Motion Analysis » Inertial motion capture

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

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.


PROTOCOL NAME1 sensor2 sensors3 sensors4 sensors5 sensors6 sensors7 sensors8 sensors9 sensors11 sensors14 sensors16 sensors
Basic gait analysis
Countermovement jump
Individual joints (knee, hip, elbow, shoulder…)
Head and neck
Wrist (L or R)
Pelvis and torso
Cervical and arms
Shoulder and elbow (L or R)
Epicondylitis analysis (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)
Back and arm, including escapula (L or R)
Pelvis, back and head
Lower body (hips & knees)
Back, arms & thighs
Lower body (std. Gait)
Lower body + back
Upper body
Lower body + heels
Lower body + heels + spine
Full body (no-hands) N-pose and T-pose
Full body N-pose and T-pose
Full body N-pose & tool

Inertial sensors for movement analysis

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.

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