基于三电极体系的血氧检测系统的设计

发布时间：2018-11-24 11:04

【摘要】：目前普遍采用血氧浓度作为衡量人体的状态以及监测患者身体状况的一项重要参数。当前常用的血氧检测仪存在测量准确度不够,测量误差大等问题,因此设计一套检测准确度高的血氧测试系统存在很重要的现实意义。本文基于三电极体系测量原理,设计了一套血氧测试系统。血氧检测仪的工作原理是依照在一定范围内电流值和血氧含量存在线性关系,血氧浓度就可以通过测量对应的电流值计算出来。使用三电极体系进行检测血液中血氧的含量,三个电极分别是工作电极、参考电极和对电极。随着微处理器的逐步发展,嵌入式技术越来越完善,现代医疗电子得到很大的发展。本文描述的是基于当下迅猛发展的嵌入式技术研发的一款能够对人体血氧进行检测并实时上传显示和存储的血氧检测系统。本文首先阐述了目前血氧检测相关领域的发展现状,接着介绍了目前检测血氧的几种基本手段,然后详细介绍了三电极血氧检测的原理和具体实现方法。本系统以ARM Cortex-M4为核心处理器,搭载μC/OSII嵌入式操作系统,以基于LabWindows/CVI软件平台的PC机作为上位机进行管理。通过LabWindows/CVI的强大功能实现数据接收、参数显示等功能。本文还给出了硬件接口的驱动程序的实现,最终实现检测的血氧浓度在核心处理器的控制下通过以太网传输到PC端。
[Abstract]:At present, blood oxygen concentration is widely used as an important parameter to measure the state of human body and to monitor the patient's condition. The current commonly used blood oxygen detector has some problems, such as insufficient accuracy and large measurement error. Therefore, it is very important to design a set of blood oxygen measurement system with high detection accuracy. Based on the principle of three-electrode system, a blood oxygen measurement system is designed in this paper. The working principle of the blood oxygen detector is that there is a linear relationship between the current value and the blood oxygen content in a certain range, and the blood oxygen concentration can be calculated by measuring the corresponding current value. The content of blood oxygen in blood was measured by three-electrode system. The three electrodes were working electrode, reference electrode and opposite electrode. With the gradual development of microprocessor, embedded technology is becoming more and more perfect, and modern medical electronics has been greatly developed. This paper describes a blood oxygen detection system based on the rapid development of embedded technology, which can detect human blood oxygen and upload it to display and store it in real time. In this paper, the current development of blood oxygen detection is introduced, then several basic methods of blood oxygen detection are introduced, and then the principle and realization method of three electrodes blood oxygen detection are introduced in detail. This system takes ARM Cortex-M4 as the core processor, carries the 渭 C/OSII embedded operating system, and uses the PC computer based on the LabWindows/CVI software platform as the host computer to manage. Through the powerful function of LabWindows/CVI to achieve data reception, parameter display and other functions. The realization of the driver of the hardware interface is also given in this paper. Finally, the detected oxygen concentration is transmitted to the PC via Ethernet under the control of the core processor.
【学位授予单位】：烟台大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TH77;TP274

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