Patent application number | Description | Published |
20100117832 | SYSTEM AND METHOD FOR MANAGING INFORMATION OF LOADING GOODS - Disclosed is an information managing system and method according to goods loading. The information managing system includes a first antenna for identifying a first tag included by transportation means, a second antenna for identifying a second tag included by goods, a reader for generating tag information which is identification results generated by respectively identifying the corresponding tags through the first antenna and the second antenna, and a control device for mapping information of the first tag and information of the second tag based on the tag information. | 05-13-2010 |
20100145761 | SYSTEM AND METHOD FOR ALTERNATIVE SIMULATION OF LOGISTICS INFRASTRUCTURE - A future amount is created through demand estimation by rectifying data administrated in a logistics infrastructure through a system and a method for alternative simulation of a logistics infrastructure. In addition, an infrastructure load by a future year amount is analyzed and an alternative is selected through the load analysis. | 06-10-2010 |
20110035249 | MAIL ACCEPTANCE SYSTEM AND METHOD - A mail acceptance system selects a mail center that is near a client by using mail acceptance information input by the client, calculates transport cost of the selected mail center, selects a mail center that is appropriate for making loads of mail centers equal and minimizing the transport cost as a suitable mail center from among the selected mail centers, and sets a visit and acceptance schedule for visiting and accepting the client's mail. | 02-10-2011 |
20110057038 | ANTENNA, AND RADIO FREQUENCY IDENTIFYING DEVICE AND METHOD - A radio frequency identifying device minimizes a null point area within a radiation pattern by horizontally or vertically vibrating an antenna plate radiating a radio frequency beam by using at least one vibration motor. | 03-10-2011 |
20140172896 | APPARATUS FOR ANALYZING GEOGRAPHIC INFORMATION AND METHOD THEREOF - Disclosed are a geographic information analyzing apparatus and a method thereof, and more specifically, a geographic information analyzing apparatus which is capable of analyzing a region arbitrarily set by a user and a method thereof. The a geographic information analyzing apparatus disclosed in this specification includes a data storing unit which includes a spatial data storing unit which stores geospatial information and an attribute data storing unit which stores attribute information corresponding to the spatial data; a map viewer which provides a user interface and receives spatial information of an arbitrary region from a user, and a function providing unit which compares the geospatial information with the spatial information of the arbitrary region to calculate an overlapping ratio and performs analysis in accordance with a previously set function using attribute information in accordance with the overlapping ratio. | 06-19-2014 |
Patent application number | Description | Published |
20110318193 | LINEAR COMPRESSOR - The present invention discloses a linear compressor which makes it possible to adjust a variable rate of a cooling capacity. The linear compressor includes a fixed member having a compression space therein, a movable member linearly reciprocated in the fixed member to compress a refrigerant sucked into the compression space, one or more springs provided to elastically support the movable member in the motion direction of the movable member, a motor unit including a motor connected to the movable member to linearly reciprocate the movable member in the axial direction and a capacitor connected in series to the motor, and a motor control unit controlling an AC voltage applied to the motor to adjust a variable rate of a cooling capacity by the reciprocation of the movable member. | 12-29-2011 |
20120034104 | LINEAR COMPRESSOR - The present invention discloses a linear compressor which makes it possible to precisely operate a voltage using a current without having a high-capacity capacitor connected in series to a motor. The linear compressor comprises a mechanical unit including a fixed member having a compression space therein, a movable member linearly reciprocated in the fixed member to compress a refrigerant sucked into the compression space, one or more springs provided to elastically support the movable member in the motion direction of the movable member, and a motor connected to the movable member to linearly reciprocate the movable member in the axial direction, and an electric control unit including a rectification unit receiving AC power and outputting a DC voltage, an inverter unit receiving the DC voltage, converting the DC voltage to an AC voltage according to a control signal, and supplying the AC voltage to the motor, a current sensing unit sensing a current flowing between the motor and the inverter unit, an integrator circuit unit integrating a voltage corresponding to the current from the current sensing unit, and a control unit receiving an integrated value from the integrator circuit unit and controlling the AC voltage applied to the motor to permit the reciprocation of the movable member. | 02-09-2012 |
Patent application number | Description | Published |
20120230842 | LINEAR COMPRESSOR - The present invention relates to a linear compressor which can provide greater power by changing a frequency at a high load. The linear compressor comprises a mechanical unit including a fixed member having a compression space therein, a movable member linearly reciprocated in the fixed member to compress a refrigerant sucked into the compression space, one or more springs provided to elastically support the movable member in the motion direction of the movable member, and a motor connected to the movable member to linearly reciprocate the movable member in the axial direction, and an electric control unit including a rectification unit receiving AC power and outputting a DC voltage, an inverter unit receiving the DC voltage, converting the DC voltage to an AC voltage according to a control signal, and supplying the AC voltage to the motor, a voltage sensing unit sensing the DC voltage output from the rectification unit, a current sensing unit sensing a current flowing between the motor and the inverter unit, and a control unit calculating a required voltage of the motor from the current from the current sensing unit, and generating a control signal for changing a frequency of the AC voltage converted by the inverter unit and applying the control signal to the inverter unit, if the required voltage is greater than the DC voltage of the voltage sensing unit. | 09-13-2012 |
20130004335 | LINEAR COMPRESSOR - The present invention relates to a linear compressor which can perform the natural cooling capacity modulation, even if a capacitor connected to a motor is removed. The linear compressor includes a fixed member having a compression space therein, a movable member linearly reciprocated in the fixed member to compress a refrigerant sucked into the compression space, one or more springs provided to elastically support the movable member in the motion direction of the movable member, a motor connected to the movable member to linearly reciprocate the movable member in the axial direction, and a motor control unit performing the cooling capacity modulation by the reciprocation of the movable member according to a load, by controlling an AC voltage applied to the motor so that a stroke of the movable member can be proportional to the magnitude of the AC voltage applied to the motor. | 01-03-2013 |
Patent application number | Description | Published |
20080290831 | FUEL CELL SYSTEM COMPRISING BATTERY AND METHOD OF CONSUMING RESIDUAL FUEL IN THE FUEL CELL SYSTEM - A fuel cell system having a back-up battery and a method of consuming residual fuel in the fuel cell system in which the fuel cell system includes a fuel cell, a system controller, a back-up battery, a converter, a fuel supply control, and a driver to drive the fuel supply control, and a charger disposed between the converter and a load. A power output end of the charger is directly connected to the back-up battery via a switch. The converter includes a first converter connected to the back-up battery and a second converter connected to the fuel cell, and the first and second converters are commonly connected to the charger. | 11-27-2008 |
20080311440 | FUEL CELL SYSTEM AND METHOD OF OPERATING THE SAME - A fuel cell system includes a power unit that generates power using a fuel; a fuel storage unit that stores the fuel; a fuel supply device that conveys the fuel from the fuel storage unit to the power unit; and a control unit that controls the supply of the fuel and the generation of power. The fuel supply device includes a fuel supply control device that controls the supply of fuel according to a signal generated by the control unit. The control unit includes a fuel control unit that generates the signal according to the information of the fuel storage unit and the state information of the power unit. | 12-18-2008 |
20090155654 | HEAT RECOVERY APPARATUS AND FUEL CELL HAVING THE SAME - Provided are a heat recovery apparatus recovering heat generated from a membrane electrode assembly (MEA) and transmitting the heat to a fuel spreader so that a temperature difference between the MEA and the fuel spreader inside a fuel cell is reduced, and a fuel cell having the heat recovery apparatus. The fuel spreader supplies fuel having a uniform concentration to the MEA through the heat recovery apparatus, so that a fuel cell having a reduced total volume, a stable performance, and increased energy efficiency can be provided. | 06-18-2009 |
20090169966 | FUEL DIFFUSION UNIT, FUEL SUPPLY UNIT, AND FUEL CELL SYSTEM INCLUDING THE SAME - A fuel diffusion unit including: a fuel diffusion plate; a diffusion sheet disposed on fuel diffusion plate, to evenly distribute a fuel to the fuel diffusion plate; a primary transportation unit disposed on the diffusion sheet; secondary transportation units connected to the primary transportation unit, to distribute the fuel to the fuel from the primary transportation unit to the diffusion sheet. The diffusion sheet has a wetting direction that allows the fuel to flow in a predetermined direction. The fuel diffusion unit can be included in a fuel supply unit and a fuel cell system. | 07-02-2009 |
20090176140 | FUEL CELL PROVIDING IMPROVED DISPOSING STRUCTURE FOR UNIT CELLS - A fuel cell including a plurality of unit cells that each includes an anode, an electrolyte membrane, and a cathode. The unit cells are stacked together, such that the unit cells form rows and furrows. The fuel cell can further include an anode frame to support an anode side of the fuel cell stack, and a cathode frame to support a cathode side of the fuel cell stack. The fuel cell can include reinforcing members to support either of the frames. | 07-09-2009 |
20100173211 | FUEL CELL SYSTEM AND FUEL CELL POWER MANAGING METHOD - A fuel cell system and a fuel cell power managing method in which the fuel cell system controls a current output of a fuel cell by adjusting a target voltage value of the fuel cell according to a difference between a current value of the fuel cell and a target constant current value. By doing so, the fuel cell system may allow the fuel cell to stably and constantly output a constant current. | 07-08-2010 |
20110217604 | Recycler, water management system of fuel cell comprising the same, fuel cell comprising the water management system, and method of measuring water level - A recycler of a fuel cell includes two electrodes, a rotor interposed between the two electrodes, and an insulating container surrounding and receiving the two electrodes and the rotor. A water management system of the fuel cell includes the recycler, and the fuel cell includes the water management system. A method of measuring a water level in the recycler includes measuring a conductivity of water separated in the recycler is measured. | 09-08-2011 |
20110244351 | OPERATING METHOD OF FUEL CELL SYSTEM - A method of operating a fuel cell includes: generating an electrical power in a fuel cell stack while no fuel is being supplied from a fuel tank; reducing an output voltage of the electrical power toward a target voltage to increase an output current of the electrical power; measuring a rate of increase of the output current; starting supply of fuel to the fuel cell stack when the rate of increase of the output current is below a threshold rate; and controlling a fuel concentration in the fuel cell stack to maintain the output current at a target current level. | 10-06-2011 |
20120013196 | Fuel cell system and power managing method of the same - A fuel cell system, which provides output power of at least one of a fuel cell and a battery to a load, selects any one operating mode from among various operating modes of the fuel cell system based on a change in performance of the battery due to use of the battery, and controls supplying of output power of the fuel cell and output power of the battery to the load according to the selected operating mode. | 01-19-2012 |
20120258385 | METHOD AND APPARATUS FOR MEASURING VOLUME OF LIQUID AND FUEL CELL SYSTEM - The volume of liquid that remains in a liquid storage is calculated by measuring capacitances between several pairs of metal plates attached to each of several corresponding faces of the liquid storage and by combining liquid volumes corresponding to the capacitance based on the current position of the liquid storage. Such a method of measuring the volume of liquid can be used to measure the amount of fuel that remains in a fuel cell system. | 10-11-2012 |
20130059220 | FUEL CELL SYSTEM AND DRIVING METHOD THEREOF - A fuel cell system for supplying power to a load includes: a plurality of fuel cell stacks; a plurality of DC/DC converters coupled to the plurality of fuel cell stacks; and a stack controller for estimating performance of the respective fuel cell stacks according to current amounts of the plurality of fuel cell stacks, and for controlling power converting efficiency of the respective DC/DC converters according to the performance of the fuel cell stacks to control output power generated by the fuel cell stacks. | 03-07-2013 |
Patent application number | Description | Published |
20130089929 | MICRODEVICE FOR FUSING CELLS - A microdevice for fusing cells, the microdevice including: a substrate; a first electrode array including a plurality of first electrodes, and disposed on the substrate; a microwell array including a plurality of microwells formed respectively at locations corresponding to the plurality of first electrodes, and disposed on the first electrode array; a second electrode disposed above the plurality of microwells, and including a microchannel having a predetermined height; inlet and outlet holes mutually spaced apart from the microchannel; and a power supply unit applying voltage to the plurality of first electrodes and the second electrode. Accordingly, a cell trapped in the microwell and a cell disposed on the microwell are aligned in a line between the first and second electrodes, and thus the two cells having different traits are smoothly fused in a one-to-one manner when an electric shock is applied to the two cells. | 04-11-2013 |
20130089930 | MICRODEVICE FOR FUSING CELLS - A microdevice for fusing cells including: a microchannel layer including a main microchannel and a plurality of sub-microchannels branched from one end of the main microchannel; a plurality of first electrodes formed on one side of the main microchannel; a plurality of second electrodes formed on the other side of the main microchannel and each second electrode facing the each of the first electrodes; a thin film disposed on the microchannel layer and covering the main microchannel; an upper cover including an air inflow passage for connecting a top of the thin film and the outside of the microdevice; and a power supply unit for applying voltage to the plurality of first and second electrodes. | 04-11-2013 |
20130089931 | MICRODEVICE FOR FUSING CELLS - A microdevice for fusing cells including: a membrane with a plurality of pores having a diameter smaller than the smallest diameter among the first kind of cells and second kind of cells; a first chamber where the first cell is located and a second chamber where the second cell is located, wherein the membrane is disposed therebetween; a first electrode combined to the first chamber; a second electrode combined to the second chamber; and a power generator applying a voltage to the first and second electrodes. Accordingly, the first and second cells across the membrane may be arranged in a one-to-one manner between the first and second electrodes, and thus the first and second cells having different traits may be smoothly fused in a one-to-one manner when electric signals are sequentially applied thereto. | 04-11-2013 |