The invention discloses a double 2-vote-2 safety redundancy system which is applied to the field of rail transit and comprises a safety redundancy system and a hot standby system which are composed of processing modules. The processing module is composed of a first processing unit, a second processing unit and a control unit, the processing unit can calculate and verify verification values of the input data, the logic operation data and the output data to judge whether the safety redundant system breaks down or not, and switching of the hot standby system is achieved through the control unit. The double 2-vote-2 safety redundancy function is realized in three steps of input acquisition, logical operation and output driving through the processing module, so that the correctness of an output driving command is guaranteed, and the problem that the double 2-vote-2 safety redundancy function is realized only in the step of output driving, whether data of input acquisition and logical operation are changed or not cannot be determined, and the accuracy of the driving command is ensured is avoided. And driving command errors are caused, so that the safety problem is solved.
本发明公开了一种二乘二取二安全冗余系统,应用于轨道交通领域,该系统包括由处理模块组成的安全冗余系统及热备系统;处理模块由第一处理单元、第二处理单元及控制单元组成,处理单元可用计算并验证输入数据、逻辑运算数据及输出数据的校验值,来判断安全冗余系统是否故障,并通过控制单元实现热备系统的切换,通过处理模块在输入采集、逻辑运算及输出驱动三个步骤均实现二乘二取二安全冗余功能,保障了输出的驱动命令的正确性,避免了只在输出驱动的步骤实现了二乘二取二安全冗余功能,无法确定输入采集、逻辑运算的数据是否发生变化,导致驱动命令错误,引发的安全问题。
Double 2-vote-2 safety redundancy system
一种二乘二取二安全冗余系统
01.10.2024
Patent
Elektronische Ressource
Chinesisch
IPC: | B61L Leiten des Eisenbahnverkehrs , GUIDING RAILWAY TRAFFIC |
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