Design And Implementation Of Noninvasive Digital Communication Medical Equipment

In the 21 st century, the level of China’s aging population is growing, it is estimated that by 2020, the number of aging population will account for one-fifth of the population. Additionally, our country is a country of vast, extremely uneven distribution of resources, especially in the Inland Northwest region, where sparsely populated, the shortage of medical resources, "a doctor difficult" has become a very prominent problem. According to media reports, these medical resources in town of remote areas are not fully utilized, many of the hospital’s medical equipment most of the time is in idle state. In response to this situation, the paper-based STM32 chip, take wireless sensor technology, medical electronics technology, optical principles and wireless communication technology, designed a portable digital communication health care equipment, designed to improve the plight and improve the quality of people’s lives.Based on the study and comparison of current oxygen saturation measurement method, the method of double-wavelength irradiation of human tissue in the present system for measuring blood oxygen saturation, and the design and implementation of interactive interface and wireless transmission module will be Finally, complete and test the entire system. This paper mainly completed the following work:(1) On the basis of in-depth analysis and investigation, combining with the status of China’s development needs, the target of medical device development is proposed based STM32 chip. After project team’s joint research and discussion we finally determine the program of the whole system, which is collecting health signals and sending to the background health center in real time to analysis by an expert physician consultation, the user is given proper health guidance.(2) the method of double-wavelength irradiation of human tissue oxygen saturation detected by the light emitting diode emits a red light and infrared light irradiating tissue alternately, the other end of the optical frequency of the transmitted light intensity sensor for detecting, collecting raw data by FIR filtering algorithm to separate the raw data for the AC and DC signal, the final analysis of the data to derive oxygen saturation.(3) ILI9341 control chip LCD screen man-machine interface design,communication interfaces and devices through FSMC main chip, characters, charactersand pictures displayed on the LCD screen, and completed the drive and SD card file system migration and implement the modules were tested.(4) ESP8266 wireless adapter module of the device’s wireless routing access functions to communicate through the serial port and the main chip device by sending AT commands to achieve the operation of the module to the serial port on the software to realize the function of wireless communication and the modules were tested.(5) software design does not use a conventional register operation, instead of using the ST Microelectronics STM32 library provides software development, which not only simplifies the work of software developers, but also improve the efficiency of development.