Monitor apparatus and method for identifying electronic apparatus thereof

A monitor apparatus, comprising:

• a storage module configured to store a power signature database and a line resistance database, wherein the power signature database is related to at least one electronic apparatus, and the line resistance database is related to a power system where the monitor apparatus being located, wherein the monitor apparatus is a power meter;
• a detecting module configured to detect whether at least one power signature event occurs;
• and
• a processing module coupled to the storage module and the detecting module, and configured to adaptively update the power signature database and the line resistance database;
• wherein the detecting module detects a steady state power signature of the at least one power signature event, and the processing module normalizes the steady state power signature and calculates a system impedance of the at least on power signature event according to the steady state power signature being normalized;
• wherein the processing module further identifies at least one unknown electronic apparatus resulting the at least one power signature event according to the system impedance, the power signature database and the line resistance database.