A safety card control system for motor vehicle climbing operation based on three-layer logic interlocking

Abstract

The invention provides a safety card control system for CRH (China railway highspeed) climbing operation based on three layers of logic interlocking. The safety card control system comprises a relay logic interlocking system, a PLC (programmed logic controller) logic interlocking system, and a software logic interlocking system, wherein the relay logic interlocking system, the PLC logic interlocking system and the software logic interlocking system are respectively connected with a climbing operation card issuing unit, an isolation switch control unit, a ground rod control unit, a safety door control unit, a color lamp guide unit, and a safety warning unit; the PLC logic interlocking system is connected with the relay logic interlocking system and the software logic interlocking system. The safety card control system has the advantages that by realizing the three safety card control defense lines, namely relay logic interlocking, PLC logic interlocking and software logic interlocking, when one defense line fails or has mistakes, the other two defense lines still can realize the safety card control function; the logic control is stricter, and the safety card control is more perfect; the reliability and safety of the system are improved, and the CRH climbing operation safety is guaranteed.

Description

technical field [0001] The invention relates to the technical field of EMU safety, in particular to a three-layer logic interlocking-based safety card control system for EMU top-climbing operations. Background technique [0002] 27.5KV high-voltage catenary and a variety of high-voltage electrical equipment are installed on each track in the maintenance depot of the EMU. During the maintenance and maintenance of the EMU, any carelessness may cause serious consequences, even personal injury, and the maintenance There are many types of operations in the warehouse, and the cross-operation is complicated, which brings potential safety threats to the operators. Under this situation and demand, a safety interlocking monitoring system for motor vehicle maintenance work has been developed. During the application process, it was found that the security control capability of the system’s summit operation is weak, and the control link is single, which is prone to card control loophole...

AI Technical Summary

Problems solved by technology

During the application process, it was found that the security card control capability of the system's summit operation is weak, and the card control link is single, and card control loopholes are prone to occur, resulting in potential safety hazards

At present, the safety interlocking monitoring system of the motor vehicle maintenance operation generally only adopts the single-layer card control technology of logic interlocking at the PLC level, which has the defects of single card control link and weak card control ability. Misoperation of equipment, causing safety hazards

Images