Abstract: An automated gas supply system includes a gas cylinder transfer unit configured to transfer a cradle in which one or more gas cylinders storing a gas therein are stored; a gas cylinder inspection unit configured to check properties of the gas stored in the gas cylinder transferred from the gas cylinder transfer unit and check whether the gas leaks from the gas cylinder; a storage queue configured to receive the gas cylinder from the gas cylinder inspection unit by a mobile robot and configured to classify and store the transferred gas cylinders according to the properties of the gas stored in the gas cylinder; and a gas cabinet configured to receive the gas cylinder from the storage queue by the mobile robot and fasten a gas pipe, which is connected to a semiconductor manufacturing process line, to a gas spray nozzle, which is disposed at one side of the received gas cylinder, to supply the gas stored in the gas cylinder to the semiconductor manufacturing process line, wherein the gas cabinet includes a resid

Abstract: Disclosed herein is an air conditioner. The air conditioner includes a housing having an inlet and an outlet, a blade having a plurality of discharge holes and provided to discharge air through the plurality of discharge holes, a first opening formed between one side of the blade near the inlet and the housing when the blade discharges air through the plurality of discharge holes, and a second opening formed between the housing and the other side opposite to the one side of the blade when the blade discharges air through the plurality of discharge holes.

Abstract: Disclosed is an air conditioner to prevent deterioration of cooling or heating performance caused by re-introduction of cooling or heating air into a heat exchanger. The air conditioner includes a housing including an air discharge plate having a plurality of holes and an outlet, a heat exchanger located inside the housing, a blower fan configured to blow air heat-exchanged with the heat exchanger toward the air discharge plate or the outlet, a blade rotating between a guide position to guide a direction of air blown from the blower fan and discharged through the outlet and a closing position to close the outlet, wherein the blade includes a first blade and a second blade spaced apart from the first blade and configured to guide air blown from the blower fan toward the air discharge plate when the first blade is located at the closing position.

Abstract: Disclosed herein is an air conditioner. The air conditioner includes a housing having an inlet and an outlet, a blade having a plurality of discharge holes and provided to discharge air through the plurality of discharge holes, a first opening formed between one side of the blade near the inlet and the housing when the blade discharges air through the plurality of discharge holes, and a second opening formed between the housing and the other side opposite to the one side of the blade when the blade discharges air through the plurality of discharge holes.

Abstract: Disclosed is an air conditioner to prevent deterioration of cooling or heating performance caused by re-introduction of cooling or heating air into a heat exchanger. The air conditioner includes a housing including an air discharge plate having a plurality of holes and an outlet, a heat exchanger located inside the housing, a blower fan configured to blow air heat-exchanged with the heat exchanger toward the air discharge plate or the outlet, a blade rotating between a guide position to guide a direction of air blown from the blower fan and discharged through the outlet and a closing position to close the outlet, wherein the blade includes a first blade and a second blade spaced apart from the first blade and configured to guide air blown from the blower fan toward the air discharge plate when the first blade is located at the closing position.

Abstract: An easel includes a main frame including a prop in front, a first supporting frame to support the main frame, and a tilting unit. An upper end portion of the first supporting frame is rotatably coupled to the main frame. One end portion of the tilting unit is rotatably coupled to the main frame, the other end portion of the tilting unit is rotatably coupled to the first supporting frame to adjust a tilt angle of the first supporting frame with respect to the main frame and is detachable to be adjustably positioned along a length direction of the first supporting unit. The easel can adjust a tilt angle as desired and reliably maintain an adjusted tilt angle.

Abstract: An easel includes a main frame including a prop in front, a first supporting frame to support the main frame, and a tilting unit. An upper end portion of the first supporting frame is rotatably coupled to the main frame. One end portion of the tilting unit is rotatably coupled to the main frame, the other end portion of the tilting unit is rotatably coupled to the first supporting frame to adjust a tilt angle of the first supporting frame with respect to the main frame and is detachable to be adjustably positioned along a length direction of the first supporting unit. The easel can adjust a tilt angle as desired and reliably maintain an adjusted tilt angle.

Abstract: A phase measurement method in a microwave tomography system may include transmitting a first Tx frequency signal, receiving a signal corresponding to the first Tx frequency signal, and measuring a first phase value; transmitting a second Tx frequency signal separated by a predetermined discrete frequency from the first Tx frequency signal, receiving a signal corresponding to the second Tx frequency signal, and measuring a second phase value; calculating a first phase difference based on a difference between the first and second phase values; calculating a second phase difference based on the discrete frequency; and determining an unwrapped phase value through comparison between the first and second phase differences.

Abstract: According to the exemplary embodiment of the present invention, a microwave tomography apparatus is an apparatus which measures microwave tomograph of a subject which is inserted into a medium container including: a plurality of antennas which is located in the medium container and transmits and receives an electromagnetic wave; a plurality of transceivers which, when a radio wave signal transmitted from one of the plurality of antennas is simultaneously received by the remaining antennas of the plurality of antennas, measures intensity and phase information of the radio wave signal received from the remaining antennas; and a controller which generates an image using the values measured by the plurality of transceivers.

Abstract: A method for reconstructing a dielectric image using electromagnetic waves, comprising: acquiring a measurement value of the electromagnetic waves; generating a matching system matrixes between the meshes; generating a smoothed dyadic Green's function matrix; generating an electromagnetic wave calculation value; calculating a misfit error between the acquired electromagnetic wave measurement value and the generated electromagnetic wave calculation value, and checking whether a change of the calculated misfit error satisfies a predetermined optimization determination condition; updating dielectric parameters at the meshes; and outputting a reconstructed dielectric image in the image reconstruction region.

Abstract: Disclosed is an apparatus and a method for efficiently controlling a temperature, which are capable of minimizing a temperature deviation and decreasing a temperature control time by simultaneously controlling temperatures of matching material used in a microwave imaging system in a main water tank and an auxiliary water tank, and preventing an amplitude and phase information of the microwaves obtained by the microwave imaging system from deteriorating over a lapse of time.

Abstract: The present invention relates to an easel allowing the angle of inclination thereof to be adjusted and reliably maintaining the adjusted angle of inclination, the easel comprising: a main bracket; expandable front supports rotatably attached on both sides of the front of the main bracket; an expandable rear support rotatably attached to the back of the main bracket; a supporting platform, both sides of which are detachably coupled to the front supports; a raising-and-lowering bar attached on the front center of the main bracket so as to allow raising and lowering of same, and the lower end of which is vertically slidably supported by the supporting platform; and a tilting unit, rotatably and expandably coupled in between the rear support and the front support platform, for controlling the angle of inclination of the rear support with respect to the front supports.

Abstract: A sensor includes a tank filled with a matching medium, a metal body configured to surround an image object received in the tank, and a plurality of apertures disposed at constant intervals inside the metal body, wherein when any one of the plurality of apertures radiates microwaves to the image object, remaining apertures receive scattering microwaves from the image object.

Abstract: An apparatus and method of controlling a temperature of a matching material used in an apparatus for generating a tomographic image is disclosed. The method includes measuring a temperature of a matching material in which an object is immersed in an apparatus for measuring a shape of an object, setting a set temperature at which an amplitude and a phase of an electromagnetic wave that passes through the matching material are maintained, based on the measured temperature of the matching material, and controlling the temperature of the matching material to be higher than the set temperature.

Abstract: An apparatus and method of controlling a temperature of a matching material used in an apparatus for generating a tomographic image is disclosed. The method includes measuring a temperature of a matching material in which an object is immersed in an apparatus for measuring a shape of an object, setting a set temperature at which an amplitude and a phase of an electromagnetic wave that passes through the matching material are maintained, based on the measured temperature of the matching material, and controlling the temperature of the matching material to be higher than the set temperature.

Abstract: An apparatus and method for measuring a three-dimensional (3D) shape of an object using a liquid is provided, the method including generating an image by photographing an object immersed in a liquid, extracting a section contour indicating a boundary between the object and a surface of the liquid from the image, and measuring a 3D shape of the object using the extracted section contour.

Abstract: The present invention relates to an easel allowing the angle of inclination thereof to be adjusted and reliably maintaining the adjusted angle of inclination, the easel comprising: a main bracket; expandable front supports rotatably attached on both sides of the front of the main bracket; an expandable rear support rotatably attached to the back of the main bracket; a supporting platform, both sides of which are detachably coupled to the front supports; a raising-and-lowering bar attached on the front center of the main bracket so as to allow raising and lowering of same, and the lower end of which is vertically slidably supported by the supporting platform; and a tilting unit, rotatably and expandably coupled in between the rear support and the front support platform, for controlling the angle of inclination of the rear support with respect to the front supports.

Abstract: A phase measurement method in a microwave tomography system may include: transmitting a first Tx frequency signal, receiving a signal corresponding to the first Tx frequency signal, and measuring a first phase value; transmitting a second Tx frequency signal separated by a predetermined discrete frequency from the first Tx frequency signal, receiving a signal corresponding to the second Tx frequency signal, and measuring a second phase value; calculating a first phase difference based on a difference between the first and second phase values; calculating a second phase difference based on the discrete frequency; and determining an unwrapped phase value through comparison between the first and second phase differences.

Abstract: A method for reconstructing a dielectric image using electromagnetic waves, comprising: acquiring a measurement value of the electromagnetic waves; generating a matching system matrixes between the meshes; generating a smoothed dyadic Green's function matrix; generating an electromagnetic wave calculation value; calculating a misfit error between the acquired electromagnetic wave measurement value and the generated electromagnetic wave calculation value, and checking whether a change of the calculated misfit error satisfies a predetermined optimization determination condition; updating dielectric parameters at the meshes; and outputting a reconstructed dielectric image in the image reconstruction region.

Abstract: A sensor includes a tank filled with a matching medium, a metal body configured to surround an image object received in the tank, and a plurality of apertures disposed at constant intervals inside the metal body, wherein when any one of the plurality of apertures radiates microwaves to the image object, remaining apertures receive scattering microwaves from the image object.