基于光电容积脉搏波描记法的智能婴儿脚环设计

发布时间：2018-04-20 10:47

本文选题：光电容积脉搏波 + 心率传感器　；参考：《河南大学》2016年硕士论文

【摘要】：随着科技的进步,医学的发展,医疗与电子的相结合的类产品越来越受人们的青睐。医疗器械也日新月异,一改以前体积庞大、应用复杂、专业性强等弊端,发展成为现今便携式、数字式、非专业化的医疗监护及治疗设备。从世界医疗电子器械发展的总体水平来看,欧美日本等发达国家的起步较早,技术比较成熟,发展水平也较高。我国起步比较晚,科技水平还有待提高,因此在医疗电子方面仍有较为广阔的空间。本文基于TI公司CC2541系列的低功耗蓝牙内置的8051MCU进行对婴儿的身体功能参数的检测,检测参数主要包括心率、血氧饱和度和体温三项。光电容积脉搏描记法是借助光电的手段在人体组织中检测血液容积变换的一种无创检测方法。当一定波长的光束照射到人体的皮肤表面时,未被吸收的散射光返回皮肤表面,光电接收器把光信号转化成电信号,再经过放大、滤波及AD转换等电路的处理,最终将反映心率和血氧饱和度的数字信号传送给8051MCU处理,并通过CC2541芯片的射频模块传输。体温测量则是通过接触式高精度、线性的NTC热敏电阻传感器来测量婴儿的温度。除了具体的体征参数检测功能外,还把检测到的数据传到云服务器上,通过大量的数据的分析和专家的指导及时、准确的了解被监护婴儿的身体状况并给出一些合理建议。
[Abstract]:With the progress of science and technology and the development of medicine, the combination of medical and electronic products is more and more popular. Medical devices are changing with each passing day. They have developed into portable, digital, non-professional medical monitoring and treatment equipment. From the overall level of the development of medical electronic devices in the world, the developed countries, such as Europe, America and Japan, started earlier, the technology is relatively mature, and the level of development is also relatively high. Our country starts relatively late, the level of science and technology still needs to be improved, so there is still broad space in medical electronics. In this paper, the body function parameters of infants are measured based on the low power Bluetooth built-in 8051MCU of TI's CC2541 series. The parameters mainly include heart rate, oxygen saturation and body temperature. Photoelectric volumetric pulse tracing is a non-invasive method for detecting blood volume change in human tissues by means of photoelectricity. When the light beam of a certain wavelength shines on the skin surface of the human body, the unabsorbed scattering light returns to the skin surface, and the photoelectric receiver converts the light signal into an electric signal, which is then processed by amplifying, filtering and AD conversion circuits. Finally, the digital signal reflecting heart rate and oxygen saturation is transmitted to 8051MCU and transmitted through RF module of CC2541 chip. Body temperature is measured by a contact high-precision, linear NTC thermistor sensor. In addition to the specific physical sign parameter detection function, the detected data is transmitted to the cloud server. Through the analysis of a large number of data and the guidance of the expert, we can accurately understand the body condition of the monitored baby and give some reasonable suggestions.
【学位授予单位】：河南大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：R318.6;TN925

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