Abstract:
PURPOSE: A movable environment controlling apparatus is provided to consider the condition of the plants in a greenhouse and not the work time for obtaining minimum space for controlling the environment of the greenhouse. CONSTITUTION: A controlling node(20) is installed at a ceiling part. A movable part is installed between a ceiling part and a frame(5) for the ceiling of the greenhouse to have a pulley(41) which moves up and down. The controlling part operates the movable part according to the set conditions so that the space for controlling the environment of the greenhouse which is controlled by the controlling node is controlled by moving the ceiling part up and down. [Reference numerals] (42) Motor; (AA) Boiler 1
Abstract:
PURPOSE: A channel resource management device and a method thereof are provided to manage PHY-FH(PHYsical-Frequency Hopping) and MAC-FH(Media Access Control-Frequency Hopping) by using one channel hopping sequence. CONSTITUTION: A setting unit(810) sets a channel hopping offset value and a channel hopping sequence. The time slot allocation unit(820) allocates a time slot. A time slot and frame division unit(830) divides the time slot into a plurality of sub-slots. The time slot and frame division unit divides a data frame into a plurality of sub-frames. A channel selection unit(840) selects a channel for transmitting the plurality of the sub-frames to the plurality of the sub-slots by using the index of the sub-slot transmitting the sub-frame, the index of the time slot, the channel hopping offset value, and the channel hopping sequence. [Reference numerals] (810) Setting unit; (820) Time slot allocation unit; (830) Time slot and frame division unit; (840) Channel selection unit;
Abstract:
PURPOSE: An apparatus for managing a controlling node, a method for the same, a growing environment sensor network system using the same are provided to reduce the overhead of a data frame by managing data for the controlling node at a separate server. CONSTITUTION: A data analyzing part(31) analyzes data collected from a sensor node. The data analyzing part selects a controlling node containing a controlling device to be controlled. A server accessing part(32) communicates with a managing server(50) saving and managing metadata. A metadata acquiring part(33) acquires the metadata related to the controlling device contained in the selected controlling node.
Abstract:
PURPOSE: An apparatus and a method for wake-up signal communication are provided to activate an RF(Radio Frequency) reception unit for a certain cycle in order to confirm whether or not the received signal is a wakeup signal. CONSTITUTION: An RF reception unit(310) receives a wireless signal through an antenna, and an SFD(Start of Frame Delimiter) detection unit(320) activates the RF reception unit for time shorter than the cycle according to a pre-defined search period. The SFD detection unit detects an SFD which indicates that the received wireless signal is a wakeup signal. If the SFD is detected, a wakeup signal detection unit(330) detects the wakeup signal by continuously activating the RF reception unit.
Abstract:
본 발명은 무선 센서 노드 간의 무선 채널을 통해 전력을 충전하는 장치 및 방법에 관한 것으로, 본 발명의 일실시 예에 따른 센서 네트워크에서 종속 센서 노드가 내부 배터리를 충전하는 방법은, 주 센서 노드와의 스캔 절차에서 시간당 충전 가능 전력량을 예측하는 과정; 상기 주 센서 노드의 존재를 인지한 후 상기 주 센서 노드로의 결합을 요청하는 결합 요청 메시지를 통해 상기 예측한 시간당 충전 가능 전력량을 전송하는 과정; 내부 배터리의 전력 레벨이 충전이 요구되는 상황이면, 상기 주 센서 노드로 충전을 요청하여 무선 충전을 수행하는 과정; 상기 무선 충전이 수행되는 동안 소정 주기에 의해 상기 무선 충전에 의해 변화되는 상기 내부 배터리의 전력 레벨을 상기 주 센서 노드로 보고하는 과정; 및 상기 주 센서 노드로 보고된 전력 레벨이 미리 결정된 전력 레벨에 도달할 시에 상기 무선 충전을 중단하는 과정을 포함한다. 상술한 바와 같이 본 발명은, 무선 채널을 통해 전력을 지속적으로 충전하여 센서 노드의 수명을 연장시킬 수가 있다. 무선 센서 네트워크, 센서 노드, 배터리, 충전
Abstract:
A storage unit of a gateway makes an ID of a communications node correspond to an IPv6 address and stores the ID and the IPv6 address when data are received from the communications node. A communications protocol conversion controller of the gateway converts IPv6 data having collection information received from the communications node into IPv4 data having an IPv4 address of the gateway and an IPv4 address of a collection server as a source address and a destination address, respectively, and converts an IPv4 command message received from the collection server into an IPv6 command message having an IPv6 address of the gate way and an IPv6 address of the communications node as a source address and a destination address, respectively, based on an ID of the communications node.
Abstract:
본 발명은 웨이크업 모듈을 구비한 센서 노드, 웨이크업 시퀀스 제어 장치 및 방법에 대하여 개시한다. 본 발명의 일면에 따른 웨이크업 모듈을 구비한 센서 노드는, 비컨 프레임이 송신되거나 수신되면 상기 비컨 프레임의 정보를 확인하여 레지스터를 설정한 후 슬립 모드로 전환하며, 인터럽트를 입력받으면 상기 슬립 모드에서 액티브 모드로 전환하는 MCU; 및 상기 레지스터의 설정시에 카운터 값을 증가시키며, 상기 카운터 값과 상기 비컨 프레임으로부터 확인된 BI(Beacon Interval) 값의 비교결과에 따라 상기 인터럽트를 출력하는 웨이크업 모듈을 포함하는 것을 특징으로 한다. 웨이크업 시퀀스, 센서 노드, 웨이크업 모듈, wake-up, Beacon Frame
Abstract:
PURPOSE: A complex communication apparatus and method thereof are provided to sense adjacent information by sensing adjacent materials and by using a physical channel as a signaling channel. CONSTITUTION: A WPAN(Wireless Personal Area Network) communication unit(108) transmits and receives packets through a physical channel of a WPAN. A two ways radio communication unit(109) transmits and receives voice information through the established voice channel. In case the voice communication is stared, a control unit(107) establishes a voice channel for voice communication. The control unit displays destination identifier and the voice channel information at signaling packets. The control unit broadcasts the signaling packets through the WPAN communication unit.