CN118033064A - Early warning and monitoring method and system based on gas detector - Google Patents
Early warning and monitoring method and system based on gas detector Download PDFInfo
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Abstract
The invention relates to the field of information monitoring and risk early warning, and discloses an early warning monitoring method and system based on a gas detector.
Description
Technical Field
The invention relates to the field of information monitoring and risk early warning, in particular to an early warning monitoring method and system based on a gas detector.
Background
In large public places such as hotels and concert halls, because of the gas circulation requirements when a large number of people gather, gas circulation channels are often provided in the places, which connect a plurality of area spaces to assist in accelerating gas circulation between areas and to the outside by additional equipment.
However, such a setting mode also can cause that in special cases, the diffusion speed of risks is far higher than that of places without circulating assistance, such as leakage of the risk gas, and the leaked gas can circulate in a plurality of spaces rapidly, so that a large number of people in the places are threatened by a certain risk.
Disclosure of Invention
The invention aims to provide an early warning and monitoring method and system based on a gas detector, which are used for solving the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions:
An early warning monitoring method based on a gas detector comprises the following steps:
Twinning mapping of scenes and environments of a public monitoring area; acquiring a scene distribution model of a public monitoring area, and generating a twin space model based on the scene distribution model, wherein the twin space model is used for representing the environmental structure distribution of the public monitoring area;
Monitoring gas environment data of scene nodes in the area; acquiring gas component information of monitoring nodes through a plurality of gas sensors distributed in a public monitoring area, carrying out matching identification on risk gas, and carrying out point-to-point mapping on gas component data corresponding to the risk gas in a twin space model;
Simulating the environment fluidity of the gas object; acquiring gas flow direction information of corresponding point positions through a plurality of gas flow monitoring nodes distributed and arranged in a public monitoring area, and performing mobility simulation of gas flow in the public monitoring area in a twin space model based on the gas flow direction information so as to acquire a gas flow model;
Risk assessment and early warning of a gas object; and simulating the mobility diffusion of the risk gas in the time axis based on the gas mobility model, and carrying out safety judgment based on a preset warning limit area to generate a risk gas diffusion warning and output v.
As a further aspect of the invention: the guard limiting area comprises a channel guard area and a crowd guard area, the public monitoring area is provided with a plurality of airflow direction controllers, and an airflow channel containing the airflow direction controllers is an airflow regulation channel;
the crowd guard area is used for representing a crowd gathering area in the public monitoring area;
The channel guard area is used for representing an air flow channel area which is communicated with the personnel gathering area and is not provided with an air flow direction controller with the personnel gathering area.
As still further aspects of the invention: the step of simulating the mobility diffusion of the risk gas in the time axis based on the gas mobility model, and carrying out safety judgment based on a preset warning limit area to generate and output a risk gas diffusion warning specifically comprises the following steps:
simulation monitoring of gas flow risk; based on the gas fluidity model and the distribution condition of the risk gas in the gas fluidity model, simulating gas diffusion movement, and acquiring gas diffusion distribution states of a plurality of time nodes in a future preset time period;
Evading and guiding the flow diffusion risk; judging the gas diffusion distribution state through a preset channel guard area, and if the two are overlapped on a time axis, generating a circulation control signal and executing the circulation control signal, wherein the circulation control signal is used for controlling the airflow direction of the overlapped corresponding channel guard area to change the circulation direction;
assessment and warning of uncontrollable risk; and updating data of the twin space model of the public monitoring area after circulation regulation and control, reevaluating the gas diffusion distribution state, judging based on crowd warning areas, and generating and outputting a risk diffusion warning if the two are overlapped.
As still further aspects of the invention: the method also comprises a detention evaluation step of gas flow, and specifically comprises the following steps:
Continuously acquiring a plurality of groups of gas environment data at preset time intervals, and establishing a plurality of groups of diffusion intermediate states corresponding to the risk gases, wherein the diffusion intermediate states are used for representing the spatial position information of the risk gases;
performing flow diffusion simulation on the first group of gas environment data through an airflow flow model to obtain a continuous gas diffusion distribution state of the risk gas on a time axis;
Performing characteristic point value on the gas diffusion distribution state based on a preset time interval to obtain a plurality of groups of simulation results corresponding to the diffusion intermediate state;
Taking a difference value between the diffusion intermediate state and the gas diffusion distribution state and calculating the difference value of unit time to obtain a diffusion resistance coefficient of the risk gas, wherein the diffusion resistance coefficient is used for representing the hysteresis of the risk gas relative to the environment basic airflow in the diffusion process.
As still further aspects of the invention: the method also comprises the judgment of the expansibility of the gas flow, and specifically comprises the following steps:
Continuously acquiring a plurality of groups of gas environment data at preset time intervals, and acquiring the distribution density of corresponding risk gas on a diffusion path based on the gas environment data;
the density reduction per unit time is calculated based on the gas distribution densities of the plurality of time nodes to calculate the expansion coefficient of the corresponding risk gas according to the volume invariance principle, wherein the expansion coefficient is used for representing the expansion speed of the risk gas in the environment in the diffusion process.
The embodiment of the invention aims to provide an early warning and monitoring system based on a gas detector, which comprises the following components:
The twin mapping module is used for twin mapping of scenes and environments of the public monitoring area; acquiring a scene distribution model of a public monitoring area, and generating a twin space model based on the scene distribution model, wherein the twin space model is used for representing the environmental structure distribution of the public monitoring area;
The gas monitoring module is used for monitoring the gas environment data of scene nodes in the area; acquiring gas component information of monitoring nodes through a plurality of gas sensors distributed in a public monitoring area, carrying out matching identification on risk gas, and carrying out point-to-point mapping on gas component data corresponding to the risk gas in a twin space model;
the flow simulation module is used for simulating the environment fluidity of the gas object; acquiring gas flow direction information of corresponding point positions through a plurality of gas flow monitoring nodes distributed and arranged in a public monitoring area, and performing mobility simulation of gas flow in the public monitoring area in a twin space model based on the gas flow direction information so as to acquire a gas flow model;
The risk assessment module is used for risk assessment and early warning of the gas object; and simulating the mobility diffusion of the risk gas in the time axis based on the gas mobility model, and carrying out safety judgment based on a preset warning limit area to generate and output a risk gas diffusion warning.
As a further aspect of the invention: the guard limiting area comprises a channel guard area and a crowd guard area, the public monitoring area is provided with a plurality of airflow direction controllers, and an airflow channel containing the airflow direction controllers is an airflow regulation channel;
the crowd guard area is used for representing a crowd gathering area in the public monitoring area;
The channel guard area is used for representing an air flow channel area which is communicated with the personnel gathering area and is not provided with an air flow direction controller with the personnel gathering area.
As still further aspects of the invention: the risk assessment module specifically comprises:
the simulation monitoring unit is used for simulating and monitoring the gas flow risk; based on the gas fluidity model and the distribution condition of the risk gas in the gas fluidity model, simulating gas diffusion movement, and acquiring gas diffusion distribution states of a plurality of time nodes in a future preset time period;
The risk guiding unit is used for avoiding and guiding the flow diffusion risk; judging the gas diffusion distribution state through a preset channel guard area, and if the two are overlapped on a time axis, generating a circulation control signal and executing the circulation control signal, wherein the circulation control signal is used for controlling the airflow direction of the overlapped corresponding channel guard area to change the circulation direction;
The risk informing unit is used for evaluating and warning uncontrollable risks; and updating data of the twin space model of the public monitoring area after circulation regulation and control, reevaluating the gas diffusion distribution state, judging based on crowd warning areas, and generating and outputting a risk diffusion warning if the two are overlapped.
As still further aspects of the invention: the system also comprises a flow retention evaluation module, which specifically comprises:
the intermediate state monitoring unit is used for continuously acquiring a plurality of groups of gas environment data at preset time intervals, and establishing a diffusion intermediate state of a plurality of groups of corresponding risk gases, wherein the diffusion intermediate state is used for representing the spatial position information of the risk gases;
The diffusion simulation unit is used for performing flow diffusion simulation on the first group of gas environment data through the airflow flow model to obtain a gas diffusion distribution state of the risk gas in a continuous time axis;
the intermediate state simulation unit is used for carrying out characteristic point value on the gas diffusion distribution state based on a preset time interval to obtain a plurality of groups of simulation results corresponding to the diffusion intermediate state;
and the detention evaluation unit is used for taking a difference value between the diffusion intermediate state and the gas diffusion distribution state and calculating the difference value of unit time to obtain a diffusion resistance coefficient of the risk gas, wherein the diffusion resistance coefficient is used for representing the hysteresis of the risk gas relative to the basic air flow of the environment in the diffusion process.
As still further aspects of the invention: the device also comprises a diffusion expansibility evaluation module, which specifically comprises:
The continuous monitoring unit is used for continuously acquiring a plurality of groups of gas environment data at preset time intervals and acquiring the distribution density of the corresponding risk gas on the diffusion path based on the gas environment data;
And the expansibility evaluation unit is used for calculating density reduction in unit time based on gas distribution densities of a plurality of time nodes so as to calculate expansion coefficients of corresponding risk gases according to a volume invariance principle, wherein the expansion coefficients are used for representing expansion speeds of the risk gases in the environment in the diffusion process.
Compared with the prior art, the invention has the beneficial effects that: the real-time acquisition and updating of the sensing detection data are carried out on a plurality of points of the monitoring area, and the twin mapping synchronization is carried out, so that the risk gas identification and the diffusion simulation of the public monitoring area are realized, the automatic risk diffusion evaluation and judgment of the public place can be realized, the area which is affected by the risk gas and the area which is to be affected can be effectively known in time, and the risk notification is carried out.
Drawings
Fig. 1 is a flow chart diagram of an early warning and monitoring method based on a gas detector.
Fig. 2 is a flow chart of risk assessment and early warning of a gas object in an early warning monitoring method based on a gas detector.
FIG. 3 is a block diagram of a gas detector based early warning and monitoring system.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Specific implementations of the invention are described in detail below in connection with specific embodiments.
As shown in fig. 1, an early warning and monitoring system based on a gas detector according to an embodiment of the present invention includes the following steps:
S10, twinning mapping of scenes and environments of a public monitoring area; acquiring a scene distribution model of a public monitoring area, and generating a twin space model based on the scene distribution model, wherein the twin space model is used for representing the environmental structure distribution of the public monitoring area;
s20, monitoring gas environment data of scene nodes in the area; acquiring gas component information of monitoring nodes through a plurality of gas sensors distributed in a public monitoring area, carrying out matching identification on risk gas, and carrying out point-to-point mapping on gas component data corresponding to the risk gas in a twin space model;
s30, simulating the environment fluidity of the gas object; acquiring gas flow direction information of corresponding point positions through a plurality of gas flow monitoring nodes distributed and arranged in a public monitoring area, and performing mobility simulation of gas flow in the public monitoring area in a twin space model based on the gas flow direction information so as to acquire a gas flow model;
S40, risk assessment and early warning of the gas object; and simulating the mobility diffusion of the risk gas in the time axis based on the gas mobility model, and carrying out safety judgment based on a preset warning limit area to generate and output a risk gas diffusion warning.
In the embodiment, an early warning monitoring system based on a gas detector is provided, and by acquiring and updating sensing detection data of a plurality of points of a monitoring area in real time and synchronizing twin mapping, risk gas identification and diffusion simulation of a public monitoring area are realized, so that automatic risk diffusion evaluation and judgment of public places can be realized, and the areas where the risk gas is influenced and the risks are informed can be effectively known in time; in public places, because of the gas circulation requirement when a large amount of people gather, a standard gas circulation channel is often arranged in the places, the number of the circulation channels is large and a plurality of regional spaces can be connected, but the arrangement mode can also lead to the situation that the risk diffusion speed is far higher than that of the places without circulation assistance under special conditions, for example, when the risk gas (gas harmful to human bodies or dust, gas and the like which are easy to indirectly cause fire and explosion) leaks in a certain communicated space or a circulation pipeline, the risk gas can rapidly diffuse in the plurality of spaces through the circulation channel, and further the personnel in the plurality of spaces are injured and the like; in the prior art, for the occurrence of the situation, an effective supervision and control means is lacking, and most people are guided to evacuate after the visual influence of risk gas on symptom expression, and serious personnel and property loss is caused when the situation occurs actually; according to the method, simulation evaluation is carried out before risk gas diffusion by adopting a distributed abnormal gas monitoring and twinning gas circulation simulation mode, specifically, a twinning model is built according to spatial distribution and circulation channel distribution of a public monitoring area, a physical engine for simulating gas flow is endowed to the model, monitoring data of risk gas and gas flow rate conditions of all nodes are obtained through gas sensors distributed in the monitoring area, once the risk gas leaks at a certain place, mapping can be carried out in the twinning model, the flow conditions of the risk gas along with circulating gas in a period of time are simulated, and then whether personnel safety of a corresponding area is influenced is judged.
As another preferred embodiment of the present invention, the guard limiting area includes a channel guard area and a crowd guard area, the public monitoring area is provided with a plurality of airflow controllers, and the airflow channel including the airflow controllers is an airflow regulation channel;
the crowd guard area is used for representing a crowd gathering area in the public monitoring area;
The channel guard area is used for representing an air flow channel area which is communicated with the personnel gathering area and is not provided with an air flow direction controller with the personnel gathering area.
In this embodiment, the alert limiting area is further divided, and mainly includes a crowd alert area and a channel alert area, when the simulated risk gas directly reaches the crowd alert area, it indicates that the risk is diffused to the area and cannot be effectively controlled, and people in the corresponding space of the crowd alert area should be timely evacuated; the channel guard area is a circulation channel positioned in front of the crowd guard area in the air flow direction, and particularly a circulation channel provided with an air flow direction controller (namely, a circulation channel internally provided with an air flow circulation fan and the like and capable of realizing air flow direction change), when the risk air is diffused into the area, the circulation channel can be controlled by controlling the air flow circulation change, so that the crowd guard area connected with the channel guard area below the air flow direction can avoid the diffusion risk through the circulation change.
As shown in fig. 2, as another preferred embodiment of the present invention, the steps of simulating the mobility diffusion of the risk gas in the time axis based on the gas mobility model, performing safety judgment based on the preset guard limit area, generating and outputting a risk gas diffusion warning specifically include:
S41, simulating and monitoring gas flow risks; based on the gas fluidity model and the distribution condition of the risk gas in the gas fluidity model, simulating gas diffusion movement, and acquiring gas diffusion distribution states of a plurality of time nodes in a future preset time period;
s42, evading guide of flow diffusion risks; judging the gas diffusion distribution state through a preset channel guard area, and if the two are overlapped on a time axis, generating a circulation control signal and executing the circulation control signal, wherein the circulation control signal is used for controlling the airflow direction of the overlapped corresponding channel guard area to change the circulation direction;
S43, evaluating and warning uncontrollable risks; and updating data of the twin space model of the public monitoring area after circulation regulation and control, reevaluating the gas diffusion distribution state, judging based on crowd warning areas, and generating and outputting a risk diffusion warning if the two are overlapped.
In this embodiment, the step S40 is further described in a supplemental manner based on the crowd warning area and the channel warning area in the previous embodiment, specifically, in the executing process, when the simulation result is characterized as diffusing to the channel warning area, the flow direction of the risk gas can be controlled by generating the circulation regulation signal, and the risk gas is circulated to the unmanned space to perform the sealing process under the allowable condition, after the regulation and control are executed, the re-simulation is performed, and if the simulation result is still characterized as being inevitably entering into the crowd warning area where the monitoring display shows that the existence of a person exists, the corresponding risk diffusion warning is generated, so that the personnel can be conveniently and timely evacuated in a coordinated manner.
As another preferred embodiment of the present invention, the method further comprises a step of evaluating the retention of the gas flow, specifically comprising:
Continuously acquiring a plurality of groups of gas environment data at preset time intervals, and establishing a plurality of groups of diffusion intermediate states corresponding to the risk gases, wherein the diffusion intermediate states are used for representing the spatial position information of the risk gases;
performing flow diffusion simulation on the first group of gas environment data through an airflow flow model to obtain a continuous gas diffusion distribution state of the risk gas on a time axis;
Performing characteristic point value on the gas diffusion distribution state based on a preset time interval to obtain a plurality of groups of simulation results corresponding to the diffusion intermediate state;
Taking a difference value between the diffusion intermediate state and the gas diffusion distribution state and calculating the difference value of unit time to obtain a diffusion resistance coefficient of the risk gas, wherein the diffusion resistance coefficient is used for representing the hysteresis of the risk gas relative to the environment basic airflow in the diffusion process.
In this embodiment, for different types of gases (or smoke, etc.), which are different along with the fluidity of the air, the coefficient of diffusion resistance as defined herein may be simply referred to as "friction resistance" in the process of flowing the air, that is, the diffusion resistance coefficient of smoke, or part of macromolecular gases, during the process of diffusing along with the air flow, the diffusion speed of the smoke, or part of macromolecular gases, is significantly smaller than the flow speed of the ambient air flow, so that a certain hysteresis is generated in the accumulation of time, which is referred to herein as the diffusion resistance coefficient, and the accuracy of simulation can be improved by using the diffusion resistance coefficient in the twin space model.
As another preferred embodiment of the present invention, the method further comprises judging the expansibility of the gas flow, specifically comprising:
Continuously acquiring a plurality of groups of gas environment data at preset time intervals, and acquiring the distribution density of corresponding risk gas on a diffusion path based on the gas environment data;
the density reduction per unit time is calculated based on the gas distribution densities of the plurality of time nodes to calculate the expansion coefficient of the corresponding risk gas according to the volume invariance principle, wherein the expansion coefficient is used for representing the expansion speed of the risk gas in the environment in the diffusion process.
In this embodiment, a judging process of the expansion coefficient of the gas flow is also supplemented, which is used for the twin space model to further improve the accuracy of the simulated diffusion, the space area occupied by the multiple gases or multiple liquids in the mixing process is not relatively unchanged, but the gas or liquid in a larger space is uncontrollably diffused and flowed all around, so that the mixing ratio is increased along with the diffusion, and in the scene of the application, the volume of the polluted gas flow is increased, so that the diffusion degree of the volume can be judged through the density of the risk gas at the node to optimize the simulation result.
As shown in fig. 3, the present invention further provides a gas detector-based early warning and monitoring system, which includes:
The twinning mapping module 100 is used for twinning mapping of scenes and environments of the public monitoring area; acquiring a scene distribution model of a public monitoring area, and generating a twin space model based on the scene distribution model, wherein the twin space model is used for representing the environmental structure distribution of the public monitoring area;
The gas monitoring module 200 is used for monitoring the gas environment data of scene nodes in the area; acquiring gas component information of monitoring nodes through a plurality of gas sensors distributed in a public monitoring area, carrying out matching identification on risk gas, and carrying out point-to-point mapping on gas component data corresponding to the risk gas in a twin space model;
A flow simulation module 300 for environmental mobility simulation of a gas object; acquiring gas flow direction information of corresponding point positions through a plurality of gas flow monitoring nodes distributed and arranged in a public monitoring area, and performing mobility simulation of gas flow in the public monitoring area in a twin space model based on the gas flow direction information so as to acquire a gas flow model;
The risk assessment module 400 is used for risk assessment and early warning of the gas object; and simulating the mobility diffusion of the risk gas in the time axis based on the gas mobility model, and carrying out safety judgment based on a preset warning limit area to generate and output a risk gas diffusion warning.
As another preferred embodiment of the present invention, the guard limiting area includes a channel guard area and a crowd guard area, the public monitoring area is provided with a plurality of airflow controllers, and the airflow channel including the airflow controllers is an airflow regulation channel;
the crowd guard area is used for representing a crowd gathering area in the public monitoring area;
The channel guard area is used for representing an air flow channel area which is communicated with the personnel gathering area and is not provided with an air flow direction controller with the personnel gathering area.
As another preferred embodiment of the present invention, the risk assessment module specifically includes:
the simulation monitoring unit is used for simulating and monitoring the gas flow risk; based on the gas fluidity model and the distribution condition of the risk gas in the gas fluidity model, simulating gas diffusion movement, and acquiring gas diffusion distribution states of a plurality of time nodes in a future preset time period;
The risk guiding unit is used for avoiding and guiding the flow diffusion risk; judging the gas diffusion distribution state through a preset channel guard area, and if the two are overlapped on a time axis, generating a circulation control signal and executing the circulation control signal, wherein the circulation control signal is used for controlling the airflow direction of the overlapped corresponding channel guard area to change the circulation direction;
The risk informing unit is used for evaluating and warning uncontrollable risks; and updating data of the twin space model of the public monitoring area after circulation regulation and control, reevaluating the gas diffusion distribution state, judging based on crowd warning areas, and generating and outputting a risk diffusion warning if the two are overlapped.
As another preferred embodiment of the present invention, the present invention further includes a flow retention evaluation module, specifically including:
the intermediate state monitoring unit is used for continuously acquiring a plurality of groups of gas environment data at preset time intervals, and establishing a diffusion intermediate state of a plurality of groups of corresponding risk gases, wherein the diffusion intermediate state is used for representing the spatial position information of the risk gases;
The diffusion simulation unit is used for performing flow diffusion simulation on the first group of gas environment data through the airflow flow model to obtain a gas diffusion distribution state of the risk gas in a continuous time axis;
the intermediate state simulation unit is used for carrying out characteristic point value on the gas diffusion distribution state based on a preset time interval to obtain a plurality of groups of simulation results corresponding to the diffusion intermediate state;
and the detention evaluation unit is used for taking a difference value between the diffusion intermediate state and the gas diffusion distribution state and calculating the difference value of unit time to obtain a diffusion resistance coefficient of the risk gas, wherein the diffusion resistance coefficient is used for representing the hysteresis of the risk gas relative to the basic air flow of the environment in the diffusion process.
As another preferred embodiment of the present invention, the present invention further includes a diffusion expansibility evaluation module, specifically including:
The continuous monitoring unit is used for continuously acquiring a plurality of groups of gas environment data at preset time intervals and acquiring the distribution density of the corresponding risk gas on the diffusion path based on the gas environment data;
And the expansibility evaluation unit is used for calculating density reduction in unit time based on gas distribution densities of a plurality of time nodes so as to calculate expansion coefficients of corresponding risk gases according to a volume invariance principle, wherein the expansion coefficients are used for representing expansion speeds of the risk gases in the environment in the diffusion process.
Other embodiments of the present disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure. This application is intended to cover any adaptations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It is to be understood that the present disclosure is not limited to the precise arrangements and instrumentalities shown in the drawings, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (10)
1. The early warning and monitoring method based on the gas detector is characterized by comprising the following steps of:
Twinning mapping of scenes and environments of a public monitoring area; acquiring a scene distribution model of a public monitoring area, and generating a twin space model based on the scene distribution model, wherein the twin space model is used for representing the environmental structure distribution of the public monitoring area;
Monitoring gas environment data of scene nodes in the area; acquiring gas component information of monitoring nodes through a plurality of gas sensors distributed in a public monitoring area, carrying out matching identification on risk gas, and carrying out point-to-point mapping on gas component data corresponding to the risk gas in a twin space model;
Simulating the environment fluidity of the gas object; acquiring gas flow direction information of corresponding point positions through a plurality of gas flow monitoring nodes distributed and arranged in a public monitoring area, and performing mobility simulation of gas flow in the public monitoring area in a twin space model based on the gas flow direction information so as to acquire a gas flow model;
Risk assessment and early warning of a gas object; and simulating the mobility diffusion of the risk gas in the time axis based on the gas mobility model, and carrying out safety judgment based on a preset warning limit area to generate and output a risk gas diffusion warning.
2. The method for early warning and monitoring based on a gas detector according to claim 1, wherein the warning limiting area comprises a channel warning area and a crowd warning area, the public monitoring area is provided with a plurality of airflow controllers, and an airflow channel comprising the airflow controllers is an airflow regulation channel;
the crowd guard area is used for representing a crowd gathering area in the public monitoring area;
The channel guard area is used for representing an air flow channel area which is communicated with the personnel gathering area and is not provided with an air flow direction controller with the personnel gathering area.
3. The method for early warning and monitoring based on a gas detector according to claim 2, wherein the step of simulating the mobility diffusion of the risk gas in the time axis based on the gas mobility model, performing safety judgment based on a preset warning limit area, generating and outputting a risk gas diffusion warning specifically comprises:
simulation monitoring of gas flow risk; based on the gas fluidity model and the distribution condition of the risk gas in the gas fluidity model, simulating gas diffusion movement, and acquiring gas diffusion distribution states of a plurality of time nodes in a future preset time period;
Evading and guiding the flow diffusion risk; judging the gas diffusion distribution state through a preset channel guard area, and if the two are overlapped on a time axis, generating a circulation control signal and executing the circulation control signal, wherein the circulation control signal is used for controlling the airflow direction of the overlapped corresponding channel guard area to change the circulation direction;
assessment and warning of uncontrollable risk; and updating data of the twin space model of the public monitoring area after circulation regulation and control, reevaluating the gas diffusion distribution state, judging based on crowd warning areas, and generating and outputting a risk diffusion warning if the two are overlapped.
4. The gas detector-based early warning and monitoring method according to claim 1, further comprising a detention evaluation step of gas flow, specifically comprising:
Continuously acquiring a plurality of groups of gas environment data at preset time intervals, and establishing a plurality of groups of diffusion intermediate states corresponding to the risk gases, wherein the diffusion intermediate states are used for representing the spatial position information of the risk gases;
performing flow diffusion simulation on the first group of gas environment data through an airflow flow model to obtain a continuous gas diffusion distribution state of the risk gas on a time axis;
Performing characteristic point value on the gas diffusion distribution state based on a preset time interval to obtain a plurality of groups of simulation results corresponding to the diffusion intermediate state;
Taking a difference value between the diffusion intermediate state and the gas diffusion distribution state and calculating the difference value of unit time to obtain a diffusion resistance coefficient of the risk gas, wherein the diffusion resistance coefficient is used for representing the hysteresis of the risk gas relative to the environment basic airflow in the diffusion process.
5. The method for early warning and monitoring based on a gas detector according to claim 4, further comprising judging the expansibility of the gas flow, and specifically comprising:
Continuously acquiring a plurality of groups of gas environment data at preset time intervals, and acquiring the distribution density of corresponding risk gas on a diffusion path based on the gas environment data;
the density reduction per unit time is calculated based on the gas distribution densities of the plurality of time nodes to calculate the expansion coefficient of the corresponding risk gas according to the volume invariance principle, wherein the expansion coefficient is used for representing the expansion speed of the risk gas in the environment in the diffusion process.
6. An early warning monitoring system based on a gas detector, comprising:
The twin mapping module is used for twin mapping of scenes and environments of the public monitoring area; acquiring a scene distribution model of a public monitoring area, and generating a twin space model based on the scene distribution model, wherein the twin space model is used for representing the environmental structure distribution of the public monitoring area;
The gas monitoring module is used for monitoring the gas environment data of scene nodes in the area; acquiring gas component information of monitoring nodes through a plurality of gas sensors distributed in a public monitoring area, carrying out matching identification on risk gas, and carrying out point-to-point mapping on gas component data corresponding to the risk gas in a twin space model;
the flow simulation module is used for simulating the environment fluidity of the gas object; acquiring gas flow direction information of corresponding point positions through a plurality of gas flow monitoring nodes distributed and arranged in a public monitoring area, and performing mobility simulation of gas flow in the public monitoring area in a twin space model based on the gas flow direction information so as to acquire a gas flow model;
The risk assessment module is used for risk assessment and early warning of the gas object; and simulating the mobility diffusion of the risk gas in the time axis based on the gas mobility model, and carrying out safety judgment based on a preset warning limit area to generate and output a risk gas diffusion warning.
7. The gas detector-based early warning and monitoring system according to claim 6, wherein the warning limiting area comprises a channel warning area and a crowd warning area, the public monitoring area is provided with a plurality of airflow controllers, and an airflow channel comprising the airflow controllers is an airflow regulation channel;
the crowd guard area is used for representing a crowd gathering area in the public monitoring area;
The channel guard area is used for representing an air flow channel area which is communicated with the personnel gathering area and is not provided with an air flow direction controller with the personnel gathering area.
8. The gas detector-based early warning and monitoring system of claim 7, wherein the risk assessment module specifically comprises:
the simulation monitoring unit is used for simulating and monitoring the gas flow risk; based on the gas fluidity model and the distribution condition of the risk gas in the gas fluidity model, simulating gas diffusion movement, and acquiring gas diffusion distribution states of a plurality of time nodes in a future preset time period;
The risk guiding unit is used for avoiding and guiding the flow diffusion risk; judging the gas diffusion distribution state through a preset channel guard area, and if the two are overlapped on a time axis, generating a circulation control signal and executing the circulation control signal, wherein the circulation control signal is used for controlling the airflow direction of the overlapped corresponding channel guard area to change the circulation direction;
The risk informing unit is used for evaluating and warning uncontrollable risks; and updating data of the twin space model of the public monitoring area after circulation regulation and control, reevaluating the gas diffusion distribution state, judging based on crowd warning areas, and generating and outputting a risk diffusion warning if the two are overlapped.
9. The gas detector-based early warning and monitoring system of claim 6, further comprising a flow retention assessment module, comprising:
the intermediate state monitoring unit is used for continuously acquiring a plurality of groups of gas environment data at preset time intervals, and establishing a diffusion intermediate state of a plurality of groups of corresponding risk gases, wherein the diffusion intermediate state is used for representing the spatial position information of the risk gases;
The diffusion simulation unit is used for performing flow diffusion simulation on the first group of gas environment data through the airflow flow model to obtain a gas diffusion distribution state of the risk gas in a continuous time axis;
the intermediate state simulation unit is used for carrying out characteristic point value on the gas diffusion distribution state based on a preset time interval to obtain a plurality of groups of simulation results corresponding to the diffusion intermediate state;
and the detention evaluation unit is used for taking a difference value between the diffusion intermediate state and the gas diffusion distribution state and calculating the difference value of unit time to obtain a diffusion resistance coefficient of the risk gas, wherein the diffusion resistance coefficient is used for representing the hysteresis of the risk gas relative to the basic air flow of the environment in the diffusion process.
10. The gas detector-based early warning and monitoring system of claim 9, further comprising a diffusion expansibility evaluation module, comprising:
The continuous monitoring unit is used for continuously acquiring a plurality of groups of gas environment data at preset time intervals and acquiring the distribution density of the corresponding risk gas on the diffusion path based on the gas environment data;
And the expansibility evaluation unit is used for calculating density reduction in unit time based on gas distribution densities of a plurality of time nodes so as to calculate expansion coefficients of corresponding risk gases according to a volume invariance principle, wherein the expansion coefficients are used for representing expansion speeds of the risk gases in the environment in the diffusion process.
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