嵌入式远程医疗监护系统终端的设计与实现

发布时间：2018-05-14 18:08

本文选题：远程医疗 + 生理参数　；参考：《武汉理工大学》2012年硕士论文

【摘要】：近年来老龄化问题越来越严重,年老体弱者经常需要体检或长期监护,而就医难就医贵耽误了很多人疾病的最佳治疗期。计算机和网络快速发展,使远程医疗成为可能,各跨国企业和研究机构争相开展了对远程医疗的研究,并真正使其应用到老百姓的生活中。我们在本课题中设计了远程医疗监护系统,主要给年老体弱者提供生理参数监护上的方便,系统体积小、功耗低、便于携带,适合长期在家里监护生理参数,把数据通过网络传送到医生工作站,减免看病难上的很多不必要的麻烦。本课题研究的远程医疗监护系统终端是整个系统的一部分,监护仪以ARM9开发板为核心,Linux操作系统为软件开发平台,包括血压模块、血氧模块、呼吸模块和心电模块采集血压、血氧、脉率、呼吸、心电五个生理参数,在论文中分别讨论了硬件和软件的实现,最后进行统一调试。硬件方面自己设计了血压值采集模拟电路,利用气压力传感器把气压信号转换成电压信号,经过放大滤波提取模拟信号送处理器做模数转换,主要用到的芯片是AD620AR和TL064。电源模块采用LM系列芯片为整个系统提供了+12V、-12V、+5V和+3.3V电压,为系统各个模块提供电源。呼吸模块采用胸腹式拉力传感器、对信号进行调整送入处理器进行模数转换。心电模块我们设计了威尔逊网络电路和到连选择电路提供7个不同的心电导联。软件方面设计了血压、呼吸模块的数据分析方法提取具体的血压和呼吸率数值,血氧模块对串口读到的数值进行解析得到血氧数值。此外,设计了ADC驱动模块,能够实现同时4个通道的采样,实现各个模块数据的模数转换。整个软件系统采用模块化结构,对每个模块设计了统一的软件接口,便于管理和增减模块功能。最后对各个模块进行了调试,多次测试结果与传统的测量数据进行对比,调整软硬件上的缺陷,把误差降低到标准以内。到目前为止,整个系统联调完成,系统运行稳定,能准确的测试到血压值、血氧饱和度值、呼吸率和脉率能显示心电图,基本达到预期要求,后续工作会对血氧模块的硬件和核心处理器做进一步的设计,并考虑增加生理模块。
[Abstract]:In recent years, the problem of aging is becoming more and more serious. The elderly and frail often need medical examination or long-term supervision, and the difficulty of seeking medical treatment delays the best treatment period of many people's diseases. With the rapid development of computer and network, telemedicine has become possible. Multinational enterprises and research institutions have been competing to carry out research on telemedicine and make it truly applied to the lives of ordinary people. In this paper, we designed a remote medical monitoring system, which mainly provides physiological parameter monitoring convenience for the aged and frail. The system is small in size, low in power consumption, easy to carry, and suitable for long-term monitoring of physiological parameters at home. Send the data to the doctor's workstation via the network, relieving many unnecessary troubles from the difficulty of seeing a doctor. The terminal of telemedicine monitoring system studied in this paper is a part of the whole system. The monitor takes ARM9 development board as the core and Linux operating system as the software development platform, including blood pressure module, blood oxygen module, respiration module and ECG module to collect blood pressure. Five physiological parameters of blood oxygen pulse rate respiration and electrocardiogram are discussed in this paper. The realization of hardware and software are discussed respectively and finally unified debugging is carried out. In the aspect of hardware, the analog circuit of blood pressure value acquisition is designed, the pressure signal is converted into voltage signal by gas pressure sensor, and the analog signal is extracted by amplifying and filtering to send it to the processor for analog-to-digital conversion. The main chips used are AD620AR and TL064. The power module uses LM series chips to provide 12V -12V, 5V and 3.3V voltages for the whole system, and supplies power to each module of the system. The respiratory module uses the chest and abdomen tension sensor to adjust the signal and send it to the processor for A-D conversion. We designed Wilson network circuit and connected selection circuit to provide 7 different ECG leads. The data analysis method of blood pressure and respiration module is designed to extract the specific values of blood pressure and respiration rate in software, and the value of blood oxygen is obtained by analyzing the values read by serial port in the blood oxygen module. In addition, the ADC driver module is designed, which can realize the sampling of four channels at the same time, and realize the analog-to-digital conversion of the data of each module. The whole software system adopts modular structure, and designs a unified software interface for each module, which is convenient to manage, add and subtract module functions. Finally, each module is debugged, the test results are compared with the traditional measurement data, the defects of software and hardware are adjusted, and the error is reduced to the standard. So far, the whole system has been completed, and the system is running stably. It can accurately test blood pressure, oxygen saturation, respiratory rate and pulse rate to show the ECG, basically meeting the expected requirements. Further work will be done to further design the hardware and core processor of the oxygen module and to consider adding physiological modules.
【学位授予单位】：武汉理工大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TP368.1

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