The invention discloses an input and output circuit and a train signal system, the input and output circuit comprises at least two channel modules, each channel module comprises a main control unit and a watchdog unit, the main control unit is used for sending a channel closing signal when a fault signal is detected, the watchdog unit is connected with the main control unit, and the watchdog unit is connected with the main control unit; the channel enabling module is used for responding to the channel closing signal to send out a channel enabling signal; and the channel control switch is connected with the main control unit and the watchdog unit of each channel module, and is used for responding to the channel enable signal to disconnect an input/output channel between the main control unit of each channel module and an external component. When the main control unit of the channel module breaks down, the watchdog unit of the fault channel module enables the channel control switch to cut off input and output channels of all external components, the problem that common cause failure exists in a circuit of an existing safety watchdog is solved, and driving safety and system availability are guaranteed.
本发明公开了一种输入输出电路和列车信号系统,输入输出电路包括:至少二个通道模块,每个所述通道模块包括主控单元和看门狗单元,所述主控单元用于检测到故障信号时发出通道关闭信号,所述看门狗单元与所述主控单元连接,用于响应于所述通道关闭信号发出通道使能信号;通道控制开关,所述通道控制开关与每个所述通道模块的所述主控单元和所述看门狗单元连接,用于响应于所述通道使能信号断开每个所述通道模块的所述主控单元与外部件的输入输出通道。在通道模块的主控单元故障时,故障系通道模块的看门狗单元使能通道控制开关切断所有的对外部件的输入输出通道,解决了现有的安全看门狗的电路存在共因失效的问题,保证行车安全及系统可用性。
Input and output circuit, train signal system and train
输入输出电路、列车信号系统和列车
2024-07-16
Patent
Electronic Resource
Chinese
Urban rail train and train tail closed-circuit circuit for realizing train hard line signal scene
European Patent Office | 2020
|TRAIN END AND TRAIN INTEGRITY CIRCUIT FOR TRAIN CONTROL SYSTEM
European Patent Office | 2017
|TRAIN END AND TRAIN INTEGRITY CIRCUIT FOR TRAIN CONTROL SYSTEM
European Patent Office | 2016
|TRAIN END AND TRAIN INTEGRITY CIRCUIT FOR TRAIN CONTROL SYSTEM
European Patent Office | 2015
|TRAIN END AND TRAIN INTEGRITY CIRCUIT FOR TRAIN CONTROL SYSTEM
European Patent Office | 2016