Patent ID: 8972222
Filing Date: 2015-03-03
Classification: G05B,Y02P

Abstract:
1. A system for identifying causes of an abnormality appearing in one of data of products produced in plants and/or data of manufacturing conditions of one or more of the plants, the system comprising: a data storing device in which the data of products and/or the data of manufacturing conditions are acquired for a predetermined set period; means that set one or more product threshold values for the products for the predetermined set period; means that compares the data of the products with the one or more product threshold values; means that accumulate a number of times that the data of the products falls within a reference range determined by the one or more product threshold values to acquire a trend and/or a frequency related to an abnormality of the products; means that set one or more manufacturing condition threshold values for the manufacturing conditions for the predetermined set period; means that compares the data of the manufacturing conditions with the one or more manufacturing condition threshold values; means that accumulate a number of times that the data of the manufacturing conditions falls within a reference range determined by the one or more manufacturing conditions threshold values to acquire a trend and/or a frequency related to an abnormality of the manufacturing conditions; and means that compares the trend and/or the frequency related to the abnormality of the products with the trend and/or the frequency related to the abnormality of the manufacturing conditions to identify the cause of the abnormality appearing in the products produced in the plants and/or the manufacturing conditions of the one or more of the plants.