Abstract:
PURPOSE: Illegal petroleum monitoring system and method are provided to measure frequency variation of elastic surface wave and to detect whether a gasoline component injected into a sensor is illegal or not using capillary action of a micro-electro-mechanical system (MEMS) based micro channel. CONSTITUTION: An illegal petroleum detection monitoring system includes a sensor node (100), a gateway (200) and a center (300). The sensor node is installed in one side of a lubricator, judges whether gasoline is illegal petroleum or not by measuring frequency variation of elastic surface wave by injecting gasoline into a capillary of a MEMS based micro channel and generates an alarm message if the gasoline is judged as illegal petroleum. The gateway wirelessly communicates with the sensor node via local area network communication. The center receives an illegal petroleum detection alarm message from the sensor nodes. [Reference numerals] (AA) Common use wireless internet
Abstract:
PURPOSE: A smart safety management operating system is provided to install industry safety smart hardware in protection equipment which a worker has to wear in various industry sites. CONSTITUTION: A first smart clothing wirelessly transmits a safety requirement inputted in a terminal device and sensed situation information. A second smart clothing(400) wirelessly transmits the sensed situation information. A central control center(600) receives information from the first and the second smart clothing through a network module. The central control center estimates a safety condition of a worker in an industry site based on the received information. The central control center transmits a control signal to the corresponding smart clothing according to an estimation result. The central control center provides a technology application service. [Reference numerals] (100) Terminal; (210,410) Sensing unit; (220,420) Camera unit; (230) First communication unit; (240) Second communication unit; (250,440) A/V input and output unit; (260,450) Alarm unit; (430) Communication unit; (460) Display unit; (500) Network module; (510) Collecting device unit; (520) Access point unit; (600) Central control center; (610) Information collecting unit; (620) Monitoring unit; (630) Application service unit; (AA) Smart wear
Abstract:
PURPOSE: An apparatus and a method for measuring snowfall are provided to accurately measure the snowfall based on a light emitting element regardless of weather and time and to omit electric wires for supplying electric power by using solar energy. CONSTITUTION: A system for measuring snowfall includes a controlling center, a snowfall measuring unit, and a wireless access point. The controlling center is connected based on Internet network or mobile radio communication network. The snowfall measuring unit is composed of a measuring part(200B) and an observing part(200A). A light emitting diode is formed at one side of a scale on the measuring part and measures snowfall based on self generated power using solar light. The light emitting diode is turned on/off based on a controlling signal from the controlling center to the snowfall measuring unit. The wireless access point relays signal transmissions between the snowfall measuring unit and the controlling center.
Abstract:
PURPOSE: A rail immersion observing system and a method for controlling the same are provided to improve the accuracy of observation by overcoming problems related to the incorrect measurement of rainfall due to wind. CONSTITUTION: A sensing unit(110) includes at least one of a wind speed sensor(111), a wind amount sensor(112), and a rainfall measuring sensor(113). A sensor node(120) receives the sensing information of the sensing unit based on ubiquitous sensor network. A gateway(130) receives and transfers the sensing information from the sensor node. A rain immersion observing system(140) predicts and controls the risk of rail immersion by measuring accumulated rainfall or rainfall per time based on rainfall measuring data or measuring accumulated rainfall or rainfall per time based on wind speed and wind amount data.
Abstract:
PURPOSE: A system for offering a wired/wireless communication service based on a compression technique is provided to transfer and compress a mobile communication signal and an internet data. CONSTITUTION: A master unit(110) transmits an RF signal transmitted from a mobile terminal through mobile communication network and Internet. A remote unit(170) transmits the RF signal transmitted from the mobile terminal through the mobile network and internet. The remote unit controls the compression of data and the mobile communications signal transmitted from the master unit. The remote unit transmits the compacted mobile communications signal to the mobile communications terminal.
Abstract:
A DPD relay system including a signal processing system which is possible to attach and separate one board and a signal processing method thereof are provided to comprise the signal processing system with the module detached and attached in one board by mounting the signal processing system to the DPD relay system. A signal processing system(100) is comprised of a DSP module mounted on a DPD board, an RVS module and an RCPU module. Three modules are comprised of the DPD board. A digital pre-distortion is performed about I signal and inputted Q signal. The DSP module receives the optical signal from the main hub unit and DPD relay system. The received optical signal is converted into the electric signal. The transformed electric signal is filtered by each channel by using a frequency allocation channel filter. The filtered digital signal is separated according to I signal and Q signal. The RVS module performs the low-noise-amplification about the radio frequency signal received with antenna.
Abstract:
본 발명은 트랜스폰더 전원 공급 장치 및 그 방법에 관한 것으로, 트랜스폰더에 전원을 공급하는 RFID 리더에 주 증폭기와 보조 증폭기, 두 개의 증폭기를 두어 주 증폭기와 보조 증폭기에 디바이더 및 디텍터를 적용하고, 출력의 일부를 궤환하여 디텍터를 통해 상시 주 증폭기의 출력을 감시하며, 감시 중 주 증폭기의 출력에 이상이 발생하면 스위치를 통해 주 증폭기의 동작을 멈추고 보조 증폭기를 통해 트랜스폰더에 전원을 공급하도록 하는 트랜스폰더 전원 공급 장치 및 그 방법에 관한 것이다.