Design Of Wearable Physiological Parameter And Posture Detection Syste

With the improvement of people’s living standards,people’s awareness of health is also gradually enhanced,and the corresponding demand for more convenient wearable testing equipment is also increasing.For the increasing demand for wearable health monitoring system,this paper designs a wearable physiological parameters and posture detection system,the system can detect physiological parameters such as the body temperature,heart rate,blood oxygen saturation,respiration,ecg,blood pressure,and body posture information,and can be through wireless communication module to transmit the data to data receiving module is connected to the PC.The main work of this paper is as follows:(1)Analyze the functional requirements of the system to determine the overall structure of the system.Based on the overall structure of the system,the detection principle of various physiological signals and posture detection are explained and select the detection scheme used in this paper,including the use of infrared sensor to temperature measurement,Blood oxygen saturation was measured by Photoplehysmography(PPG),respiration was measured by impedance method,and blood pressure was measured by Electrocardiogram(ECG)combined with PPG signal.(2)Determine the overall hardware structure of the system,clarify the functions of each module,design the hardware circuit of each module of the wearable physiological parameters and posture detection system,and complete the schematic diagram and PCB drawing.It includes temperature detection module,heart rate and blood oxygen saturation detection module,respiratory and ecg detection module,nine-axis motion sensor module,USART to USB module,microcontroller module,power module and so on.(3)The software design of the system is mainly to write the driver program of each module to realize the function of each module.For the attitude solution,an attitude solution method based on extended Kalman filter is proposed.Finally,design a test plan to verify the function of the system.The experimental results show that the system is stable,reliable and easy to operate.It can meet the requirements of physiological parameters and posture detection and realize continuous and reliable health monitoring.