Abstract: An antenna apparatus includes: a parabolic reflector; a dielectric support pedestal; a sub-reflector connected to an upper part of the dielectric support pedestal; and a waveguide connected to a lower part of the dielectric support pedestal, wherein the parabolic reflector has a curved surface in which a ratio of a focal length to a diameter is greater than a preset value, and at least one corrugation configured to suppress a cross polarization is formed in a region of the dielectric support pedestal.

Abstract: A battery pack fire extinguishing system includes: a compressor configured to compress a refrigerant; a condenser connected to the compressor through a first conduit and configured to condense the refrigerant; an evaporator connected to the condenser through a second conduit and connected to the compressor through a third conduit, the evaporator being configured to absorb ambient heat; a battery cell on the evaporator; and a refrigerant injector connected to the second conduit, above the battery cell, and configured to melt when vent gas is discharged from a vent hole in the battery cell to inject the refrigerant into the battery cell.

Abstract: There is provided a semiconductor device capable of improving the performance and/or reliability of the element, by increasing the capacitance of the capacitor, using a capacitor dielectric film including a ferroelectric material and a paraelectric material. The semiconductor device includes first and second electrodes disposed to be spaced apart from each other, and a capacitor dielectric film disposed between the first electrode and the second electrode and including a first dielectric film and a second dielectric film. The first dielectric film includes one of a first monometal oxide film and a first bimetal oxide film, the first dielectric film has an orthorhombic crystal system, the second dielectric film includes a paraelectric material, and a dielectric constant of the capacitor dielectric film is greater than a dielectric constant of the second dielectric film.

Abstract: There is provided a suspension arm for a vehicle used in a suspension device of a vehicle. The suspension arm may include: a body portion constituting a basic body of the suspension arm; and a plurality of mounting portions configured to connect the suspension arm to a wheel-side member or a vehicle-body-side member. At least one of the plurality of mounting portions may be configured to include a bushing coupling portion and a fastening portion formed to extend from the bushing coupling portion to one side, such that the fastening portion may be coupled to a coupling portion provided on one side of the body portion in surface-contact with state.

Abstract: Disclosed are an autonomously traveling mobile robot and a traveling control method thereof, which can control the traveling of the mobile robot according to a first traveling mode in which the mobile robot travels by following obstacles located around the mobile robot or a second traveling mode in which the mobile robot travels in consideration of a positional relation with an existing traveling trajectory through which the mobile robot has already traveled, and generate candidate spots where the mobile robot can travel while the mobile robot travels along the traveling trajectory to implement a spiral cleaning pattern.

Abstract: A display device includes an organic light emitting diode, a first transistor driving the organic light emitting diode, a second transistor transmitting a data signal to the first transistor, a third transistor transmitting a first power voltage to the first transistor, wherein a semiconductor pattern of the first transistor is disposed over a semiconductor pattern of the second transistor, a semiconductor pattern of the third transistor is disposed over the semiconductor pattern of the first transistor, a lower transistor insulating film is disposed between the semiconductor pattern of the first transistor and the semiconductor pattern of the second transistor, and an upper transistor insulating film is disposed between the semiconductor pattern of the first transistor and the semiconductor pattern of the third transistor.

Abstract: A system and a method for sensing hydrogen charge state of a fuel cell electric vehicle are provided. The system includes an infrared transmission unit that transmits a fuel door sensing infrared signal for sensing a fuel door opened while charging hydrogen and a nozzle sensing infrared signal for sensing a charging station-side hydrogen charging nozzle connected to a hydrogen charging inlet of a vehicle. An infrared reception unit receives the fuel door sensing infrared signal and thereafter, reflected on a fuel door and the nozzle sensing infrared signal transmitted from the infrared transmission unit and thereafter, reflected on the hydrogen charging nozzle. A controller determines that the vehicle is being charged with hydrogen when sensing an open state of the fuel door and a hydrogen charging inlet connection state of the hydrogen charging nozzle.

Abstract: The present disclosure provides a thermal-activated pressure relief device of a fuel cell vehicle, the thermal-activated pressure relief device including: a hollow body mounted at an outlet of a hydrogen tank; a hydrogen discharge block having a plurality of first hydrogen discharge holes and mounted and fixed in an upper portion of the hollow body; a hydrogen discharge pipe having a plurality of second hydrogen discharge holes and connected to a bottom of the hydrogen discharge block; a piston fitted on an outer side of the hydrogen discharge pipe to be able to move up and down and to open and close the second hydrogen discharge holes; a stopper mounted in a lower portion of the hollow body and limiting a downward movement distance of the piston; and a melting alloy disposed between the piston and the stopper and melting at a predetermined temperature or more.

Abstract: A high-pressure composite container having a gastight nozzle structure includes a metal nozzle formed at a side of an inlet of a plastic liner layer that defines an inner layer of the high-pressure composite container; a nozzle insert which is inserted into and attached to the metal nozzle in a direction from an inner side of the plastic liner layer to an outer side of the plastic liner layer; and a nut member fixed to an upper end portion of the nozzle insert.

Abstract: A system and a method for sensing hydrogen charge state of a fuel cell electric vehicle are provided. The system includes an infrared transmission unit that transmits a fuel door sensing infrared signal for sensing a fuel door opened while charging hydrogen and a nozzle sensing infrared signal for sensing a charging station-side hydrogen charging nozzle connected to a hydrogen charging inlet of a vehicle. An infrared reception unit receives the fuel door sensing infrared signal and thereafter, reflected on a fuel door and the nozzle sensing infrared signal transmitted from the infrared transmission unit and thereafter, reflected on the hydrogen charging nozzle. A controller determines that the vehicle is being charged with hydrogen when sensing an open state of the fuel door and a hydrogen charging inlet connection state of the hydrogen charging nozzle.

Abstract: An apparatus for monitoring an interior of a process chamber including a process chamber including a chamber body and a view port defined in the chamber body, a cover section including a pinhole in one end, the cover section disposed to correspond to an end portion of the view port, the cover section having a first length in a direction toward a center point of the process chamber, and a sensing unit inserted into the view port to monitor the interior of the process chamber through the pinhole, a region in the process chamber to be sensed by the sensing unit determined based on the first length may be provided.

Abstract: A system and a method for sensing hydrogen charge state of a fuel cell electric vehicle are provided. The system includes an infrared transmission unit that transmits a fuel door sensing infrared signal for sensing a fuel door opened while charging hydrogen and a nozzle sensing infrared signal for sensing a charging station-side hydrogen charging nozzle connected to a hydrogen charging inlet of a vehicle. An infrared reception unit receives the fuel door sensing infrared signal and thereafter, reflected on a fuel door and the nozzle sensing infrared signal transmitted from the infrared transmission unit and thereafter, reflected on the hydrogen charging nozzle. A controller determines that the vehicle is being charged with hydrogen when sensing an open state of the fuel door and a hydrogen charging inlet connection state of the hydrogen charging nozzle.

Abstract: The present disclosure provides a thermal-activated pressure relief device of a fuel cell vehicle, the thermal-activated pressure relief device including: a hollow body mounted at an outlet of a hydrogen tank; a hydrogen discharge block having a plurality of first hydrogen discharge holes and mounted and fixed in an upper portion of the hollow body; a hydrogen discharge pipe having a plurality of second hydrogen discharge holes and connected to a bottom of the hydrogen discharge block; a piston fitted on an outer side of the hydrogen discharge pipe to be able to move up and down and to open and close the second hydrogen discharge holes; a stopper mounted in a lower portion of the hollow body and limiting a downward movement distance of the piston; and a melting alloy disposed between the piston and the stopper and melting at a predetermined temperature or more.

Abstract: The present disclosure relates to a pressure vessel equipped with a permeated gas discharging structure, the pressure vessel including a nozzle boss into and from which a gas flows and is discharged; a liner coupled to a flange portion of the nozzle boss and provided with a space formed therein for receiving fluid; a discharge path forming part configured to form a gas discharging path from the nozzle boss side along an outer surface of the liner in a central axial direction; and a composite material provided at outer sides of the liner and the discharge path forming part.

Abstract: Disclosed herein are a microwave probe capable of precisely detecting a plasma state in a plasma process, a plasma monitoring system including the probe, and a method of fabricating a semiconductor device using the system. The microwave probe includes a body extending in one direction and a head which is connected to one end of the body and has a flat plate shape. In addition, in the plasma process, the microwave probe is non-invasively coupled to a chamber such that a surface of the head contacts an outer surface of a viewport of the chamber, and the microwave probe applies a microwave into the chamber through the head and receives signals generated inside the chamber through the head.

Abstract: A solenoid valve includes: an independently movable pilot plunger head; a main seat including a hole, so that gas flows into the solenoid valve through the hole of the main seat; a main plunger being in contact with the main seat; a pilot plunger disposed at top surface of the main plunger inside the solenoid valve, and including a hollow portion inside the pilot plunger; and a pilot plunger head disposed at one side inside the pilot plunger, and having an apex being in contact with the main plunger. The pilot plunger is movable inside the valve, the pilot plunger head is movable inside the hollow portion of the pilot plunger, and the pilot plunger head and the pilot plunger separately move from each other.

Abstract: The present disclosure relates to a pressure vessel equipped with a permeated gas discharging structure, the pressure vessel including a nozzle boss into and from which a gas flows and is discharged; a liner coupled to a flange portion of the nozzle boss and provided with a space formed therein for receiving fluid; a discharge path forming part configured to form a gas discharging path from the nozzle boss side along an outer surface of the liner in a central axial direction; and a composite material provided at outer sides of the liner and the discharge path forming part

Abstract: An apparatus for monitoring an interior of a process chamber including a process chamber including a chamber body and a view port defined in the chamber body, a cover section including a pinhole in one end, the cover section disposed to correspond to an end portion of the view port, the cover section having a first length in a direction toward a center point of the process chamber, and a sensing unit inserted into the view port to monitor the interior of the process chamber through the pinhole, a region in the process chamber to be sensed by the sensing unit determined based on the first length may be provided.

Abstract: A pressure vessel for storing high-pressure gas has a structure including: a nozzle body which is coupled to a vessel body that defines an inner wall surface of the pressure vessel, and has an inner flow path through which gas flows inside and outside of the pressure vessel; and a locker which is fastened to a lower portion of the nozzle body, and the structure is configured to provide dual sealing including sealing at an inclined surface by fastening force of the locker generated by an inclined pressing end of the locker, and sealing in the locker by sealing members.

Abstract: A system and a method for sensing hydrogen charge state of a fuel cell electric vehicle are provided. The system includes an infrared transmission unit that transmits a fuel door sensing infrared signal for sensing a fuel door opened while charging hydrogen and a nozzle sensing infrared signal for sensing a charging station-side hydrogen charging nozzle connected to a hydrogen charging inlet of a vehicle. An infrared reception unit receives the fuel door sensing infrared signal and thereafter, reflected on a fuel door and the nozzle sensing infrared signal transmitted from the infrared transmission unit and thereafter, reflected on the hydrogen charging nozzle. A controller determines that the vehicle is being charged with hydrogen when sensing an open state of the fuel door and a hydrogen charging inlet connection state of the hydrogen charging nozzle.