Switching system and switching method for dual-computer hot standby

Abstract

The invention discloses a switching system and a switching method for a dual-computer hot standby. The switching system comprises an inverter device A, an inverter device B, a hot standby switching device, a driving device and loads, wherein the inverter device A and the inverter device B are main and secondary devices of dual host computers and are used for supplying power to respective loads; the hot standby switching device is used for repeatedly detecting working states of the dual host computers through two-path data, treating the detected data and performing fault analysis; and when one host computer in fault is confirmed, the states of the dual host computers and the driving device are controlled by the hot standby switching device, so that power is supplied to the two-path loads by the normally running host computer. The independent hot standby switching device, the two-path data backup and the three-path power supply backup are adopted in the switching system, so that the working reliability and stability of the hot standby switching device are increased and the running safety of a train is extremely ensured.

Description

technical field [0001] The invention relates to the field of train safety control systems, in particular to a dual-machine hot standby switching system and a control method. Background technique [0002] Intelligent Transport System (ITS for short) effectively integrates advanced information technology, data communication transmission technology, electronic sensing technology, electronic control technology and computer processing technology into the entire transportation management system, reliability is one of them a basic requirement. In order to ensure the normal operation of train traction, braking and other systems, the train is equipped with various necessary auxiliary mechanical devices, including cooling fans, transformer cooling oil pumps, converter cooling water pumps, brakes, pantographs, etc. Various pneumatic mechanical devices provide air compressors for wind sources, etc. At the same time, in order to ensure a good and comfortable riding environment and work...

AI Technical Summary

Problems solved by technology

[0005] In the existing technical scheme, two inverters are redundantly controlled, and the entire control system is completed by the DSP in the inverter. Once the control system fails, it will affect the hot standby switching function of the inverter, and the normal inverter The inverter will also stop output, causing the entire system to be paralyzed; or it may cause the hot standby contactor to malfunction or not to operate. If a short circuit is caused by malfunction, it may damage the electrical equipment and cause the inverter to explode, etc. Great electricity safety and equipment safety hazards

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