摘要:
There is provided a production line monitoring device that can identify a cause of a production defect with a high accuracy, reduce the amount of analysis data and the amount of computation, and perform real-time processing. A production line monitoring device 6 of the invention includes a defect indication detection unit 61 that detects an indication of a production defect of a production line 1, and a defect cause identification unit 62 that identifies a cause of the production defect. The defect indication detection unit 61 collects measurement information that is measured by an inspection apparatus 5 for each of references REF1 to REF3 that identifies a position on products, and detects an indication of the production defect from the change with time of the measurement information at the references REF1 to REF3. The defect cause identification unit 62 performs stratified analysis on the basis of production information that is related to the reference REF2 when the defect indication detection unit 61 detects an indication of a production defect, and identifies a cause of a production defect from a result of the analysis.