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Technology Front

New iNEMO Sensors from STMicroelectronics Deliver ML Core Efficiencies for Industrial and Consumer

Published: Mar 25,2020

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STMicroelectronics is extending the benefits of its motion-detection machine-learning core (MLC) technologies into industrial and high-end consumer applications with the latest ISM330DHCX and LSM6DSRX 6-axis iNEMO inertial measurement units (IMU).

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The MLC performs basic AI pre-processing of motion data using about 0.001 times the power a typical microcontroller (MCU) would consume to complete the same task. As a result, IMUs featuring this IP can offload the host MCU, enabling longer battery runtime, lower maintenance, and reduced size and weight in context-aware and motion-sensing devices.

Following the launch of the first MLC-enhanced commercial IMU last year, ST’s LSM6DSRX and ISM330DHCX are ready for high-end consumer and industrial applications such as augmented/virtual reality, drone flight controls, dead-reckoning navigation systems, disk-antenna positioning systems, fleet management, container-tracking devices, and dynamic inclinometers for industrial vehicles. The consumer-grade LSM6DSRX contains a 3-axis accelerometer and a 3-axis digital gyroscope with extended full-scale angular-rate range up to ±4000dps and leading-edge performance in temperature and time. The industrial-grade ISM330DHCX comes with 10-year product-longevity assurance and is specified from -40°C to 105°C, with embedded temperature compensation for superior stability.

In each device, the MLC interacts with integrated finite-state machine (FSM) logic, which can run simple repetitive algorithms like counting steps, hits, or rotations at lower power than is possible in a microcontroller. The FSM signals to the main controller after detecting a preset number of events or after a defined time has elapsed.

Both devices are in production now. The ISM330DHCX is available as a 14-lead plastic land grid array (LGA) device.

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