Unobtrusive Support System for Prevention of Dangerous Health Conditions in Wheelchair Users

Figure 13

(a) RR and (b) HR series obtained from raw EMFi signals. Rectangular areas mark the zones of (c) BCG signal detected as noise. Vibration during wheelchair driving and subject’s movements produces (d) noise signals. When this occurs, the algorithms to calculate HR and RR are stopped. Only during (e) clear BCG signals are vital signs estimated.