Patent ID: 9581996
Date: 2017-02-28
CPC Classifications: G05B

Claim:
1. A management device for determining an abnormality in a batch process of a substrate, the management device comprising: a communication unit configured to receive substrate processing data from a substrate processing apparatus; a measurement data storage unit configured to store the substrate processing data received from the communication unit, wherein the substrate processing data comprises at least one of temperature data, gas flow rate data and pressure data; a setting unit configured to set one of the substrate processing data as a determining target, set reference data as a determining reference of the corresponding substrate processing data, set an upper limit value and a lower limit values for each data value of the reference data, and set a band defined within the range higher than the lower limit value with respect to the reference data and lower than the upper limit value with respect to the reference data; a comparing unit configured to compare each data of the substrate processing data with each data of the corresponding reference data in a corresponding point in time of the batch process, and identify each data that are determined to fall outside the band; a correction unit configured to assign an evaluation value to a data point, of a plurality of data points, determined to fall outside the band and further increment the evaluation value of a predetermined number of previous data points and subsequent data points of the plurality of the data points, and repeat the evaluation value assigning process for a predetermined number of batch processes, and sum the evaluation values of each corresponding data point after the predetermined number of batch processes, and automatically correct the upper limit of the band and the lower limit of the band of a batch process having a summed evaluation value of a data point that exceeds a predetermined threshold value set by the setting unit; a counting unit configured to count the number of times that the substrate processing data falls outside the band for a current batch process, wherein the counting unit is executed after the correction unit; a determining unit configured to determine whether the substrate processing data is abnormal, when the counted number counted by the counting unit exceeds a predetermined value; and a controller configured to transmit a signal to the substrate processing apparatus to control an operation of a processing furnace of the substrate processing apparatus when the determining unit determines that the substrate processing data is abnormal to prevent defective manufacturing.