CN115081340B - Micro pipe gallery gas monitoring method and system based on simulation and deep learning - Google Patents
Micro pipe gallery gas monitoring method and system based on simulation and deep learning Download PDFInfo
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Abstract
A micro pipe gallery gas monitoring method and system based on simulation and deep learning belongs to the field of health monitoring, and a micro pipe gallery toxic and harmful gas leakage-diffusion numerical simulation calculation model is established; carrying out simulation calculation on various leakage conditions, and obtaining a micro pipe gallery toxic and harmful gas leakage model library by using a simulation result as a training sample and a test sample for deep learning; according to the set time step length, acquiring gas content monitoring data inside the micro pipe gallery, inputting the data into a micro pipe gallery toxic and harmful gas leakage model library, and acquiring the position and the leakage amount of a leakage source; inputting the position and the leakage quantity of the leakage source into a numerical simulation calculation model for simulation calculation; the real-time distribution situation of the gas concentration inside the micro pipe gallery is displayed and alarmed, and the gas concentration distribution in the future appointed time inside the micro pipe gallery is predicted, displayed and early warned. The method can realize effective early warning of the leakage of toxic and harmful gases in the micro pipe gallery.
Description
Technical Field
The invention belongs to the technical field of health monitoring, and particularly relates to a micro pipe gallery gas monitoring method and system based on simulation and deep learning.
Background
Compared with a large comprehensive pipe gallery, the micro pipe gallery has the advantages that the transverse cross-sectional area is small (2.0-3.0 m long and 1.0-2.0 m wide), the internal space is limited, the types of pipelines are many, the pipelines are distributed densely, and the convenience of workers in and out of overhaul is slightly poor. And because the underground closed space is not ventilated and is moist, volatile gas, inflammable gas and toxic gas can be generated, and the life safety of workers can be endangered. In view of the above, the distribution state of the poisonous and harmful gases in the micro pipe gallery should be monitored. To the monitoring of miniature utility tunnel, chinese utility model patent CN210802549U discloses a monitoring system of miniature utility tunnel, include: the sensor module is used for collecting pipeline condition information in the micro comprehensive pipe rack, and the pipeline condition information at least comprises pipeline gas information, pipeline temperature and humidity information and pipeline water flow information; the transmission module is used for transmitting the pipeline condition information acquired by the sensor to the monitoring module; and the monitoring module is used for processing the pipeline condition information and presenting the pipeline condition information, and is also used for giving an alarm when monitoring that the pipeline condition information is abnormal.
At present, aiming at monitoring toxic and harmful gases in a micro pipe gallery, monitoring point data is directly processed usually by installing monitoring hardware equipment in the pipe gallery, for example, chinese patent disclosure CN104880986A discloses a comprehensive pipe gallery management system and method based on BIM, wherein the system comprises a data acquisition module, an emergency processing module, an auxiliary management module, a daily maintenance module and an equipment management module; the method comprises the steps of collecting environmental state data of the comprehensive pipe gallery and medium state data in the pipe of the corridor by using a data collection module, generating an emergency treatment scheme by using an emergency treatment module when an emergency occurs, filing, managing and counting the operation data of the comprehensive pipe gallery by using an auxiliary management module, and performing daily maintenance by using a daily maintenance module and an equipment management module. Similar to the monitoring method, the existing monitoring method can only visually judge the concentration of toxic and harmful gas in the pipe gallery according to data obtained by measuring from a limited number of gas sensors, and cannot obtain the gas concentration at the position where no sensor is installed; and, can't predict the gas concentration in the piping lane according to existing measuring result to find out the position that probably has gas leakage in the piping lane, consequently, can't carry out real monitoring, prediction and early warning to the poisonous and harmful gas in the miniature piping lane.
Disclosure of Invention
The invention aims to provide a simulation and deep learning-based micro pipe gallery gas monitoring method and system, which can realize the crossing of engineering monitoring from data acquisition to data application, realize the crossing from post alarm to pre-alarm and realize the crossing from key point information to structural overall analysis by acquiring real-time monitoring data and based on-line simulation analysis and deep learning technologies.
The invention provides a micro pipe gallery gas monitoring method based on simulation and deep learning, which mainly comprises the following steps:
s01, establishing a toxic and harmful gas leakage-diffusion discrete model of the micro pipe gallery according to the physical characteristics of the micro pipe gallery;
s02, assuming the gas leakage conditions of various micro pipe galleries, and carrying out numerical simulation calculation according to the discrete model in the step S01 to obtain the gas concentration distribution condition inside the micro pipe gallery; the simulation result is used as a training sample and a testing sample for deep learning to obtain a micro pipe gallery toxic and harmful gas leakage model library;
s03, acquiring monitoring data of the content of the gas to be detected in the micro pipe gallery according to the set time step length;
s04, inputting the monitoring data in the step S03 into the micro pipe gallery toxic and harmful gas leakage model library in the step S02 to obtain the position and the leakage amount of a leakage source;
s05, inputting the position and the leakage amount of the leakage source obtained in the step S04 into the numerical simulation calculation model in the step S01, and performing simulation calculation to obtain the real-time distribution condition of the gas concentration in the micro pipe gallery and/or the gas concentration distribution condition in the micro pipe gallery in the future designated time;
and S06, displaying and alarming the gas concentration distribution condition in the interior of the micro pipe gallery in real time, and/or displaying and early warning the gas concentration distribution in the interior of the micro pipe gallery in the future designated time.
Further, in step S02, the gas leakage of the plurality of micro-tube lanes is assumed in the following manner: and carrying out meshing on the area containing the cable and the sump in the micro pipe gallery, wherein the size of each grid is 0.5m multiplied by 0.5m, and assuming different grids as leakage source positions of toxic and harmful gases and carrying out numerical simulation calculation.
Further, in step S03, the monitoring data of obtaining the gas content to be measured in the interior of the micro pipe gallery comprises:
(1) The method comprises the following steps that a gas sensor and a gas demodulator are arranged in a micro pipe gallery and used for collecting the content of gas to be detected in the micro pipe gallery in real time and converting collected information into monitoring data which can be identified by a monitoring system;
(2) Transmitting the monitoring data to the monitoring system by adopting a data transmission system;
(3) And reading the monitoring data in the monitoring system according to the set time step.
Wherein, the type of gas sensor sets up according to the particular case of piping lane, including one or more in methane sensor, carbon monoxide sensor, oxygen sensor, carbon dioxide sensor, hydrogen sulfide sensor, sulfur dioxide sensor.
Further, in step S03, the time step is automatically adjusted according to whether there is an abnormality in the numerical simulation result.
Further, in step S06, the result may be displayed in a cloud image display and/or a curve display; a global display and/or a partial magnified display.
The invention provides a micro pipe gallery gas monitoring system based on simulation and deep learning, which comprises a sensing system, a data transmission system and a monitoring system, wherein the sensing system is used for sensing the gas in a pipeline; wherein,
the sensing system is used for collecting the content of the gas to be detected in the micro pipe gallery in real time and converting the collected information into monitoring data which can be identified by the monitoring system;
the data transmission system is used for transmitting the monitoring data obtained by the perception system to the monitoring system;
the monitoring system comprises a network server end and an application end, wherein the network server end comprises an inversion and prediction module, and the application end comprises an alarm module and a display module;
the inversion and prediction module is used for obtaining a micro pipe gallery toxic and harmful gas leakage model base by utilizing a toxic and harmful gas leakage-diffusion numerical simulation calculation model and a deep learning algorithm of the micro pipe gallery; inputting the monitoring data of the sensing system into the micro pipe gallery toxic and harmful gas leakage model library according to the set time interval to obtain the position and the leakage amount of the toxic and harmful gas leakage source in the micro pipe gallery; the position and the leakage amount of the toxic and harmful gas leakage source obtained by the micro pipe gallery toxic and harmful gas leakage model library are used, the numerical simulation calculation model is used for carrying out real-time simulation calculation, display and alarm on the distribution situation of the concentration of the toxic and harmful gas in the micro pipe gallery, and/or carrying out prediction, display and early warning on the concentration distribution of the toxic and harmful gas in the micro pipe gallery within the future designated time, and the alarm and display information is output to the alarm module and the display module;
the alarm module is used for displaying alarm information;
the display module is used for displaying the calculation result.
Further, the perception system comprises a gas sensor and a gas demodulator.
Further, the inversion and prediction module calculates and predicts the gas concentration of the micro pipe gallery by executing corresponding steps in the micro pipe gallery gas monitoring method based on simulation and deep learning.
According to the method, a micro pipe gallery toxic and harmful gas leakage model base is obtained by using a numerical simulation calculation and deep learning method, toxic and harmful gas monitoring data for the micro pipe gallery are used as input data, the position and leakage amount of gas leakage are obtained by using the micro pipe gallery toxic and harmful gas leakage model base, online real-time simulation calculation is carried out, the gas concentration distribution condition inside the micro pipe gallery is obtained, and gas leakage early warning is realized according to the condition.
The system can monitor various combustible toxic gases such as hydrogen sulfide, gas, carbon monoxide, carbon dioxide, sulfur dioxide, oxygen and the like which are common in the micro pipe gallery in real time, judge whether a toxic and harmful gas leakage source exists or not according to the monitored gas concentration data, position a pollution source, obtain the real-time gas concentration distribution in the whole pipe gallery after positioning, and alarm the abnormal condition of the exceeding concentration; the gas concentration distribution at a certain time in the future can be further predicted, and the abnormal condition of the exceeding concentration can be pre-warned.
In addition, the simulation calculation of the invention can be carried out on line in real time, thus carrying out real-time early warning and alarming aiming at abnormal index parameters, finding problems as soon as possible and carrying out targeted and effective monitoring on the micro pipe gallery, thereby ensuring the safety and reliability of the operation of the micro pipe gallery and filling the gap of monitoring the toxic and harmful gases of the micro pipe gallery.
Drawings
For a more complete understanding of the present invention, reference is now made to the following descriptions taken in conjunction with the accompanying drawing, in which:
fig. 1 shows the specific steps of the simulation and deep learning-based micro pipe gallery gas monitoring method of the present invention.
Fig. 2 is a schematic diagram of a simulation and deep learning based micro pipe gallery gas monitoring system of the present invention.
Detailed Description
For the purpose of illustrating the invention, its technical details and its practical application to thereby enable one of ordinary skill in the art to understand and practice the invention, reference will now be made in detail to the embodiments of the present invention with reference to the accompanying drawings. It is to be understood that the embodiments described herein are merely illustrative and explanatory of the invention and are not restrictive thereof.
The invention provides a micro pipe gallery gas monitoring method based on simulation and deep learning, which mainly comprises the following steps:
s01, establishing a toxic and harmful gas leakage-diffusion numerical simulation model of the micro pipe gallery:
the gas concentration equation does not consider the chemical reaction between the gases in the pipe gallery during the diffusion process, and is as follows:
where ρ is i Is as followsiDensity of seed gas, c i Is as followsiThe concentration of the seed gas is such that,
is as followsiVelocity of seed gas flow, D i Is the firstiDiffusion coefficient of seed gas, Q i Is the firstiThe source of leakage of the seed gas.
Since the air inside the micro pipe gallery is not basically circulated, it can be assumed that
Is 0, so the equation is simplified to
Step S02, assuming various leakage conditions, performing numerical simulation calculation by adopting the numerical simulation model in the step S01, calculating the conditions such as gas concentration distribution in the micro pipe gallery, and taking the simulation result as a training sample and a test sample of Deep Learning (Deep Learning) to obtain a micro pipe gallery toxic gas leakage model library, wherein the specific method comprises the following steps:
(1) Because the area containing cables and water accumulation pits in the micro pipe gallery belongs to the area which is easy to generate toxic and harmful gas leakage, the area is mainly divided into grids, the size of each grid can be 0.5m multiplied by 0.5m, and the gas in each grid is assumed to meet the assumption of equation (2);
(2) Any grid in the area is assumed to be a leakage source area of toxic and harmful gases, and the leakage quantity is assumed to be Q i (ii) a Will leak the quantity Q i Substituting into equation (2), and performing numerical simulation calculation to obtain a set of simulation calculation results; according to the method, multiple groups of simulation calculation results are obtained by assuming multiple leakage conditions;
(3) And identifying the positions and leakage amounts of the gas leakage points through a Deep Learning algorithm (Deep Learning) according to the obtained multiple groups of simulation results, so as to obtain a micro pipe gallery toxic and harmful gas leakage model library.
And S03, acquiring monitoring data of the content of the gas to be detected in the micro pipe gallery according to the set time step length.
In order to acquire monitoring data of the content of the gas to be detected in the micro pipe gallery, a gas sensor and a gas demodulator can be arranged in the micro pipe gallery and used for acquiring the content of the gas to be detected in the micro pipe gallery in real time and converting the acquired information into monitoring data which can be identified by a monitoring system; transmitting the monitoring data to the monitoring system by adopting a data transmission system; and reading the monitoring data according to the set time step.
Wherein, the type of gas sensor can set up according to the particular case of piping lane, for example, can include methane sensor, carbon monoxide sensor, oxygen sensor, carbon dioxide sensor, hydrogen sulfide sensor, sulfur dioxide sensor etc..
The data transmission can adopt a wired or wireless transmission mode commonly used in the field.
The time step can be automatically adjusted according to whether the numerical simulation result has abnormity.
And S04, inputting the monitoring data in the step S03 into the micro pipe gallery toxic and harmful gas leakage model library in the step S02 to obtain the position and the leakage amount of the toxic and harmful gas leakage source.
Step S05, inputting the position and the leakage amount of the leakage source obtained in the step S04 into the numerical simulation calculation model of leakage-diffusion of the toxic and harmful gas of the micro pipe gallery in the step S01, and performing simulation calculation by taking the monitoring data obtained in the step S03 as boundary conditions, wherein the simulation calculation specifically comprises the following steps:
(1) Inputting the position and the leakage amount of the leakage source obtained in the step S04 into the numerical simulation model in the step S01 to obtain the gas concentration distribution condition inside the micro pipe gallery at the current moment;
(2) And (4) inputting the position and the leakage amount of the leakage source obtained in the step (S04) into the numerical simulation calculation model in the step (S01), and obtaining the gas concentration distribution condition of the interior of the micro pipe rack at the future appointed time through numerical simulation calculation according to the preset appointed time, so as to realize the prediction of the gas concentration of the interior of the micro pipe rack at the future appointed time.
Step S06, display and alarm are carried out to the inside gas concentration distribution condition of miniature piping lane, and/or display and early warning are carried out to the gas concentration distribution in the inside future appointed time of miniature piping lane, specifically include:
(1) Outputting the calculation result of the gas concentration distribution condition in the micro pipe gallery at the current moment obtained in the step S05, displaying the calculation result, and alarming for dangerous conditions such as excessive gas concentration and the like according to the calculation result;
(2) And outputting the calculation result of the gas concentration distribution condition inside the micro pipe gallery at the specified time in the future, displaying the result of the calculation result, and early warning dangerous conditions such as overproof gas concentration and the like according to the calculation result.
The display mode of the result can adopt: (1) The cloud picture shows that the gas concentration distribution condition on the whole pipe gallery can be displayed, and the gas concentration distribution condition on a certain section of the pipe gallery can also be displayed by locally amplifying; (2) The curve shows, can show the gas concentration change curve of piping lane optional position, including the monitoring point position to and the optional position beyond the monitoring point.
The invention provides a micro pipe gallery gas monitoring system based on simulation and deep learning, which is shown in figure 2 in the specification and comprises a sensing system 100, a data transmission system 200 and a monitoring system 300.
The sensing system 100 is used for collecting the content of gas to be detected in the micro pipe gallery in real time, and converting collected information into data which can be identified by the monitoring system 300. The sensing system 100 comprises a gas sensor 101 and a gas demodulator 102; the type of gas sensor 101 may be set according to the specifics of the pipe lane, and may include, for example, a methane sensor, a carbon monoxide sensor, an oxygen sensor, a carbon dioxide sensor, a hydrogen sulfide sensor, a sulfur dioxide sensor, and the like. The gas sensor 101 and the gas demodulator 102 are installed inside the pipe gallery, the gas sensor 101 is in communication connection with the gas demodulator 102, and the gas demodulator 102 converts information collected by the gas sensor 101 into monitoring data which can be identified by the monitoring system 300.
The data transmission system 200 is used for transmitting the identifiable monitoring data obtained by the sensing system 100 to the monitoring system 300. The data transmission of the data transmission system 200 may adopt a wireless or wired transmission mode commonly used in the art; the data transmission system 200 may include network cables, optical fibers, routers, and the like.
The monitoring system 300 comprises a network server side and an application side, wherein the network server side comprises an inversion and prediction module 301, and the application side comprises an alarm module 302 and a display module 303.
The inversion and prediction module 301 is configured to obtain a micro pipe gallery toxic and harmful gas leakage model library by using a toxic and harmful gas leakage-diffusion numerical simulation calculation and a deep learning algorithm of the micro pipe gallery; inputting the monitoring data of the sensing system into a micro pipe gallery toxic and harmful gas leakage model library according to a set time interval to obtain a leakage source and a leakage position of toxic and harmful gas; the numerical simulation calculation model is used for carrying out real-time simulation calculation, display and alarm on the gas concentration distribution condition in the micro pipe gallery by utilizing the leakage source and the leakage position of the toxic and harmful gas obtained by the micro pipe gallery toxic and harmful gas leakage model library, and/or carrying out prediction, display and early warning on the gas concentration distribution in the micro pipe gallery within the future designated time, and the alarm and display information is output to the alarm module 302 and the display module 303; the alarm module 302 is used for displaying alarm information; the display module 303 is configured to display the calculation result in a display manner such as a cloud image or a curve.
The inversion and prediction module 301 calculates and predicts the gas concentration of the micro pipe gallery by executing the corresponding steps of the simulation and deep learning-based gas monitoring method for the micro pipe gallery.
Claims (9)
1. A micro pipe gallery gas monitoring method based on simulation and deep learning mainly comprises the following steps:
s01, establishing a toxic and harmful gas leakage-diffusion numerical simulation calculation model of the micro pipe gallery according to the physical characteristics of the micro pipe gallery;
s02, assuming the gas leakage conditions of various micro pipe galleries, and carrying out simulation calculation according to the numerical simulation calculation model in the step S01 to obtain the gas concentration distribution condition in the micro pipe gallery; the simulation result is used as a training sample and a testing sample for deep learning to obtain a micro pipe gallery toxic and harmful gas leakage model library;
s03, acquiring monitoring data of the content of the gas to be detected in the micro pipe gallery according to the set time step length;
s04, inputting the monitoring data in the step S03 into the micro pipe gallery toxic and harmful gas leakage model library in the step S02 to obtain the position and the leakage amount of a toxic and harmful gas leakage source;
s05, inputting the position and the leakage amount of the leakage source obtained in the step S04 into the numerical simulation model in the step S01, and performing simulation calculation by taking the monitoring data obtained in the step S03 as boundary conditions to obtain the real-time distribution condition of the gas concentration inside the micro pipe gallery and/or the gas concentration distribution condition inside the micro pipe gallery within a specified time in the future;
and S06, displaying and alarming the gas concentration distribution condition in the interior of the micro pipe gallery in real time, and/or displaying and early warning the gas concentration distribution in the interior of the micro pipe gallery in the future designated time.
2. The method of claim 1, wherein in step S02, the gas leakage of the plurality of micro tube lanes is assumed by: carrying out grid division on a region containing cables and a sump in the micro pipe gallery, wherein the size of each grid is 0.5m multiplied by 0.5m, and assuming different grids as leakage source positions of toxic and harmful gases and giving leakage amount; for each leakage case, a numerical simulation calculation was performed.
3. The method according to claim 1, wherein in step S03, the obtaining of the monitoring data of the content of the gas to be measured inside the micro pipe gallery comprises:
the method comprises the following steps that a gas sensor and a gas demodulator are arranged in a micro pipe gallery and used for collecting the content of gas to be detected in the micro pipe gallery in real time and converting collected information into monitoring data which can be identified by a monitoring system;
transmitting the monitoring data to the monitoring system by adopting a data transmission system;
and reading the monitoring data in the monitoring system according to the set time step.
4. The method of claim 3, wherein the gas sensor is of a type that is configured according to the specifications of the pipe rack, and comprises one or more of a methane sensor, a carbon monoxide sensor, an oxygen sensor, a carbon dioxide sensor, a hydrogen sulfide sensor, and a sulfur dioxide sensor.
5. The method according to claim 1, wherein in step S03, the time step is automatically adjusted according to whether there is an abnormality in the simulation result.
6. The method of claim 1, wherein in step S06, the result is displayed in a cloud and/or a curve; a global display and/or a partial magnified display.
7. A micro pipe gallery gas monitoring system based on simulation and deep learning comprises a sensing system, a data transmission system and a monitoring system; wherein,
the sensing system is used for collecting the content of the gas to be detected in the micro pipe gallery in real time and converting the collected information into monitoring data which can be identified by the monitoring system;
the data transmission system is used for transmitting the monitoring data obtained by the perception system to the monitoring system;
the monitoring system comprises a network server end and an application end, wherein the network server end comprises an inversion and prediction module, and the application end comprises an alarm module and a display module;
the inversion and prediction module is used for obtaining a micro pipe gallery toxic and harmful gas leakage model base by utilizing a toxic and harmful gas leakage-diffusion numerical simulation calculation model and a deep learning algorithm of the micro pipe gallery; inputting the monitoring data obtained by the monitoring system into the micro pipe gallery toxic and harmful gas leakage model library according to the set time interval to obtain the position and the leakage amount of the toxic and harmful gas in the micro pipe gallery; the position and the leakage amount of the leakage source obtained from the micro pipe gallery toxic and harmful gas leakage model library are used, the numerical calculation simulation model is adopted to perform real-time simulation calculation, display and alarm on the gas concentration distribution condition in the micro pipe gallery, and/or predict, display and early-warn the gas concentration distribution in the micro pipe gallery within the future designated time, and the alarm and display information is output to the alarm module and the display module;
the alarm module is used for displaying alarm information;
the display module is used for displaying the calculation result.
8. The system of claim 7, wherein the sensing system comprises a gas sensor and a gas demodulator.
9. The system of claim 7, wherein the inversion and prediction module calculates and predicts the micro-pipe gallery gas concentration by performing the corresponding steps of the simulation and deep learning based micro-pipe gallery gas monitoring method of any one of claims 1-6.
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