Research and Implementation of Dynamic Cooperative Control System for Cable Laying

In the traditional underground cable laying, the cable laying method of manually controlling the start and stop of tractor and conveyor has some problems, such as low automation degree, unadjustable speed and easy deformation of cable. Aiming at the above problems, this paper designs a dynamic cooperative control system for cable laying based on PLC. The system adopts the master and slave station control mode, and carries on the linkage control to the electric line release frame, electric roller and tractor, and realizes the synchronous start and stop. Electric boxes are arranged in the cable laying path successively, and the influence of voltage drop on power supply is eliminated by the power supply from head to tail. The control system is divided into four layers, with the main station S7-1500 PLC as the control core, and each layer carries out data transmission by means of communication. The upper information system is at the top level, which sends instructions to the PLC of the master station and receives the cable laying data fed back by it. Master station PLC can receive the instructions issued by the same layer HMI to control the slave station PLC; The hardware driver is controlled by S7-1200 PLC of the slave station. The field test results of the system show that the cable laying speed of the system is adjustable, and the starting, running and braking are stable, which not only improves the automation degree of the cable laying, but also reduces the risk of cable damage.