【作者】 李迪；

【导师】 杜旭；

【作者基本信息】 华中科技大学 ， 通信与信息系统， 2012， 硕士

【摘要】 利用氢气浓度变化来预报地震已成为国内外地震前兆预测的研究热点之一，目前测量氢气浓度常用的热导池气相色谱仪存在灵敏度低、操作复杂、不可连续测量、价格昂贵等缺陷。针对这一问题，本文研究并实现了一个分布式痕量氢测量分析系统，该系统与已有的痕量氢测量化学微传感器相结合，实现分布于各地的地下氢气浓度变化的实时监测和统一数据管理，并为用户提供各种交互式的可视化数据分析方法。本文首先研究分布式痕量氢的测量控制方法，设计各测量终端与传感器的通信协议，实现通过串口控制传感器以三种不同的模式进行测量，并设计和实现各终端的网络服务器，通过对不同服务器程序设计范式和Flash网络通信机制的研究比较，为用户提供高质量、高可靠性的远程访问和控制。然后，本文提出一种分布式数据传输与同步备份策略，该策略融合时间触发和事件触发两种方式，保证各终端与中心数据服务器的数据实时同步，为分布式系统提供了数据可靠性保障。最后，在各分布式终端采集的数据基础上，本文设计了交互式远程分析法等三种数据分析与可视化显示方法，期望给地震预测提供有价值的信息。经测试和实际应用表明，该分布式系统能够有效工作，灵敏、易操作，可长时间连续测量，并为地震氢气前兆预测提供了有一定价值的参考数据和信息。更多还原

【Abstract】 Using the hydrogen concentration changes to predict earthquake has become ahotspot at home and abroad, there are many defects in the instruments used to measure theconcentration of hydrogen, such as low sensitivity, complicated operation, continuousmeasurement and high prices.Aiming at this problem, this paper designs and implements a distributed TraceHydrogen Analysis System. Combined with the chemical micro-sensors, the systemrealizes real-time monitoring and unified management of changes in hydrogenconcentration around. The system also provides users with a variety of interactive visualdata analysis methods.This paper studies a method of control and measurement of distributedtrace hydrogen, designs the communication protocol between the measuring terminal andthe chemical micro-sensors, achieve to control the chemical micro-sensors to measure inthree different modes. In order to provide users with high-quality and high-reliabilityremote access and control, the paper designs and implements various network terminalserver through the study and comparison of different server programming paradigms andFlash mechanisms for network communication. Then the paper proposed an effectivestrategy for transmission and simultaneous backup of distributed data. Aiming atproviding data reliability protection for the distributed system, the strategy usestime-triggered and event-triggered to ensure real-time data synchronization between thecentral data server and each measuring terminals. At last, expect to provide valuableinformation for earthquake prediction, the paper designs three methods of data analysisand visual display based on data collected by distributed terminals.This system can effectively measure for a long time, it is sensitive, easy to operateand has provided some valuable data and information for earthquake prediction, which hasbeen proved by the test and practice.更多还原