Abstract:
The present invention relates to a mobile device capable of measuring altitude and a method for the same. The mobile device capable of measuring altitude according to the invention includes: a pressure information reception unit capable of receiving pressure information; a pressure calibration unit capable of calculating biased pressure by the pressure information received from the pressure information reception unit; and a pressure sensor capable of outputting revised pressure calibrated with the biased pressure. [Reference numerals] (110) Pressure information reception unit; (120) Pressure correction unit; (130) Pressure sensor; (140) Height measurement unit; (150) GPS receiving unit; (160) Determined height receiving unit; (200) Pressure server; (300) Map data server; (400) GPS correction server; (AA) Network
Abstract:
Disclosed are a method and an apparatus for estimating the position of a terminal by generating a virtual infrastructure. The method for estimating the position of the terminal by generating the virtual infrastructure according to the present invention includes a step of calculating an initial estimated position of the terminal by using a plurality of the installed infrastructures; a step of generating a plurality of the virtual infrastructures by symmetrically moving the infrastructures based on the initial estimated position of the terminal; and a step of recalculating a corrected and estimated position of the terminal by correcting the initial estimated position of the terminal with the virtual infrastructures and the infrastructures. [Reference numerals] (AA) Start; (BB) End; (S301) Calculating an initial estimated position of a terminal by using a plurality of installed infrastructures; (S302) Generating a plurality of virtual infrastructures by symmetrically moving the infrastructures based on the initial estimated position; (S303) Recalculating a corrected and estimated position of the terminal by using a plurality of the infrastructures and a plurality of the virtual infrastructures
Abstract:
감시 시스템은 복수의 센서와 연결되어, 자시 사건 정보와 상기 복수의 센서로부터 획득되는 부가 사건 정보를 기반으로 사건의 발생 여부를 1차적으로 판단하는 센서 노드, 상기 센서 노드와 무선 채널을 통해 연결되어, 상기 센서 노드로부터 상기 사건의 발생을 통지받아 상기 자기 사건 정보와 상기 부가 사건 정보를 기반으로 상기 사건의 발생 여부를 2차적으로 판단하는 마스터 센서 노드, 및 상기 마스터 센서 노드와 연결되어, 상기 사건의 발생 여부를 상기 마스터 센서 노드로부터 보고받는 서버를 포함한다. 센서 노드, 마스터 센서 노드와 서버 간에 자율적으로 사건 발생을 인지하고 판단할 수 있다.
Abstract:
PURPOSE: An apparatus and a method for gathering indoor reference points and measurement information heterogeneous wireless infrastructure are provided to automatically generate reference points in an indoor area and collect measurement information of heterogeneous infrastructure in wireless networking with the generated reference points. CONSTITUTION: A collection route generator (140) generates a collection route in an indoor map according to a collection condition. A reference point determination unit (150) determines a reference point for collecting measurement information of heterogeneous infrastructure on the collection route while a user is on the move, based on information provided by a sensor module unit and an indoor map database. A heterogeneous infrastructure measurement information collector (160) collects measurement information of heterogeneous infrastructure at the reference point. An information combination unit (170) generates a collection result by synthesizing the reference point and measurement information of heterogeneous infrastructure at the reference point. [Reference numerals] (100) Input unit; (110) Display unit; (120) Sensor module; (130) Indoor map DB; (140) Collection route generator; (150) Collection site determination unit; (152) Route tracing unit; (160) Heterogeneous infrastructure measurement information collector; (170) Information combination unit; (180) Combination information DB; (190) Information transmission unit; (200) Control unit
Abstract:
본 발명은 한정된 전력 및 계산능력을 갖는 소형 무선 전송 장치에 적용되는 소형 섹터 안테나의 방사 방향 제어에 있어서, 단순한 계산능력을 요구되거나 계산 능력을 거의 필요로 하지 않으면서, 낮은 전력을 소모하면서 동작이 가능한 소형 섹터 안테나의 방사 방향 제어 장치 및 방법에 관한 것으로서, 일단이 대응하는 기생 소자에 공통으로 연결되며 서로 다른 캐패시턴스를 갖는 다수의 캐패시터로 이루어진 다수의 캐패시턴스 블록을 구비하고, 다수의 스위칭부 및 제어부를 통해, 상기 기생 소자별로 방사방향에 대응하는 캐패시턴스를 갖는 캐패시터를 선택 연결함으로써, 제어가 간단해지고, 방사 방향 제어를 위한 전력 소모를 줄일 수 있도록 한 것이다. 무선 센서 네트워크(WSN), 지향성 안테나, 방사 방향, 스위치, 캐패시터
Abstract:
PURPOSE: A notifying/avoiding method of a complex situation of the data transmission in a wireless mesh network, and a mesh node for the method are provided to rapidly transmit transmission data by considering the complex situation. CONSTITUTION: A mesh node for notifying/avoiding a complex situation of the data transmission in a wireless mesh network comprises the following: a message receiving unit(310) receiving a RANN(route announcement) message; a complexity calculating and processing unit(320) calculating the data complexity; a message transmitting unit(330) transmitting the RANN message to a mesh node on the next route; and a dividing Q when the data transmission for the Q is requested.
Abstract:
PURPOSE: An ad-hoc wireless communication method which uses a sector antenna, restoring method, and wireless communication system are provided to rapidly restore a communication area of a transmission apparatus. CONSTITUTION: A first node transmits a request message for setting up communication link while changing transmission power to each center of a sector antenna(S210). The first node receives a response message corresponding to the request message from the receiving node of each sector(S220). The first node constitutes the angular sector transmission power based on the received response message to a routing table(S230). The first node transmits a message data with reference to the routing table(S240).
Abstract:
PURPOSE: A sensor network device and a routing method using the same are provided to suggest a routing mechanism based on characteristic of an application program for routing each sensor node, thereby satisfying (m.k) characteristic. CONSTITUTION: A plurality of sensor nodes(a1~a7) constitutes a forwarding table for real time transmission through link cost information of each neighboring sensor node. The sensor nodes detect a link group corresponding transmission requirements of a data packet received through the forwarding table. The sensor node transmits the data packet to a next sensor node in real time. A sync node(b) transmits the data packet to an external network through a gateway.
Abstract:
PURPOSE: A method for updating a multihop remote protocol in a wireless mesh network is provided to update a mesh terminal protocol. CONSTITUTION: An agent terminal requests the setting of connection(S311,S321), and a commander terminal sets up the connection with the agent terminal. The agent terminal receives and stores a new protocol transferred from the commander terminal through the set connection(S312,S322). The agent terminal requests the release of the connection through the commander terminal(S313,S323). The commander terminal releases the connection with the agent terminal.