| CPC A61L 2/24 (2013.01) [A61L 2/10 (2013.01); A61L 2/18 (2013.01); G06T 7/70 (2017.01); G06V 10/82 (2022.01); G06V 20/50 (2022.01); G06V 40/10 (2022.01); G10L 25/30 (2013.01); G10L 25/66 (2013.01); H04N 7/188 (2013.01); H04N 23/695 (2023.01); H04R 1/406 (2013.01); H04R 3/005 (2013.01); A61L 2202/14 (2013.01); A61L 2202/16 (2013.01); G06T 2207/20084 (2013.01); G06T 2207/30196 (2013.01)] | 21 Claims | 

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               1. A method of controlling a robot comprising: 
            identifying that an audio signal input through a plurality of microphones on the robot corresponds to a coughing sound, 
                based on the audio signal input through the plurality of microphones on the robot being identified as corresponding to the coughing sound, identifying an originating direction of the audio signal based on an arrangement direction of each microphone and a difference in intensity of audio signals that are respectively input to the plurality of microphones, wherein the plurality of microphones are arranged in different directions; 
                based on the audio signal input through the plurality of microphones being identified as corresponding to the coughing sound, capturing an image in the originating direction of the audio signal corresponding to the coughing sound using a camera on the robot; 
                identifying a sterilization area based on a position of a non-mask wearing user identified from the image; and 
                moving the robot to the sterilization area. 
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