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

【摘要】：隨著我國(guó)城鎮(zhèn)化進(jìn)程的快速發(fā)展,水資源的需求將持續(xù)增長(zhǎng)。然而城鎮(zhèn)地下管網(wǎng)漏水現(xiàn)象嚴(yán)峻,由于供水網(wǎng)絡(luò)龐大,漏水點(diǎn)難以及時(shí)準(zhǔn)確發(fā)現(xiàn),對(duì)單個(gè)漏點(diǎn)定位耗費(fèi)巨大人力物力。研制先進(jìn)可靠的供水管網(wǎng)實(shí)時(shí)監(jiān)測(cè)定位系統(tǒng)幫助管網(wǎng)維護(hù)人員系統(tǒng)監(jiān)測(cè)管網(wǎng)運(yùn)行情況,可快速確定漏點(diǎn),及時(shí)進(jìn)行維護(hù),對(duì)于遏制水資源浪費(fèi)具有重大意義。本文針對(duì)城鎮(zhèn)供水系統(tǒng)的特點(diǎn),以管網(wǎng)的實(shí)時(shí)監(jiān)測(cè)和漏點(diǎn)定位為目標(biāo),對(duì)管道監(jiān)測(cè)節(jié)點(diǎn)和在線監(jiān)測(cè)系統(tǒng)進(jìn)行了設(shè)計(jì),主要研究?jī)?nèi)容如下:(1)針對(duì)泄漏聲信號(hào)的基本特性,采用相關(guān)時(shí)延定位算法實(shí)現(xiàn)泄漏點(diǎn)定位,設(shè)計(jì)實(shí)現(xiàn)了系統(tǒng)的漏點(diǎn)監(jiān)測(cè)節(jié)點(diǎn)硬件模塊,利用MSP4302F247單片機(jī)作為嵌入式定位節(jié)點(diǎn)微處理器,采用GPS授時(shí)技術(shù)提高傳感器采集同步精度,以基于ZigBee的無(wú)線傳輸技術(shù)將監(jiān)測(cè)到的數(shù)據(jù)傳輸?shù)綌?shù)據(jù)中心。同時(shí)考慮到節(jié)點(diǎn)單片機(jī)有限的存儲(chǔ)空間和運(yùn)行資源與大量數(shù)據(jù)采集任務(wù)之間的矛盾,對(duì)監(jiān)測(cè)節(jié)點(diǎn)進(jìn)行了低噪聲低功耗的軟件優(yōu)化。(2)設(shè)計(jì)了后臺(tái)在線監(jiān)測(cè)系統(tǒng)的數(shù)據(jù)處理軟件。通過(guò)基于LMS的自適應(yīng)時(shí)延估計(jì)算法的仿真,計(jì)算管線兩端傳感器采集到的泄露信號(hào)間的時(shí)間延遲,得出管道漏口定位情況,并將處理結(jié)果以WEBGIS的形式進(jìn)行圖像化呈現(xiàn),實(shí)現(xiàn)了城市供水管網(wǎng)實(shí)時(shí)監(jiān)測(cè)定位。仿真實(shí)驗(yàn)證明,本文設(shè)計(jì)的供水管網(wǎng)實(shí)時(shí)監(jiān)測(cè)定位系統(tǒng)檢測(cè)及時(shí)、定位準(zhǔn)確、功耗超低、操作便捷、智能程度高,具有較高的實(shí)際應(yīng)用價(jià)值。最后,對(duì)本文主要完成的工作和對(duì)本系統(tǒng)尚存在的問(wèn)題進(jìn)行了總結(jié),并對(duì)未來(lái)的研究工作進(jìn)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(xué)位授予單位】：中南民族大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TU991.33
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本文編號(hào)：1797010