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236results about How to "Avoid detours" patented technology
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System for measuring turbulence remotely
ActiveUS7598901B2Improve usabilityIncrease coverageBeacon systems using radio wavesClear air turbulence detection/forecastingEnergy variationEngineering
A system and method for detecting turbulence includes several mobile platforms, a mobile platform velocity sensor, and several electromagnetic energy transmitters and receivers. The receivers receive the energy transmitted by the transmitter(s) after it has traveled along a path subject to the turbulence. The receivers detect alterations of the energy caused by the turbulence and filter the alterations for effects of the mobile platform velocity (on which either a transmitter or receiver is located). Additionally, the system may create a three-dimensional model of the. In another preferred embodiment, the present invention provides a method of detecting turbulence using a mobile platform. The method includes receiving electromagnetic energy that has traveled along a path subject to the turbulence and determining the alteration to the energy caused by the turbulence. The alterations are filtered of the effects of the velocity of the mobile platform on which the receivers are preferably located.
Owner:THE BOEING CO
Method for recognizing unknown roads in current navigation map and carrying out navigation on unknown roads
ActiveCN105387863ANavigation implementationEasy to useInstruments for road network navigationComputer scienceMarine navigation
The invention discloses a method for recognizing unknown roads in a current navigation map and carrying out navigation on the unknown roads. The method comprises the following steps: (1) collecting and extracting information of unknown roads: obtaining the initial driving track data through track collection, processing and analyzing the track data to extract the information of unknown roads, integrating the unknown roads into known roads, and providing the map for navigation; (2) carrying out navigation on unknown roads: after the information of unknown roads is obtained, calculating the navigation information (turn-around direction and turn-around distance) of unknown roads, combining realtime positioning, and matching the realtime position to the current unknown roads to realize realtime navigation. The provided method can extract the information of unlabelled roads, which exist on a navigation map, through historical tracks, conveniently navigates drivers on the unknown roads, avoids the phenomenon that the drivers are detoured or cannot reach the destination due to slow update of navigation map, and is suitable for the field of logistics distribution.
Owner:浙江网新恒天软件有限公司
Electric automobile charge scheduling method and charge scheduling device
InactiveCN103262112AImprove convenienceImprove adaptabilityCharging stationsReservationsInformation deviceEngineering
Owner:AISIN SEIKI KK
Method and apparatus for user device switching from packet domain to circuit domain
ActiveCN1881958AAvoid modificationIn line with the principle of savingHybrid switching systemsData switching by path configurationAccess networkUser device
The invention relates to a method for switching the user device from group field to the circuit field, for solving the defects of present technique as complex route, waste resource, and high cost, wherein said method comprises: when the user device needs switch in the original conversation, the user device obtains the switch number; the user device uses said switch number as the called number, via simulated circuit field access network, to initialize circuit field conversation request to the circuit field core network; the circuit network conservation request is used to build the call branch from the circuit field to the group field; based on the information of said request, the conservation request is related to the original conservation of user device; at the same time, the switch from the group field to the circuit field air interface is initialized; when the user receives the switch command, the user device informs the network to complete the switch from the group field to the circuit field.
Owner:HUAWEI TECH CO LTD
Vehicle navigation method capable of automatically correcting navigation track
InactiveCN1920485AAvoid congestionAvoid traffic accidentInstruments for road network navigationRoad vehicles traffic controlGraphicsSpeech sound
The invention relates to a vehicle navigation method which can automatically correct navigation path, especially a traffic control method for transmitting navigation instruction to the vehicle with planet positioning and communicating devices, wherein said method comprises: the navigation terminal of vehicle receives and stores the navigation path data of group ground mark sequence provided by the navigation center; when driving, the navigation terminal, based on present ground mark, judges if the driving direction is normal and the bias amount with present navigation road, and if said vehicle is deflected from present navigation path, sends vehicle recognize code and present position to the navigation center; the navigation center based on electric map calculates out the navigation path data of one group of ground mark sequence to be sent to the navigation terminal; and the navigation terminal via the navigation path data plays the instruction voice of present target ground mark and plays navigation instruction information; when the vehicle reaches target ground mark, the navigation terminal based on navigation path refreshes present target ground mark.
Owner:XIAMEN YAXON NETWORKS CO LTD
Paging method, wireless network controller and access gateway
ActiveCN101159971AReduce latencyReduce overheadData switching by path configurationRadio/inductive link selection arrangementsMobile communication systemsPaging
The invention discloses a paging method, a wireless network controller and an access gateway used in a mobile communication system. The inventive method comprises the steps: the access gateway, based on an instruction of caching user data sent by the wireless network controller, receives the data of a designated user and then caches the data for the user, and simultaneously sends a data arrival notification message with a user identification to the wireless network controller; the wireless network controller pages the terminal corresponding to the user identification via a base station and sends an instruction message with the user's identification of transmitting the cached data to the access gateway after the paging arrives the terminal; and the access gateway receives the instruction message and then sends the cached data of the user corresponding to the user identification to the terminal where the user locates via the base station. The invention can reduce the signaling cost during the paging process, avoid the route of data transmission and reduce the network delay.
Owner:HUAWEI TECH CO LTD
Indoor navigation method and mobile equipment
InactiveCN104949675ASolve the problem of not being able to find the return routeFlexible accessNavigational calculation instrumentsMobile deviceMarine navigation
The invention provides an indoor navigation method and mobile equipment. According to the indoor navigation method, the mobile equipment determines the current indoor initial position of a user based on the operation of the user in a preset indoor map; a track route beginning with the indoor initial position is generated according to the movement path of the user, sensed by a motion sensor; when the return navigation operation of the user is acquired, a return path corresponding to the rack route is provided for the user. The indoor navigation method and the mobile equipment have the advantage that the problem that the user cannot find out the return path in a room is effectively solved.
Owner:SHANGHAI DROI TECH CO LTD
Device, system and method for realizing inter-switching of circuit domain and packet domain
ActiveCN1882119AAvoid dependenceAvoid detoursWireless network protocolsRadio/inductive link selection arrangementsIntelligent NetworkApplication server
The invention relates to a device fro switching circuit field to group field, and relative system and method, wherein said device comprises: circuit field network interface unit, group field network interface unit and switch control unit. Said method comprises: FBSC based on the circuit field mobile user mark searches for the attach field information of group field of mobile user; using said attach field network to initialize the traditional circuit field switch conversation process to the application server; the application server records said switch conversation and waits for switching conversation; the mobile station uses group field network to initialize the switch conversation to the application server and carry the mobile user circuit field mark; the application server, based on the mobile user circuit field mark searches for former record, to build conversation with mobile user. The invention can avoid the dependence on the intelligent network, avoid alternative route and save the network resource.
Owner:HUAWEI TECH CO LTD
Scene-picture-based advertising method and system
The invention relates to a scene-picture-based advertising method. The method comprises: rough information of a user is obtained; according to the rough information, selected positions within a first preset range are obtained and first scene pictures corresponding to all selected positions are obtained; a user shoots a second scene picture which the user watches currently and uploads the second scene picture to a server; according to a similarity degree of the first scene pictures and the second scene picture, comparison is carried out to obtain a current position of the user, wherein the first scene pictures are panoramic pictures shot at all the selected positions by rotation around the positions; and when the second scene pictures are uploaded to the server, advertising information is displayed to the user. On the one hand, the user can obtain an accurate positioning coordinate; and on the other hand, the advertiser can carry out advertising at a taxi taking platform. Meanwhile, the invention also provides a scene-picture-based advertising system.
Owner:GUANGZHOU WOXI INFORMATION TECH +1
SDH network planning design method for multi-modularized optical fiber
InactiveCN101420321AIncrease profitAvoid detoursMultiplex system selection arrangementsTime-division multiplexFiberNetwork link
The present invention pertaining to the computer network communication technology field provides a SDH network planning and designing method of multi-module fibers, concretely relates to the fiber SDH network planning and designing and also relates to resource management and maintenance of the optical SDH network. According to the present invention, the cost of network fiber is made the minimum after the planning and designing under the condition that communication state between nodes, node positions and service requirements are known, and the given modularized fiber type is STM model. The method comprises the steps of service ordering, routing for each service and performing fiber resource configuration from the high service to the low service, and optimizing the fiber module cost to all the links. The present invention realizes that under the condition that the network topology and service requirements are known, whole planning of SDH mesh network with un-given upper limit of link capability is performed, and routing distribution and LSP resources are optimized through the multi-modularized weighting set, resource distribution and multi-modularized fiber cost optimization, under the condition that the network devices and the like are satisfied, finally, the configuration of the network link capability is close to the minimum.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
Packet transmission method and proxy device for Internet group management protocol
ActiveCN101483655AAvoid detoursRealize load sharingData switching networksTraffic capacityComputer network
The invention discloses an IGMP message transmitting method comprising that an IGMP agent device receives IGMP adding messages from a host; the IGMP agent device obtains the multicast source address corresponding to the IGMP adding messages, searches a uni-cast routing table of itself according to the multicast source address to obtain an outgoing interface of the next hop; if the outgoing interface is an uplink interface of IGMP, the IGMP agent device sends out the IGMP adding messages through the outgoing interface; if the outgoing interface is not an uplink interface of IGMP, the IGMP agent device selects an interface from the IGMP uplink interfaces of itself and sends out the IGMP adding messages through the selected interface. The invention also discloses an IGMP agent device. The invention avoids rounding of multicast flows and realizes load-sharing between IGMP uplink interfaces.
Owner:NEW H3C TECH CO LTD
Navigation method and device capable of accurately searching points of interest around navigation path
ActiveCN103900591AAvoid detoursInstruments for road network navigationMarine navigationLinear distance
The invention relates to a navigation method and a device capable of accurately searching points of interest around a navigation path. The method includes: inputting POI information; performing POI searching along the navigation path so that a structure of fish bones is formed between the positions of the searched POI information and the current navigation path; establishing corresponding navigation paths; displaying the navigation paths having the structure of the fish bones and navigating. The device comprises an inputting module used for inputting the POI information; a navigation path establishing module used for performing POI searching along the navigation path so that the structure of fish bones is formed between the positions of the searched POI information and the navigation path and is used for establishing the corresponding navigation paths; and a navigation module used for displaying the navigation paths having the structure of the fish bones and navigating. The method and the device can avoid detour caused by a large difference between the actual path and a linear distance.
Owner:SHANGHAI PATEO ELECTRONIC EQUIPMENT MANUFACTURING CO LTD
Method for switching terminal and corresponding communication network
InactiveCN102123378AAvoid detoursEasy to moveNetwork data managementProcessor registerMobility management
The invention discloses a method for switching a terminal and a corresponding communication network. The communication network comprises a wireless side network element, an access gateway which is connected between the wireless network element and a packet data network, a mobility management node and an identity position register. In the process of switching the terminal, when a target access gateway different from the original access gateway is determined, the target access gateway allocates the identifier of a new position for the terminal and saves the mapping information of the identifier of the identity of the terminal and the identifier of the new position; a target mobility management node or the target access gateway initiates registration and updates the identifier of the position of the terminal in the identity position register to which the terminal belongs; and the terminal is switched from the original wireless side network element to a target wireless side network element, and is connected to the packet data network by the target wireless side network element and the target access gateway, so that data messages is encapsulated and forwarded between the terminal and a communication opposite end. Through the invention, the route detours of data packets can be reduced, transmission delay and bandwidth waste can be lowered.
Owner:ZTE CORP
Method and device for determining assembly area
InactiveCN106895845AReduce multiple callsShorten driving distanceInstruments for road network navigationSimulationIndustrial engineering
The invention discloses a method and a device for determining an assembly area. The method comprises the following steps: according to positions of a first user and a second user as well as a target position, generating a first path, and determining a candidate position corresponding to the position of the first user; according to the candidate position, the target position and the position of the second user, generating a second path, and determining the candidate position to be the assembly area for going to the target position by the first user and the second user when the second path is determined to be shorter than the first path. Compared with the prior art, the method, provided by the invention, for determining the assembly area can determine an appropriate assembly area for users of both sides, so that convenience of the users of both sides when going to the assembly area is enhanced, and travel distance and travel time can be reduced.
Owner:ADVANCED NEW TECH CO LTD
Method, device and system for sending push messages in multimedia message service
ActiveCN101577867AReduce delivery delayReduce wasteMessaging/mailboxes/announcementsTransmissionTransmission time delayIp address
The invention relates to the technical field of mobile communication, in particular technology for sending push messages in multimedia message service. The invention discloses a method, a device and a system for sending the push messages in the multimedia message service to solve the problem of an alternate route when the push messages are transmitted and shorten the transmission time delay of multimedia messages. The method comprises the following steps: acquiring an HLR IP address to which a receiver terminal belongs after a receiver home location MMSC receives the multimedia messages which are sent to the receiver terminal; acquiring a receiver visitor location MSC information from a corresponding HLR according to the HLR IP address; and transmitting the push messages to the receiver terminal through a corresponding MSC according to the receiver visitor location MSC information. The invention simultaneously discloses an address inquiring method and an address inquiring device.
Owner:CHINA MOBILE COMM GRP CO LTD
Method, system and apparatus for implementing conditional call forwarding
InactiveCN101431738AAvoid cross-network call circuitousReduce financial burdenConnection managementCommmunication supplementary servicesCall forwarding
The invention discloses a method of realizing conditional call forwarding; the method comprises: ensuring that the called mobile terminal currently occurs internetworks roam according to the conditional call forwarding optimization routing ORCCF intelligent service when ensuring the called mobile terminal satisfying the call forwarding condition; releasing the speech channel of the calling terminal and the called mobile terminal; forwarding the calling from the calling terminal to the called mobile terminal into the forwarding number corresponding to the called mobile terminal from the calling terminal. The invention further discloses a system and device of realizing conditional call forwarding. The invention can avoid internetworks roam cost paying for call forwarding when the called user internetworks roams in the conditional call forwarding service.
Owner:深圳市前海滕翔科技信息有限公司
Satellite network dynamic routing method based on queue monitoring and congestion prediction
ActiveCN110290066AAvoid detoursAvoid wastingRadio transmissionData switching networksSatelliteLarge networks
The invention discloses a satellite network dynamic routing method based on queue monitoring and congestion prediction, which is suitable for a low-orbit satellite network with large network flow and frequent change, has high robustness, can meet the lightweight characteristic of the requirement of satellite computing resources, and belongs to the technical field of communication. The method is based on the dynamic routing algorithm, and can adapt to the network topology structure change caused by the rapid motion of the satellite. A queue monitoring method is used for monitoring the flow of the satellite, load rates can be calculated for different links connected with the same node, and therefore the situation that bandwidth resources of other available links of the node are wasted due to all flow bypassing caused by congestion of a certain link on the node is avoided. Meanwhile, load distribution can be carried out before congestion occurs by predicting the congestion which is about to occur in the queue, so that packet loss caused by the congestion which occurs already is reduced.
Owner:CHINA ACADEMY OF SPACE TECHNOLOGY
Multi-destination path navigation method
ActiveCN103712629AAvoid detoursAvoid timeInstruments for road network navigationComputer scienceMarine navigation
The invention discloses a multi-destination path navigation method, comprising the following steps: a) selecting an interest point through a mobile terminal to serve as a destination, sending a path navigation request to a server, and calculating a first navigation path through the server with the destination as end point; b) searching interest points with the same name or category within a preset range on the surrounding of the destination through the server; c) if interest points with the same name or category exist, using all searched interest points as end points, and continuing to calculate the navigation path to obtain a plurality of second navigation paths; d) respectively comparing the plurality of second navigation paths with the first navigation path, and if a second navigation path with better pre-estimated distance or pre-estimated time obviously exists, simultaneously sending the second navigation path and the first navigation path to the mobile terminal for selection. By adopting the multi-destination path navigation method provided by the invention, detour or time waste caused by improper destination selection of a user is avoided, and the navigation efficiency is greatly improved.
Owner:SHANGHAI ONSTAR TELEMATICS
Robot scheduling method and device
ActiveCN110908381AAvoid detoursAvoid congestionPosition/course control in two dimensionsVehiclesLogistics managementDistributed computing
The invention relates to the technical field of logistics, in particular to a robot scheduling method and device, which are applied to a warehouse comprising a robot, and the method comprises the following steps: tracking a scheduling event, and filling a matching pool with the scheduling event, the scheduling event located in the matching pool being a target scheduling event; establishing a tripartite graph matching model according to the current position of the robot and the target scheduling event; according to the tripartite graph matching model, allocating a scheduling task to the robot,and the scheduling task at least comprising a task destination; and based on disjoint path conditions of time and space, determining a motion path and a motion state of the robot between the current position of the robot and the task destination of the scheduling task. According to the invention, the phenomena of detouring and congestion of the robot can be avoided, manual forced intervention is not needed, and the transportation efficiency of the robot is improved.
Owner:上海万筹科技有限公司
Mobility management method, gateway node and core network
ActiveCN102625405AAvoid detoursDoes not affect consistencyWireless communicationManagement functionsMobility management
The invention discloses a mobility management method, a gateway node and a core network. During a relocation process between serving general packet radio service (GPRS) support nodes (SGSN), when an original gateway GPRS support node (GGSN) accessed to a terminal determines that it is needed to switch a GGSN according to an update packet data protocol (PDP) context request sent by a new SGSN of the terminal, the PDP context of the terminal is pushed to a new GGSN and first address information of the new GGSN is notified to the new SGSN; the new GGSN sends downlink data sent to the terminal to the new SGSN according to the address of the new SGSN contained in the PDP context of the terminal and tunnel endpoint identifier (TEID); and the new SGSN sends uplink data of the terminal to the new GGSN according to the first address information of the new GGSN. According to the invention, a location management function is realized; subscriber identifier and locator separation of the terminal is supported; and a routing circularity problem can be solved. Moreover, consistency of an existing relocation flow will not be influenced, thereby realizing good feasibility.
Owner:射阳县兴桥红星纺织工业园管理有限公司
Three-dimensional emergency escape guiding method based on wireless sensor network
ActiveCN101592918AAvoid blind escapeAvoid detoursBreathing protectionAdaptive controlNODALWireless sensor networking
The invention relates to a three-dimensional emergency escape guiding method based on a wireless sensor network, which comprises the following steps: 1) node initiation, namely setting a weight <1, w> of each node, wherein 1 refers to the danger level of a floor where the node is positioned, and w refers to the danger level of the node in the floor, and setting the following parameters: a constant D, Ai, Ai and e[i, j]; and 2) guiding process, wherein when a sensor node x senses fire, the sensor node x sets the self weight as Adis and simultaneously broadcasts an emergency message to the network, and other nodes decide self guiding directions through calculation after receiving the emergency message; and when a sensor node y receives an emergency message sent by a neighbor node z, the sensor node y updates a weight of z in a neighbor list by Az, and directs to a neighbor with the minimum weight. The method can obtain the optimal escape path, and has good reliability.
Owner:ZHEJIANG UNIV OF TECH
One card multiple number processing method, system and gateway equipment
InactiveCN101459888ASolve difficult deployment problemsAvoid the defects of difficult operationMessaging/mailboxes/announcementsNetwork data managementTelecommunicationsTransfer point
The embodiment of the invention provides a method, a system and a gateway device for processing one-card with multi-number, wherein the method comprises the following steps: intercepting information transmitted through a signaling transfer point of a visiting place, obtaining the address information of a VMSC of an MS, which is adhered on the visiting place and home region user data, transmitting a one-card multi-number using enquiring information to the MS, distributing auxiliary numbers of the visiting place to a mobile terminal and distributing the auxiliary number for the mobile terminal according to the use confirming information transmitted by the MS. The embodiment of the invention realizes the one-card with multi-number service through opening accounts of the auxiliary number of the visiting place in advance in the visiting place HLR and distributing the auxiliary number for roaming users through an SMG set in a visiting place network, solves the problem of difficult allocation due to that the one-card with multi-number service requires the visiting place to leave a number section for the home region, and prevents the defects of difficultly operation due to that the one-card with multi-number service needs modifying an amount of route data, and the method further can effectively prevent the singling circuitry.
Owner:SHENZHEN TINNO WIRELESS TECH
Multi-agent group cooperation strategy automatic generation method
PendingCN112488310ARealize automatic generationAvoid detoursNeural architecturesNeural learning methodsEngineeringHuman–computer interaction
The invention relates to the field of artificial intelligence, and discloses a multi-agent group cooperation strategy automatic generation method, which defines agents and strategy networks thereof according to a specific application environment, evaluates the networks and experiences, and realizes automatic generation of a multi-agent cooperation strategy. The adopted algorithm provides three innovations on the basis of the MADDPG algorithm: trace information, multi-agent cooperative team formation and birth and death training. The learning history of the intelligent agent in the environmentcan leave a trace amount of information in the environment, and the user can learn the experience of other people through the trace amount of information intelligent agent to avoid walking; the training efficiency can be improved through cooperative team formation of the multiple intelligent agents; finally, the agents with excellent learning ability in the environment are inherited to all information of themselves through filial generations to continue to be trained through birth and death training, the agents with poor learning ability in the environment return to the initial point to be trained again through death, and the generation and evaluation efficiency of the multi-agent cooperation strategy can be greatly improved.
Owner:厦门渊亭信息科技有限公司
System for implementing mobile communication based on WCDMA core network and terminal access method
InactiveCN102056151AAvoid detoursMaintain propertiesSecurity arrangementNetwork data managementGeneral Packet Radio ServiceAccess network
The invention discloses a system for implementing mobile communication based on a WCDMA (Wideband Code Division Multiple Access) core network and a terminal access method. The system comprises a wireless access network, a service GPRS (General Packet Radio Service) node (SGSN Serving GPRS Supporting Node), a gateway GPRS node (GGSN Gateway GPRS Supporting Node), and an identity location register (ILR) connected with the SGSN and / or the GGSN, wherein the GGSN is used for maintaining the session connection of a terminal, allocating an RID (Radio Identifier) to the terminal, directly or indirectly inquiring the RID of a communication end to the ILR, maintaining Access Identifiers (AID) and RID mapping information of the terminal and the communication end, implementing the routing and forwarding of data messages and controlling the cross-GGSN switching of the terminal; the SGSN or the GGSN is used for registering and deregistering the RID of the terminal to the ILR; and the ILR is used for receiving a registering request and a deregistering request to a home subscriber terminal thereof, maintaining AID-RID mapping information of the home subscriber terminal, receiving an inquiry request to the RID of the terminal and returning the RID in the request, corresponding to the AID of the terminal, to an inquiry requester.
Owner:ZTE CORP
A switching method and system for wireless evolution network
InactiveCN101060692AImprove satisfactionAvoid wastingWireless network protocolsRadio/inductive link selection arrangementsTelecommunicationsProper treatment
The disclosed switch method in wireless evolution network (WEN) comprises: when AT switches, Capp or LMHA decides whether there is a switch between LMHA; if yes, selects the proper treatment way. This invention reduces resource waste and system complexity, and provides more experience for user.
Owner:HUAWEI TECH CO LTD
Routing processing method and apparatus
ActiveCN108199968AAvoid detoursSave bandwidthNetworks interconnectionTraffic capacityPrivate network
The invention relates to a routing processing method and apparatus for a first VTEP device in a multi-homing network. A first host simultaneously accesses the first VTEP device and a second VTEP device in the multi-homing network, and the method comprises the following steps: receiving a first MAC / IP advertisement routing sent by the second VTEP device; traversing all AC ports associated with theVXLAN identifier in the first VTEP device, and searching a second AC port matched with a private network identifier and the ESI in all AC ports associated with the VXLAN identifier; and when the second AC port is found, generating a forwarding table entry corresponding to the first host according to the second AC port. By adoption of therouting processing method and apparatus according to the embodiment of the invention, the bypass of the remote traffic between the VTEP devices in the EVPN multi-homing system can be avoided by generating the forwarding table entry according to the second AC port.
Owner:NEW H3C TECH CO LTD
A message forwarding method, a switch, and a computer-readable storage medium
InactiveCN109088819AFast switching speedAvoid detoursData switching networksComputer hardwarePacket loss
A method for forwarding a message is provided in an embodiment of that present disclosure, switches and computer-readable storage media, relating to the technical field of communication.When a distributed aggregation port of the first network device fails, transmitting the message to be forwarded to the second network device through the IPL corresponding to the IPP added to the distributed aggregation interface, the MAC table entry and the ARP table entry corresponding to the IP address of the target network device learned by the DR device A and the DR device B are reserved, there is no need to re-receive the message and re-learn the forwarding table item corresponding to the Internet protocol address of the target network equipment, so that the switching speed of the message forwarding ofthe DR system is greatly improved and the packet loss is reduced.
Owner:NEW H3C TECH CO LTD
Self-Anchored Catalyst Metal-Assisted Chemical Etching
ActiveUS20170243751A1Avoid detoursAvoid delaminationSemiconductor/solid-state device manufacturingEtchingPtru catalyst
A method of metal-assisted chemical etching comprises forming an array of discrete metal features on a surface of a semiconductor structure, where each discrete metal feature comprises a porous metal body with a plurality of pores extending therethrough and terminating at the surface of the semiconductor structure. The semiconductor structure is exposed to an etchant, and the discrete metal features sink into the semiconductor structure as metal-covered surface regions are etched. Simultaneously, uncovered surface regions are extruded through the pores to form anchoring structures for the discrete metal features. The anchoring structures inhibit detouring or delamination of the discrete metal features during etching. During continued exposure to the etchant, the anchoring structures are gradually removed, leaving an array of holes in the semiconductor structure.
Owner:THE BOARD OF TRUSTEES OF THE UNIV OF ILLINOIS
Residential area route map forming system and method based on crowd sensing network
ActiveCN105979580AMultipath selectionGuaranteed validityInstruments for road network navigationLocation information based serviceFeature matchingCollections data
The invention relates to application of a wireless network, and provides a residential area route map forming method based on a crowd sensing network. The method mainly comprises the crowd sensing network and a route map server. The crowd sensing network comprises an up service link and a down service link which carry out data interaction with the route map server. The route map server comprises an online working mode and an offline working mode. The online working mode comprises two working processes of feature matching and user positioning. The offline working mode comprises three parts of initialization, data collection and update and route formation. According to the residential area route map forming method based on the crowd sensing network provided by the invention, a method for periodically increasing, keeping and deleting residential area map routes is established. Under the condition that there is no GPS signal, the current route map of a residential area is periodically updated by use of wireless signals of a wireless access point; a user can know the route map and walking path of the currently located residential area through the mobile terminal; and the travel efficiency of the user can be effectively improved.
Owner:GUANGDONG UNIV OF TECH
Path planning method and device for robot, and electronic equipment
PendingCN109240303ASolve technical problems that consume more energyReduce energy consumptionPosition/course control in two dimensionsSimulationWalking time
The invention discloses a path planning method and device for a robot, and electronic equipment. The method comprises the following steps of, when the robot needs to arrive at a target cleaning line from a first position point, extracting a target historical path from the first position point to the target cleaning line from historical data, wherein the historical data stores previous walking paths of the robot, and the target historical path is an unreachable path on an environment map; and controlling the robot to try to walk on the basis of the target historical path to arrive at the targetcleaning line from the first position point. The method and the device solve the technical problems that the robot wastes walking time and consumes relatively much energy because the robot possibly takes a detour when walking according to a path planned by the environment map in the prior art, and achieve the technical effects of obtaining a shorter walking path, avoiding the detour, saving the walking time and reducing the energy consumption of the robot.
Owner:BEIJING QIHOO TECH CO LTD
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