표 1. | Table 1. 측정 거리에 따라 레이다 센서를 이용하여 검출된 생체신호 정확도 | Detection accuracy of vital signs depending on measurement distances by using the radar sensor.
Distance (cm) | Respiration | Heart rate |
Radar (BPM) | Reference (BPM) | Error (%) | Radar (BPM) | Reference (BPM) | Error (%) |
20 | 13.67 | 13.69 | −0.13 | 75.24 | 72.00 | 4.50 |
40 | 13.67 | 13.69 | −0.13 | 70.08 | 70.02 | 0.09 |
60 | 15.38 | 15.41 | −0.16 | 66.66 | 66.84 | −0.27 |
80 | 13.67 | 14.06 | −2.77 | 64.98 | 65.16 | −0.28 |
100 | 17.09 | 17.11 | −0.09 | 64.98 | 65.16 | −0.28 |
120 | 17.09 | 15.48 | 10.43 | 64.98 | 66.84 | −2.78 |
140 | N/A | 13.69 | N/A | N/A | 66.84 | N/A |