Modern dairy plants are increasingly using full automation to ensure efficient production, while automated control management ensures product quality safety, standards, stability and traceability to ensure compliance with HACCP and GMP requirements. .
Production process automation control, remote monitoring, man-machine interface, process record and trend analysis, etc., automation and information technology, and can be connected with ERP and other management systems to achieve production planning and order management, optimize production, quality and recipe management , tracking records and production information and analysis systems, and can implement integrated plant management systems such as equipment management, warehouse/material management and asset management.
The automatic control can realize the full automation of milk storage, batching, homogenization, pasteurization, cooling, filling, CIP and warehouse in dairy production, which is conducive to achieving fully enclosed production and avoiding pollution during production and processing. The whole process of each section adopts automatic control and information management to make the whole production process safer, more reliable and standard, and realize a powerful combination of unit equipment automation, production process automation and factory management informationization.
The dairy production line control system adopts PLC detection and setting process parameters to control the on-site execution mechanism. The central control room uses the industrial computer as the engineering station to monitor the dairy production process in real time. The main parameters are temperature, liquid level, flow rate, etc. Level computer, connected to the central control room through standard Ethernet, real-time collection of field data for remote monitoring of the office; configuration software combined with advanced control algorithms and artificial intelligence algorithms to achieve process control of yogurt fermentation; under QA monitoring Each process of the batching process is carried out to ensure the accuracy of the ingredients and the stability of the product quality. 
In the control room of each workshop, a PLC with a slave interface is provided as an operator station. The PLC used in the workshop control room performs the control tasks of the system, completes the detection, setting, indicating alarm and adjustment control functions of the process parameters, and uploads the control status information to the central control room. All process parameters can be adjusted through the PLC touch screen interface. The PLC program changes can change the preset parameters of the field. The modular controller allows the user to have additional flexibility when configuring the system, with stronger processing capacity and larger I/O capacity.
Because the program design uses sequential control technology, the program is strictly executed according to the process design steps, and the status of each valve and pump is detected in real time. If there is a fault or the temperature exceeds the set range, the program will generate an alarm signal, and the interlock related valve And the pump action to ensure the safety and normal operation of the system. The central control room is equipped with a host as an engineering station to remotely and centrally monitor the production process parameters of the workshop. Engineer-level personnel have the right to program, configure, download and debug online by any host PLC control station in the control system.
The characteristics of dairy production are that there are many equipments, the control distance is long, and the electromagnetic environment is poor, so the connection communication and operator interface of the control equipment are demanding. Real-time monitoring system is required to have production management functions, real-time data collection, selection, operation, transmission, batching, cleaning, display and printing for the production processes of major production links and auxiliary links; it is necessary to set standardized process pictures, operation screens, adjustment screens, Trend screen, alarm screen, group screen, and report screen.
The management level host monitors various data stored in the PLC through an Ethernet network. These data are used for data acquisition, monitoring, production management, equipment maintenance, production processes, and material mix. At the same time, the TCP/IP protocol allows computers to access open databases using structured language (SQL) for storage and query. The formation of the report.