需要金幣:1000 個金幣 | 資料包括:完整論文 | ||
轉換比率:金額 X 10=金幣數量, 例100元=1000金幣 | 論文字數:12585 | ||
折扣與優惠:團購最低可5折優惠 - 了解詳情 | 論文格式:Word格式(*.doc) |
摘要:水位的控制和監測在農業和工業生產中的應用越來越多。與此同時,生活中的水位控制也越來越重要。然而隨著社會的不斷發展,人們生活質量也隨著不斷提高,對用水的需求不斷增長,傳統的水位控制方法單純依靠軟件編程實現,能耗大、不方便維護、操作復雜等缺陷逐漸暴露,已經滿足不了人們的實際需求。 本文在傳統的以西門子S7-200系列PLC為控制核心的基礎上,加入PID閉環控制方法,對水塔水位實現綜合控制。在傳統控制系統中,加入液位傳感器和控制模塊。實現原理是液位傳感器將測量的實際的液位高度傳遞給PLC,PLC通過A/D轉換,將液位值轉化為數字量與設定值進行比較,通過差值控制水泵和閥門,進行進水或出水,同時設有報警電路,當水位高于或低于某個設定值時,觸動報警器,控制模塊用來顯示整個過程和整體控制。本文很好的將PLC控制與PID控制方法相結合,形成了一種更好的水位控制方案。 關鍵詞 水位控制;西門子S7-200;液位傳感器;控制模塊;設定值
Abstract:Control and monitoring of water level is more and more applied in the agricultural and industrial production. At the same time, the water level control is becoming more and more important in life. However, with the fast development of society, the quality of people life rise ceaselessly, the demand for water is also constantly improve, the traditional method of water level control relying on software programming implementation start to show it’s shortage, large energy consumption and inconvenient maintenance, operating complex defects exposed gradually, people is not satisfied with it for the actual needs . Based on the traditional with the Siemens series S7-200 PLC as the core, on the basis of joining PID closed loop control method, the water tower water level to achieve integrated control. Adding sensors and control modules to traditional control system. Principle was A liquid level sensor to measure the actual level of transmitted to PLC, PLC through A/D conversion, liquid level value could be converted to digital quantity comparing with set point, through differential control pumps and valves, water or water, at the same time equipped with alarm circuit, when the water level above or below a set point, alarm, and control module used for displaying the was whole process and the overall control. It is very good in this paper that PLC control combined with PID control method has formed a better water level control scheme. Keywords Water level Control Siemens S7-200 Sensor Control Module Set Point |