Abstract:
Provided is a routing method for a guard lamp using a short distance wireless communication, the method including: performing, by a neighbor setup guard lamp, a neighbor setup operation; transferring, by the neighbor setup guard lamp, an initialization request message (Init_Request Message) to a neighbor guard lamp and receiving an initialization response message (Init-Rep Message) from the neighbor guard lamp to form a guard lamp network; receiving, by the neighbor setup guard lamp, a data message from the neighbor guard lamp; and repairing a path of the neighbor guard lamp having an error caused by a link loss at the receiving of the data message.
Abstract:
Provided is a plant growth control of an apparatus for controlling a growth rate of a plant growing in a greenhouse having a roof formed of a dye-sensitized panel. In the method, a wavelength of sunlight to pass through the dye-sensitized panel is selected according to external environment information. A wavelength control signal corresponding to the selected wavelength is proved to the dye-sensitized panel.
Abstract:
A voltage-sourced High-Voltage Direct Current (HVDC) apparatus, which converts 3-phase AC voltage from a 3-phase AC power source into high voltage DC through a rectifier including switching elements, is provided. In the apparatus, a rectifier controller receives detected 3-phase currents, apparent power, and active power and generates D and Q-axis signals. A D/Q controller receives the signals and generates active power D-axis signal and apparent power Q-axis signal. A PWM unit generates PWM on/off signals for turning on/off the switching elements based on output signals from the D/Q controller. The D/Q controller includes a rotary converter to convert the D and Q-axis signals into AC signals and D and Q-axis order units coupled thereto, and generates the D and Q-axis signals through the order units. The PWM unit converts the D and Q-axis signals into 3-phase AC signals and compares them with 3-phase triangular waves to generate on/off signals for turning on/off the switching elements.
Abstract translation:提供了一种电压源的高压直流(HVDC)装置,其通过包括开关元件的整流器将来自三相交流电源的三相交流电压转换为高压直流。 在该装置中,整流器控制器接收检测到的三相电流,视在功率和有功功率,并产生D和Q轴信号。 D / Q控制器接收信号并产生有功功率D轴信号和视在功率Q轴信号。 PWM单元基于来自D / Q控制器的输出信号产生用于接通/关断开关元件的PWM导通/截止信号。 D / Q控制器包括旋转转换器,用于将D轴和Q轴信号转换为与其相连的AC信号和D轴和Q轴顺序单元,并通过订单单位产生D轴和Q轴信号。 PWM单元将D和Q轴信号转换成三相交流信号,并将其与三相三角波进行比较,以产生用于接通/断开开关元件的导通/截止信号。
Abstract:
A terminal main body of a communication terminal is supplied power from a battery pack through a DC signal path. The terminal main body communicates with at least one additional function module providing an additional function through a communication path connected to the DC signal path so as to provide the additional function to a user. Herein, the communication path is an AC signal path. That is, a signal transmitted/received between the terminal main body and the additional function module is an AC signal, and thus, the communication path can be compatible with the DC signal path providing the power. In addition, a plurality of additional function modules can be serially connected in the form of a serial communication bus, and therefore, a user can select a plurality of additional functions.
Abstract:
A vibration-actuated pump is connected to a stirling-cycle refrigerator for absorbing the vibration generated when the stirling refrigerator is operated. The absorbed vibration is converted into a driving power for operating a pump to circulate a heat-transferring medium of a cooling circuit and/or a freezing circuit.