The wireless transmission node designed in this report receives the data generated by ECG detection module, temperature measurement and exercise statistics module using STM32 single-chip microcomputer system. sends results after digital signal processing algorithm calculations to mobile terminal, realizing dynamic display of electrocardiogram, body temperature, volume monitoring arrhythmia. We ...

Ambient particles from natural and anthropogenic sources are a major cause of premature deaths globally. While there many instruments suitable for scientific measurements aerosols, better methods long-term monitoring purposes still needed, especially low-maintenance, affordable solutions ultrafine particles. In this article, we present new sensor design prototype, the inherently charged particl...