Research On ECG Detection And Human Activity Sensing Technology For Family

The aging of the population of our country is increasing.According to the researcher's speculation that the number of elderly people in China will reach 31.1%of the total population by the year2050.Due to the reasons of modern work and living habits,many elderly people do not live together with their children.The number of empty nesters is increasing year by year,and most of the elderly's health is not monitored in time.In the case of sudden illness or accidental fall,the health of their lives is threatened because of the lack of timely assistance.In recent years,the health status of the elderly has been paid more and more attention,and the development trend of the health monitoring of the elderly is very rapid.Therefore,the research on the monitoring of the health status of the elderly has been carried out in this subject.This article mainly carries on the research of four aspects.(1)Aiming at the features of ECG and the functions to be realized,the hardware circuit of portable ECG detection system for home is designed and implemented,and the circuit is simulated with Multisim software,then the hardware PCB circuit board is made and the circuit hardware function is realized.(2)The software functions of portable ECG detection system are compiled by IAR software,including data acquisition,QRS detection processing,storage and display.Aiming at the family-oriented portable ECG acquisition system,a box-scoring algorithm is proposed for ECG,which is suitable for the single chip microcomputer.(3)Aiming at the low-frequency characteristics of indoor activity signals of the aged and the low frequency dynamic characteristics of magneto-electric vibration velocity sensor,the design of the hardware compensation circuit of low-frequency characteristic is realized based on the zero-pole compensation method,and the PCB compensation circuit board is made.(4)Set up the compensation circuit debugging platform.The sensitivity of circuit parameters to the amplitude-frequency characteristic curve of magneto-electric vibrating velocity transducer is analyzed,and the debugging process of low frequency compensation circuit of vibration speed sensor is summarized.