Cloud Monitoring System Based On Multi-MEMS Sensor Fusion

With the social and economic development,the elderly population has gradually increased in our country,that the care of the elderly population brings great pressure to young people and society.What's more,there are fewer products on the market for the fall of the elderly,they may be hurt in the accidental that can not get timely monitoring due to lack of custody and medical security.In addition,the trauma in the process of movement have very few corresponding monitoring products.With the development of the Internet and sensors,the monitor of body's physical health must to be convenience and remotision?In this paper,a cloud monitoring system that based on the multi-MEMS sensor fusion is designed to detect the heart rate and fall injury of the human body.According to the analysis of ECG signal theory to design the ECG signal acquisition method,AD8232 as the core of ECG signal acquisition,Designed for ECG pretreatment algorithm at Embedded Systems,using median filter and mathematical morphology filtering method to remove ECG signal interference and baseline drift interference.The R peak of the QRS wave is detected by the combination of dynamic threshold and dynamic difference threshold.And the ECG signal can through the data remote upload to the cloud server,The guardian can obtain the user's ECG data through the App access the cloud server.For the current fall system algorithm is too complex and lack of corresponding products in the market,Using the accelerometer,gyroscope,barometer sensor fusion method to detect the user's fall state,a second-order ButterWorth low-pass filter is designed to filter the sensor signal,And use the posture solution and highly resolved data to extract useful information,using the double threshold method to judge the speed of the attitude angle and the Z-axis direction,and increasing the effective rate of the fall detection.The whole system design for the purpose of portable,with a small volume to carry,low cost for most users,testing equipment can be extended and so on.