Fuel gas monitoring system and method

Abstract

The invention provides a fuel gas monitoring system, which comprises a pressure detection module and a remote monitoring platform, and is characterized in that the pressure detection module comprises at least two absolute pressure sensing units arranged in each to-be-detected fuel gas pipeline so as to monitor absolute pipeline pressure data of each to-be-detected fuel gas pipeline; the remote monitoring platform receives absolute pipeline pressure data detected by each absolute pressure sensing unit; the remote monitoring platform further analyzes the absolute pipeline pressure data detected by the absolute pressure sensing units in the same group according to a preset rule, a pipeline pressure reference value is set, and when the absolute pipeline pressure data detected by any absolute pressure sensing unit is lower than the pipeline pressure reference value, the absolute pipeline pressure data detected by any absolute pressure sensing unit is not lower than the pipeline pressure reference value. And if the deviation between the absolute pipeline pressure data and the pipeline pressure reference value exceeds a preset pressure threshold value, the remote monitoring platform judges that the gas pipeline corresponding to the absolute pressure sensing unit has a leakage risk. Through the arrangement, the fuel gas leakage detection cost is reduced, and meanwhile the detection accuracy is improved.

Description

Technical Field

[0001] The present application relates to the technical field of gas equipment, and in particular to a gas monitoring system and method. Background Art

[0002] With the popularization of gas applications, gas has entered ordinary households as the main fuel for heating and cooking. People sometimes forget to close the valve at the outlet of the gas pipeline after using gas or cause gas leakage due to the aging of the pipeline itself. If the gas leakage cannot be discovered and resolved in time, it will threaten people's lives and property safety and cause irreparable losses. In daily life, smart gas meters are usually used to detect the relative pressure of the pipeline to determine whether the gas is leaking. Specifically, the relative pressure of the pipeline is obtained by installing a differential pressure sensor on the shell of the smart gas meter or installing an absolute pressure sensor inside and outside the gas meter to obtain the pressure in the pipeline and the ambient atmospheric pressure respectively, thereby obtaining the difference between the pressure in the pipeline and the ambient atmospheric pressure, that is, obtaining the relative pressure of the pipeline. There are the following problems in using smart gas meters to detect the relative pressure of the pipeline to determine whether the gas is leaking: First, installing a differential pressure sensor on the shell of the smart gas meter has extremely high requirements for the production process of the sensor and the gas meter, and it is difficult to achieve. Second, when using two absolute pressure sensors inside and outside the meter, the cost of the two sensors is relatively high, and the errors caused by the two sensors are greater. Third, because the ambient atmospheric pressure changes dynamically and the amplitude of change is large, the accuracy of the detected pipeline relative pressure is not ideal, resulting in underreporting or false alarms of the gas meter.

[0003] Therefore, it is necessary to provide a technical solution to solve the problems of high cost of gas leakage detection and unsatisfactory detection accuracy in the related art. Summary of the invention

[0004] The object of the present invention is to provide a gas monitoring system and method, which can reduce the cost of detecting gas leaks and improve the accuracy of detection.

[0005] To achieve the above object, the present invention adopts the following technical solution:

[0006] A gas monitoring system comprises:

[0007] The pressure detection module includes at least two absolute pressure sensing units, each of which is arranged in each gas pipeline to be tested to monitor the absolute pipeline pressure data of each gas pipeline to be tested. The remote monitoring platform is connected to the pressure detection module for communication and receives the absolute pipeline pressure data detected by each absolute pressure sensing unit. The remote monitoring platform also groups each absolute pressure sensing unit according to preset rules. The remote monitoring platform analyzes the absolute pipeline pressure data detected by each absolute pressure sensing unit in the same group and sets a pipeline pressure reference value. When the absolute pipeline pressure data detected by any absolute pressure sensing unit is lower than the pipeline pressure reference value, and the deviation between the absolute pipeline pressure data and the pipeline pressure reference value exceeds the preset pressure threshold, the remote monitoring platform determines that the gas pipeline corresponding to the absolute pressure sensing unit has a leakage risk.

[0008] Furthermore, the remote monitoring platform stores the distribution information of the pipeline network pressure regulators, and the preset rules include grouping the absolute pressure sensing units according to the distribution information of the pipeline network pressure regulators, and classifying the absolute pressure sensing units arranged in different branch gas pipelines under the same pressure regulator into the same group.

[0009] Furthermore, the remote monitoring platform performs average processing on the absolute pipeline pressure data detected by each absolute pressure sensing unit in the same group to obtain a pipeline pressure reference value.

[0010] Furthermore, the remote monitoring platform is also used to compare the pipeline pressure reference values ​​of different groups. The pressure regulators corresponding to the groups used for comparison belong to the same pressure regulation area, and the pressure regulation area is divided by the remote monitoring platform according to the distribution information of the pipeline network pressure regulators. When the deviation between the pipeline pressure reference value of any group and the regional pressure regulation reference value is greater than the preset pressure regulation threshold, the remote monitoring platform determines that the pressure regulator corresponding to the group is abnormal, wherein the regional pressure regulation reference value is set according to the pipeline pressure reference value of each group used for comparison.

[0011] Furthermore, the remote monitoring platform averages the pipeline pressure reference values ​​of each group used for comparison to obtain the regional pressure regulation reference value.

[0012] Furthermore, an absolute pressure sensing unit is arranged in the gas meter, and the absolute pressure sensing unit is communicatively connected with the remote monitoring platform based on a communication unit of the gas meter.

[0013] Furthermore, the gas meter is used to detect the flow of the gas pipeline to be tested, and judge the gas usage status based on the detected flow data. When the gas meter determines that the user is not using gas, the absolute pipeline pressure data detected by the absolute pressure sensing unit is valid, and the absolute pressure sensing unit uploads the detected valid absolute pipeline pressure data to the remote monitoring platform.

[0014] Furthermore, the gas meter detects the flow of the gas pipeline to be tested. When the flow of the gas pipeline to be tested is lower than a preset flow threshold, the gas meter determines that the user has not used gas.

[0015] Furthermore, the remote monitoring platform uses a timestamp to mark the generation time of each received absolute pipeline pressure data. When the remote monitoring platform analyzes the absolute pipeline pressure data detected by each absolute pressure sensing unit in the same group, the deviation between the generation time of each absolute pipeline pressure data being analyzed is less than a preset time threshold.

[0016] Furthermore, a gas monitoring method comprises the following steps:

[0017] Monitor the absolute pipeline pressure data of each gas pipeline to be tested;

[0018] According to preset rules, each absolute pipeline pressure data is grouped;

[0019] Analyze each absolute pipeline pressure data in the same group and set the pipeline pressure reference value. When any absolute pipeline pressure data is lower than the pipeline pressure reference value and the deviation between the absolute pipeline pressure data and the pipeline pressure reference value exceeds the preset pressure threshold, it is judged that the gas pipeline corresponding to the absolute pipeline pressure data has a leakage risk.

[0020] In the gas monitoring system of the present application, only one absolute pressure sensing unit needs to be arranged in the gas pipeline to be tested to judge whether the gas pipeline to be tested is leaking, which reduces the cost of the gas monitoring system and also avoids the error accumulation caused by the use of multiple absolute pressure sensing units in the gas pipeline to be tested. In addition, the gas monitoring system of the present application makes judgments based on the absolute pipeline pressure data of each gas pipeline, which is closer to reality and has high accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of the gas monitoring system of this application.

[0022] Figure 2 This is a flowchart of the gas monitoring system of the present application for determining gas pipeline leakage.

[0023] Figure 3 This is the workflow diagram for the gas monitoring system to determine pressure regulator abnormalities.

[0024] Figure 4 This is a schematic diagram of the gas monitoring system monitoring area requested by this application.

[0025] Figure 5 A flowchart of the gas monitoring system of the present application for obtaining a pipeline pressure reference value.

[0026] Figure 6 This is a flow chart of the gas monitoring method of the present application. DETAILED DESCRIPTION

[0027] The present application will be described in detail below in conjunction with the specific implementation modes shown in the accompanying drawings, but these implementation modes do not limit the present application. Structural, methodological, or functional changes made by ordinary technicians in the field based on these implementation modes are included in the protection scope of the present application.

[0028] like Figure 1 As shown, a gas monitoring system 100 provided by an embodiment of the present application includes: a pressure detection module 11 and a remote monitoring platform 12. The pressure detection module 11 includes at least two absolute pressure sensing units 111, each of which is arranged in each gas pipeline to be tested to monitor the absolute pipeline pressure data of each gas pipeline to be tested. The remote monitoring platform 12 is connected to the pressure detection module 11 for communication, receives the absolute pipeline pressure data detected by each absolute pressure sensing unit 111, and groups each absolute pressure sensing unit 111 according to a preset rule. The remote monitoring platform 12 analyzes the absolute pipeline pressure data detected by each absolute pressure sensing unit 111 in the same group, sets a pipeline pressure reference value, and when the absolute pipeline pressure data detected by any absolute pressure sensing unit 111 is lower than the pipeline pressure reference value, and the deviation between the absolute pipeline pressure data and the pipeline pressure reference value exceeds the preset pressure threshold, the remote monitoring platform 12 determines that the gas pipeline corresponding to the absolute pressure sensing unit 111 has a leakage risk. The preset pressure threshold may be set according to actual needs, for example, the preset pressure threshold may be set based on experience.

[0029] like Figure 2 Specifically, the process of the gas monitoring system 100 of the present application for determining whether there is a leak in the gas pipeline is as follows:

[0030] Step S101: each absolute pressure sensing unit 111 monitors the absolute pipeline pressure data of each gas pipeline to be tested;

[0031] Step S102: the remote monitoring platform 12 receives the absolute pipeline pressure data of each pipeline monitored by each absolute pressure sensing unit 111;

[0032] Step S103: the remote monitoring platform 12 groups the absolute pressure sensing units 111 according to a preset rule;

[0033] Step S104: analyzing the absolute pipeline pressure data of each pipeline monitored by each absolute pressure sensing unit 111 in the same group, and setting a pipeline pressure reference value;

[0034] Step S105: the detected absolute pipeline pressure data is lower than the pipeline pressure reference value, and a deviation value between the absolute pipeline pressure value of the gas pipeline to be tested and the pipeline pressure reference value is obtained;

[0035] Step S106: If the obtained deviation value is greater than the preset pressure threshold, execute step S107, otherwise execute step S108;

[0036] Step S107: determining whether there is leakage in the gas pipeline;

[0037] Step S108: Determine whether there is any leakage in the gas pipeline.

[0038] According to the above description, in the gas monitoring system 100 provided in the embodiment of the present application, the remote monitoring platform 12 groups the absolute pipeline pressure data detected when there is no leakage according to the preset rules, sets the pipeline pressure reference value according to the absolute pipeline pressure data in the same group, and judges that the pipeline is leaking when the absolute pipeline pressure data of any pipeline is lower than the pipeline pressure reference value, and the deviation between the absolute pipeline pressure data and the pipeline pressure reference value exceeds the preset pressure threshold. Through the above settings, the pipeline pressure reference value is set based on multiple absolute pipeline pressure data in the same group, so that the influence of the pressure regulator on the pipeline pressure can be eliminated, and then when judging whether there is a leak, it is only necessary to obtain the absolute pipeline pressure data of each pipeline (that is, each gas pipeline to be tested only needs to arrange a single absolute pressure sensing unit 111, and there is no need to install another absolute pressure sensing unit 111 outside the pipeline), which reduces the cost of the gas monitoring system 100. At the same time, it also avoids the error accumulation caused by the use of multiple absolute pressure sensing units 111 in the gas pipeline, and improves the accuracy of the gas monitoring system 100 in judging whether there is a risk of leakage in the gas pipeline.

[0039] In addition, since the gas monitoring system 100 of the present application makes judgments based on the absolute pipeline pressure data of each pipeline, the judgment is closer to reality and has high accuracy. At the same time, by setting the preset pressure threshold, the sensitivity of the gas monitoring system 100 can be adjusted. When the preset pressure threshold is set to a small value, a slight decrease in the absolute pipeline pressure data to be measured will cause the deviation between the absolute pipeline pressure data to be measured and the pipeline pressure reference value to be greater than the preset pressure threshold, and the gas monitoring system 100 will judge that the gas pipeline is leaking. Therefore, in the case of a minor leak, there is no need to wait for the absolute pipeline pressure data to be significantly lower than the normal range before making a judgment, which has better timeliness and accuracy.

[0040] According to the above description, the gas monitoring system 100 provided in the embodiment of the present application cooperates with the pressure detection module 11 and the remote monitoring platform 12 to make gas leakage judgments based on the absolute pipeline pressure data of each pipeline, thereby reducing the cost of detecting gas leakage and improving the accuracy of detection.

[0041] As an optional implementation method, the remote monitoring platform 12 stores the distribution information of the pipeline network pressure regulators, and the preset rules include grouping the absolute pressure sensing units 111 according to the distribution information of the pipeline network pressure regulators, and classifying the absolute pressure sensing units 111 arranged in different branch gas pipelines under the same pressure regulator into the same group.

[0042] Specifically, the pipeline pressure of the branch gas pipeline under the same pressure regulator is affected by the pressure regulator. Therefore, when analyzing whether a gas pipeline is leaking based on the absolute pipeline pressure data, the pipeline pressure data of other branch gas pipelines under the same pressure regulator can provide a certain reference basis for analyzing whether the gas pipeline is leaking. In the embodiment of the present application, the absolute pressure sensing units 111 arranged in different branch gas pipelines under the same pressure regulator are classified into the same group, so that the pipeline pressure reference value set based on the absolute pipeline pressure data under the same group is more referenced for judging whether each branch gas pipeline under the pressure regulator is leaking, thereby improving the accuracy of the gas monitoring system 100 detection.

[0043] As an optional implementation method, the remote monitoring platform 12 performs mean processing on the absolute pipeline pressure data detected by each absolute pressure sensing unit 111 in the same group to obtain a pipeline pressure reference value, so that the deviation value between the absolute pipeline pressure value of the pipeline to be tested and the pipeline pressure reference value is more accurate, which is beneficial to the accuracy of the remote monitoring platform 12 in judging whether there is a leakage risk in the gas pipeline by the above-mentioned deviation value being greater than a preset pressure threshold, thereby improving the detection accuracy of the gas monitoring system 100.

[0044] As an optional implementation method, the absolute pipeline pressure data detected by each absolute pressure sensing unit 111 in the same group can be preprocessed. For example, when setting the pipeline pressure reference value, the absolute pipeline pressure value that is significantly lower than that of other gas pipelines in the same group is first eliminated to ensure the rationality of the setting of the pipeline pressure reference value.

[0045] As an optional implementation, the remote monitoring platform 12 is also used to compare the pipeline pressure reference values ​​of different groups. The pressure regulators corresponding to the groups used for comparison belong to the same pressure regulation area, and the pressure regulation area is divided by the remote monitoring platform 12 according to the distribution information of the pipeline network pressure regulators. When the deviation between the pipeline pressure reference value of any group and the regional pressure regulation reference value is greater than the preset pressure regulation threshold, the remote monitoring platform 12 determines that the pressure regulator corresponding to the group is abnormal, wherein the regional pressure regulation reference value is set according to the pipeline pressure reference value of each group used for comparison, and the preset pressure regulation threshold is the difference between the pipeline pressure reference value when the pressure regulator is normal and the pipeline pressure reference value when the pressure regulator is abnormal.

[0046] like Figure 3As shown, specifically, the process of the gas monitoring system 100 of the present application to determine whether there is an abnormality in the pressure regulator is as follows:

[0047] Step S201: the remote monitoring platform 12 receives the absolute pipeline pressure data of each pipeline monitored by each absolute pressure sensing unit 111;

[0048] Step S202: the remote monitoring platform 12 groups different voltage regulators in the same voltage regulation area;

[0049] Step S203: analyzing the absolute pipeline pressure data of each pipeline monitored by each absolute pressure sensing unit 111 under the same pressure regulator, and setting a pipeline pressure reference value;

[0050] Step S204: repeating step 203 to obtain pipeline pressure reference values ​​under different pressure regulators;

[0051] Step S205: obtaining a regional pressure regulation reference value according to the pipeline pressure reference values ​​under different pressure regulators;

[0052] Step S206: obtaining a deviation value between a pipeline pressure reference value under the pressure regulator to be tested and a regional pressure regulation reference value;

[0053] Step S207: If the obtained deviation value is greater than the preset voltage regulation threshold, execute step S208, otherwise, execute step S209;

[0054] Step S208: determining whether the voltage regulator is abnormal;

[0055] Step S209: determine whether the voltage regulator is normal.

[0056] According to the above description, in the embodiment of the present application, when judging whether the pressure regulator is abnormal, the pipeline pressure reference value is used as the pressure regulation standard for measuring the corresponding pressure regulator, and the pipeline pressure reference values ​​of different pressure regulators arranged in the same area are compared, so that the pressure regulator with abnormality in the area can be found. In this way, the gas company can grasp the status of the pressure regulator without adding communication equipment to the pressure regulator, so that the gas company can arrange maintenance immediately, improving the user experience.

[0057] As an optional implementation method, the remote monitoring platform 12 performs average processing on the pipeline pressure reference values ​​of each group used for comparison to obtain the regional pressure regulation reference value.

[0058] In order to further illustrate the gas monitoring system 100 provided in the embodiment of the present application, the following is an explanation in combination with a specific scenario. Figure 4As shown, it exemplarily shows the monitoring scenario of the gas monitoring system 100 of the present application. In the embodiment of the present application, taking the same community, a total of three units, and four households in each unit as an example, the regulator is arranged in the gas pipeline of each unit to adjust the gas pressure entering the unit, and the absolute pressure sensing unit 111 is arranged in the gas pipeline of each household to obtain the absolute pipeline pressure data of each household. The process of gas pipeline detection by the gas monitoring system 100 of the present application based on the above situation is as follows: First, the gas monitoring system 100 sets the pipeline pressure reference value. Specifically, the remote monitoring platform 12 receives the absolute pipeline pressure data of each household, and groups them according to different units, and takes the absolute pipeline pressure data of each household in the same unit as a group, and then performs average processing on the absolute pipeline pressure data in the same group to obtain the pipeline pressure reference value of the unit, a total of three units of pipeline pressure reference values. Secondly, the gas monitoring system 100 determines whether the user pipeline is leaking. Taking a unit as an example, when the deviation between the absolute pipeline pressure data of any of the four monitored households and the pipeline pressure reference value of the unit exceeds the preset pressure threshold, the remote monitoring platform 12 determines that the household's gas pipeline has a risk of leakage. Similarly, the gas monitoring system 100 can determine whether all user pipelines are leaking. In addition, the gas monitoring system 100 can also make a pressure regulator abnormality judgment based on the above situation. Specifically, the remote monitoring platform 12 averages the pipeline pressure reference values ​​of the three units to obtain the regional pressure regulation reference value of the community. When the deviation between the pipeline pressure reference value of any of the three units and the regional pressure regulation reference value of the community exceeds the preset pressure regulation threshold, the pressure regulator of the unit is judged to be abnormal.

[0059] According to the above description, the gas monitoring system 100 provided in the embodiment of the present application cooperates with the pressure detection module 11 and the remote monitoring platform 12. Based on the absolute pipeline pressure data of each pipeline, it can not only determine whether there is a leak in different branch gas pipelines under the same pressure regulator, but also determine whether different pressure regulators in the same area are abnormal, thereby expanding the scope of use of the gas monitoring system 100.

[0060] As an optional implementation, the absolute pressure sensing unit 111 can be separately set in the gas pipeline. Furthermore, the absolute pressure sensing unit 111 can be set in the gas meter. In the gas monitoring system 100 provided in the embodiment of the present application, the absolute pressure sensing unit 111 is set in the gas meter, and the absolute pressure sensing unit 111 is connected to the remote monitoring platform 12 based on the communication unit of the gas meter. Through the above-mentioned setting, the absolute pressure sensing unit 111 does not need to set up a separate communication unit, and the absolute pipeline pressure data obtained can be uploaded to the remote monitoring platform 12 through the communication unit of the gas meter, thereby reducing the cost of the gas monitoring system 100.

[0061] As an alternative implementation, the gas meter is used to detect the flow rate of the gas pipeline to be measured, and determine the gas usage condition based on the detected flow rate data. When the gas meter determines that the user is not using gas, the absolute pipeline pressure data detected by the absolute pressure sensing unit 111 is valid, and the absolute pressure sensing unit 111 uploads the detected valid absolute pipeline pressure data to the remote monitoring platform 12.

[0062] Specifically, the remote monitoring platform 12 receives the absolute pipeline pressure data detected by each absolute pressure sensing unit 111 as the absolute pipeline pressure data when the user is not using gas, avoiding misjudgment of whether the pipeline leaks by the remote monitoring platform due to the absolute pipeline pressure data that drops when the user is using gas normally, and improving the accuracy of the remote monitoring platform in judging whether the pipeline leaks.

[0063] As an alternative implementation, the gas meter detects the flow rate of the gas pipeline to be measured. When the flow rate of the gas pipeline to be measured is lower than the preset flow rate threshold, the gas meter determines that the user is not using gas.

[0064] Specifically, the preset flow rate threshold is the lowest value of the gas pipeline flow rate when the user is using gas normally, usually set to 60 L / h. When the gas meter detects that the flow rate of the gas pipeline to be measured is less than 60 L / h, it is determined that the user is not using gas. At this time, the absolute pressure sensing unit 111 uploads the detected absolute pipeline pressure data to the remote monitoring platform 12 for further analysis. Through the above settings, the accuracy of the gas meter in judging whether the user is using gas can be improved, thereby improving the effectiveness of the absolute pipeline pressure data received by the remote monitoring platform 12.

[0065] As an alternative implementation, the remote monitoring platform 12 uses timestamps to mark the generation time of each received absolute pipeline pressure data. When the remote monitoring platform 12 analyzes the absolute pipeline pressure data detected by each absolute pressure sensing unit 111 in the same group, the deviation between the generation times of the absolute pipeline pressure data for analysis is less than the preset time threshold. Among them, the preset time threshold is a certain time period, such as 5 minutes, 10 minutes, etc.

[0066] Through the above settings, the absolute pipeline pressure data for analysis can come from the same time period, the influence of external factors on the pipeline pressure can be excluded, and the reliability of each absolute pipeline pressure data for analysis is improved.

[0067] As Figure 5 shown, as an alternative implementation method, the steps for setting the pipeline pressure reference value include:

[0068] Step S301: Each absolute pressure sensing unit 111 monitors the absolute pipeline pressure data of each gas pipeline to be measured;

[0069] Step S302: The gas meter detects the flow rate of the gas pipeline to be tested;

[0070] Step S303: When the flow rate of the gas pipeline to be tested is lower than the preset flow rate threshold, execute step S305, otherwise execute step S304.

[0071] Step S304: The gas meter determines the user's gas usage;

[0072] Step S305: the gas meter determines that the user has not used gas, and the remote monitoring platform 12 receives the absolute pipeline pressure data of the gas pipeline when the user has not used gas and the time when the absolute pipeline pressure data is obtained;

[0073] Step S306: the remote monitoring platform 12 groups the absolute pressure sensing units 111 according to a preset rule;

[0074] Step S307: within a preset time threshold, average processing is performed on the absolute pipeline pressure data received in the same group to obtain a pipeline pressure reference value.

[0075] Through the above settings, the influence of external interference factors on the pipeline pressure data can be eliminated, making the obtained pipeline pressure reference value more referenceable, and thus when judging whether the pipeline is leaking by comparing the absolute pipeline pressure data and the pipeline pressure reference value, the judgment result can be made more accurate.

[0076] like Figure 6 As shown, the embodiment of the present application also provides a gas monitoring method, comprising the following steps:

[0077] Step S1: monitoring the absolute pipeline pressure data of each gas pipeline to be tested;

[0078] Step S2: grouping the absolute pipeline pressure data according to preset rules;

[0079] Step S3: Analyze each absolute pipeline pressure data in the same group and set the pipeline pressure reference value. When any absolute pipeline pressure data is lower than the pipeline pressure reference value and the deviation between the absolute pipeline pressure data and the pipeline pressure reference value exceeds the preset pressure threshold, it is judged that the gas pipeline corresponding to the absolute pipeline pressure data has a leakage risk.

[0080] The absolute pipeline pressure data in step S1 is the absolute pipeline pressure data when the user does not use gas. The preset rule in step S2 includes grouping the absolute pressure sensing units 111 according to the distribution information of the pipeline network pressure regulator, and grouping the absolute pressure sensing units 111 arranged in different branch gas pipelines under the same pressure regulator into the same group.

[0081] Through the above method, only one absolute pressure sensing unit needs to be set in the pipeline to be tested to determine whether the pipeline is leaking according to the absolute pipeline pressure data, and accurate determination of whether the pipeline is leaking can be achieved at a relatively low cost. The above disclosure is only a preferred embodiment of the present application, but it is not intended to limit the scope of rights of the present application. Those skilled in the art can understand that within the spirit and scope of the present application and the attached claims, changes, modifications, substitutions, combinations, and simplifications should all be equivalent replacement methods and still fall within the scope of the invention.

Claims

1. A gas monitoring system, It is characterized in that The gas monitoring system comprises: A pressure detection module, comprising at least two absolute pressure sensing units, each of which is arranged in each gas pipeline to be tested, so as to monitor the absolute pipeline pressure data of each gas pipeline to be tested; A remote monitoring platform, the remote monitoring platform is communicatively connected with the pressure detection module and receives the absolute pipeline pressure data detected by each of the absolute pressure sensing units; The remote monitoring platform also groups the absolute pressure sensing units according to preset rules, analyzes the absolute pipeline pressure data detected by the absolute pressure sensing units in the same group, and sets a pipeline pressure reference value. When the absolute pipeline pressure data detected by any of the absolute pressure sensing units is lower than the pipeline pressure reference value, and the deviation between the absolute pipeline pressure data and the pipeline pressure reference value exceeds a preset pressure threshold, the remote monitoring platform determines that there is a risk of leakage in the gas pipeline corresponding to the absolute pressure sensing unit.

2. The gas monitoring system according to claim 1, It is characterized in that The remote monitoring platform stores the distribution information of the pipeline network pressure regulators. The preset rules include grouping the absolute pressure sensing units according to the distribution information of the pipeline network pressure regulators, and classifying the absolute pressure sensing units arranged in different branch gas pipelines under the same pressure regulator into the same group.

3. The gas monitoring system according to claim 2, It is characterized in that The remote monitoring platform performs average processing on the absolute pipeline pressure data detected by each of the absolute pressure sensing units in the same group to obtain the pipeline pressure reference value.

4. The gas monitoring system according to claim 3, It is characterized in that The remote monitoring platform is also used to compare the pipeline pressure reference values ​​of different groups, and the pressure regulators corresponding to the groups used for comparison belong to the same area, and the pressure regulation area is divided by the remote monitoring platform according to the distribution information of the pipeline network pressure regulators; When the deviation between the pipeline pressure reference value and the regional pressure regulation reference value of any group is greater than a preset pressure regulation threshold, the remote monitoring platform determines that the pressure regulator corresponding to the group is abnormal, wherein the regional pressure regulation reference value is set according to the pipeline pressure reference value of each group used for comparison.

5. The gas monitoring system according to claim 4, It is characterized in that The remote monitoring platform performs mean processing on the pipeline pressure reference values ​​of each group used for comparison to obtain the regional pressure regulation reference value.

6. The gas monitoring system according to claim 1, It is characterized in that The absolute pressure sensing unit is arranged in the gas meter, and the absolute pressure sensing unit is communicatively connected with the remote monitoring platform based on the communication unit of the gas meter.

7. The gas monitoring system according to claim 6, It is characterized in that The gas meter is used to detect the flow of the gas pipeline to be tested, and judge the gas usage status based on the detected flow data. When the gas meter determines that the user is not using gas, the absolute pipeline pressure data detected by the absolute pressure sensing unit is valid, and the absolute pressure sensing unit uploads the detected valid absolute pipeline pressure data to the remote monitoring platform.

8. The gas monitoring system according to claim 7, It is characterized in that The gas meter detects the flow of the gas pipeline to be tested. When the flow of the gas pipeline to be tested is lower than a preset flow threshold, the gas meter determines that the user has not used gas.

9. The gas monitoring system according to claim 1, It is characterized in that The remote monitoring platform uses a timestamp to mark the generation time of each received absolute pipeline pressure data. When the remote monitoring platform analyzes the absolute pipeline pressure data detected by each absolute pressure sensing unit in the same group, the deviation between the generation time of each analyzed absolute pipeline pressure data is less than a preset time threshold.

10. A gas monitoring method, It is characterized in that The method comprises the following steps: Monitoring the absolute pipeline pressure data of each of the gas pipelines to be tested; According to a preset rule, each of the absolute pipeline pressure data is grouped; The absolute pipeline pressure data in the same group are analyzed, and a pipeline pressure reference value is set. When any of the absolute pipeline pressure data is lower than the pipeline pressure reference value, and the deviation between the absolute pipeline pressure data and the pipeline pressure reference value exceeds a preset pressure threshold, it is determined that the gas pipeline corresponding to the absolute pipeline pressure data has a leakage risk.

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