Biometric signal detection device for occupant in cabin and control method of same device

A biosignal detection device for detecting a biosignal of at least one occupant riding in a cabin of a vehicle, the biosignal detection device comprising:

• an interface unit that receives, from the vehicle, vehicular information about a posture, inclination, and movement of the vehicle, and occupant detection information obtained by detecting the at least one occupant within the cabin;
• a detection signal transmission and reception unit that includes a plurality of antennas, sends out a detection signal for detecting a biosignal of each occupant within the cabin, and receives the detection signal reflected from each occupant's body;
• and
• a control unit that controls the detection signal transmission and reception unit in such a manner that a number of occupants within the cabin and a location of each occupant are detected based on the occupant detection information, that the plurality of antennas is distributed according to the number and locations of the detected occupants in a manner that corresponds to each occupant, that a vehicular state including at least one of a vibration, inclination, or movement of the vehicle, is detected based on the vehicular information, and that, based on the detected vehicular state, at least one signal characteristic of the detection signal associated with a detection sensitivity of each occupant's biosignal, are modulated and sent out,
• wherein the control unit controls the detection signal transmission and reception unit in such a manner as to preprocess the received detection signal, and each occupant's biosignal is obtained from the received detection signal.