NOMICS BRIZZY NS21 Manuel D'utilisation page 34

Eng
Technology
Values
Sampling frequency
Technology
Measurement range 70mm (2.75») to 235mm (9.25»)
Resolution
Sampling
frequency
Conditioning
Eng-32 MU_BRIZZY_REV5 / 03-2017
Mandibular movement sensor
Resonant magnetic field transducer. Short (< 2.5ms) magnetic pulses of 8kHz frequen-
cy and of very low energy are generated by the emitter probe of the sensor. The signal
received by the other probe is analysed in order to infer the distance (d) between them.
The numerical resolution on display is 0.1mm. The resolution achieved in practical
usage is linked to the distribution of noise in measurements. The effective resolution is
defined as the maximum of numerical resolution and rms noise value. It depends on
the distance between the two sensor probes:
10Hz
Low-pass filtering with 1Hz cutoff frequency
Position sensor
3D accelerometer
lying supine / lying on the right side / lying on
the left side / lying prone / upright
1Hz
d
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0.00
7.5 9.5 11.5 13.5 15.5
Distance (cm)
17.5 19.5 21.5 23.5
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