Measurement And Control System Design Of Intelligent Greenhouse Nutritional Liquid Dripirrigation Device

In recent years, people’s cropping pattern and planting concept has been significantlychanged. Along with the development of information technology, facility agricultural technologyas the representative of greenhouse technology has become an important part in themodernization of agricultural production. Because of mature technology, short crop breedingcycle and meeting the requirement in yield and quality, soilless cultivation technology hasbecome an important direction in facility agriculture.As a core element in soilless cultivation techniques, the yield and quality of greenhouse islargely decided on nutrient liquid preparation and irrigation management of soilless cultivation.With timely, appropriate greenhouse crop irrigation, crops can be a good growth anddevelopment. In the past, the preparation and irrigation of nutrition liquid relied on manual work.Obviously, it’s difficult to meet the requirement in large-scale crop production. Since theintelligent greenhouse has been gradually extended in our country, this requires that there mustbe suitable greenhouse control equipments to provide practical solutions for intelligentgreenhouse. Foreign products are rarely using in China, as its high cost, hard to maintain, and nottaking into account of our basic national condition. For these situations, we provide an intelligentgreenhouse nutrient liquid preparation and irrigation device as the solution. Also, we completethe hardware and software design. As meeting the agricultural requirement in liquid supplementand preparation, this device has high cost performance, easy maintenance, high stability anddurability.In this paper, the measurement and control system of intelligent greenhouse nutritionalliquid drip irrigation device is studied and developed. Using80C196KB microcontroller as thecore control unit, and as the nutrient liquid concentration and acidity of the control parameters,we design the signal conditioning circuit, main control circuit and so on. Also, we deeply designinteractive interfaces with LCD module and integrate the various interfaces as the form of acatalog. In the last, it implements the desired functions. The manufacturing cost of this device isnot high and the using scope is broad, so it’s more appropriate to the basic national condition ofour greenhouse production. This device is bound to have very broad prospects in the new roundof development in agricultural industrialization.