# RFID Based Manufacturing Process of Cloud MES
## 1 Introduction  
In the midst of globalization and ever-increasing market competition, product quality and production efficiency have always been both a bottleneck and the ultimate goal of manufacturing enterprises. Consequently, most manufacturing companies began to introduce the Manufacturing Execution System (MES), which is used in the manufacturing process. As early as the 1990s, the Advanced Manufacturing Research (AMR) Corporation of the United States officially proposed the concept of the MES system, and built a three-layer structure enterprise integration model, which pointed out the hierarchical position of MES [1] for the first time, since this system had been established in 1992. The Manufacturing Execution Systems Association (MESA) released the official definition of the MES system in 1997, andit contained an MES integration model which included 11 functions [2]. This traditional MES system is limited to tracking and documenting the transformation of specific information into finished goods, such as individual, machine, raw materials, method and the surrounding environment of a single production workshop (as proposed in the literature [3]: The MES system for agile manufacturing, the human-centered MES system in the networked manufacturing environment proposed by the literature [4]). Presently, following over more than 20 years of industrial development in a rapidly changing info-technology, such as cloud computing, big data and the Internet of Things (IoT), and with deep integration of next-generation information technology and industrialization, industrial manufacturing's new age, Industry 4.0 [5], is just around the corner. To extend the lifespan of businesses, traditional manufacturing enterprises are fully engaged in transformation and upgrading. In the last two years, from using traditional MES systems to custom improvements of MES systems in different enterprises, manufacturing companies in the production process have begun to evolve into using the cloud MES system with cloud manufacturing characteristics. [PERSON] et al. combined the characteristics of cloud manufacturing, proposed a machinetool manufacturing MES for cloud manufacturing, and studied the part-case retrieval method, by managing manufacturing resources and allocation in the cloud manufacturing environment [6]; [PERSON] et al. made a proposal for the core architecture of a cloud-based MES solution to meet the needs and challenges of the management of distributed manufacturing in a multi-company supply chain [7]; [PERSON] et al. took an industrial park with a high industrial concentration as the management objective, analyzed and discussed the construction of a cloud MES from the aspect of system design, application, operation and maintenance [8]. The future of the MES system will continue to be refined with cloud collaboration and intelligent development [9]. With the emergence of the cloud MES, the functional characteristics of the MES system have also undergone transformation. The most prominent transformation features are remote monitoring and real-time visualization. The basis for achieving these transformations and refining management objectives is based on the RFID manufacturing process's real-time tracking. RFID technology has been widely used in the manufacturing process of enterprises and has been further studied (such as in Reference [10], which involved the design of a remote monitoring system based on RFID for the internal production management of the enterprise; literature [11] studied the key technologies involved in the manufacturing execution system for a workshop-level service based on RFID; literature [12] proposed an RFID-based intelligent decision support system architecture for the production monitoring and scheduling of distributed production environments). This paper combines the cloud MES system with RFID technology to further study real-time tracking and monitoring in the manufacturing process.