Abstract: A food management system includes a computing apparatus, and a refrigerator including a storage chamber and configured to transmit an image of the storage chamber to the computing apparatus. The computing apparatus may include a communication device; and a processing device configured to identify a food from an image received from the refrigerator through the communication device and to transmit information related to the food identified by the refrigerator through the communication device. The processing device may identify the food using different processes from different images.

Abstract: A robot cleaner is provided. The robot cleaner includes a battery, and a processor configured to, in response to the battery being consumed in accordance with a cleaning operation for the cleaning area and a remaining capacity of the battery reaching a predetermined value, control the robot cleaner to charge some of the battery and clean a remaining area using the charged battery.

Abstract: Disclosed herein is a food management system, a computing apparatus, and a refrigerator capable of dealing with frequent changes in a state of food stored in the refrigerator by tracking a state change of food in the refrigerator, without manual inputs from a user, and capable of expanding a service associated with food management, such as food purchase and capable of improving user convenience and accuracy of food management.

Abstract: A cleaning robot includes a user interface to display a map image including one or more divided regions, and the user interface displays an icon corresponding to a state value of a main device on the map image.

Abstract: A portable facility failure diagnosis device using detection of radiation ultrasonic waves, comprising: an ultrasonic sensor array; a data acquisition board (DAQ board) in which an electronic circuit for acquiring ultrasonic signals at a sampling frequency of the ultrasonic signals sensed by the ultrasonic sensor array is mounted on a substrate of the data acquisition board (DAQ board); a main board in which an operation processing device that processes the ultrasonic signals received from the DAQ board is mounted on the substrate and the processed ultrasonic sound source information to a display device; a data storage medium storing data processed in the operation processing device of the main board; a display device visually displaying the data processed; and an optical camera picking up an image of a direction.

Abstract: A food management system includes a computing apparatus, and a refrigerator including a storage chamber and configured to transmit an image of the storage chamber to the computing apparatus. The computing apparatus may include a communication device; and a processing device configured to identify a food from an image received from the refrigerator through the communication device and to transmit information related to the food identified by the refrigerator through the communication device. The processing device may identify the food using different processes from different images.

Abstract: A cleaning robot includes a user interface to display a map image including one or more divided regions, and the user interface displays an icon corresponding to a state value of a main device on the map image.

Abstract: A cleaning robot is provided. The cleaning robot includes a sensor configured to sense obstacle information, and a controller configured to generate a map based on sensed values obtained by the sensor, analyze a structure of the generated map by detecting a region segmentation point from the map, and generate a map image based on an analysis result.

Abstract: A cleaning robot includes a user interface to display a map image including one or more divided regions, and the user interface displays an icon corresponding to a state value of a main device on the map image.

Abstract: A portable facility failure diagnosis device using detection of radiation ultrasonic waves, comprising: an ultrasonic sensor array; a data acquisition board (DAQ board) in which an electronic circuit for acquiring ultrasonic signals at a sampling frequency of the ultrasonic signals sensed by the ultrasonic sensor array is mounted on a substrate of the data acquisition board (DAQ board); a main board in which an operation processing device that processes the ultrasonic signals received from the DAQ board is mounted on the substrate and the processed ultrasonic sound source information to a display device; a data storage medium storing data processed in the operation processing device of the main board; a display device visually displaying the data processed; and an optical camera picking up an image of a direction.

Abstract: A radiation ultrasonic wave visualization method in which an ultrasonic wave radiated by a sound source is visualized, comprises: heterodyne-converting ultrasonic signals in a band of at least 20 KHz or more, which are acquired by an ultrasonic sensor array constituted by a plurality of ultrasonic sensors and converting the ultrasonic signals into a low-frequency signal and thereafter, beamforming the converted low-frequency signals or beamforming the converted low-frequency signals based on resampling signals, thereby handling the low-frequency signals without distorting ultrasonic sound location information to reduce a data handling amount in the beamforming step.

Abstract: A robot cleaner is provided. The robot cleaner includes a battery, and a processor configured to, in response to the battery being consumed in accordance with a cleaning operation for the cleaning area and a remaining capacity of the battery reaching a predetermined value, control the robot cleaner to charge some of the battery and clean a remaining area using the charged battery.

Abstract: A cleaning robot is provided. The cleaning robot includes a sensor configured to sense obstacle information, and a controller configured to generate a map based on sensed values obtained by the sensor, analyze a structure of the generated map by detecting a region segmentation point from the map, and generate a map image based on an analysis result.

Abstract: Disclosed are a home appliance and a control method for the same. The home appliance includes an operation unit that receives a control command, a sensor unit that detects a status of the home appliance, a control unit that outputs a control signal so that the home appliance is operated according to the control command, and a driving unit that is operated according to the control signal. Here, the control unit manages a usage log by accumulating and recording at least one of information of an input of the control command and information of the status of the home appliance.

Abstract: A solar battery is partially attached to each blade of a blind. The position of each blade is adjusted based on position information such that each blade tracks sunlight. Electric energy obtained by the generation of electricity using an indoor illumination source is used to charge a battery. In addition to the generation of electricity, some of the blades are folded to let in light.

Abstract: Disclosed is an air conditioner, in which, when a temperature sensor is rotated, the rotating speed of the temperature sensor is increased or the temperature sensing cycle is elongated in a rotating section where an object does not exist rather than in a rotating section where the object exists. Further, the rotating speed of the temperature sensor is increased or the temperature sensing cycle is elongated if the object is located at a short distance from the air conditioner rather than if the object is located at a normal distance from the air conditioner, and the rotating speed of the temperature sensor is decreased or the temperature sensing cycle is shortened if the object is located at a long distance from the air conditioner rather than if the object is located at a normal distance from the air conditioner.

Abstract: Disclosed herein are a refrigerator and a defrost control method thereof that are capable of sensing an amount of frost formed on an evaporator based on a change amount of absolute humidity in the refrigerator to control a defrost operation. A defrost control method of a refrigerator including a storage chamber and an evaporator to cool the storage chamber, includes sensing absolute humidity in the storage chamber, determining an estimated amount of frost formed on the evaporator using time segments in which the absolute humidity in the storage chamber decreases, and controlling a defrost operation based on the estimated amount of frost. According to the present embodiments, it is possible to perform the defrost operation at the point of time for optimum defrost, thereby maximizing energy efficiency and cooling efficiency.

Abstract: Disclosed herein is a photovoltaic-thermal hybrid apparatus. The photovoltaic-thermal hybrid apparatus includes a plurality of photovoltaic-thermal modules. Each photovoltaic-thermal module includes at least one condenser, a solar cell disposed at at least one side of the condenser, a frame to surround the condenser and the solar cell, and a channel disposed in the frame to cool the solar cell. The photovoltaic-thermal modules are arranged adjacent to one another, and the channel of each photovoltaic-thermal module is connected to the channel of at least one neighboring photovoltaic-thermal module.

Abstract: A solar battery is partially attached to each blade of a blind. The position of each blade is adjusted based on position information such that each blade tracks sunlight. Electric energy obtained by the generation of electricity using an indoor illumination source is used to charge a battery. In addition to the generation of electricity, some of the blades are folded to let in light.

Abstract: Disclosed herein is a photovoltaic-thermal hybrid apparatus. The photovoltaic-thermal hybrid apparatus includes at least one condenser to change a direction of some incident solar energy therein in a radial direction and emit some incident solar energy outside, a solar cell disposed at least one side of the condenser, and a frame to surround the condenser, the frame having a cooling channel to cool the solar cell disposed at at least one side therein.