摘要:
The present invention relates to an apparatus and method capable of detecting a heartbeat using a photoplethysmography (PPG) even under a motion of a user. A primary object of the present invention is to allow the heartbeat of the user to be effectively detected from a PPG signal even under the motion. The object of the present invention is accomplished by the following process of acquiring the PPG signal from the user through a PPG sensor unit, detecting candidate heartbeat sequences from the PPG signal after calculating an expected mean interbeat interval through a signal processing technique based on the wavelet transformation and an autocorrelation function, and extracting an optimal heartbeat sequence or mean heart rate from the candidate heartbeat sequences.
摘要:
Provided are an air conditioner and a method for controlling the air conditioner. The air conditioner includes an input unit receiving an input air-conditioning temperature for an indoor space, an air-conditioning unit generating a cool or hot wind having the input air-conditioning temperature, and a location detecting unit for detecting a user s location in the indoor space. A direction and temperature of the cool or hot wind generated by the air-conditioning unit are adjusted in accordance with whether a user is detected in the indoor space by the location detecting unit.
摘要:
A ventilation/illumination duct is disclosed which can not only ventilate an indoor space, but also can illuminate the indoor space. A ventilation/illumination system using the ventilation/illumination duct, and a control method for the ventilation/illumination system are also disclosed. The ventilation/illumination system includes a ventilation device for blowing air, a light supplying device for supplying light, a ventilation/illumination duct for not only guiding the air blown by the ventilation device, to ventilate an indoor space, but also totally reflecting the light, to illuminate an indoor space, and a cleaner arranged in the ventilation/illumination duct.
摘要:
Air cleaner including a case having an inlet and an outlet, a fan inside of the case, for drawing air through the inlet and discharging the air through the outlet, a filter assembly inside of the case for cleaning the air drawn into the case through the inlet, a heat exchanger inside of the case for heating or cooling the air drawn into the case, selectively, and a plurality of fins between the fan and the outlet for guiding the air drawn into the case to the outlet, thereby ventilating the room.
摘要:
A heat exchange element of a heat exchanger prevents losses due to internal pressure non-uniformity. The heat exchanger includes a plurality of heat exchange sheets which are stacked together. A plurality of airflow guide ribs located between the sheets have connection passages that allow gases to flow between adjacent ducts. The flow of gasses through the connection passages offsets pressure non-uniformity between adjacent ducts. Also, the ribs can be continuously arranged over the length of the heat exchange ducts to increase an area supporting the heat exchange sheets, and thus the sag phenomenon of the heat exchange sheet can be prevented.
摘要:
A liquid crystal display device and a testing method thereof is disclosed, which is suitable for improving reliability on testing process, the liquid crystal display device comprising an image display unit divided into a plurality of blocks; a plurality of test pad groups corresponding to the plurality of blocks, respectively; and a plurality of test transistor groups to supply test signals supplied to the plurality of test pad groups to a plurality of liquid crystal cells, wherein the plurality of test transistor groups are formed of a test transistor to independently switch the corresponding liquid crystal cells divided for realizing the same color.
摘要:
Ventilating and air purifying device including a case having a blower therein provided to a ceiling or a wall, a first flow passage provided between the blower and a room for making an outdoor, the blower, and the room in communication, a second flow passage for making the room, an inside of the case, and the outdoor in communication, and a damper in the case for isolating the first flow passage from the second flow passage so that room air is discharged to the outdoor and the room air is guided to the blower, or making the first flow passage and the second flow passage in communication so that the room air introduced into the second flow passage is guided to the blower, thereby ventilating and purifying the room air.
摘要:
A mobile terminal including an interface module configured to connect the mobile terminal to a personal computer; a communication unit configured to communicate with the personal computer via a first communication mode, a controller configured to selectively transmit a communication mode change program to the personal computer via the interface module, the communication mode change program instructing the personal computer to communicate with the mobile terminal via a second communication mode that is different than the first communication mode, and a receiving unit configured to receive a mode change instruction from the personal computer instructing the mobile terminal to communicate with the personal computer via the second communication mode.
摘要:
A network based real-time virtual reality input/output system and method for a heterogeneous environment are provided. The virtual reality input/output system transfers data received from a plurality of virtual reality input device and a request from a plurality of virtual reality applications to at least one corresponding virtual reality data generator among a plurality of virtual reality data generators, and transfers virtual reality data, which is generated by processing data corresponding to the request among the received data by the at least one corresponding virtual reality data generator, to the virtual reality application which transmits the request.
摘要:
The present invention relates to a LED lighting apparatus, comprising a quadrilateral-shaped casing with side walls inclined; a LED lighting module array disposed inside the casing and composed of a plurality of LED lighting modules lined up to emit light; a converter formed on a portion of the outside of the casing supplying power to the LED lighting modules; and a multi-bending reflection minor reflecting light emitted from the LED lighting modules, wherein the LED lighting module array comprises a LED module base combined with a portion of the upper inside surface of the casing; a plurality of LED module brackets connected to a lower portion of the LED module base; a plurality of metal PCB boards combined with a lower portion of each LED module bracket; a plurality of LED chips mounted on the metal PCB boards; and a plurality of lenses concentrating rays of light emitting from the LED chips into focus. Further, the lenses of the LED lighting apparatus according to the present invention have either a plurality of curved surfaces or various curvatures.