Research Of Intelligent Sensing Technology For Discrete Manufacturing Process Based On RFID

With the development of internet of manufacturing things,RFID technology has been gradually applied in discrete manufacturing workshop.And RFID provides a new technical means for manufacturing process management.Aiming at the application requirements of RFID in discrete manufacturing process,this paper studied an intelligent sensing technology for discrete manufacturing process based on RFID,which broke through at RFID network planning technology and RFID complex event processing technology.The demands of high performance and low cost for RFID network in discrete manufacturing workshop were satisfied.The purpose of extracting valuable events from mass RFID data of discrete manufacturing process was achieved.These researches have vital guiding significance for improving the level of discrete manufacturing workshop informatization and enhancing the real-time and accuracy of workshop management decision-making.The main work was as follows:Firstly,aiming at the demands of the intelligent sensing for discrete manufacturing process,the architecture and physical topology of intelligent sensing system were constructed.In addition,the key technologies of intelligent sensing for discrete manufacturing process were studied,which include RFID network planning technology and RFID complex event processing technology.Secondly,based on the discrete deployment space and RFID propagation with metal barriers,a 3D RFID multi-objective deployment optimization model was established.An improved PSO algorithm was designed.Then,an experiment was conducted to verify the effectiveness and the superiority of the proposed method.Thirdly,to effectively utilize the RFID data generated by the reasonable RFID network,RFID complex events in discrete manufacturing workshop were analyzed.A multi-level RFID complex event processing framework was set up.Then,data cleaning technology was researched,and an improved Petri net model was built to perform complex events processing.The detection of RFID complex events in discrete manufacturing workshop was realized.Finally,based on the theoretical researches,an intelligent sensing prototype system for discrete manufacturing process was developed and validated.The RFID hardware platform for an aerospace product assembly workshop was constructed.And the main functions of this system were verified.