基于GPRS技術(shù)的pH值自動遙測系統(tǒng)設(shè)計(jì)

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摘要 水污染問題日益嚴(yán)重，已經(jīng)嚴(yán)重制約我國經(jīng)濟(jì)和社會的進(jìn)一步發(fā)展。提高污水處理能力，加強(qiáng)對污水的監(jiān)測和管理，在環(huán)保工作中有重要作用。采用先進(jìn)技術(shù)對污水進(jìn)行實(shí)時(shí)連續(xù)自動檢測，保證污水的達(dá)標(biāo)排放，降低污水處理費(fèi)用，提高污水處理的效率，對我國解決水環(huán)境污染問題具有重要意義。
論文是基于GPRS技術(shù)的pH值自動遙測系統(tǒng)的設(shè)計(jì)，其功能是對污水的pH值進(jìn)行實(shí)時(shí)連續(xù)自動檢測，自動采樣，并將采樣得到的數(shù)據(jù)發(fā)送至監(jiān)測中心進(jìn)行處理。系統(tǒng)包括pH檢測裝置、GPRS無線通信模塊及遠(yuǎn)端數(shù)據(jù)監(jiān)測中心等。利用高性能LM3S6911單片機(jī)對檢測裝置測量得到的pH數(shù)據(jù)進(jìn)行處理，并通過單片機(jī)串口控制GPRS通信模塊，經(jīng)由GPRS網(wǎng)絡(luò)將數(shù)據(jù)傳輸?shù)竭h(yuǎn)端的監(jiān)測中心。監(jiān)測中心軟件在Visual C++6.0環(huán)境下進(jìn)行編程，通過建立Socket實(shí)現(xiàn)對數(shù)據(jù)參數(shù)的監(jiān)聽、接收以及發(fā)送等處理，若收到的pH數(shù)據(jù)超出設(shè)定閾值，則自動進(jìn)行聲音報(bào)警，從而更好的實(shí)現(xiàn)pH數(shù)據(jù)實(shí)時(shí)采集、遠(yuǎn)程監(jiān)測功能。
通過調(diào)試和運(yùn)行，系統(tǒng)實(shí)現(xiàn)數(shù)據(jù)的即時(shí)采集、發(fā)送和接收，達(dá)到預(yù)期目標(biāo)。

關(guān)鍵詞：LM3S6911，pH值，GPRS

Design of Automatic Telemetering System of pH Based on GPRS
Abstract Water pollution is increasingly serious in our country at the moment and it has nearly restricted the further development of economic and society. What we have to do is to enhance efficiency of coping with sewage and to strengthen the scrutinize and management of sewage, which plays an essential role in the environmental protection field. Making the best use of advanced science and technology is to realize the real-time continuously automatic detection of sewage, so as to ensure the sewage discharged meet the national standard, reduce the cost of sewage disposal and improve the efficiency of wastewater treatment. All of this is of great significance to solve the problem of environmental water pollution in China. The designed system in this paper is to perform automatic telemetering of pH based on GPRS. Its function is to detect the real-time pH of sewage continuously and automatically, then to take a sample automatically and send the sample data to the monitoring center for further processing. The system is mainly composed of pH detection device, GPRS wireless communication module and the remote data monitoring center. We utilize the LM3S6911, a high-performance single-chip microcomputer, to process the pH data which is accurately measured by detecting device, and utilize the serial port control GPRS module of the single-chip microcomputer to transmit data to remote monitoring center through GPRS network. The monitoring center’s programming environment built is in Visual C++ 6.0. Through the establishment of the Socket, the system achieves the function of monitoring, sending and receiving the data parameters. If the pH data received exceeds the threshold setted, the system will automaticallyalarm with buzzing, thereby it can realize the functions of taking samplebetter about the real-time pH data and remote monitoring .
Through debugging and running of this system, it finally performs the work of sending and receiving the real-time data, and achieves the expected goal.
Key words：LM3S6911，pH value，GPRS

目 錄
第一章 緒論 5
1.1 課題研究的背景及意義 5
1.2 國內(nèi)外研究現(xiàn)狀 5
1.2.1 pH檢測研究現(xiàn)狀 5
1.2.2 GPRS網(wǎng)絡(luò)研究現(xiàn)狀及發(fā)展趨勢 8
1.3 論文研究的主要內(nèi)容及論文組織結(jié)構(gòu) 9
1.3.1 論文研究的主要內(nèi)容 9
1.3.2 論文的組織結(jié)構(gòu) 10
1.4 本章小結(jié) 10
第二章 系統(tǒng)整體設(shè)計(jì) 11
2.1 系統(tǒng)方案的設(shè)計(jì)目標(biāo) 11
2.2 系統(tǒng)方案的結(jié)構(gòu)設(shè)計(jì) 11
2.3 pH值傳感器 12
2.3.1 pH值傳感器的選型 12
2.3.2 pH值測量原理 13
2.4 微處理器 16
2.4.1 微處理器的選擇 16
2.4.2 單片機(jī)LM3S6911的特點(diǎn) 16
2.5 無線通訊網(wǎng)絡(luò) 18
2.6 本章小結(jié) 19
第三章 系統(tǒng)硬件設(shè)計(jì) 20
3.1系統(tǒng)硬件總體框圖 20
3.2 基于LM3S6911的硬件電路設(shè)計(jì) 21
3.3 pH值檢測模塊 23
3.4 通信模塊接口電路設(shè)計(jì) 24
3.5 本章小結(jié) 26
第四章 系統(tǒng)軟件設(shè)計(jì) 27
4.1 系統(tǒng)下位機(jī)軟件設(shè)計(jì) 27
4.1.1 主程序及中斷子程序設(shè)計(jì) 28
4.1.2 數(shù)據(jù)采樣程序設(shè)計(jì) 30
4.1.3 GPRS模塊參數(shù)配置 31
4.2 系統(tǒng)上位機(jī)軟件設(shè)計(jì) 33
4.2.1 基于WinSock實(shí)現(xiàn)系統(tǒng)遠(yuǎn)程網(wǎng)絡(luò)傳輸 34
4.2.2 上位機(jī)顯示界面 38
4.3 本章小結(jié) 41
第五章 系統(tǒng)的調(diào)試和運(yùn)行 42
5.1 測試過程 42
5.2 測試過程中遇到的題以及解決方案 45
5.3 本章小結(jié) 45
第六章 總結(jié)與展望 46
6.1 工作總結(jié) 46
6.2 展望 46
致謝 47
參考文獻(xiàn) 48