Production management system, program, information storage medium and production management method

Abstract

A production management system includes an input device that inputs a request from a user. The system also includes a processor that computes a total cost in response to the request inputted by the input device based on a cost database in standby time relating used equipment to a cost per unit time in standby time, which shows a cost in standby time for every predetermined time unit varying in response to an elapsed time, a cost database in disposal time relating used equipment to a cost per unit disposal volume, which shows a cost in processing time every predetermined disposal unit varying in response to a production condition and a disposal volume, and a database for production process information relating used equipment to a production condition and a production process. The system further includes an output device that indicates the total cost computed by the processor to the user by a predetermined format. The request includes a designation for production conditions showing a designation of the production conditions and a designation for aggregation unit showing the designation of aggregation unit in response to a size of the production process. The processor selects at least one of used equipment in response to the designation for production condition. The processor also computes a total cost in standby time in response to the designation of aggregation unit, based on an assumed standby time of the used equipment, and a cost in standby time per unit time of the used equipment. The processor further computes a total cost in disposal time in response to the designation of aggregation unit, based on a designation of disposal volume included in the designation of the production condition, and a cost in disposal time per unit disposal volume of the used equipment selected in response to the designation for the production condition, and computes the total cost based on the total cost in standby time and the total cost in disposal time.

Description

technical field [0001] The invention relates to a production management system, a program, an information storage medium and a production management method. Background technique [0002] In the past, the production cost of energy or materials per unit of production line was obtained based on experience, and technicians or managers obtained production cost and energy for production based on empirical methods. [0003] However, when such a method is adopted, the result differs depending on the engineer or manager, and a lot of time and labor are required for calculation. Especially in the case of semiconductor device manufacturing, which requires many processes, it is difficult to calculate the correct production cost and production energy. [0004] In addition, when manufacturing semiconductor devices, production conditions may be changed, and the production process sequence may be changed. In this case, it takes a lot of time and labor to revise the calculation of the prod...

AI Technical Summary

Problems solved by technology

[0006] However, the expense study support device described in the publication merely uses a computer to replace manual calculations, and is not a device that can flexibly calculate expenses even when production conditions change.

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