摘要
随着生活水平的不断提高,人们对家庭保健和健康检查越来越重视。传统的医疗服务由于受到地域的限制,仅能为本地人群提供服务,远程医疗借助现代通讯技术和计算机技术为远程病人提供预防、诊断、治疗等一系列服务,因此越来越受到人们的重视。生物医学信号的无线传输属于远程医疗的重要组成部分,通过医学信号的无线传输既可以实现远程监护,即远程检测病人的各种生理参数(心电、脑电、血氧、血糖等)指导病人治疗,也可以实现远程会诊,即把病人的文本信息和图像信息无线传输到医院供医生诊断,医生再把诊断结果回传完成会诊。
本文设计了一款生物医学信号无线传输系统,完成远程监护和远程会诊两大功能。该系统主要包括远程传输终端和医院上位机两部分组成,其中远程传输终端的软硬件实现是本文的重点和关键。
介绍了远程传输终端的硬件结构和软件体系的总体设计方案。远程传输终端的硬件平台以SAMSUNG公司的ARM内核的32位嵌入式微处理器S3C2440A为控制核心,外围扩展华为GTM900-C的GPRS模块、RS-232串口、USB接口、SD卡存储模块等模块,文中对各硬件模块的设计实现做了详尽的论述。在硬件平台的基础上,移植嵌入式操作系统Windows Embedded CE6.0,对WinCE6.0定制和移植过程做了详细论述。
利用Visual Studio2005开发了基于WinCE6.0的嵌入式应用程序和上位机软件。详细介绍了利用GPRS模块无线传输数据及发送短信,使用SQL Server CE3.0进行数据存储。建立了远程监护及远程会诊两大功能的人机操作界面。介绍了上位机软件使用IOCP完成端口管理Socket与GPRS模块之间通讯,使用RDA技术实现SQL Server 2000与SQL Server CE3.0之间远程同步。
对远程监护模式和远程会诊模式进行了功能测试和分析,对GPRS数据无线传输的速度和稳定性进行了测试,经测试,生物医学信号无线传输系统达到预期设计要求。
本课题所研制的生物医学信号无线传输系统,具有操作简单,界面友好,可扩展性和灵活性高等特点,能够实现实时远程监护和远程会诊.另外,系统采用.嵌入式系统设计,具有较高的可靠性和实时性。
With the continuous improvement of living standard, people are paying more and more attention to health care and physical examination. Traditional medical service can only serve the local people due to geographical restrictions, while telemedicine can provide prophylaxis, diagnosis, treatment and other services for remote patient through modern communication and computer technology, so telemedicine has attracted increasing attention nowadays. Wireless transmission of biomedical signals is an essential part of telemedicine. Through it we can not only accomplish remote monitoring, which means guiding the patient's treatment by remote detection of their physiological parameters (ECG, EEG, blood oxygen, glucose, etc.), but also can complete remote consultation, that is, the patient transmitting his text and image information to doctors for medical diagnosis, and doctors transmitting the result to the patient afterwards.
This dissertation presents a wireless transmission system of bio-medical signal which can complete two major functions, remote monitoring and remote consultation. The system consists of a remote transmission terminal and a host computer. The implementation of the hardware and software of the remote transmission terminal is the major thrust of this paper.
Firstly, the dissertation introduces the general design of the hardware and software of the remote transmission terminal. The hardware platform of remote transmission terminal is centered on Samsung's embedded microprocessor S3C2440A of 32- bit ARM, around which expanded with modules such as Huawei's GTM900-C GPRS module, RS-232 serial port, USB interface, SD card storage module and so on. The design and implementation of the said modules are elaborately discussed in the article. The operating system of Windows Embedded CE6.0 is transplanted to the terminal based on the hardware platform. The customization and transplantation procedure of WinCE6.0 is also introduced in detail.
Secondly, both the embedded application based on WinCE6.0 and the PC software are developed by means of Visual Studio 2005. This paper has particularly introduces the wireless transmission of data and messages by use of GPRS module and the data storage by use of SQL Server CE3.0 as well as the human-machine interface of remote monitoring and remote consultation. In addition, the use of IOCP completion port to complete communication between Socket and GPRS modules and the use of RDA technology to realize remote synchronization between SQL Server 2000 and SQL Server CE3.0 are also specifically explained.
Finally, the functional test and analysis of remote monitoring mode and remote consultation mode along with the test of the performance of GPRS wireless transmission are discussed. The wireless transmission system of bio-medical signal has satisfied the desired requirements for design by test.
The wireless transmission system of biomedical signal developed in this project possesses the merits of simple to operate, user-friendly interface as well as high scalability and flexibility. It can accomplish real-time remote monitoring and remote consultation. Besides, the adoption of the embedded system design equips it with high reliability and real-time capacity.
引文
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