CN109323733B - Gas meter anti-disassembly detection method based on air component detection - Google Patents
Gas meter anti-disassembly detection method based on air component detection Download PDFInfo
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Abstract
The embodiment provides a gas meter anti-dismantling detection method based on air component detection, which belongs to the field of gas meters and comprises the steps of enabling a gas meter which is initially installed at a user to receive and execute an account opening instruction issued by a server, and starting an anti-dismantling mode of the gas meter when a preset condition is triggered; the gas composition in the gas meter is regularly detected by an air detection module arranged in the gas meter; and if the detection result shows that the air content exceeds the threshold value, determining that the gas meter is detached. Through setting the conditions for triggering the anti-dismounting mode, the difficulty of entering the anti-dismounting mode is increased, and the influence of other operations on the final detection result can be reduced; on the other hand, whether the gas meter is disconnected or not is judged by means of a mode of detecting air content, compared with a mode of judging by naked eyes by means of articles such as a lead seal in the prior art, deception caused by modes such as lead seal replacement and the like can be prevented, whether the gas meter is disassembled or not is judged more accurately, and judgment accuracy is improved.
Description
Technical Field
The invention belongs to the field of gas meters, and particularly relates to a gas meter anti-disassembly detection method based on air component detection.
Background
With the technological progress and rapid development of gas chemical engineering, the internet of things has entered the gas metering industry, and gas meters based on the internet of things are gradually becoming mainstream products in the market. The gas meter is used as a tool for charging the use of the gas amount by a user and is also a unique certificate, the accuracy and the reliability of the gas meter are particularly important, and the gas meter is prevented from being disassembled to form a reliable important foundation stone.
The existing method for preventing the disassembly of the gas meter of the Internet of things is defective, when the whole gas meter or a base meter of the gas meter is disassembled, the gas meter cannot give an alarm in time and inform a gas company, loss is avoided in time, and then lead sealing and other disassembly preventing mechanisms can be found only by manual observation. However, remote meter reading of internet of things gas meters which are used in large quantities at present is achieved, the period of looking up and maintaining the gas meters in the home of a user is very long, and therefore the situation that the meters cannot be detached can not be found within a long period of time. Meanwhile, the lead seal is replaceable, and if the lead seal can be purchased in the market, the lead seal is invalid in disassembly prevention. In conclusion, the situation of meter disassembly cannot be found in time by the existing anti-disassembly means.
Disclosure of Invention
In order to overcome the defects and shortcomings in the prior art, the invention provides the gas meter disassembly prevention detection method based on air component detection, which can improve the accuracy of detecting whether the gas meter is disassembled or not by means of air component detection.
In order to achieve the technical purpose, the invention provides a gas meter anti-disassembly detection method based on air component detection, which comprises the following steps:
enabling a gas meter initially installed at a user to communicate with a server, receiving and executing an account opening instruction issued by the server, and starting a disassembly prevention mode of the gas meter when a preset condition is triggered;
after entering the anti-disassembly mode, regularly detecting gas components in the gas meter by means of an air detection module arranged in the gas meter, and performing self-checking on the function of the gas meter;
and if the detection result shows that the air content exceeds the threshold value, determining that the gas meter is detached.
Optionally, the preset conditions include:
the method comprises the following steps that preset conditions of the gas meter and external installation conditions of the gas meter are required to be met simultaneously; wherein,
the preset conditions of the gas meter comprise that the gas meter is configured into a delivery mode;
the gas meter is installed in the gas pipeline, detects that there has been the gas in the gas meter.
Optionally, the gas meter tamper detection method includes:
after the gas meter is configured to be in a factory leaving mode, regularly communicating with a server, and uploading meter information and gas consumption of the gas meter to the server;
and if the server does not receive the information uploaded by the gas meter, dispatching a worker to check the gas meter.
Optionally, the gas meter tamper detection method includes:
and after entering the anti-disassembly mode, if the gas meter is judged to be incapable of working normally after self-checking, triggering the anti-disassembly protection step of the gas meter.
Optionally, the anti-disassembly protection step of the gas meter includes:
the server receives fault information uploaded by the gas meter;
and if the fault information indicates that the valve of the current gas pipeline is not closed, waiting for the gas meter to upload detailed alarm information or arranging workers to go to the gas meter for maintenance.
Optionally, the anti-disassembly protection step of the gas meter includes:
the server collects target gas meters which are not communicated according to the set time;
if the communication time of the target gas meter according to the specified time exceeds the preset number of days, dispatching a worker to perform door-to-door detection on the target gas meter;
if the target gas meter judges that the gas meter is detached and the gas pipeline valve is closed, stopping the user from using the gas;
and if the target gas meter is abnormal due to the valve fault, carrying out maintenance according to fault information stored in the target gas meter.
Optionally, the periodically detecting the gas components in the gas meter includes:
an air detection module is arranged in the gas meter;
and periodically detecting the gas components in the gas meter based on the air detection module.
Optionally, the periodically detecting the gas composition in the gas meter based on the air detection module includes:
sending a data acquisition instruction to a thermal characteristic sensor in the air detection module;
collecting a thermal characteristic value returned by the thermal characteristic sensor, and calculating a thermal characteristic parameter based on the obtained thermal characteristic value;
sending the obtained thermal characteristic parameters to a gas flow processing unit in an air detection module, and obtaining gas ratio parameters returned by the gas flow processing unit at least twice;
and calculating the average value of the gas ratio parameters, and comparing the obtained average value threshold values.
Optionally, the air detection module is installed at an air inlet of the gas meter.
Optionally, the gas meter tamper detection method includes:
and after the gas meter is judged to be detached, triggering the self-alarming operation of the gas meter and sending alarming information to a server.
The technical scheme provided by the invention has the beneficial effects that:
1. the existing Internet of things gas meter is improved, and the anti-dismantling mode of the gas meter is increased. After the anti-disassembly mode is opened, the gas meter periodically detects gas components in the gas meter through the internal components. Because the gas meter is disassembled and then the gas meter inevitably enters air, the gas component detection can judge whether the gas meter is disassembled or not according to the detected air component proportion. Compared with the mode of observing whether lead seal or other anti-dismantling articles are damaged in the prior art, the detection accuracy can be improved, and meanwhile, the detection misjudgment proportion caused by anti-dismantling articles such as replacement lead seal can be reduced.
2. The necessary conditions for starting the anti-disassembly mode comprise self preset conditions and external installation conditions of the gas meter. The former requires that the gas meter must be in a factory leaving mode in order to prevent others from maliciously tampering the electric meter with the anti-disassembly mode opened, and the latter requires that the gas meter must be installed on a gas pipeline, and the gas meter needs to receive an account opening instruction issued by a gas meter manufacturer server and detect that gas exists in the gas pipeline. The various conditions are set for ensuring that the gas meter is not tampered by others after leaving the factory, is installed on a gas pipeline through operation of an installer, and is activated by the authority of a manufacturer to avoid being used in other environments.
3. After the gas meter leaves a factory, the gas meter needs to communicate with a server at regular time to upload information such as meter information and gas consumption. The gas meter monitoring system is convenient for a manufacturer to remotely monitor each gas meter through the acquired information so that the gas meter can be timely processed when a fault exists.
4. After the gas meter enters the anti-disassembly mode, the anti-disassembly protection step can be triggered on the premise of incapable normal work besides the anti-disassembly detection based on air components, so that the safety of the gas meter is ensured.
5. And aiming at the different states of the gas meters, when the gas meters can normally send messages to the server, after the anti-disassembly protection step is triggered, the gas meters are enabled to send fault information to the server. And after receiving the fault information, the server judges the valve switching state of the gas pipeline where the current gas meter is located. And when the valve is not closed, waiting for uploading of further alarm information or directly sending a worker to overhaul.
6. If the gas meter cannot send a message to the server, the server selects the gas meter which is not communicated with the server according to the preset time. And the gas meters which exceed the preset number of days and have no communication are screened out as target gas meters, and the operation of door-to-door detection is directly carried out on the target gas meters.
When the upper door is detected, the target gas meter is subjected to targeted processing according to specific faults of the target gas meter so as to ensure that the target gas meter can be recovered to be normal.
7. The step of regularly detecting the gas components in the gas meter is realized by an air detection module arranged in the gas meter, and whether the gas meter is disassembled or not is detected according to the detection result of the air detection module.
8. The air detection module comprises a thermal property sensor and a gas flow processing unit. The gas ratio parameter is used for obtaining a thermal characteristic parameter capable of reflecting the gas characteristic in the current gas meter, the gas ratio parameter corresponding to the gas component in the current gas meter is obtained according to the obtained thermal characteristic parameter, the proportion of the air in the gas of the current gas meter is judged according to the comparison between the gas ratio parameter and a threshold value, and finally whether the gas meter is disassembled or not is judged according to the air proportion.
9. In order to improve the accuracy of air component detection, the air detection module is specially installed at the air inlet of the gas meter, so that the concentration of air can be improved as much as possible, and the anti-dismantling detection is completed.
10. If the gas meter is judged to have a disassembly behavior according to the air component detection provided in the foregoing, the alarm operation of the gas meter is directly started, including that the gas meter sends alarm information by itself and sends the alarm information to a server.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious 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 to obtain other drawings based on the drawings without creative efforts.
FIG. 1 is a schematic flow chart of a gas meter tamper detection method based on air component detection according to the present invention;
FIG. 2 is a schematic flow chart illustrating the protection steps provided by the present invention when the gas meter can communicate with the server normally;
FIG. 3 is a schematic flow chart of the protection steps provided by the present invention when the gas meter cannot communicate with the server normally;
FIG. 4 is a schematic flow chart illustrating the specific steps of the present invention for periodically detecting the gas composition in a gas meter.
Detailed Description
To make the structure and advantages of the present invention clearer, the structure of the present invention will be further described with reference to the accompanying drawings.
Example one
The invention provides a gas meter anti-disassembly detection method based on air component detection, as shown in figure 1, the gas meter anti-disassembly detection method comprises the following steps:
11. enabling a gas meter initially installed at a user to communicate with a server, receiving and executing an account opening instruction issued by the server, and starting a disassembly prevention mode of the gas meter when a preset condition is triggered;
12. after entering the anti-disassembly mode, regularly detecting gas components in the gas meter by means of an air detection module arranged in the gas meter, and performing self-checking on the function of the gas meter;
13. and if the detection result shows that the air content exceeds the threshold value, determining that the gas meter is detached.
In implementation, the tamper-proof detection method provided in this embodiment is based on detection of gas components in the gas meter, and according to comparison between a result representing an air ratio in a detection result and a threshold, when the result indicates that the air ratio is high, a gas meter detaching behavior exists.
In an actual situation, it is impossible that each gas meter needs to perform air component detection, so that the tamper-proof mode applied to the gas meter is provided in the embodiment, and the detection step based on the air component is executed only when the tamper-proof mode is turned on.
Starting the anti-disassembly mode requires starting preset conditions, wherein the preset conditions comprise:
the method comprises the steps of simultaneously meeting preset conditions of the gas meter and external installation conditions of the gas meter.
(1) The preset conditions of the gas meter comprise that the gas meter is configured into a delivery mode;
(2) the gas table is installed in the gas pipeline, has detected the gas in the gas table.
The more complicated preset conditions including (1) and (2) are the constraint conditions for enhancing the opening of the tamper-proof mode for the gas meter. The condition (1) is suitable for limiting the gas meter opening anti-disassembly mode in other modes except the factory mode. Because the gas meter in the normal use state basically opens the anti-disassembly mode. The condition (2) is used for limiting that the gas meter needing to be opened in the anti-disassembly mode is required to be installed on a gas pipeline, the meter is communicated with the server and is under monitoring management of the server, and ventilation in the meter ensures that the gas meter can be opened in the condition that a user can normally use gas, so that the anti-disassembly mode is prevented from being opened by the gas meter which is installed by others in private under other conditions and is used for other purposes.
After a user installs the gas meter and performs pressure test gas, an account opening application is provided for a gas company, the gas company can issue an account opening instruction to the installed gas meter, the account opening instruction can be executed when the gas meter is communicated with a server, the anti-dismantling function of the gas meter is started, the user does not allow to dismantle the meter from a gas pipeline privately, once the meter is dismantled, air can be rapidly introduced into the gas meter, the gas meter can find out that the gas meter is dismantled by detecting gas components in the gas meter regularly, and the anti-dismantling function can be started.
And after the gas meter is configured into a factory leaving mode, the server is started to communicate with the server at a fixed time every day, meter information and gas consumption of the gas meter are uploaded to the server, and the meter information and the gas consumption of the gas meter on the same day can be timely uploaded to a background. And if the server does not receive the information uploaded by the gas meter, when the meter is abnormal or is not uploaded, the staff checks the gas meter. The reason why the instrument is abnormal or not uploaded needs to be checked, the problems of the gas meter are timely found and processed, and losses of users and gas companies are avoided.
Optionally, the gas meter tamper detection method includes:
and after the gas meter is judged to be detached, triggering the self-alarming operation of the gas meter and sending alarming information to a server.
In the implementation, close the gas table valve to report to the police to the user through the liquid crystal and upload alarm information for the server through wireless communication module, after the server received alarm information, can discover that the gas table is pulled down by the user, send the staff to look over, report to the police after the solution problem and remove, the user could open the valve this moment and normally use gas. If the worker detaches, the detachment prevention function is closed firstly, and the worker is opened after the installation is finished.
The embodiment provides a gas meter anti-dismantling detection method based on air component detection, which comprises the steps of enabling a gas meter which is installed for the first time at a user to communicate with a server, receiving and executing an account opening instruction issued by the server, and starting an anti-dismantling mode of the gas meter when a preset condition is triggered; after entering the anti-disassembly mode, regularly detecting gas components in the gas meter by means of an air detection module arranged in the gas meter, and performing self-checking on the function of the gas meter; and if the detection result shows that the air content exceeds the threshold value, determining that the gas meter is detached. . Through setting the conditions for triggering the anti-dismounting mode, the difficulty of entering the anti-dismounting mode is increased, and the influence of other operations on the final detection result can be reduced; on the other hand, whether the gas meter is disconnected or not is judged by means of a mode of detecting air content, compared with a mode of judging by naked eyes by means of articles such as a lead seal in the prior art, deception caused by modes such as lead seal replacement and the like can be prevented, whether the gas meter is disassembled or not is judged more accurately, and judgment accuracy is improved.
Example two
Different from the first embodiment, the gas meter anti-disassembly detection method based on air component detection provided by the present embodiment includes a protection step of triggering the gas meter if the gas meter is determined to be faulty after self-detection after entering the anti-disassembly mode.
After the anti-disassembly mode is started, the protection steps of the embodiment are described in two situations according to different states of the gas meter.
(1) As shown in fig. 2, when the gas meter can communicate with the server normally.
21. The server receives fault information uploaded by the gas meter;
22. and if the fault information indicates that the valve of the current gas pipeline is not closed, waiting for the gas meter to upload detailed alarm information or arranging workers to go to the gas meter for maintenance.
In implementation, if the communication between the gas meter and the server is normal, when the gas meter is abnormal or cannot work normally due to manual disassembly and damage, fault information is actively sent to the server. So that the server performs targeted processing according to specific content contained in the received fault information.
If contain in the fault information and lead to when the valve of gas pipeline fails to close because of the trouble, need wait for the gas table to upload detailed alarm information or arrange that the worker goes to gas table department and overhaul, prevent to lead to the fact further damage because of user or other people privately dismantle the gas table.
(2) As shown in fig. 3, when the gas meter cannot normally communicate with the server.
31. The server collects target gas meters which are not communicated according to the set time;
32. if the communication time of the target gas meter according to the specified time exceeds the preset number of days, dispatching a worker to perform door-to-door detection on the target gas meter;
33. if the target gas meter judges that the gas meter is detached and the gas pipeline valve is closed, stopping the user from using the gas;
34. and if the target gas meter is abnormal due to the valve fault, carrying out maintenance according to fault information stored in the target gas meter.
In implementation, if the gas meter cannot communicate with the server due to a fault of the communication module or other faults, the server collects the gas meters which are not communicated with the server according to the specified time, and uses the gas meters as target gas meters which may have faults. And then, further screening out the target gas meters that the normal communication with the server cannot be carried out when the preset number of days is exceeded, and dispatching a worker to carry out door-to-door inspection on the target gas meters. The gas company can look up the user information through the table number and check the reason that the user information cannot be uploaded.
The protection step provided by the embodiment adds the functions of detecting and processing abnormity, and when modules such as a gas meter battery, a metering module, a GPRS module and the like work abnormally, abnormity processing and protection can be performed, so that the normal work of the gas meter is ensured, and the accuracy and the reliability of the gas meter are improved. Different states of the gas meter are respectively processed, so that the gas meter can be more comprehensively protected, and more serious consequences caused by untimely maintenance can be prevented.
EXAMPLE III
Unlike the previous embodiments, this embodiment proposes specific steps for periodically detecting the gas components in the gas meter, including
41. An air detection module is arranged in the gas meter;
42. and periodically detecting the gas components in the gas meter based on the air detection module.
In this embodiment, a Sensirion thermal gas meter module SGM7006 is used, and a gas flow sensor and a thermal property sensor in the module are used. As shown in fig. 4, the specific contents of the periodic detection described in the specific step 42 include:
421. sending a data acquisition instruction to a thermal characteristic sensor in the air detection module;
422. collecting a thermal characteristic value returned by the thermal characteristic sensor, and calculating a thermal characteristic parameter based on the obtained thermal characteristic value;
423. sending the obtained thermal characteristic parameters to a gas flow processing unit in an air detection module, and obtaining gas ratio parameters returned by the gas flow processing unit at least twice;
424. and calculating the average value of the gas ratio parameters, and comparing the obtained average value threshold values.
In implementation, firstly, a control chip in the air detection module sends a data acquisition command to the thermal characteristic sensor through an IIC bus, a thermal characteristic parameter TP is calculated according to a thermal characteristic value TCV returned by the thermal characteristic sensor, then the control chip sends the calculated thermal characteristic parameter to the gas flow processing unit to obtain a gas ratio parameter Ki acquired and returned for multiple times, and then the formula is used for acquiring the gas ratio parameter Ki returned by multiple times
And calculating an average gas ratio parameter k, so that the control chip determines the gas composition by judging the size of the k value.
For example, the typical k value of air is 999, natural gas is 80 to 888, when the collected k value is higher than 88, the gas passing through the air detection module is considered to contain air, and the higher the difference value is, the higher the air ratio in the gas meter is.
Furthermore, in order to obtain the air proportion as high as possible and improve the accuracy of the air component detection result, the air detection module is installed at the air inlet of the gas meter, so that the situation that the actually calculated result is low due to air escape and misjudgment are caused is prevented. Place thermal property sensor and flow sensor simultaneously in the empty gas detection module, need not change alone the gas table structure, can guarantee again simultaneously that the gas table is pulled down, the air can be detected through the module rapidly, and the accuracy is higher, and detection speed is faster.
The method for periodically detecting the gas components in the gas meter is used for giving an alarm when a user does not normally use the gas meter for metering, and can prevent additional loss of a gas company. Compared with the mode of naked eyes detection in the prior art, the method can greatly improve the detection accuracy.
The sequence numbers in the above embodiments are merely for description, and do not represent the sequence of the assembly or the use of the components.
The above description is only exemplary of the present invention and should not be taken as limiting the invention, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The gas meter anti-disassembly detection method based on air component detection is characterized by comprising the following steps:
enabling a gas meter initially installed at a user to communicate with a server, receiving and executing an account opening instruction issued by the server, and starting a disassembly prevention mode of the gas meter when a preset condition is triggered;
after entering the anti-disassembly mode, regularly detecting gas components in the gas meter by means of an air detection module arranged in the gas meter, and performing self-checking on the function of the gas meter;
if the detection result shows that the air content exceeds the threshold value, the gas meter is judged to be disassembled;
the preset conditions comprise:
the method comprises the following steps that preset conditions of the gas meter and external installation conditions of the gas meter are required to be met simultaneously; wherein,
the preset conditions of the gas meter comprise that the gas meter is configured into a delivery mode;
the external installation condition of the gas meter comprises that the gas meter is installed in a gas pipeline, and the gas meter detects that gas exists in the gas meter;
the periodic detection of the gas components in the gas meter comprises the following steps:
an air detection module is arranged in the gas meter;
the gas composition in the gas meter is periodically detected based on the air detection module;
wherein, the gas composition based on the empty gas detection module carries out periodic detection to the gas table, includes:
sending a data acquisition instruction to a thermal characteristic sensor in the air detection module;
collecting a thermal characteristic value returned by the thermal characteristic sensor, and calculating a thermal characteristic parameter based on the obtained thermal characteristic value;
sending the obtained thermal characteristic parameters to a gas flow processing unit in an air detection module, and obtaining gas ratio parameters returned by the gas flow processing unit at least twice;
and calculating the average value of the gas ratio parameters, and comparing the obtained average value threshold values.
2. The gas meter disassembly prevention detection method based on air component detection as claimed in claim 1, wherein the gas meter disassembly prevention detection method comprises:
after the gas meter is configured to be in a factory leaving mode, regularly communicating with a server, and uploading meter information and gas consumption of the gas meter to the server;
and if the server does not receive the information uploaded by the gas meter, dispatching a worker to check the gas meter.
3. The gas meter disassembly prevention detection method based on air component detection as claimed in claim 1, wherein the gas meter disassembly prevention detection method comprises:
and after entering the anti-disassembly mode, if the gas meter is judged to be incapable of working normally after self-checking, triggering the anti-disassembly protection step of the gas meter.
4. The gas meter disassembly prevention detection method based on air component detection as claimed in claim 3, wherein the gas meter disassembly prevention protection step comprises:
the server receives fault information uploaded by the gas meter;
and if the fault information indicates that the valve of the current gas pipeline is not closed, waiting for the gas meter to upload detailed alarm information or arranging workers to go to the gas meter for maintenance.
5. The gas meter disassembly prevention detection method based on air component detection as claimed in claim 3, wherein the gas meter disassembly prevention protection step comprises:
the server collects target gas meters which are not communicated according to the set time;
if the communication time of the target gas meter according to the specified time exceeds the preset number of days, dispatching a worker to perform door-to-door detection on the target gas meter;
if the target gas meter judges that the gas meter is detached and the gas pipeline valve is closed, stopping the user from using the gas;
and if the target gas meter is abnormal due to the valve fault, carrying out maintenance according to fault information stored in the target gas meter.
6. The gas meter disassembly prevention detection method based on air component detection as recited in claim 1, wherein the air detection module is installed at an air inlet of the gas meter.
7. The gas meter disassembly prevention detection method based on air component detection as claimed in any one of claims 1 to 6, wherein the gas meter disassembly prevention detection method comprises:
and after the gas meter is judged to be detached, triggering the self-alarming operation of the gas meter and sending alarming information to a server.
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