STMicroelectronics LSM6DSV32X 6-axis inertial measurement unit

Monday, 27 May, 2024 | Supplied by: STMicroelectronics Pty Ltd

The LSM6DSV32X 6-axis inertial measurement unit (IMU), from STMicroelectronics, features a 3-axis digital accelerometer and a 3-axis digital gyroscope to measure intensive movements and impacts, including freefall height estimation. Ready to drive future generations of edge-AI applications, the sensor device enables long battery runtime in consumer wearables, asset trackers, and impact and fall alarms for workers.

The module extends the family of smart sensors that contain ST’s machine-learning core (MLC) with AI algorithms based on decision trees. With the MLC for context sensing and a finite state machine (FSM) for motion tracking, the sensors let product developers add new features, minimise latency and save power.

Leveraging its embedded features, the IMU reduces the power budget for functions such as gym-activity recognition to below 6 µA. It also embeds ST’s Sensor Fusion Low-Power (SFLP) algorithm to perform 3D orientation tracking at just 30 µA. By supporting adaptive self-configuration (ASC), the module autonomously reconfigures sensor settings in real time to continuously optimise performance and power.

In addition to the accelerometer and gyroscope, the IMU integrates ST’s Qvar electrostatic charge-variation sensing to handle advanced user-interface functions such as touching, swiping and tapping. The module also contains an analog hub for acquisition and processing of external analog signals. It is available in a 2.5 x 3 x 0.83 mm 14-lead LGA package.

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