Panasonic Corporation

Shigeru Murakami

Yasuo Koba

Kouichi Ueki

Kazutaka Asano

Takuhisa Ootani

Hirozumi Nakamura

Yuuji Fujii

Sumiko Murakami, Legal Representative

It is an objective to appropriately assure a function of limiting use of appliances that cause changes in quantities of gas used. There are provided a flow detection unit; a flow computing unit; an average flow computing unit; a flow storage unitthat records an average flow quantity value; a flow change determination unitthat determines whether there is a flow change; a flow registration unitthat registers a flow quantity corresponding to a flow change or deletes a registered flow quantity close to the flow change when the flow change determination unithas determined an incremental or decremental change; a flow memory unit; a flow change correction memory unitthat, when the flow change determination unit has determined presence of a change and when only the maximum flow quantity is registered, determines whether or not a sum of registered flow quantities deleted in the past and an average flow fall within a predetermined range; a determination period unitthat, when no flow change is determined to have been for a predetermined time period, deletes flow quantities in the flow memory unit and the registered flow quantity, thereby performing re-registration; a monitoring value memory unit; an abnormality determination unitthat compares the flow quantity value in the flow registration unit with a determination value of the monitoring value memory unit, thereby determining presence or absence of an abnormality; and an operating time correction unitthat outputs a re-registration correction signal through use of a determination period unit.

Gas cutoff apparatus

A gas appliance monitoring apparatus includes a flow rate measurement unit for measuring the gas flow rate, a gas shut-off valve for shutting off a gas flow path at the abnormal time, an information storage unit for storing measurement results of the flow rate measurement unit, a wireless module for transmitting and receiving information, and a communication switch unit for switching a communication frequency band. The wireless module is integrated with a control circuit board forming the flow rate measurement unit and is housed in a gas meter. The wireless module has at least a communication frequency band with a base station and a communication frequency band with a plurality of gas appliances, and transmits an operation start signal detected by a specific gas appliance as appliance information using an appliance wireless module. The continuous use time of the specific appliance is detected or is changed based on the information.

Gas appliance monitoring apparatus

Growing community of inventors

Nara, Japan

Shigeru Murakami