公开(公告)号：US20250116533A1

公开(公告)日：2025-04-10

申请号：US18833025

申请日：2023-02-13

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Masumi YAMASHITA ,  Takashi WATANABE ,  Tadanori SHIRASAWA ,  Takahiro UEDA

IPC: G01D4/02 ,  G01D4/00

Abstract: A gas meter includes a flow rate measurer that is located at a gas passage and measures a flow rate of the gas flowing through the passage, a self-diagnoser that performs self-diagnosis, and a vibration detector that detects vibration. The gas meter also includes a calculator that calculates an earthquake index value based on the detected vibration, the earthquake index value indicating the scale of an earthquake, a blocker that switches from an open state to a closed state of the passage when the earthquake index value is not less than a predetermined value, and a restoring method determiner that, when the blocker is in the closed state, determines a restoring method of restoring the blocker from the closed state to the open state based on a result of the diagnosis by the self-diagnoser and the earthquake index value.