Line production line workload prediction method based on production cycle

Abstract

The invention provides a line production line workload prediction method based on a production cycle. The method comprises the steps of forming an in-process product list information set; forming a virtual workpiece list information set; calculating a production periodic table according to the historical workpiece information; integrating the in-process product list information and the virtual workpiece list information as a set of elements to obtain a simulated workpiece list information set; obtaining a complete process flow corresponding to each piece of simulated workpiece list informationaccording to the production periodic table; calculating the estimated arrival time, the estimated start time and the estimated end time of each step of each simulation workpiece; and obtaining a prediction set of the prediction information of each simulation workpiece to form a statistical report. According to the characteristics and known data of the flow production line, the prediction method is utilized to quickly realize workload prediction of the whole production line in a period of time in the future, detailed prediction data are reserved, analysis of each dimension is performed on thedata, and the regulation and control purposes of production regulation and control, productivity early warning and the like are achieved in combination with the condition of the actual production line.

Description

technical field [0001] The invention relates to the technical field of semiconductors, in particular to a method for predicting the workload of an assembly line based on a production cycle. Background technique [0002] The flow-shop production line usually pre-sets the product flow according to the product. The work flow is composed of a number of steps arranged in sequence. After the workpiece enters the production line, it is carried out step by step according to the predetermined product flow. Processing until the processing of all processes is completed. [0003] Forecasting the amount of work (move) is one of the important means of production control. Conventional technology is a forecasting method based on historical turnover rate (TR, turn ratio) or DPML (day per mask layer). Both TR and DPML are indicators of product movement rate. TR usually refers to the number of moves completed by a workpiece (lot) within 1 day, and DPML refers to the number of days required t...

AI Technical Summary

Problems solved by technology

[0010] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a method for predicting the workload of a flow-line production line based on the production cycle, which is used to solve the problem of the inability to consider the differences in the actual working time of different process steps in the prior art and the inability to Carrying out classified statistics on different dimensions fails to meet the requirements for production regulation and capacity early warning

Images