CN115247809A - Method for carrying out gas safety management by learning gas use habits of users - Google Patents

Method for carrying out gas safety management by learning gas use habits of users Download PDF

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Publication number
CN115247809A
CN115247809A CN202210926715.4A CN202210926715A CN115247809A CN 115247809 A CN115247809 A CN 115247809A CN 202210926715 A CN202210926715 A CN 202210926715A CN 115247809 A CN115247809 A CN 115247809A
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flow
interval
value
gas
gas meter
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于长松
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Shandong Zhuocheng Intelligent Technology Co ltd
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Shandong Zhuocheng Intelligent Technology Co ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C3/00—Stoves or ranges for gaseous fuels
    • F24C3/14—Stoves or ranges for gaseous fuels with special adaptation for travelling, e.g. collapsible
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/10—Control of fluid heaters characterised by the purpose of the control
    • F24H15/12—Preventing or detecting fluid leakage
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/10—Control of fluid heaters characterised by the purpose of the control
    • F24H15/128—Preventing overheating
    • F24H15/132—Preventing the operation of water heaters with low water levels, e.g. dry-firing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/20—Arrangement or mounting of control or safety devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F25/00—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
    • G01F25/10—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of flowmeters
    • G01F25/15—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of flowmeters specially adapted for gas meters

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Volume Flow (AREA)

Abstract

The invention provides a method for carrying out gas safety management by learning gas use habits of users, which comprises the following specific steps: s1: installing an intelligent gas meter on a user gas pipeline, and reading a flow value once every certain time by the intelligent gas meter; s2: establishing a plurality of flow management intervals in the measuring range of the intelligent gas meter, wherein the maximum value of each flow management interval is 1.2 times of the full measuring range of the meter; s3: according to the gas consumption habit of a user, acquiring a threshold value a of the number of flow rate values of each flow rate management interval in a mode that the intelligent gas meter independently learns or sends the learning to the intelligent gas meter after cloud learning; s4: and monitoring the real-time flow through the intelligent gas meter, judging that the flow is abnormal when the frequency of the real-time flow falling into a certain flow management interval is more than a, closing a valve and stopping gas supply. The gas leakage monitoring system solves the technical problems that the existing resident user gas leakage monitoring needs higher modification cost and the reliability needs to be improved. The invention can be widely applied to the field of gas safety control.

Description

Method for carrying out gas safety management by learning gas use habits of users
Technical Field
The invention relates to a gas safety management method, in particular to a method for performing gas safety management by learning gas use habits of users.
Background
At present, fuel gas is generally used in resident life, but when the fuel gas is convenient to use, once the fuel gas is leaked, the fuel gas brings damage which is difficult to measure, and therefore the fuel gas needs to be timely and effectively monitored for leakage in the using process. The existing leakage monitoring mode needs to greatly modify the original system, the modification and upgrading cost is high, and the use reliability needs to be improved.
Disclosure of Invention
The invention provides a method for carrying out gas safety management by learning gas consumption habits of users, which is low in modification cost and high in use reliability and aims at solving the technical problems that the gas leakage monitoring of the existing resident users needs higher modification cost and the reliability needs to be improved.
Therefore, the technical scheme of the invention is a method for carrying out gas safety management by learning gas use habits of users, which comprises the following specific steps:
s1: installing an intelligent gas meter on a user gas pipeline, and reading a flow value once by the intelligent gas meter at a certain interval T;
s2: establishing a plurality of flow management intervals in the measuring range of the intelligent gas meter, wherein the maximum value of the flow management intervals is 1.2 times of the full measuring range of the meter;
s3: according to the gas consumption habit of a user, the threshold value a of the number of flow rate values in each flow rate management interval is determined in a mode that the intelligent gas meter independently learns or sends the learned information to the intelligent gas meter after being learned by a cloud;
s4: and monitoring the real-time flow through the intelligent gas meter, judging that the gas using state is abnormal when the frequency of finding that the real-time flow falls into a certain flow management interval is more than a, closing a valve and stopping gas supply.
Preferably, the specific steps of obtaining the flow value number threshold a of each flow management interval in an autonomous learning manner of the intelligent gas meter are as follows:
s1.1: reading real-time flow through the intelligent gas meter, if the read flow value is zero, abandoning the record, and if the flow value is not zero, recordingThe flow rate value of recording and reading is Q1, and Q1 is taken as a starting point Q 0 Simultaneously recording the number of times q1 as 1, and reading the flow value as q2 after the interval time T;
s1.2: setting a flow rate change rate threshold value as A, if | q2-q1|/q1 is less than or equal to A, determining that the flow rate is not changed, and simultaneously recording the times of q1 plus 1; if | Q2-Q1|/Q1> A, the flow rate is considered to be changed, the number of times of Q1 is stored, and Q2 is used as a starting point Q again 0 Reading a flow value q3 after a time interval T, if | q3-q2|/q2 is less than or equal to A, determining that the flow is not changed, and simultaneously recording the number of times of q2 and adding 1; if | q3-q2|/q2 > A, the flow is considered to be changed, the counting number of q2 is stored, and the like; a is set according to the metering precision of the intelligent gas meter;
s1.3: if the flow value after the initial point is monitored to be zero, the counting number of the initial point is stored, the interval time T is continued to obtain the flow value until the flow value which is not zero is obtained and is used as a new initial point Q 0 (ii) a Repeating S1.2;
s1.4: when a Q is obtained 0 Then, first, Q is observed 0 Which flow management section belongs to the intelligent gas meter corresponds to Q 0 The number of counts is the number of counts in the interval, and every time a Q is obtained later 0 And Q 0 The step is repeated for the number of times, and if in the same interval, Q is obtained later 0 If the number of counts is greater than the number of counts obtained previously, the new number of counts replaces the original number of counts, and Q is always maintained in the interval 0 The maximum value of the counting times;
s1.5: when Q is in a certain interval 0 After the number of iterations reaches a certain number, or when the obtained Q is 0 When the number reaches a set value, stopping iteration, and multiplying the last counting number by the safety coefficient to serve as a counting number threshold a of the interval; not obtaining Q 0 When the traffic control interval of (1) is set, a =0.
Preferably, a communication module is installed on the intelligent gas meter, the intelligent gas meter is connected with a cloud end through the communication module, the intelligent gas meter reads flow values once at intervals T, the read flow values are stored, the flow values are uploaded to the cloud end after a certain number of the flow values are stored, the cloud end processes data, a counting threshold value a is generated, and the counting threshold value a is sent to a meter end.
Preferably, the cloud processes the data to generate a count threshold a of each traffic management interval, and the specific steps are as follows:
s2.1: the cloud end sequentially reads flow data uploaded by the intelligent gas meter end, if the flow value is read to be zero, the record is abandoned, if the flow value is not zero, the read flow value is recorded to be Q1, and the Q1 is used as a starting point Q 0 Simultaneously recording the number of times of q1 as 1, and continuously reading the next flow value as q2;
s2.2: setting a flow rate change rate threshold value as A, if | q2-q1|/q1 is less than or equal to A, determining that the flow rate is not changed, and simultaneously recording the times of q1 plus 1; if | Q2-Q1|/Q1> A, the flow is considered to be changed, the counting number of Q1 is stored, and the starting point Q is the Q2 again 0 Reading the next flow value q3, if | q3-q2|/q2 is less than or equal to A, determining that the flow is not changed, and simultaneously recording the number of times of q2 plus 1; if | q3-q2|/q2 > A, the flow is considered to be changed, the counting number of q2 is stored, and the like; a is set according to the metering precision of the intelligent gas meter;
s2.3: if the next flow value is zero after the initial point is monitored, the counting number of the initial point is stored, the next flow value is continuously obtained until the flow value which is not zero is obtained and is used as a new initial point Q 0 (ii) a Repeating S2.2;
s2.4: establishing a flow management interval identical to that of the intelligent gas meter end at the cloud end, and obtaining a Q 0 Then, first, Q is observed 0 To which traffic management interval, Q is to be assigned 0 The number of counts is the number of counts in the interval, and every time a Q is obtained later 0 And Q 0 Repeating the step if the number of times of counting is within the same interval, and obtaining Q later 0 If the number of counts is greater than the number of counts obtained previously, the new number of counts replaces the original number of counts, and Q is always maintained in the interval 0 The maximum value of the counting times;
s2.5: when Q in a certain interval 0 After the number of iterations reaches a certain number, or when the obtained Q is 0 When the number reaches the set value, stopping iteration, and finallyMultiplying the next counting number by the safety factor to be used as a counting number threshold a of the flow management interval; not obtaining Q 0 When the traffic control interval of (1) is set, a =0.
The invention has the beneficial effects that:
(1) An intelligent algorithm is established at the intelligent gas meter end, the gas using rule of the user is summarized, the obtained gas using rule is used for managing the gas used by the user, and the gas accident can be effectively avoided;
(2) If the fire is forgotten to be turned off, the counted number exceeds the threshold value a, namely the gas supply can be automatically turned off after a certain time delay, so that the dry burning is avoided, and the good news of the amnesia patient is obtained;
(3) Flow constancy is an important characteristic of leakage, by controlling Q 0 The counting number controls the total gas quantity of the continuous constant flow, and the total gas quantity of the constant flow is controlled within the explosion limit, so that the explosion accidents can be effectively avoided.
Detailed Description
The present invention will be further described with reference to the following examples.
Because the resident user uses gas, the power of gas-using equipment is relatively fixed, the gas-using habit is relatively stable, the gas-using rule of the user is summarized, the obtained gas-using rule 'knowledge' is used for managing the gas-using of the user, and the gas accident can be effectively avoided. The gas consumption law of the user can be summarized in a mode of constructing an intelligent algorithm in the intelligent gas meter, and the gas consumption law can also be generated through a cloud end and then is realized in a mode of sending the gas to an intelligent gas meter end through the cloud end.
The method for carrying out gas safety management by learning gas use habits of users comprises the following specific steps:
s1: installing an intelligent gas meter on a user gas pipeline, and reading a flow value once every a certain time T by the intelligent gas meter;
s2: establishing a plurality of flow management intervals in the measuring range of the intelligent gas meter, wherein the maximum value of each flow management interval is 1.2 times of the full measuring range of the meter;
s3: according to the gas consumption habit of a user, acquiring a threshold value a of the number of flow rate values of each flow rate management interval in a mode that the intelligent gas meter independently learns or sends the learning to the intelligent gas meter after cloud learning;
s4: and monitoring the real-time flow through the intelligent gas meter, judging that the gas using state is abnormal when the frequency of finding that the real-time flow falls into a certain flow management interval is more than a, closing a valve and stopping gas supply.
Example 1
The method comprises the following steps of generating a gas consumption rule of a user by constructing an intelligent algorithm in an intelligent gas meter, specifically:
(1) Reading the flow value once at certain time intervals T (for example, 90 seconds) during the gas consumption period of the user, and discarding the record if the read flow value is zero; if the read flow value is not zero, recording the flow value as a starting point q1, and recording the counting times of q1 as 1; setting the flow value read next time as q2, if | q2-q1|/q1 is less than or equal to 3% (3% is a parameter and can be set according to the metering precision of a meter), determining that the flow is not changed, namely that a user or gas-using equipment does not adjust the gas-using power, and adding one to the number of times counted as q 1; if | q2-q1|/q1>3%, the flow is considered to be changed, namely the user or the gas utilization equipment adjusts the gas utilization power, at the moment, the counting number of q1 is stored, meanwhile, q2 is used as a new starting point, the next flow value is continuously monitored, and counting is restarted according to the rule; in the process of monitoring the flow value, if the flow value is read to be zero, the counting times of the previous flow value are stored, the next starting point is searched, the steps are restarted, and the like;
(2) A plurality of flow management intervals are established for the starting point of the flow value, such as [0.036,0.1 ], [0.1,0.2 ], [0.2,0.3 ], [0.3,0.4 ], [0.4,0.5) … … and the like, and the intervals can be equal or unequal and are established to be 1.2 times of the full scale of the meter. When the counting times of a flow value starting point are obtained, the flow value is checked to which flow management interval the flow value belongs, and the obtained counting times are recorded as the counting times of the flow management interval. Repeating the process every time the counting times of the starting point and the starting point of a flow value are obtained, and if the obtained starting point of the flow value belongs to a certain interval and the counting times of the flow value are greater than the counting times of the starting point stored in the interval, replacing the original counting times with new counting times, namely, always storing the maximum value of the counting times of the starting point;
(3) Stopping the iteration when the number of counting the flow value starting points in a certain interval is iterated to a certain number of times (for example, 100 times, which can be set according to actual conditions), or when the number of the obtained flow value starting points reaches a set value (for example, 300), increasing the number of counting by a certain margin (for example, 10%) by using the stored flow value starting points as the counting threshold of the flow value in the flow management interval, setting the counting threshold as a, and setting the counting threshold as a when no flow starting point occurs in the interval, namely, when the flow is always zero in the learning process, the value a =0;
(4) In the gas utilization process, if the counting times of the starting point falling into the flow management interval are found to be more than a, the valve is closed, and the gas supply is stopped, so that the safety of the gas utilization of the user is ensured.
Example 2
A communication module is added to the intelligent gas meter, the calculation method in embodiment 1 can also be transplanted to a cloud, a counting threshold value is obtained at the cloud, and then the counting threshold value is issued to the intelligent gas meter, specifically:
(1) The intelligent gas meter end reads the flow value once at a certain time T (for example, 90 seconds), stores the read flow value, and uploads 100 flow values to the cloud end;
(2) The cloud data processing method comprises the following steps:
a. if the flow value is zero, discarding the record; the flow value is not zero, the flow value q1 is recorded as a starting point, and the counting frequency of q1 is recorded as 1; setting the next flow value as q2, if | q2-q1|/q1 is less than or equal to 3% (3% is a parameter and can be set according to the metering precision of a meter), determining that the flow is not changed, namely, a user or gas-using equipment does not adjust the gas-using power, and at the moment, q1 is still the starting point and is added by one for the counting number of q 1; if | q2-q1|/q1>3%, the flow is considered to be changed, namely the user or the gas utilization equipment adjusts the gas utilization power, at the moment, the counting number of q1 is stored, meanwhile, q2 is used as a new starting point, the next flow value is continuously monitored, and counting is restarted according to the rule; in the process of monitoring the flow value, if the flow value is read to be zero, the counting times of the previous flow value are stored, the next starting point is searched, the steps are restarted, and the like;
b. a plurality of flow management intervals are established for the starting point of the flow value at the cloud, such as [0.036,0.1 ], [0.1,0.2 ], [0.2,0.3 ], [0.3,0.4 ], [0.4,0.5) … … and the like, and the intervals can be equal or unequal, and are established to be 1.2 times of the full scale of the meter. When the counting times of a flow value starting point are obtained, the interval to which the starting point flow value belongs is firstly checked, and the obtained counting times are recorded as the counting times of the starting point in the interval. Repeating the process every time the counting times of the initial point and the initial point of the flow value are obtained, if the obtained initial point flow value belongs to a certain interval and the counting times of the initial point are greater than the counting times of the initial point stored in the interval, replacing the original counting times with new counting times, namely, always storing the maximum value of the counting times of the initial point of the flow value in the interval to which the flow value belongs;
c. stopping iteration after the counting number of the starting point of a certain flow management interval is iterated to a certain number of times (for example, 100 times, which can be set according to actual conditions), or when the number of the obtained starting points of the flow values reaches a set value (for example, 300 times), and increasing the number of the stored starting points by a certain margin (for example, 10%) to be used as a counting threshold value of the starting point in the interval, and setting the threshold value as a; if the interval of the flow starting point does not exist, namely the flow value is always zero in the learning process, a =0;
d. establishing a flow management interval which is the same as the cloud end for the flow value starting point at the table end, and correspondingly issuing an interval counting time threshold a obtained by the cloud end to the table end as a counting time management threshold of the flow value starting point in the management interval; in the gas using process, if the meter end finds that the counting times of the starting point falling into the interval are more than a, the valve is closed, and the gas supply is stopped, so that the safety of gas use of a user is ensured.
An intelligent algorithm is established at the intelligent gas meter end, the gas using rule of the user is summarized, the obtained gas using rule is used for managing the gas used by the user, and the gas accident can be effectively avoided; if forgetting to shut down the fire, the counted number of times exceeds a threshold value a, namely, the gas supply can be automatically closed after a certain time delay, so that dry burning is avoided, and the method is good news of patients with amnesia; the constant flow is an important characteristic of leakage, the total gas quantity of the continuous constant flow is controlled by controlling the counting number of Q0, and the total gas quantity of the constant flow is controlled within the explosion limit, so that the explosion accident can be effectively avoided.
The gas metering devices used by residents in China mainly have two types: the method is suitable for intelligent gas meters, the membrane gas meters can be upgraded into the intelligent gas meters through intelligent transformation, and the ultrasonic wave meters belong to the intelligent gas meters.
However, the above description is only exemplary of the present invention, and the scope of the present invention should not be limited thereby, and the replacement of the equivalent components or the equivalent changes and modifications made according to the protection scope of the present invention should be covered by the claims of the present invention.

Claims (4)

1. A method for carrying out gas safety management by learning gas use habits of users is characterized by comprising the following specific steps:
s1: installing an intelligent gas meter on a user gas pipeline, and reading a flow value once every a certain time T by the intelligent gas meter;
s2: establishing a plurality of flow management intervals in the measuring range of the intelligent gas meter, wherein the maximum value of each flow management interval is 1.2 times of the full measuring range of the meter;
s3: according to the gas consumption habit of a user, acquiring a threshold value a of the number of flow rate values in each flow rate management interval in a mode that the intelligent gas meter independently learns or sends the learned information to the intelligent gas meter after cloud learning;
s4: and monitoring the real-time flow through the intelligent gas meter, judging that the gas using state is abnormal when the frequency of finding that the real-time flow falls into a certain flow management interval is more than a, closing a valve and stopping gas supply.
2. The method for gas safety management by learning the gas usage habits of the users according to claim 1, wherein the specific steps of obtaining the flow rate value times threshold a of each flow rate management interval by means of autonomous learning of the intelligent gas meter are as follows:
s1.1: reading real-time flow through the intelligent gas meter, if the read flow value is zero, abandoning the record, if the flow value is not zero, recording the read flow value as Q1, and taking Q1 as a starting point Q 0 Simultaneously recording the number of times q1 as 1 and reading the flow value as q2 after the interval time T;
s1.2: setting a flow rate change rate threshold value as A, if | q2-q1|/q1 is less than or equal to A, determining that the flow rate is not changed, and simultaneously recording the times of q1 plus 1; if | Q2-Q1|/Q1> A, the flow is considered to be changed, the counting number of Q1 is stored, and the starting point Q is the Q2 again 0 Reading a flow value q3 after a time interval T, if | q3-q2|/q2 is less than or equal to A, determining that the flow is not changed, and simultaneously recording the number of times of q2 and adding 1; if | q3-q2|/q2 > A, the flow is considered to be changed, the counting number of q2 is stored, and the like; a is set according to the metering precision of the intelligent gas meter;
s1.3: if the flow value after the initial point is monitored to be zero, the counting number of the initial point is stored, the interval time T is continued to obtain the flow value until the flow value which is not zero is obtained and is used as a new initial point Q 0 (ii) a Repeating S1.2;
s1.4: when a Q is obtained 0 Then, Q is observed first 0 Which flow management section belongs to the intelligent gas meter corresponds to Q 0 The number of counts is the number of counts in the interval, and every time a Q is obtained later 0 And Q 0 The step is repeated for the number of times, and if in the same interval, Q is obtained later 0 If the number of counts is greater than the number of counts obtained previously, the new number of counts replaces the original number of counts, and Q is always maintained in the interval 0 The maximum value of the counting times;
s1.5: when Q is in a certain interval 0 After the number of iterations reaches a certain number, or when the obtained Q is 0 When the number reaches a set value, stopping iteration, and multiplying the last counting number by the safety coefficient to be used as a counting number threshold a of the interval; not obtaining Q 0 When the traffic control interval of (1) is set, a =0.
3. The method for performing gas safety management by learning gas usage habits of users according to claim 1, wherein a communication module is installed on the intelligent gas meter, the intelligent gas meter is connected with a cloud terminal through the communication module, the intelligent gas meter reads a flow value once every interval time T, the read flow value is stored, the flow value is uploaded to the cloud terminal after a certain number is stored, the cloud terminal processes data to generate a counting threshold value a, and the counting threshold value a is issued to a meter end.
4. The method for gas safety management through learning of gas usage habits of users according to claim 3, wherein the cloud processes the data to generate a flow value count threshold a for each flow management interval, and the specific steps are as follows:
s2.1: the cloud end sequentially reads flow data uploaded by the intelligent gas meter end, if the flow value is read to be zero, the record is abandoned, if the flow value is not zero, the read flow value is recorded to be Q1, and the Q1 is used as a starting point Q 0 Simultaneously recording the number of times of q1 as 1, and continuously reading the next flow value as q2;
s2.2: setting a flow rate change rate threshold value as A, if | q2-q1|/q1 is less than or equal to A, determining that the flow rate is not changed, and simultaneously recording the number of times of q1 plus 1; if | Q2-Q1|/Q1> A, the flow rate is considered to be changed, the number of times of Q1 is stored, and Q2 is used as a starting point Q again 0 Reading the next flow value q3, if | q3-q2|/q2 is less than or equal to A, determining that the flow is not changed, and simultaneously recording the number of times of q2 plus 1; if | q3-q2|/q2 > A, the flow is considered to be changed, the counting number of q2 is stored, and the like; a is set according to the metering precision of the intelligent gas meter;
s2.3: if the next flow value is zero after the initial point is monitored, the counting number of the initial point is stored, the next flow value is continuously obtained until the flow value which is not zero is obtained and is used as a new initial point Q 0 (ii) a Repeating S2.2;
s2.4: establishing a flow management interval identical to that of the intelligent gas meter end at the cloud end, and obtaining a Q 0 Then, firstObservation of Q 0 To which traffic management interval, Q is to be assigned 0 The number of counts is the number of counts in the interval, and every time a Q is obtained later 0 And Q 0 The step is repeated for the number of times, and if in the same interval, Q is obtained later 0 If the number of counts is greater than the number of counts obtained previously, the new number of counts replaces the original number of counts, and Q is always maintained in the interval 0 The maximum value of the counting times;
s2.5: when Q is in a certain interval 0 After the number of iterations reaches a certain number, or when the obtained Q is 0 When the quantity reaches a set value, stopping iteration, and multiplying the last counting number by the safety coefficient to serve as a counting number threshold a of the flow management interval; not obtaining Q 0 When the traffic control interval of (1) is set, a =0.
CN202210926715.4A 2022-08-03 2022-08-03 Method for carrying out gas safety management by learning gas use habits of users Pending CN115247809A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024108972A1 (en) * 2022-11-25 2024-05-30 上海飞奥燃气设备有限公司 Constant flow detection method based on nb-iot diaphragm gas meter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024108972A1 (en) * 2022-11-25 2024-05-30 上海飞奥燃气设备有限公司 Constant flow detection method based on nb-iot diaphragm gas meter

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