远程监护系统的数据记录与传输技术研究

电子通信论文编号:TX053       论文字数:30157,页数:58

目录
第一章 绪 论  1
1.1 课题研究背景及其来源   1
1.1.1 国外远程医疗的发展历史与近况   1
1.1.2 我国远程医疗的进展与现状  3
1.2 远程监护系统的发展趋势  4
1.3 本课题研究涉及的关键性技术  5
1.3.1 MODEM技术   5
1.3.2 USB技术   5
1.3.3 闪速存储器磁盘技术   6
1.4 论文的主要研究工作  6
第二章 远程监护系统的总体设计  8
2.1远程监护系统构架分析   8
2.2监护终端微处理器的选择  9
2.3监护终端设备硬件总体设计  11
2.4远程监护系统软件整体构架   12
2.4.1监护终端设备固件程序结构  12
2.5监护终端系统硬件实现  14
2.6本章小结   15
第三章 远程监护系统的MODEM传输技术研究  16
3.1调制解调器通用指令集AT命令  16
3.2本系统的中的通讯协议  16
3.2.1数据流格式    17
3.2.2命令类数据包的具体定义  18
3.2.3其它类型的包  19
3.3 MODEM数据传输的实现  19
3.3.1 MODEM传输的硬件实现  19
3.3.2 MODEM传输的软件实现   22
3.4 MODEM传输实验结果  23
3.5本章小结   24
第四章 远程监护终端的USB传输技术  25
4.1 USB实现的关键技术   25
4.1.1 USB总线的构成和通讯结构   25
4.1.2 USB设备的枚举过程  26
4.2 USB功能的硬件实现  27
4.3 USB功能的软件实现   30
4.4本章小结   35
第五章 远程监护终端的存储传输技术研究   36
5.1 U盘关键技术研究  36
5.1.1 Bulk- Only 传输规范与RBC命令在系统中的实现  36
5.1.2在闪速存储器上实现FAT16文件系统  40
5.2 闪速存储器的坏块处理技术  45
5.3终端设备U盘化的测试结果   48
5.4本章小结  50
第六章 结论与展望  51
致 谢   53
参考文献  54

摘  要

随着计算机和信息技术的进步，远程医疗得到了快速发展，这一新的医疗模式在世界范围引起了人们的广泛关注。在这一领域我国起步较晚，不过也在某些方面取得了一定的成果。但总体上来讲，由于我国互联网的覆盖面十分的有限，同时基于我国人民总体生活水平不高的特点，很多人仍然无法享受远程医疗的服务。当前市场上的远程医疗产品中有些是单一依靠互联网为传输媒介，架设成本较高，难以大范围推广；有些虽然以覆盖面很广的电话线为传输媒介，但是系统太过简单，同时数据存储量过小，对于有用的临床诊断信息提供能力不足。
本文从我国国情和当前市场上远程医疗产品存在的不足出发，针对传输技术问题、数据存储问题等几个方面进行了较为深入的探讨和研究，依此为基础，设计出了一款家用远程多生理参数监护系统。系统具有心电、血氧饱和度、体温三种生理参数的检测、记录和传输功能。
系统采用我国通讯覆盖面最广的电话线为主要传输媒介，采用56k高速MODEM，配合自定义通讯协议，来完成患者多生理参数数据的实时和批量传输任务；同时以PC机作为终端系统的延伸部分，将互联网通讯作为本系统的另一种传输方式。这样给用户以更大的选择空间，根据不同的家庭和现实状况选择合适的传输方式。
在与PC机的连接上，引入USB传输技术，提高终端设备同PC机之间的数据传输效率，简化操作。同时在数据存储上，采用128MB大容量闪速存储器，增强终端设备的数据存储能力。为了更加便于用户的操作使用，提高系统利用率，以USB传输功能为基础，在终端系统中实现U盘功能，可以方便的通过PC机对存储在终端设备上的文件进行相关操作。另外，针对闪速存储器存在坏块的问题，采用了地址映射技术，将坏块排除在应用程序之外，简化了编程，提高程序的可移植性。
本文中的家用多参数远程监护系统弥补了当前市场上一些同类产品的不足，通讯方式灵活，操作使用简单，适合不同类型家庭和患者的使用。

【关键词】：远程医疗，生理信号，电话线，通用串行总线，地址映射

Abstract

With the advance of the technologies of computer and information, telemedicine has been developed quickly. This new medical pattern has been attracting more and more people’s attention in the world. The research in this field was been done later in China than in others. But some good results have been achieved so far. Up to now, generally speaking, in China, due to the limits of the internet covering area and relatively lower living standard, many people can not enjoy the telemedicine service. In Chinese market, one kind of this products is based only on the internet as transmit medium. It can not widely applied by the ordinary people. Another kind is based on telephone line which is covering almost the whole country. The drawback of this kind of products is the poor function and the limited storage, which can not supply enough clinical information.
Aiming at the problems described above, this thesis has discussed deeply the technologies of transmission, storage and so on. Based on the research results, a family used multi-physiological-signal monitoring system was developed. It can realize sampling, recording, and transmitting for electrocardiogram(ECG), oxygen saturation and respiration.
The system utilizes the telephone line, which is covering almost the whole country, as communication media. A 56k high speed modem and an own protocol is employed for  real-time mass data transmission. At the same time, personal computer is used as the system’s enhanced part to extend its application. The internet data exchange plays the second way of communication of the system. In order to simplify operation of terminal device, Universal Serial Bus(USB) mass storage function has been realized in it. Users can conveniently deal with the recorded data files of terminal device in personal computer as their wills. Additionally, because the flash memory on the terminal device exists some bad blocks, we make use of the concept of address mapping technique to shield the bad block for software development, which simplifies programming and makes the whole firmware more transplantable.
The system in this thesis overcomes some shortages of nowadays telemedicine monitoring system in the market. It has flexible communication ways and simple operation. It can be used for different users.

Keywords: Telemedicine, Physiological Signal, Telephone Line, Universal Serial Bus, Address Mapping
Thesis Type: Applied Fundamental