现代化农业：PLC控制下谷物烘干机自动化技术研究

ars, with the advancement of technology, PLC technology has been widely applied in various industrial automation fields. The application of PLC in the automatic control of grain dryers has gradually gained popularity due to its superior control performance, shorter cycle times, and cost-efficiency compared to traditional relay logic control systems. Grain dryers are essential equipment in the agricultural sector, used for drying crops such as grains. Traditionally, these dryers have been controlled using relay logic control systems, which are prone to high failure rates and long maintenance cycles. As technology has progressed, the limitations of these control systems have become more apparent, leading to a shift towards PLC-based control systems. PLC, as the core controller of grain dryers, offers powerful functionality in industrial process control. It has become the preferred industrial control product in the international market, outperforming traditional relay control systems. This thesis focuses on the application of PLC in the automatic control of grain dryers, discussing the design of the PLC control system, ladder logic programming, and process flow of grain dryers. In conclusion, PLC technology has revolutionized the automation of grain dryers, providing enhanced control performance and efficiency. Its widespread adoption in various industrial applications underscores its importance in modern automation systems. The integration of PLC in grain dryers signifies a shift towards more advanced control systems, improving overall productivity and reliability in agricultural processes.