基于有源RFID标签的反射式脉搏血氧传感系统研究

发布时间：2018-04-18 12:48

本文选题：无线传感网络 + 脉搏血氧饱和度　；参考：《天津工业大学》2017年硕士论文

【摘要】：在新的智慧医疗体系中,对人体生命体征进行实时监测是一个非常重要的环节。医学角度所关注的人体生命体征信息,如血氧饱和度和脉率,是表征人体健康程度的重要指标,实时地监测脉搏和血氧饱和度将在病情诊断和健康监护方面发挥着积极作用。RFID标签工作在860-960MHz频率范围内,阅读器和标签之间基于EPC Cl GEN2/ISO 18000-6C协议实现数据的传递。通过将传感器技术与RFID通信技术相结合,利用无线通信网络完成对脉搏血氧数据的传输,实现对人体生命体征的监测,对推动智慧医疗行业的发展有着重要的意义。本文在研究无线传感网络的脉搏血氧信号测量节点的基础上,设计了一种基于有源RFID标签的反射式脉搏血氧传感系统。系统采用双波长脉搏血氧无创检测的理论和方法,并建立了反射式脉搏血氧饱和度检测模型。由反射式脉搏血氧探测模块、数据处理模块、RFID收发模块、上位机及显示界面四个模块组成。首先反射式脉搏血氧探测模块对人体脉搏血氧光感信号进行采集、分析和处理,通过串口通信方式将数据传递给数据处理模块,数据处理模块通过SPI通信与RFID标签建立连接并将数据传递到RFID标签之中。最后RFID阅读器通过无线通信的方式读取RFID标签中的数据,并在利用C++编写的上位机显示界面中显示出来。可以实现血氧饱和度和脉搏的无创、实时、中远距离无线监测的功能。实验结果表明,系统所测血氧饱和度的最大误差为±1%,脉率的最大误差为±1.9%。表明本文所设计脉搏血氧传感系统具有良好的精确度与可靠性,在可穿戴智慧医疗等研究方向有很好的应用前景。
[Abstract]:In the new intelligent medical system, real-time monitoring of human vital signs is very important.The vital sign information, such as blood oxygen saturation and pulse rate, which is concerned by medical angle, is an important indicator of human health.Real-time monitoring of pulse and oxygen saturation will play an active role in disease diagnosis and health monitoring. RFID tags work within the frequency range of 860-960MHz. The data transfer between readers and tags is based on EPC Cl GEN2/ISO 18000-6C protocol.By combining sensor technology with RFID communication technology, using wireless communication network to complete the transmission of pulse blood oxygen data and realize the monitoring of human vital signs, it is of great significance to promote the development of intelligent medical industry.Based on the research of pulse oxygen signal measurement node in wireless sensor network, a reflective pulse oxygen sensing system based on active RFID tag is designed in this paper.The system adopts the theory and method of dual wavelength pulse oxygen noninvasive detection, and establishes a reflex pulse oxygen saturation detection model.It consists of four modules: reflection pulse oxygen detection module, data processing module and RFID transceiver module, upper computer and display interface.First of all, the reflection pulse oxygen detection module collects, analyzes and processes the human pulse oximetry signal, and transmits the data to the data processing module through serial communication.The data processing module establishes the connection with the RFID tag through the SPI communication and transfers the data to the RFID tag.Finally, the RFID reader reads the data in the RFID tag by wireless communication, and displays it in the display interface of the upper computer written by C.It can realize the function of non-invasive, real-time and long-range wireless monitoring of oxygen saturation and pulse.The experimental results show that the maximum error of oxygen saturation measured by the system is 卤1 and the maximum error of pulse rate is 卤1.9.The results show that the pulse oxygen sensing system designed in this paper has good accuracy and reliability, and has a good application prospect in wearable intelligent medicine and so on.
【学位授予单位】：天津工业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TH789;TP391.44

【参考文献】