Abstract:
The present invention relates to a method for managing a location of operating device in a plant factory and an apparatus thereof. The method for managing a location of operating devices in a plant factory includes registering, in a sensor network, a plurality of operating devices and sensors installed at a plant factory; generating sensor IDs of the operating devices and sensors registered in the sensor network; and registering location information of the operating devices and the sensors based on the generated sensor IDs.
Abstract:
PURPOSE: A wireless sensor network system and a communication method of the same are provided to effectively respond abnormal situations by co-existing a zigbee-based wireless sensor network and a wireless local area network(LAN) system. CONSTITUTION: Sensor networks(11, 12, 13) include a plurality of sensor nodes. Local servers(21, 22, 23) function as gateways between the sensor networks and a backbone network and transmit data. The overlaying managing parts of the local servers generate wireless LAN overlay networks. Data transmitted from the sensor nodes are processed based on the wireless LAN overlay networks. A data processing process includes the following: the sensor nodes receive a response message containing an address allocated from a wireless LAN system; and the sensor nodes transmit and receive data through wireless LAN overlay network.
Abstract:
PURPOSE: A sensor node including a general-purpose interface port with a plug and play, sensor board including a general-purpose interface port with a sensor device driver, general-purpose interface port and each method thereof are provided to enable a control unit to automatically recognize and control a sensor unit through a universal interface port. CONSTITUTION: A universal interface port(240) offers an interface with a sensor board. The universal interface port downloads a sensor device driver from a connected sensor board. A controller(210) controls the sensor board by using the downloaded sensor device driver. The controller processes sensing data which is generated by a senor included in the sensor board. The universal interface port download a sensor device driver which is related with at least one among SPI(Serial Peripheral Interface), I2C(Inter-Integrated Circuit), ADC(Analog to Digital Converter), Interrupt, and frequency.
Abstract:
본 발명은 USN 프로토콜을 분석하는 장치에 관한 것으로, 적어도 하나 이상의 채널을 통해 USN의 센서 노드들간의 통신되는 패킷을 수집하는 패킷 분석부; 및 USN 프로토콜에 따라 정의된 XML 스키마를 이용하여 상기 수집된 패킷을 처리하여 표시하는 프로토콜 분석부를 포함함으로서, 여러 개의 채널을 통해 수집한 패킷을 디코딩 및 인코딩하여 출력할 수 있다.
Abstract:
본 발명은 USN(Ubiquitous Sensor Network) 기반의 MAC에서 다중채널 액세스를 제어하는 장치 및 방법에 관한 것이다. 이를 위해 본 발명의 다중채널액세스제어장치는 송신센서노드에서 데이터채널 중 가용할 수 있는 적어도 하나 이상의 가용채널을 검색하는 채널검색부; 송신센서노드는 컨트롤채널센싱 및 백오프를 통해 상기 컨트롤채널을 선점한 후 프리앰블을 컨트롤 채널에 주기적으로 방송하는 컨트롤채널선점부;및 수신센서노드는 수신한 프리앰블을 기초로 송신센서노드가 가용할 수 있는 가용채널을 파악하고 그 중 수신센서노드에서 가용할 수 있는 채널을 선택하여 그 정보를 송신센서노드에 전송하는 가용채널교환부;를 포함한다. 채널검색, 채널 협상
Abstract:
A method for extending an operation time of a wireless sensor network is provided to lengthen an operation time of an overall sensor network system for the same power. A preliminary value of a BI(Beacon Interval) is calculated(S501) and compared with a maximum BI(S502). If the preliminary value of the BI is smaller than the maximum BI, a new BI is calculated by adding a value obtained by multiplying a weight value to the maximum BI(S503). In order to inform other nodes about the calculated new BI through a packet, a reserved field of a super-frame specification field is set as 1. If the preliminary value of the BI is larger than the maximum BI, the preliminary value of the BI is used as a new BI(S504).
Abstract:
A device and a method for managing a buffer and processing a received interrupt between a MAC hardware and software processor are provided to lower complexity for buffer management for the received interrupt continuously generated between the MAC hardware and software processor, and reduce loss such as disuse of a received frame. An address decoder(110) decodes/connects an internal hardware address of the MAC software processor(20) to a block when a hardware interrupt is generated by receiving the frame. An interrupt state register(140) forms and provides a bit map by a frame storing state of each buffer(160). An interrupt access register(130) provides the MAC hardware processor(10) with the information for controlling access to the MAC hardware processor when the interrupt state register is updated. A frame length register(120) forms the bitmap by using length information of the frame stored in each buffer and provides the bitmap when the MAC software processor reads the frame. A hardware interrupt controller(150) stores the frame to the empty buffer based on the information received from the interrupt state register.
Abstract:
PURPOSE: A method for collecting area charge on the Internet and a method for authenticating a user therefor are provided to realize regionally dispersed charge collecting. CONSTITUTION: An Internet connected user requests an Internet contents provider to a charge collecting device, MF router(S1). The charge collecting device searches for user data through a temporary user data table(S2). If the user data does not exist, the charge collecting device searches for user data at an authentication/billing server(S4-S5). If the user data do not exist, the charge collecting device sends guide information and a register form to a user(S7). The user registers user's data at the authentication/billing server and the temporary user data table(S8). The user receives a response to the registration and uses wanted information(S9-S11).