Research On Measurement And Control System And Energy Fine Management Of A Coating Workshop Of Agricultural Machinery

Agricultural machinery,as an important auxiliary tool in contemporary agricultural production,is one of the important means to improve the efficiency of agricultural production and plays a vital role in the development of agricultural modernization.With the implementation of China’s policy on Intelligent Manufacturing 2025 and the release of German Industry 4.0,the importance of manufacturing industry in various countries has changed,and the technological requirements for agricultural machinery manufacturing have become higher and higher.At the same time,the aging of the population becoming more and more serious,the labor force of agricultural production is decreasing year by year.There is a more urgent need for the rapid development of agricultural mechanization,and there is a major gap in agricultural machinery production.Coating production line as one of the four major processes of agricultural machinery production has also been developed rapidly in recent years.The requirements for its process are increasing day by day,low cost,high reliability of automatic measurement and control system and refined energy management mode have gradually become a new direction of modern manufacturing industry development.Therefore,this paper combines the process principle of agricultural machinery painting production line,measurement and control technology and materials.Based on the concept of networking technology,the measurement and control system and energy refinement management system of agricultural machinery painting workshop are studied and designed to meet the increasing demand of production management.Firstly,based on the construction of agricultural machinery painting production line,the development status of painting production line and industrial automation technology in recent years was analyzed.The technological principle of painting production line was deeply studied,and the core control requirements were comprehensively understood.Aiming at the main processes of agricultural machinery painting,such as pretreatment electrophoresis,drying,strong cooling,spraying and exhaust gas treatment,an automatic measurement and control system of painting production line based on PLC and PROFINET field bus was developed.The system mainly includes the upper computer monitoring system and the control network of each subsystem,thus realizing the distributed control and centralized management of the whole painting production line.Secondly,based on the design framework and workshop control requirements,the selection of related control point tables and hardware and software is carried out.Point table subsystem carries out point statistics.The hardware selection mainly includes the controllers of each subsystem,slave stations for distributed control,lower computer display screen,frequency converter for fan and pump frequency conversion control,and various field sensors,such as temperature and pressure,etc.The related program is designed by using portal,and the upper computer interface is developed by using Siemens WinCC software,including the connection of PLC,the management of variables,the landing interface,the production of the main process interface and the final dynamic effect of the object.Then,in response to the national call for energy saving and consumption reduction,energy consumption management in painting workshop was studied,and an energy refinement management system based on Internet of Things was designed.The refined management of energy consumption in main energy consumption areas,equipment and related teams is studied.The energy saving strategy and energy consumption diagnosis of workshop are analyzed and studied.It plays an important role in energy saving and consumption reduction for enterprises and in improving production efficiency.Finally,the installation and debugging are carried out,including the installation of various controllers,slave stations,frequency converters and field sensors.After the installation,the communication between the controllers and the debugging operation of the host computer,database and PID are carried out.The debugging and running results show that the system runs well,which verifies the rationality of the system design.