| Since entering an aging society in 2000,the speed of aging development has been accelerating.The report predicts that China will enter an aging society from an aged society around 2022.At the same time,with the development of society,young people are busy at work and may not be able to accompany and take care of their parents at all times.Once these “empty-nest” elderly people who lack human care around have a physical emergency,it may cause irreversible results.In response to this problem,this paper proposes and designs a vital sign data collection and health warning protection system,the system consists of three parts:hardware terminal equipment,cloud platform,and Android mobile phone client,which enables the guardian to remotely monitor the physical health of the elderly through the mobile phone in real time.When the elderly’s physical sign data has abnormal parameters,it is convenient for the guardian to respond to preventive or protective measures,the main research contents are as follows:First,the sensors MAX30102,DS18B20,and MPU6050 are used to collect data of heart rate、blood oxygen、 temperature、 and exercise signs,communicate with the cloud platform through the ESP8266 wireless communication module,and completed the hardware with STM32F103C8T6 as the core in the Altium Designer hardware development environment circuit diagram drawing and PCB board layout design;Secondly,by comparing and analyzing the fall detection algorithms based on multiple thresholds and single-layer decision trees,the system finally used a fall detection algorithm based on multiple thresholds to determine fall behavior,the algorithm determines whether the human body falls by setting the combined acceleration and inclination thresholds,completed the program design and development of terminal equipment information collection and processing in the KEIL5 development environment,and realized data transmission with the cloud platform;At the same time,developed an Android mobile client on the basis of the cloud platform to realize the remote health status of the elderly monitoring;Finally,the reliability test of the system was carried out.The test results show that the vital signs data collection and health early warning and prevention system can accurately collect human vital signs data and sports posture information,while maintaining good communication with the software platform,which has a certain degree of reliability.The system has positive research significance for the health monitoring,management and prevention of the elderly,and the development of more normalized medical services. |