US-12625483-B2 - Activity amount calculation apparatus, system including activity amount calculation apparatus, and activity amount calculation method

US12625483B2US 12625483 B2US12625483 B2US 12625483B2US-12625483-B2

Abstract

The invention presents an activity amount calculation apparatus, which includes a processor; a storage unit; and an interface configured to acquire information from a piece of equipment used for an operation of a process in a manufacturing line. The storage unit manages a standard operation time related to an operation time in the process. The processor acquires, using the interface from a piece of equipment that is an observation target in the manufacturing line, an actual value of a work time of the piece of equipment, and calculates, using the acquired actual value and the standard operation time of a process performed by a piece of equipment that is not the observation target in the manufacturing line, an activity amount of each piece of equipment in the manufacturing line.

Inventors

Kiyotaka Takahashi
Takahiro Nakano

Assignees

HITACHI, LTD.

Dates

Publication Date: 20260512
Application Date: 20231128
Priority Date: 20221205

Claims (15)

1 . An activity amount calculation apparatus comprising: a processor; a storage unit; and an interface configured to acquire information from a piece of equipment used for an operation of a process in a manufacturing line, wherein the storage unit manages a standard operation time related to an operation time in the process, and the processor acquires, using the interface from a piece of equipment that is an observation target in the manufacturing line, an actual value of a work time of the piece of equipment, and calculates, using the acquired actual value and the standard operation time of a process performed by a piece of equipment that is not the observation target in the manufacturing line, an activity amount of each piece of equipment in the manufacturing line.
2 . The activity amount calculation apparatus according to claim 1 , wherein when the activity amount is calculated with a first piece of equipment serving as the observation target among pieces of equipment observable as the observation target in the manufacturing line, the processor sets, as the first piece of equipment, a piece of equipment performing a process whose standard operation time is longest among the pieces of equipment observable as the observation target, and acquires the actual value from the first piece of equipment.
3 . The activity amount calculation apparatus according to claim 1 , wherein when the activity amount is calculated with a first piece of equipment and a second piece of equipment serving as the observation target among pieces of equipment observable as the observation target in the manufacturing line, the processor sets, as the first piece of equipment and the second piece of equipment, pieces of equipment performing processes having a largest interval therebetween among the pieces of equipment observable as the observation target, and acquires the actual value from the first piece of equipment and the second piece of equipment.
4 . The activity amount calculation apparatus according to claim 1 , wherein when the activity amount is calculated with a first piece of equipment, a second piece of equipment, and a third piece of equipment serving as the observation target among pieces of equipment observable as the observation target in the manufacturing line, the processor sets, as the first piece of equipment and the second piece of equipment, pieces of equipment performing processes having a largest interval therebetween among the pieces of equipment observable as the observation target, acquires the actual value from the first piece of equipment and the second piece of equipment, sets, as the third piece of equipment, a piece of equipment that is different from the two pieces of equipment and that performs a process whose standard operation time is longest, and acquires the actual value from the third piece of equipment.
5 . The activity amount calculation apparatus according to claim 1 , wherein the storage unit stores past actual performance information on each process related to the operation time, and when the activity amount is calculated with a first piece of equipment serving as the observation target among pieces of equipment observable as the observation target in the manufacturing line, the processor sets, as the first piece of equipment, a piece of equipment performing a process whose operation time is longest in the actual performance information among the pieces of equipment observable as the observation target, and acquires the actual value from the first piece of equipment.
6 . The activity amount calculation apparatus according to claim 1 , wherein when a difference between the standard operation time of the process stored in the storage unit and the acquired actual value on the process predetermined threshold value, the processor corrects the standard operation time of the process stored in the storage unit.
7 . The activity amount calculation apparatus according to claim 1 , wherein the storage unit manages a takt time which is a planned value related to manufacturing of a product in the manufacturing line, and a cycle time that is an actual value, and when a difference between the takt time and the cycle time of the manufacturing line stored in the storage unit and an acquired takt time and an acquired cycle time related to the manufacturing line exceeds a predetermined threshold value, the processor corrects the standard operation time of the process performed by the piece of equipment that is not the observation target stored in the storage unit.
8 . The activity amount calculation apparatus according to claim 1 , wherein the processor corrects, based on a production plan by which a product is manufactured, the standard operation time managed using the storage unit.
9 . The activity amount calculation apparatus according to claim 1 , wherein the processor corrects, based on an equipment maintenance plan, the standard operation time managed using the storage unit.
10 . The activity amount calculation apparatus according to claim 1 , wherein the processor corrects, based on an operator personnel plan, the standard operation time managed using the storage unit.
11 . The activity amount calculation apparatus according to claim 1 , wherein the processor corrects, based on an electric power use plan of the manufacturing line, the standard operation time managed using the storage unit.
12 . The activity amount calculation apparatus according to claim 1 , wherein the processor corrects, based on operator skill information, the standard operation time managed using the storage unit.
13 . The activity amount calculation apparatus according to claim 1 , wherein the storage unit stores information on a type of a power source used by the piece of equipment in the process, and the processor calculates, further using the information on the type of the power source stored in the storage unit, the activity amount of each piece of equipment in the manufacturing line.
14 . A system comprising: the activity amount calculation apparatus according to claim 1 ; and a higher-level system configured to manage a manufacturing site, wherein the activity amount calculation apparatus is an apparatus configured to relay a manufacturing line in the manufacturing site and the higher-level system.
15 . An activity amount calculation method performed by an activity amount calculation apparatus including a processor, a storage unit configured to manage a standard operation time related to an operation time in a process, and an interface configured to acquire information from a piece of equipment used for an operation of the process in a manufacturing line, the method comprising: acquiring, by the processor using the interface from a piece of equipment that is an observation target in the manufacturing line, an actual value of a work time of the piece of equipment, and calculating, by the processor using the acquired actual value and the standard operation time of a process performed by a piece of equipment that is not the observation target in the manufacturing line, an activity amount of each piece of equipment in the manufacturing line.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an activity amount calculation apparatus, a system including an activity amount calculation apparatus, and an activity amount calculation method. 2. Description of Related Art JP2010-97508A relates to a process of calculating an environmental load of a product, and discloses a technique of “receiving an actual line electric power consumption of a manufacturing line, an apparatus characteristic of each apparatus in the manufacturing line, rated electric power of each apparatus, and numerical data of each specification item of each product (S31), determining a coefficient of each apparatus using a relationship between the apparatus characteristic and a ratio (coefficient) of an actual electric power consumption to the rated electric power of the apparatus (S32), determining a correlated specification item of each apparatus using an apparatus characteristic-correlated specification item relationship which relates the apparatus characteristic to a specification item correlated with apparatus electric power consumption (S33), distributing the actual line electric power consumption for each apparatus using the rated electric power and the coefficient for each apparatus and obtaining the electric power consumption for each apparatus (S34), distributing an electric power consumption for each apparatus for each product using the numerical data on the correlated specification item for each apparatus and obtaining the electric power consumption for each apparatus and for each product (S35), and obtaining an electric power consumption for manufacturing the product for each product using the electric power consumption for each apparatus and for each product (S36)”. JP2009-245043A is intended for a manufacturing line such as a low-volume high-mix manufacturing line in which a takt time varies, and discloses a method of estimating magnitude of the variation and reducing the variation by devising a line design, providing support to an operator, and assigning a high-skill operator. CITATION LIST Patent Literature PTL 1: JP2010-97508APTL 2: JP2009-245043A SUMMARY OF THE INVENTION In order to implement carbon neutral (CN), for example, a business operator owning a manufacturing line is required to manage a greenhouse gas (GHG) emission when a product is manufactured. Here, when an equipment activity amount is used to calculate the GHG emission, it is conceivable that it is necessary to acquire information from all pieces of equipment used for manufacturing. However, not all pieces of equipment in the manufacturing line necessarily include an information-providing interface (I/F), and necessary information may not be acquired. According to the invention, an activity amount calculation apparatus and a system according to the following aspects are provided. The activity amount calculation apparatus includes a processor, a storage unit, and an interface configured to acquire information from a piece of equipment used for an operation of a process in a manufacturing line. The storage unit manages a standard operation time related to an operation time in the process. The processor acquires, using the interface from a piece of equipment that is an observation target in the manufacturing line, an actual value of a work time of the piece of equipment. Then, the processor calculates, using the acquired actual value and the standard operation time of the process performed by a piece of equipment that is not the observation target in the manufacturing line, the activity amount of each piece of equipment in the manufacturing line. In addition, there is provided a system including the activity amount calculation apparatus and a higher-level system configured to manage a manufacturing site, in which the activity amount calculation apparatus is used as an apparatus configured to relay a manufacturing line and the higher-level system. According to the invention, an activity amount calculation method according to the following aspect is provided. The activity amount calculation method is a method performed by an activity amount calculation apparatus including a processor, a storage unit configured to manage a standard operation time related to an operation time in a process, and an interface configured to acquire information from a piece of equipment used for an operation of the process in a manufacturing line. The processor acquires, using the interface from a piece of equipment that is an observation target in the manufacturing line, an actual value of a work time of the piece of equipment, and calculates, using the acquired actual value and the standard operation time of a process performed by a piece of equipment that is not the observation target in the manufacturing line, an activity amount of each piece of equipment in the manufacturing line. According to the invention, even when necessary information cannot be acquired from equipment, it is possible