| 摘要 |
PURPOSE: A control system for train on-board computers is provided to compensate the time which a train is rendered uncontrollable during operating on-board computer switching, thereby enhancing safety in train operation. CONSTITUTION: A first on-board computer comprises a first monitoring unit(110), a first power controlling unit(130), and a first active-standby switching unit(140). A second on-board computer comprises a second monitoring unit(210), a second power controlling unit(230), and a second active-standby switching unit(240). The first and second monitoring units generate error signals through monitoring each of the on-board computers processors to detect operation errors. The first and second power controlling units determines whether the error occurs in the first or second on-board computer based on the error signals generated by the monitoring units. The first and second active-standby switching units generate switching signals to change an on-board computer operation status into active or standby. In the case of an error occurrence in the first on-board computer, the second active-standby switching unit supplies operating power of the first computer to the second computer to compensate the train uncontrollable time until the second on-board computer begins to operate, and generates a switching signal to the second on-board computer to operate. |
