Design of embedded management terminal of coordinated control system of filter press group

Abstract

At present, there are two methods of automatic coordinated control of filter press group: one is to realize distributed control based on PLC, but communication performance of PLC's master-slave is low; the other is to redesign the whole filter press group as a whole and realize on-line control by one PLC control cabinet, but it is difficult to transplant and expand. According to requirement of both distributed and high performance communication of coordinated control system of filter press group, an embedded management terminal of coordinated control system of filter press group was designed for coordination of start and stop, feeding and unloading links of filter press. The terminal adopts STM32F407ZGT6 microcontroller. Based on the factors such as concentrate tank level, filter press performance, start and stop state, feed port position, the terminal makes start and stop, feed and unload decisions, and controls the operation of each filter press through CAN communication, so as to realize the coordinated control of the filter press group.The practical application shows that the introduction of the management terminal realizes coordination and management functions such as automatic start and stop management, operation with priority, automatic feeding, automatic unloading of the filter press groups, reduces the labor intensity of the operators, and avoids the occurrence of slurry overflow and heap accidents.

Keywords

• coal preparation plant
• coordinated control of filter press group
• concentrate tank level
• coordinate management task
• management terminal
• can communicatio