Abstract:
PURPOSE: A sensor network system and a networking method thereof are provided to block loss of sensing data while sensing a sensor node in order to accurately sense environment data. CONSTITUTION: A collecting unit(120) broadcasts a sensing command. Sensor nodes receive the sensing command from the collecting unit. The sensor nodes perform sensing operation. The sensor nodes in a first section transmit sensing data to the collecting unit. The sensor nodes in a second section transmit sensing data to the collecting unit.
Abstract:
PURPOSE: A wireless power monitoring receptacle and a power control method thereof are provided to prevent malfunction of a receptacle through automatic battery charge control and power consumption control according to the residual power of battery. CONSTITUTION: An AC input unit(110) receives AC power source from a connected receptacle. A relay switch(120) switches the electrical contact between the AC input unit and an AC output unit(130) and a charge unit(140). The AC output unit outputs the AC power source applied from the AC input unit through the relay switch to a connected electronic device. The charge unit charges a battery(150) with the AC power source applied through the relay switch from the AC input unit. The battery supplies power to a wireless communication module(160) which is connected to an external control system, a control unit which measures applied power to obtain the power consumption of the electronic device, and a display unit(170).
Abstract:
PURPOSE: An electronic paper terminal for inserting ductile material for the top of an electronic paper glass plate is provided to prevent an electronic paper terminal from being bent by forming an external protection frame in a metal material. CONSTITUTION: An electronic paper terminal includes an electronic paper display(110), a softness material layer, and a metal protection frame(120). The electronic paper display includes a glass substrate. The metal protection frame is located in the upper side of the glass substrates. A glass substrate groove is formed in the lower side of the metal protection frame. The softness material layer is formed between the glass substrates and the metal protection frame.