State monitoring method for safe computer platform in urban rail transit signal system
An urban rail transit and safety computer technology, applied in the field of rail transit, can solve problems such as increased operating costs, main system failures, large short circuits, etc., to improve safety and availability, reduce hardware dependencies, and reduce hardware complexity.
Active Publication Date: 2019-04-26
TRAFFIC CONTROL TECH CO LTD
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Problems solved by technology
Due to the long wiring distance, the possibility of open circuit and short circuit is relatively high, which is not conducive to hardware maintenance
[0007] (2) The fault detection line runs through the entire train, which is not conducive to train marshalling, reduces the efficiency of railway operation, and increases operating costs
[0008] (3) The two-by-two security computer platform has the main system running normally, but the backup system thinks that the main system is faulty
There is a risk that the microcontroller will not be able to put the relay in a fault state
The backup system cannot detect the failure of the main system, and the backup system cannot be upgraded to the main system. The availability of the system needs to be improved
Method used
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[0040] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.
[0041] figure 2 A schematic flow chart of a state monitoring method for a safety computer platform in an urban rail transit signaling system provided by this embodiment is shown, including:
[0042]S201. The first main board microcontroller MA_1 of the security computer platform in the urban rail transit signaling system, the second main board microcontroller MA_2, the first backup main board microcontroller MB_1, and the second backup host The board microcontroller MB_2 sends input board microcontroller IA_1 to the first main system, the second main system input board microcontroller IA_2, the first backup system input board microcontroller IB_1 and the second back...
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The embodiment of the invention discloses a state monitoring method for a safe computer platform in an urban rail transit signal system. The method comprises the following steps: sending correspondingmicroperiod state messages and initialized start messages corresponding to IA_1, IA_2, IB_1 and IB_2 by MA_1, MA_2, MB_1 and MB_2, separately; when the microperiod or initialization is finished, sending corresponding microperiod state messages and initialized start messages to IA_1, IA_2, IB_1 and IB_2 by MA_1, MA_2, MB_1 and MB_2, separately; and determining primary and auxiliary switch of a main board and an input board according to a monitoring result. By monitoring the states of a primary system and auxiliary system of the main board through the input board in the urban rail transit signal system, the monitoring result is taken as a ground for primary and auxiliary switch of the main board and the input board, so that dependence on hardware is reduced, the complexity of hardware is reduced, the hardware cost is saved and the system safety and usability are improved.
Description
technical field [0001] The embodiment of the present invention relates to the technical field of rail transit, in particular to a state monitoring method of a safety computer platform in an urban rail transit signal system. Background technique [0002] The safe computer platform of the main engine in the urban rail transit signal system is realized by two times two out of two, and the safe computer platform of the input board is realized by two out of two. Two times two, that is, the host can be divided into the main system and the backup system. The output data between the two systems must be compared and voted on. If the two systems are inconsistent, the backup system will be down. At the same time, there is only one main system in the system, and the other is the backup system. Both the main system and the backup system perform collection input and logic processing operations, the main system outputs externally, and the backup system does not output. When the main syst...
Claims
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IPC IPC(8): B61L23/00G06F11/30G06F11/20
CPCB61L23/00G06F11/202G06F11/2033G06F11/3055
Inventor 付宇刘波
Owner TRAFFIC CONTROL TECH CO LTD