Design Of Control Terminals For Automated Production Lines

With the promotion and application of the traditional manufacturing execution system,discrete manufacturing has initially realized the integration of industrialization and informationization,which has greatly improved the level of intelligent automation in the production process.However,in the process of information transformation of the actual automated production line,there were still many difficulties,such as various equipment brands,a wide variety of internal protocols,lack of specific data interfaces,or insufficient number of interfaces,etc.As a result,the production line cannot interact with the upper-level control system in time to generate data isolation had to become “data isolation".At the same time,the level of intelligence in dedicated production equipment is limited,which reduces the work efficiency of the entire production line real-time monitoring system.In response to the above problems,this paper proposes the application of the Internet of Things and embedded technology to design a new control terminal for automated production lines to achieve reliable integration of equipment into the system.The main contents of this paper are as follows:(1)It analyzes and summarizes the problems associated with the integration of automated stand-alone equipment into the production line real-time monitoring system,proposes a compatible solution that uses the control terminal as a link,and solves the problem of “data isolation” existing on the automated production line.(2)By adopting the double-layer architecture mode of the core board-backplane,the hardware structure of the control terminal is divided as a whole,and the related circuit and power supply design is completed.The core board is used as the main control center,and the Cortex-A9 chip is used as the core to realize the control operation of the terminal.As the common module,the backplane mainly realizes data collection,transmission,and communication interface expansion.(3)Taking Linux as the kernel and the Android system as the operating system,the building of an embedded software development environment,the design of drivers and application software are completed.Each function is modularized in the form of a class library,so that the control terminal has the functions of data acquisition,wireless transmission,quality chain control,process capability index analysis,production task acquisition,adjustment,and query.(4)Aiming at the balanced scheduling problem for automated production lines,the mathematical model of the balance problem was established.The genetic annealing algorithm(GASA)was improved and the effectiveness and feasibility of the algorithm were verified.Finally,the algorithm is verified by simulation and experimental results.(5)The functional test of control terminal is carried out on assembly detection line of the EPB brake clamp assembly.It is tested that the access of terminal control has achieved a high fusion of automation,intelligent and efficient of auto parts production line,the rate of finished products reached to 99%,the data exchange time is shortened in one second,the production efficiency and data transmission has been significantly improved.