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公开(公告)号：US10852024B2
公开(公告)日：2020-12-01
申请号：US16144044
申请日：2018-09-27
Applicant: LG ELECTRONICS INC. , Pusan National University Industry-University Cooperation Foundation
Inventor： Hakrae Lee , Jinho Kim , Chulmin Park , Donggi Eom , Seontae Yoon , Kyongdo Lee , Kwonhyung Lee , Sukchan Kim
IPC: H04W72/02 , H04W72/04 , H04Q9/02 , F24F11/00 , F24F11/58 , F24F11/62 , F24F1/0003 , H04W4/33 , F24F120/10 , G05B15/02
Abstract: A method for controlling an air conditioner system may include receiving, by one of an outdoor unit and a plurality of indoor units in a group, a command; transmitting, by the outdoor unit, a channel scan command to the plurality of indoor units; performing a channel scan by each of the outdoor unit and the plurality of indoor units; transmitting, by the plurality of indoor units, channel scan results to the outdoor unit; determining, by the outdoor unit, a channel to be used among a plurality of pre-set channels of a particular group based on a result of the channel scan performed by the outdoor unit and the channel scan results received from the plurality of indoor units; and outputting, by the outdoor unit, information on the channel to the plurality of indoor units. According to this method, an optimal wireless communication channel may be set.
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公开(公告)号：US10760811B2
公开(公告)日：2020-09-01
申请号：US16144119
申请日：2018-09-27
Applicant: LG ELECTRONICS INC. , Pusan National University Industry—University Cooperation Foundation
Inventor： Hakrae Lee , Jinho Kim , Chulmin Park , Donggi Eom , Seontae Yoon , Kyongdo Lee , Kwonhyung Lee , Sukchan Kim
IPC: F24F11/58 , F24F1/0003 , G05B21/00 , F24F11/62 , F24F11/61 , F24F11/64 , F24F11/88 , F24F11/52 , F24F11/30 , F24F11/56 , H04W72/04 , H04W72/02
Abstract: A method for controlling an air conditioner system may include a preset reception rate degradation error occurs in one or more indoor unit, transmitting a channel switch request signal to an outdoor unit belonging to a particular group; performing a channel scan by each of the outdoor unit and the plurality of indoor units; transmitting, by the plurality of indoor units, channel scan results to the outdoor unit; determining, by the outdoor unit, a channel to be used by the particular group based on a result of a channel scan performed by the outdoor unit and the channel scan results received from the plurality of indoor units; and outputting, by the outdoor unit, information on the channel to the plurality of indoor units. Accordingly, the communication channel may be changed to an optimal communication channel according to a change a communication environment.
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公开(公告)号：US11156379B2
公开(公告)日：2021-10-26
申请号：US16233480
申请日：2018-12-27
Applicant: LG ELECTRONICS INC.
Inventor： Hakrae Lee , Hanbae Jeon , Jinho Kim , Sunyoung Park , Chulmin Park , Seontae Yoon , Kyungdo Lee , Kwonhyung Lee
Abstract: Disclosed is an air conditioner system comprising at least one outdoor unit and a plurality of indoor units. The plurality of units may be grouped into one or more groups. A wireless communication module may be provided at each of the plurality of units and configured to perform wireless communication using a Sub-GHz frequency band. The wireless communication module may include an encoder configured to encode a predetermined signal, a modulator configured to modulate the encoded signal according to Orthogonal Frequency Division Multiplexing (OFDM) using multiple subcarriers, at least one antenna having an antenna pattern formed on a Printed Circuit Board (PCB), and configured to output a signal based on the modulated signal, a demodulator configured to demodulate a signal received at the at least one antenna, according to the OFDM, and a decoder configured to decode the demodulated signal. Accordingly, a high-quality wireless communication environment may be implemented.
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