CN111238589B - Intelligent gas meter, system and method capable of monitoring household gas leakage state - Google Patents
Intelligent gas meter, system and method capable of monitoring household gas leakage state Download PDFInfo
- Publication number
- CN111238589B CN111238589B CN202010065698.0A CN202010065698A CN111238589B CN 111238589 B CN111238589 B CN 111238589B CN 202010065698 A CN202010065698 A CN 202010065698A CN 111238589 B CN111238589 B CN 111238589B
- Authority
- CN
- China
- Prior art keywords
- gas
- leakage
- gas flow
- meter
- flow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
-
- 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
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07F—COIN-FREED OR LIKE APPARATUS
- G07F15/00—Coin-freed apparatus with meter-controlled dispensing of liquid, gas or electricity
- G07F15/001—Coin-freed apparatus with meter-controlled dispensing of liquid, gas or electricity for gas
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/12—Alarms for ensuring the safety of persons responsive to undesired emission of substances, e.g. pollution alarms
- G08B21/16—Combustible gas alarms
Landscapes
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- Health & Medical Sciences (AREA)
- Combustion & Propulsion (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention discloses an intelligent gas meter, a system and a method capable of monitoring the leakage state of household gas. The gas meter comprises a base meter for measuring gas volume data, a pulse module, a controller module, a communication module for sending a gas leakage signal, and a valve control module for controlling the introduction and shutoff of gas. The system comprises the gas meter and a remote background. The method comprises the steps of obtaining time intervals among pulse signals, and analyzing flow information of the fuel gas; analyzing the gas leakage state according to the flow information; and controlling the system to execute a corresponding program according to the analysis result. By using the monitoring method based on the system, the cost for monitoring the gas leakage can be reduced, and the emergency response can be more effectively made according to different gas leakage severity degrees, so that the life and property safety of users can be ensured. The invention can be widely applied to the technical field of gas safety.
Description
Technical Field
The invention relates to the technical field of gas safety, in particular to an intelligent gas meter, a system and a method capable of monitoring the leakage state of household gas.
Background
In the modern society, gas has gradually become one of essential life energy sources in people's daily life, and gas pipelines have also been laid in most buildings in each major city. However, the gas brings convenience and rapidness to life of people, certain potential safety hazards also exist, and safety accidents are possibly caused by gas leakage and other situations. Therefore, monitoring the domestic gas leakage state is an extremely important task.
In the existing gas leakage monitoring technology, low-concentration combustible gas in the surrounding environment of household gas equipment of a user is often detected through a gas sensor based on gas safety equipment such as a gas leakage detector, an alarm and the like, and meanwhile, a corresponding shut-off valve is arranged on a gas pipeline to shut off the introduction of gas. However, this embodiment has many disadvantages: a gas leakage detector and a shutoff valve need to be additionally arranged, so that the economic burden of a user is increased undoubtedly; the detection precision of the gas leakage detector depends on the installation position, false alarm and false cut-off are frequently caused, and the detection result is influenced by oil smoke in a kitchen; the shutoff valve on the gas pipeline can cause resistance to gas introduction, and influences the gas use effect of users. In the prior art, no good technical scheme is available for effectively solving the problems.
Disclosure of Invention
The present invention aims to solve at least to some extent one of the technical problems existing in the prior art. Therefore, the embodiment of the invention provides the intelligent gas meter, the system and the method capable of monitoring the household gas leakage state, which can reduce the cost for monitoring gas leakage and effectively make emergency response according to different gas leakage severity degrees, thereby ensuring the life and property safety of users.
The technical scheme adopted by the embodiment of the invention is as follows:
in a first aspect, an embodiment of the present invention provides an intelligent gas meter capable of monitoring a leakage state of a household gas, including:
the base table is used for measuring volume data of introduced fuel gas;
the pulse module is used for outputting a pulse signal when the accumulated value of the volume data reaches a preset target;
the controller module is used for receiving the pulse signals, recording time intervals among a preset number of the pulse signals, judging whether gas leakage occurs according to the time intervals, and outputting gas leakage signals when the gas leakage is judged to occur;
the communication module is used for sending the gas leakage signal;
and the valve control module is used for controlling the on and off of the fuel gas.
In a second aspect, an embodiment of the present invention provides a system capable of monitoring a leakage state of household gas, including:
the intelligent gas meter capable of monitoring the household gas leakage state is used for judging whether gas leakage occurs or not according to the time interval between the pulse signals with the preset number;
and the remote background is used for receiving the gas leakage signal sent by the gas meter and sending corresponding information to a user and/or a maintainer according to the gas leakage signal.
In a third aspect, an embodiment of the present invention provides a method for monitoring a household gas leakage state, including the following steps:
acquiring time intervals among a preset number of pulse signals;
acquiring flow information of the fuel gas according to the time interval;
analyzing the gas leakage state according to the flow information;
and controlling the system to execute an alarm and/or a gas shutoff program according to the analysis result.
Further, the step of analyzing the gas leakage state according to the flow information specifically includes:
grading the gas flow through a pre-established gas leakage grade model to obtain a grading result;
and outputting a corresponding gas leakage signal according to the grading result.
Further, the gas leakage grade model is established through the following steps:
setting a first gas flow threshold value according to the starting flow of the gas meter;
setting a second fuel flow threshold based on a minimum gas flow and/or a user demand value of the gas appliance;
setting a third gas flow threshold value according to the maximum gas flow and/or the user demand value of the gas appliance;
setting a fourth gas flow threshold value according to the nominal maximum flow of the gas meter;
when the gas flow is greater than a first gas flow threshold and less than a second gas flow threshold, scaling a gas leakage level to a micro leakage;
when the gas flow is larger than a second gas flow threshold and smaller than a third gas flow threshold, if the number of the continuous pulse signals is detected to exceed a second preset number and the time intervals among the pulse signals are the same, calibrating the gas leakage grade as the abnormal flow;
when the gas flow is greater than the third gas flow threshold and less than the fourth gas flow threshold, calibrating a gas leakage grade as early warning leakage;
and when the gas flow is greater than the fourth gas flow threshold value, calibrating the gas leakage grade as over-current leakage.
Further, the establishment of the gas leakage grade model further comprises the following steps:
and when the gas flow is larger than the first gas flow threshold and smaller than the second gas flow threshold, grading the micro leakage grade again according to the gas leakage safety risk.
Further, the step of controlling the system to perform an alarm and/or gas shut-off procedure comprises the steps of:
when a controller module of the gas meter outputs a gas micro-leakage signal, a prompt signal is sent to a user and/or a maintainer through a remote background.
Further, the step of controlling the system to perform an alarm and/or gas shut-off procedure comprises the steps of:
when a controller module of the gas meter outputs a gas early warning leakage signal, sending an early warning signal to a user and/or a maintainer through a remote background;
and sending a control signal to the gas meter through a remote background, and controlling the valve control module to execute a gas turn-off action.
Further, the step of controlling the system to perform an alarm and/or gas shut-off procedure comprises the steps of:
sending a gas turn-off request signal to a user through a remote background;
and when the gas turn-off request signal passes or does not receive a feedback signal within a preset time threshold, sending a control signal to the gas meter.
Further, the step of controlling the system to perform an alarm and/or gas shut-off procedure comprises the steps of:
when a controller module of the gas meter outputs a gas overcurrent leakage signal, a control signal is sent to the gas meter through a remote background, and a valve control module is controlled to execute a gas turn-off action;
and sending a gas shutoff notice to a user and/or a maintainer through a remote background.
Advantages and benefits of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention: the embodiment of the invention improves the existing gas meter, so that the gas meter can independently complete the task of monitoring gas leakage, and meanwhile, the system and the method in the embodiment of the invention can reduce the cost of monitoring gas leakage and more effectively make emergency response aiming at different gas leakage severity degrees, thereby ensuring the life and property safety of users.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description is made on the drawings of the embodiments of the present invention or the related technical solutions in the prior art, and it should be understood that the drawings in the following description are only for convenience and clarity of describing some embodiments in the technical solutions of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic block diagram of an embodiment of an intelligent gas meter capable of monitoring a leakage state of household gas according to the present invention;
FIG. 2 is a schematic diagram of an embodiment of a system for monitoring a leakage status of a household gas according to the present invention;
FIG. 3 is a schematic flow chart of an embodiment of a method for monitoring a leakage status of a household gas according to the present invention;
FIG. 4 is a schematic view of a gas leakage level model of an embodiment of a method for monitoring a household gas leakage state according to the present invention;
FIG. 5 is a schematic flow threshold diagram of an embodiment of a method for monitoring a leakage status of a household gas according to the present invention;
FIG. 6 is a schematic view of a micro-leak for monitoring a household gas leak state according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of a method for monitoring a leakage state of a household gas according to an embodiment of the present invention;
fig. 8 is an overcurrent leakage diagram of an embodiment of a method for monitoring a household gas leakage state according to the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention. The step numbers in the following embodiments are provided only for convenience of illustration, the order between the steps is not limited at all, and the execution order of each step in the embodiments can be adapted according to the understanding of those skilled in the art.
Referring to fig. 1, an embodiment of the present invention provides an intelligent gas meter capable of monitoring a leakage state of a household gas, including:
a base table 101 for measuring volume data of introduced gas;
the pulse module 102 is used for outputting a pulse signal when the accumulated value of the volume data reaches a preset target;
the controller module 103 is configured to receive the pulse signals, record time intervals among a preset number of the pulse signals, determine whether gas leakage occurs according to the time intervals, and output a gas leakage signal when it is determined that gas leakage occurs;
the communication module 104 is used for sending the gas leakage signal;
and the valve control module 105 is used for controlling the on and off of the fuel gas.
The embodiment of the invention provides an intelligent gas meter capable of monitoring the leakage state of household gas, which is mainly applied to gas user families. Based on this, in the embodiment of the present invention, the functions of the existing household gas meter are further optimized and expanded, so that the existing household gas meter can automatically complete the task of monitoring the household gas leakage state without depending on an external gas detector, and the specific principle of the embodiment of the present invention is as follows: the base meter 101 of the gas meter can acquire volume data of the gas introduced in the gas meter in real time, for example, the volume of the gas discharged is determined through the action of a bellows film in the gas meter, and the volume corresponds to the reading unit of a gas meter roller counter. The rotation of the roller counter of the base table 101 corresponds to the pulse module 102, for example, the pulse module 102 outputs a pulse every time the roller counter rotates one circle.
The preset target of the pulse output by the pulse module 102 can be set by adopting an integral multiple of a fixed volume V, namely when the accumulated value of the volume data reaches V, 2V, 3V … nV (n is an integer), a pulse signal is output; it is also possible to use a fixed volume V as the predetermined target, and when the integrated value of the volume data reaches V, output a pulse signal and clear the integrated value, it should be understood that the integrated value referred to herein is the integrated value recorded by the pulse module, and not the metering data of the base table. In addition, the number of the output pulse signals should be fixed and uniform, and preferably, may be set to output one pulse signal at a time. Thus, each pulse acquired by the controller module 103 corresponds to the gas inlet volume V.
The controller module 103 may be composed of any one or more processor chips including an MCU single chip, an FPGA, a CPLD, a DSP, an ARM, etc., and peripheral circuits and programs thereof, and a storage medium inside thereof stores a related program for implementing the method for monitoring the domestic gas leakage state in the embodiment of the present invention. The controller module 103 obtains the pulses transmitted by the pulse module 102 in real time, records time intervals among a preset number of pulse signals, and obtains gas flow information in the time period according to the time intervals, that is, the gas flow can be obtained by dividing gas volume data represented by a preset number of pulse signals by the time intervals, where the preset number may be any integer value greater than or equal to 2, and the flow refers to a volume of fluid flowing through an effective cross section of a closed pipeline or an open channel in unit time. The current gas leakage state can be obtained according to the real-time gas flow information, so that corresponding gas leakage signals are output, and different corresponding processing programs are selected to be executed according to different leakage states. Corresponding signals are sent to a user in different forms under different gas leakage states, so that the user can quickly obtain an abnormal state result monitored by the gas meter. The communication module 104 is mainly used for establishing communication connection with a remote background of a gas company and sending a related gas leakage signal with the identity of the gas meter to the remote background, so that the remote background can quickly acquire corresponding abnormal information and locate a specific address. The valve control module 105 can control the access and the cut-off of the gas, the valve control module 105 is generally controlled according to the charging condition in the prior art, and the gas leakage signal given by the controller module 103 controls the valve control module 105 to act in the embodiment of the invention, so that the gas use safety of a user is ensured. According to the embodiment of the invention, related modules in the existing gas meter are improved, so that the gas meter can effectively monitor gas leakage, a gas detector and a shut-off valve are omitted, and the overall cost of equipment is greatly reduced.
Referring to fig. 2, an embodiment of the present invention provides a system capable of monitoring a household gas leakage state, including:
the intelligent gas meter 100 capable of monitoring the household gas leakage state is used for judging whether gas leakage occurs or not according to the time interval between the preset number of pulse signals;
and the remote background 200 is configured to receive the gas leakage signal sent by the gas meter 100, and send corresponding information to a user and/or a maintenance worker according to the gas leakage signal.
In the embodiment of the present invention, a system configured with the gas meter 100 capable of monitoring the household gas leakage state is further provided, and the system includes a plurality of gas meters 100 arranged at the user side and a remote background 200 arranged at a gas company. Each gas meter 100 carries independent identity information for determining the actual geographical location of each gas meter 100. The remote background 200 is configured to receive a relevant gas leakage signal sent by the gas meter 100, and then send corresponding information to a user according to a specific situation of the signal: specifically, when the danger level of gas leakage is not high, only small-scale overhaul or user self-check is needed, and a prompt signal can be sent to the user; when the gas leakage has certain danger and the gas introduction is possibly required to be cut off, a gas cut-off request signal can be sent to a user, and the gas cut-off request signal is cut off by default after the user confirms the gas or after a period of time, so that the normal gas use and the use safety of the user are considered as much as possible; when the danger of gas leakage is extremely high and quick response is required, the introduction of gas can be immediately cut off, and then a gas cut-off notice is sent to a user to inform the user of a relevant dangerous case. In addition, the remote background 200 can also establish communication connection with the mobile terminal 300 of the gas company staff, so as to facilitate the development of the emergency treatment work of overhaul, investigation and accidents. The remote background 200 arranged in the system of the embodiment of the invention can realize the information communication between the user side and the gas center, thereby being convenient for timely informing the user of the specific condition of household gas leakage, being beneficial to the integrated and unified treatment of the gas leakage and effectively reducing the overall operation cost of the system.
Referring to fig. 3, an embodiment of the present invention provides a method for monitoring a household gas leakage state, for monitoring the household gas leakage state according to the system, including the following steps:
s1: acquiring time intervals among a preset number of pulse signals;
s2: acquiring flow information of the fuel gas according to the time interval;
s3: analyzing the gas leakage state according to the flow information;
s4: and controlling the system to execute an alarm and/or a gas shutoff program according to the analysis result.
Further, as a preferred embodiment, the step S2 of analyzing the gas leakage state according to the flow information specifically includes:
s21: grading the gas flow through a pre-established gas leakage grade model to obtain a grading result;
s22: and outputting a corresponding gas leakage signal according to the grading result.
With reference to fig. 4, further as a preferred embodiment, the gas leakage class model is established by:
setting a first gas flow threshold value according to the starting flow of the gas meter;
setting a second fuel flow threshold based on a minimum gas flow and/or a user demand value of the gas appliance;
setting a third gas flow threshold value according to the maximum gas flow and/or the user demand value of the gas appliance;
setting a fourth gas flow threshold value according to the nominal maximum flow of the gas meter;
when the gas flow is greater than a first gas flow threshold and less than a second gas flow threshold, scaling a gas leakage level to a micro leakage;
when the gas flow is larger than a second gas flow threshold and smaller than a third gas flow threshold, if the number of the continuous pulse signals is detected to exceed a second preset number and the time intervals among the pulse signals are the same, calibrating the gas leakage grade as the abnormal flow;
when the gas flow is greater than the third gas flow threshold and less than the fourth gas flow threshold, calibrating a gas leakage grade as early warning leakage;
and when the gas flow is greater than the fourth gas flow threshold value, calibrating the gas leakage grade as over-current leakage.
The step S22 of outputting a corresponding gas leakage signal according to the classification result specifically includes:
s221: when the gas flow is in a micro leakage level, outputting a gas micro leakage signal;
s222: when the gas flow is in the early warning leakage level, outputting a gas early warning leakage signal;
s223: and when the gas flow is in an overcurrent leakage level, outputting a gas overcurrent leakage signal.
Further as a preferred embodiment, the step S3 of controlling the system to execute an alarm and/or gas shutoff procedure includes the following steps:
s311: when a controller module of the gas meter outputs a gas micro-leakage signal, a prompt signal is sent to a user and/or a maintainer through a remote background.
S321: when a controller module of the gas meter outputs a gas early warning leakage signal, sending an early warning signal to a user and/or a maintainer through a remote background;
s322: and sending a control signal to the gas meter through a remote background, and controlling the valve control module to execute a gas turn-off action.
S331: when a controller module of the gas meter outputs a gas overcurrent leakage signal, a control signal is sent to the gas meter through a remote background, and a valve control module is controlled to execute a gas turn-off action;
s332: and sending a gas shutoff notice to a user and/or a maintainer through a remote background.
Further as a preferred embodiment, the method further comprises the following steps:
s323: sending a gas turn-off request signal to a user through a remote background;
s324: and when the gas turn-off request signal passes or does not receive a feedback signal within a preset time threshold, sending a control signal to the gas meter.
Referring to fig. 4 and 5, according to the performance of the gas meter and the gas characteristics of the combustion appliance, the embodiment of the present invention divides the excess gas (i.e., the gas flow rate) of a general residential user in the following cases. Wherein Q is0Representing the starting flow of the gas meter; q1A minimum condition representing a minimum gas flow rate or a user demand value of the user gas appliance; q2Represents a maximum condition of a user gas appliance maximum gas flow rate or a user demand value; q3Representing the nominal maximum flow of the gas meter. Is actually passed throughAnd the gas flow obtained by the gas meter detection is recorded as Q. The user requirement value is a section of gas flow rate interval which can be customized by a user according to actual needs.
When Q is0<Q≤Q1The method comprises the following steps: the gas leakage was rated as micro leakage. The leakage amount of the fuel gas is small at the moment, and the micro leakage grade can be graded again according to the potential safety risk of further evaluation. For example, suppose QpIs Q0And Q1The flow value between the two is determined by referring to the set range of national standard of the alarm concentration of the gas alarm, taking the duration of 24 hours as an example, if the gas flow Q ispThe total gas leakage amount in the next 24 hours can not reach the minimum standard of the alarm concentration of the gas alarm, and the gas flow Q can be considered in consideration of the dilution and dissipation of the gaspAnd the safety is relatively safe and the safety risk is small. When Q is<QpIn the process, the leakage amount of the fuel gas does not cause safety accidents, and only background early warning treatment can be carried out; when Q is>QpIn the process, the leakage amount generates large safety risk within a certain time, and at the moment, an alarm measure can be taken or valve closing treatment can be taken under a certain condition. QpThe set value of (2) is also determined through experiments according to different gas characteristics and application environments. If desired, multiple levels may be graded within the trace leakage interval.
When Q is1<Q≤Q2In general, the flow rate falls within a normal gas flow rate range. However, in this case, there is still a safety risk of gas utilization (for example, when a person leaves and forgets to shut off a fire), so that the occurrence of the above situation can be determined by detecting that the number of the continuous pulse signals exceeds a second preset number, and the time intervals between the pulse signals are the same, wherein the second preset number should be set to a larger value, so as to prevent false alarm in the case of normal gas utilization. When the abnormal flow occurs, measures such as alarming or valve closing (optional) can be taken;
when Q is2<Q≤Q3And meanwhile, the gas leakage grade is determined as early warning leakage. When the situation is detected, certain dangerous factors exist, system early warning is adopted or alarming and/or valve closing is carried out according to the requirements of users and the likeTaking measures;
when Q is3<And when Q is reached, the gas leakage grade is calibrated to be over-current leakage. When the situation is detected, the safety risk is extremely high, and measures such as immediately closing the valve and alarming are taken.
The following describes various gas leakage situations in the embodiment of the method of the present invention in detail with reference to the accompanying drawings.
The first embodiment: in the embodiment of the invention, the gas micro-leakage refers to the condition that the gas flow is lower than the use value in the normal state. In this case, since the acquired gas flow rate is lower than the data in normal use, the normal gas flow rate can be calculated and determined by the calibration load value of the gas appliance itself, or acquired by means of test measurement. Taking the gas flow of the gas appliance in the minimum gas consumption working mode as a second gas flow threshold Q1When the gas flow detected by the gas meter is lower than the second gas flow threshold value Q1When the gas meter is used, it is obvious that the gas is leaked outwards at the moment instead of the reason that the user uses the gas, and the leakage amount is very small, and the leakage reason is probably that the gas pipeline per se is aged, the gas pipeline and the gas instrument are connected with gaps or the gas meter per se has problems in metering.
Because the leakage flow is small, the damage degree is low, and the flow interval Q of the micro leakage grade can be adjusted according to the potential safety risk0-Q1And grading again, and executing different processing programs according to the danger degree.
Referring to FIG. 6, Q is shown0、Q1、Q2、Q3Respectively a first gas flow threshold, a second gas flow threshold, a third gas flow threshold and a fourth gas flow threshold. In the case of a slight gas leakage, the system in the embodiment of the present invention obtains the time intervals between the preset number of pulse signals, specifically, the time intervals between 5 pulses, for example, and finds that the time intervals T between 5 pulses are very long at the time T1-T2, and the gas volume represented by 5 pulses is divided by the time intervals T between 5 pulses to obtain the time intervals T between T1-T2The gas flow Q falls into Q exactly0、Q1Meanwhile, the flow information of the gas is obtained by similarly adopting the analysis method, and a schematic diagram of the change of the gas flow from t1 to t4 can be obtained. At time t1, the gas flow rate increases from zero, but does not reach the normal gas usage level (Q)1-Q2) This is the case of the above-mentioned slight leakage of fuel gas. In this case, the time period t1-t2 lasts first, then at time t2, the gas flow rate Q increases again, reaching the normal gas usage level, indicating that the user has opened the gas appliance for use, and at time t3 the gas flow rate again falls to Q0-Q1The level of (d) indicates that the user has closed the gas appliance, but that the gas is leaking outwardly at a smaller flow rate. Therefore, in the time periods t1-t2 and t3-t4, the controller module 103 in the gas meter outputs a gas micro-leakage signal and executes a corresponding reaction program. This situation indicates that the gas pipeline, gas appliance or gas meter in the user's home is actually out of order, and whether there is a safety risk according to the current leakage (Q can be further compared with the above-mentioned Q)pRelationship determination) to execute different processes, if there is no security risk, the gas company can keep track of and track the leak; if the safety risk exists, after the remote background of the gas company receives a gas micro-leakage signal sent by the communication module 104 in the gas meter, the remote background records and sends a prompt signal to the user and/or the maintenance personnel in time to remind the user to check by oneself or facilitate the maintenance personnel to arrange maintenance work. The embodiment of the invention can enable a gas company and a user to make quick response at the initial stage of gas leakage, thereby effectively reducing the probability of dangerous case occurrence; the bad working conditions of related equipment can be checked to the maximum extent, and further deterioration of gas leakage is avoided; and the metering error of the gas meter can be effectively corrected in time, and the economic loss of a user is reduced.
Second embodiment: in the embodiment of the invention, the gas early warning leakage refers to the situation that the gas flow leaks outwards in a range higher than that in the normal use of the gas due to the fact that the gas is abnormally shut off, the gas pipeline is seriously aged or animals bite the gas pipeline, and the gas leakage amount which lasts for a period of time under the flow possibly causes harm to the personal and property of users.
Different from the first situation of trace leakage of fuel gas, the situation of early warning leakage of fuel gas in this embodiment may have adverse effects on the personal safety of the user, and may also cause safety accidents in a serious situation, so other corresponding emergency measures must be taken to deal with the situation. In the embodiment of the invention, when the gas flow is greater than the third gas flow threshold and less than the fourth gas flow threshold, the grade of gas leakage belongs to the early warning leakage condition.
Referring to FIG. 7 and the first embodiment described above, Q is shown0、Q1、Q2、Q3Respectively a first gas flow threshold, a second gas flow threshold, a third gas flow threshold and a fourth gas flow threshold. For the situation of gas early warning leakage, in the gas flow change schematic diagram recorded by the system in the embodiment of the invention, at time t5, the gas flow Q increases from zero to reach the normal gas consumption level (Q)1-Q2) In this case, the time period t5-t6 continues, which indicates that the user has opened the gas appliance for use, and then at time t6, the gas flow rate Q suddenly rises, falling into Q2-Q3May be due to a gas appliance not being closed well, a failure of the closure, or some breach of the gas conduit. And when gas leaks, the gas flow Q is at the early warning leakage level in a time period from t6 to t7, and at the moment, the controller module 103 in the gas meter outputs a gas early warning leakage signal and executes a corresponding reaction program. Specifically, the communication module 104 in the gas meter sends a gas early warning leakage signal to a remote background of a gas company, the remote background sends a gas turn-off request signal to a mobile terminal of a user after receiving the gas early warning leakage signal, the user requests to turn off the introduction of gas, and the valve control module controls the gas turn-off after receiving confirmation information of the user. Further, the user may not sometimes immediately feed back the gas shutoff request message through the mobile terminalAnd therefore, the gas can pass by default within a period of time after the gas turn-off request signal is sent out, and then the gas turn-off notice of the gas is sent to the user. In addition, an early warning signal can be sent to a user and/or a maintenance worker through a remote background to inform relevant personnel of rapidly developing the treatment work. The early warning signal should be clearly distinguishable from the aforementioned cue signal to highlight the urgency of the leak condition in a more obvious manner.
According to the embodiment of the invention, under the condition that the personal safety of the user is threatened due to gas leakage, the relevant dangerous case of the user can be quickly notified, so that the user can know that the gas appliance at home is not closed well in the first time; after the user self-checks and eliminates the dangerous case, the user can choose not to turn off the gas to ensure the normal gas use of the user, and meanwhile, the implementation means of automatic turn-off can be set when the feedback of the user is not received within a period of time to ensure the personal safety of the user.
The third embodiment: in the embodiment of the invention, the gas overflow leakage refers to the large-scale outward leakage of gas caused by emergencies such as the falling of a gas pipe rubber tube, the disconnection of a gas pipe and a gas appliance wiring port and the like, the situations are often random, the consequences are very serious, and the leaked flow can directly exceed the maximum nominal value of the gas meter. Therefore, in the embodiment of the invention, when the gas flow is greater than the fourth gas flow threshold, the grade of gas leakage belongs to the over-flow leakage condition. In this case, the leakage amount of the gas in a short time is very dangerous to the personal safety of the user, and at this time, if the gas is not immediately treated, a more serious safety accident such as explosion may occur.
Referring to FIG. 8 and the first embodiment described above, Q is shown0、Q1、Q2、Q3Respectively a first gas flow threshold, a second gas flow threshold, a third gas flow threshold and a fourth gas flow threshold. In the schematic diagram of the change of the gas flow recorded by the system in the embodiment of the invention, aiming at the condition of gas overflow and leakage, at the time t8, the gas flow is rapidly increased from zero and directly exceeds the normal useGas level (Q)1-Q2) And also exceeds the maximum nominal value Q of the gas meter3. The time period is indicated to burst serious gas leakage, and the specific reason is probably caused by the falling of the rubber pipe. And in the time period from t8 to t9, the controller module 103 in the gas meter outputs a gas over-current leakage signal, and the valve control module 105 acts to stop the gas from entering. The communication module 104 sends a gas overflow leakage signal to a remote background of a gas company, and after receiving the gas overflow leakage signal, the remote background sends a gas turn-off notice to a mobile terminal of a user and/or a maintainer so as to inform the user of the turn-off reason of the gas and inform the maintainer of the fact that the maintenance work related to the maintenance work is processed. The embodiment of the invention can act to turn off the gas in the first time under the condition of sudden gas leakage, thereby preventing further accident deterioration and ensuring the personal safety of users to the maximum extent.
In the description herein, references to the description of "one embodiment," "another embodiment," or "certain embodiments," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (6)
1. A method for monitoring a leakage state of household gas, comprising the steps of:
acquiring time intervals among pulse signals of preset number output by a pulse module of the gas meter;
acquiring flow information of the fuel gas according to the time interval;
analyzing the gas leakage state according to the flow information;
according to the analysis result, the control system executes an alarm and/or a fuel gas turn-off program; the system comprises the gas meter and a remote background;
the step of analyzing the gas leakage state according to the flow information specifically includes:
grading the gas flow through a pre-established gas leakage grade model to obtain a grading result;
outputting a corresponding gas leakage signal according to the grading result;
the gas leakage grade model is established through the following steps:
setting a first gas flow threshold value according to the starting flow of the gas meter;
setting a second fuel flow threshold based on a minimum gas flow and/or a user demand value of the gas appliance;
setting a third gas flow threshold value according to the maximum gas flow and/or the user demand value of the gas appliance;
setting a fourth gas flow threshold value according to the nominal maximum flow of the gas meter;
when the gas flow is greater than a first gas flow threshold and less than a second gas flow threshold, scaling a gas leakage level to a micro leakage;
when the gas flow is larger than a second gas flow threshold and smaller than a third gas flow threshold, if the number of the continuous pulse signals is detected to exceed a second preset number and the time intervals among the pulse signals are the same, calibrating the gas leakage grade as the abnormal flow;
when the gas flow is greater than the third gas flow threshold and less than the fourth gas flow threshold, calibrating a gas leakage grade as early warning leakage;
and when the gas flow is greater than the fourth gas flow threshold value, calibrating the gas leakage grade as over-current leakage.
2. A method of monitoring a domestic gas leak condition according to claim 1, wherein: the establishment of the gas leakage grade model further comprises the following steps:
and when the gas flow is larger than the first gas flow threshold and smaller than the second gas flow threshold, grading the micro leakage grade again according to the gas leakage safety risk.
3. A method of monitoring a domestic gas leak condition according to claim 2, wherein: the step of controlling the system to perform an alarm and/or gas shut-off procedure, comprising the steps of:
when a controller module of the gas meter outputs a gas micro-leakage signal, a prompt signal is sent to a user and/or a maintainer through a remote background.
4. A method of monitoring a domestic gas leak condition according to claim 2, wherein: the step of controlling the system to perform an alarm and/or gas shut-off procedure, comprising the steps of:
when a controller module of the gas meter outputs a gas early warning leakage signal, sending an early warning signal to a user and/or a maintainer through a remote background;
and sending a control signal to the gas meter through a remote background, and controlling the valve control module to execute a gas turn-off action.
5. The method of claim 4, further comprising the steps of:
sending a gas turn-off request signal to a user through a remote background;
and when the gas turn-off request signal passes or does not receive a feedback signal within a preset time threshold, sending a control signal to the gas meter.
6. A method of monitoring a domestic gas leak condition according to claim 2, wherein: the step of controlling the system to perform an alarm and/or gas shut-off procedure, comprising the steps of:
when a controller module of the gas meter outputs a gas overcurrent leakage signal, a control signal is sent to the gas meter through a remote background, and a valve control module is controlled to execute a gas turn-off action;
and sending a gas shutoff notice to a user and/or a maintainer through a remote background.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010065698.0A CN111238589B (en) | 2020-01-20 | 2020-01-20 | Intelligent gas meter, system and method capable of monitoring household gas leakage state |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010065698.0A CN111238589B (en) | 2020-01-20 | 2020-01-20 | Intelligent gas meter, system and method capable of monitoring household gas leakage state |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111238589A CN111238589A (en) | 2020-06-05 |
| CN111238589B true CN111238589B (en) | 2021-04-06 |
Family
ID=70876381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010065698.0A Active CN111238589B (en) | 2020-01-20 | 2020-01-20 | Intelligent gas meter, system and method capable of monitoring household gas leakage state |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111238589B (en) |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112197176B (en) * | 2020-09-28 | 2022-10-04 | 广州东部发展燃气有限公司 | Gas leakage detection system |
| CN112414699B (en) * | 2020-11-03 | 2023-04-07 | 广州东部发展燃气有限公司 | Gas leakage detection device and method |
| CN112509290A (en) * | 2020-11-27 | 2021-03-16 | 浙江威星智能仪表股份有限公司 | High-sensitivity intelligent gas leakage alarm control system |
| CN112542034B (en) * | 2020-12-04 | 2022-03-25 | 广州燃气集团有限公司 | Method, system and equipment for identifying micro-small flow leakage of intelligent gas meter |
| CN112712677A (en) * | 2020-12-23 | 2021-04-27 | 武汉知沃智能技术有限公司 | Intelligent inspection system and method for urban gas pipe network |
| CN112907907A (en) * | 2021-02-07 | 2021-06-04 | 海宁新奥燃气发展有限公司 | Wireless remote transmission linkage cutting-off method for household gas alarm of Internet of things |
| CN112903211A (en) * | 2021-03-29 | 2021-06-04 | 广州燃气集团有限公司 | Equipment and method for detecting tightness of gas pipeline |
| CN113050522A (en) * | 2021-03-31 | 2021-06-29 | 广州燃气集团有限公司 | Valve state detection method based on safety monitoring function Internet of things intelligent gas meter |
| WO2022205403A1 (en) * | 2021-04-02 | 2022-10-06 | 广州燃气集团有限公司 | Intelligent gas meter, system and method capable of monitoring household gas leakage state |
| CN113075899B (en) * | 2021-04-07 | 2023-06-20 | 广州燃气集团有限公司 | Gas leakage monitoring method based on intelligent gas meter of Internet of things |
| CN113324181B (en) * | 2021-04-13 | 2022-08-30 | 华翔翔能科技股份有限公司 | Intelligent air supply management method and system |
| CN113534705A (en) * | 2021-07-09 | 2021-10-22 | 西安九德创一科技有限公司 | Gas control method, system, equipment and storage medium thereof |
| CN115050169A (en) * | 2022-05-30 | 2022-09-13 | 上海飞奥燃气设备有限公司 | Gas safety monitoring system and method |
| CN115240374A (en) * | 2022-07-18 | 2022-10-25 | 北京市燃气集团有限责任公司 | Indoor gas leakage detection system and method |
| CN115560817A (en) * | 2022-08-12 | 2023-01-03 | 荣成市宇翔实业有限公司 | Control method of gas meter, method for monitoring abnormal gas supply state and gas meter |
| CN115435859A (en) * | 2022-11-04 | 2022-12-06 | 绵阳能创科技有限责任公司 | Control method and device and electronic equipment |
| US20240201661A1 (en) * | 2022-12-14 | 2024-06-20 | Saudi Arabian Oil Company | Pipeline control system |
| CN117058815A (en) * | 2023-10-13 | 2023-11-14 | 成都秦川物联网科技股份有限公司 | Gas flow meter gas flow management method, device and equipment based on Internet of things |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5663335B2 (en) * | 2011-02-09 | 2015-02-04 | パナソニックＩｐマネジメント株式会社 | Shut-off valve device |
| CN104655218A (en) * | 2015-02-03 | 2015-05-27 | 成都秦川科技发展有限公司 | Safety cut-out type intelligent gas meter with self learning function |
| CN206192424U (en) * | 2016-10-31 | 2017-05-24 | 广州新奥燃气有限公司 | Gas system of family |
| CN106527327B (en) * | 2017-01-10 | 2019-08-02 | 清华大学 | A kind of domestic gas safety monitoring method |
| CN106681219B (en) * | 2017-01-13 | 2020-04-24 | 成都中科慧源科技有限公司 | Gas meter fault processing system and method capable of monitoring and responding in time |
| CN109668607B (en) * | 2018-11-21 | 2020-05-29 | 金卡智能集团股份有限公司 | Method for monitoring tiny leakage of gas meter |
-
2020
- 2020-01-20 CN CN202010065698.0A patent/CN111238589B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN111238589A (en) | 2020-06-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111238589B (en) | Intelligent gas meter, system and method capable of monitoring household gas leakage state | |
| WO2022205403A1 (en) | Intelligent gas meter, system and method capable of monitoring household gas leakage state | |
| WO2009107367A1 (en) | Gas shut-off device and alarm-compatible system meter | |
| EP3905263A1 (en) | Nuclear power plant leakage monitoring alarm method and alarm system | |
| JP4706500B2 (en) | Security system | |
| CN112197176B (en) | Gas leakage detection system | |
| AU2021400300A1 (en) | Network edge detection and notification of gas pressure situation | |
| CN113075899A (en) | Gas leakage monitoring system and method based on Internet of things intelligent gas meter | |
| CN107918319A (en) | Household water leakage monitoring and warning system and control method | |
| KR102176143B1 (en) | Boiler safety management device and boiler safety management system including the same | |
| CN212621322U (en) | Gas appliance Internet of things safety management system based on narrow-band Internet of things communication technology | |
| JPH03106376A (en) | Gas-blast circuit breaker | |
| CN114689252A (en) | Water leakage detection method and intelligent water meter | |
| JP5236551B2 (en) | Gas meter, control method thereof and control program | |
| CN114283552A (en) | Combustible gas alarm system and method for driving wireless electromagnetic valve | |
| JPH0961283A (en) | Pipe leakage monitor | |
| JPH0744786A (en) | Gas safety device | |
| JP5522609B2 (en) | Gas shut-off device | |
| JPH06243382A (en) | Safety meter inspection system | |
| JP2004069528A (en) | Gas meter | |
| WO2019004079A1 (en) | Gas meter management system | |
| JP2004333411A (en) | Water leak detection device and method of water supply system | |
| KR102493985B1 (en) | System for alerting and alarming leak of hazardous chemicals | |
| JP5158945B2 (en) | Gas shut-off device | |
| JPH0829289A (en) | Gas leak monitoring apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |