Generating a fault tree

摘要

A method, computer program product, and system that discards unneeded elements when generating a fault tree of an object to be analyzed. Configuration information identifies a plurality of functional blocks comprised by the object and a plurality of signal lines that connect the functional blocks in logical relationships. Exclusion target information identifies a signal line that may be excluded from the plurality of signal lines without loss of information or a functional block that may be excluded from the plurality of functional blocks without loss of information. Exclusion of a block or signal line may be determined by detecting a redundant functional block or by detecting a circular signal path traversed by two or more signal lines. The generated fault tree omits the excluded block or signal line and identifies the existence of a redundant block or of a circular signal path.

主权项

1. A method for generating a fault tree of an object to be analyzed, wherein the object to be analyzed comprises a plurality of functional blocks, the method comprising:
a processor of a computer system storing a configuration information of the object to be analyzed, wherein the configuration information identifies the plurality of functional blocks and further identifies a plurality of signal lines that each connect two or more blocks of the plurality of functional blocks; the processor acquiring an exclusion target information that identifies a part to be excluded from the fault tree, wherein the part to be excluded comprises at least one of a first functional block of the plurality of functional blocks and a first signal line of the plurality of signal lines; and the processor creating from the configuration information and from the exclusion target information a fault tree of a part to be analyzed, wherein the creating comprises excluding the part to be excluded from the plurality of functional blocks and from the plurality of signal lines.