多生理参数传感系统的集成与实现

发布时间：2018-02-26 17:28

本文关键词： 便携式心电图血氧饱和度计步器　出处：《哈尔滨工业大学》2012年硕士论文　论文类型：学位论文

【摘要】：医疗与保健一直以来都是人们关心的主题，在追求高质量生活的现代社会中，人们越发清醒地认识到健康的重要性。然而，现在的人们大多处于亚健康状态。应社会的需求，便携式医疗监护仪器正在逐渐地走进人们的家庭生活。这种医疗监护仪也迎合了人们早发现早治疗的心理，并且促进了人们加强身体锻炼。便携式医疗设备已经不是个新名词，，它正处在高速发展的状态中。上市的医疗监护产品，能够满足人们的医疗监护需求，但是由于受到成本、体积以及易操作性等条件的制约，并没有大幅度地被人们所接受。除此之外，这些产品的使用环境约束了设备的便携性。外加一些辅助监护的附件，这更增加了使用者的烦恼。在不失测量精度的前提下，如何使得医疗监护设备真正达到其便携性、多功能性以及稳定性，这将成为人们进一步努力研究的方向。本论文在这一研究方向上做出了相关设计，所设计的仪器是一种软、硬件一体化多功能便携式医疗监护设备，其测量参数主要包括心电图（ECG）、光电容积脉搏波（PPG）、血氧饱和度（SpO2）、体表温度以及人体动作信号（加速度信号）等。该监护仪不受测量场地限制，体积小巧，成本低廉，并具有较高的稳定性。本论文的系统设计主要分为两个部分，硬件功能模块搭建和微处理器软件处理。硬件方面，首先是电源模块，既可以外接电源，也可以内接电池。其次是功能模块，包括心电采集模块、脉搏采集模块、体表温度采集模块、人体动作信号采集模块。最后是信号处理模块，包括显示和传输。论文根据有用信号频谱设计滤波器、放大器以及陷波器等，并且为硬件接口设计驱动程序，包括DS18B20、ADXL345、液晶屏等。软件方面，根据两路脉搏的交直流信号，利用朗伯-比尔公式算出人体的血氧饱和度；根据人体加速度信号，利用最小均方误差法削弱乃至消除人体移动时对系统带来的运动伪迹；根据人体加速度信号，使用动态阈值和滑动窗等技术，设计一款计步器，分析出人体运动时所走的步数。
[Abstract]:Medical care and health care have always been the subject of concern. In a modern society that pursues a high quality of life, people are increasingly aware of the importance of health. However, most people nowadays are in a state of sub-health. Portable medical monitoring devices are gradually entering people's family life. This medical monitor caters to early discovery of early treatment and promotes physical exercise. Portable medical devices are no longer a new term. It is in a state of rapid development. The marketed medical monitoring products can meet the needs of people, but due to the cost, volume and ease of operation and other conditions, Besides, the use environment of these products restricts the portability of the device, and some auxiliary monitoring accessories add to the trouble of the user. Without losing the accuracy of the measurement, How to make the medical monitoring equipment achieve its portability, versatility and stability will become the direction of further research. This paper has made the related design in this research direction, the instrument designed is a kind of soft, Hardware integration multifunctional portable medical monitoring equipment, The parameters include ECG, PPG, SPO _ 2, body surface temperature and acceleration signal, etc. The monitor is small, compact and low cost. And it has high stability. The system design of this paper is mainly divided into two parts, hardware functional module building and microprocessor software processing. Hardware, first is the power module, can be connected to the external power supply, but also can be connected to the battery. Secondly, the function module. Including ECG acquisition module, pulse acquisition module, body surface temperature acquisition module, human body action signal acquisition module. Finally, the signal processing module, including display and transmission. The amplifier and notch filter are designed for the hardware interface, including DS18B20ADXL345, LCD screen, etc. In software, according to the AC / DC signal of two pulse channels, the oxygen saturation of human body is calculated by the formula of Lamber-Bill; According to the acceleration signal of human body, the minimum mean square error method is used to weaken and even eliminate the motion artifacts brought by the human body moving, and according to the acceleration signal of the human body, the dynamic threshold and sliding window techniques are used to design a pedometer. Analyze the number of steps the human body takes when it moves.
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：R318.6

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