Design of Smart Bracelet Based on STM32 Microcontroller *

With the development of electronic information technology, the demand for high-precision and convenient electronic detection equipment for biomedical signals goes straightly high. Heart rate and steps counting are two important indicators of the human body. Based on this, this design studies an intelligent bracelet with health monitoring system, which can detect human movement state and steps counting, measure and analyze the heart rate, and connect wirelessly through Bluetooth module. A STM32 microcontroller is used to collect and analyze the information of motion state, heart rate and step quantity, and then send them to the APP, which is developed based on Android and displayed through Bluetooth module. The users can change their lifestyle by above parameters. Smart bracelets can play a role in reducing the risk of disease.