A very early fire monitoring system

Abstract

The invention discloses a very early fire monitoring system, and relates to the technical field of fire monitoring. The invention monitors the smoke in a chemical workshop to be monitored, and when the smoke concentration is abnormal, monitors the combustible gas concentration, oxygen and air temperature in the chemical workshop to be monitored, analyzes the influence of the ventilation condition on oxygen and the influence of the equipment operating temperature on the air temperature in the chemical workshop to be monitored, and then analyzes the danger level in the chemical workshop to be monitored, thereby realizing intelligent and automatic monitoring of very early fires in the chemical workshop, greatly improving the accuracy of very early fire monitoring and early warning in the chemical workshop, effectively reducing the spread of subsequent fires, and providing a reference for the implementation of subsequent fire prevention measures in the chemical workshop, thereby effectively reducing the property loss caused by the fire in the chemical workshop, and greatly improving the safety of personnel in the chemical workshop.

Description

Technical Field

[0001] The present invention relates to the technical field of fire monitoring, and in particular to a very early stage fire monitoring system. Background Art

[0002] Chemical workshops usually store and process flammable and explosive gases. Once these gases leak or are improperly handled, they can easily cause fires and explosions. Therefore, it is necessary to monitor and warn of very early fires in chemical workshops to provide effective reminders and prevention for the control of subsequent fires.

[0003] The current technology mainly installs fire detectors in chemical workshops, and monitors the very early fires in chemical workshops through fire detectors. It does not monitor the combustible gas concentration, oxygen and air temperature in the chemical workshop, and thus cannot accurately judge the combustion conditions and combustion conditions in the chemical workshop, and thus cannot provide a reliable reference for the subsequent early warning of fires in the chemical workshop, reducing the accuracy of the very early fire monitoring and early warning. On the other hand, it does not monitor the ventilation conditions in the chemical workshop, and thus cannot understand the oxygen fluidity and oxygen content during combustion in the chemical workshop, and does not monitor the operating temperature of the equipment in the chemical workshop, and thus cannot reflect the impact of the equipment operating temperature on the air temperature, and thus cannot provide reliable data for the subsequent analysis of the combustion temperature of the combustible gas, reducing the accuracy of the very early fire analysis in the chemical workshop, and also affects the implementation of subsequent fire prevention measures in the chemical workshop, and cannot avoid the economic losses caused by the fire, and also poses a threat to the life safety of personnel. Summary of the invention

[0004] In view of the above-mentioned technical deficiencies, an object of the present invention is to provide a very early fire monitoring system.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solution: The present invention provides a very early fire monitoring system, comprising:

[0006] The gas monitoring module is used to set up various monitoring points in the chemical workshop to be monitored, set up various monitoring time points according to preset time intervals, and then collect the smoke concentration corresponding to each monitoring point in the chemical workshop to be monitored at each monitoring time point, thereby determining the smoke state corresponding to the chemical workshop to be monitored;

[0007] The environment collection module is used to collect the types of combustible gases, the concentrations of the combustible gases, the oxygen concentration and the air temperature corresponding to the monitoring points in the chemical workshop to be monitored at each monitoring time point when the smoke state corresponding to the chemical workshop to be monitored is in an abnormal state;

[0008] An information acquisition module is used to obtain ventilation information corresponding to the chemical workshop to be monitored, and to obtain equipment information corresponding to the chemical workshop to be monitored;

[0009] The combustion analysis module is used to analyze the combustion-supporting influencing factors corresponding to the chemical workshop to be monitored at each monitoring time point according to the ventilation information corresponding to the chemical workshop to be monitored, and to analyze the temperature influencing factors corresponding to the chemical workshop to be monitored at each monitoring time point according to the equipment information corresponding to the chemical workshop to be monitored, and to obtain the preset combustion concentration of each combustible gas type, the preset combustion temperature of each combustible gas type and the preset oxygen concentration of each combustible gas type at each monitoring point in the chemical workshop to be monitored at each monitoring time point according to each combustible gas type at each monitoring point in the chemical workshop to be monitored, and then compare and analyze them with the concentration, air temperature and oxygen concentration corresponding to each combustible gas type at each monitoring point in the chemical workshop to be monitored at each monitoring time point, to obtain the combustion state evaluation coefficient corresponding to the chemical workshop to be monitored, and then analyze the corresponding hazard level of the chemical workshop to be monitored;

[0010] The early warning terminal is used to issue corresponding early warning prompts according to the corresponding danger level of the chemical workshop to be monitored.

[0011] Preferably, the specific judgment process of judging the smoke state corresponding to the chemical workshop to be monitored is as follows: comparing the smoke concentration corresponding to each monitoring point at each monitoring time point with the preset smoke concentration threshold; if the smoke concentration corresponding to a certain monitoring point at a certain monitoring time point is greater than or equal to the preset smoke concentration threshold, then it is judged that the smoke state corresponding to the chemical workshop to be monitored is in an abnormal state; if the smoke concentration corresponding to each monitoring point at each monitoring time point is less than the preset smoke concentration threshold, then it is judged that the smoke state corresponding to the chemical workshop to be monitored is in a normal state.

[0012] Preferably, the ventilation information corresponding to the chemical workshop to be monitored includes the area of ​​each ventilation opening in the chemical workshop to be monitored and the wind speed of the fan in each ventilation opening at each monitoring time point;

[0013] The equipment information corresponding to the chemical workshop to be monitored includes the location of each device and the temperature of each device at each monitoring time point.

[0014] Preferably, the analysis of the combustion-supporting influencing factors corresponding to the monitored chemical workshop at each monitoring time point is performed in the following specific analysis process:

[0015] The volume of the chemical workshop to be monitored is obtained, and then compared with the reference vent area corresponding to the volume of each workshop stored in the database to obtain the reference vent area corresponding to the chemical workshop to be monitored, which is recorded as S;

[0016] Substitute the area of ​​each vent in the chemical workshop to be monitored and the wind speed of the fan in each vent at each monitoring time point into the calculation formula The combustion-supporting influence factor κ1 corresponding to the monitored chemical workshop at each monitoring time point is obtained. i , where S i represents the area of ​​the ith ventilation opening in the chemical workshop to be monitored, v it represents the wind speed of the fan in the ith vent at the tth monitoring time point, v is the set reference fan wind speed, ε 1 , ε 2 are the weight factors corresponding to the set ventilation opening area and fan wind speed respectively, i represents the number corresponding to each ventilation opening, i=1, 2...n, t represents the number corresponding to each monitoring time point, t=1, 2...p.

[0017] Preferably, the temperature influence factor corresponding to each monitoring time point of the chemical workshop to be monitored is analyzed, and the specific analysis process is as follows:

[0018] Based on the corresponding positions of each device in the chemical workshop to be monitored, the distance between each device is obtained, and then the average distance between each device and other devices is obtained by mean calculation, which is recorded as j represents the number corresponding to each device, j=1, 2...m;

[0019] The air temperatures corresponding to each monitoring point in the monitored chemical workshop at each monitoring time point are accumulated and averaged to obtain the average air temperature corresponding to each monitoring time point in the monitored chemical workshop, which is used as the air temperature corresponding to each monitoring time point in the monitored chemical workshop, denoted as T t ;

[0020] By calculating the formula Get the temperature influence factor κ2 corresponding to each monitoring time point in the chemical workshop to be monitored t , where T jt It represents the temperature of the jth device at the tth monitoring time point, L is the set reference distance between devices, ΔT is the difference between the set reference device temperature and the air temperature, e represents the natural constant, and η represents the compensation factor corresponding to the temperature influence factor.

[0021] Preferably, the specific analysis process of the combustion state evaluation coefficient corresponding to the chemical workshop to be monitored is as follows:

[0022] According to the combustible gas types at each monitoring point in the chemical workshop to be monitored at each monitoring time point, the combustible gas types corresponding to the chemical workshop to be monitored at each monitoring time point are statistically obtained, and then compared with the preset combustion concentration, preset combustion temperature and preset oxygen concentration corresponding to each combustible gas type stored in the database, and the preset combustion concentration corresponding to each combustible gas type, the preset combustion temperature corresponding to each combustible gas type and the preset oxygen concentration corresponding to each combustible gas type at each monitoring time point in the chemical workshop to be monitored are obtained, and are marked as R′ respectively. ft , T f ' t and O′ ft , where f represents the number corresponding to each combustible gas type, f = 1, 2...g;

[0023] The concentration and oxygen concentration corresponding to each type of combustible gas at each monitoring point in the chemical workshop to be monitored at each monitoring time point are averaged to obtain the average concentration and oxygen concentration corresponding to each type of combustible gas in the chemical workshop to be monitored at each monitoring time point, and the concentration and oxygen concentration corresponding to each type of combustible gas in the chemical workshop to be monitored at each monitoring time point are recorded as R ft , O t , and thus the combustion state assessment coefficient corresponding to the chemical workshop to be monitored is calculated according to the combustion state assessment coefficient calculation formula.

[0024] Preferably, the combustion state evaluation coefficient calculation formula is:

[0025] in It represents the combustion state assessment coefficient corresponding to the chemical workshop to be monitored. σ1, σ2, σ3 are the weight factors corresponding to the set combustible gas concentration, combustion temperature, and oxygen concentration, respectively. τ is the weight factor corresponding to the set combustion state assessment coefficient. e represents a natural constant.

[0026] Preferably, the analysis of the hazard level corresponding to the chemical workshop to be monitored is specifically carried out as follows: the combustion state assessment coefficient corresponding to the chemical workshop to be monitored is compared with the combustion state assessment coefficient intervals corresponding to each set hazard level; if the combustion state assessment coefficient corresponding to the chemical workshop to be monitored is within the combustion state assessment coefficient interval corresponding to a certain hazard level, then the hazard level is used as the hazard level corresponding to the chemical workshop to be monitored.

[0027] The beneficial effects of the present invention are as follows: a very early fire monitoring system provided by the present invention monitors the smoke in the monitored chemical workshop, and when the smoke concentration is abnormal, monitors the combustible gas concentration, oxygen and air temperature in the monitored chemical workshop, and analyzes the influence of the ventilation conditions in the monitored chemical workshop on the oxygen concentration in the monitored chemical workshop and the influence of the equipment operating temperature on the air temperature, and then analyzes the combustion state in the monitored chemical workshop, thereby judging the danger level in the monitored chemical workshop, solving the deficiencies in the current technology, realizing the intelligent and automated monitoring of very early fires in chemical workshops, greatly improving the accuracy of very early fire monitoring and early warning in chemical workshops, effectively reducing the spread of subsequent fires, and providing a reference for the implementation of subsequent fire prevention measures in chemical workshops, thereby effectively reducing the property losses caused by chemical workshop fires, and greatly improving the safety of personnel in chemical workshops. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 It is a schematic diagram of the system structure connection of the present invention. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figure 1 As shown, a very early fire monitoring system includes: a gas monitoring module, an environment collection module, an information acquisition module, a combustion analysis module, an early warning terminal, and a database.

[0032] The gas monitoring module is connected to the environment acquisition module, the combustion analysis module is connected to the environment acquisition module, the information acquisition module, the early warning terminal and the database respectively, and the database is also connected to the information acquisition module.

[0033] The gas monitoring module is used to arrange various monitoring points in the chemical workshop to be monitored, arrange various monitoring time points according to preset time intervals, and then collect the smoke concentration corresponding to each monitoring point in the chemical workshop to be monitored at each monitoring time point, thereby determining the smoke state corresponding to the chemical workshop to be monitored;

[0034] It should be noted that an aspirating smoke fire detector is installed at each monitoring point of the chemical workshop to be monitored, so that the smoke concentration corresponding to each monitoring point of the chemical workshop to be monitored at each monitoring time point is collected through the aspirating smoke fire detector at each monitoring point.

[0035] In a specific embodiment, the smoke state corresponding to the chemical workshop to be monitored is determined by the following specific determination process: the smoke concentration corresponding to each monitoring point at each monitoring time point is compared with a preset smoke concentration threshold value; if the smoke concentration corresponding to a certain monitoring point at a certain monitoring time point is greater than or equal to the preset smoke concentration threshold value, then it is determined that the smoke state corresponding to the chemical workshop to be monitored is in an abnormal state; if the smoke concentration corresponding to each monitoring point at each monitoring time point is less than the preset smoke concentration threshold value, then it is determined that the smoke state corresponding to the chemical workshop to be monitored is in a normal state.

[0036] The environment collection module is used to collect the types of combustible gases corresponding to each monitoring point in the chemical workshop to be monitored at each monitoring time point, the concentration of each combustible gas type, the oxygen concentration and the air temperature when the smoke state corresponding to the chemical workshop to be monitored is in an abnormal state;

[0037] It should be noted that combustible gas detectors, oxygen sensors and temperature sensors are installed at each monitoring point in the chemical workshop to be monitored, so that the combustible gas types corresponding to each monitoring point at each monitoring time point, the concentration corresponding to each combustible gas type, oxygen concentration and air temperature are collected respectively through the combustible gas detectors, oxygen sensors and temperature sensors at each monitoring point.

[0038] It should also be noted that the types of combustible gases include hydrogen, methane, etc.; the oxygen concentration is the oxygen concentration in the air.

[0039] The information acquisition module is used to obtain ventilation information corresponding to the chemical workshop to be monitored, and to obtain equipment information corresponding to the chemical workshop to be monitored;

[0040] In a specific embodiment, the ventilation information corresponding to the chemical workshop to be monitored includes the area of ​​each ventilation opening in the chemical workshop to be monitored and the wind speed of the fan in each ventilation opening at each monitoring time point;

[0041] The equipment information corresponding to the chemical workshop to be monitored includes the location of each device and the temperature of each device at each monitoring time point.

[0042] It should be noted that the area of ​​each vent and the corresponding position of each equipment in the chemical workshop to be monitored are extracted from the database; a wind speed sensor is installed in the fan of each vent, and the wind speed of the fan in each vent at each monitoring time point is collected through the wind speed sensor in the fan of each vent; a temperature sensor is installed in each equipment in the chemical workshop to be monitored, and the corresponding temperature of each equipment at each monitoring time point is collected through the temperature sensor in each equipment.

[0043] It should also be noted that the equipment includes but is not limited to heating equipment and electrical equipment.

[0044] The combustion analysis module is used to analyze the combustion-supporting influencing factors corresponding to the chemical workshop to be monitored at each monitoring time point according to the ventilation information corresponding to the chemical workshop to be monitored;

[0045] In a specific embodiment, the combustion-supporting influencing factors corresponding to the monitored chemical workshop at each monitoring time point are analyzed, and the specific analysis process is as follows:

[0046] The volume of the chemical workshop to be monitored is obtained, and then compared with the reference vent area corresponding to the volume of each workshop stored in the database to obtain the reference vent area corresponding to the chemical workshop to be monitored, which is recorded as S;

[0047] It should be noted that the volume corresponding to the chemical workshop to be monitored is obtained from the database.

[0048] Substitute the area of ​​each vent in the chemical workshop to be monitored and the wind speed of the fan in each vent at each monitoring time point into the calculation formula The combustion-supporting influence factor κ1 corresponding to the monitored chemical workshop at each monitoring time point is obtained. i , where S i represents the area of ​​the ith ventilation opening in the chemical workshop to be monitored, v it represents the wind speed of the fan in the ith vent at the tth monitoring time point, v is the set reference fan wind speed, ε 1 , ε 2 are the weight factors corresponding to the set ventilation opening area and fan wind speed respectively, i represents the number corresponding to each ventilation opening, i=1, 2...n, t represents the number corresponding to each monitoring time point, t=1, 2...p.

[0049] The combustion analysis module is also used to analyze the temperature influence factor corresponding to the chemical workshop to be monitored at each monitoring time point according to the equipment information corresponding to the chemical workshop to be monitored;

[0050] In a specific embodiment, the temperature influence factor corresponding to each monitoring time point in the chemical workshop to be monitored is analyzed, and the specific analysis process is as follows: based on the corresponding position of each device in the chemical workshop to be monitored, the distance between each device is obtained, and then the average distance between each device and other devices is obtained by average calculation, which is recorded as j represents the number corresponding to each device, j=1, 2...m;

[0051] The air temperatures corresponding to each monitoring point in the monitored chemical workshop at each monitoring time point are accumulated and averaged to obtain the average air temperature corresponding to each monitoring time point in the monitored chemical workshop, which is used as the air temperature corresponding to each monitoring time point in the monitored chemical workshop, denoted as T t ;

[0052] By calculating the formula Get the temperature influence factor κ2 corresponding to each monitoring time point in the chemical workshop to be monitored t , where T jt It represents the temperature of the jth device at the tth monitoring time point, L is the set reference distance between devices, ΔT is the difference between the set reference device temperature and the air temperature, e represents the natural constant, and η represents the compensation factor corresponding to the temperature influence factor.

[0053] The combustion analysis module is also used to obtain the preset combustion concentration of each combustible gas type at each monitoring point in the chemical workshop to be monitored at each monitoring time point, the preset combustion temperature of each combustible gas type and the preset oxygen concentration of each combustible gas type, and then compare and analyze the concentration, air temperature and oxygen concentration corresponding to each combustible gas type at each monitoring point in the chemical workshop to be monitored at each monitoring time point, so as to obtain the combustion state evaluation coefficient corresponding to the chemical workshop to be monitored, and then analyze the corresponding hazard level of the chemical workshop to be monitored;

[0054] In a specific embodiment, the specific analysis process of the combustion state assessment coefficient corresponding to the chemical workshop to be monitored is as follows: according to the combustible gas types of each monitoring point in the chemical workshop to be monitored at each monitoring time point, the combustible gas types corresponding to the chemical workshop to be monitored at each monitoring time point are statistically obtained, and then compared with the preset combustion concentration corresponding to each combustible gas type stored in the database, the preset combustion temperature corresponding to each combustible gas type, and the preset oxygen concentration corresponding to each combustible gas type, to obtain the preset combustion concentration corresponding to each combustible gas type at each monitoring time point in the chemical workshop to be monitored, the preset combustion temperature corresponding to each combustible gas type, and the preset oxygen concentration corresponding to each combustible gas type, and mark them as R′ respectively. ft 、T f ' t and O′ft , where f represents the number corresponding to each combustible gas type, f = 1, 2...g;

[0055] The concentration and oxygen concentration corresponding to each type of combustible gas at each monitoring point in the chemical workshop to be monitored at each monitoring time point are averaged to obtain the average concentration and oxygen concentration corresponding to each type of combustible gas in the chemical workshop to be monitored at each monitoring time point, and the concentration and oxygen concentration corresponding to each type of combustible gas in the chemical workshop to be monitored at each monitoring time point are recorded as R ft , O t , and thus the combustion state assessment coefficient corresponding to the chemical workshop to be monitored is calculated according to the combustion state assessment coefficient calculation formula.

[0056] In another specific embodiment, the combustion state evaluation coefficient calculation formula is: in It represents the combustion state assessment coefficient corresponding to the chemical workshop to be monitored. σ1, σ2, σ3 are the weight factors corresponding to the set combustible gas concentration, combustion temperature, and oxygen concentration, respectively. τ is the weight factor corresponding to the set combustion state assessment coefficient. e represents a natural constant.

[0057] In another specific embodiment, the analysis of the hazard level corresponding to the chemical workshop to be monitored is carried out as follows: the combustion state assessment coefficient corresponding to the chemical workshop to be monitored is compared with the combustion state assessment coefficient intervals corresponding to each set hazard level; if the combustion state assessment coefficient corresponding to the chemical workshop to be monitored is within the combustion state assessment coefficient interval corresponding to a certain hazard level, then the hazard level is used as the hazard level corresponding to the chemical workshop to be monitored.

[0058] The early warning terminal is used to issue corresponding early warning prompts according to the corresponding danger level of the chemical workshop to be monitored.

[0059] It should be noted that the hazard level can be level one, level two, or level three, among which level one > level two > level three. When the hazard level corresponding to the chemical workshop to be monitored is level one, the level one hazard early warning prompt is activated; when the hazard level corresponding to the chemical workshop to be monitored is level two, the level two hazard early warning prompt is activated; when the hazard level corresponding to the chemical workshop to be monitored is level three, the level three hazard early warning prompt is activated.

[0060] The database is used to store the volume corresponding to the chemical workshop to be monitored, the area of ​​each ventilation port and the position of each equipment in the chemical workshop to be monitored, the reference ventilation port area corresponding to the volume of each workshop, the preset combustion concentration corresponding to each combustible gas type, the preset combustion temperature corresponding to each combustible gas type and the preset oxygen concentration corresponding to each combustible gas type.

[0061] The present invention implements the method of monitoring the smoke in the chemical workshop to be monitored, and when the smoke concentration is abnormal, monitoring the combustible gas concentration, oxygen and air temperature in the chemical workshop to be monitored, analyzing the influence of the ventilation condition in the chemical workshop to be monitored on the oxygen concentration in the chemical workshop to be monitored and the influence of the equipment operating temperature on the air temperature, and then analyzing the combustion state in the chemical workshop to be monitored, thereby judging the danger level in the chemical workshop to be monitored, solving the deficiencies in the current technology, realizing the intelligent and automated monitoring of very early fires in chemical workshops, greatly improving the accuracy of very early fire monitoring and early warning in chemical workshops, effectively reducing the spread of subsequent fires, and providing a reference for the implementation of subsequent fire prevention measures in chemical workshops, thereby effectively reducing the property losses caused by chemical workshop fires and greatly improving the safety of personnel in chemical workshops.

[0062] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A very early fire monitoring system, characterized in that: include: The gas monitoring module is used to set up various monitoring points in the chemical workshop to be monitored, set up various monitoring time points according to preset time intervals, and then collect the smoke concentration corresponding to each monitoring point in the chemical workshop to be monitored at each monitoring time point, thereby determining the smoke state corresponding to the chemical workshop to be monitored; The environment collection module is used to collect the types of combustible gases, the concentrations of the combustible gases, the oxygen concentration and the air temperature corresponding to the monitoring points in the chemical workshop to be monitored at each monitoring time point when the smoke state corresponding to the chemical workshop to be monitored is in an abnormal state; An information acquisition module is used to obtain ventilation information corresponding to the chemical workshop to be monitored, and to obtain equipment information corresponding to the chemical workshop to be monitored; The ventilation information corresponding to the chemical workshop to be monitored includes the area of ​​each ventilation opening in the chemical workshop to be monitored and the wind speed of the fan in each ventilation opening at each monitoring time point; The equipment information corresponding to the chemical workshop to be monitored includes the location of each device and the temperature of each device at each monitoring time point; The combustion analysis module is used to analyze the combustion-supporting influencing factors corresponding to the chemical workshop to be monitored at each monitoring time point according to the ventilation information corresponding to the chemical workshop to be monitored, and to analyze the temperature influencing factors corresponding to the chemical workshop to be monitored at each monitoring time point according to the equipment information corresponding to the chemical workshop to be monitored, and to obtain the preset combustion concentration of each combustible gas type, the preset combustion temperature of each combustible gas type and the preset oxygen concentration of each combustible gas type at each monitoring point in the chemical workshop to be monitored at each monitoring time point according to each combustible gas type at each monitoring point in the chemical workshop to be monitored, and then compare and analyze them with the concentration, air temperature and oxygen concentration corresponding to each combustible gas type at each monitoring point in the chemical workshop to be monitored at each monitoring time point, to obtain the combustion state evaluation coefficient corresponding to the chemical workshop to be monitored, and then analyze the corresponding hazard level of the chemical workshop to be monitored; The analysis of the combustion-supporting influencing factors corresponding to the monitored chemical workshop at each monitoring time point is as follows: Obtain the volume corresponding to the chemical workshop to be monitored, and then compare it with the reference vent area corresponding to the volume of each workshop stored in the database to obtain the reference vent area corresponding to the chemical workshop to be monitored, recorded as S; Substitute the area of ​​each vent in the chemical workshop to be monitored and the wind speed of the fan in each vent at each monitoring time point into the calculation formula The combustion-supporting influence factor κ1 corresponding to the monitored chemical workshop at each monitoring time point is obtained. i , where S i represents the area of ​​the ith ventilation opening in the chemical workshop to be monitored, v it represents the wind speed of the fan in the i-th vent at the t-th monitoring time point, v is the set reference fan wind speed, ε1 and ε2 are the weight factors corresponding to the set vent area and fan wind speed respectively, i represents the number corresponding to each vent, i=1, 2...n, t represents the number corresponding to each monitoring time point, t=1, 2...p; The analysis of the temperature influencing factors of the chemical workshop to be monitored at each monitoring time point is as follows: Based on the corresponding positions of each device in the chemical workshop to be monitored, the distance between each device is obtained, and then the average distance between each device and other devices is obtained by mean calculation, which is recorded as j represents the number corresponding to each device, j=1, 2...m; The air temperatures corresponding to each monitoring point in the monitored chemical workshop at each monitoring time point are accumulated and averaged to obtain the average air temperature corresponding to each monitoring time point in the monitored chemical workshop, which is used as the air temperature corresponding to each monitoring time point in the monitored chemical workshop, denoted as T t ; By calculating the formula Get the temperature influence factor κ2 corresponding to each monitoring time point in the chemical workshop to be monitored t , where T jt represents the temperature of the jth device at the tth monitoring time point, L is the reference distance between the devices, ΔT is the difference between the reference device temperature and the air temperature, e represents the natural constant, and η represents the compensation factor corresponding to the temperature influence factor; The specific analysis process of the combustion state evaluation coefficient corresponding to the chemical workshop to be monitored is as follows: According to the combustible gas types of each monitoring point in the chemical workshop to be monitored at each monitoring time point, the combustible gas types corresponding to the chemical workshop to be monitored at each monitoring time point are statistically obtained, and then compared with the preset combustion concentration corresponding to each combustible gas type stored in the database, the preset combustion temperature corresponding to each combustible gas type, and the preset oxygen concentration corresponding to each combustible gas type, to obtain the preset combustion concentration, preset combustion temperature, and preset oxygen concentration corresponding to each combustible gas type in the chemical workshop to be monitored at each monitoring time point, and mark them as R′ respectively. ft 、T f ' t and O′ ft , where f represents the number corresponding to each combustible gas type, f = 1, 2...g; The concentration and oxygen concentration corresponding to each type of combustible gas at each monitoring point in the chemical workshop to be monitored at each monitoring time point are averaged to obtain the average concentration and oxygen concentration corresponding to each type of combustible gas in the chemical workshop to be monitored at each monitoring time point, and the concentration and oxygen concentration corresponding to each type of combustible gas in the chemical workshop to be monitored at each monitoring time point are recorded as R ft , O t , and thus the combustion state assessment coefficient corresponding to the chemical workshop to be monitored is calculated according to the combustion state assessment coefficient calculation formula; The combustion state evaluation coefficient calculation formula is: in It represents the combustion state evaluation coefficient corresponding to the chemical workshop to be monitored, σ1, σ2, σ3 are the weight factors corresponding to the set combustible gas concentration, combustion temperature, and oxygen concentration, τ is the weight factor corresponding to the set combustion state evaluation coefficient, and e represents a natural constant; The early warning terminal is used to issue corresponding early warning prompts according to the corresponding danger level of the chemical workshop to be monitored.

2. The very early fire monitoring system according to claim 1, characterized in that: The specific judgment process of judging the smoke state corresponding to the chemical workshop to be monitored is as follows: comparing the smoke concentration corresponding to each monitoring point at each monitoring time point with the preset smoke concentration threshold; if the smoke concentration corresponding to a certain monitoring point at a certain monitoring time point is greater than or equal to the preset smoke concentration threshold, then it is judged that the smoke state corresponding to the chemical workshop to be monitored is in an abnormal state; if the smoke concentration corresponding to each monitoring point at each monitoring time point is less than the preset smoke concentration threshold, then it is judged that the smoke state corresponding to the chemical workshop to be monitored is in a normal state.

3. The very early fire monitoring system according to claim 1, characterized in that: The analysis of the hazard level corresponding to the chemical workshop to be monitored is specifically carried out as follows: the combustion state assessment coefficient corresponding to the chemical workshop to be monitored is compared with the combustion state assessment coefficient intervals corresponding to each set hazard level; if the combustion state assessment coefficient corresponding to the chemical workshop to be monitored is within the combustion state assessment coefficient interval corresponding to a certain hazard level, then the hazard level is used as the hazard level corresponding to the chemical workshop to be monitored.

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