Tunneling soil texture analysis system for shield tunneling machine

The invention relates to the technical field of intelligent control, in particular to a tunneling soil texture analysis system for a shield tunneling machine. The system comprises a man-machine interface, PLCs (programmable logic controllers), a soil chamber and a screw conveyor. The PLCs include a control station PLC and a workstation PLC, the man-machine interface is connected with the control station PLC through the Ethernet, and the soil chamber is connected with the screw conveyor of a soil discharging mechanism. The control station PLC is connected to the workstation PLC through a MELSCNET network, the workstation PLC is connected with a soil pressure sensor through a fuzzy PID controller, and the soil pressure sensor is mounted on the soil chamber by a compression structure and connected to a variable displacement motor. The system has advantages of high response speed, high anti-jamming capability, effectiveness in soil pressure control, simplicity in operation and centralized management. 本发明涉及智能控制技术领