How does a motion sensor work?

A motion sensor, like the Motion Reference Units (MRUs) developed by Norwegian Subsea, functions by detecting and measuring movement. At their core, these sensors utilize state-of-the-art Micro-Electro-Mechanical Systems (MEMS) technology. MEMS accelerometers measure linear acceleration (changes in velocity along the Surge, Sway, and Heave axes), while MEMS gyroscopes measure angular velocity (rate of rotation around the Roll, Pitch, and Yaw axes).

To provide a comprehensive and accurate measurement of motion in all six degrees of freedom (6DoF) – Roll, Pitch, Yaw, Heave, Surge, and Sway – data from multiple MEMS sensors is intelligently combined. Norwegian Subsea employs advanced sensor fusion algorithms that process these raw sensor inputs, filtering out noise and compensating for external forces like gravity, to calculate precise orientation and movement data in real-time.

This sophisticated combination of quality hardware and advanced algorithms allows Norwegian Subsea MRUs to deliver high-performance, reliable motion data essential for demanding applications in the marine, subsea, and offshore energy sectors. Our sensors are rigorously tested and validated in real sea conditions, ensuring robust performance and accuracy for critical operations.