Panasonic Corporation

Matsushita Electric Industrial Co., Ltd.

The High Pressure Gas Safety Institute of Japan

Hirozumi Nakamura

Hajime Miyata

Mitsuo Yokohata

Kazuo Kubo

Yasuo Koba

Kazutaka Asano

Youichi Itou

Mitsuo Namba

Tadanori Shirasawa

Hisashi Saito

Takuhisa Ootani

Yuuji Fujii

Shigeru Murakami

Sumiko Murakami, Legal Representative

Kazunori Ueyama

Setting safety function, as appropriate, according to a user environment is enabled, thereby enhancing safety function. According to selection information from a safety function selection unit, a function setting unitsets arbitrary function among a plurality of functions as safety function pertaining to usage of a gas. When operating conditions for safety function are fulfilled, a monitoring unitdetects malfunction, which would arise during usage of a gas, and outputs a safety signal to a control unitin accordance with the set safety function. In accordance with a safety signal from the monitoring unit, the control unitcuts off a gas supply when an event fulfilling operating conditions for the set function has arisen. When an event fulfilling operating conditions for an unset function has arisen, a communication unitreports occurrence of malfunction pertaining to unset function to the monitoring center

Gas meter and gas safety system

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

The present invention is intended to make it possible to set security functions as necessary depending on usage environment, etc. and to improve the security functions; a function setting sectionsets security function information received from the outside via a communication line as security functions regarding the user of gas. According to the set security function, in the case that the operation conditions of the security function are satisfied, a monitoring sectiondetects a problem during the use of gas and outputs a security signal to a control section. Based on the security signal from the monitoring section, the control sectionshuts off the supply of gas in the case that a phenomenon satisfying an operation condition of the set function having been set has occurred.

Gas meter and gas security system

To provide a flowmeter capable of enhancing metering resolution to thus effect accurate metering. When a fluid to be measured is supplied to or discharged from a metering chamber, a membraneprovided in the metering chamberis reciprocally actuated, and a rotation section Rperforms rotational movement in association with reciprocal movement of the membrane. At this time, since the rotation section Ris provided with a magnetor a direction sensor, the magnetor the direction sensoralso effects rotational movement. The direction sensordetects rotational movement, to thus determine a relative position between the membrane and the rotation section. Thus, the position of the membranecan be detected, and metering resolution is enhanced. Thus, accurate metering can be performed.

Flow rate measuring device

Growing community of inventors

Nara, Japan

Hirozumi Nakamura