Design of Automatic Control System for Seed Dryer Based on PLC

This paper takes the seed dryer as the research object, through the analysis of the seed drying process, determines the drying temperature and seed humidity as the key control parameters in the process of seed drying, and analyzes the basic composition and working process of PLC, and uses PLC to carry out the automatic control system of seed dryer. According to the PLC, the system can automatically control the temperature according to the PLC.