Table 5.
Deviation percentage and relative uncertainty of smartwatch 3 as compared to the reference vibrometer.
| Frequency (Hz) | ||||||||
|---|---|---|---|---|---|---|---|---|
| Amplitude | 6.3 | 8 | 10 | 12.5 | 16 | 20 | 25 | |
| 10 m/s2 | ε (%) | −0.88 | 0.71 | −0.17 | 0.03 | −0.12 | −0.29 | 11.90 |
| Urel | ±3.1 | ±3.1 | ±3.1 | ±3.2 | ±3.3 | ±3.4 | ±3.6 | |
| 5 m/s2 | ε (%) | 0.74 | −0.11 | 0.06 | 0.05 | −0.04 | −1.13 | 11.68 |
| Urel | ±3.2 | ±3.1 | ±3.1 | ±3.2 | ±3.3 | ±3.4 | ±3.6 | |
| 1 m/s2 | ε (%) | −0.42 | −1.50 | −1.53 | −1.84 | −1.43 | −1.41 | 7.41 |
| Urel | ±3.1 | ±3.1 | ±3.2 | ±3.2 | ±3.3 | ±3.4 | ±3.7 | |
Values in red: deviation values greater than 6% with respect to the reference.