Design and implementation of DMES based on RFID

DMES (Discrete MES) is difficult to realize as process changes frequently, workshop environment is complicated, and data collection is difficult. RFID and 433 MHZ wireless communications have been used to set up the hardware platform for the design of DMES. With the object-oriented programming language, planning services procedure, communication procedure, management procedure, and interface procedure have been developed. The DMES system can meet the requirements of real-time data collecting, real-time monitoring, and job-shop scheme of automatic scheduling, paperless operation, and the timely transfer of the materials. In representation of the large number of enterprises application, this DMES based on RFID achieves good results in reducing the WIP, shortening the production cycle, reducing paper and achieving better indicators.