EcoIMU: A compact, wireless, gyro-free inertial measurement unit based on two triaxial accelerometers

EcoIMU is a gyro-free, wearable inertial measurement unit (IMU) built with a pair of triaxial accelerometers that are spatially separated and wirelessly connected. It can output the translation and rotation of the body for the purpose of motion tracking and dead reckoning applications. It mitigates error accumulation and drift problems using domain knowledge including pause identification and geometric constraints on the two nodes. This demo shows the EcoIMU system in action by tracking all six degrees of freedom, namely triaxial translation and rotation and showing the results in a 3D animated cube.