Flow rate measurement apparatus and gas supply system

摘要

If determination is erroneous in appliance determination according to the instantaneous flow rate output from a flow rate measurement unit, a flow rate measurement apparatus registers it as an unknown appliance, rechecks the flow rate of the unknown appliance, and makes it possible to enhance the accuracy of the appliance determination. The apparatus has a flow rate measurement unit 3, a flow rate information storage unit 8 for storing the flow rate value of the flow rate measurement unit 3, a computation unit 6 for finding a difference value between the flow rate values output from the flow rate measurement unit 3, an appliance registration storage unit 7, an appliance determination unit 9 for determining an appliance, and an unknown appliance registration unit 10 for registering information according to which the appliance cannot be determined.

主权项

1. A flow rate measurement apparatus comprising:
a flow rate measurement unit for measuring a flow rate of a fluid flowing into a flow path; a flow rate information storage unit for storing a flow rate value measured in the flow rate measurement unit; an appliance registration storage unit for storing the flow rate value for each appliance of a plurality of appliances; an appliance determination unit for making a comparison between a flow rate pattern of the flow rate value measured in the flow rate measurement unit and a flow rate pattern of an appliance determination value stored in the appliance registration storage unit and determining a use state of an appliance connected to a downstream side of the flow rate measurement unit solely from the flow rate value; and an unknown appliance registration unit for registering the use state as unknown data when there is a flow rate pattern according to which the appliance determination unit cannot determine the appliance based on information in the appliance registration storage unit; and a recheck unit for rechecking the unknown data based on the data in the flow rate information storage unit to determine if registration data exists in the unknown appliance registration unit.