Abstract:
본 발명은 선로 작업자 에게 열차와의 거리와 예상 도착 시간을 알려 열차 사고를 방지할 수 있는 열차 진입 알림 장치 및 그 방법에 관한 것이다. 본 발명의 열차 진입 알림 장치는, 열차에 장착되고, 열차의 위치 정보를 포함한 신호를 송신하는 제1 단말기; 및 선로 작업자가 휴대하고, 제1 단말기로부터 신호가 수신되면 현재 본체의 위치를 파악하고, 제1 단말기로부터 수신된 열차의 위치 정보와 파악된 현재 위치를 이용하여 상기 열차와의 거리 및 상기 열차의 도착 예상 시간을 계산하고, 계산된 거리 및 도착 예상 시간을 선로 작업자에게 알리는 제2 단말기를 구비한다.
Abstract:
PURPOSE: A greenhouse crop cultivation control system and method are provided to increase outgrow and yields of crop by providing light of proper wavelength according to the type and growth level of crops. CONSTITUTION: A crop cultivation control system is installed on the exterior wall of greenhouse(10) corresponding to multiple areas of crop cultivation, and comprises multiple solar cell modules(100_1,100_2,100_3,100_4,100_5) providing different wavelengths of light to each areas, and a crop cultivation control unit(200) deciding the transportation of the crop to the area of light of wavelength according to the type and growth level of the crop. The crop cultivation control unit comprises the crop determination unit which determining the type of the crop, the growth status collecting unit which determining the current growth level of the crop, the wavelength determination unit which determining the optimum wavelength necessary for the crop from the growth level, and the crop transportation determination unit which determining the transportation of crop compared with the wavelength of area where crop is cultivated and the optimum absorbed wavelength. The crop cultivation control unit comprises the extra growth region determination unit which determining the cultivation region of the crop. The wavelength determination unit determines the optimum absorbed wavelength based on the cultivation region of the crop. The crop cultivation control unit comprises the extra database which saves the maximum absorbed wavelength according to the growth level of crop, the cultivation region of the crop, and the type of the crop. The wavelength determination unit determines the optimum absorbed wavelength with reference to the database. The greenhouse is divided into multiple regions(A1,A2,A3,A4,A5), and the information of each cultivated crops of the regions are installed on each of multiple regions with multiple RFID tags. [Reference numerals] (200) Crop cultivation control unit
Abstract:
PURPOSE: An RF communication device and a method thereof are provided to perform normal communication although an RF communication chip has trouble or RF communication environment become worse among RF communication execution in a sensor network. CONSTITUTION: The first RF communication unit(210) transceives a signal with an external RF terminal by using the first frequency. A plurality of second RF communication units(250) transceives a signal with the external RF terminal by using the different frequency except the first frequency. A transmission port of a controller(100) is connected to the first RF communication unit and a plurality of second RF communication units. A reception port of the controller comprises the first UART(Universal Asynchronous Receiver Transmitter) port which is corresponded and connected to the first RF communication unit. The reception port of the controller comprises the second UART port which is corresponded and connected to a plurality of second RF communication units.
Abstract:
PURPOSE: A device and a method for guiding a route of an emergent vehicle using telematics are provided to enable a vehicle to arrive in a destination in a short time by providing an optimum route based on up-to-date traffic information. CONSTITUTION: A device for guiding a route of an emergent vehicle using telematics comprises a command unit(100), a vehicle telematics(200), and a traffic signal controller(300). The command unit transmits destination information to an emergent vehicle when necessary. The vehicle telematics is attached on the emergent vehicle and provides an optimum route based on the destination information. The traffic signal controller controls the lighting of a traffic signal before the emergent vehicle is approached.
Abstract:
PURPOSE: A method for updating a multi-hop node using a boot-loader, a method for operating agent node and a method for operating a target node thereof are provided to enable a remote manage server to update the software of a target node via an agent node. CONSTITUTION: A management server(100) transmits an update preparing message to a target node(230), wherein the update preparing message is for executing a boot loader(S150). The management server splits the software for updating into at least one image(S180). Unless a reception response message is received from the selected agent node, the management server re-transmits the software image for updating and the control message.
Abstract:
A method for roaming a sensor node in wireless sensor network environment is provided to develop various application services by performing roaming for sensor nodes between adjacent wireless sensor networks. A movable sensor node related to a parent node of a first wireless network obtains an energy value of a selected channel and a link value according to the channel by performing periodically energy sensing scan and active scan works. If the sensor node is transferred to a second wireless sensor network, the sensor node obtains an energy value and a link value of a selected channel by periodically performing energy sensing scan and active scan works. The sensor node compares judges the energy values and the link values before and after transfer. If the energy and link values after transfer are greater than before transfer, the sensor node makes a connection with the parent node of the second wireless sensor network. And the sensor node severs the connection with the parent node of the first wireless sensor network.
Abstract:
PURPOSE: A room lamp operating device and method are provided to prevent drive obstruction by automatically putting out a room lamp or controlling a radiation direction or illumination of the room lamp. CONSTITUTION: A room lamp status distinction unit(110) determines whether a room lamp of a vehicle which is driven is turned on or not. A room lamp manipulation distinction unit(120) determines room lamp operation of the vehicle based on first information related to the vehicle or second information related to the surrounding environment. A room lamp operation unit operates the room lamp. A light-out unit(131) turns off the room lamp. A radiation angle changing unit changes a radiation angle of the room lamp.
Abstract:
PURPOSE: A method and an apparatus for controlling a vehicle within an intersection are provided to control efficiently an idling state of an engine by controlling the ignition of the vehicle on the basis of a signal frequency of a signal light. CONSTITUTION: A signal light information processing unit(232) collects signal information including location coordinates and signal frequencies of signal lights installed at an intersection. A signal light selection unit(233) selects the corresponding signal light among the signal lights considering the location information of the signal lights and the location information of the vehicle within the intersection. A signal light selection unit determines the travelling direction on the basis of the location information of the vehicle within the intersection. A vehicle control unit(235) controls the vehicle on the basis of the signal frequency of the signal light. The vehicle control unit turns the ignition off so as to prevent the idling of the vehicle on the basis of the signal frequency of the signal light.
Abstract:
PURPOSE: A node update system using a virtual patition method and a control method thereof are provided to supply in order to update only a necessary part in a whole implementing image. CONSTITUTION: An update management server(100) transmits an update request signal for implementing an update process. The update management server transmits an implementing image information saved in a variable region of a sensor node(300) to the corresponding sensor node in replying signal receiving. A sink node(200) wirelessly transmits the update request signal or the implementing image information to the corresponding sensor node. The sensor node receives the implementing image information. The sensor node implements the update process of the implementing image based on the implementing image information.