Inertial motion capture

Human motion tracking based on IMUs (Inertial Measurement Units) can be advantageous in certain cases: for example, when portability is strictly required – high-end inertial sensors like STT-IWS may well suit the needs of those who need a quick analysis on a specific joint or even on the entire body, but do not wish to be bound to a certain location.

FLEXIBLE CONFIGURATIONS IN ‘iSen’THE STT-IWS INERTIAL SENSOR

Flexible configurations in iSen

An iSen system adapts exactly to your needs. It is prepared to work with various sensor configurations, from a simple, 1-sensor configuration to a 16-sensors, full-body configuration – all of them working at a sampling rate of 25 to 400Hz.

iSen

PROTOCOL NAME	1 sensor	2 sensors	3 sensors	4 sensors	5 sensors	6 sensors	7 sensors	8 sensors	9 sensors	14 sensors	16 sensors
Basic gait analysis	✔	✔	✔	✔	✔	✔	✔	✔	✔	✔	✔
Countermovement jump	✔	✔	✔	✔	✔	✔	✔	✔	✔	✔	✔
Individual joints (knee, hip, elbow, shoulder…)		✔	✔	✔	✔	✔	✔	✔	✔	✔	✔
Head and neck		✔	✔	✔	✔	✔	✔	✔	✔	✔	✔
Wrist (L or R)		✔	✔	✔	✔	✔	✔	✔	✔	✔	✔
Pelvis and torso		✔	✔	✔	✔	✔	✔	✔	✔	✔	✔
Torso and arms			✔	✔	✔	✔	✔	✔	✔	✔	✔
Shoulder and elbow (L or R)			✔	✔	✔	✔	✔	✔	✔	✔	✔
Full arm (L or R)				✔	✔	✔	✔	✔	✔	✔	✔
Cervical, pelvis & thighs				✔	✔	✔	✔	✔	✔	✔	✔
Both knees (free/gait)				✔	✔	✔	✔	✔	✔	✔	✔
Full leg (free/gait)				✔	✔	✔	✔	✔	✔	✔	✔
Both ankles (free/gait)				✔	✔	✔	✔	✔	✔	✔	✔
Both arms (no torso)				✔	✔	✔	✔	✔	✔	✔	✔
Pelvis, back and head				✔	✔	✔	✔	✔	✔	✔	✔
Lower body (hips & knees)					✔	✔	✔	✔	✔	✔	✔
Back, arms & thighs						✔	✔	✔	✔	✔	✔
Lower body (std. Gait)							✔	✔	✔	✔	✔
Lower body + back								✔	✔	✔	✔
Upper body								✔	✔	✔	✔
Lower body + heels									✔	✔	✔
Full body (no-hands) N-pose and T-pose										✔	✔
Full body N-pose and T-pose											✔
Full body N-pose & tool											✔

The STT-IWS inertial sensor

The primary source of data in iSen are the STT-IWS inertial units. These sensors have been carefully designed, manufactured and calibrated to ensure:

<0.5° static accuracy (RMS), <2° dynamic accuracy (RMS).
The finest drift correction.
A robust electronic calibration: no re-calibration needed.
A stable communication protocol over Wi-Fi.

Take a look to the detailed STT-IWS page.