An object of the present invention is to perform a suitable registration of a flow rate of appliances to promote the optimization of a usage time limitation function. In a gas shut-off device according to the invention, a flow rate detection unit measures a flow rate, a flow rate calculation unit calculates values of instant flow rates from a detection value, an average flow rate calculation unit obtains an average flow rate from the obtained instant flow rates, a flow rate change decision unit decides the presence or absence of a change in the flow rate based on the obtained average flow rate, a flow rate storage unit stores a value of the obtained average flow rate, an increase flow rate registration unit registers an amount of the flow rate change at the time of increase change decision by the flow rate change decision unit, a decrease flow rate re-registration unit reduces the registered flow rate near an amount of the flow rate change at the time of decrease change decision by the flow rate change decision unit, and re-registers and replaces it with a value of the average flow rate obtained by the average flow rate calculation unit after the reduction of the registered flow rate, and a shut-off unit shuts off the supply of gas when decided as an abnormality by an abnormality decision unit from the registered flow rate and a decision value.

Gas shut-off device

A method of inference of appliance usage from a point measurement on a supply line, said supply line being common to multiple appliances and/or components of appliances comprises the steps of: obtaining data from said measurement point; sampling power and reactive power at intervals substantially throughout periods of operation of said appliances or components of appliances corresponding to appliances or components of appliances being in ON and/or OFF modes of use; identifying characteristics of events by assessing power and reactive power change during an event; and by assessing one or more additional characteristics derivable from said power and reactive power to characterise an appliance; grouping events and/or cycles of events into clusters of similar characteristics; and inferring appliance usage based on said grouping.

A method of inference of appliance usage. data processing apparatus and/or computer software

Use limit function of an appliance having a variable quantity of gas used is secured adequately. The gas cut-off device comprises a flow rate detection means (10), a flow rate operating means (11), an average flow rate operating means (12), a means (13) for storing the average flow rate value, a means (14) for judging variation in flow rate, a flow rate registration means (15) for registering variation in flow rate or deleting a registered flow rate close to the variation in flow rate when the flow rate variation judging means (14) judges increment or decrement of variation, a flow rate storage means (16), a flow rate variation correction storage means (17) for judging whether the total registered flow rate deleted in the past and the average flow rate fall within a predetermined range when the flow rate variation judging means judges a variation and only the maximum flow rate is registered, a judgment period means (18) for deleting the flow rate in the storage means and the registered flow rate when a judgment is made that the flow rate has not varied for a predetermined period and registering them again, a monitor value storage means (19), a means (20) for judging whether an abnormality exists or not by comparing the flow rate of the flow rate registration means with the judgment value of the monitor value storage means, and a use time correction means (22) for outputting a correction signal when the judgment period means performs registration again.

Gas cut-off device

A utility data processing system for processing data relating to consumption of a utility comprises: a fact memory for storage of facts relating to utility consumption received from fact sources, at least one fact source module for deriving facts from utility consumption data and adding the derived facts to the fact memory, an inference module for inferring new facts relating to utility consumption from one or more facts stored in the fact memory, and an interface module.

Utility data processing system

An object is to prevent a mistaken shutoff caused by the mistaken registration of an appliance of which an amount of gas used changes. An individual flow registration maintenance unit maintains a registered flow rate deleted due to an increase/decrease in flow rate, again, performs determination on the flow rate maintained when a new flow rate is registered or a flow rate added with the maintained flow rate, and in the case where it is regarded to be the same, re-register the maintained flow rate.

Gas shutoff device

Flow rate measuring device and method for identification of a gas appliance

Flow rate measuring device and method of measuring flow rate

PROBLEM TO BE SOLVED: To provide technology for accurately discriminating equipment using fluid from a point of view of the possible existence of a flow rate change pattern SOLUTION: A ultrasonic flowmeter 7 measures the flow rate of gas flowing in a flow path 6, as a measured flow rate When the plurality of equipment use gas, a passage route generation part 18 generates a plurality of passage route candidates showing gas using flow rate histories for every equipment in accordance with the measured flow rate change pattern consisting of a measured flow rate measured by the ultrasonic flowmeter 7 An equipment discriminating part 11 selects the acceptable passage route for every equipment from the plurality of passage route candidates and discriminates the equipment using the fluid COPYRIGHT: (C)2009,JPO&INPIT

Flow rate measuring device and its program, flow rate measuring method, and fluid supply system

This method for setting a flow quantity measurement device provided with a main flow path (2) having a rectangular cross-section, a plurality of flow paths formed by disposing a plurality of partition plates in layers in the main flow path (2), a pair of ultrasonic wave transceivers (11, 12) disposed in an upstream part and a downstream part of a measurement flow path (8) that is a flow path among the plurality of flow paths, a propagation time measurement means (20) for measuring the propagation time of ultrasonic waves between the pair of ultrasonic wave transceivers (11, 12), and a flow quantity calculation means (21) for calculating the actual flow quantity by multiplying a measured flow quantity by a correction factor is provided with: a step (A) of predicting the correction factor throughout a measured flow quantity range from the flow velocity distribution of an entrance part (32) of the main flow path (2); and a step (B) of, on the basis of the correction factor predicted in step (A), setting the length of the flow path in the direction in which the partition plates are stacked in layers such that the correction factor is constant throughout the measured flow quantity range.

Method for setting flow quantity measurement device

A behavior different from those of the steady state of an appliance during use of the appliance is detected, and an improper use can be detected. A gas meter (100) has an ultrasonic flow meter (104) which measures the flow of gas flowing through a passage (102). A new event detecting section (108) detects a nonsteady behavior different from those in the steady state in an environment where fluid is used as a new event which is not present in the past use environment from the flow pattern of the measured flow. With this, an improper use such as ignition failure or malfunction can be detected. A transmitting/receiving section (110) transmits a new event signal representing a new event of a nonsteady behavior detected by the new event detecting section (108) through a network (300) to a center device (200).

Hajime Miyata

Papers

Flow rate measuring device and method for identification of a gas appliance

Flow rate measuring device and method of measuring flow rate

Flow rate measuring device and its program, flow rate measuring method, and fluid supply system

Method for setting flow quantity measurement device

Flow measuring device, communication system, flow measuring method, flow measuring program, and fluid supply system