Activity amount calculation apparatus, system including activity amount calculation apparatus, and activity amount calculation method

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.