城市供水管网实时监测定位系统研究

发布时间：2018-04-24 14:23

  本文选题：MSP4302F247 + GPS授时　； 参考：《中南民族大学》2015年硕士论文

【摘要】：随着我国城镇化进程的快速发展,水资源的需求将持续增长。然而城镇地下管网漏水现象严峻,由于供水网络庞大,漏水点难以及时准确发现,对单个漏点定位耗费巨大人力物力。研制先进可靠的供水管网实时监测定位系统帮助管网维护人员系统监测管网运行情况,可快速确定漏点,及时进行维护,对于遏制水资源浪费具有重大意义。本文针对城镇供水系统的特点,以管网的实时监测和漏点定位为目标,对管道监测节点和在线监测系统进行了设计,主要研究内容如下:(1)针对泄漏声信号的基本特性,采用相关时延定位算法实现泄漏点定位,设计实现了系统的漏点监测节点硬件模块,利用MSP4302F247单片机作为嵌入式定位节点微处理器,采用GPS授时技术提高传感器采集同步精度,以基于ZigBee的无线传输技术将监测到的数据传输到数据中心。同时考虑到节点单片机有限的存储空间和运行资源与大量数据采集任务之间的矛盾,对监测节点进行了低噪声低功耗的软件优化。(2)设计了后台在线监测系统的数据处理软件。通过基于LMS的自适应时延估计算法的仿真,计算管线两端传感器采集到的泄露信号间的时间延迟,得出管道漏口定位情况,并将处理结果以WEBGIS的形式进行图像化呈现,实现了城市供水管网实时监测定位。仿真实验证明,本文设计的供水管网实时监测定位系统检测及时、定位准确、功耗超低、操作便捷、智能程度高,具有较高的实际应用价值。最后,对本文主要完成的工作和对本系统尚存在的问题进行了总结,并对未来的研究工作进行了展望。
[Abstract]:With the rapid development of urbanization in China, the demand for water resources will continue to grow. However, the phenomenon of water leakage in urban underground pipe network is severe. Because of the huge water supply network, it is difficult to find the leakage point in time and accurately, and it consumes huge manpower and material resources to locate a single leak point. The development of an advanced and reliable real-time monitoring and positioning system for water supply networks helps the maintainers to monitor the operation of the pipe networks. It can quickly determine the leakage points and maintain them in time. It is of great significance to curb the waste of water resources. Aiming at the characteristics of urban water supply system, this paper designs the pipeline monitoring node and on-line monitoring system aiming at the real-time monitoring and leak location of pipeline network. The main research contents are as follows: 1) aiming at the basic characteristics of leakage sound signal, The leak location is realized by using the correlation time delay localization algorithm. The hardware module of the leak monitoring node is designed and implemented. The MSP4302F247 microcontroller is used as the embedded positioning node microprocessor and the GPS timing technology is used to improve the synchronous precision of the sensor collection. The monitored data is transmitted to the data center by wireless transmission technology based on ZigBee. At the same time, considering the contradiction between limited storage space and running resources of node microcontroller and a large number of data acquisition tasks, a low noise and low power consumption software optimization of the monitoring node is carried out.) the data processing software of the background on-line monitoring system is designed. Through the simulation of the adaptive time delay estimation algorithm based on LMS, the time delay between the leakage signals collected by the sensor at both ends of the pipeline is calculated, and the location of the leakage port of the pipeline is obtained, and the processing results are presented in the form of WEBGIS. The real-time monitoring and positioning of urban water supply network is realized. The simulation results show that the real-time monitoring and positioning system designed in this paper has the advantages of timely detection, accurate positioning, ultra-low power consumption, convenient operation, high intelligence, and high practical application value. Finally, the main work of this paper and the existing problems of the system are summarized, and the future research work is prospected.
【学位授予单位】：中南民族大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TU991.33
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本文编号：1797010