Abstract:
In this thesis, researcher highlighted the grain dryer control systems using Programmable Logic Controllers (PLCs), which increased their efficiency and easy of handling. It also raised safety and security standards. Which in recent decades has received great attention and interest. There is no doubt to turn a blind eye to the value of this research when it worked to solve one of the issues that concern the field of grain quality of production and reduce the cost, which may open the door for the future of many research in this area. The work of this system helps to eliminate human intervention and increase productivity in the system. Using limit switches, mixer, elevator, heat system and some sensors that were then connected with programmable logic controllers to enable the desired process according to the ladder program written to control the process of grain system. The system work depends on fill the grain in tank and heats it to expel moisture, then cool grain to be sure the temperature will not to reach the point roasting. Then place in the storage tank to use.
