本文選題：室內(nèi)空氣監(jiān)測 + 無線傳感網(wǎng)絡��； 參考：《西南交通大學》2017年碩士論文

【摘要】：改革開放以來,我國經(jīng)濟得到快速、持續(xù)、穩(wěn)定的發(fā)展,人們的生活水平有了大幅提升,居住環(huán)境得到明顯改善。但隨著經(jīng)濟的發(fā)展,工業(yè)規(guī)模不斷的擴大,室內(nèi)空氣品質(zhì)日益惡劣。目前室內(nèi)空氣品質(zhì)監(jiān)測產(chǎn)品仍有需要專業(yè)人員操作、價格昂貴、功能單一的問題,本文重點研究具有多項監(jiān)測指標及空氣品質(zhì)評價的室內(nèi)空氣品質(zhì)無線監(jiān)測系統(tǒng),為人們擁有良好的室內(nèi)空氣提供保障。本文對室內(nèi)空氣品質(zhì)監(jiān)測及評價系統(tǒng)的功能需求進行分析,提出了系統(tǒng)總體設計方案。系統(tǒng)具備三大部分:采集終端、無線通信系統(tǒng)及監(jiān)測中心。本文基于RT-Thread和STM32設計了采集終端。RT-Thread實時嵌入式操作系統(tǒng)具有良好開放性、實時性。本文完成了 RT-Thread向STM32F446的移植,實現(xiàn)了 RT-Thread在STM32F446硬件平臺上的穩(wěn)定運行。采集終端能夠監(jiān)測室內(nèi)多項空氣指標,包括:甲醛、二氧化碳、PM2.5及溫濕度,并向監(jiān)測中心實時發(fā)送。本文設計了 Wi-Fi無線通信系統(tǒng)。采集終端與監(jiān)測中心通過Wi-Fi無線通信系統(tǒng)進行數(shù)據(jù)交換。文中研究了傳統(tǒng)灰色關聯(lián)分析法,灰色關聯(lián)分析法對樣本要求較低,極少出現(xiàn)分析結果與實際不符的情況。本文在該算法基礎上,參考相關文獻對傳統(tǒng)灰色關聯(lián)分析法去量綱化和分辨率計算步驟進行了一定的改進。對兩種算法編程實現(xiàn)并模擬分析后,得出結論是:改進的灰色關聯(lián)分析法運算量更少,可靠性更高。本文設計了計算機終端監(jiān)測中心軟件,具備實時接收采集終端監(jiān)測數(shù)據(jù),實時顯示,即時報警,歷史查詢等功能。使用改進后的灰色關聯(lián)分析法設計并實現(xiàn)了一種空氣品質(zhì)評價方法,該評價方法采用C#與MATLAB聯(lián)合編程方式實現(xiàn)。系統(tǒng)測試表明:RT-Thread實時線程操作系統(tǒng)能夠穩(wěn)定運行;采集終端各模塊工作狀態(tài)正常;Wi-Fi無線通信系統(tǒng)工作良好;監(jiān)測中心基本功能正常。
[Abstract]:Since the reform and opening up, China's economy has been rapid, sustained and stable development, people's living standards have been greatly improved, living environment has been significantly improved. However, with the development of economy and the expansion of industrial scale, indoor air quality is becoming worse and worse. At present, indoor air quality monitoring products still need professional operation, high price and single function. This paper focuses on the wireless monitoring system of indoor air quality with many monitoring indexes and air quality evaluation. To provide protection for people to have good indoor air. In this paper, the functional requirements of indoor air quality monitoring and evaluation system are analyzed, and the overall design scheme of the system is put forward. The system has three parts: acquisition terminal, wireless communication system and monitoring center. Based on RT-Thread and STM32, the real-time embedded operating system of .RT-Thread is designed. In this paper, the transplant of RT-Thread to STM32F446 is completed, and the stable operation of RT-Thread on STM32F446 hardware platform is realized. The collection terminal can monitor indoor air indexes, including formaldehyde, carbon dioxide PM2.5 and temperature and humidity, and send them to the monitoring center in real time. Wi-Fi wireless communication system is designed in this paper. The data exchange between the acquisition terminal and the monitoring center is carried out through the Wi-Fi wireless communication system. In this paper, the traditional grey relational analysis method is studied. On the basis of this algorithm, the traditional grey correlation analysis method is improved in terms of dimensionalization and resolution calculation. After the two algorithms are programmed and simulated, it is concluded that the improved grey correlation analysis method has less operation and higher reliability. In this paper, the software of computer terminal monitoring center is designed, which has the functions of receiving and collecting terminal monitoring data in real time, displaying it in real time, alerting immediately, querying history and so on. An air quality evaluation method is designed and implemented by using the improved grey relational analysis method. The evaluation method is implemented by C # and MATLAB combined programming. The system tests show that the real-time threading operating system can run stably, the modules of the acquisition terminal work normally and the Wi-Fi wireless communication system works well, and the basic function of the monitoring center is normal.
【學位授予單位】：西南交通大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TP274

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