Abstract
Manual sorting of mixed metallic and non-metallic components is slow and error-prone. Automated conveyor systems with metal detection improve throughput and consistency in industrial packaging, scrap sorting and quality-control lines.
This project develops a PLC Based Sorting System Using Metal Detection. Objects move on a belt conveyor past an inductive proximity sensor. When a metallic object is detected, the PLC starts a timed sequence and energises a reject actuator (pneumatic cylinder or motorised diverter) to push the object into a reject bin. Non-metallic objects continue to the accept chute. Key subsystems include conveyor drive, metal sensor interfacing, ladder-logic sequencing, reject actuation and status indication. The system demonstrates industrial sorting automation suitable for academic evaluation.
It is an excellent final-year project for Electrical, Electronics, Mechatronics and Industrial Automation Engineering students, combining sensors, PLC programming and practical material handling.
