Comprehensive building energy-saving ventilation system

Abstract

The invention relates to the field of building ventilation, in particular to a comprehensive building energy-saving ventilation system which comprises an air quality monitoring module, an operation monitoring module, a server and a ventilation adjusting module. By monitoring the air quality and comprehensively analyzing the state of the operating personnel, the abnormal operating environment can be quickly identified, the ventilation intensity can be adjusted in time, the ventilation intensity of the building can be accurately controlled, and the ventilation demand can be accurately evaluated; unnecessary energy consumption is reduced by adjusting the running frequency and duration of the ventilation equipment, and energy utilization optimization is facilitated; according to ventilation adjustment based on real-time data and comprehensive analysis, the energy efficiency and ventilation efficiency of the building are effectively improved, meanwhile, energy conservation and environmental protection are achieved, and the quality and safety of the working environment are improved.

Description

Technical Field

[0001] The invention relates to the field of energy-saving ventilation, and in particular to a comprehensive building energy-saving ventilation system. Background Art

[0002] At the construction site, a large amount of pollutants such as dust, harmful gases and steam will be generated. Through a good ventilation system, these pollutants can be discharged in time to ensure the air quality of the construction site and reduce the health problems caused by workers inhaling harmful substances. Therefore, the ventilation system is very important for construction;

[0003] At present, ventilation at construction sites is mainly regulated by manually setting fixed thresholds. This method lacks flexibility and responsiveness to environmental changes, especially in closed spaces or high-temperature environments. The current ventilation system is also lacking in energy saving, and more efficient energy utilization is needed. This limitation will affect the performance of the ventilation system, the comfort of the working environment, and work efficiency.

[0004] Therefore, there is an urgent need for a comprehensive building energy-saving ventilation system to solve the current intelligent control and environmental adaptability. Summary of the invention

[0005] The purpose of the present invention is to solve the problem of energy-saving ventilation and to propose a comprehensive building energy-saving ventilation system.

[0006] The purpose of the present invention can be achieved through the following technical solutions: a comprehensive building energy-saving ventilation system, including an air quality monitoring module, an operation monitoring module, a server and a ventilation adjustment module; the specific steps are:

[0007] The air quality monitoring module connects to the sensors in the building to obtain air quality information and sends it to the server for storage; the air quality information includes the air temperature in the area, the air humidity in the area, the particulate matter concentration in the area, the oxygen concentration and the carbon dioxide concentration in the area; the specific steps are as follows:

[0008] The building area is evenly divided and i monitoring areas are set; i = 1, 2, 3 ... I, I is a positive integer, and I represents the total number of monitoring areas; the temperature of each monitoring area is obtained by the temperature sensor and its value Wi is taken, and then the temperature of each monitoring area in different time periods is monitored to obtain the temperature of each monitoring area in different time periods in the area, and the mean value is calculated to obtain the average temperature of each monitoring area

[0009] Repeat the above steps to obtain the current air humidity Di and average air humidity in each monitoring area through humidity sensors, particulate matter sensors, oxygen sensors and carbon dioxide sensors Current particle concentration Ki and average particle concentration in each monitoring area The current oxygen concentration Qi and average oxygen concentration in each monitoring area As well as the current carbon dioxide concentration Hi and average carbon dioxide concentration in each monitoring area Substitute the values ​​of the above data into the set formula The air impact index Yi of the current monitoring area is calculated; where a1, a2, a3, a4 and a5 are the set weight factors;

[0010] Set an air impact index threshold. If the air impact index Yi of the current monitoring area is greater than the air impact index threshold, the air impact index of the current monitoring area is abnormal, which is recorded as the preliminary abnormal air impact index, and the abnormal air impact index is sent to the ventilation adjustment module; identify the area where the preliminary abnormal air impact index is located, and record the location of the area as the abnormal monitoring location, and count the number of abnormal monitoring locations; and send the above air impact index to the server;

[0011] The operation monitoring module monitors the activities of the operators in the area and their impact on the environment, analyzes them to obtain the operator operation impact index in the area, and sends it to the server for storage;

[0012] The ventilation control module conducts a comprehensive analysis based on the received air impact index and operation impact index, and controls the ventilation intensity of the building accordingly.

[0013] As a preferred embodiment of the present invention, the operation monitoring module analyzes the operation impact index by monitoring the activities of the operators and the environmental impact; the specific steps are:

[0014] The number of production workers in the monitoring area is monitored by intelligent cameras and infrared sensors; it is represented by j, where j = 1, 2, 3...J, J is a positive integer, and J represents the total number of production workers in the current area; it can be obtained that each production worker corresponds to a unique number j; by identifying the number of the production worker, the length of time Tji for each worker to stay in the area is obtained; i represents the serial number of the monitoring area in the monitoring area, and Tji represents the length of time the worker with the number j stays in the monitoring area with the serial number i; the number of areas L1 involved by the worker and the corresponding air impact value Yi of the area are counted;

[0015] Compare and analyze the air impact value with the set air impact index interval. When the air impact value is greater than the maximum value in the set air impact index interval, the area corresponding to the air impact value is recorded as a severe air impact monitoring area; when the air impact value is within the set air impact index interval, the area corresponding to the air impact value is recorded as a moderate air impact monitoring area; when the air impact value is less than the minimum value in the set air impact index interval, the area corresponding to the air impact value is recorded as a mild air impact monitoring area; count the number of severe air impact monitoring areas, moderate air impact monitoring areas and mild air impact monitoring areas respectively, and record them as L2, L3 and L4 respectively;

[0016] Substitute the total number of areas involved by the workers L1, the value of the severe air impact monitoring area L2, the value of the moderate air impact monitoring area L3, the value of the light air impact monitoring area L4, the value of the length of time the workers stay in the area Tji and the regional impact value Yi into the set formula The operation value Gji is calculated; b1, b2, b3 and b4 are the set weight factors respectively; thus, the operation value of each operator can be obtained;

[0017] Use smart cameras to identify whether the workers in the area are wearing protective equipment, identify the total number of workers in the area F1, identify the number of workers wearing protective equipment F2 and the number of workers not wearing protective equipment F3; substitute the above numbers into the set formula The protection value Fi is calculated, where w1 and w2 are the set weight factors; thus, the protection value of each operator can be obtained;

[0018] Substitute the operating value Gji and the protection value Fi into the set formula The operation impact index Zi is calculated; where e is a natural constant, c1 and c2 are the set weight factors; thus, the operation impact index of each area can be obtained;

[0019] Set a job impact index threshold. If the job impact index Zi of the current monitoring area is greater than the job impact index threshold, the job impact index of the current monitoring area is abnormal, which is recorded as the preliminary abnormal job impact index, and the abnormal job impact index is sent to the ventilation adjustment module; identify the area where the preliminary abnormal job impact index is located, and record the location of the area as the monitoring abnormal location, and count the number of monitoring abnormal locations; and send the above job impact index to the server.

[0020] As a preferred embodiment of the present invention, the ventilation adjustment module controls the ventilation intensity of the building by comprehensive analysis based on the air impact index and the operation impact index; the specific steps are:

[0021] Step 1: Normalize the values ​​of the air impact index and the work impact index to obtain the adjustment value; thereby, the adjustment value of each area may be obtained; set an adjustment interval, when the adjustment value is greater than the set maximum value of the adjustment interval, it is matched to the first-level ventilation, when the adjustment value is within the set adjustment interval, it is matched to the second-level ventilation, when the adjustment value is less than the set minimum value of the adjustment interval, it is matched to the third-level ventilation; the first-level ventilation, the second-level ventilation and the third-level ventilation each correspond to a ventilation frequency;

[0022] Step 2: Control the ventilation equipment to operate according to the matched ventilation frequency and maintain a fixed operating time. It should be noted that the fixed operating time is set and adjusted by industry professionals based on the building structure and ventilation requirements.

[0023] Step 3: After maintaining the ventilation frequency for a fixed time, repeat the air quality monitoring module, operation monitoring module and ventilation adjustment module; when the equipment operates for a fixed time according to the matched ventilation frequency, re-monitor the data according to the above modules. If the monitored data does not increase significantly but is slowly decreasing, continue to maintain the ventilation frequency until the ventilation level and ventilation frequency are reduced; when the equipment operates for a fixed time according to the matched ventilation frequency, re-monitor the data according to the above modules. If the data tends to be within the normal range or improves slowly, the ventilation level and frequency are gradually reduced to save energy and maintain a comfortable indoor environment; the ventilation adjustment module continuously adjusts the ventilation strategy according to the real-time data of the monitoring module to ensure the continuous optimization of the air quality inside the building and the effective use of energy. .

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. Through real-time data monitoring and anomaly identification, rapid response and measures are taken, and the air impact index is calculated according to the importance of different parameters, ensuring the accuracy and reliability of the data and improving the management efficiency and accuracy of the air quality in the building.

[0026] 2. By monitoring the activities of workers in the area and their impact on the environment, abnormal working environment can be quickly identified so that ventilation intensity can be adjusted in time; by calculating the working value and protection value, the working intensity and ventilation demand in the area can be accurately evaluated. Effective ventilation adjustment can optimize energy utilization, reduce energy consumption and resource waste while ensuring air quality; by accurately evaluating the working environment, ensuring that the ventilation system operates in the best condition, not only the ventilation efficiency is improved but also the safety of the operation is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0028] Figure 1It is a schematic diagram of system module connection of the present invention. DETAILED DESCRIPTION

[0029] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than 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.

[0030] Example 1

[0031] See also Figure 1 As shown, a comprehensive building energy-saving ventilation system includes: an air quality monitoring module, an operation monitoring module, a server, and a ventilation adjustment module;

[0032] The air quality monitoring module connects to the sensors in the building to obtain air quality information, analyzes it, obtains the air impact index, and sends the air impact index to the server for storage; the air quality information includes the air temperature in the area, the air humidity in the area, the particulate matter concentration in the area, the oxygen concentration and the carbon dioxide concentration; the specific steps are as follows:

[0033] The building area is evenly divided and i monitoring areas are set, where i = 1, 2, 3 ... I, I is a positive integer, and I represents the total number of monitoring areas; the temperature of each monitoring area is obtained by the temperature sensor, and its value is recorded as Wi, and then the temperature of each monitoring area in different time periods is monitored to obtain the temperature of each monitoring area in different time periods in the area, and the average value is calculated to obtain the average temperature of each monitoring area, and its value is recorded as

[0034] The humidity of each monitoring area is obtained through the humidity sensor, and its value is recorded as Di. Then the humidity of each monitoring area in different time periods is monitored to obtain the humidity of each monitoring area in different time periods in the region, and the average is calculated to obtain the average humidity of each monitoring area, and its value is recorded as

[0035] The particle concentration of each monitoring area is obtained through the particle sensor, and its value is recorded as Ki. Then the particle concentration of each monitoring area in different time periods is monitored to obtain the particle concentration of each monitoring area in different time periods in the region, and the average is calculated to obtain the average particle concentration of each monitoring area, and its value is recorded as

[0036] The oxygen concentration value of each monitoring area is obtained by the oxygen sensor and recorded as Qi. Then the oxygen concentration of each monitoring area in different time periods is monitored to obtain the oxygen concentration of each monitoring area in different time periods in each area. The average value is calculated to obtain the average oxygen concentration of each monitoring area, and its value is recorded as

[0037] The carbon dioxide concentration value of each monitoring area is obtained by the carbon dioxide sensor and recorded as Hi. Then the carbon dioxide concentration of each monitoring area in different time periods is monitored to obtain the carbon dioxide concentration of each monitoring area in different time periods in each area, and the average value is calculated to obtain the average carbon dioxide concentration of each monitoring area, and its value is recorded as

[0038] The current detection area temperature value Wi, average temperature value The current humidity value Di and average humidity value of the detection area The particle concentration value Ki and the average particle concentration value in the current detection area Current oxygen concentration Qi and average oxygen concentration in the detection area The current monitoring area carbon dioxide concentration Hi and average carbon dioxide concentration Substitute the value of into the formula The air impact index Yi of the current monitoring area is calculated, where a1, a2, a3, a4 and a5 are the set weight factors, a1 is 0.46, a2 is 0.35, a3 is 0.28, a4 is 0.74, and a5 is 0.52;

[0039] Set an air impact index threshold. If the air impact index Yi of the current monitoring area is greater than the air impact index threshold, the air impact index of the current monitoring area is abnormal, which is recorded as the preliminary abnormal air impact index, and the abnormal air impact index is sent to the ventilation adjustment module; identify the area where the preliminary abnormal air impact index is located, and record the location of the area as the monitoring abnormal location, and count the number of monitoring abnormal locations; it should be noted that the air impact index is proportional to the ventilation intensity. The larger the air impact index, the greater the ventilation intensity, and the smaller the air impact index, the smaller the ventilation intensity; and send the above air impact index to the server;

[0040] The air quality monitoring module quickly responds and takes measures through real-time data monitoring and anomaly identification, and calculates the air impact index based on the importance of different parameters, ensuring the accuracy and reliability of the data and improving the management efficiency and accuracy of the air quality in the building.

[0041] The operation monitoring module monitors the activities of the operators in the area and their impact on the environment, analyzes them to obtain the operator operation impact index in the area, and sends it to the server for storage; the specific steps are as follows:

[0042] The number of production workers in the monitoring area is monitored by smart cameras and infrared sensors, represented by j, where j = 1, 2, 3...J, J is a positive integer, and J represents the total number of production workers in the current area; it can be obtained that each production worker corresponds to a unique number j; by identifying the number of the production worker, the length of time each worker stays in the area is obtained, recorded as Tji; i represents the monitoring area number in the monitoring area, and Tji represents the length of time the worker with number j stays in the monitoring area with number i; the number of areas involved by the operator is counted and recorded as L1 and the air impact value Yi corresponding to the area;

[0043] Compare and analyze the air impact value with the set air impact index interval. When the air impact value is greater than the maximum value in the set air impact index interval, it means that the air impact degree of this monitoring area involved by the operator is higher, and the area corresponding to the air impact value is recorded as a severe air impact monitoring area; when the air impact value is within the set air impact index interval, the area corresponding to the air impact value is recorded as a moderate air impact monitoring area; when the air impact value is less than the minimum value in the set air impact index interval, the area corresponding to the air impact value is recorded as a mild air impact monitoring area; the number of severe air impact monitoring areas, moderate air impact monitoring areas and mild air impact monitoring areas are counted respectively, and they are recorded as L2, L3 and L4 respectively;

[0044] Substitute the total number of areas involved by the workers L1, the value of the severe air impact monitoring area L2, the value of the moderate air impact monitoring area L3, the value of the light air impact monitoring area L4, the value of the length of time the workers stay in the area Tji and the regional impact value Yi into the set formula The operation value Gji is calculated; b1, b2, b3 and b4 are the set weight factors, b1 is 2.36, b2 is 1.41, b3 is 5.28, and b4 is 1.55; thus, the operation value of each operator can be obtained. It should be noted that the operation value refers to the operation intensity of the operator in the area he has been involved in. The larger the operation value, the greater the work intensity of the operator, and the greater the impact of the operator on the environment of the detection area;

[0045] The smart camera is used to identify whether the workers in the area are wearing protective equipment. The total number of workers in the area is F1, of which the number of workers wearing protective equipment is set to F2, and the number of workers not wearing protective equipment is set to F3; the values ​​of the total number of workers in the area F1, the number of workers wearing protective equipment F2, and the number of workers not wearing protective equipment F3 are substituted into the set formula The protection value Fi is calculated; w1 and w2 are the set weight factors, w1 is 1.21, and w2 is 1.46; thus, the protection value of each operator can be obtained. It should be noted that the protection value refers to the protection value of the operators in the area. The lower the protection value, the greater the corresponding ventilation intensity, and the higher the protection value, the higher the corresponding ventilation intensity;

[0046] Substitute the operating value Gji and the protection value Fi into the set formula The operation impact index Zi is calculated; where e is a natural constant, and c1 and c2 are set weight factors; thus, the operation impact index Zi of each area can be obtained. It should be noted that the greater the operation impact index in the area, the greater the ventilation intensity, and the smaller the operation impact index in the area, the smaller the ventilation intensity;

[0047] Set a threshold value of the operation impact index. If the operation impact index Zi of the current monitoring area is greater than the operation impact index threshold, the operation impact index of the current monitoring area is abnormal, which is recorded as the preliminary abnormal operation impact index, and the abnormal operation impact index is sent to the ventilation adjustment module; identify the area where the preliminary abnormal operation impact index is located, and record the location of the area as the monitoring abnormal location, and count the number of monitoring abnormal locations; it should be noted that the operation impact index is proportional to the ventilation intensity. The larger the operation impact index, the greater the ventilation intensity, and the smaller the operation impact index, the smaller the ventilation intensity; and send the above operation impact index to the server;

[0048] The operation monitoring module can quickly identify abnormalities in the working environment by monitoring the activities of workers in the area and their impact on the environment, so as to adjust the ventilation intensity in time; by calculating the operation value and protection value, it can accurately evaluate the operation intensity and ventilation demand in the area. Effective ventilation adjustment can optimize energy utilization and reduce energy consumption and resource waste while ensuring air quality; by accurately evaluating the working environment, it can ensure that the ventilation system operates in the best condition, which not only improves ventilation efficiency but also improves the safety of operations.

[0049] The ventilation control module conducts a comprehensive analysis based on the received air impact index and operation impact index, and controls the ventilation intensity of the building accordingly to achieve energy-saving and comfortable ventilation effects; the specific steps are:

[0050] Step 1: Substitute the values ​​of the air impact index Yi and the work impact index Zi into the set formula The adjustment value Zi is calculated; d1 and d2 are the set weight factors, d1 is 3.22, and d2 is 2.58; thus, the adjustment value of each area can be obtained; an adjustment interval is set, when the adjustment value is greater than the set maximum value of the adjustment interval, it is matched to the first level ventilation, when the adjustment value is within the set adjustment interval, it is matched to the second level ventilation, and when the adjustment value is less than the set minimum value of the adjustment interval, it is matched to the third level ventilation; it should be noted that the first level ventilation, the second level ventilation and the third level ventilation correspond to a ventilation frequency respectively;

[0051] Step 2: Control the ventilation equipment to operate according to the matched ventilation frequency and maintain a fixed operating time. It should be noted that the fixed operating time is set and adjusted by industry professionals based on the building structure and ventilation requirements.

[0052] Step 3: After maintaining the ventilation frequency for a fixed period of time, repeat the air quality monitoring module, operation monitoring module and ventilation adjustment module; it should be noted that when the air impact index rises sharply, the ventilation adjustment module directly adjusts the equipment ventilation to a higher ventilation level; when the equipment operates for a fixed period of time according to the matched ventilation frequency, re-monitor the data according to the above modules. If the monitored data does not increase significantly but is slowly decreasing, continue to maintain the ventilation frequency until the ventilation level and ventilation frequency are reduced; when the equipment operates for a fixed period of time according to the matched ventilation frequency, re-monitor the data according to the above modules. If the data tends to be within the normal range or improves slowly, the ventilation level and frequency are gradually reduced to save energy and maintain a comfortable indoor environment; the ventilation adjustment module continuously adjusts the ventilation strategy according to the real-time data of the monitoring module to ensure the continuous optimization of the air quality inside the building and the effective use of energy;

[0053] By adjusting the values ​​of the comprehensive air impact index and the operation impact index, it is possible to accurately control the ventilation intensity of the building and adjust the operating frequency and duration of the ventilation equipment, which helps to optimize energy utilization and reduce unnecessary energy consumption. This ventilation adjustment based on real-time data and comprehensive analysis effectively improves the energy efficiency and ventilation efficiency of the building, while also achieving energy conservation and environmental protection, and ensuring the quality and safety of the living and working environment.

[0054] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A comprehensive building energy-saving ventilation system, characterized in that: include: Air quality monitoring module, operation monitoring module, server and ventilation adjustment module; The air quality monitoring module connects to the sensors in the building to obtain air quality information and sends it to the server for storage; the air quality information includes the air temperature in the area, the air humidity in the area, the particulate matter concentration in the area, the oxygen concentration and the carbon dioxide concentration in the area; the specific steps are as follows: The building area is evenly divided and several monitoring areas are set; the temperature of each monitoring area is obtained through the temperature sensor, and then the temperature of each monitoring area in different time periods is monitored to obtain the temperature of each monitoring area in different time periods in the area, and the average value is calculated to obtain the average temperature of each monitoring area; Repeat the above steps to obtain the humidity and average humidity of each monitoring area, the particle concentration and average particle concentration of each monitoring area, the oxygen concentration and average oxygen concentration of each monitoring area, and the carbon dioxide concentration and average carbon dioxide concentration of each monitoring area through the humidity sensor, the particulate matter sensor, the oxygen sensor and the carbon dioxide sensor; normalize the values ​​of the above data to obtain the air impact index of the current monitoring area; Set an air impact index threshold. If the air impact index of the current monitoring area is greater than the air impact index threshold, the air impact index of the current monitoring area is abnormal, which is recorded as the preliminary abnormal air impact index, and the abnormal air impact index is sent to the ventilation adjustment module; identify the area where the preliminary abnormal air impact index is located, and record the location of the area as the abnormal monitoring location, and count the number of abnormal monitoring locations; and send the above air impact index to the server; The operation monitoring module monitors the activities of the operators in the area and their impact on the environment, analyzes them to obtain the operator operation impact index in the area, and sends it to the server for storage; The ventilation control module conducts a comprehensive analysis based on the received air impact index and operation impact index, and controls the ventilation intensity of the building accordingly.

2. A comprehensive building energy-saving ventilation system according to claim 1, characterized in that: The operation monitoring module analyzes the operation impact index by monitoring the activities of operators and environmental impacts; the specific steps are: The number of production workers in the area is monitored through smart cameras and infrared sensors; the length of time each worker stays in the area is obtained by identifying the numbers of the production workers; Count the number of areas involved by the operator and the corresponding air impact values ​​of the areas; Compare and analyze the air impact value with the set air impact index interval. When the air impact value is greater than the maximum value in the set air impact index interval, the area corresponding to the air impact value is recorded as a severe air impact monitoring area; when the air impact value is within the set air impact index interval, the area corresponding to the air impact value is recorded as a moderate air impact monitoring area; when the air impact value is less than the minimum value in the set air impact index interval, the area corresponding to the air impact value is recorded as a mild air impact monitoring area; count the number of severe air impact monitoring areas, moderate air impact monitoring areas and mild air impact monitoring areas respectively; The values ​​of the severe air impact monitoring area, the values ​​of the moderate air impact monitoring area, the values ​​of the light air impact monitoring area, the values ​​of the length of time the operator stays in the area, and the regional impact values ​​are normalized to obtain the operation value; thus, the operation value of each operator can be obtained; Through the intelligent camera, it is identified whether the operators in the area are wearing protective equipment, the total number of operators in the area, the number of operators wearing protective equipment and the number of operators not wearing protective equipment; the above values ​​are normalized to obtain the protection value; thus, the protection value of each operator can be obtained; The operation value and the protection value are normalized to obtain the operation impact index; thus, the operation impact index of each area can be obtained; Set a job impact index threshold. If the job impact index of the current monitoring area is greater than the job impact index threshold, the job impact index of the current monitoring area is abnormal, which is recorded as the preliminary abnormal job impact index, and the abnormal job impact index is sent to the ventilation adjustment module; identify the area where the preliminary abnormal job impact index is located, and record the location of the area as the monitoring abnormal location, and count the number of monitoring abnormal locations; and send the above job impact index to the server.

3. A comprehensive building energy-saving ventilation system according to claim 1, characterized in that: The ventilation adjustment module controls the ventilation intensity of the building through comprehensive analysis based on the air impact index and the operation impact index; the specific steps are: Step 1: Normalize the values ​​of the air impact index and the work impact index to obtain the adjustment value; thereby, the adjustment value of each area may be obtained; set an adjustment interval, when the adjustment value is greater than the set maximum value of the adjustment interval, it is matched to the first-level ventilation, when the adjustment value is within the set adjustment interval, it is matched to the second-level ventilation, when the adjustment value is less than the set minimum value of the adjustment interval, it is matched to the third-level ventilation; the first-level ventilation, the second-level ventilation and the third-level ventilation each correspond to a ventilation frequency; Step 2: Control the ventilation equipment to operate according to the matched ventilation frequency and maintain a fixed operating time; Step 3: After maintaining the ventilation frequency for a fixed duration, repeat the air quality monitoring module, operation monitoring module and ventilation adjustment module; when the equipment has been running for a fixed duration according to the matched ventilation frequency, re-monitor the data according to the above modules. If the monitored data has not increased significantly but is slowly decreasing, continue to maintain the ventilation frequency until the ventilation level and ventilation frequency are reduced; when the equipment has been running for a fixed duration according to the matched ventilation frequency, re-monitor the data. If the data tends to be within the normal range or is slowly improving, gradually reduce the ventilation level and frequency.

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