Method and device for providing wire breakage warning

A device for providing a wire breakage warning, comprising:

• a storage circuit storing a program code;
• and
• a processor coupled to the storage circuit and accessing the program code to execute:
• obtaining a plurality of process values when a crystal ingot cutting machine uses a cutting wire to cut a crystal ingot;
• dividing the process values into N groups, and determining a statistical property of each of the groups, wherein N in a positive integer;
• identifying at least one outlier value in the process values based on the statistical property of each of the groups, or determining a statistical property variation corresponding to each of the groups based on the statistical property of each of the groups;
• and
• providing a wire breakage warning associated with the cutting wire in response to determining that the at least one outlier value in the process values meets a first warning condition, or the statistical property variation corresponding to each of the groups meets a second warning condition.