Automation project for the fast-food production process using a discrete event system

Abstract

The proposed automation project aims to enhance production efficiency in a fast-food environment, specifically in the manufacturing of hamburgers, french fries, and chicken nuggets. Using the Discrete Event Systems (DES) methodology, the approach employs a physical architecture that incorporates detection, monitoring, control, and actuation devices, all connected to a Programmable Logic Controller (PLC). The IEC 61131-3 standard guides the programming of PLCs, employing the Ladder Diagram (LD) language to translate Petri net models into the system's control logic. System behavior modeling is performed through the Production Flow Schema (PFS) methodology and Petri nets, providing a clear visual representation of subprocesses, including the production of each item and necessary interlocks. Control validation is conducted through simulations using PIPE 4.3 software, allowing adjustments before conversion to LD. Expected results encompass a substantial improvement in operational efficiency. Automation seeks to ensure product quality consistency, error reduction, and increased production capacity. By minimizing human intervention, the system also aims to optimize production, benefiting both the company and the customer experience. The project development follows a five step methodology, ranging from defining the physical bringing significant improvements in efficiency and production quality in a fast-food environment architecture to commissioning Inputs/Outputs in the real system. Petri Net transcription into programming language is accomplished through isomorphism, facilitating the practic al implementation of control. In summary, the integration of DES, PFS methodology, Petri net modeling, and programming according to the IEC 61131-3 standard offers a robust approach to the development of complex automation systems, bringing significant improvements in efficiency and production quality in a fast-food environment.