Making waves on and under the water’s surface
Movella pioneered the first motion tracking solutions in the marine industry. Since then, the need for motion tracking in maritime applications has increased significantly. Underwater robotics, marine surveyor systems, autonomous boats, heavy compensating cranes, and virtual anchors need to operate in sturdy and rough weather conditions as well as salt- and fresh-water influences.
Navigating the challenges
Above and below the water’s surface, orientation and positioning can be challenging, due to:
- The absence of GNSS signals beneath the surface
- Distortion of the Earth’s magnetic field by metal, heavy machinery, and power electronics
- The harsh environment: salt water, mechanical shocks and continuous wave motion
- Poor visibility
- Absent or weak signals
Our attitude and heading reference system (AHRS) solutions provide accurate and reliable 3D orientation data with a small form factor and low power consumption, making them the right fit for small AUVs, ROVs, and subsea measurement tools.
The onboard sensor fusion algorithms keep track of roll, pitch, and absolute heading even during quick maneuvers and despite the presence of magnetic disturbances. Additionally, Movella provides calibration software for magnetic disturbances that are present continuously.
Our vertical reference unit (VRU) and inertial navigation system (GNSS/INS) solutions can be used in a variety of applications. They provide calibrated IMU data and real-time estimates of 3D orientation, velocity, and position. Our IP67/68-rated Motion Tracker industrial-grade (MTi) are robust, easily installed, and highly cost-effective compared to traditional motion reference units. They’ve been known to go 24/7 for years, without the need for recalibration.
Fully configurable motion trackers
Our motion trackers are fully configurable and can provide your (robotic) platform with any data combination, including:
- 3D angular velocity
- (free) acceleration
- magnetic field
- barometric pressure
- position, velocity, and status
Compared to standard IMUs, Movella provides motion trackers that are fully calibrated for a wide variety of sensor characteristics, including – but not limited to – sensor bias, temperature, non-linearity and misalignment.
Available with various hardware interfaces (e.g., CAN, RS232, I2C, SPI, UART, USB) and NMEA output messages.
How Xsens technology can help
Autonomous vehicles must know where they are and where they’re going, at all times. Xsens motion tracking solutions enable this level of autonomy.
That’s why many customers in this market rely heavily on our magnetic immune algorithms, which allow Xsens-enabled systems to hold a heading without a compass. The form factor tends to be less demanding in this field, with ample space allowing for larger – and therefore generally less costly – motion tracking solutions.
Recommended Xsens sensor modules
Our Motion Tracker Industrial-grade (MTi) product series is based on over 10 years of research and development, hands-on experience, and innovative drive – and comes with global 24/7 tech support. The range of our sensor modules offers exceptional data accuracy and precision, plug and play configurability, and the market’s best performance-to-price ratio.
The MTi-2 is a self-contained VRU featuring sensors that provide calibrated data on the rate of turn, the acceleration, and the magnetic field – all in 3D.
The MTi-3 Inertial Measurement Unit is a self-contained AHRS that delivers true-north-referenced yaw, or heading.
The MTi-7 is an GNSS/INS which can synchronize the inputs from its on-board accelerometer, gyroscope and magnetometer with the data from an external GNSS receiver.
The MTi-200 is a high-performing VRU. Its sensors and sensor fusion algorithm measure roll, pitch, and (unreferenced) yaw.
The MTi-300 is our highest-performing attitude and heading reference system. Its sensors and sensor fusion algorithm deliver data on drift-free roll, pitch and true-north-referenced yaw.