BAS control system of urban railway system and method thereof

Abstract

The invention discloses a BAS control system of urban railway system and a method thereof. The BAS control system comprises a station level integrated monitoring system network and a BAS field level network, wherein the station level integrated monitoring system network is provided with a redundancy scheduling module, the BAS field level network is in a double loop network structure and comprises at least two redundancy PLCs and a redundancy scheduling module, the redundancy PLCs are divided into a main PLC and a spare PLC and are connected to the station level integrated monitoring system network through the loop network, and the redundancy scheduling module is used for detecting communication states so as to be switched to the spare PLC; the method comprises the following steps: detecting whether the communication between the station level integrated monitoring system network and the main PLC is interrupted through the redundancy scheduling module, and if so, then switching the spare PLC into the main PLC by the redundancy scheduling module. The invention is favorable for lowering the construction cost of the BAS system and reducing the difficulty in integrating a BAS subsystem by an ISCS, and can ensure the uninterrupted and undisturbed automatic switching operation of controlled equipment and modes when a fault appears in any single node.

Description

technical field [0001] The invention relates to a communication control system, in particular to an urban rail transit BAS control system. Background technique [0002] In order to further improve the operation and management level, it has become a trend of subway development to set up an integrated monitoring system (hereinafter referred to as ISCS), and the environment and equipment monitoring system (hereinafter referred to as BAS) is the most important part of ISCS. According to the characteristics of the subway, PLCs are installed at both ends of A and B to collect the electromechanical equipment information at both ends of A and B respectively. The PLCs at both ends of A and B are interconnected and connected to the ISCS network through the network or bus. It is necessary to fully consider the stable and reliable operation of the system. [0003] According to the different construction methods of the BAS system, the redundancy methods used are also different. The two-...

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Problems solved by technology

[0011] Regardless of which station ISCS switch is turned off, the two BAS ring networks will not be able to communicate with each other

If the switch connected to the ring network where the active PLC is located is turned off, the ISCS cannot read the data information of the PLC at this end

[0012] If a double-node failure occurs on the ring network, the switch on the ring network cannot communicate with the ISCS switch, and the ISCS cannot read the PLC data information on the ring network.

[0013] Although the above problems can be solved by adding hardware, that is, each PLC is equipped with two Ethernet network cards, which are respectively connected to ring network 1 and ring network 2, but this method will greatly increase the construction cost of the BAS system, and for ISCS In other words, there are 4 channels with the redundant PLC, and it is necessary to comprehensively judge which link data is used, which greatly increases the complexity of ISCS scheduling

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