STMicroelectronics' ASM330LHHX inertial measurement unit (IMU) takes a step closer to intelligently driving high levels of automation with its machine learning (ML) core. The ML core enables fast real-time response and sophisticated functions with low system power demands.
Leveraging ST's microelectromechanical systems (MEMS) technology, the automotive-qualified ASM330LHHX houses a 3-axis accelerometer and 3-axis gyroscope in a 2.5 x 3 x 0.83 mm footprint. The 6-axis module provides motion and attitude detection for functions including vehicle positioning and digital stabilization.
The ML core, a connected processing engine, runs AI algorithms directly on the sensor, ensuring extremely low latency between the detection of an event and the vehicle's response. This enables sophisticated real-time performance that requires far less system energy and computing power than a solution embedded in an application processor or cloud-based AI.
Free demo boards and software example libraries are available to simplify application development. Available functions include stationary vehicle detection, attitude and heading reference, altitude estimation, car trailer detection and collision detection.
The ASM330LHHX has two modes of operation, including low power consumption mode to run always-on applications such as telematics, anti-theft systems, motion-activated functions, and vibration monitoring and compensation. When operated in low power consumption mode, the current is less than 800 µA with the accelerometer and gyroscope working.
There is also a high-performance mode for applications that require the highest accuracy and lowest latency, including precise positioning, vehicle-to-everything (V2X) communication, and impact detection and accident reconstruction.
ST's proven MEMS manufacturing processes ensure excellent sensor stability and low noise, observed in the low measured Allan variance (AVAR) for both the gyroscope and accelerometer. The module maintains consistent high accuracy across the extended operating temperature range, from -40° to 105° C.
