The Control System Of Ingredient Feeding For Ceramic Production

This paper described the design and structure of semiautomatic control system of ingredient feeding for ceramic production. The system is renovated and developed from previous wholly manual operation systems. The system designed includes IPC high level computer,PLC low level computer,intelligent proportioning instrument,serial adapter,transducer,ingredient-weighting hopper car etc. The main structure of the system is developed based on IPC+ Ethernet + PLC and IPC+RS422+ intelligent proportioning instrumentation, which build a distributed and semi-automatic ingredient feeding control system. After arranging the production schedule and loading raw materials into proportioning bin, the control system starts work and records data of products automatically when operated by workers. And the data can be managed and queried and generated statistic report forms conveniently.In the system, IPC is used to manage data conformably and PLC monitor and control electric equipment of workshop. The intelligent proportioning instrument feedbacks the progress of weighing to PLC and also the results of data to IPC. In the system, the PLC (F70S) of Fuji, and intelligent proportioning instrument (AD4325A) of A&D Company and other equipments are used to weight and coordinately control in workshop. Communications are performed between IPC and PLC using protocol TCP/IP. Program for IPC which is established by VB.NET and SQL SERVER 2000, which can manage data of the raw material ratio for production and also record data, monitor and control the real-time production, and other assistant functions. As a result, not only the precision of the ceramic production and efficiency can be improved, but also the data of product and raw materials can be queried and generated statistic report forms expediently by the renovated system, which has a great significance for application.