CN117315873A - Infrared video monitoring method and system for fire alarm - Google Patents
Infrared video monitoring method and system for fire alarm Download PDFInfo
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- 238000013468 resource allocation Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3504—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
- G01N25/22—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity on combustion or catalytic oxidation, e.g. of components of gas mixtures
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/12—Actuation by presence of radiation or particles, e.g. of infrared radiation or of ions
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/12—Actuation by presence of radiation or particles, e.g. of infrared radiation or of ions
- G08B17/125—Actuation by presence of radiation or particles, e.g. of infrared radiation or of ions by using a video camera to detect fire or smoke
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Abstract
The invention provides an infrared video monitoring method and system for fire alarm, comprising the following steps: acquiring a thermal infrared image of a specified scene, and determining the fire smoke concentration of the specified scene according to the thermal infrared image; continuously acquiring the thermal infrared image of the specified scene on the basis of acquiring the thermal infrared image, and monitoring the change of the concentration of fire smoke through real-time analysis; continuously acquiring a thermal infrared image and monitoring the concentration of fire smoke at regular intervals, and judging whether the concentration of the fire smoke exceeds a preset threshold value according to the continuously acquired thermal infrared image and the change of the concentration of the fire smoke; triggering fire alarm under the condition that obvious flame points exist, sending alarm notification to related personnel, and recording related information; if only smoke exists and no obvious flame point exists, warning notification is sent to related personnel to prompt potential fire risks.
Description
Technical Field
The invention relates to the technical field of fire alarm, in particular to an infrared video monitoring method and system for fire alarm.
Background
Fire is a dangerous natural disaster that can cause casualties and property damage. In order to effectively prevent and control fire, fire monitoring and alarm systems play a vital role. Conventional fire monitoring methods mainly rely on smoke detectors, temperature detectors and other devices, but these devices have certain limitations in certain situations.
Chinese patent CN116311840A discloses a fire alarm monitoring method, a fire alarm monitoring device, fire alarm equipment and a fire alarm storage medium, and aims at solving the technical problems that fire points in visible light images are identified by an image identification technology to carry out fire alarm, the false alarm rate is high due to the influence of interference information, and delay alarm is caused due to the fact that the early stage of flame is not easy to identify, so that an effective solution is not proposed at present.
Disclosure of Invention
In view of the above, the invention provides a method, a system and a device for monitoring fire alarm, which at least solve the technical problems that fire alarm is performed by identifying fire points in visible light images through an image identification technology, false alarm rate is high due to the influence of interference information, and delay alarm is caused by difficult identification in the initial stage of flame in the prior art.
The technical scheme of the invention is realized as follows: in one aspect, the invention provides an infrared video monitoring method for fire alarm, comprising the following steps:
s1, acquiring a thermal infrared image of a specified scene, and determining the fire smoke concentration of the specified scene according to the thermal infrared image;
s2, continuously acquiring the thermal infrared image of the specified scene on the basis of acquiring the thermal infrared image, and monitoring the change of the concentration of the fire smoke through real-time analysis;
s3, regularly and continuously acquiring a thermal infrared image and monitoring the concentration of fire smoke, and judging whether the concentration of the fire smoke exceeds a preset threshold value according to the continuously acquired thermal infrared image and the change of the concentration of the fire smoke;
s4, when the fire smoke concentration exceeds a threshold value, analyzing the flame and smoke conditions in the appointed scene through a preset flame detection model and a preset smoke detection model;
s5, triggering fire alarm under the condition that obvious flame points exist, sending alarm notification to related personnel, and recording related information; if only smoke exists and no obvious flame point exists, warning notification is sent to related personnel to prompt potential fire risks.
Preferably, when the fire smoke concentration exceeds the threshold value, analyzing the flame and smoke conditions in the specified scene through a preset flame detection model and a preset smoke detection model comprises:
judging whether obvious flame points exist or not by utilizing a flame detection model; and determining whether smoke exists in the scene by using a smoke detection model.
Preferably, in the case of judging that a significant flame point exists, further evaluating the fire and determining the fire level according to the flame temperature and the flame size, and adjusting the alarm level and the priority of the emergency response measures according to the fire level.
Preferably, in the case of judging that obvious flame points exist, the smoke concentration is tracked and monitored in real time through a smoke detection model so as to evaluate the combustion degree and the fire spreading condition of the fire.
Preferably, in the case of judging that an obvious flame point exists, the area, the temperature distribution and the spreading speed of the flame are calculated through thermal infrared image analysis, so that the development trend and the hazard degree of the flame are evaluated.
Preferably, under the condition that the existence of obvious flame points is judged, whether the phenomena of fire source diffusion or overfire diffusion and the like exist is judged by tracking and analyzing the form and the movement characteristics of the flame, so that the development trend and the risk of the fire are further evaluated.
Preferably, when the presence of a distinct flame point is judged, the type and concentration of combustible gas which can be involved in the fire are judged by analyzing the flame radiation spectrum and the gas radiation characteristics, and related information is provided for coping with the fire emergency treatment.
In another aspect, the present invention also provides an infrared video monitoring system for fire alarm, the system comprising:
the system comprises a thermal infrared image acquisition module, a fire disaster smoke concentration acquisition module and a fire disaster smoke detection module, wherein the thermal infrared image acquisition module is used for acquiring a thermal infrared image of a specified scene and determining the fire disaster smoke concentration of the specified scene according to the thermal infrared image;
the smoke concentration monitoring module is used for continuously acquiring the thermal infrared image of the specified scene on the basis of acquiring the thermal infrared image, and monitoring the change of the concentration of the fire smoke through real-time analysis;
the smoke concentration judging module is used for continuously acquiring the thermal infrared image and monitoring the fire smoke concentration at regular intervals and judging whether the fire smoke concentration exceeds a preset threshold value according to the continuously acquired thermal infrared image and the change of the fire smoke concentration;
the detection model analysis module is used for analyzing the flame and smoke conditions in the appointed scene through a preset flame detection model and a preset smoke detection model when the concentration of the fire smoke exceeds a threshold value;
the fire condition determining module is used for triggering fire alarm, sending alarm notification to related personnel and recording related information under the condition that obvious flame points exist; if only smoke exists and no obvious flame point exists, warning notification is sent to related personnel to prompt potential fire risks.
In another aspect, an embodiment of the present invention further provides an apparatus, including: a memory, a processor and a computer program stored on the memory and executable on the processor, which when executed by the processor, implements the steps of the infrared video monitoring method for fire alerting.
In another aspect, embodiments of the present invention also provide a computer-readable storage medium having a computer program stored thereon, which when executed by a processor, implements the steps of the infrared video monitoring method for fire alarm.
Compared with the prior art, the infrared video monitoring method and system for fire alarm have the following beneficial effects:
(1) The occurrence of fire can be more accurately judged through the analysis of the comprehensive infrared thermal image and the smoke concentration, so that false alarm or missing alarm is avoided;
(2) The method has the advantages that the thermal infrared image is continuously acquired, the change of the concentration of the fire smoke is analyzed in real time, the risk of the fire can be rapidly monitored, and the fire alarm or warning notification is timely triggered, so that the response speed of coping with the fire is improved; (3) Through a flame detection model, a smoke detection model and other analysis means, the development trend, the dangerous degree and the possible combustion substance types of the fire can be further evaluated, and more comprehensive fire situation information is provided;
(4) Under the condition that only smoke exists and no obvious flame point exists, a potential fire risk is prompted through a smoke detection model and other methods, so that relevant personnel can take necessary safety measures in time;
(5) By introducing analysis of flame radiation spectrum and gas radiation characteristics, the system can more comprehensively evaluate the type and spread of fire, and the detection capability and performance of the system are enhanced.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of an infrared video monitoring method for fire alarm of the present invention;
FIG. 2 is a block diagram of an infrared video monitoring system for fire alarm according to the present invention.
Detailed Description
The following description of the embodiments of the present invention will clearly and fully describe the technical aspects of the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, are intended to fall within the scope of the present invention.
There is provided an infrared video monitoring method for fire alarm, as shown in fig. 1, comprising the steps of:
s1, acquiring a thermal infrared image of a specified scene, and determining the fire smoke concentration of the specified scene according to the thermal infrared image;
s2, continuously acquiring the thermal infrared image of the specified scene on the basis of acquiring the thermal infrared image, and monitoring the change of the concentration of the fire smoke through real-time analysis;
s3, regularly and continuously acquiring a thermal infrared image and monitoring the concentration of fire smoke, and judging whether the concentration of the fire smoke exceeds a preset threshold value according to the continuously acquired thermal infrared image and the change of the concentration of the fire smoke;
s4, when the fire smoke concentration exceeds a threshold value, analyzing the flame and smoke conditions in the appointed scene through a preset flame detection model and a preset smoke detection model;
s5, triggering fire alarm under the condition that obvious flame points exist, sending alarm notification to related personnel, and recording related information; if only smoke exists and no obvious flame point exists, warning notification is sent to related personnel to prompt potential fire risks.
It should be noted that: the infrared video monitoring technology has a wide application prospect in the field of fire monitoring. The infrared thermal imaging technology can monitor the temperature change and the fire condition in the scene in real time by detecting and analyzing the thermal infrared image information of the monitored scene. Through the real-time acquisition and analysis of the thermal infrared image, the concentration of the smoke and the existence of flame of the fire disaster can be effectively detected, accurate fire disaster alarm information is provided, and early detection and timely response to the fire disaster are realized.
However, existing infrared video monitoring methods still present some challenges in terms of fire alerting. For example, how to accurately judge the exceeding of the threshold value of the fire smoke concentration to trigger an alarm, how to analyze the flame and smoke conditions by a preset flame detection model and smoke detection model, how to distinguish obvious flame points from the smoke-only conditions, and the like.
Therefore, a new infrared video monitoring method for fire alarm is needed, which can accurately and reliably judge the concentration of fire smoke, realize early detection of fire and alarm in time, so as to protect the safety of personnel and property.
When the fire smoke concentration exceeds a threshold value, analyzing the flame and smoke conditions in the specified scene through a preset flame detection model and a preset smoke detection model comprises:
judging whether obvious flame points exist or not by utilizing a flame detection model; and determining whether smoke exists in the scene by using a smoke detection model.
It should be noted that: through the synergistic effect of the flame detection model and the smoke detection model, the accuracy and the reliability of fire conditions can be improved, the timely and effective triggering of fire alarming and warning notification is ensured, and important information is provided for early warning and refuge of personnel.
And under the condition that the obvious flame point exists, further evaluating the fire according to the temperature and the size of the flame, determining the fire grade, and adjusting the alarm grade and the priority of emergency response measures according to the fire grade.
It should be noted that: the fire is evaluated according to the temperature and the size of the flame, and the fire grade is determined, so that the alarm grade of the alarm system and the priority of the emergency response measures are guided to be adjusted, reasonable matching of fire sensitivity and resource allocation aiming at different fire grades can be realized, and the effect of fire emergency response and the coping capability of fire emergency events are improved.
And under the condition that obvious flame points are judged to exist, the smoke concentration is tracked and monitored in real time through a smoke detection model so as to evaluate the combustion degree and the fire spreading condition of the fire.
It should be noted that: the fire burning degree and the fire spreading condition are evaluated based on the real-time smoke concentration data, so that the fire burning degree and the fire spreading condition are helpful to monitor the development situation of the fire in real time, and important reference information is provided to guide the decision and the scheduling of fire rescue and emergency response work.
Under the condition that obvious flame points are judged to exist, the area, the temperature distribution and the flame spreading speed of the flame are calculated through thermal infrared image analysis, so that the development trend and the hazard degree of the fire are estimated.
It should be noted that: the fire trend and the hazard degree are evaluated, the larger the area is, the temperature distribution is uniform and high, the fire spread speed is high, the higher the hazard degree is, the more serious the fire is developed, and the evaluation results can provide valuable references for rescue actions and emergency decisions.
Under the condition that obvious flame points are judged to exist, whether the phenomena of fire source diffusion or overfire diffusion and the like exist or not is judged by tracking and analyzing the form and the movement characteristics of the flame, and the development trend and the risk of the fire are further evaluated.
It should be noted that: the development trend and risk of the fire are primarily evaluated, if the flame is irregular in shape, rapid in movement, large in diffusion range and high in risk, corresponding fire extinguishing and rescue measures are needed to be adopted in time, and important information can be provided for fire emergency decision and personnel evacuation by the evaluation results.
When the obvious flame points are judged to exist, the type and the concentration of combustible gas which can be related to the fire are judged by analyzing the flame radiation frequency spectrum and the gas radiation characteristics, and related information is provided for coping with the fire emergency treatment.
It should be noted that: the preliminary deduction of the type and concentration range of the combustible gas involved in the fire is of great significance to the selection of proper extinguishing agents, the establishment of emergency treatment plans and the guarantee of personnel safety, however, attention is paid to the fact that due to the complexity of the fire environment and the mixed combustion of the combustible gas, further experiments and tests are still required for accurately judging the type and the concentration of the combustible gas, and therefore, in the fire emergency treatment, other data and field investigation are also required to be combined, the fire situation is comprehensively evaluated and corresponding measures are taken.
In another aspect, the present invention also provides an infrared video monitoring system for fire alarm, as shown in fig. 2, the system includes:
the system comprises a thermal infrared image acquisition module, a fire disaster smoke concentration acquisition module and a fire disaster smoke detection module, wherein the thermal infrared image acquisition module is used for acquiring a thermal infrared image of a specified scene and determining the fire disaster smoke concentration of the specified scene according to the thermal infrared image;
the smoke concentration monitoring module is used for continuously acquiring the thermal infrared image of the specified scene on the basis of acquiring the thermal infrared image, and monitoring the change of the concentration of the fire smoke through real-time analysis;
the smoke concentration judging module is used for continuously acquiring the thermal infrared image and monitoring the fire smoke concentration at regular intervals and judging whether the fire smoke concentration exceeds a preset threshold value according to the continuously acquired thermal infrared image and the change of the fire smoke concentration;
the detection model analysis module is used for analyzing the flame and smoke conditions in the appointed scene through a preset flame detection model and a preset smoke detection model when the concentration of the fire smoke exceeds a threshold value;
the fire condition determining module is used for triggering fire alarm, sending alarm notification to related personnel and recording related information under the condition that obvious flame points exist; if only smoke exists and no obvious flame point exists, warning notification is sent to related personnel to prompt potential fire risks.
In another aspect, an embodiment of the present invention further provides an apparatus, including: a memory, a processor and a computer program stored on the memory and executable on the processor, which when executed by the processor, implements the steps of the infrared video monitoring method for fire alerting.
In another aspect, embodiments of the present invention also provide a computer-readable storage medium having a computer program stored thereon, which when executed by a processor, implements the steps of the infrared video monitoring method for fire alarm.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (10)
1. An infrared video monitoring method for fire alarm is characterized by comprising the following steps:
s1, acquiring a thermal infrared image of a specified scene, and determining the fire smoke concentration of the specified scene according to the thermal infrared image;
s2, continuously acquiring the thermal infrared image of the specified scene on the basis of acquiring the thermal infrared image, and monitoring the change of the concentration of the fire smoke through real-time analysis;
s3, regularly and continuously acquiring a thermal infrared image and monitoring the concentration of fire smoke, and judging whether the concentration of the fire smoke exceeds a preset threshold value according to the continuously acquired thermal infrared image and the change of the concentration of the fire smoke;
s4, when the fire smoke concentration exceeds a threshold value, analyzing the flame and smoke conditions in the appointed scene through a preset flame detection model and a preset smoke detection model;
s5, triggering fire alarm under the condition that obvious flame points exist, sending alarm notification to related personnel, and recording related information; if only smoke exists and no obvious flame point exists, warning notification is sent to related personnel to prompt potential fire risks.
2. An infrared video monitoring method for fire alarm as defined in claim 1, wherein analyzing the flame and smoke conditions in the specified scene by a preset flame detection model and smoke detection model when the fire smoke concentration exceeds a threshold value comprises:
judging whether obvious flame points exist or not by utilizing a flame detection model; and determining whether smoke exists in the scene by using a smoke detection model.
3. An infrared video monitoring method for fire alarm as claimed in claim 1, characterized in that in case of judging the existence of obvious flame spots, the fire is further evaluated and fire level is determined according to the flame temperature and size, and the alarm level and the priority of emergency response measures are adjusted according to the fire level.
4. An infrared video monitoring method for fire alarm according to claim 3, wherein in case of judging that there is an obvious flame point, the smoke concentration is tracked and monitored in real time by a smoke detection model to evaluate the combustion degree and the fire spread condition of the fire.
5. The infrared video monitoring method for fire alarm according to claim 4, wherein in case of judging that an obvious flame point exists, the area of flame, temperature distribution and flame spreading speed are calculated by thermal infrared image analysis, thereby evaluating the development trend and the hazard level of the fire.
6. The infrared video monitoring method for fire alarm according to claim 5, wherein in case of judging that obvious flame points exist, judging whether fire source diffusion or overfire diffusion and other phenomena exist or not by tracking and analyzing the form and the movement characteristics of the flame, and further evaluating the development trend and risk of the fire.
7. An infrared video monitoring method for fire alarm as defined in claim 6, wherein in case of judging that there is an obvious flame point, by analyzing the flame radiation spectrum and the gas radiation characteristics, the type and concentration of combustible gas which can be involved in the fire are judged, and the related information is provided for coping with the fire emergency treatment.
8. An infrared video monitoring system for fire alerting, the system comprising:
the system comprises a thermal infrared image acquisition module, a fire disaster smoke concentration acquisition module and a fire disaster smoke detection module, wherein the thermal infrared image acquisition module is used for acquiring a thermal infrared image of a specified scene and determining the fire disaster smoke concentration of the specified scene according to the thermal infrared image;
the smoke concentration monitoring module is used for continuously acquiring the thermal infrared image of the specified scene on the basis of acquiring the thermal infrared image, and monitoring the change of the concentration of the fire smoke through real-time analysis;
the smoke concentration judging module is used for continuously acquiring the thermal infrared image and monitoring the fire smoke concentration at regular intervals and judging whether the fire smoke concentration exceeds a preset threshold value according to the continuously acquired thermal infrared image and the change of the fire smoke concentration;
the detection model analysis module is used for analyzing the flame and smoke conditions in the appointed scene through a preset flame detection model and a preset smoke detection model when the concentration of the fire smoke exceeds a threshold value;
the fire condition determining module is used for triggering fire alarm, sending alarm notification to related personnel and recording related information under the condition that obvious flame points exist; if only smoke exists and no obvious flame point exists, warning notification is sent to related personnel to prompt potential fire risks.
9. An apparatus, the apparatus comprising: memory, a processor and a computer program stored on the memory and executable on the processor, which when executed by the processor performs the steps of the method according to any of claims 1-7.
10. A computer readable storage medium, characterized in that the computer readable storage medium has stored thereon a computer program which, when executed by a processor, implements the steps of the method according to any of claims 1-7.
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| CN202311222656.3A CN117315873A (en) | 2023-09-19 | 2023-09-19 | Infrared video monitoring method and system for fire alarm |
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| CN202311222656.3A CN117315873A (en) | 2023-09-19 | 2023-09-19 | Infrared video monitoring method and system for fire alarm |
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