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Abstract

With the rapid development of e-commerce, the sorting system are widely used in the logistics industry. However, the traditional manual sorting and express delivery have the characteristics of low sorting efficiency, high labor cost and high sorting error rate, which will result in an increased cost of express sorting. Accordingly, in this current work, an automatic and intelligent express sorting control system was introduced based on programmable logic controller (PLC) techniques. The express sorting system is composed of a Siemens S7-1214CPU, a touch screen, a scanning gun and other components, and a combination of the conveyor belts and sensors was used to determine the direction of express action. The express sorting function and the counting function of express were achieved using the simulation and the self-increasing module, respectively. The realization of the functions and each subsystem provide a theoretical support for the design and optimization of the automatic sorting system.