Flow rate measurement apparatus, program thereof, flow rate measurement method, and fluid supply system

A flow rate measuring method comprising:

• a step of measuring a flow rate of a fluid flowing in a flow passage;
• a step of storing a measured flow rate value;
• a step of calculating a measured flow rate value difference within a predetermined period corresponding to an amount of change occurred in a measured flow rate value;
• and
• a step of identifying an appliance which uses the fluid or leakage by determining whether or not the measured flow rate value difference is a predetermined threshold or less.

A recording medium containing program for using a computer that controls a flow rate measuring apparatus to execute processing pertaining to the following steps:

• a step of measuring a flow rate of a fluid flowing in a flow passage;
• a step of storing a measured flow rate value;
• a step of calculating a measured flow rate value difference within a predetermined period corresponding to an amount of change occurred in a measured flow rate value;
• and
• a step of identifying an appliance which uses the fluid or leakage by determining whether or not the measured flow rate value difference is a predetermined threshold or less.

A flow rate measuring apparatus comprising:

• a flow rate measurement section that measures a flow rate of a fluid flowing in a flow passage;
• a flow rate information storage section that stores a flow rate value measured by the flow rate measurement section;
• a measured flow rate value difference calculation section that calculates a measured flow rate value difference within a predetermined period corresponding to an amount of change occurred in a measured flow rate value;
• and
• an appliance operation state determination section that determines an operating state of an appliance which uses the fluid, by determining whether or not the measured flow rate value difference is a predetermined threshold or less.