In order to make the grain evenly heated during the drying process,avoid the problem of poor grain quality due to uneven drying.In this paper,a PLC-based uniform heated drying oven for grain is designed.The system mainly adopts Siemens S7-200 series PLC as the controller,combined with STEP7 programming software for program design and debugging.Realize fast and accurate detection and control of grain temperature,so that grain drying to achieve uniform heating effect,can effectively improve grain quality and economic benefits.The design also has the advantages of strong control ability,high reliability,etc.,and has a wide range of application prospects and promotion value.
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