本文選題：MSP4302F247 + GPS授時��； 參考：《中南民族大學》2015年碩士論文

【摘要】：隨著我國城鎮(zhèn)化進程的快速發(fā)展,水資源的需求將持續(xù)增長。然而城鎮(zhèn)地下管網(wǎng)漏水現(xiàn)象嚴峻,由于供水網(wǎng)絡龐大,漏水點難以及時準確發(fā)現(xiàn),對單個漏點定位耗費巨大人力物力。研制先進可靠的供水管網(wǎng)實時監(jiān)測定位系統(tǒng)幫助管網(wǎng)維護人員系統(tǒng)監(jiān)測管網(wǎng)運行情況,可快速確定漏點,及時進行維護,對于遏制水資源浪費具有重大意義。本文針對城鎮(zhèn)供水系統(tǒng)的特點,以管網(wǎng)的實時監(jiān)測和漏點定位為目標,對管道監(jiān)測節(jié)點和在線監(jiān)測系統(tǒng)進行了設計,主要研究內容如下:(1)針對泄漏聲信號的基本特性,采用相關時延定位算法實現(xiàn)泄漏點定位,設計實現(xiàn)了系統(tǒng)的漏點監(jiān)測節(jié)點硬件模塊,利用MSP4302F247單片機作為嵌入式定位節(jié)點微處理器,采用GPS授時技術提高傳感器采集同步精度,以基于ZigBee的無線傳輸技術將監(jiān)測到的數(shù)據(jù)傳輸?shù)綌?shù)據(jù)中心。同時考慮到節(jié)點單片機有限的存儲空間和運行資源與大量數(shù)據(jù)采集任務之間的矛盾,對監(jiān)測節(jié)點進行了低噪聲低功耗的軟件優(yōu)化。(2)設計了后臺在線監(jiān)測系統(tǒng)的數(shù)據(jù)處理軟件。通過基于LMS的自適應時延估計算法的仿真,計算管線兩端傳感器采集到的泄露信號間的時間延遲,得出管道漏口定位情況,并將處理結果以WEBGIS的形式進行圖像化呈現(xiàn),實現(xiàn)了城市供水管網(wǎng)實時監(jiān)測定位。仿真實驗證明,本文設計的供水管網(wǎng)實時監(jiān)測定位系統(tǒng)檢測及時、定位準確、功耗超低、操作便捷、智能程度高,具有較高的實際應用價值。最后,對本文主要完成的工作和對本系統(tǒng)尚存在的問題進行了總結,并對未來的研究工作進行了展望。
[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.
【學位授予單位】：中南民族大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TU991.33
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本文編號：1797010