基于單片機恒壓供水系統(tǒng)的設(shè)計(本科畢業(yè)論文).doc
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基于單片機恒壓供水系統(tǒng)的設(shè)計(本科畢業(yè)論文),目 錄中文摘要1中文摘要21 緒論31.1 課題研究的目的與意義31.2 國內(nèi)外發(fā)展的狀況31.3 變頻供水系統(tǒng)應(yīng)用范圍51.4 恒壓供水的實現(xiàn)52 變頻調(diào)速系統(tǒng)能耗分析72.1 供水系統(tǒng)分析72.2 變頻調(diào)速恒壓供水工況與能耗機理分析83 系統(tǒng)結(jié)構(gòu)與設(shè)備選型113.1 系統(tǒng)...
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基于單片機恒壓供水系統(tǒng)的設(shè)計(本科畢業(yè)論文)
目 錄
中文摘要 1
中文摘要 2
1 緒論 3
1.1 課題研究的目的與意義 3
1.2 國內(nèi)外發(fā)展的狀況 3
1.3 變頻供水系統(tǒng)應(yīng)用范圍 5
1.4 恒壓供水的實現(xiàn) 5
2 變頻調(diào)速系統(tǒng)能耗分析 7
2.1 供水系統(tǒng)分析 7
2.2 變頻調(diào)速恒壓供水工況與能耗機理分析 8
3 系統(tǒng)結(jié)構(gòu)與設(shè)備選型 11
3.1 系統(tǒng)總體設(shè)計 11
3.2 變頻調(diào)速 11
3.3 單片機 16
3.4 控制算法 17
4 系統(tǒng)硬件設(shè)計 20
4.1 系統(tǒng)工作過程說明 20
4.2 變頻器部分硬件設(shè)計 21
4.3 單片機部分硬件設(shè)計 23
5 系統(tǒng)軟件設(shè)計 29
5.1 主程序流程 29
5.2 繼電器動作控制流程 30
5.3 PID控制流程 31
結(jié)論 33
致謝 34
參考文獻 35
附錄1 36
附錄2 37
單片機恒壓供水系統(tǒng)的設(shè)計
摘 要：建設(shè)節(jié)約型社會，合理開發(fā)、節(jié)約利用和有效保護水資源是一項艱巨任務(wù)。根據(jù)居民用水時間集中，用水量變化較大的特點，因此居民原供水系統(tǒng)存在了耗能高，可靠性低，水資源浪費嚴重，管網(wǎng)系統(tǒng)待完善的問題。提出利用壓力反饋，PID控制，配以變頻器、單片機、壓力傳感器等，根據(jù)管網(wǎng)的壓力，通過變頻器控制水泵的轉(zhuǎn)速，從而使管網(wǎng)中的壓力始終保持在合適的范圍。從而解決因樓層太高而導(dǎo)致壓力不足及小流量時能耗大的問題。
另外水泵耗電功率與電機轉(zhuǎn)速的三次方成正比關(guān)系，所以水泵調(diào)速運行的節(jié)能效果非常明顯，平均耗電量較通常供水方式節(jié)省近四成。結(jié)合使用可編程控制器，可實現(xiàn)主泵變頻，副泵軟啟動，具有短路保護、過流保護功能，工作穩(wěn)定可靠，電機的使用壽命大大延長。
關(guān)鍵字：恒壓變頻供水，單片機，差壓供水，自動控制
The Design base on MCU for pressure water supply system
Abstract：Building the conservation-oriented society, the reasonable development, saves and the effective protecting water resources is an arduous task. According to the users water used time and the water consumption changing characteristic, so the resident original water supply system has many problems. E.g. the existence cost to be high, the reliability is low, the water resources waste, and the pipe network system need consummation. Through the way of using pressure feedback, PID control, together with the converter, microcontroller, pressure sensors, etc, according to the network management pressure, control water pump rotational speed through the inverter. So that the pressure in the pipe network is always maintained at a appropriate scope. Through this way, we solve the problem that the high floor case inadequate pressure and energy consumption high when the flow is low.
Moreover the water pump consumes the electric power and the electric machinery rotational speed is proportional three cubed the relations, therefore the water pump velocity modulation gets an obvious energy conservation effect. The average power consumption saves 40% than usual water supply method. Combination of relays, it can achieve the main pump frequency adjust, the deputy pump soft start, with the function of short circuit protection and over current protection. It is stable and reliable further more greatly extend the life of the motor.
Key words: Constant pressure frequency conversion water supply, SCM, differential pressure water supply, automatic control
目 錄
中文摘要 1
中文摘要 2
1 緒論 3
1.1 課題研究的目的與意義 3
1.2 國內(nèi)外發(fā)展的狀況 3
1.3 變頻供水系統(tǒng)應(yīng)用范圍 5
1.4 恒壓供水的實現(xiàn) 5
2 變頻調(diào)速系統(tǒng)能耗分析 7
2.1 供水系統(tǒng)分析 7
2.2 變頻調(diào)速恒壓供水工況與能耗機理分析 8
3 系統(tǒng)結(jié)構(gòu)與設(shè)備選型 11
3.1 系統(tǒng)總體設(shè)計 11
3.2 變頻調(diào)速 11
3.3 單片機 16
3.4 控制算法 17
4 系統(tǒng)硬件設(shè)計 20
4.1 系統(tǒng)工作過程說明 20
4.2 變頻器部分硬件設(shè)計 21
4.3 單片機部分硬件設(shè)計 23
5 系統(tǒng)軟件設(shè)計 29
5.1 主程序流程 29
5.2 繼電器動作控制流程 30
5.3 PID控制流程 31
結(jié)論 33
致謝 34
參考文獻 35
附錄1 36
附錄2 37
單片機恒壓供水系統(tǒng)的設(shè)計
摘 要：建設(shè)節(jié)約型社會，合理開發(fā)、節(jié)約利用和有效保護水資源是一項艱巨任務(wù)。根據(jù)居民用水時間集中，用水量變化較大的特點，因此居民原供水系統(tǒng)存在了耗能高，可靠性低，水資源浪費嚴重，管網(wǎng)系統(tǒng)待完善的問題。提出利用壓力反饋，PID控制，配以變頻器、單片機、壓力傳感器等，根據(jù)管網(wǎng)的壓力，通過變頻器控制水泵的轉(zhuǎn)速，從而使管網(wǎng)中的壓力始終保持在合適的范圍。從而解決因樓層太高而導(dǎo)致壓力不足及小流量時能耗大的問題。
另外水泵耗電功率與電機轉(zhuǎn)速的三次方成正比關(guān)系，所以水泵調(diào)速運行的節(jié)能效果非常明顯，平均耗電量較通常供水方式節(jié)省近四成。結(jié)合使用可編程控制器，可實現(xiàn)主泵變頻，副泵軟啟動，具有短路保護、過流保護功能，工作穩(wěn)定可靠，電機的使用壽命大大延長。
關(guān)鍵字：恒壓變頻供水，單片機，差壓供水，自動控制
The Design base on MCU for pressure water supply system
Abstract：Building the conservation-oriented society, the reasonable development, saves and the effective protecting water resources is an arduous task. According to the users water used time and the water consumption changing characteristic, so the resident original water supply system has many problems. E.g. the existence cost to be high, the reliability is low, the water resources waste, and the pipe network system need consummation. Through the way of using pressure feedback, PID control, together with the converter, microcontroller, pressure sensors, etc, according to the network management pressure, control water pump rotational speed through the inverter. So that the pressure in the pipe network is always maintained at a appropriate scope. Through this way, we solve the problem that the high floor case inadequate pressure and energy consumption high when the flow is low.
Moreover the water pump consumes the electric power and the electric machinery rotational speed is proportional three cubed the relations, therefore the water pump velocity modulation gets an obvious energy conservation effect. The average power consumption saves 40% than usual water supply method. Combination of relays, it can achieve the main pump frequency adjust, the deputy pump soft start, with the function of short circuit protection and over current protection. It is stable and reliable further more greatly extend the life of the motor.
Key words: Constant pressure frequency conversion water supply, SCM, differential pressure water supply, automatic control
