Research Article

Exploiting Performance of Different Low-Cost Sensors for Small Amplitude Oscillatory Motion Monitoring: Preliminary Comparisons in View of Possible Integration

Table 3

Accuracy (RMSE), bias (mean), and noise (standard deviation) in test with 0.02 m amplitude.

  [m/s2  m/s  m
RMSEMeanSTDRMSEMeanSTDRMSEMeanSTD

MEMS 0.028 −0.002 0.028 0.99 0.004 0.000 0.004 0.99 0.0003 −0.0002 0.0002 0.99
Kinect v2 0.415 −0.014 0.415 0.93 0.017 0.000 0.017 0.98 0.0009 −0.0005 0.0008 0.99
uBlox 0.557 −0.003 0.557 0.85 0.029 0.000 0.029 0.95 0.0088 0.0000 0.0088 0.75

MEMS0.037−0.0010.0370.980.004−0.0010.0040.990.0003−0.00010.00030.98
Kinect v20.651−0.0050.6510.890.0230.0010.0230.980.00100.00000.00100.99

MEMS0.051 −0.005 0.051 0.98 0.004 −0.001 0.004 0.98 0.0003 −0.0001 0.0003 0.98
Kinect v20.660 0.016 0.660 0.92 0.023 0.000 0.023 0.970.00090.00010.00090.99

MEMS0.074 −0.007 0.074 0.93 0.012 0.011 0.007 0.93 0.0011 0.0010 0.0006 0.95
Kinect v21.218 0.002 1.218 0.89 0.031 0.001 0.031 0.98 0.0009 0.0000 0.0009 0.99