Table 3.
Deviation percentage and relative uncertainty of smartwatch 1 as compared to the reference vibrometer.
| Frequency (Hz) | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Amplitude | 6.3 | 8 | 10 | 12.5 | 16 | 20 | 25 | 31.5 | 40 | 50 | 63 | 80 | 100 | |
| 10 m/s2 | ε (%) | −1.14 | 1.28 | 0.63 | 0.00 | 0.81 | −0.70 | −1.15 | −1.56 | −1.31 | −2.81 | −4.83 | −9.32 | −20.64 |
| Urel | ±3.0 | ±3.0 | ±3.0 | ±3.0 | ±3.0 | ±3.0 | ±3.0 | ±3.0 | ±3.0 | ±3.0 | ±3.0 | ±3.0 | ±3.1 | |
| 5 m/s2 | ε (%) | 1.10 | −0.37 | −0.20 | −0.29 | −0.30 | −0.65 | −1.28 | −1.65 | −1.12 | −2.45 | −4.54 | −9.13 | −20.68 |
| Urel | ±3.0 | ±3.0 | ±3.0 | ±3.0 | ±3.0 | ±3.0 | ±3.0 | ±3.0 | ±3.0 | ±3.0 | ±3.0 | ±3.0 | ±3.2 | |
| 1 m/s2 | ε (%) | 1.41 | 0.49 | 0.25 | 0.35 | −0.45 | −0.63 | −1.54 | −2.51 | −1.61 | −3.03 | −4.84 | −9.44 | −20.82 |
| Urel | ±3.1 | ±3.1 | ±3.1 | ±3.1 | ±3.1 | ±3.1 | ±3.1 | ±3.1 | ±3.1 | ±3.1 | ±3.1 | ±3.1 | ±3.8 | |
Values in red: deviation values greater than 6% with respect to the reference.