CN119737573B - A multi-dimensional safety monitoring method and system for natural gas stations - Google Patents
A multi-dimensional safety monitoring method and system for natural gas stationsInfo
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- CN119737573B CN119737573B CN202411880682.XA CN202411880682A CN119737573B CN 119737573 B CN119737573 B CN 119737573B CN 202411880682 A CN202411880682 A CN 202411880682A CN 119737573 B CN119737573 B CN 119737573B
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Abstract
本发明涉及多维安全监测技术领域，尤其涉及一种用于天然气场站的多维安全监测方法及系统，该方法包括周期性获取天然气场站管道的历史维修数据以及管道所处环境参数数据；基于第一预设周期内天然气场站管道的故障维修频率，以及，第一预设周期内天然气场站管道所处环境的侵蚀度，确定关键监测区域；基于关键监测区域是否处于固定摄像头盲区，确定以不同参数针对天然气场站管道发出预警；基于第二预设周期内发出预警时管道破损事件的发生率，以及，响应于第二预设周期内发出警告信号的相同管道位置处是否出现连续误判，确定是否减小传感器校准周期，或，在后续判断时是否排除出现连续误判的管道位置处的误判区域；本发明提高了天然气场站的安全监测精度。
The present invention relates to the technical field of multi-dimensional safety monitoring, and in particular to a multi-dimensional safety monitoring method and system for a natural gas station. The method comprises periodically acquiring historical maintenance data of a natural gas station pipeline and parameter data of an environmental environment in which the pipeline is located; determining a key monitoring area based on the frequency of fault maintenance of the natural gas station pipeline within a first preset period and the degree of corrosiveness of the environment in which the natural gas station pipeline is located within the first preset period; determining whether to issue an early warning for the natural gas station pipeline using different parameters based on whether the key monitoring area is in a blind spot of a fixed camera; determining whether to reduce a sensor calibration period or to exclude an erroneous area at a pipeline position where erroneous judgments have occurred in subsequent judgments based on the incidence rate of pipeline damage events when an early warning is issued within a second preset period and whether continuous misjudgments occur at the same pipeline position in response to a warning signal issued within the second preset period; the present invention improves the safety monitoring accuracy of a natural gas station.
Description
Technical Field
The invention relates to the technical field of multidimensional safety monitoring, in particular to a multidimensional safety monitoring method and system for a natural gas station.
Background
Natural gas is an important energy source and plays a key role in industrial production and resident life, a natural gas station is a key node for storing, conveying and distributing natural gas, the safe operation of the natural gas station is crucial, once accidents such as leakage and explosion and the like occur in the natural gas station, serious economic loss can be caused, and huge threats are caused on personnel life safety and environment, and the safety monitoring of the natural gas station in the prior art mainly depends on manual inspection and periodical maintenance, however, the method has a plurality of limitations. The manual inspection efficiency is low, the coverage is limited, potential safety hazards are difficult to find in time, the normal operation of equipment can be guaranteed to a certain extent through regular maintenance, the operation state of a pipeline cannot be monitored in real time, sudden faults are difficult to respond in time, in addition, the traditional safety monitoring method can only detect single parameters, such as pressure, temperature and the like, the safety condition of the pipeline cannot be comprehensively and accurately reflected, and in addition, for some hidden faults, such as tiny leakage, corrosion inside the pipeline and the like, the traditional method is difficult to detect.
CN117113255B discloses a liquefied natural gas safety monitoring system based on state monitoring and automatic content identification, which comprises an acquisition processing unit, a state monitoring unit, an analysis prediction unit, an alarm disposal unit and an emergency dispatching unit, wherein the emergency dispatching unit is used for receiving data after abnormal state detection, data after analysis and data after trend prediction, making an emergency plan for the data after abnormal state detection, the data after analysis and the data after trend prediction, and performing intelligent dispatching for the made emergency plan.
Therefore, the problem of low safety monitoring efficiency caused by the fact that the number of misjudgment times is large due to the fact that the safety monitoring process of the natural gas station is not analyzed accurately enough in the prior art is solved.
Disclosure of Invention
Therefore, the invention provides a multidimensional safety monitoring method and a multidimensional safety monitoring system for a natural gas station, which are used for solving the problem that in the prior art, the safety monitoring efficiency is low due to the fact that the number of misjudgment times is large because the safety monitoring process of the natural gas station is not analyzed accurately enough.
To achieve the above object, the present invention provides a multi-dimensional safety monitoring method for a natural gas field station, comprising:
Periodically acquiring historical maintenance data of a natural gas station pipeline and environmental parameter data of the pipeline;
determining a key monitoring area based on the fault maintenance frequency of the natural gas station pipeline in the first preset period and the erosion degree of the environment where the natural gas station pipeline is located in the first preset period;
determining whether to send out early warning for the natural gas station pipeline according to the sensor data of the non-key monitoring area;
Determining whether to send an early warning for a natural gas station pipeline according to whether the degradation rate of sensor data in a preset time period is larger than a preset degradation rate or whether a pipeline breakage phenomenon occurs in a real-time video based on whether a key monitoring area is in a fixed camera blind area;
determining to close a pipeline valve or send out a warning signal based on whether abnormal data exists in the natural gas station pipeline sending out the early warning;
Determining whether to reduce the sensor calibration period or exclude a misjudgment area at the pipeline position where the continuous misjudgment occurs in the subsequent judgment based on the occurrence rate of the pipeline breakage event when the early warning is sent out in the second preset period and in response to whether the continuous misjudgment occurs at the same pipeline position where the warning signal is sent out in the second preset period;
the erosion degree is determined according to the pH value and the humidity of the environment where the natural gas station pipeline is located, and judging that the pipeline breakage phenomenon occurs in the real-time video comprises the existence of black lines or black concave areas in the real-time video.
Further, the determining the critical monitoring area includes:
If the fault maintenance frequency of the natural gas station pipeline is greater than the preset maintenance frequency or the corrosion degree of the environment where the natural gas station pipeline is located is greater than the preset corrosion degree, determining that the natural gas station pipeline is a key monitoring area;
And if the fault maintenance frequency of the natural gas station pipeline is smaller than or equal to the preset maintenance frequency and the erosion degree of the environment where the natural gas station pipeline is located is smaller than or equal to the preset erosion degree, determining that the natural gas station pipeline is a non-critical monitoring area.
Further, the determining whether to send out the early warning for the natural gas field station pipeline according to the sensor data of the non-critical monitoring area comprises:
And if any sensor data of the non-critical monitoring area is larger than a corresponding preset threshold value, determining to send out early warning aiming at the natural gas station pipeline.
Further, the preset threshold is determined according to a historical average of sensor data when the pipeline is damaged.
Further, the determining whether to issue an early warning for the natural gas field pipeline further comprises:
If the key monitoring area is in the dead zone of the fixed camera, determining that a pipeline breakage phenomenon occurs in the real-time video or that the deterioration rate of sensor data in a preset duration is greater than a preset deterioration rate, and giving an early warning for the pipeline of the natural gas station;
If the key monitoring area is not in the dead zone of the fixed camera, determining that the deterioration rate of the sensor data in the preset time period is greater than the preset deterioration rate, and sending out early warning for the natural gas station pipeline.
Further, the predetermined degradation rate is determined based on a historical average degradation rate of corresponding sensor data over a predetermined period of time when the pipe is subject to breakage.
Further, the determining to close the conduit valve or to signal a warning includes:
if abnormal data exists in the natural gas station pipeline sending the early warning, determining to close a pipeline valve;
And if the natural gas station pipeline sending the early warning does not have abnormal data, determining to send out a warning signal.
Further, the determining whether to reduce the sensor calibration period or whether to exclude the erroneous judgment area at the pipe position where the continuous erroneous judgment occurs in the subsequent judgment includes:
If the occurrence rate of the pipeline breakage event when the early warning is sent out in the second preset period is smaller than the preset occurrence rate and continuous misjudgment does not occur at the same pipeline position where the warning signal is sent out in the second preset period, determining to reduce the sensor calibration period;
if the occurrence rate of the pipeline breakage event when the early warning is sent out in the second preset period is smaller than the preset occurrence rate and whether continuous misjudgment occurs at the same pipeline position where the warning signal is sent out in the second preset period, determining to exclude a misjudgment area at the pipeline position where the continuous misjudgment occurs in the subsequent judgment.
Further, the adjustment amount of the sensor calibration period is positively correlated with the occurrence rate of the pipeline breakage event when the early warning is sent out in the second preset period.
A system for application to the multi-dimensional safety monitoring method for a natural gas field station, comprising:
the data acquisition module comprises a data acquisition unit used for acquiring historical maintenance data of the natural gas station pipeline and data of each sensor of the natural gas station pipeline and a video acquisition unit used for acquiring real-time video data of the natural gas station pipeline;
The system comprises a data acquisition module, a data analysis module, a real-time video monitoring module and a real-time video monitoring module, wherein the data acquisition module is connected with the data acquisition module and is used for determining a key monitoring area according to the fault maintenance frequency of a natural gas station pipeline in a first preset period and the erosion degree of the environment where the natural gas station pipeline is located in the first preset period, determining whether to send out early warning for the natural gas station pipeline according to the sensor data of a non-key monitoring area, determining whether the deterioration rate of the sensor data in the preset period is greater than the preset deterioration rate according to the fact that the key monitoring area is in a fixed camera blind area, or determining whether to send out early warning for the natural gas station pipeline according to the occurrence of pipeline breakage phenomenon in a real-time video;
the early warning module is connected with the data analysis module and is used for determining to close the pipeline valve or sending out a warning signal according to whether abnormal data exists in the pipeline of the natural gas station sending out the early warning;
the adjusting module is connected with the early warning module and is used for determining whether to reduce the sensor calibration period or to exclude the misjudgment area at the pipeline position where the continuous misjudgment occurs in response to whether the continuous misjudgment occurs at the same pipeline position where the warning signal is sent out in the second preset period or not according to the occurrence rate of the pipeline breakage event when the early warning is sent out in the second preset period.
Compared with the prior art, the method has the beneficial effects that the critical monitoring area and the non-critical monitoring area are divided by comprehensively considering the fault maintenance frequency and the corrosion degree determined based on the environmental pH value and the humidity, so that the monitoring resources can be distributed more reasonably, for the natural gas station pipeline which is determined as the critical monitoring area, the monitoring force can be increased due to relatively higher fault occurrence probability, the non-critical monitoring area can adopt a relatively conventional monitoring mode, the resource waste is avoided, the monitoring efficiency and the accuracy are integrally improved, the pipelines which are easy to fail (high in maintenance frequency) or are in high environmental corrosion (high in corrosion degree) are accurately positioned as the critical monitoring area, potential safety hazards can be found in advance, for example, for the pipelines which are in an acidic environment with high humidity for a long time and have high corrosion degree, abnormal signals can be captured before accidents such as serious damages, such as maintenance and explosion occur in time, the safety and stable operation of the natural gas station can be ensured, the safety and judgment accuracy of the safety station safety and judgment process of the natural gas station is improved through the method, so that the safety monitoring efficiency is improved.
Furthermore, the invention determines whether to pre-warn by comparing the sensor data of the non-critical monitoring area with the preset threshold value determined according to the historical average value of the sensor data when the pipeline is damaged, and can accurately capture the abnormal signal possibly indicating the problem of the pipeline, even if the non-critical monitoring area with lower relative risk is provided, once the sensor data exceeds the corresponding preset threshold value, the condition that the running state of the pipeline deviates from normal is indicated, and hidden dangers such as damage are likely to exist, so that the pre-warn is sent out in time, the hidden dangers are prevented from developing into serious accidents due to neglecting the areas, and the accuracy of analyzing the safety monitoring process of the natural gas station is improved by the method so as to reduce the misjudgment times and further improve the safety monitoring efficiency.
Furthermore, whether the critical monitoring area is in the dead zone of the fixed camera, the pipeline damage condition in the real-time video and the comparison result of the data deterioration rate of the sensor and the preset rate are combined to judge whether the early warning is sent out, so that the misjudgment condition which is possibly caused by judging by only a single factor is avoided, different early warning bases are determined according to the visual condition of the critical monitoring area, and the monitoring resources are guided to be distributed more reasonably. For the area which is not in the dead zone of the fixed camera, real-time analysis of sensor data can be properly focused, and for the area which is in the dead zone, the corresponding investigation and maintenance processes can be started quickly when corresponding conditions are met, the possibility of safety accidents caused by untimely response is reduced, the potential emergency response speed and processing capacity of the whole natural gas station to the risks are improved, the accuracy of analysis of the safety monitoring process of the natural gas station is improved, the number of times of misjudgment is reduced, and the safety monitoring efficiency is further improved.
Further, the invention decides whether to reduce the calibration period of the sensor according to the comparison condition of the occurrence rate of the pipeline breakage event and the preset occurrence rate when the early warning is sent out in the second preset period, thereby realizing the dynamic optimization of the calibration work of the sensor, if the occurrence rate is smaller than the preset occurrence rate, the early warning effect of the current sensor is relatively better, the false alarm condition is fewer, the calibration period is properly reduced, the accuracy of the sensor data can be further improved, the sensor can capture the subtle change of the pipeline more sensitively, the accurate data support is better provided for the subsequent judgment of the pipeline safety condition, the reliability of the whole monitoring system is improved, when the continuous false judgment occurs at the same pipeline position of sending out the warning signal in the second preset period, the false judgment area is confirmed to be eliminated in the subsequent judgment, and the interference of the frequently false judgment area on the whole judgment work can be effectively avoided. The continuous misjudgment is probably that the data of the area always appear abnormal due to the reasons of local environmental factors, sensor faults and the like, but the actual pipeline is not damaged, after the data are removed, workers can focus on the area which is more valuable and more likely to appear real hidden danger when analyzing whether the pipeline has problems or not, unnecessary investigation and analysis work is reduced, the decision judgment efficiency is improved, the analysis accuracy of the safety monitoring process of the natural gas station is improved by the method, the misjudgment times are reduced, and the safety monitoring efficiency is further improved.
Drawings
FIG. 1 is a workflow diagram of a multi-dimensional safety monitoring method for a natural gas field station in accordance with an embodiment of the present invention;
FIG. 2 is a flowchart illustrating the operation of determining critical monitoring areas in a multi-dimensional safety monitoring method for a natural gas field station according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a system for applying the multi-dimensional safety monitoring method for a natural gas field station according to an embodiment of the present invention.
Detailed Description
The invention will be further described with reference to examples for the purpose of making the objects and advantages of the invention more apparent, it being understood that the specific examples described herein are given by way of illustration only and are not intended to be limiting.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present invention, and are not intended to limit the scope of the present invention.
It should be noted that, in the description of the present invention, terms such as "upper," "lower," "left," "right," "inner," "outer," and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In addition, it should be noted that, in the description of the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediate medium, or in communication between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to the specific circumstances.
Referring to fig. 1-2, fig. 1 is a flowchart illustrating a multi-dimensional safety monitoring method for a natural gas station according to an embodiment of the present invention, and fig. 2 is a flowchart illustrating a determination of a critical monitoring area in the multi-dimensional safety monitoring method for a natural gas station according to an embodiment of the present invention.
The invention provides a multidimensional safety monitoring method for a natural gas station, which comprises the following steps:
step S1, periodically acquiring historical maintenance data of a natural gas station pipeline and environmental parameter data of the pipeline;
Step S2, determining a key monitoring area based on the fault maintenance frequency of the natural gas station pipeline in a first preset period and the erosion degree of the environment where the natural gas station pipeline is located in the first preset period;
step S3, determining whether to send out early warning for the natural gas station pipeline according to the sensor data of the non-key monitoring area;
Step S4, determining whether to send early warning for a natural gas station pipeline according to whether the key monitoring area is in a dead zone of a fixed camera or not, and determining that the deterioration rate of sensor data in a preset time period is larger than a preset deterioration rate or whether a pipeline breakage phenomenon occurs in a real-time video;
Step S5, determining to close a pipeline valve or send out a warning signal based on whether abnormal data exists in the natural gas station pipeline sending out the early warning;
step S6, determining whether to reduce the sensor calibration period or exclude a misjudgment area at the pipeline position where the continuous misjudgment occurs in response to whether the continuous misjudgment occurs at the same pipeline position where the warning signal is sent out in the second preset period or not based on the occurrence rate of the pipeline breakage event when the early warning is sent out in the second preset period;
wherein the erosion degree is determined according to the pH value and the humidity of the environment where the natural gas station pipeline is located, and the judgment of the occurrence of the pipeline breakage phenomenon in the real-time video comprises the existence of black lines or black concave areas in the real-time video
The historical maintenance data in the embodiment of the invention comprises, but is not limited to, "pipeline maintenance times, pipeline maintenance positions and pipeline maintenance reasons", and the environmental parameter data comprises, but is not limited to, "acidity data, alkalinity data and humidity data".
Specifically, in step S2, when determining the critical monitoring area, determining the critical monitoring area according to the fault maintenance frequency of the natural gas station pipeline in the first preset period and the erosion degree of the environment where the natural gas station pipeline is located in the first preset period;
When the fault maintenance frequency of the natural gas station pipeline is larger than the preset maintenance frequency or the corrosion degree of the environment where the natural gas station pipeline is located is larger than the preset corrosion degree, determining the natural gas station pipeline as a key monitoring area;
And when the fault maintenance frequency of the natural gas station pipeline is smaller than or equal to the preset maintenance frequency and the erosion degree of the environment where the natural gas station pipeline is located is smaller than or equal to the preset erosion degree, determining that the natural gas station pipeline is a non-critical monitoring area.
In the embodiment of the invention, the first preset period is set to 30 days, the erosion degree of the environment where the natural gas station pipeline is located is determined according to the pH value and the humidity of the environment where the natural gas station pipeline is located, the erosion degree is the sum of the absolute value of the difference between the pH value and 7 of the environment where the natural gas station pipeline is located and the humidity, for example, the pH value of the environment where the natural gas station pipeline is located is 3, the humidity is 30%, the erosion degree is 4.3, and the preset erosion degree is set to 3.5, but the erosion degree is not limited to this, and the value can be adjusted according to actual needs by those skilled in the art.
According to the method, the critical monitoring area and the non-critical monitoring area are divided by comprehensively considering the fault maintenance frequency and the erosion degree determined based on the environmental pH value and the humidity, so that monitoring resources can be distributed more reasonably, for the natural gas station pipeline which is determined to be the critical monitoring area, the monitoring force can be increased due to relatively high possibility of fault occurrence, the non-critical monitoring area can adopt a relatively conventional monitoring mode, resource waste is avoided, the monitoring efficiency and the accuracy are improved integrally, the pipelines which are easy to fail (high in maintenance frequency) or are high in environmental erosion degree (high in erosion degree) are accurately positioned to be the critical monitoring area, potential safety hazards can be found in advance, for example, for the pipelines which are in an acidic environment with high humidity and high in erosion degree for a long time, abnormal signals can be captured before accidents such as serious damage, leakage and explosion occur in the pipelines, and the safety and stable operation of the natural gas station can be taken in advance, the safety and stability of the natural gas station can be guaranteed, the accuracy of analysis of the safety monitoring process of the natural gas station is improved through the method, so that the safety judgment frequency is reduced, and the safety judgment efficiency is improved.
Specifically, in step S3, when determining whether to send out an early warning for a natural gas station pipeline according to the sensor data of the non-critical monitoring area, determining whether to send out an early warning for the natural gas station pipeline according to the comparison result of the sensor data of the non-critical monitoring area and a preset threshold;
when any sensor data of the non-key monitoring area is larger than a corresponding preset threshold value, determining to send out early warning for the natural gas station pipeline;
and when all the sensor data of the non-critical monitoring area are smaller than the corresponding preset threshold value, determining that no early warning is sent for the natural gas station pipeline.
The sensor data in the embodiment of the present invention includes, but is not limited to, "pressure sensor data, temperature sensor data, and vibration sensor data", where the preset threshold is determined according to a historical average of the sensor data when the pipe is damaged, for example, the historical average of the temperature sensor data when the pipe is damaged is the preset threshold of the temperature sensor data.
According to the method, whether the early warning is carried out is determined by comparing the sensor data of the non-critical monitoring area with the preset threshold value determined according to the historical average value of the sensor data when the pipeline is damaged, so that abnormal signals possibly indicating the occurrence of problems of the pipeline can be accurately captured, even in the non-critical monitoring area with lower relative risk, once the sensor data exceeds the corresponding preset threshold value, the condition that the running state of the pipeline deviates from normal is indicated, and hidden dangers such as damage are likely to exist, and therefore early warning is timely sent out, the hidden dangers are prevented from developing into serious accidents caused by neglecting the areas, and the accuracy of analysis of the safety monitoring process of the natural gas station is improved by the method so that the misjudgment number is reduced, and the safety monitoring efficiency is further improved.
Specifically, in step S4, when determining whether to send out an early warning for the natural gas station pipeline, determining whether to send out an early warning for the natural gas station pipeline according to whether the key monitoring area is in a dead zone of the fixed camera, whether a pipeline breakage phenomenon occurs in the real-time video, and a comparison result of a deterioration rate of sensor data and a preset rate within a preset duration;
when the key monitoring area is in a fixed camera blind area, determining that a pipeline breakage phenomenon occurs in a real-time video or early warning is sent to a natural gas station pipeline according to the fact that the deterioration rate of sensor data in a preset duration is greater than a preset deterioration rate;
And when the key monitoring area is not in the fixed camera blind area, determining that the deterioration rate of the sensor data in the preset time period is greater than the preset deterioration rate, and sending out early warning for the natural gas station pipeline.
In the embodiment of the invention, the preset duration is set to 30 seconds, the value of the preset deterioration rate is the historical average deterioration rate of corresponding sensor data in the preset duration when the pipeline is damaged, the deterioration rate of the sensor data in the preset duration is the change rate of the sensor data close to the preset threshold in the preset duration which is more than nine tenth of the preset threshold, for example, the preset threshold corresponding to the normal operation pressure range of a certain natural gas station pipeline is assumed to be 4MPa (megapascal), in the monitoring process, the pressure sensor data gradually rises and reaches nine tenth of the preset threshold, namely, 4mpa×0.9=3.6 MPa, the time is counted from the moment that the pressure reaches 3.6MPa, if the pressure continuously changes rapidly towards the direction close to the preset threshold, for example, 3.6MPa in the preset duration (30 seconds), and the change amount of the pressure in the 30 seconds is 3.9MPa-3.6 mpa=0.3 MPa after 30 seconds. The deterioration rate of the pressure sensor data in the 30 seconds is 0.3 MPa/30 seconds=0.01 MPa/second, and if the preset deterioration rate is set to 0.008 MPa/second, the condition of sending out the early warning is satisfied because the actual deterioration rate of 0.01 MPa/second is greater than the preset deterioration rate, and the early warning needs to be sent out for the natural gas station pipeline.
According to the invention, whether the critical monitoring area is in the dead zone of the fixed camera, the pipeline damage condition in the real-time video and the comparison result of the data deterioration rate of the sensor and the preset rate are combined to judge whether the early warning is sent out, so that the possible misjudgment condition of judging by only depending on a single factor is avoided, different early warning bases are determined according to the visual condition of the critical monitoring area, and the monitoring resource is guided to be distributed more reasonably. For the area which is not in the dead zone of the fixed camera, real-time analysis of sensor data can be properly focused, and for the area which is in the dead zone, the corresponding investigation and maintenance processes can be started quickly when corresponding conditions are met, the possibility of safety accidents caused by untimely response is reduced, the potential emergency response speed and processing capacity of the whole natural gas station to the risks are improved, the accuracy of analysis of the safety monitoring process of the natural gas station is improved, the number of times of misjudgment is reduced, and the safety monitoring efficiency is further improved.
Specifically, in step S5, when it is determined to close the pipeline valve or issue a warning signal, it is determined to close the pipeline valve or issue a warning signal according to whether or not abnormal data exists in the pipeline of the natural gas station that issues the early warning;
When abnormal data exists in the natural gas station pipeline sending out the early warning, determining to close a pipeline valve;
and when the natural gas station pipeline sending the early warning does not have abnormal data, determining to send out a warning signal.
In the embodiment of the invention, the abnormal data is sensor data exceeding a preset threshold value and sensor data with a deterioration rate greater than a preset deterioration rate, and the warning signal includes but is not limited to warning the staff of pipeline breakage.
Specifically, in step S6, when it is determined whether to reduce the sensor calibration period or whether to exclude the erroneous determination area at the pipe position where the continuous erroneous determination occurs at the time of the subsequent determination, whether the continuous erroneous determination occurs at the same pipe position in response to the warning signal sent out in the second preset period and according to the occurrence rate of the pipe breakage event at the time of the early warning sent out in the second preset period;
When the occurrence rate of the pipeline breakage event is smaller than the preset occurrence rate during the early warning in the second preset period and continuous misjudgment does not occur at the same pipeline position where the warning signal is sent in the second preset period, determining to reduce the sensor calibration period;
And when the occurrence rate of the pipeline breakage event when the early warning is sent out in the second preset period is smaller than the preset occurrence rate and whether continuous misjudgment occurs at the same pipeline position where the warning signal is sent out in the second preset period, determining a misjudgment area at the pipeline position where the continuous misjudgment occurs in the subsequent judgment.
In the embodiment of the present invention, the value of the second preset period is set to 10 days, the occurrence rate of the pipeline breakage event when the early warning is sent is the ratio of the occurrence number of the pipeline valve breakage event when the early warning is sent to the occurrence number of the early warning, and the value of the preset occurrence rate is set to 0.85, but the value is not limited thereto, and the value can be adjusted by those skilled in the art according to actual needs.
Specifically, when it is determined to decrease the sensor calibration period, it is determined to adjust the sensor calibration period by an adjustment coefficient.
In the embodiment of the present invention, the value range of the adjustment coefficient is set to 0.82-0.96, the value of the adjustment coefficient is preferably 0.86, and the adjustment amount of the sensor calibration period is positively correlated with the occurrence rate of the pipeline breakage event when the early warning is sent out in the second preset period, but the value is not limited thereto, and the person skilled in the art can also adjust the value according to actual needs.
In the embodiment of the invention, the erroneous judgment region excluding the position of the pipeline with continuous erroneous judgment during the subsequent judgment comprises the erroneous judgment region excluding the position of the pipeline with continuous erroneous judgment during the subsequent judgment.
According to the invention, whether the sensor calibration period is reduced or not is determined according to the comparison condition of the occurrence rate of the pipeline breakage event and the preset occurrence rate when the early warning is sent out in the second preset period, so that the dynamic optimization of the sensor calibration work is realized, if the occurrence rate is smaller than the preset occurrence rate, the early warning effect of the current sensor is relatively good, the false alarm condition is less, the accuracy of sensor data can be further improved by properly reducing the calibration period, so that the accurate change of the pipeline can be captured more sensitively, accurate data support is better provided for the follow-up judgment of the pipeline safety condition, the reliability of the whole monitoring system is improved, when the continuous misjudgment occurs at the same pipeline position where the warning signal is sent out in the second preset period, the misjudgment area is determined to be eliminated in the follow-up judgment, and the interference of the frequent misjudgment areas on the whole judgment work can be effectively avoided. The continuous misjudgment is probably that the data of the area always appear abnormal due to the reasons of local environmental factors, sensor faults and the like, but the actual pipeline is not damaged, after the data are removed, workers can focus on the area which is more valuable and more likely to appear real hidden danger when analyzing whether the pipeline has problems or not, unnecessary investigation and analysis work is reduced, the decision judgment efficiency is improved, the analysis accuracy of the safety monitoring process of the natural gas station is improved by the method, the misjudgment times are reduced, and the safety monitoring efficiency is further improved.
Referring to fig. 3, fig. 3 is a schematic diagram of a system for applying the multi-dimensional security monitoring method for a natural gas field station according to an embodiment of the invention.
Specifically, a system applied to the multi-dimensional safety monitoring method for a natural gas field station comprises:
the data acquisition module comprises a data acquisition unit used for acquiring historical maintenance data of the natural gas station pipeline and data of each sensor of the natural gas station pipeline and a video acquisition unit used for acquiring real-time video data of the natural gas station pipeline;
The system comprises a data acquisition module, a data analysis module, a real-time video monitoring module and a real-time video monitoring module, wherein the data acquisition module is connected with the data acquisition module and is used for determining a key monitoring area according to the fault maintenance frequency of a natural gas station pipeline in a first preset period and the erosion degree of the environment where the natural gas station pipeline is located in the first preset period, determining whether to send out early warning for the natural gas station pipeline according to the sensor data of a non-key monitoring area, determining whether the deterioration rate of the sensor data in the preset period is greater than the preset deterioration rate according to the fact that the key monitoring area is in a fixed camera blind area, or determining whether to send out early warning for the natural gas station pipeline according to the occurrence of pipeline breakage phenomenon in a real-time video;
the early warning module is connected with the data analysis module and is used for determining to close the pipeline valve or sending out a warning signal according to whether abnormal data exists in the pipeline of the natural gas station sending out the early warning;
the adjusting module is connected with the early warning module and is used for determining whether to reduce the sensor calibration period or to exclude the misjudgment area at the pipeline position where the continuous misjudgment occurs in response to whether the continuous misjudgment occurs at the same pipeline position where the warning signal is sent out in the second preset period or not according to the occurrence rate of the pipeline breakage event when the early warning is sent out in the second preset period.
Thus far, the technical solution of the present invention has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present invention is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present invention, and such modifications and substitutions will be within the scope of the present invention.
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