摘要:
A wall climbing robot using an Indoor Global Positioning System (IGPS) provided in a room is disclosed. The wall climbing robot includes a navigation receiver configured to receive rotating fan beams emitted from one or more navigation transmitters of the indoor global positioning system, and recognize the rotating fan beams as IGPS signals; a robot frame provided with the navigation receiver mounted; a mobile controller configured to be installed on the robot frame, and to recognize and determine its own position using the IGPS signals; and a drive mechanism configured to travel along the surfaces of the room under control of the mobile controller. The mobile controller includes a central processing unit, an input/output unit, a motion control unit, a drive control unit, a navigation control unit, a sensor signal processor, an emergency processing unit, and an alarm generator.
摘要:
A wall climbing robot using an Indoor Global Positioning System (IGPS) provided in a room is disclosed. The wall climbing robot includes a navigation receiver configured to receive rotating fan beams emitted from one or more navigation transmitters of the indoor global positioning system, and recognize the rotating fan beams as IGPS signals; a robot frame provided with the navigation receiver mounted; a mobile controller configured to be installed on the robot frame, and to recognize and determine its own position using the IGPS signals; and a drive mechanism configured to travel along the surfaces of the room under control of the mobile controller. The mobile controller includes a central processing unit, an input/output unit, a motion control unit, a drive control unit, a navigation control unit, a sensor signal processor, an emergency processing unit, and an alarm generator.
摘要:
Disclosed is an apparatus for monitoring a building status achieved during building a cavity frame such as an internal freight warehouse of a cargo. The apparatus for monitoring a building status of a cavity frame includes a portable computer, a central host computer, and an indoor global positioning system. The portable computer remotely accesses the central host computer and downloads information on a work schedule, and the central host computer receives information on problems during works from the portable computer. The indoor global positioning system remotely accesses the central host computer to transmit positional information of a working robot in the cavity frame. The central host computer then transmits, to the working robot, an instruction to perform a corresponding work at a position of the working robot.
摘要:
A liquid crystal display device, includes a first substrate including a first insulating substrate, a first thin film positioned on the first insulating substrate, and a first alignment layer positioned on the first thin film and including a first exposing area that exposes the first thin film, a second substrate facing the first substrate and including a second insulating substrate, a spacer positioned between the first substrate and the second substrate and including at least a part that corresponds to the first exposing area, and a liquid crystal layer positioned between the first substrate and the second substrate.
摘要:
A service provider discovery method in a wireless network environment, includes receiving, by the gateway, a service request (SREQ) packet which is broadcast from a first mobile node in the ad-hoc network; updating and transmitting, by the gateway, the SREQ packet to a service repository which stores at least one service provider information, in the infrastructure network; transmitting, by the service repository, a service reply (SREP) packet containing information relating to a service provider which provides a service requested by the SREQ packet to the gateway, and updating and transmitting, by the gateway, the SREP packet to the first mobile node. Accordingly, the service can be used in association with the ad-hoc network and the infrastructure network.
摘要:
A server, terminal, and method for supporting mobility in a network are provided. A server includes a storage which stores a double chord lookup table including server search information based on identifiers and location information of terminals on a network, a controller which finds a server for providing an optimal routing path between a receiving terminal and a transmitting terminal for sending a packet to the receiving terminal, using the double chord lookup table, where a trigger including an identifier and location information for identifying the receiving terminal is received from the receiving terminal, and a communicator which reports the location of the found server to the receiving terminal and the transmitting terminal.
摘要:
A hand-off method including detecting edge nodes located at edges of a mobile ad-hoc network (MANET); retransmitting, at the detected edge nodes, an Internet gateway advertisement message (IGAM) at a new period; and performing a hand-off of a mobile device moving from an infrastructure network to the MANET using the retransmitted IGAM.
摘要:
A method and apparatus for handover based on a dynamic beamforming scheme, which is adapted to a mobile communication system including a mobile node and a base station, is provided. The apparatus includes a mobile profile information processor configured to process mobile profile information based on a location of the mobile node, and to generate a beamforming control signal according to the mobile profile information; a handover indication message processor configured to generate a first handover indication message incorporating the mobile profile information in preparation for a handover of the mobile node; a transceiver configured to transmit the first handover indication message; and a beamforming controller configured to control beamforming for transmission of the transceiver according to the beamforming control signal.
摘要:
A service provider discovery method in a wireless network environment, includes receiving, by the gateway, a service request (SREQ) packet which is broadcast from a first mobile node in the ad-hoc network; updating and transmitting, by the gateway, the SREQ packet to a service repository which stores at least one service provider information, in the infrastructure network; transmitting, by the service repository, a service reply (SREP) packet containing information relating to a service provider which provides a service requested by the SREQ packet to the gateway, and updating and transmitting, by the gateway, the SREP packet to the first mobile node. Accordingly, the service can be used in association with the ad-hoc network and the infrastructure network.
摘要:
A method of electing a leader node in an ad-hoc network including a plurality of nodes in the ad-hoc network transmitting node solicitation (NS) messages and calculating distances between the plurality of nodes using information included in the NS messages, determining whether the plurality of nodes are candidate leaders by calculating center position values based on the distances calculated by each of the nodes, and electing the leader node based on information included in leader election option messages transmitted by each candidate leader.