摘要:智能灌溉是發展高效節能農業和園藝的主要方法。由于我國淡水資源的缺乏，因此要實現按需求、按時期、按灌溉量進行噴灌，既可以節省水資源，也可以節省勞動力，具有很強的實用性。這對于貫徹黨中央的“建設節能型社會”的號召非常有利，有較好的經濟效益和社會效益。

　　　該系統能在無人值守時自動噴灌，在雨天和土壤水分充足時自動停止噴灌。該系統對節約水資源和人力很有意義。從影響作物生長環境入手，分析并確定是否灌溉的決定性因素，如：風速、濕度、PH、陰雨天等因素，以PLC作為控制器，設計一套自動灌溉的控制系統。此系統在滿足非雨天、風速不高、濕度較低，再根據PH的大小來確定灌溉什么溶液，當達到土壤平衡狀態的時候，自動停止噴灌，實現自動灌溉，達到節能環保的作用。

關鍵詞：PLC 智能灌溉 自動化 傳感器 變頻器

ABSTRACT:Intelligent irrigation is the main method of developing energy efficient agriculture and horticulture. Due to the lack of freshwater resources in China, therefore to realize the demand, according to the times, spray by irrigation amount, not only can save water resources, but also can save labor force, has a strong practical. To implement the Party Central Committee "the construction of energy-saving society" appeal is very favorable, with good economic benefit and social benefit.

　　　To be punctual automatic sprinkling value in one of the system, automatic sprinkler irrigation in the rain and soil moisture is sufficient. This system is of significance for saving water resources and human. This paper starts from the influence of the crop growth environment, the decisive factor, analysis and to determine whether such as: wind speed, humidity, irrigation, PH, rainy days, with PLC as controller, design a set of automatic irrigation control system. Automatic irrigation, achieve energy-saving and environmental protection.

Keywords: PLC; Smart Irrigation; Automation; Sensor; Inverter