Matsushita Electric Industrial Co., Ltd.

The High Pressure Gas Safety Institute of Japan

Shinichi Nakane

Takashi Uno

Mitsuo Namba

Hiroshi Horii

Kazutaka Asano

Shinzo Kato

Masahiro Yamamoto

Shinji Miyauchi

Naoyoshi Maehara

Kazushi Yamamoto

Yoshio Horiike

Yasukiyo Ueda

Kunio Kimata

Makoto Tsuboi

Jyunichi Saito

Reppei Uematsu

Masafumi Nakagawa

Namba Mitsuo

Katsunori Tanie

Uematsu Reppei

A wireless data collection systemincludes a wireless terminalprovided for an apparatus, a wireless base stationfor communicating with the wireless terminalthrough a wireless communication to collect data on the apparatus, and a central station apparatusfor communicating with the wireless base stationthrough a line. The wireless base stationincludes a control sectionfor controlling an operation of the wireless base station, an information obtaining sectionfor obtaining change information for changing an operation of the control sectionfrom outside the wireless base station, and a rewriting sectionfor rewriting control information defining the operation of the control sectionbased on the change information.

Wireless data acquisition system

Piping leakage detecting apparatus

An abnormality detecting apparatus constantly monitors even a slight amount of gas which has leaked by checking a gas supply pipe when it is determined that the pressure regulating function of a pressure regulator is abnormal. The abnormality detecting apparatus detects an abnormality of the regulated pressure of a pressure regulator appropriately by comparing the regulated pressure with a predetermined low value of a pressure regulating range when the gas flow rate is high and with a predetermined high value of a pressure regulating range when the gas flow rate is low.

Method and apparatus for detecting abnormality in gas supply equipment

A flow rate of gas is measured with a flow rate measurement means and a 'consumption state' defined with a combination of maximum flow rate, the total amount and a consumption time of the gas is therefor detected. The consumption state is compared with a reference consumption condition which is represented by a predetermined consumption state, and when the consumption state exceeds the reference consumption condition, supply of the gas is interrupted. Furthermore, a monitor range of the consumption state is formed, and when a consumption state is present in the monitor range, the reference consumption condition is changed.

Gas shutoff apparatus

A gas flow rate is measured and therefrom 'consumption state' defined by combination of maximum flow rate, increase of total amount and a consumption time of the gas is detected, and then, the consumption state is compared with a 'reference consumption condition' representing a predetermined consumption state; and when the 'consumption state' exceeds the 'reference consumption condition', a gas control means interrupt supply of the gas; and thereafter, after restoration of the gas control means to gas supply state, the actual gas consumption state is measured for a predetermined time counted by timer when the gas flow rate exceeds a predetermined level.

A flow rate of a gas is measured by a flow rate measurement means, and when the flow rate exceeds a predetermined reference value, occurrence of an abnormal state such as escape of the gas is detected and a shutoff means is automatically closed by control of a microcomputer, futhermore, 'a gas consumption pattern' showing combination of an amount of gas consumption, maximum flow rate and continuous consumption time of a consumer is observed in a predetermined time period, and a reference value of the gas consumption pattern is decided on the basis of the consumption state, moreover, a decision level of abnormal state is varied and set as a new reference values corresponding to the gas consumption pattern.

An atomizing apparatus comprises a body having a chamber into which liquid is supplied. A nozzle member is secured to the body to define a front vibrating member of said of the chamber, the nozzle member having at least one nozzle opening. A capacitive piezoelectric transducer is secured to the nozzle member for producing pressure rises in the liquid to cause the portion of the liquid in proximity to the nozzle opening to be ejected therethrough to the outside. The piezoelectric transducer is connected to an inductance element to form a resonant circuit. An amplifier is connected with the resonant circuit to form a self-oscillating loop to amplify the signal in the loop to sustain oscillation at a frequency variable as a function of the temperature-dependent capacitance of the piezoelectric transducer.

Atomizing apparatus employing a capacitive piezoelectric transducer

Growing community of inventors

Yamatokoriyama, Japan

Shinichi Nakane