The application provides a
signal carding method and
system for
control system reconstruction, which comprises the following steps: obtaining multi-source
engineering files of a
control system to be reconstructed and extracting
signal related information; performing consistency comparison on overlapping information from different files for the same object, and recording inconsistent available information as inconsistent information; integrating available information sets based on the corrected inconsistent information and the information passed by the consistency comparison; analyzing the available information sets based on preset identification rules, reversely identifying a complete
signal set for the reconstruction design, and generating corresponding attribute information sets for each signal to form a final I / O
list for the reconstruction. Through the establishment of a systematic reverse
carding process and signal identification rules for analog /
relay systems, the application solves the problems of incomplete, inaccurate and inconsistent signal
carding with the state of the art in the in-service reconstruction project, and provides an accurate and reliable data basis for subsequent reconstruction design.