| With the improvement of living standards,people are paying more and more attention to the management of physical health,and hope to get timely warnings about unhealthy status from monitoring physiological signals of body.Traditional clinical physiological information collection devices are expensive and not easy to carry,devices such as smartwatches on the market are easy to carry but cannot detect certain important physiological signals,such as galvanic skin response,temperature,humidity,etc.Based on the above factors,this paper uses the STM32 core processor as the controller to design a wearable multi-channel physiological information collection device,which can monitor a variety of physiological information in real-time,such as skin galvanic,heart rate,temperature,humidity,wrist posture,etc.These physiological information data can be stored locally in the collection device’s memory or stored through the Bluetooth chip of the collection device to a smartphone or personal computer.The bottom layer of the device has been ported with the Harmony lightweight operating system,and kernel objects such as message queues,semaphores,and threads have been applied to improve the device’s stability and efficiency,conforming to the current trend of independent controllability and independent intellectual property rights.On this basis,driver programs for different functional modules have been developed to achieve the collection,storage,and data communication of physiological information such as skin galvanic,heart rate,temperature,humidity,and wrist posture.Subsequently,an application program was designed to receive,display,and save the physiological information data collected by the device on the PC side.Finally,through some experiments and data processing analysis,the collection device can recognize the body’s health information and preliminary verification was conducted on the application of the collection device in mental health information research. |
