Method for verifying bad pattern in time series sensing data and apparatus thereof

An apparatus for verifying a bad pattern in sensing data, the apparatus comprising:

• a verification parameter receiving unit configured to receive verification parameters including information on the bad pattern applied to sensing data of a sensor and information on a verification method;
• a sensing data extracting unit configured to access the sensing data of each product,
• generated by the sensor based on verification method information;
• a similarity measure calculating unit configured to calculate similarity measures between the bad pattern based on the bad pattern information and the sensing data, for each product;
• and
• a bad pattern verification unit configured to calculate an error rate of the bad pattern based on the similarity measures.

A method for monitoring sensing data of equipment, the method comprising:

• receiving information on a bad pattern applied to sensing data measured from a sensor;
• receiving sensing data information from the sensor;
• calculating similarity measures of an Euclidean ratio, a correlation and a trend similarity between the bad pattern based on bad pattern information and the sensing data, each of the Euclidean ratio, the correlation and the trend similarity having a value in a range between 0, which means non-similarity, and 1, which means sameness;
• and
• generating a warning signal when a calculated value of at least one from among the Euclidean ratio, the correlation and the trend similarity is 1,
• wherein the trend similarity is a measured value pattern one of increasing and decreasing according to a passage of time.

Production equipment comprising:

• one or more sensors generating sensing data;
• a sensing data stream receiving unit configured to receive a sensing data stream measured from the one or more sensors;
• a bad pattern information receiving unit configured to receive information on a bad pattern applied to sensing data measured by each of the one or more sensors;
• a similarity measure calculator configured to calculate similarity measures of an Euclidean ratio, a correlation and a trend similarity between the bad pattern based on the bad pattern information and the sensing data, each of the Euclidean ratio, the correlation and the trend similarity having a value in a range between 0, which means non-similarity, and 1, which means sameness;
• and
• a warning signal output unit configured to generate a warning signal when a calculated value of at least one from among the Euclidean ratio, the correlation and the trend similarity is 1.

A reference pattern detecting apparatus comprising:

• a sensing data stream receiving unit configured to receive a sensing data stream measured from one or more sensors;
• a reference pattern information receiving unit configured to receive information on a reference pattern applied to the sensing data generated from each of the one or more sensors;
• and
• a similarity measure calculator configured to calculate and output similarity measures of an Euclidean ratio, a correlation and a trend similarity between the reference pattern based on reference pattern information and the sensing data, each of the Euclidean ratio, the correlation and the trend similarity having a value in a range between 0, which means non-similarity, and 1, which means sameness.