The invention aims to provide a programmable logic control system for a subway train, and solves the problems of high failure rate and complex electromagnetic environment of a contact relay control system. Comprising a programmable logic control unit which is in communication connection through the Ethernet or a bus; each programmable logic control unit is configured to be an input circuit, an output circuit and a main control operation circuit, and the main control operation circuit is configured to perform logic control on an input signal according to a preset logic rule and is also configured to perform data recording on a logic control process; the input circuit, the output circuit and the main control operation circuit form a logic control circuit; the internal communication circuit and the power supply circuit form a series of logic control circuits; the two logic control circuits form a double-system logic control circuit, and the hot standby switching control circuit is used for monitoring the state information of the logic control circuit, deciding a signal path according to the node state information, and ensuring that one path can realize that the output circuit outputs a driving signal.
本发明的目的在于提出一种地铁列车可编程逻辑控制系统,解决触点式继电器控制系统存在的故障率较高,电磁环境复杂的问题。包括通过以太网或总线进行通信连接的可编程逻辑控制单元;各可编程逻辑控制单元被配置为输入电路,输出电、主控运算电路,主控运算电路被配置为对输入信号按照预设逻辑规则进行逻辑控制,还被配置为对逻辑控制过程进行数据记录;还包括内部通信电路,电源电路,输入电路、输出电路、主控运算电路、内部通信电路、电源电路构成一系逻辑控制电路;两逻辑控制电路组成双系逻辑控制电路,还设置热备切换控制电路,热备切换电路用于监控它系逻辑控制电路状态信息,根据节点状态信息决策信号通路,保一通路可实现输出电路输出驱动信号。
Programmable logic control system and control method for subway train
地铁列车可编程逻辑控制系统及控制方法
2022-10-11
Patent
Electronic Resource
Chinese
IPC: | B61L Leiten des Eisenbahnverkehrs , GUIDING RAILWAY TRAFFIC |
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