STMICROELECTRONICS’ peripherals and STM32F4 32-bit MCU are being used by Xmetrics in its wearable activity tracker for swimmers.
The device, which is also called Xmetrics, clips onto the swimmer’s google band at the back of the head, where it provides accurate position tracking and real-time audio feedback.
ST’s 9-axis MEMS inertial module senses the body movements and provides precise data analysed by the XMetrics algorithm, executed inside an STM32F4 32-bit microcontroller, to detect the swimming style and determine the number of laps and strokes, stroke frequency and quality, flip-turn efficacy, speed, and elapsed time.
The STM32F4 microcontroller from ST handles overall system processing inside the XMetrics swim monitor. It runs sophisticated algorithms that recognise and interpret all of the complex biomechanical parameters to provide first-level analysis.
As a result, swimmers get instant information on their performance through waterproof earphones so they know exactly how they are doing at any turn or stop during the swimming session. ST also supplied XMetrics with a dedicated component that protects the device against electrostatic discharge, securing a high level of signal integrity for the USB 2.0 interface.
XMetrics software and apps enable swimmers to program their training schedule and customise the audio feedback. The device also features automatic synchronization via tablet or smartphone, and any parameter can be changed at any time.
Out of the water, users can analyze every aspect of their swim using advanced graphical tools and share results with their coach and friends.
According to XMetrics, the device delivers a perfect balance of functionality, comfort and battery life thanks to the superior performance and energy efficiency of ST‘s miniature chips.
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