Abstract: A gas flow detecting device of the present invention, comprises a gas flow obtaining unit, and a control unit, wherein the control unit is configured to determine at second period intervals, whether or not the usage gas flow of a fuel cell system can be obtained, based on the gas flow obtained by the gas flow obtaining unit, and the control unit is configured to, when the control unit determines that the usage gas flow of the fuel cell system can be obtained, calculate a total usage gas flow of the fuel cell system, based on a change amount of the gas flow obtained by the gas flow obtaining unit, and a usage gas flow of the fuel cell system which is updated just before the determination, and the control unit is configured to, when the control unit determines that the usage gas flow of the fuel cell system cannot be obtained, deem the usage gas flow of the fuel cell system which is updated just before the determination, as the usage gas flow of the fuel cell system in a period in which the usage gas flow canno

Abstract: A fuel instrument determination device comprises a first obtaining section for obtaining a slope of a change in a fuel flow rate in a first measurement period; a second obtaining section for obtaining a slope of a change in the fuel flow rate in a second measurement period which is different in length from the first measurement period; and a determiner section for determining a fuel instrument, using the slope of the change in the fuel flow rate in the first measurement period and the slope of the change in the fuel flow rate in the second measurement period.

Abstract: A gas meter of the present invention includes a flow measuring section for measuring a flow value of a gas flowing through a fluid passage connected to a gas instrument at each specified time interval; a measurement flow memory for storing the measured flow value; and a fuel cell determiner section for determining that the instrument using a gas is a fuel cell, when a condition A and a condition B are satisfied, in which the condition A is such that a maximum value of determination target flow values is equal to or less than a second predetermined value, the determination target flow values being a predetermined number of flow values measured before and after a reference flow value which is equal to or greater than a first predetermined value and is closest to the first predetermined value, the determination target flow values being included in stored flow values, and the condition B is such that a difference value derived by subtracting from each of all of the determination target flow values, an average val

Abstract: A newly-purchased gas appliance is detected and reported to a gas administrator. There are provided a flow rate detection portion, a flow rate calculation portion, a code extraction portion, an initial code learning portion, a code maintaining portion, a code judging portion, an additional code learning portion, and an external communication portion. The code extraction portion extracts a code pattern E. The initial code learning portion gathers similar code patterns E as a gas appliance code pattern F. The code judging portion judges whether or not the code pattern E matches any of gas appliance code patterns F held by the code maintaining portion within a predetermined range. The code patterns E that have failed to match are subjected to additional identification of a gas appliance in the additional code learning portion.

Abstract: A gas instrument determiner section included in a flow meter device determines whether or not a gas instrument in use is a fuel cell, by comparing an actual measurement value of a gas flow measured at first measurement time intervals in a first determination operation period from when inflowing of the gas starts until a predetermined time lapses, to determination flow data, and by comparing an actual measurement value measured at second measurement time intervals longer than the first measurement time interval in a second determination operation period which ends after the first determination operation period ends, to determination flow data. This makes it possible to accurately determine the gas instrument in use even when the gas instrument in use is the fuel cell.

Abstract: A gas instrument determiner section (12) included in a flow meter device (10A) determines a kind of a gas instrument (20) in use by utilizing a flow pattern in which a range of increase/decrease in a gas flow is within a flow zone set in a fuel cell (21) as a flow pattern which is a pattern of a gas flow which changes over time when the fuel cell (21) is included in the gas instrument (20) in use. This makes it possible to accurately determine whether or not the gas instrument in use is the fuel cell while effectively suppressing unnecessary gas consumption.

Abstract: 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 120, a function setting unit 116 sets 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 unit 112 detects malfunction, which would arise during usage of a gas, and outputs a safety signal to a control unit 114 in accordance with the set safety function. In accordance with a safety signal from the monitoring unit 112, the control unit 114 cuts 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 unit 124 reports occurrence of malfunction pertaining to unset function to the monitoring center 200.

Abstract: A gas shutoff device of the present invention is configured such that a control section determines that it inhibits a shutoff section from being returned from a shutoff state to a supply state, when a vibration has been detected by a vibration detecting section and a fluid pressure measured by a pressure measuring section has decreased to a value equal to or less than a predetermined pressure value. For example, the control section causes the shutoff section to switch to the shutoff state and disenables the return section to return the shutoff section to the supply state, when one of the vibration and the fluid pressure decrease has been detected and then the other has been detected within a predetermined time.

Abstract: A problem of the present invention is to provide a flow rate measurement device which is capable of simplifying calculation, reducing the amount of memory necessary for calculation, absorbing variations in the flow rate which changes in various ways depending on the state of usage, and improving identification precision of appliances with a configuration which extracts characteristics of appliances. The flow rate measurement device monitors and determines the change in the flow rate measured by a flow rate measurement unit, and extracts and determines codes obtained by a differential conversion unit and appliance characteristic flow rates representing the characteristics of gas appliances, thereby identifying the gas appliances in which appliance characteristics vary depending on the state of usage.

Abstract: A problem of the present invention is to provide a flow rate measurement device which is capable of simplifying calculation, reducing the amount of memory necessary for calculation, absorbing variations resulting from manual operation or ignition state when the appliances are used alone or in combination, and improving appliance identification precision of appliances having similar characteristics with a configuration which extracts characteristics of appliances. The flow rate measurement device identifies the appliances with high precision by extracting characteristics of gas appliances from code sequences into which a differential conversion unit converts, at regular time intervals, differentials by a first calculation unit which calculates differentials at regular time intervals in the flow rates measured by a flow rate measurement unit and by a second calculation unit which calculates differentials at time intervals different from the first calculation unit.

Abstract: A problem of the present invention is to provide a flow rate measurement device which is capable of simplifying calculation, reducing the amount of memory necessary for calculation, absorbing variations resulting from manual operation or ignition state when appliances are used alone or in combination, and improving appliance identification precision with a configuration which extracts characteristics of appliances. The flow rate measurement device monitors and determines the change in a flow rate measured by a flow rate measurement unit, monitors and determines the code obtained by differential conversion unit, extracts appliance characteristic flow rates representing the characteristics of the gas appliances, and compares them with the appliance-specific characteristics, thereby identifying the gas appliances.

Abstract: 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 section 1116 sets 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 section 112 detects a problem during the use of gas and outputs a security signal to a control section 114. Based on the security signal from the monitoring section 112, the control section 114 shuts off the supply of gas in the case that a phenomenon satisfying an operation condition of the set function having been set has occurred.

Abstract: A newly-purchased gas appliance is detected and reported to a gas administrator. There are provided a flow rate detection portion, a flow rate calculation portion, a code extraction portion, an initial code learning portion, a code maintaining portion, a code judging portion, an additional code learning portion, and an external communication portion. The code extraction portion extracts a code pattern E. The initial code learning portion gathers similar code patterns E as a gas appliance code pattern F. The code judging portion judges whether or not the code pattern E matches any of gas appliance code patterns F held by the code maintaining portion within a predetermined range. The code patterns E that have failed to match are subjected to additional identification of a gas appliance in the additional code learning portion.

Abstract: The present invention provides a gas shutoff device that prevents tampering procurement of gas or tamper due to stealing of the gas shutoff device.

Abstract: The present invention provides a flow rate measuring device capable of simplifying calculation, reducing the amount of a memory required for the calculation, absorbing variations due to manual operation and depending on the state of ignition, and improving the accuracy of appliance identification by using a configuration in which the features of appliances are extracted. The flow rate measuring device is formed of a difference value conversion unit 112 for converting the difference values of the flow rate measured at constant time intervals by an ultrasonic flowmeter 104; an appliance feature extraction unit 214 for creating an appliance feature code string indicating the feature of each appliance by making comparison and judgment using the third last code, the second last code, the last code and the current code of the codes obtained at constant time intervals and by performing code deletion, etc.

Abstract: It is an object to acquire in real time information about the type of an appliance used at home, a cumulative time elapsed from installation of the appliance, and the like; preliminarily acquire inspection timing; and prevent occurrence of a problem in the appliance.

Abstract: A challenge to be met by the present invention is to enable appropriate setting of safety function according to a use environment and enhance safety function. An IC card (118) stores data pertaining to the quantity of available gas and at least one safety function program. An IC card reading unit (122) reads information stored in the IC card (118). From the read information, an IC card determination unit (126) determines whether or not the IC card (118) is normal. A safety function detection unit (128) detects a safety function program from the read information and stores the program in a safety function storage unit (130). When the IC card (118) is normal, a function setting unit (116) imparts a safety function program to a monitoring unit (112). A remaining available quantity count unit (124) determines a remaining quantity of available gas from the read quantity of available gas and a flow determined by a flow computing unit (110).

Abstract: 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 section 1116 sets 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 section 112 detects a problem during the use of gas and outputs a security signal to a control section 114. Based on the security signal from the monitoring section 112, the control section 114 shuts off the supply of gas in the case that a phenomenon satisfying an operation condition of the set function having been set has occurred.

Abstract: 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 120, a function setting unit 116 sets 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 unit 112 detects malfunction, which would arise during usage of a gas, and outputs a safety signal to a control unit 114 in accordance with the set safety function. In accordance with a safety signal from the monitoring unit 112, the control unit 114 cuts 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 unit 124 reports occurrence of malfunction pertaining to unset function to the monitoring center 200.

Abstract: An object of the invention is to appropriately control the use limit function of an appliance according to the concentration level of CO gas. A gas shutoff device is made up of a flow rate registration unit 28 for registering as an appliance flow rate, an average flow rate found by classifying and storing in a flow rate storage unit 26 after flow rate detection, a CO gas leakage determination unit 29 for inputting an output signal responsive to the concentration level of CO gas from a CO alarm 20, an appliance estimation unit 30, when a signal is output by the CO gas leakage determination unit 29 and the flow rate is registered in the flow rate registration unit 28, for storing a flow rate pattern group stored in the flow rate storage unit 26 and the registered flow rate and estimating a CO gas leakage appliance, an appliance flow rate storage unit 31 for storing the flow rate pattern group, and a communication unit 35 for reporting appliance information.