Ultra-thin flexible sport fitness monitoring system with high signal-to-noise ratio

The invention belongs to the field of flexible skin electronics, and discloses an ultra-thin flexible sport fitness monitoring system with a high signal-to-noise ratio. The ultra-thin flexible sport fitness monitoring system comprises a wireless data acquisition unit, an electrocardiographic signal acquisition electrode, a circuit compensation unit, a hydration electrode and a temperature sensor,wherein the electrocardiographic signal acquisition electrode is used for measuring an electrocardiogram signal; the circuit compensation unit is used for enhancing signal-to-noise ratio of the electrocardiogram signal; the hydration electrode is used for measuring the intensity of skin hydration; the wireless data acquisition unit comprises a flexible casing and a flexible circuit board wrapped therein, the flexible casing is provided with a groove that is filled with liquid metal, and the lower end of the groove is provided with an I-shaped conductive connecting sheet. When the wireless dataacquisition unit is shake