the wireless sensor network includes the steps that the mobile anchor node moves at a constant speed v, and beacon information is broadcast with the position at the moment as the circle center and R as the communication radius at time intervals of t, wherein the beacon information comprises the position and the beacon ID of the mobile anchor node at the moment, the motion path of the mobile anchor node is a regular hexagon, and R=vt; the unknown nodes keep monitoring and receiving the beacon information, and if the three received beacon positions can form a regular triangle and the unknown nodes are located in the regular triangle, the unknown nodes calculate their positions with the trilateration method; when the mobile anchor node moves to the region boundary of the network, the boundary region compensation method is adopted to ensure that the unknown nodes can receive at least three beacon positions which are not in the same line. The regular hexagon based mobile anchor node path planning method in the wireless sensor network has the advantages of being high in positioning accuracy, low in network cost and not prone to environmental influence.

Antennas (50) for RFID tags are made to exhibit circular polarization to give the tag an omnidirectional characteristic. The antennas are crossed dipoles (52,54) with respective feed points (56,58). The signal source (60) is coupled to a splitter (62) having output leads (64) directly coupled to the feed point (56) of dipole (52). The other output leads (66) from splitter (62) are coupled to a delay line (68) with the delayed output coupled to a feed point (58) of dipole (54).

A method and mechanism for protecting the cylindrial coal bunker features that a telescopic aerator is arranged to its top for filling inertial gas, the aerating module is pre-embedded in its wall for filling inertial gas in coal, and the gas blocking module is arranged at its bottom for filling inertial to the position where coal is discharged.

The invention relates to a double-spectrum autonomous navigation sensor and a design method of the double-spectrum autonomous navigation sensor. The sensor comprises a stellar visible light band lens, an earth ultraviolet band imaging lens and a CCD (Charge Coupled Device) sensor, wherein the stellar visible light band lens can only image stellar visible light band information, the earth ultraviolet band imaging lens can image earth ultraviolet band information, and the center of an optical axis of the earth ultraviolet band imaging lens is perpendicular to the center of an optical axis of the stellar visible light band imaging lens; and an image formed by the ultraviolet band imaging lens is reflected to the CCD sensor by a 45-degree reflector, and the two lenses can image in the same CCD sensor. The design method comprises the steps of designing the visible light band lens and selecting the earth ultraviolet band imaging lens and the CCD sensor. The double-spectrum autonomous navigation sensor has advantages of low power consumption, high navigation accuracy and low error, and also has the advantage of utilizing stars for covering the whole heavenly body.

The invention discloses a simulation testing system supporting a plurality of mobile service protocols. The system comprises a protocol processing module for configuring and handling the message formats, message time sequences and message field parameters of the plurality of mobile service protocols, a transmission processing module for providing transmission protocol type supported by the plurality of mobile services and a processing module, a testing pile configuration module for configuring and combining the mobile service protocol types and the transmission types to form testing piles, and an operation processing module for receiving a message request for each configured testing piles, performing format conversion and check for the message content, processing the message through the protocol processing module, converting the processed message into the format of the transmission type corresponding to each testing pile, as well as sending the processed and converted message through the transmission processing module for responding. With the adoption of the system, the simulation messages can be interacted with a service operation supporting system; an interface can be fully tested in the integrated test, and the testing route can be covered completely, so that the quality blind pots can be avoided, and the testing efficiency and quality can be increased.

The invention discloses a railway traffic software testing scene construction method which includes the steps of a test system obtaining operation data of a traction transmission control unit of a rail transit vehicle, classifying operation data, removing repetition data, and generating a software testing scene. A data repeater comprises a first network unit, a data processing unit and a second network unit, which are connected sequentially. The invention further discloses a software test simulation system including a simulation test module, a simulation database and the data repeater. The simulation data are high in reality, and can simulate and restore the real operation situation of a rail transit vehicle, and full coverage of a test scene in a software testing process is effectively ensured. The data repeater has the advantages of simple structure and easy installation.

The invention provides a graphene-silicon-based composite negative electrode material for a lithium ion battery and a preparation method thereof. The preparation method comprises the following steps:step 1, ball milling nano silicon, graphene and graphite to obtain a uniformly-mixed material 1; step 2, adding the material 1 and organic matter carbon source into an organic solvent, stirring, uniformly dispersing, heating to 70 to 90 DEG C, stirring until the organic solvent is dried, drying, and obtaining a material 2; and step 3, granulating the obtained material 2, heating to 150 to 300 DEGC, keeping the temperature constant, after the organic matter carbon source is completely molten, heating to 700 to 950 DEG C, carbonizing at a high temperature, and obtaining an organic matter pyrolytic carbon-coated graphene-silicon-based composite negative electrode material. The graphene-silicon-based composite negative electrode material is prepared from graphene, and the graphne is good in mechanical performance and flexibility, so that the deformation stress of silicon can be alleviated, and the excellent conductivity and heat conductivity can accelerate the electron transfer and heat dissipation.

A method allows reconfigurable multi-element antennas to select the antenna configuration in MIMO, SIMO and MISO communication system. This selection scheme uses spatial correlation, channel reciprocal condition number, delay spread and average Signal to Noise Ratio (SNR) information to select the antenna radiation pattern at the receiver. Using this approach, it is possible to achieve capacity gains in a multi-element reconfigurable antenna system without modifying the data frame of a conventional wireless communication system. The capacity gain achievable with this configuration selection approach is calculated through numerical simulations using reconfigurable circular patch antennas at the receiver of a MIMO system that employs minimum mean square error receivers for channel estimation. Channel capacity and Bit Error Rate (BER) results show the improvement offered relative to a conventional antenna selection technique for reconfigurable MIMO systems.

The present invention discloses a water machine anti-freezing control method. The method comprises: obtaining the current heat exchanger usage state in the operation mode and the running mode; when the running mode is in the cooling mode or the cooling-heating water mode, and when the coating water temperature of the air conditioning heat exchanger is lower than a preset lowest value, controlling the air conditioning heat exchanger to perform automatic reset protection for limited times; when the heat exchanger is not used in the running mode, controlling the water pump of the heat exchanger into the running state and going on for a preset time, if the water inlet temperature is lower the lowest value, controlling the stopping of the machine and controlling to enter the running mode corresponding to the heat exchanger to improve the water inlet temperature of the heat exchanger. The water machine anti-freezing control method can perform different anti-freezing protection aiming at different running modes to ensure that the system can stably operate in each mode so as to improve the stability and the reliability. The present invention further discloses an air conditioning device of the water machine anti-freezing control system and comprising the same.

The invention discloses an automatic efficient full-covering test method of over-the-ground visible light remote sensing satellite image data. The automatic efficient full-covering test method includes: timely receiving data needing detection and performing real-time data uncompressing; performing image data dividing for the uncompressed image data according to channels; performing image data preprocessing for the uncompressed image data according to channels; separating auxiliary data in a channel image data packet; timely storing continuous test samples and playing back the test samples as required; performing image quality testing and performing image data quick looking according to the channels; and displaying the testing result and automatically forming a testing report. Simultaneously, the automatic efficient full-covering test method has the capabilities of image data postmortem analysis processing and open type function extensibility, and has the automatic, efficient and full-covering advantages.

This invention refers to a kind of wall-climbing air-free robot which works on the planking of the ship and the operational method of this robot, which belongs to the technological field of the intelligent construction of the equipment in naval architecture and marine engineering. The system mainly consists of a diamond-shaped main frame, a magnetic adjustable device, a driving mobile mechanism, a sweeping and protective device of the spraying head, a piping system with the function of supplying materials and a piping system to recycle the painting mist. There are four features of this kind of technology. Firstly, it is by equipping the back of the driving wheel with the spraying head that the spraying head can be dragged to paint and the rolling mark can be avoided in the processing of painting. Secondly, it is by applying the protective cover to the spraying head that the painting mist can be recycled and the pollution of it can be prevented. Thirdly, the spraying head can imitate the operational method of the artificial painting work by moving itself transversely. Fourthly, the length of the traversing screw is longer than the gauge of the driving wheel, which ensures that the reciprocating moving trail of the robot can be covered. Finally, the painting mist heater is adopted to prevent the congestion of the piping system caused by solidification of the painting mist under the low temperature. The towing pipe carried by the robot can always be freely downward without perking by the application of the free rotary connector and the extra bending force of the towing pipe can also be prevented by using this free rotary connector. This invention is safe, reliable and highly efficient and it is full of engineering application value.

The invention discloses a design method of a patrol robot full-coverage traversal path planning algorithm. The method includes the following steps that: a one-dimensional Chebychev mapping is selectedas a chaotic dynamic equation, and inverse sine transformation is utilized to improve the chaotic characteristic and uniform characteristic of the chaotic dynamic equation; two inverse sine-improvedone-dimensional Chebychev mapping equations are adopted to construct a two-dimensional chaotic path planner; the patrol area of a robot is decomposed into traversable sub-regions and obstacle regions;transition sub-regions re established, and a transition algorithm is designed; the traversable sub-regions in the patrol area are connected to form a traversal sequence diagram; the patrol robot full-coverage traversal path planning algorithm is designed according to the traversal sequence diagram and the transition algorithm, and the patrol robot full-coverage traversal path planning algorithm can be used for completing a patrol task. The algorithm of the invention has the advantages of simplicity, low repetition rate and high coverage rate, and can ensure the randomness and unpredictabilityof the patrol task while ensuring full coverage of the patrol area.

A method for target network coverage detection comprises the steps of continuously collecting coverage conditions of each mobile network operator network and storing the coverage conditions in a database; receiving a moving track and a period of a predicted terminal device after the terminal device is switched to a target mobile network operator network; searching the database, and judging the coverage conditions of the target mobile network operator network within the moving track and the period of the terminal device; and informing the terminal device whether to execute the switching of the target mobile network operator network according to judgment results. The invention further provides a system for target network coverage detection. According to the method and system for target network coverage detection, it can be detected whether a to-be-switched target network can cover the moving track of the terminal device.

The invention provides a field-oriented method for collecting invisible web resources. The method includes the steps of identifying and designating pages related to a field from grasped pages, obtaining valid form collection, judging the form type of every form in the valid form collection, constructing valid inquiries according to different form types, and outputting results returned for the valid inquiries to be as the collected invisible web resources, wherein the form types refers to single-initem forms or multi-initem forms. The method can achieve automatic indentifying and classifying of an invisible resource inquiry interface, and simultaneously achieves valid construction of inquiries for a simple inquiry interface and a complex inquiry interface. Accordingly, the collection for the invisible resources is achieved. The method not only can be integrated in an existing search engine in a seamless mode, but also can simultaneously collect the invisible resources directed by the simple inquiry interface and the complex inquiry interface.

The invention discloses an unmanned aerial vehicle variable-quantity accurate pesticide applying system and method. The system comprises an unmanned aerial vehicle, a tree crown detection system, a pesticide liquid conveying system and a control system. The tree crown detection system is composed of an image acquisition device and a two-dimensional laser ranging scanning device. The pesticide liquid conveying system is composed of a pesticide box, water pumps, connecting pipes and nozzles. The control system is composed of a flight control module and a pesticide application control module. Thevariable-quantity accurate pesticide applying system is finished through the tree crown detection system, the pesticide liquid conveying system and the control system. By the adoption of the variable-quantity accurate pesticide applying method, the unmanned aerial vehicle can be controlled to hover over the center of a tree crown, the relative height of the unmanned aerial vehicle is adjusted, the flow of each water pump is controlled through the pesticide application control module, pesticide is sprayed at multiple points at the same time, so that the accuracy and comprehensiveness of pesticide application are guaranteed, and the state of an illness of a tree is effectively controlled.

The invention relates to a user management method and calling method of a cluster system as well as a terminal. The method comprises the following steps: establishing a terminal information list and a group information list; receiving a registration request from a terminal; and updating the terminal information list and the group information list based on the registration request. The invention also relates to the calling method of the cluster system, comprising the following steps: receiving a calling request from the terminal, wherein the calling request comprises a group calling target group address; and acquiring an inter-group base station corresponding to the group address obtained from the group information list based on the group address, and informing all member terminals in the inter-group base station of participating in calling tasks. The invention also relates to the terminal which comprises a registration request sending unit and a calling unit. By establishing the terminal information list and the group information list, base stations contained in the group calling of the cluster system can be determined, thus avoiding base stations unrelated to the group calling from participating in the calling, improving the system resource utilization rate and enhancing the system service capability on the premise of ensuring overall coverage of related terminals.

The invention discloses a method for evaluating blast vibration damage of a building based on 3D laser scanning. The method uses a 3D laser scanning technology to scan the building, obtains comprehensive point cloud data of the building, and performs processing and modeling to obtain distribution patterns, length and width expansions of surface cracks in all load-bearing parts. A new local crack density is defined, and the local load-bearing structural damage of the building is judged by the local crack density. The statistics of each load-bearing structural damage are conducted to obtain theoverall local crack density so as to evaluate the overall damage of the building. The vibration displacement of a geometric centerline of the building can also be obtained at the same time by using the 3D laser line scanning. This method can also measure the continuity of a target object, and can obtain a real-time damage state of the building structure. The method can quickly give structural damage results in the judgment of building damage in the fields of mine, water conservancy and hydropower, transportation and the like, thereby having a broad application prospect.

The invention discloses a WMN gateway deployment and channel allocation joint optimization algorithm for emergency communication, and the algorithm comprises the following steps: 1, carrying out the full-coverage gateway deployment of a network, and generating a forwarding tree; 2, searching a link interference range of each link in the forwarding tree to obtain a link interference set; 3, calculating load flow borne by the link according to the forwarding tree; 4, obtaining the conflict amount of each link according to the interference set of the links and the load flow borne by the links, and obtaining the total link conflict amount of the network according to the conflict amount of each link; and 5, establishing a network total link conflict amount mathematical model, and obtaining a channel allocation mode with the minimized network total link conflict amount from the mathematical model by adopting a differential evolution algorithm, so that the algorithm has the advantages of reducing link interference and improving network throughput.