CN115560816A - Gas meter control method - Google Patents
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- 238000000034 method Methods 0.000 title claims abstract description 95
- 230000002159 abnormal effect Effects 0.000 claims abstract description 47
- 239000007789 gas Substances 0.000 claims description 1153
- 238000001514 detection method Methods 0.000 claims description 123
- 239000002737 fuel gas Substances 0.000 claims description 22
- 238000005259 measurement Methods 0.000 claims description 14
- 230000008569 process Effects 0.000 description 42
- 230000006870 function Effects 0.000 description 14
- 239000003054 catalyst Substances 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000011217 control strategy Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
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- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010411 cooking Methods 0.000 description 2
- 238000002789 length control Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/001—Means for regulating or setting the meter for a predetermined quantity
- G01F15/002—Means for regulating or setting the meter for a predetermined quantity for gases
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Abstract
Disclosed is a gas meter control method, which comprises the following steps: acquiring the current gas use parameter quantity; determining the use parameter quantity of the preset gas; comparing the current gas use parameter with a preset gas use parameter to determine a gas consumption state, and realizing gas meter control based on the gas consumption state; wherein the gas usage parameters include: at least one of total gas usage amount, average gas flow, instantaneous gas flow, short-time total gas flow and piecewise gas function flow; the gas consumption state comprises a normal gas consumption state and an abnormal gas consumption state.
Description
Technical Field
The invention relates to the field of gas meters, in particular to a gas meter control method.
Background
The popularization of the pipeline gas application brings convenience to the life of residents and improves the life quality of the residents.
Currently, the gas meter is usually controlled based on the gas use duration, for example, the gas use duration is compared with a preset duration, and the inlet valve of the gas meter is closed when the preset duration is reached, so as to cut off the gas supply. However, on the one hand, the flexibility of control based on the gas usage duration is poor, and the preset duration cannot be flexibly adjusted in different usage scenarios (for example, when the same stove is in different situations of high-fire gas supply and low-fire gas supply; or when a plurality of different stoves with different gas supply requirements are used), and different gas supply requirements of different stoves or the same stove in different situations cannot be met. On the other hand, the control robustness and reliability of the gas meter control strategy based on the preset duration are poor, and potential safety hazards are easily caused. For example, when no gas is output due to a problem in a gas supply pipeline, the problem cannot be timely discovered and handled by using gas consumption time length control, so that an inlet valve of a gas meter is continuously opened under the condition of no gas; when the instantaneous gas supply increases rapidly, the inlet valve of the gas meter cannot be adjusted or closed in time, the stove is easy to damage, and even gas leakage can be caused.
Based on the foregoing, there is a need for a method that has high control robustness and reliability on the basis of implementing good control over a gas meter, and can implement flexible control over the gas meter in a simple and convenient manner based on a specific use scenario.
Disclosure of Invention
Aiming at the problems, the invention provides a gas meter control method. The gas meter control method provided by the invention can effectively improve the reliability and robustness of the gas meter control process on the basis of realizing good control of the gas meter, and can realize a method for flexibly controlling the gas meter in a simple and convenient manner based on a specific use scene.
According to an aspect of the present invention, a method for controlling a gas meter is provided, including: acquiring the current gas use parameter quantity; determining the use parameter quantity of the preset gas; comparing the current gas use parameter with a preset gas use parameter to determine a gas consumption state, and realizing gas meter control based on the gas consumption state; wherein the gas usage parameters include: at least one of total gas usage amount, average gas flow, instantaneous gas flow, short-time-period total gas flow and piecewise gas flow; the gas consumption state comprises a normal gas consumption state and an abnormal gas consumption state.
In some embodiments, determining the preset gas usage parameter comprises: acquiring a gas use mode; and determining the preset gas use parameter number based on the corresponding relation between the gas use mode and the use parameter number according to the gas use mode.
In some embodiments, the gas usage pattern is determined based on power and type of a gas appliance using gas, and the gas usage pattern includes: a big fire mode, a medium fire mode and a small fire mode.
In some embodiments, comparing the current gas usage parameter to a preset gas usage parameter to determine a gas usage status, and implementing gas table control based on the gas usage status comprises: and under the condition that the current gas use parameter is greater than or equal to a preset gas use parameter, determining that the gas consumption state is an abnormal gas consumption state, and controlling a gas valve of the gas meter to stop gas supply.
In some embodiments, the method further comprises: starting timing of a first preset detection time period from the opening state of a gas valve of the gas meter, and detecting the gas use parameter in the first preset detection time period as the current gas use parameter; and comparing the current gas use parameter quantity in the first preset detection period with the first gas use lower limit threshold quantity, and controlling a gas valve of the gas meter to stop gas supply under the condition that the current gas use parameter quantity in the first preset detection period is less than or equal to the first gas use lower limit threshold quantity.
In some embodiments, if the current gas usage parameter amount in the first preset detection period is greater than the first gas usage lower threshold amount, the method further includes: starting timing of a second preset detection period at least after the first preset detection period is ended, detecting the gas use parameter quantity in the second preset detection period as the current gas use parameter quantity, and comparing the current gas use parameter quantity in the second preset detection period with a second gas use lower limit threshold quantity; and under the condition that the current gas use parameter quantity in the second preset detection period is less than or equal to the second gas use lower limit threshold quantity, controlling a gas valve of the gas meter to stop gas supply.
In some embodiments, the gas usage parameter is gas instantaneous flow, and wherein the method further comprises: detecting the instantaneous flow of the gas for many times; in two continuous detections, if the instantaneous gas flow is greater than or equal to the first additional preset gas use parameter, and the instantaneous gas flow detected in the last detection in the two detections is greater than the instantaneous gas flow detected in the previous detection, controlling a gas valve of the gas meter to stop gas supply; and wherein the first additional predetermined gas usage parameter is less than the predetermined gas usage parameter.
In some embodiments, adjacent two of the plurality of detections are separated by at least a preset detection separation period.
In some embodiments, the gas usage parameter amount is a gas instantaneous flow rate, and wherein the method further comprises a second additional preset gas usage parameter amount, the second additional preset gas usage parameter amount being less than the preset gas usage parameter amount; and if the acquired instantaneous gas flow in the preset flow measurement period is always larger than the second additional preset gas use parameter, controlling a gas valve of the gas meter to stop gas supply.
In some embodiments, the gas usage parameter amount is a gas piecewise function flow including a plurality of gas flow steps, the preset gas usage parameter amount includes a preset gas usage total amount corresponding to each gas flow step, and the current gas usage parameter amount includes a current gas usage total amount corresponding to each gas flow step; and wherein the method comprises: for each fuel gas flow gear, calculating the fuel gas usage proportion under the fuel gas flow gear based on the preset fuel gas usage total amount and the current fuel gas usage total amount under the fuel gas flow gear; and determining a gas consumption state based on the gas consumption occupation ratio under each gas flow gear, and realizing the control of the gas meter based on the gas consumption state.
In some embodiments, determining the gas usage status based on the gas usage occupancy at each gas flow gear, and implementing the gas table control based on the gas usage status comprises: adding the gas usage occupation ratios under each gas flow gear to obtain the total gas usage occupation ratio; and under the condition that the total gas usage proportion is larger than or equal to a preset usage proportion, determining that the gas consumption state is an abnormal gas consumption state, and controlling a gas valve of the gas meter to stop gas supply.
In some embodiments, the short period aggregate flow of gas is a total gas amount over a preset period interval.
In some embodiments, the gas usage parameter number is a plurality of gas usage parameter numbers, and the preset gas usage parameter number is a plurality of preset gas usage parameter numbers respectively corresponding to the plurality of gas usage parameter numbers.
In some embodiments, comparing the current gas usage parameter to a preset gas usage parameter to determine a gas usage status, and implementing gas table control based on the gas usage status comprises: and under the condition that at least one of the gas use parameters is larger than or equal to the corresponding preset gas use parameter, determining that the gas consumption state is an abnormal gas consumption state, and controlling a gas valve of the gas meter to stop gas supply.
In some embodiments, comparing the current gas usage parameter to a preset gas usage parameter to determine a gas usage status, and implementing gas table control based on the gas usage status comprises: and under the condition that each gas use parameter in the gas use parameters is larger than the corresponding preset gas use parameter, determining that the gas consumption state is an abnormal gas consumption state, and controlling a gas valve of the gas meter to stop gas supply.
The gas meter control method provided by the invention can be used for well realizing reliable control of the gas meter, and can be used for realizing a method for flexibly controlling the gas meter in a simple and convenient manner based on a specific use scene.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts. The following drawings are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the invention.
FIG. 1 illustrates an exemplary flow chart of a gas meter control method 100 according to an embodiment of the invention;
FIG. 2 illustrates an exemplary flowchart of a process S102 for determining a preset gas usage parameter in accordance with an embodiment of the present disclosure;
FIG. 3 illustrates an exemplary flow chart of a process 110 for implementing gas supply control based on a first lower gas usage threshold in accordance with an embodiment of the disclosure;
fig. 4 shows a gas control process based on a second preset detection period and a second gas usage lower limit value;
FIG. 5 illustrates an exemplary flow chart of a process 120 for controlling a gas meter based on a first additional preset gas usage parameter according to embodiments of the disclosure;
FIG. 6 illustrates an exemplary flow chart of a process 130 for implementing gas meter control based on piecewise function flow;
fig. 7 shows an exemplary flowchart of a process S132 of determining a gas usage state and controlling a gas meter based on the gas usage percentage in each gas flow range according to an embodiment of the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present invention will be described below clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments of the present invention, also belong to the protection scope of the present invention.
As used in this application and the appended claims, the terms "a," "an," "the," and/or "the" are not intended to be inclusive in the singular, but rather are intended to be inclusive in the plural unless the context clearly dictates otherwise. In general, the terms "comprises" and "comprising" are intended to cover only the explicitly identified steps or elements as not constituting an exclusive list and that the method or apparatus may comprise further steps or elements.
Flow charts are used herein to illustrate operations performed by systems according to embodiments of the present application. It should be understood that the preceding or following operations are not necessarily performed in the exact order in which they are performed. Rather, the various steps may be processed in reverse order or simultaneously, as desired. Meanwhile, other operations may be added to the processes, or a certain step or several steps of operations may be removed from the processes.
Currently, the gas meter is generally controlled based on a gas use duration, for example, the gas use duration is compared with a preset duration, and the gas meter inlet valve is closed when the preset duration is reached, so as to cut off the gas supply. However, on the one hand, the flexibility of control based on the gas usage duration is poor, and the preset duration cannot be flexibly adjusted in different usage scenarios (for example, when the same stove is in different situations of high-fire gas supply and low-fire gas supply; or when a plurality of different stoves with different gas supply requirements are used), and different gas supply requirements of different stoves or the same stove in different situations cannot be met. On the other hand, the control robustness and reliability of the gas meter control strategy based on the preset duration are poor, and potential safety hazards are easily caused. For example, when no gas is output due to a problem in a gas supply pipeline, the problem cannot be timely discovered and handled by using gas consumption time length control, so that an inlet valve of a gas meter is continuously opened under the condition of no gas; when the instantaneous gas supply increases rapidly, the inlet valve of the gas meter cannot be adjusted or closed in time, the stove is easy to damage, and even gas leakage can be caused.
Based on the method, on the basis of realizing good control over the gas meter, the method has high control robustness and reliability, and can realize flexible control over the gas meter in a simple and convenient mode based on a specific use scene.
It should be understood that the gas meter mentioned in the present application refers to a meter-like member provided in a gas supply line for controlling the supply of gas. For example, the gas meter may include, for example, only one gas valve, and when the gas valve is opened, the gas in the pipeline can be supplied to the outside; when the gas valve is closed, the gas in the pipeline cannot be supplied outwards. The embodiment of the present disclosure is not limited by the specific composition structure of the gas meter.
Fig. 1 shows an exemplary flowchart of a gas meter control method 100 according to an embodiment of the present invention.
Referring to fig. 1, first, in step S101, the current gas usage parameter is acquired.
The gas use parameter quantity refers to a parameter quantity for representing the gas use condition. For example, the gas usage parameters may include: at least one of total gas usage, average gas flow, instantaneous gas flow, short-time total gas flow and piecewise gas flow.
The total gas usage amount is a total gas usage parameter amount from the gas starting use time to the current use time in the gas use process, and is intended to globally reflect the whole gas usage state in the gas use process.
The average gas flow rate is the average gas flow rate from the time when the gas starts to be used to the current use time in the use process of the gas, and is intended to globally reflect the overall gas flow rate state in the use process of the gas.
The gas instantaneous flow refers to the instantaneous use parameter of the gas at the current use time, and is intended to reflect the gas local use parameter condition at the moment.
The short-time total flow of the gas refers to the total gas amount in a preset time interval, which can be set according to actual needs, for example, and is intended to reflect the gas use parameter condition in a preset time interval concerned by a user.
The gas piecewise function flow rate refers to a gas flow rate within a preset gas flow rate range (which will be described in more detail below with reference to fig. 6 and 7).
The current gas use parameter is a gas use parameter in the current gas use process, and it should be understood that the current gas use parameter may be one or more of the current gas use total amount, the current gas average flow, the current gas instantaneous flow, the current gas short-time total flow, and the current gas piecewise function flow, according to the actual needs, as described above.
Thereafter, in step S102, the preset gas usage parameter amount is determined.
The preset gas use parameter number is a preset value of the gas use parameter number. It should be understood that, as mentioned above, the preset gas usage parameter amount may be one or more of a preset gas usage total amount, a preset gas average flow rate, a preset gas instantaneous flow rate, a preset gas short-period total flow rate, and a preset gas piecewise function flow rate according to actual needs.
The corresponding preset gas usage parameter may be set based on the usage pattern of the user, for example, or may be determined by the input information of the user. It should be understood that the embodiments of the present disclosure are not limited by the specific setting manner of the preset gas usage parameter.
For example, the preset gas usage parameter may be, for example, an upper limit value of the gas usage parameter, or a normal usage interval of the gas usage parameter. The fuel gas utilization parameter may be represented as a single numerical value, a threshold range interval, multiple threshold range intervals or a piecewise function, for example, and the embodiments of the present disclosure are not limited by the specific composition and representation manner of the preset fuel gas utilization parameter.
After the current gas usage parameter and the preset gas usage parameter of the gas meter are obtained, in step S103, the current gas usage parameter is compared with the preset gas usage parameter to determine a gas usage state, and the gas meter is controlled based on the gas usage state.
The gas consumption state comprises a normal gas consumption state and an abnormal gas consumption state. The normal gas consumption state refers to the condition that gas is well supplied through a gas pipeline and a gas meter; the abnormal gas consumption state refers to a situation that gas cannot be supplied well, and specifically, the abnormal gas consumption state may include, for example: the gas supply quantity is increased suddenly due to the abnormal gas pipeline because the gas cannot be supplied (the gas supply quantity is almost 0) due to the pipeline blockage; gas leakage, etc. It should be appreciated that embodiments of the present disclosure are not limited by the specific composition of the gas normal gas usage and abnormal gas usage states.
The process of comparing the current gas usage parameter with the preset gas usage parameter to determine the state of the gas usage amount may be more specifically described, for example: for example, if the preset gas usage parameter is the upper limit of gas usage (if the preset gas usage parameter is greater than or equal to the upper limit, the abnormal gas usage state is represented), if the current gas usage parameter is greater than or equal to the preset gas usage parameter, the abnormal gas usage state may be determined; if the current gas use parameter quantity is smaller than the preset gas use parameter quantity, the gas consumption state can be determined as a normal gas consumption state.
It should be appreciated that the above only gives an example of comparing the current gas usage parameter with the preset gas usage parameter.
For example, implementing gas table control based on gas usage status may include: and when the gas consumption state is an abnormal gas consumption state, stopping gas supply by controlling a gas valve of the gas meter.
Based on the above, in the present application, by controlling the gas meter based on the gas consumption, specifically, by obtaining the current gas usage parameter, determining the preset gas usage parameter, comparing the current gas usage parameter with the preset gas usage parameter to determine the gas consumption state, and implementing the gas meter control based on the gas consumption state, the gas meter can be reliably controlled according to the gas consumption state, and in addition, the preset gas usage parameter can be flexibly set via the user requirements and the usage mode to implement the flexible gas meter control; and the gas use parameters are further set to include: the set current gas use parameter can reflect the characteristics of multiple aspects in the gas supply process from the whole to the part from the total quantity to the instantaneous state, so that the abnormal gas supply state can be well judged under the abnormal condition of no gas supply caused by instantaneous gas surge or gas supply pipeline blockage, the gas meter is controlled to perform corresponding treatment, and the gas leakage risk is reduced.
In some embodiments, the above process of determining the preset gas usage parameter may be described in more detail, for example. Fig. 2 shows an exemplary flowchart of a process S102 of determining a preset gas usage parameter according to an embodiment of the present disclosure.
Referring to fig. 2, first, in step S1021, a gas usage pattern is acquired.
The gas usage mode refers to a mode of a current gas supply, and may be determined according to a type of a gas appliance using gas, for example. For example, when the gas appliance is a water heater, the gas usage mode may be set to a water heater mode; when the gas appliance is a pan, the gas use mode is a pan mode. Or it may be manually selected by the user to be in a different gas usage mode for each gas-using appliance (e.g., to be in "big fire mode" or "little fire mode"). The type and power of the gas appliance can also be integrated to determine the gas usage pattern. Embodiments of the present disclosure are not limited by the particular manner in which the gas usage pattern is obtained.
Thereafter, in step S1022, a preset gas usage parameter is determined based on the correspondence between the gas usage pattern and the usage parameter according to the gas usage pattern.
For example, a gas usage pattern and a gas usage parameter amount correspondence table may be set, and after the gas usage pattern is acquired, the corresponding gas usage parameter amount may be obtained by table lookup. For example, if the gas using mode is the 'water heater mode', the corresponding gas average flow range is 1-1.3 m 3 H; if the gas using mode is 'pan mode', the corresponding gas average flow is 0.5-0.7 m 3 H is the ratio of the total weight of the catalyst to the total weight of the catalyst. Therefore, the gas use parameter corresponding to the gas use mode can be determined through table lookup.
Based on the above, in the application, when the preset gas use parameter is determined, the gas use mode is obtained firstly; and then, according to the gas use mode, determining the preset gas use parameters based on the corresponding relation between the gas use mode and the use parameters, so that the corresponding gas use parameters can be flexibly determined according to the gas use mode, different types of gas appliances and multiple use conditions are well adapted, and the gas meter can be well controlled under multiple conditions.
In some embodiments, the gas usage pattern is determined based on power and type of a gas appliance using gas, and the gas usage pattern includes: a big fire mode, a medium fire mode and a small fire mode.
The gas usage pattern is determined based on the power and type of the gas appliance using gas, and the gas usage pattern is determined by comprehensively considering the type of the gas appliance currently used and the specific use state of the gas appliance (i.e., different power in the current situation) when determining the gas usage pattern.
The big fire mode refers to the gas use state with larger total gas consumption and average gas flow, for example; the medium fire mode refers to the general gas use state of the total gas use parameters and the average gas flow, for example; the low fire mode refers to, for example, a gas usage state in which the total gas usage parameter or the average gas flow rate is small.
According to actual need, can set up the gas of predetermineeing that different gas usage pattern correspond and use parameter quantity in a flexible way. For example, when the stove is used for cooking with big fire, the gas use mode is, for example, in the "big fire mode", in this case, for example, the total gas use amount can be determined to be 2600L, and the average gas flow can be determined to be 2.4-3m 3 H; when the stove is used for stir-frying or stewing with medium fire, the gas use mode is in a 'medium fire mode', for example, the total gas use amount can be determined to be 2000L, and the average gas flow can be determined to be 2-2.4m 3 H; when the kitchen range is used for cooking soup with small fire, the gas use mode is in a 'small fire mode', for example, the total gas use amount can be determined to be 3000L, and the average gas flow can be determined to be 0.8m 3 /h。
In view of the above, the present application provides a gas usage pattern determined by integrating the power and type of a gas appliance using gas, and the gas usage pattern includes: the fire control system comprises three gears of a big fire mode, a middle fire mode and a small fire mode. On one hand, the setting modes of types and power are considered, so that for the same gas appliance, when the same gas appliance is in different gas use conditions, the gas use mode can be flexibly changed to adapt to the specific use scene, and the flexible and convenient gas meter control is realized; on the other hand, the adjustment of the gas using mode can be flexibly realized by setting a plurality of gas mode gears, so that the gas meter control method is suitable for various conditions, and the accuracy and the reliability of the gas meter control method are improved.
In some embodiments, the preset gas usage parameter is, for example, an upper usage limit value, and the above-mentioned process of comparing the current gas usage parameter with the preset gas usage parameter to determine a gas usage status, and implementing the gas meter control based on the gas usage status may, for example, more specifically include: and under the condition that the current gas use parameter is greater than or equal to a preset gas use parameter, determining that the gas consumption state is an abnormal gas consumption state, and controlling a gas valve of the gas meter to stop gas supply.
The gas valve refers to a valve part used for controlling the gas supply in the gas meter. It should be understood that, as mentioned above, the embodiments of the present disclosure are not limited by the structure, number and specific arrangement of the gas valves of the gas meter.
It should be understood that the gas supply may be stopped by, for example, closing the operation of the gas valve, or the gas valve may be controlled in other ways to stop the gas supply, and embodiments of the present disclosure are not limited by the particular manner of controlling the gas valve.
For example, if it is known that the average flow rate in a normal state is X in a certain gas usage mode, the preset gas average flow rate may be set to 1.8X, for example, and if the current gas average flow rate is greater than the preset gas average flow rate (1.8X), the gas usage state may be determined to be an abnormal gas usage state, and at this time, the gas valve of the gas meter may be controlled to stop the gas supply. However, it should be understood that the above only gives an example of the preset gas average flow rate, and the preset gas average flow rate may also be set to 1.2x,1.5x, etc., according to actual needs.
Based on the above, in the application, by setting the gas valve which determines that the gas consumption state is the abnormal gas consumption state and controls the gas meter under the condition that the current gas consumption parameter is greater than or equal to the preset gas consumption parameter, the gas supply is stopped, so that the use state can be determined well based on the comparison result of the current gas consumption parameter and the preset gas consumption parameter, the gas valve of the gas meter is controlled to stop the gas supply in response to the abnormal gas consumption parameter state of the gas in time, the flexibility of controlling the gas meter is improved, and the reliability of the gas supply is enhanced.
In some embodiments, the above method further comprises, for example, a process of controlling the gas supply based on a comparison of the current gas usage parameter with a first gas usage lower threshold value. Specifically, fig. 3 illustrates an exemplary flow chart of a process 110 for implementing gas supply control based on a first lower gas usage threshold in accordance with an embodiment of the disclosure.
Referring to fig. 3, first, in step S111, timing of a first preset detection period is started from when a gas valve of a gas meter is in an open state, and a gas usage parameter in the first preset detection period is detected as a current gas usage parameter.
The gas valve of the gas meter is in an open state, namely, the gas valve in the gas meter is opened, so that the gas in the pipeline can be supplied outwards.
The first preset detection period refers to a preset detection period, and the specific duration of the first preset detection period may be set according to actual needs, for example, 10 minutes, or 5 minutes. Embodiments of the present disclosure are not limited by the specific duration of the first preset detection period.
It should be understood that the gas usage parameter may be, for example, a total gas usage amount in the first preset detection period, or may also be a gas average flow rate in the first preset detection period, and the embodiments of the present disclosure are not limited by a specific composition of the gas usage parameter and the number thereof.
Thereafter, in step S112, the current gas usage parameter amount in the first preset detection period is compared with the first gas usage lower limit threshold amount.
It should be understood that the first gas usage lower threshold amount refers to a preset lower limit value of the gas usage parameter amount in the first preset detection period, and the first gas usage lower threshold amount is equal to or lower than the first gas usage lower threshold amount to indicate that the gas supply is abnormal.
It should be understood that the first lower threshold amount of gas usage may be set according to actual needs, for example, and embodiments of the present disclosure are not limited by the specific value of the first lower threshold amount of gas usage.
Thereafter, in step S113, in a case where the current gas usage parameter amount in the first preset detection period is less than or equal to the first gas usage lower limit threshold amount, the gas valve of the gas meter is controlled to stop gas supply.
It should be understood that, in the case that the current gas usage parameter amount is less than or equal to the first gas usage lower limit threshold amount, the process of controlling the gas valve of the gas meter to stop gas supply may stop gas supply by, for example, closing the gas valve, or may also control the gas valve to stop gas supply in other manners, and the embodiments of the present disclosure are not limited by the specific manner of controlling the gas valve.
For example, the first preset detection period may be set to 10 minutes, and the gas usage parameter amount may be set to the average gas flow rate in the first preset detection period, and at this time, for example, the first gas usage lower limit threshold (here, the gas average flow rate lower limit threshold) may be set to 0.03m 3 H is used as the reference value. At this time, if the gas average flow rate detected within 10 minutes after the gas valve of the gas meter is in the open state is 0.01m 3 And/h, if the average flow rate detected at this time is smaller than the first gas use lower limit threshold, it is possible to determine that the gas supply is abnormal, for example, and thereby control the gas valve of the gas meter to close,the gas supply is stopped.
Based on the above, in the present application, the current gas usage parameter amount is detected at the initial gas supply stage after the gas valve of the gas meter is opened, and the current gas usage parameter amount is compared with the first gas usage lower limit threshold amount, and the gas supply is stopped when the current gas usage parameter amount in the first preset detection period is less than or equal to the first gas usage lower limit threshold amount, so that good detection and response processing can be performed on the supply abnormal condition at the initial stage of the gas supply.
In some embodiments, in the case that the current gas usage parameter amount is greater than the first gas usage lower threshold amount in the first preset detection period, the method further includes a subsequent discrimination step based on a second preset detection period. Specifically, fig. 4 shows a gas control process based on the second preset detection period and the second gas usage lower limit value.
Referring to FIG. 4, steps S111-112 are as described above and will not be described herein. After comparing the current gas usage parameter amount in the first preset detection time period with the first gas usage lower limit threshold amount, if the current gas usage parameter amount in the first preset detection time period is greater than the first gas usage lower limit threshold amount, then firstly in step S114, at least after the first preset detection time period ends, timing of a second preset detection time period is started, and the gas usage parameter amount in the second preset detection time period is detected as the current gas usage parameter amount.
The timing of starting the second preset detection period at least after the end of the first preset detection period may be described in more detail, for example. For example, the detection of the second preset detection period may be started immediately after the first preset detection period ends; alternatively, after the first preset detection period ends, the gas may be continuously supplied for a certain period of time, and then the detection of the second preset detection period may be performed, for example, when the gas supply is close to the tail sound.
The second preset detection period is a preset detection period, and the specific duration of the second preset detection period may be set according to actual needs, for example, 10 minutes, or may also be set to 5 minutes. Embodiments of the present disclosure are not limited by the specific duration of the second preset detection period.
It should be understood that the first and second preset detection periods are only intended to distinguish a first detection period from when the gas valve of the gas meter is in the open state, and a second detection period from when the gas valve of the gas meter starts to be timed after the first detection period ends, and are not intended to limit the first and second preset detection periods. It should be appreciated that the first and second preset detection periods may have the same detection duration, for example, or the first and second preset detection periods may each have a different detection duration. The embodiments of the present disclosure are not limited by the relationship between the detection durations of the first and second preset detection periods.
It should be understood that the gas usage parameter amount may be, for example, a total gas usage amount in a second preset detection period, or may also be a gas average flow rate in the second preset detection period, and the embodiment of the present disclosure is not limited by a specific composition of the gas usage parameter amount and the number thereof.
Thereafter, in step S115, the current gas usage parameter in the second preset detection period is compared with the second gas usage lower limit threshold amount.
It should be understood that said second lower threshold amount of gas use refers to a preset lower limit of the amount of gas use parameter in the second preset detection period, equal to or lower than which is intended to indicate the presence of an abnormality in the gas supply.
It should be appreciated that the second lower fuel gas usage threshold amount may be set, for example, according to actual needs, and embodiments of the present disclosure are not limited by the specific value of the second lower fuel gas usage threshold amount.
For example, the second lower gas usage threshold amount may be the same value as the first lower gas usage threshold amount, or may be a different value from the first lower gas usage threshold amount. The embodiments of the present disclosure are not limited by the relationship of the first and second fuel gas usage lower limit threshold amounts.
Thereafter, in a case where the current gas usage parameter amount in the second preset detection period is equal to or less than the second gas usage lower limit threshold amount, the gas valve of the gas meter is controlled to stop the gas supply in step S116.
For example, the gas supply may be stopped by closing the gas valve, or the gas valve may be controlled in other manners to stop the gas supply, and the embodiment of the present disclosure is not limited by the specific manner of controlling the gas valve.
For example, the above-described process can be more specifically explained, for example. For example, the first preset detection period may be set to 10 minutes, and the gas usage parameter is set to the average gas flow rate in the first preset detection period, and at this time, for example, the first gas usage lower limit threshold (here, the gas average flow rate lower limit threshold) may be set to 0.03m 3 H is used as the reference value. At this time, within 10 minutes after the gas valve of the gas meter is in the open state, the average flow rate of the gas detected is 0.05m 3 At this time, after 10 minutes are finished, the current gas use parameter quantity is continuously determined in a second preset detection period, for example, the second preset detection period is 20 minutes, and the second gas use lower limit threshold quantity (here, the gas average flow lower limit threshold) is 0.03m 3 H is the ratio of the total weight of the catalyst to the total weight of the catalyst. After 10 minutes of the first preset detection period, for example, the gas is continuously supplied for a certain period of time (for example, 10 minutes), and then the detection of 20 minutes of the second gas detection period is started in the tail sound stage of the gas supply, for example, so that the current gas usage parameter (gas average flow rate) in the 20 minutes is 0.02m 3 And h, then the average gas flow is smaller than the second gas use lower limit threshold amount at this time, thereby judging that the gas supply amount has decreased and approaches a supply stop state, so that the gas meter can be controlled to stop the gas supply.
Based on the above, in the present application, after the detection comparison and determination is performed based on the first gas usage lower limit threshold value amount in the first preset detection time period, in the subsequent use process of the gas, the current gas amount is determined in the second preset detection time period, and the current gas amount is compared with the second gas usage lower limit threshold value, so that the gas meter states in the gas supply initial stage and the gas supply intermediate period can be considered, when the gas is initially supplied normally, and then the gas cannot be normally supplied due to the blockage of the gas caused by the failure of the pipeline or the failure of the gas meter itself during the gas supply, or when the gas supply is close to the end, the gas supply amount is significantly reduced, at this time, the current gas usage parameter amount in the second preset detection time period will be less than or equal to the second gas usage lower limit threshold value, so that the abnormal gas supply state can be fed back intuitively and timely, which is beneficial to timely finding and responding to the abnormality in the gas supply, and further improve the reliability and the safety of the gas supply.
In some embodiments, the gas usage parameter is an instantaneous gas flow rate, and the method further comprises a gas meter control method based on a first additional preset gas usage parameter. Fig. 5 illustrates an exemplary flow chart of a process 120 for controlling a gas meter based on a first additional preset gas usage parameter according to an embodiment of the disclosure.
Referring to fig. 5, first, in step S121, the gas instantaneous flow rate is detected a plurality of times.
The multiple detection of the instantaneous gas flow refers to multiple detection of the instantaneous gas supply in the gas supply process.
For example, if the gas supply time period is 20 minutes, for example, it may be set that gas instantaneous flow rate detection is performed once per minute, that is, gas instantaneous flow rate detection is performed at 1 st minute, 2 nd minute, and 3 rd minute of gas supply for 8230\8230, and 20 th minute of gas supply is detected, and 20 gas instantaneous flow rates are obtained through detection. Alternatively, the gas instantaneous flow rate may be detected every five minutes, and 4 gas instantaneous flow rates may be obtained through the detection.
Then, in step S122, in two consecutive detections, if the instantaneous gas flow rates are both greater than or equal to the first additional preset gas usage parameter, and the instantaneous gas flow rate detected in the last detection in the two detections is greater than the instantaneous gas flow rate detected in the previous detection, the gas valve of the gas meter is controlled to stop gas supply.
The continuous two-time detection refers to the adjacent two-time gas instantaneous flow detection process. And the first additional preset gas use parameter is smaller than the preset gas use parameter. Specifically, for example, the first additional preset gas usage parameter is eighty percent of the preset gas usage parameter, or may be fifty percent of the preset gas usage parameter.
The first additional gas usage parameter amount can be set according to actual needs, for example, or can be specified by a user. The embodiment of the present disclosure is not limited by the specific setting mode of the first additional gas use parameter.
And the above process may be described in more detail, for example: for example, if during the gas supply process, the gas instantaneous flow rate is detected every 10s, and in two adjacent detections (for example, the first detection and the second detection), if the detected gas instantaneous flow rates are the first gas instantaneous flow rate and the second gas instantaneous flow rate, respectively, if the first gas instantaneous flow rate and the second gas instantaneous flow rate are both greater than the first additional gas usage parameter, and the second gas instantaneous flow rate obtained in the second detection is greater than the first gas instantaneous flow rate obtained in the first detection (i.e., indicating that the gas flow rate is increasing in the two adjacent detections), the gas valve of the gas meter is controlled to stop the gas supply.
Based on the above, in the present application, through detecting the instantaneous gas flow many times, and in two consecutive detections, if the instantaneous gas flow is all greater than or equal to the first additional preset gas usage parameter amount, and the instantaneous gas flow detected at the next time in the two consecutive detections is greater than the instantaneous gas flow detected at the previous time, the gas valve of the gas meter is controlled to stop the gas supply, so that the increasing trend of the gas flow can be detected well, when the instantaneous gas flow at two adjacent times is all greater (greater than the first additional preset gas usage parameter amount) and the instantaneous gas flow shows an increasing trend in the two adjacent detections, by the method in the present application, the gas supply can be stopped effectively in time by controlling the gas valve of the gas meter, thereby avoiding abnormal supply risks and hidden dangers caused by the continued increase of the gas flow, and facilitating the improvement of the safety and reliability of the gas supply.
In some embodiments, adjacent two of the plurality of detections are separated by at least a preset detection separation period.
The preset detection interval period may be set by a system, for example, or may be set by a user according to actual conditions. The embodiments of the present disclosure are not limited by the setting mode and the setting duration of the preset detection interval period.
Through setting up this interval predetermined time interval between detecting many times and going on at least for can avoid carrying out many times with too short time interval and detecting many times, because can't well reflect the gas instantaneous flow change along with time and lead to the wrong judgement and the follow-up wrong processing's of gas usage condition the condition, the setting in this application has improved the reliability and the accuracy that detect, and can reflect the change of gas usage along with time better.
In some embodiments, the gas usage parameter is an instantaneous gas flow rate, and wherein the method further comprises the step of controlling the gas meter based on a second additional preset gas usage parameter and a preset flow rate measurement period.
Wherein the second additional preset gas usage parameter amount is less than the preset gas usage parameter amount. It will be appreciated that the second additional predetermined gas usage parameter is also less than the first additional predetermined gas usage parameter.
And if the acquired instantaneous gas flow in the preset flow measurement period is always larger than the second additional preset gas use parameter, controlling a gas valve of the gas meter to stop gas supply.
The flow measurement period may be set by a user, for example, according to actual needs, or may be set by the system. The flow measurement period may be 120s or 80s, for example, and the embodiment of the disclosure is not limited by the specific duration and setting manner of the flow measurement period.
For example, the gas instantaneous flow rate may be calculated every second within the flow measurement period, or may be calculated at preset detection intervals, for example, the gas instantaneous flow rate may be acquired every 5 seconds. Embodiments of the present disclosure are not limited by the specific number of times that the instantaneous flow of gas is detected within the flow measurement period.
The above process can be explained in more detail, for example. For example, if the flow rate measurement period is set to 120s and the second additional preset gas usage parameter is set to M1 (the second additional preset gas usage parameter is smaller than the first additional preset gas usage parameter, for example), then if 5 times of gas instantaneous flows are detected in the flow rate measurement period, and the 5 gas instantaneous flows obtained by the 5 times of detection are all larger than the gas usage parameter M1, at this time, for example, the gas valve of the gas meter is controlled to stop gas supply.
Based on the above, in this application, through setting up and detecting the gas instantaneous flow in presetting the flow measurement period, and if the gas instantaneous flow that obtains all is greater than the additional gas of presetting in this preset flow measurement period and uses the parameter quantity, the gas valve of control gas table stops the gas supply for can be via the design of nimble control strategy, when the gas flow lasts and is in the high level in a certain period, control gas table in time in order to stop the gas supply, prevent the risk such as the gas leakage that probably produces or supply anomaly.
In some embodiments, the gas usage parameter is gas piecewise function flow. And the gas piecewise function flow comprises a plurality of gas flow gears, the preset gas use parameter quantity comprises a preset gas use total quantity corresponding to each gas flow gear, and the current gas use parameter quantity comprises a current gas use total quantity corresponding to each gas flow gear.
The fuel gas flow gears refer to different gear ranges of the fuel gas flow and represent different intervals of the fuel gas flow, and the fuel gas flow gears are not limited by the number and content of the fuel gas flow gears. For example, if the gas piecewise function flow has 3 gas flow steps A1, A2, A3, the gas flow steps are, for example: 0-5m 3 /h,5-10m 3 /h,10-15m 3 /h。
The preset gas use parameter amount comprises a preset gas use total amount corresponding to each gas flow gear, and the preset gas use total amount refers to: for each gas flow gear, the preset total gas usage amount under the gear is set, namely the maximum total gas usage amount which can be used under the flow gear is set for each gas flow gear.
For example, if there are 3 gas flow rate gears A1, A2, A3, the maximum total amount of gas that can be used in the gas flow rate gear A1 (i.e., the preset total amount of gas used) may be set to V s1 Accordingly, the maximum total gas amount that can be used (i.e., the preset total gas amount) at the gas flow rate gear A2 is V s2 The total amount of the gas which can be used at the maximum (namely, the total amount of the used gas is preset) under the gas flow gear A3 is V s3 。
The current gas use parameter quantity comprises a current gas use total quantity corresponding to each gas flow gear, which means the current gas use parameter quantity and comprises a current used gas total quantity under each gas flow gear.
For example, if there are 3 gas flow ranges A1, A2, A3, and the gas range A1 is 0-5m 3 H, if present, at 3m 3 When 0.3 hour is supplied, the total amount of the used gas (namely, the current gas use parameter corresponding to the gas flow gear A1) under the gas gear A1 at present is calculated to be 0.9m 3 。
And the method also comprises the process of controlling the gas meter based on the piecewise function flow. Fig. 6 illustrates an exemplary flow chart of a process 130 for implementing gas meter control based on piecewise function flow.
Referring to fig. 6, first, in step S131, for each gas flow gear, a gas usage proportion in the gas flow gear is calculated based on a preset gas usage total amount and a current gas usage total amount in the gas flow gear.
Calculating the gas usage occupied ratio under the gas flow gear refers to calculating the ratio occupied by the current gas usage total amount under the gas flow gear compared with the preset gas usage total amount.
The process may be described in more detail, for example, as follows: for example, if there are 3 gas flow ranges A1, A2, and A3, and for the gas range A1, the preset total gas usage amount is V s1 The current total gas consumption is V D1 For example, the gas usage proportion PA1= V at the gas flow gear A1 may be calculated D1 /V s1 。
Thereafter, in step S132, a gas usage state is determined based on the gas usage occupancy rate in each gas flow gear, and the gas table control is implemented based on the gas usage state.
The gas usage state determined based on the gas usage occupancy rate at each gas flow gear may be, for example: adding the gas usage occupation ratios under each gas flow gear to obtain the total gas usage occupation ratio; and under the condition that the total gas usage occupancy rate is greater than or equal to a preset usage occupancy rate, determining that the gas consumption state is an abnormal gas consumption state, and controlling a gas valve of the gas meter to stop gas supply.
It should be appreciated, however, that the above description is merely illustrative of one way to determine a gas usage status and control a gas meter. According to actual needs, other modes can be adopted, for example, comprehensive calculation can be performed based on the usage percentage under each gas flow gear and based on a preset algorithm, and the gas consumption state can be determined based on the calculation result.
The gas consumption state comprises a normal gas consumption state and an abnormal gas consumption state. The normal gas consumption state refers to the condition that gas is well supplied through a gas pipeline and a gas meter; the abnormal gas consumption state refers to a situation that gas cannot be supplied well, and specifically, the abnormal gas consumption state may include, for example: the gas cannot be supplied due to the blockage of the pipeline (the gas supply amount is almost 0), and the gas supply amount is increased rapidly due to the abnormity of the gas pipeline; gas leakage, etc. It should be appreciated that embodiments of the present disclosure are not limited by the specific composition of the gas normal gas usage and abnormal gas usage states.
For example, implementing gas table control based on gas usage status may include: when the gas consumption state is an abnormal gas consumption state, the gas valve of the gas meter is controlled to stop the gas supply.
Based on the above, in this application, use parameter for the gas piecewise function flow through setting up this gas to obtain predetermineeing gas use total amount and current gas use total amount under each gas flow gear, use the gas volume state of determining based on the gas that obtains calculated and use the percentage, realize controlling the gas table, make can realize the control to gas supply process more nimble and accurately, with the different application scenes of good adaptation, and the gas use total amount condition of each gas flow gear and the concrete gas under each gas flow gear use parameter condition have been synthesized in control process. Specifically, for example, different preset gas use total amounts can be set for different flow gears according to actual needs, so that the total gas amount used under different gas flow gears is controlled in the primary gas supply process, and high-precision and high-reliability control is realized.
In some embodiments, the determination of the gas usage status based on the gas usage occupancy ratio at each gas flow gear, and the implementation of the process of controlling the gas table based on the gas usage status may be described in more detail, for example. Fig. 7 shows an exemplary flowchart of a process S132 of determining a gas usage state and controlling a gas meter based on the gas usage percentage in each gas flow gear according to an embodiment of the present disclosure.
Referring to fig. 7, first, in step S1321, the gas usage occupancy rates at the respective gas flow rate steps are added to obtain a total gas usage occupancy rate.
In particular, for example in the current piece-wise function trafficHave n gas flow gears, and to wherein the ith gas flow gear, the total amount is used for the gas that predetermines of this gas flow gear is V Si And the total current gas usage amount corresponding to the gas flow gear is V Di Then, the total gas usage fraction can be calculated, for example, according to the following equation 1):
wherein, P is the total gas usage percentage, PAi is the gas usage percentage corresponding to the ith gas flow gear Ai, i is a positive integer greater than or equal to 1 and less than or equal to the total number n of the gas flow gears, and the meanings of the rest parameters are as described above.
Thereafter, in step S1322, when the total gas usage percentage is equal to or greater than a preset usage percentage, the gas usage state is determined to be an abnormal gas usage state, and the gas valve of the gas meter is controlled to stop the supply of gas.
The preset usage percentage may be set according to actual needs, for example, and may be set to 1, or may also be set to 0.8, and embodiments of the present disclosure are not limited by a specific value of the preset usage percentage.
For example, if the preset occupied gas usage ratio is set to 1, and if there are 3 gas flow rate gears A1, A2, A3, and their corresponding gas usage ratios are 0.2,0.5,0.4, respectively, at which time the total gas usage ratio P =0.2+0.5+0.4=1.1, it is known that the total gas usage ratio is greater than the preset occupied gas usage ratio, it is indicated that the current total gas usage ratio has exceeded the preset value, at which time the gas usage state may be determined as an abnormal gas usage state, and the gas valve is controlled to stop gas supply.
Based on the above, in the application, the total gas usage occupancy ratio is calculated by adding the gas usage occupancy ratios of the various gas flow gears, so that the obtained total gas usage occupancy ratio can well reflect the global gas consumption condition under the various flow gears; on one hand, when the gas usage occupation ratio of a single gas flow gear is remarkably and abnormally increased (for example, the gas usage occupation ratio under the single gas flow gear is larger than the preset usage occupation ratio), the gas supply can be interrupted in time; on the other hand, by acquiring the total gas usage percentage and determining the abnormal gas usage state based on the total gas usage percentage, the total gas usage parameter amount in gas usage can be controlled globally, for example, when the gas usage percentage in each gas flow gear is in a normal interval but the total gas usage percentage is greater than the preset usage percentage, the gas valve can be controlled in time to stop gas supply, so that the total gas usage parameter amount is controlled in a reasonable and reliable range, the control accuracy and flexibility of gas supply are improved, and various application scenarios can be flexibly adapted.
In some embodiments, when the method for controlling the gas meter is implemented by using the gas piecewise function flow rate shown in fig. 7, the method further includes: detecting the instantaneous gas flow, and re-executing the process of the method 130 when the instantaneous gas flow is smaller than a preset gas instantaneous flow lower limit threshold, and calculating the gas usage percentage in each gas flow gear based on the preset gas usage total amount and the current gas usage total amount in the gas flow gear; and determining a gas consumption state based on the gas consumption occupation ratio under each gas flow gear, and realizing the control of the gas meter based on the gas consumption state.
Based on the above, in this application, through at gas instantaneous flow, recalculating total gas usage accounts for the ratio under the condition that gas instantaneous flow is less than preset gas instantaneous flow lower limit threshold for total gas usage accounts for can in time be based on the service condition update total gas usage accounts for the ratio, thereby ensure the real-time reliable control to the gas supply.
In some embodiments, the short period aggregate flow of gas is a total gas amount over a preset period interval.
The preset time interval may be set according to actual needs, for example, and the embodiment of the present disclosure is not limited by the setting mode and the setting duration of the preset time interval.
Based on the above, through gathering the gas short-time total flow in this application for can be interested in the user or the length section that the gas abnormal supply appears easily carries out key attention, gather the total gas volume in this preset period interval, and use the parameter quantity to compare with the preset gas based on this total gas volume and come the gas state of confirming and realize the control to the gas supply, thereby be favorable to carrying out the gas supply state judgement and the control in the key period more nimble.
In some embodiments, the gas usage parameter number is a plurality of gas usage parameter numbers, and the preset gas usage parameter number is a plurality of preset gas usage parameter numbers respectively corresponding to the plurality of gas usage parameter numbers.
Based on the above, in the present application, by collecting a plurality of gas usage parameters and determining the preset gas usage parameters respectively corresponding to the plurality of gas usage parameters, the judgment, follow-up and processing of the gas supply state can be comprehensively performed based on a plurality of types of parameters in the gas supply, and on one hand, each characteristic parameter in the gas supply process can be more comprehensively known; on the other hand, the method is also beneficial to the comprehensive multi-parameter quantity to carry out discrimination processing, improves the judgment accuracy of the gas consumption state and enhances the reliability.
In some embodiments, comparing the current gas usage parameter to a preset gas usage parameter to determine a gas usage status, and implementing gas table control based on the gas usage status comprises: and under the condition that at least one of the gas use parameters is larger than or equal to the corresponding preset gas use parameter, determining that the gas consumption state is an abnormal gas consumption state, and controlling a gas valve of the gas meter to stop gas supply.
Based on the above, in the present application, under the condition that at least one of the gas usage parameters is greater than or equal to the corresponding preset gas usage parameter, the gas usage state is determined to be the abnormal gas usage state, and the gas valve of the gas meter is controlled to stop gas supply, so that when one of the multiple usage parameters is abnormal (greater than the preset gas usage parameter), the gas meter can be quickly responded and controlled to stop gas supply, and the abnormal judgment speed and the response speed of gas supply are improved.
In some embodiments, comparing the current gas usage parameter to a preset gas usage parameter to determine a gas usage status, and implementing gas table control based on the gas usage status comprises: and under the condition that each gas use parameter in the gas use parameters is larger than the corresponding preset gas use parameter, determining that the gas consumption state is an abnormal gas consumption state, and controlling a gas valve of the gas meter to stop gas supply.
Based on the above, in the application, under the condition that each gas use parameter in the gas use parameters is larger than the corresponding preset gas use parameter, the gas consumption state is determined to be the abnormal gas consumption state, and the gas valve of the gas meter is controlled to stop gas supply, so that the conditions of a plurality of use parameters can be comprehensively considered, the condition that the gas supply is interrupted due to the fact that the measurement process of a certain use parameter is abnormal is prevented, and the accuracy of gas meter control is improved.
This application uses specific language to describe embodiments of the application. Reference to "a first/second embodiment," "an embodiment," and/or "some embodiments" means a feature, structure, or characteristic described in connection with at least one embodiment of the application. Therefore, it is emphasized and should be appreciated that two or more references to "an embodiment" or "one embodiment" or "an alternative embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, some features, structures, or characteristics of one or more embodiments of the present application may be combined as appropriate.
Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The foregoing is illustrative of the present invention and is not to be construed as limiting thereof. Although a few exemplary embodiments of this invention have been described, those skilled in the art will readily appreciate that many modifications are possible in the exemplary embodiments without materially departing from the novel teachings and advantages of this invention. Accordingly, all such modifications are intended to be included within the scope of this invention as defined in the claims. It is to be understood that the foregoing is illustrative of the present invention and is not to be construed as limited to the specific embodiments disclosed, and that modifications to the disclosed embodiments, as well as other embodiments, are intended to be included within the scope of the appended claims. The invention is defined by the claims and their equivalents.
Claims (15)
1. A gas meter control method includes:
acquiring the current gas use parameter quantity;
determining the use parameter quantity of the preset gas;
comparing the current gas use parameter with a preset gas use parameter to determine a gas consumption state, and realizing gas meter control based on the gas consumption state;
wherein, the gas use parameter number includes: at least one of total gas usage amount, average gas flow, instantaneous gas flow, short-time total gas flow and piecewise gas function flow; the gas consumption state comprises a normal gas consumption state and an abnormal gas consumption state.
2. The gas meter control method according to claim 1, wherein determining the preset gas usage parameter comprises:
acquiring a gas use mode;
and determining the preset gas use parameters based on the corresponding relation between the gas use modes and the use parameters according to the gas use modes.
3. The gas meter control method according to claim 2, wherein the gas usage pattern is determined based on power and type of a gas appliance using gas, and the gas usage pattern includes: big fire mode, medium fire mode, small fire mode.
4. The gas meter control method of claim 1, wherein comparing the current gas usage parameter with a preset gas usage parameter to determine a gas usage status, and implementing gas meter control based on the gas usage status comprises:
and under the condition that the current gas use parameter is greater than or equal to the preset gas use parameter, determining that the gas consumption state is an abnormal gas consumption state, and controlling a gas valve of the gas meter to stop gas supply.
5. The gas meter control method according to claim 1, further comprising:
starting timing of a first preset detection time period from the opening state of a gas valve of the gas meter, and detecting the gas use parameter in the first preset detection time period as the current gas use parameter;
and comparing the current gas use parameter quantity in the first preset detection time period with the first gas use lower limit threshold quantity, and controlling a gas valve of the gas meter to stop gas supply under the condition that the current gas use parameter quantity in the first preset detection time period is less than or equal to the first gas use lower limit threshold quantity.
6. The gas meter control method according to claim 5, wherein if the current gas usage parameter amount in a first preset detection period is greater than the first gas usage lower limit threshold amount, the method further comprises:
starting timing of a second preset detection period at least after the first preset detection period is finished, detecting the gas use parameter amount in the second preset detection period as the current gas use parameter amount,
comparing the current gas use parameter amount in a second preset detection period with a second gas use lower limit threshold amount;
and under the condition that the current gas use parameter quantity in the second preset detection period is less than or equal to the second gas use lower limit threshold quantity, controlling a gas valve of the gas meter to stop gas supply.
7. The gas meter control method according to claim 6, wherein the gas usage parameter is a gas instantaneous flow rate, and wherein the method further comprises:
detecting the instantaneous flow of the gas for many times;
in two continuous detections, if the instantaneous gas flow is greater than or equal to the first additional preset gas use parameter, and the instantaneous gas flow detected in the last detection in the two detections is greater than the instantaneous gas flow detected in the previous detection, controlling a gas valve of the gas meter to stop gas supply;
and wherein the first additional predetermined gas usage parameter is less than the predetermined gas usage parameter.
8. The gas meter control method according to claim 7, wherein at least a preset detection interval period is provided between two adjacent detections in the plurality of detections.
9. The gas meter control method according to claim 1, wherein the gas usage parameter is an instantaneous gas flow rate, and wherein the method further comprises a second additional preset gas usage parameter, the second additional preset gas usage parameter being smaller than the preset gas usage parameter;
and if the acquired instantaneous gas flow in the preset flow measurement period is always larger than the second additional preset gas use parameter, controlling a gas valve of the gas meter to stop gas supply.
10. The gas meter control method according to claim 1, wherein the gas usage parameter amount is a gas piecewise function flow rate, the gas piecewise function flow rate includes a plurality of gas flow rate steps, the preset gas usage parameter amount includes a preset gas usage total amount corresponding to each gas flow rate step, and the current gas usage parameter amount includes a current gas usage total amount corresponding to each gas flow rate step;
and wherein the method comprises:
for each fuel gas flow gear, calculating the fuel gas usage proportion under the fuel gas flow gear based on the preset fuel gas usage total amount and the current fuel gas usage total amount under the fuel gas flow gear;
and determining a gas consumption state based on the gas consumption occupation ratio under each gas flow gear, and realizing the control of the gas meter based on the gas consumption state.
11. The gas meter control method according to claim 10, wherein determining a gas usage state based on the gas usage percentage in each gas flow gear, and implementing gas meter control based on the gas usage state comprises:
adding the gas usage occupation ratios under each gas flow gear to obtain the total gas usage occupation ratio;
and under the condition that the total gas usage proportion is larger than or equal to a preset usage proportion, determining that the gas consumption state is an abnormal gas consumption state, and controlling a gas valve of the gas meter to stop gas supply.
12. A gas meter control method as claimed in claim 1, wherein said gas short period aggregated flow rate is a total gas amount within a preset period interval.
13. The gas meter control method according to claim 1, wherein the gas usage parameter is a plurality of gas usage parameters, and the preset gas usage parameter is a plurality of preset gas usage parameters respectively corresponding to the plurality of gas usage parameters.
14. The gas meter control method of claim 13, wherein comparing the current gas usage parameter with a preset gas usage parameter to determine a gas usage status, and implementing gas meter control based on the gas usage status comprises:
and under the condition that at least one of the gas use parameters is larger than or equal to the corresponding preset gas use parameter, determining that the gas consumption state is an abnormal gas consumption state, and controlling a gas valve of the gas meter to stop gas supply.
15. The gas meter control method of claim 13, wherein comparing the current gas usage parameter with a preset gas usage parameter to determine a gas usage status, and implementing gas meter control based on the gas usage status comprises:
and under the condition that each gas use parameter in the gas use parameters is larger than the corresponding preset gas use parameter, determining that the gas consumption state is an abnormal gas consumption state, and controlling a gas valve of the gas meter to stop gas supply.
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| CN202210272903.XA CN115560816A (en) | 2022-03-18 | 2022-03-18 | Gas meter control method |
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| CN202210272903.XA CN115560816A (en) | 2022-03-18 | 2022-03-18 | Gas meter control method |
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