An infrared video monitoring method and system for fire alarm

Abstract

The application provides an infrared video monitoring method and system for fire alarm, comprising the following steps: obtaining a thermal infrared image of a specified scene, and determining the fire smoke concentration of the specified scene according to the thermal infrared image; on the basis of obtaining the thermal infrared image, continuously obtaining the thermal infrared image of the specified scene, and monitoring the change of the fire smoke concentration through real-time analysis; periodically and continuously obtaining the thermal infrared image and monitoring the fire smoke concentration, determining whether the fire smoke concentration exceeds a pre-set threshold according to the continuously obtained thermal infrared image and the change of the fire smoke concentration; in the case that there is obvious flame point, triggering the fire alarm, sending an alarm notice to relevant personnel, and recording relevant information; if there is only smoke without obvious flame point, sending a warning notice to relevant personnel to prompt potential fire risk.

Description

An infrared video monitoring method and system for fire alarm Technical Field

[0001] This invention relates to the field of fire alarm technology, and in particular to an infrared video monitoring method and system for fire alarm. Background Technology

[0002] Fire is a dangerous natural disaster that can cause casualties and property damage. Fire monitoring and alarm systems play a crucial role in the effective prevention and control of fires. Traditional fire monitoring methods mainly rely on devices such as smoke detectors and temperature detectors, but these devices have limitations in certain situations.

[0003] Chinese patent CN116311840A, "Fire Alarm Monitoring Method, Device, Equipment and Storage Medium", discloses a fire alarm monitoring method. However, this method has technical problems such as the high false alarm rate caused by identifying fire points in visible light images using image recognition technology, which is easily affected by interference information, and the delayed alarm caused by the difficulty in identifying the initial flame. No effective solution has been proposed yet. Summary of the Invention

[0004] In view of this, the present invention proposes a monitoring method, system and device for fire alarm, so as to at least solve the technical problems existing in the prior art that fire alarm is based on the identification of fire points in visible light images by image recognition technology, which is easily affected by interference information and leads to a high false alarm rate, and the early stage of flame is difficult to identify, resulting in delayed alarm.

[0005] The technical solution of this invention is implemented as follows: On one hand, this invention provides an infrared video monitoring method for fire alarm, comprising the following steps:

[0006] S1, acquire a thermal infrared image of a specified scene, and determine the fire smoke concentration of the specified scene based on the thermal infrared image;

[0007] S2, based on the acquired thermal infrared image, continuously acquire thermal infrared images of the specified scene, and monitor the changes in fire smoke concentration through real-time analysis;

[0008] S3, periodically and continuously acquires thermal infrared images and monitors fire smoke concentration, and determines whether the fire smoke concentration exceeds a preset threshold based on the continuously acquired thermal infrared images and changes in fire smoke concentration;

[0009] S4. When the fire smoke concentration exceeds the threshold, the fire and smoke situation in the specified scenario is analyzed by using a pre-set flame detection model and smoke detection model.

[0010] S5: If a visible flame is detected, a fire alarm is triggered, an alarm notification is sent to relevant personnel, and relevant information is recorded; if only smoke is present and there is no visible flame, a warning notification is sent to relevant personnel to alert them to potential fire risks.

[0011] Preferably, when the fire smoke concentration exceeds a threshold, the analysis of the flame and smoke conditions within the specified scenario using a pre-set flame detection model and smoke detection model includes:

[0012] A flame detection model is used to determine if there are obvious flame points; a smoke detection model is used to determine if there is smoke in the scene.

[0013] Preferably, when a clear flame point is determined, the fire intensity is further assessed and the fire level is determined based on the flame temperature and size, and the alarm level and priority of emergency response measures are adjusted according to the fire intensity level.

[0014] Preferably, when a clear flame point is identified, a smoke detection model is used to track and monitor the smoke concentration in real time to assess the degree of combustion and the spread of the fire.

[0015] Preferably, when a clear flame point is determined to exist, thermal infrared image analysis is used to calculate the flame area, temperature distribution, and flame spread rate, thereby assessing the fire's development trend and degree of danger.

[0016] Preferably, when a clear flame point is determined to exist, the shape and movement characteristics of the flame are tracked and analyzed to determine whether there are phenomena such as fire source spread or excessive fire spread, and further assess the development trend and risk of the fire.

[0017] Preferably, when a clear flame point is identified, the types and concentrations of combustible gases that may be involved in the fire are determined by analyzing the flame radiation spectrum and gas radiation characteristics, and relevant information is provided for fire emergency response.

[0018] On the other hand, the present invention also provides an infrared video monitoring system for fire alarm, the system comprising:

[0019] A thermal infrared image acquisition module is used to acquire thermal infrared images of a specified scene and determine the fire smoke concentration of the specified scene based on the thermal infrared images.

[0020] The smoke concentration monitoring module is used to continuously acquire thermal infrared images of the specified scene based on the acquired thermal infrared images, and to monitor changes in fire smoke concentration through real-time analysis.

[0021] The smoke concentration judgment module is used to periodically and continuously acquire thermal infrared images and monitor fire smoke concentration. Based on the continuously acquired thermal infrared images and changes in fire smoke concentration, it determines whether the fire smoke concentration exceeds a preset threshold.

[0022] The detection model analysis module is used to analyze the flame and smoke situation in the specified scenario by using a pre-set flame detection model and smoke detection model when the fire smoke concentration exceeds the threshold.

[0023] The fire situation determination module is used to trigger a fire alarm, send alarm notifications to relevant personnel, and record relevant information when there is a visible flame. If there is only smoke and no visible flame, it will issue a warning notification to relevant personnel to indicate the potential fire risk.

[0024] On the other hand, embodiments of the present invention also provide an apparatus comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program, when executed by the processor, implements the steps of the infrared video monitoring method for fire alarm.

[0025] On the other hand, embodiments of the present invention also provide a computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps of the infrared video monitoring method for fire alarm.

[0026] The infrared video monitoring method and system for fire alarm of the present invention has the following advantages over the prior art:

[0027] (1) By combining infrared thermal images and smoke concentration analysis, the occurrence of fire can be determined more accurately, avoiding false alarms or missed alarms;

[0028] (2) By continuously acquiring thermal infrared images and analyzing changes in fire smoke concentration in real time, fire risks can be monitored quickly and fire alarms or warnings can be triggered in a timely manner, thus improving the response speed to fires; (3) Through flame detection models, smoke detection models and other analysis methods, the development trend, degree of danger and possible types of combustible materials of the fire can be further assessed, providing more comprehensive information on the fire situation.

[0029] (4) In the case of smoke without obvious flames, the smoke detection model and other methods are used to indicate potential fire risks so that relevant personnel can take necessary safety measures in a timely manner.

[0030] (5) By introducing the analysis of flame radiation spectrum and gas radiation characteristics, the system can more comprehensively assess the type and spread of fire, thereby enhancing the system's detection capability and performance. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 is a flowchart of an infrared video monitoring method for fire alarm according to the present invention;

[0033] Figure 2 is a structural diagram of an infrared video monitoring system for fire alarm according to the present invention. Detailed Implementation

[0034] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0035] An infrared video monitoring method for fire alarm is provided, as shown in Figure 1, including the following steps:

[0036] S1, acquire a thermal infrared image of a specified scene, and determine the fire smoke concentration of the specified scene based on the thermal infrared image;

[0037] S2, based on the acquired thermal infrared image, continuously acquire thermal infrared images of the specified scene, and monitor the changes in fire smoke concentration through real-time analysis;

[0038] S3, periodically and continuously acquires thermal infrared images and monitors fire smoke concentration, and determines whether the fire smoke concentration exceeds a preset threshold based on the continuously acquired thermal infrared images and changes in fire smoke concentration;

[0039] S4. When the fire smoke concentration exceeds the threshold, the fire and smoke situation in the specified scenario is analyzed by using a pre-set flame detection model and smoke detection model.

[0040] S5: If a visible flame is detected, a fire alarm is triggered, an alarm notification is sent to relevant personnel, and relevant information is recorded; if only smoke is present and there is no visible flame, a warning notification is sent to relevant personnel to alert them to potential fire risks.

[0041] It should be noted that infrared video surveillance technology has broad application prospects in the field of fire monitoring. Infrared thermal imaging technology can detect and analyze the thermal infrared image information of the monitored scene to monitor temperature changes and fire conditions in real time. Through real-time acquisition and analysis of thermal infrared images, the concentration of smoke and the presence of flames can be effectively detected, and accurate fire alarm information can be provided, enabling early detection and timely response to fires.

[0042] However, existing infrared video monitoring methods still face some challenges in fire alarm systems. For example, how to accurately determine when the smoke concentration exceeds a threshold to trigger an alarm, how to analyze flame and smoke conditions using pre-set flame and smoke detection models, and how to distinguish between obvious flame points and situations where only smoke is present.

[0043] Therefore, a new infrared video monitoring method for fire alarm is needed to accurately and reliably determine the smoke concentration in a fire, enabling early detection and timely alarm of fires to protect the safety of people and property.

[0044] When the smoke concentration exceeds a threshold, the fire and smoke conditions within the specified scenario are analyzed using a pre-set flame detection model and a smoke detection model, including:

[0045] A flame detection model is used to determine if there are obvious flame points; a smoke detection model is used to determine if there is smoke in the scene.

[0046] It should be noted that the synergistic effect of flame detection models and smoke detection models can improve the accuracy and reliability of fire detection, ensuring timely and effective triggering of fire alarms and warning notifications, and providing important information for personnel to receive early warnings and evacuate.

[0047] If a clear flame is detected, the fire intensity is further assessed and the fire level is determined based on the flame temperature and size. The alarm level and the priority of emergency response measures are then adjusted according to the fire intensity level.

[0048] It should be noted that assessing the fire intensity and determining the fire level based on the temperature and size of the flames can guide the adjustment of alarm levels and emergency response measures. This allows for a reasonable match between fire sensitivity and resource allocation for different fire intensity levels, improving the effectiveness of fire emergency response and the ability to handle sudden fire events.

[0049] When a clear flame point is identified, a smoke detection model is used to track and monitor the smoke concentration in real time to assess the degree of fire combustion and the spread of the fire.

[0050] It should be noted that assessing the degree of fire combustion and the spread of fire based on real-time smoke concentration data helps to monitor the development of the fire in real time, providing important reference information to guide the decision-making and dispatch of fire rescue and emergency response work.

[0051] When a clear flame point is identified, thermal infrared image analysis is used to calculate the flame area, temperature distribution, and flame spread rate, thereby assessing the fire's development trend and degree of danger.

[0052] It should be noted that assessing the development trend and degree of danger of a fire is more dangerous and more severe if the fire covers a larger area, has a more uniform and higher temperature distribution, and spreads faster. These assessment results can provide valuable references for rescue operations and emergency decision-making.

[0053] If a clear flame point is identified, the shape and movement characteristics of the flame are tracked and analyzed to determine whether there is fire spread or excessive fire spread, and to further assess the development trend and risk of the fire.

[0054] It should be noted that preliminary assessments of the fire's development trend and risks, such as irregular flame patterns, rapid movement, and large spread, indicate a high risk and necessitate timely implementation of appropriate firefighting and rescue measures. These assessment results can provide crucial information for fire emergency decision-making and personnel evacuation.

[0055] When a clear flame point is identified, the types and concentrations of combustible gases that may be involved in the fire can be determined by analyzing the flame radiation spectrum and gas radiation characteristics, providing relevant information for fire emergency response.

[0056] It should be noted that while preliminary inferences about the types and concentration ranges of flammable gases involved in the fire are important for selecting appropriate extinguishing agents, developing emergency response plans, and ensuring personnel safety, it is important to note that due to the complexity of the fire environment and the mixed combustion of flammable gases, accurate determination of the types and concentrations of flammable gases still requires further experiments and tests. Therefore, in fire emergency response, it is also necessary to combine other data and on-site investigations to comprehensively assess the fire situation and take corresponding measures.

[0057] On the other hand, the present invention also provides an infrared video monitoring system for fire alarm, as shown in Figure 2, the system comprising:

[0058] A thermal infrared image acquisition module is used to acquire thermal infrared images of a specified scene and determine the fire smoke concentration of the specified scene based on the thermal infrared images.

[0059] The smoke concentration monitoring module is used to continuously acquire thermal infrared images of the specified scene based on the acquired thermal infrared images, and to monitor changes in fire smoke concentration through real-time analysis.

[0060] The smoke concentration judgment module is used to periodically and continuously acquire thermal infrared images and monitor fire smoke concentration. Based on the continuously acquired thermal infrared images and changes in fire smoke concentration, it determines whether the fire smoke concentration exceeds a preset threshold.

[0061] The detection model analysis module is used to analyze the flame and smoke situation in the specified scenario by using a pre-set flame detection model and smoke detection model when the fire smoke concentration exceeds the threshold.

[0062] The fire situation determination module is used to trigger a fire alarm, send alarm notifications to relevant personnel, and record relevant information when there is a visible flame. If there is only smoke and no visible flame, it will issue a warning notification to relevant personnel to indicate the potential fire risk.

[0063] On the other hand, embodiments of the present invention also provide an apparatus comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program, when executed by the processor, implements the steps of the infrared video monitoring method for fire alarm.

[0064] On the other hand, embodiments of the present invention also provide a computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps of the infrared video monitoring method for fire alarm.

[0065] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An infrared video monitoring method for fire alarm, characterized in that, Includes the following steps: S1. Acquire thermal infrared images of a specified scene and determine the fire smoke concentration of the specified scene based on the thermal infrared images; S2. Based on the acquired thermal infrared images, continuously acquire thermal infrared images of the specified scene and monitor changes in fire smoke concentration through real-time analysis; S3. Periodically and continuously acquire thermal infrared images and monitor fire smoke concentration, and determine whether the fire smoke concentration exceeds a preset threshold based on the continuously acquired thermal infrared images and changes in fire smoke concentration; S4. When the fire smoke concentration exceeds the threshold, analyze the flame and smoke situation in the specified scene using a preset flame detection model and smoke detection model; S5. If a clear flame point is detected, trigger a fire alarm, send an alarm notification to relevant personnel, and record relevant information; if only smoke exists without a clear flame point, issue a warning notification to relevant personnel to indicate potential fire risks.

2. The infrared video monitoring method for fire alarm as described in claim 1, characterized in that, When the smoke concentration exceeds the threshold, the fire and smoke conditions in the specified scenario are analyzed using a pre-set flame detection model and a smoke detection model, including: using the flame detection model to determine whether there are obvious flame points; and using the smoke detection model to determine whether there is smoke in the scenario.

3. The infrared video monitoring method for fire alarm as described in claim 1, characterized in that, If a clear flame is detected, the fire intensity is further assessed and the fire level is determined based on the flame temperature and size. The alarm level and the priority of emergency response measures are then adjusted according to the fire intensity level.

4. The infrared video monitoring method for fire alarm as described in claim 3, characterized in that, When a clear flame point is identified, a smoke detection model is used to track and monitor the smoke concentration in real time to assess the degree of fire combustion and the spread of the fire.

5. The infrared video monitoring method for fire alarm as described in claim 4, characterized in that, When a clear flame point is identified, thermal infrared image analysis is used to calculate the flame area, temperature distribution, and flame spread rate, thereby assessing the fire's development trend and degree of danger.

6. The infrared video monitoring method for fire alarm as described in claim 5, characterized in that, If a clear flame point is identified, the shape and movement characteristics of the flame are tracked and analyzed to determine whether there is fire source spread or excessive fire spread, and to further assess the development trend and risk of the fire.

7. The infrared video monitoring method for fire alarm as described in claim 6, characterized in that, When a clear flame point is identified, the type and concentration of combustible gases involved in the fire can be determined by analyzing the flame radiation spectrum and gas radiation characteristics, providing relevant information for fire emergency response.

8. An infrared video monitoring system for fire alarm, characterized in that, The system includes: a thermal infrared image acquisition module, used to acquire thermal infrared images of a specified scene and determine the fire smoke concentration of the specified scene based on the thermal infrared images; a smoke concentration monitoring module, used to continuously acquire thermal infrared images of the specified scene based on the acquired thermal infrared images, and monitor changes in fire smoke concentration through real-time analysis; a smoke concentration judgment module, used to periodically and continuously acquire thermal infrared images and monitor fire smoke concentration, and determine whether the fire smoke concentration exceeds a preset threshold based on the continuously acquired thermal infrared images and changes in fire smoke concentration; a detection model analysis module, used to analyze the flame and smoke situation in the specified scene using a preset flame detection model and smoke detection model when the fire smoke concentration exceeds the threshold; and a fire situation determination module, used to trigger a fire alarm, send alarm notifications to relevant personnel, and record relevant information when a clear flame point is determined to exist; and to issue a warning notification to relevant personnel when only smoke exists without a clear flame point, in order to indicate potential fire risks.

9. A device, characterized in that, The device includes: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program, when executed by the processor, implements the steps of the method as described in any one of claims 1-7.

10. A computer-readable storage medium, characterized in that, A computer program is stored on the computer-readable storage medium, which, when executed by a processor, implements the steps of the method as described in any one of claims 1-7.

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