智能运动手环设计

Design of Intelligent Sports Hand RingAbstractNowadays,with the improvement of people's living standards,people have greater concern for theirhealth problems.Only a good body can experience life.Therefore,health problems are getting more and moreattention from the public.But how can we let the public better understand their physical and mental health?Electronic information technology and medicine are developing at the same time.The combination of the twocan solve people's health problems.Therefore,people need more high-precision portable medical monitoringinstruments.Human monitoring indicators generally pass through two major indicators of heart rate meter step.For this reason,a motion monitoring module based on single-chip computer is designed according to the needsof the development of the times.This design mainly consists of MSP430F149 MCU circuit,ADXL345 acceleration sensor,heart ratedetection module circuit,LCD1602 LCD display circuit,power supply circuit.The measurement of gravityacceleration by ADXL345 is used to judge the state of human body and to measure the steps according to thenumerical changes of the state.Through the heart rate sensor test,through finger pulse amplification,after thecomparator processing sent to the MCU for heart rate acquisition.The steps and heart rate were displayed onLCD1602.This design system has low cost,comprehensive functions and good market prospects.Key words:MCU;Heart Rate;Step Number,Intelligent Bracelet0