JP4439195B2 - Utility consumer equipment operation recognition device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a utility consumer device that consumes a utility, and a utility consumer device operation recognition device that recognizes the operating state of the utility consumer device.
In addition, in this invention, a utility shows the gas, electricity, water supply, etc. which are consumed in consumers, such as a house and a business office, and these utilities are a gas company, an electric power company, a water service company, etc. The utility company constantly supplies the consumer, and the supply amount is measured by a meter device such as a gas meter, an electric meter, and a water meter provided in the consumer.
[0002]
[Prior art]
As a gas meter provided in each home, etc., there is a microcomputer meter with a built-in microcomputer (hereinafter referred to as a microcomputer), and the microcomputer executes a predetermined program to cause gas leakage, gas hose disconnection, and gas pipe. It functions as a supply abnormality detection function that detects gas supply abnormalities such as breakage, gas valve misopening, etc., and when a supply abnormality is detected, a shut-off valve that shuts off the gas supply is activated or an alarm is issued Has been.
[0003]
The supply detection function of the microcomputer meter recognizes the gas flow status such as the total measured gas supply amount and its fluctuation amount, and the gas flow status did not become the predetermined reset state during the predetermined judgment period. For example, as the supply abnormality detection function, a safety duration abnormality detection function for detecting that the gas consuming device is operated beyond a predetermined safety duration. In addition, there is a leak detection function for detecting so-called gas leak in which gas leaks from an inner pipe connected to the downstream side of the microcomputer meter.
[0004]
The safety duration abnormality detection function detects this as a safety duration abnormality when the total supply amount measured by the gas meter does not change during a predetermined determination period such as 12 hours. When gas is detected, the gas supply is cut off.
On the other hand, when the total supply amount measured by the gas meter is not less than or equal to 0 or a value close to zero during the predetermined leakage determination period such as 30 days, the leakage detection function This is detected as the gas leak, and an alarm or the like is issued when the gas leak is detected.
[0005]
However, for example, when a device that is continuously operated over a long period of time such as a fuel cell system is provided as a gas consuming device, the microcomputer meter is continuously operated by normal operation of the gas consuming device. Gas consumption may be erroneously detected as an abnormality in gas supply such as an abnormality in the safety duration time or a gas leakage.
[0006]
Therefore, as a method for identifying the operation of such a gas consuming device that is continuously operated and avoiding erroneous detection of gas supply abnormality, the gas consuming device is used for a certain period of time during ignition and extinguishing. The gas meter is configured to execute a fluctuation operation that varies according to a unique fluctuation pattern that can be distinguished from other gas consuming devices, and on the gas meter side, the fluctuation pattern of the total supply amount of gas measured by the gas meter, and the gas There is one that recognizes ignition or extinguishment of gas consuming equipment by comparing with the variation pattern of the specific gas consumption stored in advance as knowledge for recognizing ignition and extinguishing of consuming equipment (for example, patents) Reference 1).
[0007]
[Patent Document 1]
JP 2000-283815 A
[Problems to be solved by the invention]
However, in the technique described in Patent Document 1, although normal ignition and extinguishing of the gas consuming device can be recognized, for example, the gas consuming device abnormally stops without being able to execute the gas consumption fluctuation operation. If the gas consumption device is not able to execute the fluctuation operation of the gas consumption at the time of ignition, the ignition and extinguishing of the gas consumption device may not be accurately recognized. . Furthermore, even for a gas consuming device that has been able to recognize ignition, it may not be possible to recognize the operating state of whether or not the gas consuming device is operating normally.
[0009]
Therefore, the present invention has been made in view of the above circumstances, and the purpose of the present invention is to accurately recognize the operating state of utility consuming equipment and to avoid erroneous detection of utility supply abnormality. It is in the point to realize.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, the first characteristic configuration of the utility consumer equipment operation recognition device according to the present invention executes a consumption fluctuation operation for changing the utility consumption according to a predetermined individual fluctuation pattern in a predetermined individual fluctuation cycle. comprising a variation operation means, in a utility consuming devices that consume utilities, the individual variation period and the individual variation pattern of the consumption part including the utility consuming devices that are set to those distinguishable with other utilities consumers utility The operation state recognition means for recognizing the operation state of the utility consumer device from the total fluctuation pattern of the total supply amount, and the individual variation pattern set in the utility consumer device for identifying the utility consumer device Storage means for storing as knowledge The operating state recognition unit compares the total variation pattern of the total supply amount of the utility with the individual variation pattern stored in the storage unit, and is configured to be able to identify the utility consumer device A consumer equipment operation recognition device comprising supply abnormality detection means for detecting utility supply abnormality according to the operation state of the utility consumer equipment recognized by the operation state recognition means, wherein the supply abnormality detection means comprises a utility supply amount. Is detected as a safety continuation time abnormality detection that does not change during the predetermined determination period, or a leakage that detects that the amount of supply during the predetermined determination period did not fall below the supply amount of no-flow state as a utility leakage In the configuration for performing detection, the individual variation period is set shorter than the determination period. The supply abnormality detection means, by using the supply amount obtained by subtracting the utility consumption of each utility consumers during operation from the utility total supply lies in you detect the utility supply abnormality.
[0011]
Utility consumer devices that consume utilities used in systems that use this utility consumer operation recognition device
Fluctuation operation means is provided for executing a consumption fluctuation operation for changing the consumption of the utility in a predetermined individual fluctuation cycle according to a predetermined individual fluctuation pattern. In the present application, “individual” indicates that set for the utility consumer device. That is, according to this utility consuming device, for example, when operating normally, the utility such as gas, electricity or water is consumed by executing the consumption changing operation by the changing operation means. The total supply amount of the utility measured by a meter device such as a microcomputer meter provided on the upstream side of the utility consumer device can be varied along the constant individual fluctuation period and along the constant individual fluctuation pattern, The utility consumption device operation recognition device that monitors the total fluctuation pattern of the total supply amount measured by the meter device can transmit and recognize the operation status such as whether or not the utility consumption device is operating normally. it can.
[0012]
The utility consumers, the individual variation period and the individual variation pattern is set to something distinguishable from other utilities consumers.
[0013]
Therefore, according to this utility consuming device, when a plurality of utility consuming devices having the above-described fluctuation operation means are connected to one meter device, the individual fluctuation period set in each utility consuming device and By making the above individual variation pattern distinguishable from other utility consumer devices, the individual variation pattern of each utility consumer device is individually included in the total variation pattern of the total utility supply measured by the meter device. Thus, the utility consumer device can be accurately identified by the utility consumer device operation recognition device or the like.
[0014]
Then, the utility consuming devices operating recognition device, from the total variation pattern of the total supply amount of utility to consumers portion including utility consumers, obtain Preparations recognizing driving condition recognizing means an operating state of the utility consumers.
[0015]
Therefore, according to the utility consuming devices operating recognizer this, by providing the operating state recognition means, the microcomputer meter or the like provided on the upstream side of the consumer unit including a utility consuming device having the above variation operation means meter Monitors the total fluctuation pattern of the total utility supply measured by the equipment, and the utility consumption equipment is normal depending on whether or not the individual fluctuation pattern by the fluctuation operation means of the utility consumption equipment appears in the total fluctuation pattern. It is possible to recognize the driving state of whether or not the user is driving.
[0016]
Furthermore, the storage device stores the individual variation pattern set in the utility consumer device as knowledge for identifying the utility consumer device, and
The operating state recognition means, the total variation pattern of the total supply amount of the utility, by comparing the individual variation pattern which is stored in the storage means, and is identifiably constituting said utility consumers.
[0017]
Therefore, a plurality of utility consumer devices having the above-described fluctuation operation means are connected to one meter device, and the individual variation period and the individual variation pattern set in each utility consumer device are different from those of other utility consumer devices. In the case where it is identifiable, by providing the storage means, the operating state recognition means allows the individual fluctuation pattern of each utility consumer device to be individually expressed in the total fluctuation pattern of the total supply amount of the utility. Each utility consuming device that recognizes the operating state can be identified from other utility consuming devices by comparison with the individual variation pattern stored in advance.
[0018]
Furthermore, the utility consuming devices operating recognition apparatus according to the present invention, obtain Preparations supply abnormality detecting means for detecting the utility supply abnormality in accordance with the operating state of the utility consuming device recognized in the operating state recognition means.
[0019]
As a result, according to this utility consumer equipment operation recognition device, by providing the supply abnormality detection means, it is recognized that the utility consumer equipment that is provided with the fluctuation operation means and is continuously operated for a long time is in operation. If the utility consumer device detects abnormal operation of the utility consumer device as a utility supply abnormality, and if it recognizes that the utility consumer device has all stopped, it detects safety duration abnormality in other consumer units, utility leakage, etc. The utility supply abnormality can be detected by a known supply abnormality detection method. Accordingly, it is possible to avoid erroneous detection of utility supply abnormality due to continuous operation of the utility consumer device, and accurately detect utility supply abnormality.
And the supply abnormality detection means detects the safety duration abnormality that detects that the utility supply amount does not change during the predetermined determination period as a safety duration abnormality, or the supply amount not more than the non-circulation state supply amount during the predetermined determination period. Since it is configured to execute leak detection that detects that it has not been detected as a utility leak, it is possible to detect a safety duration abnormality or leak detection.
Here, the individual fluctuation period of the consumption fluctuation operation by the fluctuation operation means is set shorter than the determination period of the supply abnormality detection by the supply abnormality detection means, so that each device is properly identified. In this state, supply abnormality detection can be executed.
Further, the supply abnormality detecting means detects the utility supply abnormality by using the supply amount obtained by subtracting the utility consumption amount of each utility consuming device being operated from the total utility supply amount, so that the utility consuming device being operated is detected. Supply abnormality can be detected based on the supply amount other than.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings.
[0021]
As shown in FIG. 1, gas (an example of a utility) supplied by a gas supply company to a demand department such as a home or a store via a conduit 1 first passes through a gas meter 10 installed in the demand department. After that, through the inner pipe 2 disposed in the demand section, gas consuming equipment (an example of utility consuming equipment) such as a fuel cell system, a gas engine cogeneration system, and a gas fan heater installed in the demand section (hereinafter referred to as “utility consumption equipment”) 20 and 30 and other gas consumption units (hereinafter abbreviated as “consumption unit”) 40.
[0022]
The gas meter 10 includes a measuring unit 12 that measures the total supply amount of gas flowing from the conduit 1 to the inner pipe 2, and a microcomputer (hereinafter simply referred to as “microcomputer”) 15 that can perform various processes. A shutoff valve 13 capable of shutting off the gas flow to the inner pipe 2 and an alarm lamp 19 that can be turned on by an output signal of the microcomputer 15 are provided, and the total supply amount measured by the measuring unit 12 is integrated. The flow rate is displayed on a display unit (not shown) provided in the gas meter 10.
[0023]
Further, the microcomputer 15 provided in the gas meter 10 executes a predetermined program to thereby detect a supply abnormality detection means 16 for detecting a gas supply abnormality such as gas leakage, gas hose disconnection, gas pipe breakage, and gas plug misopening. Function as.
The supply abnormality detection means 16 monitors the gas flow state recognized from the total supply amount measured by the measuring unit 12, and the gas flow state did not become a predetermined reset state during a predetermined determination period. Is detected as the gas supply abnormality. When the gas supply abnormality is detected, the supply abnormality detection means 16 can recognize that the gas supply abnormality has occurred by operating the shut-off valve 13 to shut off the gas flow, turn on the alarm lamp 18, or the like. An alarm signal can be transmitted to the management server side operated and managed by the gas supplier via a communication network or the like.
[0024]
Specifically, the supply abnormality detection means 16 of the microcomputer 15 detects that the total supply amount measured by the measuring unit 12 does not change during a predetermined determination period such as 12 hours as a safety duration abnormality. It is detected as a gas leak that the total supply amount measured by the detection unit 12 is not less than or equal to 0 or a non-flow state supply amount having a value close to 0 during a predetermined determination period such as 30 days. Supply abnormality detection such as leakage detection can be executed.
[0025]
The devices 20 and 30 are supplied with gas from the gas meter 10 that measures the total supply amount via the inner pipe 2, and the supplied gas is supplied to the consumption units 26 and 36 with consumption adjustment by the control valves 24 and 34. Power consumption, hot water supply, heating, and the like.
[0026]
In addition, the devices 20 and 30 are provided with operation control devices 21 and 31 including computers for operating the control valves 24 and 34 to perform operation control of the consumption units 26 and 36, respectively. Reference numeral 31 functions as fluctuating operation means 22 and 32 for executing a consumption fluctuating operation described later by executing a predetermined program, and the detailed configuration thereof will be described below.
[0027]
As described so far, the devices 20 and 30 are installed so that gas is supplied via the gas meter 10 having the supply abnormality detection means 16, and the devices 20 and 30 are for a long time like a fuel cell system, for example. When the operation is continuously performed at a constant output over a period of time, the supply abnormality detection means 16 of the gas meter 10 erroneously detects the continuous gas consumption in the devices 20 and 30 as a gas supply abnormality. There is.
Specifically, when the gas consumption of the devices 20 and 30 is constant over a long period (for example, 12 hours), the supply abnormality detection means 16 erroneously detects the above-described abnormality in the safety duration and supplies gas. Further, when the devices 20 and 30 continuously consume gas over a long period (for example, 30 hours), the above-described gas leakage is erroneously detected and an alarm is issued.
[0028]
Therefore, as shown in FIGS. 2 (a) and 2 (b), the fluctuating operation means 22 and 32 configured in the operation control devices 21 and 31 are consuming gas in the devices 20 and 30 (that is, during operation). ), By the control valves 24 and 34 according to the individual variation period that is shorter than the determination period of the supply abnormality detection means 16 of the gas meter 10 and different from other devices, and according to the individual variation pattern different from other devices, A consumption changing operation for changing the gas consumption is executed.
[0029]
On the other hand, as shown in FIG. 2 (d), the microcomputer 15 is measured by the variation pattern of the total supply amount of gas to the consumption units 20, 30, 40 including the devices 20, 30, that is, measured by the measurement unit 12. Depending on whether or not the individual fluctuation patterns by the fluctuation operation means 22 and 32 of the devices 20 and 30 are expressed in the total fluctuation pattern of the total supply amount of gas, the operation state of the devices 20 and 30, i.e., normal operation. It functions as a utility consumer equipment driving recognition device provided with driving state recognition means 17 for recognizing whether or not the vehicle is operating.
[0030]
Further, each of the individual variation period and the individual variation pattern in each of the devices 20 and 30 is set to be identifiable from the other, and further, a storage means constituted by a memory or the like provided in the microcomputer 15 In FIG. 18, the individual variation patterns set in the respective devices 20 and 30 are stored as knowledge for identifying the respective devices 20 and 30.
[0031]
Then, the operating state recognition means 17 configured in the microcomputer 15 recognizes the operating state of the devices 20 and 30 from the total fluctuation pattern of the total supply amount of gas measured by the measuring unit 12, Compared with the individual variation patterns of the respective devices 20 and 30 stored in the storage means 18 in advance, the device that recognizes the operation state can be distinguished from the others.
[0032]
Furthermore, the supply abnormality detection means 16 configured in the microcomputer 15 monitors the total fluctuation pattern of the total supply amount by the operation state recognition means 17 and may be operated continuously over a long period of time. Only when it is recognized that all of 20 and 30 are stopped, supply abnormality detection such as the above-described safety duration abnormality detection and leakage detection is performed, and when any of the devices 20 and 30 is in operation, Only the operation status of the devices 20 and 30 is monitored without detecting the supply abnormality.
[0033]
Further, the individual fluctuation pattern set in each of the devices 20 and 30 is recognized, for example, by changing the fluctuation width according to the gas consumption of the devices 20 and 30. By making it possible, the operating state recognition means 17 can also recognize the gas consumption of each of the operating devices 20 and 30 as the operating state.
Further, when the operating state recognition means 17 can recognize the gas consumption of each device 20, 30 as described above, the supply abnormality detection means 16 indicates that one of the devices 20, 30 is in operation. However, using the supply amount obtained by subtracting the gas consumption of each of the operating devices 20 and 30 from the total supply amount of gas measured by the measurement unit 12, supply abnormality such as the above-described safety duration abnormality detection and leakage detection Detection can be performed.
[0034]
That is, the fluctuating operation means 22 and 32 operate the control valves 24 and 34 during the leak determination period to supply gas supply amounts supplied from the inner pipe 2 to the reforming unit 25 and the heating unit 26 of the device 20. For example, by performing a leakage error detection avoidance operation that temporarily changes the flow rate to a non-flowing state flow rate used in the leakage detection of 1.0 L / h, for example, an error of gas leakage caused by continuous operation of the device 20 Avoid detection.
[0035]
Hereinafter, the Example using the microcomputer 15 comprised as the gas consumption apparatus 20 and 30 demonstrated so far and utility consumption apparatus operation | movement recognition apparatus is described based on FIG.
[0036]
2A is a diagram showing a change state of the gas consumption amount of the device 20, FIG. 2B is a diagram showing a change state of the gas consumption amount of the device 30, and FIG. The figure which shows the change state of the gas consumption of the consumption parts 40 other than 20 and 30, FIG.2 (d) is a figure which shows the change state of the total supply amount of the gas measured with the gas meter 10. FIG.
[0037]
As shown in FIGS. 2 (a) and 2 (b), the gas consumption during operation of each device 20 and 30 is the same with an individual variation period different from that of other devices by the above-described variation operation means 22 and 32. It fluctuates according to an individual variation pattern different from other devices.
[0038]
Then, as shown in FIG. 2D, the total supply amount measured by the gas meter 10 is the gas consumption amount of the device 20 (FIG. 2A) and the gas consumption amount of the device 30 (FIG. 2B). ) And the gas consumption amount of the consumption unit 40 (FIG. 2C), and further varies along the total variation pattern in which the individual variation patterns of the devices 20 and 30 are expressed.
[0039]
Therefore, the operation state recognition unit 17 refers to the individual variation period and individual variation pattern of each device 20 and 30 stored in advance in the storage unit 18, and in the total variation pattern of the total supply amount, for each individual variation period. A device in which the individual variation pattern is expressed is recognized as operating, and a device in which the individual variation pattern is not expressed in the individual variation period is recognized as being stopped.
[0040]
Furthermore, the supply abnormality detection means 16 starts the supply abnormality detection after recognizing that all the devices 20 and 30 are stopped, so that supply abnormality due to continuous operation of the devices 20 and 30 is detected. False detection can be avoided.
[0041]
In addition, in each apparatus 20 and 30 which has the fluctuation | variation operation means 22 and 32, between the control valves 24 and 34 and the consumption parts 26 and 36, the fluctuation | variation operation means 22, Even if the opening of each control valve 24, 34 is varied by 32 and the gas consumption is varied according to the individual variation pattern, the gas supply amount to the consumption units 26, 36 can be stabilized.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram illustrating an embodiment of the present invention. FIG. 2 is a graph showing fluctuation states of gas consumption and total supply amount.
10: Gas meter 15: Microcomputer (Utility consumer equipment operation recognition device)
16: Supply abnormality detection means 17: Operating state recognition means 18: Storage means 20, 30: Gas consumption equipment (utility consumption equipment)
22, 23: Fluctuating operation means

Claims (1)

Comprising a variation operation means for performing the consumption variation operation of varying in accordance with a predetermined individual variation pattern consumption at a predetermined individual variation period of utility, the utility consuming devices that consume utilities, the individual variation period and the individual fluctuation pattern Operating state recognition means for recognizing the operating state of the utility consuming device from the total variation pattern of the total supply amount of the utility to the consumption unit including the utility consuming device set to be identifiable from other utility consuming devices When,
Storage means for storing the individual variation pattern set in the utility consumer device as knowledge for identifying the utility consumer device,
Utility consumption device configured such that the operating state recognition unit can identify the utility consumption device by comparing the total variation pattern of the total supply amount of the utility and the individual variation pattern stored in the storage unit A driving recognition device,
Supply abnormality detection means for detecting utility supply abnormality according to the operation state of the utility consumer device recognized by the operation state recognition means,
If the supply abnormality detection means detects that the utility supply amount does not change during a predetermined determination period as a safety duration abnormality, or if the supply abnormality detection means falls below the no-flow state supply amount during the predetermined determination period In the configuration to execute leak detection to detect that there was no utility leak,
The individual variation period is set shorter than the determination period ,
A utility consumption device operation recognition device for detecting the utility supply abnormality using the supply amount obtained by subtracting the utility consumption amount of each utility consumer device in operation from the utility total supply amount .

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