The Design of Control Node of Temperature in Greenhouse based on the Fuzzy Control Technology

摘要

Temperature is an important environmental parameter in greenhouse, how to control the temperature accurately with a unified method is an important task in greenhouse automatic control system. This paper introduces the design of the fuzzy control node of temperature in greenhouse based on a MCS196 Micro-computer and the component of the greenhouse control system. The fuzzy control principle and method are presented. The hardware structure and the fuzzy control rules and output table are expatiated. The diagram of the node hardware function is also presented. By practical work in many greenhouses, the results present it runs well, the temperature control node has many advantages, such as convenient installation, easy debugging, and it has strong robustness. So, it has a better practicality and deserves to have more widespread application.