Inertial sensors supplier, Xsens, has upgraded its industrial-grade Xsens Sirius and Xsens Avior IMUs for real-time stabilisation and wave compensation in a wide range of marine applications.
Marine engineers can now access comprehensive motion data – roll, pitch, yaw, and Heave – from a single compact sensor. This eliminates the need for external processing or for oversized systems while maintaining the precision required for offshore platforms, vessels, docking systems, marine robots, buoys, and surveying equipment. All processing happens on-device, simplifying system integration and reducing latency.
The algorithm uses proprietary phase correction and bias estimation to mitigate the effect of drift over extended operating periods. Users can also define offset points – Center of Rotation and Point of Interest – ensuring that Heave values reflect the true motion of the vessel or payload, even when the MRU is installed away from the POI.
Xsens Motion Reference Units (MRUs) – IMUs with Heave capability – deliver real-time Heave accuracy better than 5cm for wave periods up to 29s. This covers most marine applications. For longer wave periods up to 40s, accuracy is approximately 6cm, twice the range supported by comparable industrial-grade MRUs.
Xsens Avior is a compact OEM module for embedded system designs, and Xsens Sirius is a standalone MRU in a rugged IP68 housing for harsh environments, both available from Movella www.movella.com/products/sensor-modules.
