Development of a swimming monitor capable of real-time voice feedback using IoT technology

XMetrics, a wearable manufacturer, announced that it has developed an activity tracker utilizing ST's small motion sensing and data processing chips. The product, actually developed by swimmers, provides accurate positioning and real-time voice feedback capabilities.

X-Metrics is ergonomic and lightweight, so it is clipped onto the back of a swimmer's goggle band. ST's 9-axis MEMS inertial module detects body movements to provide accurate data, and an X-Metrics algorithm running inside the 32-bit microcontroller STM32F4 analyzes this to detect swimming style and determine the number of laps, strokes, stroke frequency and quality, as well as the efficiency, speed, and elapsed time of flip-turn movements.

ST's STM32F4 microcontroller handles the entire system processing task within the X-Metrics swim monitor. It executes sophisticated algorithms to identify and interpret all complex biomechanical parameters, providing first-stage analysis results.

Because athletes can hear their performance directly through waterproof earphones, they can accurately know every turn and stop during swimming. ST also supplied dedicated components to protect against electrostatic discharge in X-Metrics, further enhancing the level of signal integrity in the USB 2.0 interface.

Such measurements and analyses allow for the programming of training schedules and the adjustment of voice feedback to suit needs through software and apps. Synchronization with smart devices is automatic, and all parameters can be changed at any time.



Former Olympic Medalist: “If this product had existed, I probably would have won another medal”

Andrea Rinaldo, CEO of Xmetrics, a current swimming coach and former swimmer, stated, “Our dream was to develop an easy-to-use and powerful Smart-Things trainer that would provide all swimmers with the same assistance as a personal coach, and ST’s cutting-edge IoT technology helped make this dream a reality.” He added, “The superior performance and energy efficiency provided by ST’s compact chips maximized the usability of the monitor while ensuring users enjoyed balanced benefits in terms of functionality, ease of use, and battery life.”

Massimiliano Rosolino, an Italian Olympic medalist swimmer“X-Metrics is a great product that helps swimmers of all levels train and exercise. If I had had X-Metrics when I was preparing for the Olympics, I probably would have won one more medal,” said ino.