JP4286618B2 - Fluid usage status detection method and system, and gas meter system - Google Patents

Description

The present invention is based on the fluid usage time and flow rate detected based on the meter reading value of a flow meter such as a water meter or a gas meter. state detection method and system, to a gas meter system as well.

  Electronic meters are known as flow meters such as water meters and gas meters, and tap water can be used at electronic counters installed at locations distant from the flow meter or at management center terminals connected via communication lines. It is possible to monitor the usage status of fluids such as gas and gas and calculate usage fees.

  For example, an electronic water meter detects the rotational state of an impeller that rotates according to the flow rate installed in a measuring unit connected to a water pipe in a non-contact state, and based on this, the flow rate used in an electronic unit with a built-in microcomputer, The usage time is calculated, and the calculation result is displayed on the liquid crystal display.

  In general, the detection result of the electronic water meter is transmitted in a telegraphic form to an electronic counter installed at a remote location, and various integrated values are calculated based on the detection result supplied from the water meter in the electronic counter. Calculation and display are performed. Furthermore, the detection result of the water meter, the integrated value at the electronic counter, etc. are transmitted to the management center terminal via the communication line via the electronic counter and the transmission device, and the management center where the management center terminal is arranged. , The use of tap water in each tap water use place, the calculation of water charges, etc. are performed.

An object of the present invention utilizes such a flow meter system, proposes a gas meter system of fluid usage state in a fluid point of use more accurately fluid usage detection method and system which can be grasped, as well There is.

Another object of the present invention is based on the detection result of the fluid usage state in a fluid point of use, proposed gas meter system fluid usage detection method and system capable of employing the billing system of diverse usage fees, as well There is to do.

Furthermore, the problem of the present invention is to provide a fluid use situation that can take measures to save fluid such as water saving based on the detection result of the fluid use state at the fluid use place, or can detect a human abnormality in the fluid use place. detection methods and systems, is to propose a gas meter system as well.

The fluid usage status detection method of the present invention comprises:
Supply fluid such as tap water and gas to multiple fluid use equipment installed in the fluid use place through the fluid pipe with the flow meter attached,
Based on the result of meter reading by the flow meter, a use flow pattern representing a time change of a typical use flow rate when each fluid use device is used at the fluid use place is determined and stored for each flow use device,
Based on the result of meter reading by the flow meter in a predetermined measurement period, a total fluid usage amount in the measurement period and a total usage flow pattern representing a temporal change in the total fluid usage flow are obtained,
Based on the flow rate pattern of each fluid use device, a combination of the fluid use devices that can obtain a total fluid use amount that matches or is closest to the total fluid use amount is obtained, and each fluid included in the obtained combination is obtained. Estimating that the device used is a fluid device used during the measurement period,
Based on the use flow pattern of each fluid use instrument included in the obtained combination and the total use flow pattern, the order of use or use time zone of each fluid use instrument in the measurement period is estimated. .

  Thus, in the present invention, based on the total fluid usage (in other words, the area of the total usage flow rate pattern) obtained from the meter reading value of the flow meter, the combination of fluid usage instruments that are determined to be used is estimated, The use time zone of each fluid use device included in this combination is obtained. Therefore, by using such an area evaluation method, it is possible to narrow down the number of combinations of fluid using instruments that are considered to be used in a short time, as compared with the case of using only the flow rate pattern of each fluid using instrument. In particular, since the increase in the number of combinations when the number of installed use tools increases, the combination of use tools can be specified easily.

  Here, it is possible to determine the presence or absence of fluid leakage based on the use flow pattern of the fluid use device estimated to have been used during the measurement period and the total use flow pattern. In addition, when it is determined that fluid leakage has occurred, it is desirable to close the fluid pipe.

  Next, the fluid use device is classified into at least a first group having a high degree of necessity and a second group having a low degree of necessity according to the necessity at the place where the fluid is used. In the case where the fluid use instrument that is estimated to belong to the second group belongs, the flow rate supplied through the fluid pipe may be reduced under certain conditions. The certain condition includes a shortage of fluid on the fluid supply side.

  In addition, based on the estimation result of whether or not the fluid using instrument is used, an integrated value of the fluid flow rate of each fluid using instrument in a predetermined period is obtained, and the fluid usage fee of the fluid using instrument is calculated based on the integrated value. You can also

  Furthermore, it is possible to determine whether or not an abnormality has occurred in a person at the fluid use location based on the use flow rate pattern obtained by the specific fluid use device used by a person and the total use flow rate pattern. . In this case, a bath can be mentioned as a specific fluid use apparatus. Further, when it is estimated that the specific fluid use device used by a person is not used for a predetermined period or more, it can be determined that an abnormality has occurred in the person at the fluid use place.

  Next, when obtaining the use flow rate pattern, a fluid pressure pattern representing a temporal change of the fluid pressure level of the fluid is detected, and the fluid use pattern used during the measurement period is also taken into consideration. If the combination of instruments is estimated, the fluid using instrument used can be identified more reliably.

On the other hand, the fluid usage status detection system of the present invention is
A flow meter attached to a fluid pipe that supplies fluid to a place where fluid such as tap water or gas is used;
A use instrument information storage unit that stores and holds a plurality of fluid use instrument information installed in the fluid use place;
Based on the result of meter reading by the flow meter, a used flow pattern representing a time change of a typical used flow rate when each fluid using instrument is used at the fluid use place is stored and retained for each flow using instrument. A pattern storage unit;
A use instrument estimation unit that estimates a fluid use instrument actually used from the plurality of fluid use instruments installed in the fluid use place;
The instrument used estimation unit is
Based on the result of meter reading by the flow meter in a predetermined measurement period, a total fluid usage amount in the measurement period and a total usage flow pattern representing a temporal change in the total fluid usage flow are obtained,
Based on the flow rate pattern of each fluid use device, obtain a combination of the fluid use devices that can provide a total fluid use amount that matches or is closest to the total fluid use amount,
Estimating that each fluid use device included in the obtained combination is a fluid use device used during the measurement period,
Based on the use flow pattern of each fluid use instrument included in the obtained combination and the total use flow pattern, a use time zone of each fluid use instrument in the measurement period is estimated.

  Here, based on the use flow rate pattern of the fluid use device estimated to have been used during the measurement period and the total use flow rate pattern, a leakage determination unit that determines whether or not there is a fluid leak It is desirable. In this case, a control valve capable of opening and closing the fluid pipe, and a valve control unit that drives the control valve and closes the fluid pipe when it is determined that fluid leakage has occurred. It is desirable.

  A flow control valve for controlling the flow rate of the fluid pipe; and a valve control unit for driving and controlling the flow rate control valve. The use instrument information storage unit includes a plurality of fluid use instruments. Accordingly, the fluid use device that is stored and held in a state classified into at least a first group having a high degree of necessity and a second group having a low degree of necessity is estimated to be used. In the case of belonging to the second group, the valve controller may drive the flow rate control valve under certain conditions to reduce the flow rate supplied through the fluid pipe. desirable. In this case, the certain condition includes an insufficient supply of fluid on the fluid supply side.

  Further, based on an estimation result of whether or not the fluid use instrument is used, an integration unit for each use instrument that obtains an integrated value of the fluid flow rate of each fluid use instrument in a predetermined period, and a fluid usage charge unit price of each fluid use instrument And a charge calculation unit that calculates a fluid use fee for each fluid use device based on the accumulated value by the use device-specific accumulation unit and the storage contents of the fee storage unit. .

  Furthermore, based on the fluid usage pattern and the total usage flow rate pattern, the fluid usage pattern storage unit that stores and holds the fluid usage pattern obtained by the specific fluid usage instrument used by a human, the fluid usage location It is possible to adopt a configuration including an abnormality determination unit that determines whether or not an abnormality has occurred in a human. In this case, the specific fluid use device may include a bath.

  In addition, based on the detection result of the use instrument estimation unit and the flow meter, if a specific fluid use instrument used by a person at the fluid use place is not used for a predetermined period or more, the person at the fluid use place is notified. A configuration including an abnormality determination unit that determines that an abnormality has occurred can be employed.

  Next, a fluid pressure detecting means for detecting a fluid pressure level of the fluid in the flow meter when each fluid using instrument is used, and a fluid pressure pattern for storing the fluid pressure pattern obtained by the fluid pressure detecting means A storage unit, and the use instrument estimation unit may determine a combination of fluid use instruments used during the measurement period in consideration of the fluid pressure pattern.

  On the other hand, at least one of the estimation result of the used appliance estimation unit, the determination result of the leakage determination unit, the calculation result of the charge calculation unit, the determination result of the abnormality determination unit, and the calculation result of the integration unit is displayed. A configuration including an electronic counter can be employed.

  Of the estimation results at the management center terminal and the appliance estimation unit, the discrimination result of the leakage discrimination unit, the calculation result of the charge calculation unit, the discrimination result of the abnormality discrimination unit, and the calculation result of the integration unit It is also possible to employ a configuration including at least one transmission unit that transmits to the management center terminal via a communication line.

  Further, of the estimation result of the management center terminal and the appliance estimation unit, the determination result of the leakage determination unit, the calculation result of the charge calculation unit, the determination result of the abnormality determination unit, and the calculation result of the integration unit An electronic counter that displays at least one, an estimation result in the appliance estimation unit, a discrimination result in the leak discrimination unit, a calculation result in the charge calculation unit, a discrimination result in the abnormality discrimination unit, and a calculation result in the integration unit A configuration may be adopted in which at least one of them is provided with the electronic counter via a communication line and a transmission unit that transmits the electronic counter to the management center terminal via the electronic counter.

  Here, the electronic counter can be configured to include the estimation unit, the determination unit, and the storage unit. Further, the management center terminal may be supplied with estimation results and discrimination results at the respective units via the Internet. Furthermore, the structure provided with the internet server which operates the browsing site which can browse the estimation result in each said part and the said discrimination result via the internet is also employable. Furthermore, the charge and pattern settings can be changed from the Internet connection terminal via the Internet. In addition, the charge and pattern settings may be changeable from the electronic counter and / or the management center terminal.

Next , the present invention provides a gas meter system that includes a gas meter attached to a gas pipe that supplies gas to a gas use place, and calculates the gas use time and the use flow rate at the gas use place by the gas meter: the gas use place A usage flow rate pattern storage unit that stores and holds a usage flow rate pattern for each time in the gas; a usage instrument information storage unit that stores and holds information on a plurality of gas usage instruments installed at the gas usage location; and the gas meter Gas usage actually used from among a plurality of gas usage instruments installed at the gas usage location based on the usage time and usage flow rate detected by the user, the usage flow rate pattern, and the usage instrument information It is characterized by having a used appliance identification unit for estimating the appliance.
In the present invention, the use appliance identification unit is configured to select from among a plurality of gas use appliances installed at the gas use location based on a use waveform detected by the flow meter and an area of a composite waveform obtained from the use flow rate. The gas use appliances that are actually used are specified, and the use order of the gas use appliances is specified based on the flow rate waveform of the specified gas use appliance and the synthesized waveform.

  Here, it is desirable to have a leakage determination unit that determines whether or not there is a gas leakage based on the estimated gas use appliance, the detected use time and flow rate of the gas.

  A control valve capable of opening and closing the gas pipe; and a valve control unit configured to drive the control valve and close the gas pipe when it is determined that gas leakage has occurred. Is desirable.

  Furthermore, it has a flow rate control valve for controlling the flow rate of the gas pipe and a valve control unit for driving and controlling the flow rate control valve. Accordingly, at least the first group having a high degree of necessity and the second group having a low degree of necessity are stored and retained, and the estimated gas using device is stored in the second group. When it belongs, it is desirable that the valve control unit drives the flow rate control valve under a certain condition to reduce the gas supplied through the gas pipe. Here, the certain condition is, for example, a gas shortage state on the gas supply side.

  Next, based on the estimation results of the gas use appliances, an integration unit for each use appliance that integrates the gas usage for each gas use appliance, a charge storage unit that stores a gas usage charge unit price of each gas use appliance, and the use It is desirable to have a charge calculation unit that calculates a gas use fee for each gas use appliance based on the integrated value by the appliance integration unit and the storage contents of the charge storage unit.

  A fluid flow pattern storage unit that stores and holds a fluid flow pattern of a specific gas use instrument used by a person in the gas use place; the fluid flow pattern, and a gas use time detected by the gas meter In addition, it is desirable to have an abnormality determination unit that determines whether or not an abnormality has occurred in a person at the gas use location based on the use flow rate. Examples of the specific gas-using device include a bath.

  Instead, based on the detection results of the used appliance identification unit and the gas meter, when a specific gas using instrument used by a person at the gas using place is not used for a predetermined period or longer, the person at the gas using place is used. It is also possible to adopt a configuration having an abnormality determination unit that determines that an abnormality has occurred.

  In the present invention, there is further provided a fluid pressure detecting means for detecting a fluid pressure level of the gas in the gas meter, and a fluid pressure pattern storage section for storing a fluid pressure pattern obtained by the fluid pressure detecting means, The use appliance identification unit is configured to use a plurality of gas use appliances installed at the gas use location based on the use time and use flow rate detected by the gas meter, the use flow rate pattern, the use appliance information, and the fluid pressure pattern. It is preferable that the fluid use device actually used is estimated from the above. If comprised in this way, even if a use flow rate pattern changes with fluid pressure levels, the gas using instrument actually used can be estimated correctly.

  The gas meter system having the above-described configuration may further include an electronic counter that displays the estimation results in the used appliance identification unit, the leakage determination unit, the charge calculation unit, the abnormality determination unit, and the integration unit. it can.

  Further, the management center terminal and a transmission unit that transmits the results of the inference by the appliance identifying unit, the leakage determination unit, the charge calculation unit, the abnormality determination unit, and the integration unit to the management center terminal via a communication line. It can also be set as the structure provided with.

  Further, the management center terminal, an electronic counter that displays the estimation results in the used appliance identifying unit, the leakage discriminating unit, the charge calculating unit, the abnormality discriminating unit, and the integrating unit, and the used appliance identifying unit An estimation result, a leakage determination unit, a charge calculation unit, an abnormality determination unit, and a transmission unit that transmits a result of the integration unit to the electronic counter via a communication line, and through the electronic counter, It is also possible to adopt a system configuration in which estimation results, detection results, and discrimination results at each unit are transmitted to the management center terminal via a communication line. The electronic counter can be configured to incorporate the above-described units.

  Next, the estimation result, the detection result, and the discrimination result in each unit may be supplied to the management center terminal using the Internet.

  Moreover, it can also be set as the system configuration | structure provided with the internet server which operates the browsing site which can browse the estimation result in each said part, a detection result, and a discrimination | determination result via the internet.

  Furthermore, a system configuration in which the charge and pattern settings can be changed from the Internet connection terminal such as a personal computer having an Internet communication function via the Internet.

  Similarly, it is possible to adopt a system configuration in which the charge and pattern settings can be changed from the electronic counter or the management center terminal.

  In the present invention, the flow meter is used to estimate the fluid use device used in the fluid use place, and further, the use time zone of the fluid use device used is estimated. Therefore, various usage fee billing systems can be employed based on the estimation result. Also, effective saving measures can be taken when the fluid supply side is short of fluid supply. Furthermore, it is possible to perform health management such as whether or not an abnormality has occurred in a human at the place where the fluid is used.

  Moreover, in this invention, the fluid use instrument considered to be used is specified based on the area evaluation method using the total flow volume pattern in a measurement period. If this area evaluation method is used, the fluid flow device to be evaluated is compared with the case where the fluid flow pattern of each fluid use device is compared with the total flow rate pattern and the combination of the fluid flow devices used is estimated. The number of combinations can be greatly reduced. Accordingly, it is possible to easily and accurately estimate the fluid use device being used, and based on this, it is possible to calculate the integrated value of the fluid use flow rate by each fluid use device with an accuracy that does not impede practical use. Therefore, based on this integrated value, the fluid usage fee of each fluid use device can be calculated with an accuracy that does not hinder practical use.

  Embodiments of an electronic flow meter system to which the present invention is applied will be described below with reference to the drawings. In the following description, an example in which the present invention is applied to a place where tap water is used as a fluid is described. However, the place where a fluid other than water, a fluid such as gas or oil is used is also described. The invention can be applied.

[First embodiment]
The electronic flow meter system of this example has a function to identify and estimate tap water use equipment at the tap water use place in addition to the general tap water use flow and use time calculation and integration function. It has a charge calculation function, a water-saving function during drought, and a health management function that detects human anomalies at locations where tap water is used.

  FIG. 1 is an overall configuration diagram of an electronic flow meter system to which the present invention is applied. The electronic fluid meter system 1 includes a plurality of tap water use locations 2 (2 (1), 2 (2), 2 ( 3)..., For example, a tap water use side system 3 provided in each of a general house, a company, a factory, etc., and a management center side that centrally manages each tap water use side system 3 via the Internet 4 System 5.

  The tap water use side system 3 includes a water pipe 6 laid at a tap water use place 2, an electronic water meter 7 attached to the water pipe 6, and a flow control valve attached to a water pipe portion upstream of the water pipe 6. 8 is provided. Furthermore, an electronic counter 9 installed at a position away from the water meter 7 is provided, and the electronic counter 9 and the water meter 7 are connected via a communication line 10.

  The electronic counter 9 controls the flow control valve 8 and is connected to the transmission device 12 via the communication line 11, and the transmission device 12 is connected to the management center side system 5 via the Internet 4. For example, a bath A, a flush toilet B, a normal water tap C, and the like are connected to the tap water use place 2 (1) as tap water use devices.

  On the other hand, the management center side system 5 includes a management center terminal 15 composed of various peripheral devices such as a personal computer and an input / output device, and a database in which tap water usage conditions at each tap water use place 2 are stored. 16 and an Internet server 17 that operates a browsing site for various information on the Internet.

  The browsing site can be accessed from an Internet terminal 19 such as a personal computer having an Internet communication function.

  Next, FIG. 2 is a functional block diagram of the water meter 7 and the electronic counter 9 in the tap water use side system 3 installed in the tap water use place 2. If it demonstrates with reference to this figure, the electronic water meter 7 will be provided with the impeller 21 arrange | positioned in the measurement chamber formed in the water pipe 6, and this impeller 21 will rotate according to the amount of water of the water pipe 6. FIG. When the impeller 21 rotates, a rotating magnetic field is generated by a permanent magnet 22 attached thereto, and this is detected by a magnetic detection element 23 such as a magnetoresistive element. The rotation state is detected, and based on this, the integrating circuit 25 calculates the tap water usage flow rate, usage time, and the like. The calculated tap water usage flow rate information and tap water usage time information are supplied from the data output circuit 26 to the electronic counter 9 via the communication line 10.

  In the electronic flow meter system 1 of the present example, the electronic counter 9 includes a function for identifying (estimating) the use of tap water at a place where tap water is used, a variety of water rate calculation functions, a water saving function during drought, and tap water. It has a health management function that detects human anomalies at the place of use.

(Identification function of tap water use equipment)
First, the identification function of a tap water use apparatus is demonstrated. The electronic counter 9 of this example includes a use flow rate pattern storage unit 31, a use device information storage unit 32 that stores information about the use devices A, B, and C installed in the tap water use place 2, and a use device identification unit. 33. The following analysis pattern can be considered as the used appliance identification method in the used appliance identification unit 33.

(1) When the usage flow rate and usage time are known Tap water usage equipment such as baths, flush toilets, and automatic washing machines has a clear usage flow rate and usage time. Therefore, it is possible to identify which instrument is being used, not only when these instruments are used alone, but also when a plurality of these instruments are used simultaneously. That is, if the usage flow pattern including the usage flow and usage time of each appliance is stored and retained in the usage flow pattern storage unit 31 for each appliance, the appliance used is determined based on the tap water usage information from the water meter 7. Can be identified.

  For example, as shown in FIG. 4, the usage flow rate pattern in the case of using a flush toilet becomes almost the same pattern every time. Similarly, as shown in FIG. 5, when using a bath, a constant flow rate is used for a fixed time, so that the pattern is almost the same every time. Therefore, if these flow patterns are stored and held in a form associated with the appliance, the appliance used can be identified based on the detected usage flow rate.

(2) When the flow rate and time of use are not clear, such as a manual faucet In the case of a manual faucet (for cooking, car wash, etc.), the flow rate and time of use are arbitrary. As an analysis method in this case, there is a method using graph theory, for example, a method using a neural network.

  In this case, for various appliances that use tap water (faucets, baths, flush toilets, etc.), the amount of water used and the duration of use, which are the main input factors, are measured, and this is used as an output factor for the data file (teacher Data). For the created teacher data, a neural network is created, an error is calculated while changing (learning) the parameters of the neural network, and the parameter with the smallest error is applied to the neural network as a learning result. By applying the actual tap water usage and usage time as input factors to the neural network to which the learning result is applied, the appliance in use is output as an output factor, and thus the appliance used can be estimated (identified).

  If a neural network is used, it is possible to comprehensively specify the appliances used, including the case of (1) above.

(3) In the case of appliances characterized by changes in flow rate and time of use Each tap water appliance has its own usage flow pattern. That is, the rising characteristics of the flow rate at the start of use, the falling characteristics of the flow rate when the use is stopped, and the characteristics of the intermediate portion between the rising edge and the falling edge are different for each device used. Therefore, even if each instrument is used simultaneously, the instrument used can be specified based on these characteristic factors.

  For example, when a person turns the faucet by hand, as shown by the solid line in FIG. 3, the speed at which the faucet is turned is limited, the flow rate does not rise rapidly, and the rising curve becomes stepped. On the other hand, in the case of automatic opening such as a washing machine or the like, as shown by a dotted line in FIG.

  In the case of a flush toilet, as shown in FIG. 4, the flow rate increases rapidly, but the flow rate decreases more slowly than that. Furthermore, in the case of a bath, as shown in FIG. 5, the rise and fall are both steep, and there is almost no change in the flow rate in the middle and is constant.

  In this example, based on the use flow rate and use time calculated by the water meter 7, the use flow pattern at the tap water use place 2 is obtained, and this is typical for each appliance held in the use flow pattern storage unit 31. Compared with a used flow pattern, etc., it is actually used from the tap water use equipment installed in the tap water use place 2 held in the use equipment information storage unit 32 Identifying estimated tap water appliances.

(Procedures for multiple tap water appliances)
Here, the estimation procedure of the tap water use appliance when a some tap water use appliance is used simultaneously or continuously is demonstrated. 6 (a) and 6 (b) are graphs showing typical use flow patterns of the appliances held in the use flow pattern storage unit 31 and examples of waveforms representing the time change of the flow obtained from the water meter 7. FIG. It is. FIG. 7 is a flowchart showing a procedure for estimating a tap water use device. FIGS. 8A, 8B, and 8C are graphs showing waveforms obtained by subtracting one by one a flow rate waveform representing a use flow rate pattern of the tap water use appliance identified from the flow rate waveform shown in FIG. 6A. It is.

  First, as shown in FIG. 6 (a), in a predetermined measurement period, based on the meter reading result (used flow rate and used time) of the water meter 7, a composite waveform S is obtained as a flow rate waveform (total used flow rate pattern). To do. Moreover, as shown in FIG.6 (b), the usage flow pattern memory | storage part 31 has six types of water supply, a toilet (large), a toilet (small), a bath, a washing machine, a 1st faucet, and a 2nd faucet. Waveforms of the first waveform P1, the second waveform P2, the third waveform P3, the fourth waveform P4, the fifth waveform P5, and the sixth waveform P6 as the flow waveform (usage flow pattern) of the water-using device. Is stored.

  When specifying the tap water use appliance from the composite waveform S, as shown in the procedure ST1 to the procedure ST6 of FIG. 7, the use appliance identification unit 33 selects one of the combinations of the first to sixth waveforms P1 to P6. When the sum of the waveform areas (total fluid usage) and the area of the combined waveform S (total fluid usage during the measurement period) are compared, the combination that minimizes these errors is determined. In the case of the synthesized waveform S, the error from the area of the synthesized waveform S is minimized when the first waveform P1, the third waveform P3, and the fourth waveform P4 are combined. As a result, the toilet (large), the bath, and the washing machine are specified as the tap water use appliances used.

  Next, as shown in steps ST7 to ST13 of FIG. 7, the combined waveform S is subtracted from the head of the specified waveform of the tap water use appliance to obtain the order in which the error from the combined waveform S is minimized. That is, the overlapping portion between the synthesized waveform S and each waveform is subtracted by pattern matching. In the case of the composite waveform S of this example, as shown in FIGS. 8A, 8B, and 8C, overlapping portions in the order of the first waveform P1, the fourth waveform P2, and the third waveform P3. Is subtracted, the error from the combined waveform S is minimized. As a result, it is specified that the tap water use appliances are used in the order of the toilet (large), the washing machine, and the bath, and the usage time period is obtained.

In this way, the used appliance identification unit 33 first obtains a combination of the first to sixth waveforms P1 to P6 that minimizes an error from the total area of each waveform when compared with the area of the combined waveform S. Since this combination does not have to consider the order, the number of combinations is
_{6 C 0 + 6 C 1 +} 6 C 2 + 6 C 3 + 6 C 4 + 6 C 5 + 6 C 6 = 64
There are 64 ways. The number of combinations is 128 in the case of seven types of tap water using instruments and 256 in the case of eight.

  After evaluating the 64 combinations, the tap water use appliances were narrowed down to three types: toilet (large), bath, and washing machine, and then the order of those was rearranged to evaluate the error from the composite waveform. Identify the order (usage hours) of tap water use appliances. At this time, since the tap water use appliances are narrowed down to three types, the use order of the tap water use appliances can be specified by evaluating six combinations.

Here, even if such an area evaluation method is not adopted, if the six types of waveforms are subtracted in order from the top by pattern matching from the beginning, it is possible to simultaneously specify the used tap water appliances and the order of use. . In this case, since it is necessary to consider the order at the same time, the number of combinations of the first to sixth waveforms necessary for the evaluation is
_{6 P 0 + 6 P 1 +} 6 P 2 + 6 P 3 + 6 P 4 + 6 P 5 + 6 P 6 = 1957
As shown in FIG. In addition, there are 13700 ways of using tap water using 7 models, and 109601 if there are 8 types of using tools, and the number of combinations to be evaluated increases exponentially as the number of used tools increases.

  Therefore, as in this example, the used tap water use appliance is specified from the area of the composite waveform S and the waveform area for each tap water use appliance, and then used from the combined waveform S and the specified individual waveform. If the specified order of use of the used tap water appliances is specified, the number of combinations to be evaluated will be smaller than specifying the used appliances and the order of use at the same time from the composite waveform S and the waveform for each tap water appliance. The device can be identified in a short time.

(Water charge calculation function)
Next, a water charge calculation function in the electronic counter 9 of this example will be described. The electronic counter 9 of this example includes a flow rate integrating unit 34. The flow rate integrating unit 34 uses the tap water usage amount for each tap water use device based on the identification result of the tap water use device used. When the unit-specific integration unit 35, the amount of tap water used for each time zone, for example, the amount of use for each time zone 36 that integrates the amount used at night, and the amount of tap water used for each flow rate zone, for example, when a certain flow rate is exceeded The use amount integration unit 37 for each flow rate zone that integrates the excess flow rate is provided.

  In addition, a charge storage unit 40 that stores a tap water usage charge is provided, and the charge storage unit 40 includes a charge storage unit 41 for each use appliance that stores a unit price of a tap water use for each tap water use instrument, A usage fee storage unit 42 for each time zone that stores the unit price of tap water usage fee for each time zone and a usage fee storage unit 43 for each flow rate that stores the unit price of tap water usage fee for each flow rate zone are included.

  In addition, a charge calculation unit 50 is provided. In the charge calculation unit 50, the charge for each appliance and the time based on the integrated value in the integration unit 34 and the unit price of the tap water usage stored in the charge storage unit 40. The charge for each band and the charge for each flow rate band are calculated, and these are added together to calculate the tap water usage fee at each tap water usage place 2.

  When calculating the fee for each appliance used, for example, if the tap water usage fee for the target tap water appliance that is a new product is set at a low price, sales of the appliance can be expected to be promoted. In addition, if the tap water usage fee is reduced at midnight when the amount of tap water used is low, the effect of suppressing fluctuations in the amount of tap water used per day can be expected. Furthermore, if an expensive tap water usage fee is set for the excess flow rate, a water saving effect can be expected, for example, in the case of drought in summer.

  FIG. 9 shows a billing method for a tap water usage fee that can be expected to save water. In the figure, the horizontal axis represents time, and the vertical axis represents the flow velocity. When using a large amount of water, it is possible to use a bath, car wash or watering. Of these, baths are essential compared to others, so tap water usage fees are reduced, and other watering and car washing fees are increased.

  In the figure, when water for car washing is used at flow rate a for time b, water for bath is used at flow rate d for time e, and water spraying is performed at flow rate g for time h, the amount used for car washing c The unit price is set high for (= a × b) and the use amount i (= g × h) for watering, and the unit price is set low for the use amount c (= d × e) for bath. Furthermore, the unit price may be reduced only for the bath water usage fee for once a day. As described above, whether or not the bath is used can be determined by the flow rate and time or the amount used, and can also be determined by the rising and falling patterns of the flow rate. If such a fee structure is used, a water-saving effect can be expected.

  FIG. 10 also shows a billing method of a tap water usage fee that is advantageous for saving water. In the example shown in the figure, the cooling tower fee is increased based on the outside temperature for the purpose of saving water. That is, when the outside air temperature is low, the water bill unit price is set higher, and the unit price is set lower as the outside air temperature becomes higher. In this case, it is necessary to add a temperature sensor.

  In this way, when the outside air temperature is low, if the water usage fee of the cooling tower is set high, the cooler will be used only when the outside air temperature is high, so a water saving effect can be expected.

(Water-saving function during drought)
Next, the electronic counter 9 of this example includes a water leakage determination unit 60, and determines the presence or absence of water leakage based on the appliance being used and the detected usage time and flow rate of tap water. . As for the presence or absence of water leakage, it can be determined that water leakage has occurred when the minimum flow rate of the detected tap water is constant or when the rate of increase is constant. Further, the amount of water leakage can be obtained as a value obtained by subtracting the amount of water used by the device used from the total amount of water used for a certain period based on the result of determination of the device used. Or it can obtain | require as a value which took time to the minimum flow volume judged to be a water leak.

  When the water leakage state is detected, the water leakage determination unit 60 notifies the valve control unit 61 to that effect. Upon receipt of the notification, the valve control unit 61 outputs a control signal to the flow control valve 8 and shuts off the flow control valve 8. At the same time, an emergency notification that water leakage has been detected and the valve has been shut off is sent to the transmission device 12 via the communication unit 70. The transmission device 12 transmits the emergency call to the management center terminal 15 via the Internet 4.

  Moreover, in this example, the used appliance information storage unit 32 includes a plurality of tap water using appliances according to necessity, at least a first group having a high degree of necessity and a second group having a low degree of necessity. It is stored and held in the state classified into. For example, watering devices for turf and the like are classified into the second group because their living needs are low. The valve control unit 61 is configured to set a condition to that effect when the tap water supply source side is in a drought state or the like, or when it is necessary to save water due to water shortage. In a state where such a condition is set, if the identified appliance to be used is an appliance belonging to the second group, the valve control unit 61 sets the flow control valve 8 to a predetermined amount in order to save water. Only throttle and reduce the flow rate. As a result, it is possible to reduce the flow rate used by the watering device or the like, so that the water saving effect can be improved.

(Health management function)
Next, the electronic counter 9 stores a tap water use pattern storage unit 80 that stores and holds a tap water use pattern of a specific tap water use tool used by a person in the tap water use place 2, and the contents of the storage unit. And an abnormality discriminating unit 81 for detecting a human anomaly at the location where the tap water is used based on the actual usage pattern of tap water.

  For example, if the tap water usage pattern of the flush toilet is stored and the use of the flush toilet is not detected once in a day, an abnormality has occurred in a person at the location where the tap water is used As a result, the abnormality determination unit 81 generates an emergency call signal. This emergency call signal is transmitted to the management center terminal 15 via the communication unit 70 and the transmission device 12.

  In this way, the health condition of the elderly can be grasped based on the state of use of the tap water in a place where the tap water is used, for example, an elderly living alone, etc., and it is possible to respond quickly when an abnormality occurs.

(Management center side system)
Next, in the management center side system 5 of the flow meter system 1 of this example, as described above, the Internet server 17 is provided, and a browsing site is operated on the Internet. This browsing site is accessible only to those that have been given access rights in advance. For example, an access right is given to a person who lives in the tap water use place 2 in advance. When a person living in the tap water use place 2 accesses the browsing site and enters a password given in advance, the tap water usage fee, tap water use status, etc. at the tap water use place can be browsed. it can. Therefore, since these can be confirmed from the Internet terminal 19 without being restricted by time and place, it is convenient.

  In this example, the charge and pattern can be set and changed from the input unit 90 attached to the electronic counter 9. That is, it is possible to set, change, and update the contents of the use flow rate pattern storage unit 31, the use pattern storage unit 80, the use appliance information storage unit 32, and the charge storage unit 40. Furthermore, these can be set, changed, and updated from the management center terminal 15 via the Internet.

[Second Embodiment]
With reference to FIG. 11, FIG. 12, FIG. 13, the example which improved the identification function of the water use appliance is demonstrated.

  FIG. 11 is a cross-sectional view of the flow rate detector of the water meter used in this example. FIG. 12 is a functional block diagram of a water meter and an electronic counter in the tap water usage side system of this example. FIGS. 13A and 13B are explanatory diagrams for explaining the principle for identifying with high accuracy that a flush toilet has been used as a tap water use instrument in this example. This example has the same basic configuration as the first embodiment, and only the configuration related to the identification function of the tap water use appliance is different. Therefore, the parts having the same function are denoted by the same reference numerals. Therefore, the description thereof will be omitted.

  An electronic water meter 7 shown in FIG. 11 includes a meter case 72, an electronic unit 73 attached to the meter case 72, and a fixing annular member 74 that fixes the electronic unit 73 to the meter case 2.

  The meter case 72 is provided with a flow measurement channel 721 having a substantially circular cross section, and the flow measurement impeller 722 is rotatable about a rotation shaft 723 orthogonal to the flow direction. Has been placed. The impeller 722 rotates according to the amount of water flowing from the inlet 724 to the outlet 725 of the water passage 721. From the portion of the meter case 72 where the impeller 722 is disposed, an electronic unit housing cylindrical portion 726 extends in a direction orthogonal to the flowing water direction.

  The electronic unit 73 includes a cylindrical unit case 731 including a case body 75 and a case lid 76, an electronic circuit unit 732 incorporated therein, a liquid crystal display 735, and the like. The electronic circuit unit 732 includes a magnetic sensor 733. The magnetic sensor 733 is disposed on the bottom surface of the unit case 731 and is built in the tip of the impeller 722 via the bottom plate portion 751 of the unit case 731. It faces the pair of permanent magnets 734, 734. The permanent magnets 734 and 734 rotate with the impeller 722 to generate a rotating magnetic field, and this rotating magnetic field is detected by the magnetic sensor 733.

  Further, in this example, the water pressure detection comprising a pressure sensor in a flat portion formed on the side of the portion protruding at the center of the disc-shaped bottom plate portion 751 whose center portion protrudes upward in the case body 75. A device 55 (water pressure detecting means) is attached, and the water pressure detector 55 detects the water pressure of the tap water flowing into the water meter 1. As the water pressure detector 55, a strain sensor indicated by a dotted line 55 'may be used.

  In the tap water usage-side system using the water meter 7 configured as described above, the water pressure change detected by the water pressure detector 55 is converted into a digital signal by the A / D converter 27 as shown in FIG. Then, the data is output from the data output circuit 26 to the electronic counter 9.

  In the electronic counter 9, as described in the first embodiment, the use flow rate pattern storage unit 31 and the use appliance information storage that stores information on the use appliances A, B, and C installed in the tap water use place 2 The part 32, the use appliance identification part 33, etc. are comprised. In this example, the electronic counter 9 includes a water pressure pattern storage unit 30 that stores the detection result of the water pressure detector 55 as a water pressure pattern.

  The other configuration of the electronic counter 9 and the basic operation of the electronic counter 9 are the same as those described in the first embodiment, so that the description thereof is omitted here. When the toilet is used, the usage flow pattern shown in FIG. 13A is obtained every time, and based on this usage flow pattern, the tap water use device actually used can be identified. However, when the water pressure is reduced at the time when the use flow rate is detected, the use flow pattern has a time axis as shown in FIG. 13B compared to the use flow pattern shown in FIG. The pattern is extended and the flow level is lowered, and it becomes impossible to accurately identify which instrument has been used.

  However, in this example, the water pressure detector 55 is disposed on the water meter 7, while the electronic counter 9 stores a temporal change in the water pressure level detected by the water pressure detector 55 as a water pressure pattern. Since the hydraulic pressure pattern storage unit 30 is configured, the used appliance identification unit 33 stores the used appliance in the hydraulic pressure pattern storage unit 30 when identifying the used appliance based on the used flow rate pattern stored in the used flow rate pattern storage unit 31. In consideration of the water pressure pattern, a correction corresponding to the level of the water pressure level is applied to the use flow rate pattern to identify the appliance to be used.

  For example, in the usage flow rate pattern, for example, considering the water pressure in the flow rate rising period T1, the flow rate period T2 in which the flow rate is substantially constant, and the flow rate falling period T3, correction corresponding to the level is applied to the usage flow rate pattern. Identify the appliance to be used. More specifically, if the water pressure is low when the flush toilet is used, a flow rate pattern as shown in FIG. 13B can be obtained. In this case, the flow rate rising period T1, the flow rate is substantially constant. In each of the following period T2 and the falling period T3 of the flow rate, the time axis is compressed and the correction for raising the flow rate level is performed, and the flow pattern used in FIG. 13B is shown in FIG. It correct | amends to the usage flow pattern shown, and identifies the tool currently actually used based on this usage flow pattern after correction | amendment. Therefore, the used appliance identifying unit 33 can accurately identify the used appliance that is actually used even when there is a change in water pressure.

(Other embodiments)
In the example described above, the electronic counter 9 is provided with an identification unit for equipment used, a storage unit for charges, and the like. However, these parts can also be arranged on the electronic water meter 7 side. It can also be built in the transmission device 12.

  The present invention is also applicable to fluid usage locations that consume various gaseous fuels or liquid fuels as fluids other than water and gas, based on the fluid usage time and flow rate detected by the flow meter. It can also be used for detection and construction of various billing systems.

1 is a schematic system configuration diagram of a flow meter system according to a first embodiment to which the present invention is applied. It is a schematic functional block diagram of the water meter and electronic counter in FIG. It is a graph which shows the example of a flow pattern at the time of faucet use. It is a graph which shows the example of the flow pattern at the time of flush toilet use. It is a graph which shows the example of a flow pattern at the time of bath use. (A) And (b) is a graph which shows the example of the flow waveform obtained from a water meter, and the example of the flow waveform of each appliance currently hold | maintained at the use flow pattern memory | storage part. It is a flowchart which shows the specific procedure of a tap water use instrument. (A), (b) and (c) is a graph which shows the waveform which subtracted one by one the flow rate waveform of the tap water use appliance specified from the flow rate waveform shown to Fig.6 (a). It is a graph for demonstrating the example of a water rate setting according to an appliance used. It is a graph which shows another example of water rate setting. It is sectional drawing which shows the structural example of the water meter used for the flow meter system which concerns on 2nd Example to which this invention is applied. It is a schematic functional block diagram of the water meter and electronic counter in FIG. It is a graph explaining that the flow rate pattern at the time of use of a flush toilet changes with changes in water pressure.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Flow meter system 2 Tap water use place 3 Tap water use side system 4 Internet 5 Management center side system 6 Water pipe 7 Electronic water meter 8 Flow control valve 9 Electronic counter 10, 11 Communication line 12 Transmission device 15 Management center terminal 16 Database 17 Internet server 19 Internet terminal 30 Water pressure pattern storage unit 31 Use flow pattern storage unit 32 Use appliance information storage unit 33 Use appliance identification unit 34 Integration unit 35 Use appliance specific integration unit 36 Time zone integration unit 37 Flow rate integration unit 40 Charge storage unit 41 Charge storage unit for each appliance 42 Charge storage unit for each time zone 43 Charge storage unit for each flow zone 50 Charge calculation unit 55 Water pressure detector 60 Water leakage determination unit 61 Valve control unit 70 Communication unit 80 Usage pattern of specific appliance Storage unit 90 Input unit 100 Display unit

Claims (46)

Supply fluid such as tap water and gas to multiple fluid use equipment installed in the fluid use place through the fluid pipe with the flow meter attached,
Based on the result of meter reading by the flow meter, a use flow pattern representing a time change of a typical use flow rate when each fluid use device is used at the fluid use place is determined and stored for each flow use device,
Based on the result of meter reading by the flow meter in a predetermined measurement period, a total fluid usage amount in the measurement period and a total usage flow pattern representing a temporal change in the total fluid usage flow are obtained,
Based on the flow rate pattern of each fluid use device, a combination of the fluid use devices that can obtain a total fluid use amount that matches or is closest to the total fluid use amount is obtained, and each fluid included in the obtained combination is obtained. Estimating that the device used is a fluid device used during the measurement period,
Fluid usage status detection for estimating the usage sequence or usage time period of each fluid use device in the measurement period based on the use flow pattern and the total use flow pattern of each fluid use device included in the obtained combination Method. In claim 1,
A fluid usage state detection method for determining the presence or absence of fluid leakage based on the usage flow rate pattern of the fluid usage device estimated to have been used during the measurement period and the total usage flow rate pattern. In claim 2,
A fluid usage state detection method for closing the fluid pipe when it is determined that fluid leakage has occurred. In claim 1,
The fluid use device is classified into at least a first group having a high degree of necessity and a second group having a low degree of necessity according to the necessity at the place where the fluid is used.
When the identified fluid use apparatus belongs to the second group, a fluid use state detection method for reducing a flow rate supplied through the fluid pipe under a certain condition. In claim 4,
The fluid usage state detection method, wherein the certain condition includes a fluid shortage state on a fluid supply side. In claim 1,
Based on the estimation result as to whether or not the fluid using instrument is used, a fluid flow rate is calculated for each fluid using instrument for a predetermined period, and the fluid usage fee for the fluid using instrument is calculated based on the integrated value. Usage detection method. In claim 1,
A fluid usage status detection method for determining whether or not an abnormality has occurred in a human at the fluid usage location based on the usage flow rate pattern obtained by the specific fluid usage instrument used by a human and the total usage flow rate pattern . In claim 7,
The fluid usage status detection method, wherein the specific fluid use appliance includes a bath. In claim 1,
A fluid use state detection method for determining that an abnormality has occurred in a person at the fluid use place when a specific fluid use instrument used by a person is identified as being unused for a predetermined period or more. In any one of Claim 1 thru | or 9,
When determining the flow rate pattern used, a fluid pressure pattern representing a temporal change in the fluid pressure level of the fluid is detected, and in consideration of the fluid pressure pattern, a combination of fluid use tools used during the measurement period Fluid usage status detection method for estimating A flow meter attached to a fluid pipe that supplies fluid to a place where fluid such as tap water or gas is used;
A use instrument information storage unit that stores and holds a plurality of fluid use instrument information installed in the fluid use place;
Based on the result of meter reading by the flow meter, a used flow pattern representing a time change of a typical used flow rate when each fluid using instrument is used at the fluid use place is stored and retained for each flow using instrument. A pattern storage unit;
A use instrument estimation unit that estimates a fluid use instrument actually used from the plurality of fluid use instruments installed in the fluid use place;
The instrument used estimation unit is
Based on the result of meter reading by the flow meter in a predetermined measurement period, a total fluid usage amount in the measurement period and a total usage flow pattern representing a temporal change in the total fluid usage flow are obtained,
Based on the flow rate pattern of each fluid use device, obtain a combination of the fluid use devices that can provide a total fluid use amount that matches or is closest to the total fluid use amount,
Estimating that each fluid use device included in the obtained combination is a fluid use device used during the measurement period,
Fluid usage status detection for estimating the usage sequence or usage time period of each fluid use device in the measurement period based on the use flow pattern and the total use flow pattern of each fluid use device included in the obtained combination system. In claim 11,
Fluid use having a leakage determination unit that determines whether or not there is a fluid leakage based on the use flow pattern of the fluid use device estimated to have been used during the measurement period and the total use flow pattern A situation detection system. In claim 12,
Use of fluid having a control valve capable of opening and closing the fluid pipe and a valve control section for driving the control valve to close the fluid pipe when it is determined that fluid leakage has occurred A situation detection system. In claim 11,
A flow rate control valve for controlling the flow rate of the fluid pipe, and a valve control unit for driving and controlling the flow rate control valve;
In the use instrument information storage unit, a plurality of the fluid use instruments are classified into at least a first group having a high degree of necessity and a second group having a low degree of necessity according to necessity. Remembered,
When the fluid use instrument estimated to be in use belongs to the second group, the valve control unit drives the flow control valve under a certain condition, and the fluid A fluid usage detection system that reduces the flow rate supplied through a pipe. In claim 14,
The fluid use state detection system, wherein the certain condition includes a fluid supply shortage state on the fluid supply side. In claim 11,
Based on the estimation result of whether or not the fluid use instrument is being used, an integration unit for each use instrument that determines an integrated value of the fluid flow rate of each fluid use instrument in a predetermined period;
A charge storage unit that stores the unit price of each fluid use device;
A fluid usage status detection system comprising: a charge calculation unit that calculates a fluid use fee for each fluid use device based on the integrated value by the use device-specific integration unit and the contents stored in the charge storage unit. In claim 11,
A fluid use pattern storage unit that stores and holds the fluid use pattern obtained by the specific fluid use instrument used by humans;
A fluid usage status detection system comprising: an abnormality determining unit that determines whether or not an abnormality has occurred in a person at the fluid usage location based on the fluid usage pattern and the total usage flow rate pattern. In claim 17,
A fluid usage status detection system in which the specific fluid use appliance includes a bath. In claim 11,
Based on the detection results of the use instrument estimation unit and the flow meter, if a specific fluid use instrument used by a person at the fluid use place has not been used for a predetermined period or more, the person at the fluid use place has an abnormality. A fluid use state detection system having an abnormality determination unit that determines that a problem has occurred. In any one of claims 11 to 19,
Fluid pressure detecting means for detecting the fluid pressure level of the fluid in the flow meter when each fluid using instrument is used;
A fluid pressure pattern storage unit that stores a fluid pressure pattern obtained by the fluid pressure detection means;
The fluid usage state detection system in which the use instrument estimation unit obtains a combination of fluid use instruments used during the measurement period in consideration of the fluid pressure pattern. In any one of claims 11 to 20,
An electronic counter that displays at least one of the estimation result of the use appliance estimation unit, the determination result of the leakage determination unit, the calculation result of the charge calculation unit, the determination result of the abnormality determination unit, and the calculation result of the integration unit A fluid usage status detection system. In any one of claims 11 to 20,
A management center terminal;
At least one of an estimation result in the use appliance estimation unit, a discrimination result of the leak discrimination unit, a calculation result of the charge calculation unit, a discrimination result of the abnormality discrimination unit, and a calculation result of the integration unit is used as a communication line. A fluid usage status detection system comprising: a transmission unit that transmits to the management center terminal via In any one of claims 11 to 20,
A management center terminal;
An electronic counter that displays at least one of the estimation result of the use appliance estimation unit, the determination result of the leakage determination unit, the calculation result of the charge calculation unit, the determination result of the abnormality determination unit, and the calculation result of the integration unit When,
At least one of an estimation result in the use appliance estimation unit, a discrimination result of the leak discrimination unit, a calculation result of the charge calculation unit, a discrimination result of the abnormality discrimination unit, and a calculation result of the integration unit is used as a communication line. A fluid usage status detection system comprising: the electronic counter via a transmitter; and a transmitter that transmits the electronic counter to the management center terminal via the electronic counter. In claim 23,
The electronic counter includes a fluid usage state detection system including the estimation unit, the determination unit, and the storage unit. In claim 23 or 24,
A fluid usage status detection system in which the management center terminal is supplied with estimation results and discrimination results at the respective units via the Internet. In claim 25,
A fluid usage status detection system having an Internet server that operates a browsing site where the estimation results and the discrimination results in the respective units can be browsed via the Internet. In claim 23 or 24,
A fluid usage status detection system capable of changing the charge and pattern settings from an Internet connection terminal via the Internet. In claim 23 or 24,
A fluid usage status detection system in which the charge and pattern settings can be changed from the electronic counter and / or the management center terminal. In a gas meter system that includes a flow meter attached to a gas pipe for supplying gas to a gas use place, and calculates the use time and flow rate of the gas at the gas use place by the flow meter,
A use flow pattern storage unit that stores and holds a use flow pattern of gas at the gas use place;
A use appliance information storage unit in which a plurality of gas use appliance information installed in the gas use place is stored and retained,
Based on the usage time and usage flow detected by the flow meter, the usage flow pattern, and the usage equipment information, the actual usage is performed from among a plurality of gas usage equipment installed at the gas usage location. A used appliance identifying unit for inferring the gas using appliance
The use appliance identifying unit is actually used from a plurality of gas use appliances installed at the gas use location based on the area of the combined waveform obtained from the use time and the use flow detected by the flow meter. Identify gas appliances that are used,
A gas meter system characterized by specifying a use order of gas use equipment based on a flow rate waveform of the specified gas use equipment and the combined waveform. In claim 29,
A gas meter system, comprising: a leakage determination unit configured to determine the presence or absence of gas leakage based on the identified gas use appliance, the detected use time and flow rate of the gas. In claim 30,
A control valve capable of opening and closing the gas pipe, and a valve control unit that drives the control valve to close the gas pipe when it is determined that gas leakage has occurred. A characteristic gas meter system. In claim 29,
A flow rate control valve that controls the flow rate of the gas pipe, and a valve control unit that drives and controls the flow rate control valve;
In the use appliance information storage unit, a plurality of gas use appliances are stored in a state of being classified into at least a first group having a high degree of necessity and a second group having a low degree of necessity according to necessity. Is retained,
When the inferred gas using instrument belongs to the second group, the valve control unit drives the flow rate control valve under a certain condition, and passes through the gas pipe. A gas meter system characterized by reducing a supplied flow rate. In claim 32,
The gas meter system according to claim 1, wherein the certain condition includes an insufficient gas supply state on the gas supply side. In claim 29,
Based on the identification result of the gas appliances used, an appliance-specific integration unit that integrates the gas usage for each gas appliance, a charge storage unit that stores the unit price of each gas usage appliance, and the appliance-specific integration A gas meter system comprising: a charge calculation unit that calculates a gas use fee for each gas use appliance based on the integrated value by the unit and the contents stored in the charge storage unit. In claim 29,
A gas use pattern storage unit that stores and holds a gas use pattern of a specific gas use instrument used by a person in the gas use place;
And an abnormality determining unit that determines whether or not an abnormality has occurred in a person using the gas based on the gas usage pattern and the gas usage time and flow rate detected by the flow meter. A gas meter system characterized by that. In claim 35,
The gas meter system according to claim 1, wherein the specific gas use appliance includes a bath. In claim 29,
Based on the detection results of the use appliance identification unit and the flow meter, if a specific gas use appliance used by a person at the gas use place has not been used for a predetermined period or longer, the person at the gas use place has an abnormality. A gas meter system comprising an abnormality determination unit that determines that a problem has occurred. In any one of claims 29 to 37,
Gas pressure detecting means for detecting the gas pressure level of the gas in the flow meter;
A gas pressure pattern storage unit for storing the gas pressure pattern obtained by the gas pressure detection means,
The use appliance identifying unit is configured to use a plurality of gases installed at the gas use location based on a use time and a use flow detected by the flow meter, the use flow pattern, the use appliance information, and the gas pressure pattern. A gas meter system characterized by inferring a gas-using instrument actually used from the instruments used. In any one of claims 29 to 38,
A gas meter system, comprising: an electronic counter that displays a result of the identification in the appliance identifying unit, a result of the leakage determination unit, a charge calculation unit, an abnormality determination unit, and an integration unit. In any one of claims 29 to 38,
A management center terminal, and a transmission unit that transmits a result of the inference by the used appliance identification unit, a result of the leakage determination unit, a charge calculation unit, an abnormality determination unit, and an integration unit to the management center terminal via a communication line. A gas meter system comprising: In any one of claims 29 to 38,
Management center terminal, identification result in the used appliance identification unit, electronic counter that displays the results in the leakage determination unit, charge calculation unit, abnormality determination unit and integration unit, identification result in the used appliance identification unit, A transmission unit that transmits the results of the leakage determination unit, the charge calculation unit, the abnormality determination unit, and the integration unit to the electronic counter via a communication line. An identification result, a detection result, and a discrimination result are transmitted to the management center terminal via a communication line. In claim 41,
The electronic counter includes the identification unit, the determination unit, and a storage unit. In claim 40 or 41,
The gas meter system according to claim 1, wherein the management center terminal is supplied with an identification result and a discrimination result at each unit via the Internet. In claim 43,
A gas meter system comprising an Internet server that operates a browsing site capable of browsing the identification results in the respective sections and the discrimination results via the Internet. In claim 40 or 41,
A gas meter system, wherein the charge and pattern settings can be changed from an Internet connection terminal via the Internet. In claim 40 or 41,
A gas meter system, wherein the charge and pattern settings can be changed from the electronic counter or the management center terminal.

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