STMicroelectronics extends Edge-AI sensor family

19th April 2024
Harry Fowle

STMicroelectronics has extended its Edge-AI sensor family with an inertial module for intensive movement analysis.

The LSM6DSV32X 6-axis inertial module (IMU) from STMicroelectronics has a large accelerometer full-scale range of 32g and 4000 degrees-per-second (dps) gyroscope to measure intensive movements and impacts, including freefall height estimation. Ready to drive future generations of Edge-AI applications, the new sensor device enables extra features and longer battery runtime in consumer wearables, asset trackers, and impact and fall alarms for workers.

The LSM6DSV32X 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, these sensors let product developers add new features, minimise latency, and save power. Leveraging the embedded features LSM6DSV32X slashes the power budget for functions such as gym-activity recognition to below 6µA. The LSM6DSV32X also embeds ST’s Sensor Fusion Low-Power (SFLP) algorithm to perform 3D orientation tracking at just 30µA. And 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 LSM6DSV32X 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.

Product developers can rely on a large selection of ready-to-use libraries and tools to accelerate time to market for new products. These include the intuitive MEMS Studio environment, which supports evaluation and use-case development, and a dedicated GitHub repository that provides code examples such as sports-activity and head-gesture recognition. Resources also include hardware adapters for connecting the IMU to ST’s evaluation and proof-of-concept boards such as the ProfiMEMS board, Nucleo sensor expansion board, and PRO.

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