An intelligent air purification system for delivery room

Abstract

The present application relates to the technical field of air purification, and particularly relates to an intelligent air purification system for a delivery room, which comprises: air purification modules uniformly distributed on the ceiling of the delivery room; a data acquisition module comprising a concentration acquisition unit for acquiring the concentration of microbial particles in the delivery room, an infrared image acquisition unit for acquiring an overhead infrared image of the delivery room, and a duration acquisition unit for acquiring the duration for which the delivery room door is opened; a control module for determining whether the air purification of the delivery room meets preset standards according to clean and stable characteristic parameters of the air in the delivery room, and for determining whether the improvement of the air purification of the delivery room meets preset standards according to air improvement characteristic values of the delivery room; and a strategy adjustment module for determining corresponding air purification adjustment strategies according to the type of environmental interference in the delivery room. The present application improves the air purification efficiency of the delivery room.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air purification, in particular to an intelligent air purification system for a delivery room. BACKGROUND

[0002] The delivery room, as the core functional area of the hospital's obstetrics and gynecology department, is a key place for pregnant women to give birth, newborns to be born, and postpartum observation. It usually contains three functional subareas: the waiting room, the delivery room, and the postpartum observation room. Among them, the waiting room is the area where pregnant women stay the longest before delivery, with strong personnel dynamics, and the mother and baby group has very high requirements for air cleanliness.

[0003] Air purification is a core link to ensure the medical safety of the delivery room. On the one hand, bacteria, viruses, and other microorganisms are prone to breed in the delivery room, and if the air cleanliness does not meet the standards, it may lead to serious complications such as infection during the puerperium of pregnant women. On the other hand, the personnel flow in the waiting room (such as medical operations, family visits) and the frequent opening of the door body are easy to introduce outdoor pollutants, and personnel activities will disturb the indoor airflow, damaging the original clean environment and further increasing the risk of infection. Therefore, in order to meet the environmental cleanliness requirements of the delivery room, the delivery room must be equipped with a professional air purification system.

[0004] Chinese patent application publication No. CN114110905A discloses a medical air purification engineering system, relating to the technical field of purification engineering, which includes a functional room, a purification device, and a flow guide device. The purification device is arranged on the top wall inside the functional room, and an air induction fan is arranged in the purification device. The flow guide device includes a plurality of parallel flow guide plates arranged on the top wall inside the functional room and perpendicular to the top wall of the functional room. Adjacent two flow guide plates form a flow guide groove, which is in communication with the air inlet end of the purification device. The air outlet end of the purification device is in communication with the inside of the functional room.

[0005] It can be seen that the above technical solution only realizes air circulation through fixed purification devices, without considering the influence of indoor personnel dynamics in the delivery room on air purification in the delivery room, thereby causing the problem of poor air purification efficiency. SUMMARY

[0006] Therefore, the present application provides an intelligent air purification system for a delivery room to overcome the problem in the prior art that only fixed purification devices are used to realize air circulation, without considering the influence of indoor personnel dynamics in the delivery room on air purification in the delivery room, thereby causing poor air purification efficiency.

[0007] To achieve the above purpose, the present application provides an intelligent air purification system for a delivery room, which comprises:

[0008] An air purification module is uniformly distributed on the ceiling of the delivery room, which includes a fresh air introduction unit and an air circulation and filtration unit.

[0009] a data acquisition module connected with the air purification module, comprising a concentration acquisition unit configured to acquire a concentration of microbial particles in the delivery room, an infrared image acquisition unit configured to acquire an overhead infrared image of the delivery room, and a duration acquisition unit configured to acquire a duration of opening of a door of the delivery room;

[0010] a control module connected with the air purification module and the data acquisition module respectively, configured to determine whether air purification of the delivery room meets a preset standard according to a clean stability characteristic parameter of air in the delivery room, and to determine whether improvement of the air purification of the delivery room meets a preset standard according to an air improvement characteristic value of the delivery room;

[0011] a strategy adjustment module connected with the air purification module and the control module respectively, configured to determine a corresponding air purification adjustment strategy according to a type of environmental disturbance of the delivery room.

[0012] Further, under the condition that the air purification module operates in an initial air purification mode for a first preset duration, the control module determines whether the air purification of the delivery room meets a preset standard according to a clean stability characteristic parameter of air in the delivery room, wherein,

[0013] if the clean stability characteristic parameter is less than a preset clean stability characteristic parameter, it is determined that the air purification of the delivery room meets the preset standard, and the initial air purification mode is continued to operate for a second preset duration;

[0014] if the clean stability characteristic parameter is greater than or equal to the preset clean stability characteristic parameter, it is determined that the air purification of the delivery room does not meet the preset standard, and a type of environmental disturbance of the delivery room is determined according to an environmental disturbance characteristic value of the delivery room;

[0015] the initial air purification mode is that the fresh air introduction unit operates at a preset fresh air volume, and the air circulation filtration unit operates at a preset circulating air speed.

[0016] Further, the clean stability characteristic parameter is a ratio of a standard deviation of a microbial concentration to an arithmetic mean of the microbial concentration in the delivery room, wherein a plurality of the microbial concentrations are acquired at a preset acquisition interval within a first preset duration.

[0017] Further, the control module determines the type of environmental disturbance of the delivery room according to the environmental disturbance characteristic value of the delivery room, wherein,

[0018] if the environmental disturbance characteristic value is less than a first preset environmental disturbance threshold, the type of environmental disturbance is determined to be a first type of environmental disturbance;

[0019] If the environmental interference characterization value is greater than or equal to the first preset environmental interference threshold and less than the second preset environmental interference threshold, then the environmental interference type is determined to be Class II environmental interference.

[0020] If the environmental interference characterization value is greater than or equal to the second preset environmental interference threshold, then the environmental interference type is determined to be Class III environmental interference.

[0021] Furthermore, the environmental interference characterization value is determined by the maximum value, minimum value, average value of the number of people in the delivery room, the maximum opening time of the delivery room door, and the effective activity area of ​​the people in the room, which are collected at preset collection intervals within a first preset time period; wherein, the effective activity area of ​​the people in the room is the maximum value of the coverage area of ​​several people collected at preset collection intervals within the first preset time period, and the coverage area of ​​the people is determined by the area of ​​the minimum bounding rectangle of the position coordinates of all the people in the room.

[0022] Furthermore, the strategy adjustment module determines a corresponding air purification adjustment strategy based on the type of environmental interference in the delivery room, wherein,

[0023] If the type of environmental interference is one, then the preset circulating wind speed is increased according to the difference between the first preset environmental interference threshold and the environmental interference characterization value;

[0024] If the type of environmental interference is Class II, the preset fresh air volume of the personnel gathering area is increased according to the difference between the environmental interference characterization value and the second preset environmental interference threshold.

[0025] If the environmental interference type is classified as Class III, an audiovisual alarm will be issued to medical staff, prompting them to perform manual intervention and maintaining the initial air purification mode.

[0026] Furthermore, the personnel gathering area is determined based on the infrared image of the delivery room from above, where the personnel density is greater than or equal to a preset personnel density. The locations of several of these areas correspond to the locations of several of the air purification modules.

[0027] Furthermore, the strategy adjustment module has several wind speed adjustment methods for increasing the preset circulating wind speed, and each wind speed adjustment method increases the preset circulating wind speed by a different amount.

[0028] Furthermore, after the air purification module has run for a second preset period of time, the control module determines whether the improvement in air purification in the delivery room meets a preset standard based on the air improvement characterization value.

[0029] If the air improvement characterization value is less than the preset air improvement threshold, it is determined that the improvement of air purification in the delivery room does not meet the preset standard, and the second preset duration is increased according to the difference between the preset air improvement threshold and the air improvement characterization value.

[0030] If the air improvement characterization value is greater than or equal to the preset air improvement threshold, it is determined that the air purification improvement in the delivery room meets the preset standard, and the air purification module is adjusted to the initial air purification mode.

[0031] The air improvement characterization value is determined by the concentration of microbial particles collected before the air purification adjustment strategy is implemented and the concentration of microorganisms after the adjustment strategy is implemented and a second preset time period has elapsed.

[0032] Furthermore, the increase in the second preset duration is positively correlated with the air improvement difference, wherein the air improvement difference is the difference between the preset air improvement threshold and the air improvement characterization value.

[0033] Compared with existing technologies, the advantages of this invention are as follows: Through modular design, it can perceive the flow of people and the opening and closing of delivery room doors in real time, and quantify their impact on air cleanliness stability, providing comprehensive data support for intelligent decision-making. The control module makes dual judgments based on cleanliness stability parameters and improvement parameters to ensure the accuracy of purification effect assessment. It automatically identifies interference levels and no longer uses a fixed purification mode, but intelligently triggers differentiated and targeted purification strategies according to different interference types, ensuring the cleanliness and stability of the air in which mothers and infants are located and reducing the risk of infection. The strategy adjustment module dynamically matches purification strategies based on environmental interference types, enabling the system to have adaptive control capabilities, thereby improving air purification efficiency.

[0034] Furthermore, this invention establishes a baseline operation and judgment process in the initial air purification mode. After a first preset period of stable operation, the cleanliness stability characterization parameters are evaluated to effectively distinguish whether the air purification in the production room meets the preset standards. If it meets the standards, operation continues; if it does not, interference type identification is initiated. This design avoids frequent switching of the system's operating mode, ensuring the continuity of the basic purification effect. At the same time, it can promptly initiate high-level response measures when anomalies occur, enhancing the stability of the system operation and thus improving the intelligence level of the air purification system.

[0035] Furthermore, this invention sets two preset environmental interference thresholds to clearly classify environmental interference into three categories and matches differentiated adjustment strategies accordingly. For Category I interference, pollutants are rapidly diluted by increasing the circulating air velocity; for Category II interference, the fresh air volume is increased in densely populated areas for localized enhanced purification; and for Category III severe interference, an alarm is issued to prompt manual intervention. This strategy system solves the problem of the existing system's "one-size-fits-all" approach to interference handling, ensuring that the purification effect, energy consumption, and maternal and infant safety can be optimally balanced in different interference scenarios, thereby ensuring the reliability of the air purification system.

[0036] Furthermore, by introducing a feedback mechanism based on air improvement characterization values, the system will re-detect whether the purification effect meets expectations after the adjustment strategy is implemented; if it does not meet the standard, the enhanced purification time will be automatically extended; if it meets the standard, it will return to the initial mode. This closed-loop control ensures the effectiveness of the purification measures and can automatically correct deviations, enabling the system to have the ability to self-optimize and continuously guarantee purification quality, thereby improving the operating efficiency of the air purification system.

[0037] Furthermore, by setting the increase of the second preset duration to be positively correlated with the air improvement difference, the greater the air improvement difference, the greater the increase of the duration, which can provide more sufficient purification time for scenarios with poor purification effect, thereby achieving precise control over the increase of the second preset duration. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the module connection of an intelligent air purification system for a delivery room according to an embodiment of the present invention;

[0039] Figure 2 This is a flowchart illustrating how to determine whether the air purification in the delivery room meets preset standards, as per an embodiment of the present invention.

[0040] Figure 3 This is a flowchart illustrating the process of determining the type of environmental disturbance in the delivery room according to an embodiment of the present invention;

[0041] Figure 4 This is a flowchart for determining whether the improvement in air purification in the delivery room meets a preset standard, as described in an embodiment of the present invention. Detailed Implementation

[0042] To make the objectives and advantages of the present invention clearer, the present invention will be further described below with reference to embodiments; it should be understood that the specific embodiments described herein are merely for explaining the present invention and are not intended to limit the present invention.

[0043] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0044] It should be noted that the data in this embodiment are all derived from a comprehensive analysis and evaluation of historical test data and corresponding historical test results from the three months prior to this test. Those skilled in the art will understand that the determination of the above-mentioned parameters for any single item in this invention can be achieved by selecting the value with the highest percentage based on the data distribution as the preset standard parameter, using weighted summation to obtain the value as the preset standard parameter, substituting each historical data point into a specific formula and using the value obtained from that formula as the preset standard parameter, or other selection methods, as long as the invention can clearly define different specific situations in the single-item judgment process through the obtained values.

[0045] Please see Figure 1 , Figure 2 , Figure 3 as well as Figure 4 The diagrams shown are: a module connection diagram of an intelligent air purification system for a delivery room according to an embodiment of the present invention; a flowchart of an embodiment of the present invention for determining whether the air purification in the delivery room meets a preset standard; a flowchart of an embodiment of the present invention for determining the type of environmental interference in the delivery room; and a flowchart of an embodiment of the present invention for determining whether the improvement of the air purification in the delivery room meets a preset standard.

[0046] This invention provides an intelligent air purification system for a delivery room, comprising:

[0047] The air purification module is evenly distributed on the ceiling of the delivery room, including a fresh air introduction unit and an air circulation and filtration unit;

[0048] The data acquisition module, which is connected to the air purification module, includes a concentration acquisition unit for acquiring the concentration of microbial particles in the delivery room, an infrared image acquisition unit for acquiring a top-view infrared image of the delivery room, and a duration acquisition unit for acquiring the duration of the delivery room door being open.

[0049] The control module is connected to the air purification module and the data acquisition module respectively, and is used to determine whether the air purification of the delivery room meets the preset standard based on the cleanliness and stability characterization parameters of the air in the delivery room, and to determine whether the improvement of the air purification of the delivery room meets the preset standard based on the air improvement characterization value of the delivery room.

[0050] The strategy adjustment module is connected to both the air purification module and the control module, and is used to determine the corresponding air purification adjustment strategy based on the type of environmental interference in the delivery room.

[0051] It should be noted that the data in this embodiment are all results obtained through preliminary experiments before this test using the method described in this invention. Each preset value can be adjusted according to the specific application, as long as the method described in this invention can clearly define different specific situations in the single-item judgment process through the acquired values. The preset values ​​set in this embodiment are all obtained from preliminary experiments, including the correction coefficients, which were also selected through experimental verification.

[0052] Specifically, there are no restrictions on the specific structure of the control module and the strategy adjustment module. They themselves and their units can be composed of logic components, including field-programmable components, computers, or microprocessors in computers.

[0053] Specifically, the concentration acquisition unit is a microbial detector; the infrared image acquisition unit is a passive thermal imaging camera installed in the center of the delivery room ceiling, which only detects the infrared radiation emitted by the human body; and the duration acquisition unit is an embedded timer, which works in conjunction with the door magnetic sensor signal installed on the delivery room door frame to record the duration of the delivery room door being open.

[0054] Specifically, the air purification module also includes an airflow guiding unit, a disinfection unit, and an exhaust unit.

[0055] In this embodiment, the fresh air introduction unit for introducing fresh air from the outside includes a fresh air fan, a damper, a fresh air filter, and a duct connected to the outside; the air circulation filtration unit for circulating and filtering indoor air includes an internal circulation fan and a filter; the airflow guiding unit for forming directional airflow includes an air outlet and guide vanes installed at the air outlet; the disinfection unit for sterilizing air is a plasma air sterilizer; and the exhaust unit for discharging indoor air to the outside is an exhaust fan.

[0056] In this embodiment, the air outlets of the air purification module are evenly arranged on the ceiling of the delivery room. The air outlets of the fresh air introduction unit, air circulation filtration unit, disinfection unit, and airflow guiding unit are connected through a shared air supply duct. After disinfection and filtration, the fresh air is mixed with the internally circulated filtered air in the air supply duct and then sent into the room through the ceiling air outlets. The exhaust unit is independently placed in the ceiling and connected to the outside through a dedicated exhaust duct. It is not shared with the air supply duct to avoid airflow interference.

[0057] In this embodiment, for the delivery room, each air purification module is evenly distributed on the ceiling of the delivery room with a spacing of 2m.

[0058] Specifically, when the air purification module operates in the initial air purification mode for a first preset duration of 45 minutes, the control module determines whether the air purification in the delivery room meets preset standards based on the cleanliness and stability characteristics of the air in the delivery room.

[0059] If the cleanliness and stability characterization parameter is less than the preset cleanliness and stability characterization parameter of 0.15, it is determined that the air purification of the delivery room meets the preset standard, and it continues to run in the initial air purification mode for a second preset time.

[0060] If the cleanliness and stability characterization parameter is greater than or equal to the preset cleanliness and stability characterization parameter, it is determined that the air purification of the delivery room does not meet the preset standard, and the type of environmental interference in the delivery room is determined according to the environmental interference characterization value of the delivery room.

[0061] The initial air purification mode is that the fresh air intake unit uses a preset fresh air volume of 120m³. 3 The air circulation and filtration unit operates at a preset circulation speed of 2m / s.

[0062] In this embodiment, the preset cleanliness and stability characterization parameter is set to 0.15. Based on historical data from 50 sets of delivery room purification experiments, the air hygiene standard for all delivery rooms is less than 200 CFU / m³. 3 In the sample, more than 80% of the samples had a clean stability characterization parameter less than or equal to 0.15. Therefore, the preset value of the clean stability characterization parameter is 0.15. However, the above value is not limited to this. Those skilled in the art can also adjust the value according to actual needs.

[0063] Specifically, when the cleanliness and stability characterization parameter is less than the preset cleanliness and stability characterization parameter, it is considered that the microbial concentration fluctuation is very small, the environment is in a stable and clean state, the environment's self-cleaning capacity is basically balanced with the pollution input, and no additional intervention is required; if the cleanliness and stability characterization parameter is greater than or equal to the preset cleanliness and stability characterization parameter, it indicates that the concentration fluctuation has increased significantly, suggesting that a new pollution source or interference has appeared.

[0064] Specifically, the cleanliness and stability characterization parameter is the ratio of the standard deviation of the microbial concentration in the delivery room to the arithmetic mean of the microbial concentration. In this embodiment, seven microbial concentration detection points are evenly distributed in the waiting room of the delivery room. The microbial concentration is obtained by collecting data at a preset collection interval of 3 minutes within a first preset time of 45 minutes.

[0065] Specifically, the control module determines the type of environmental interference in the delivery room based on the environmental interference characterization values ​​of the delivery room, wherein,

[0066] If the environmental interference characterization value is less than the first preset environmental interference threshold of 0.3, then the environmental interference type is determined to be Class I environmental interference.

[0067] If the environmental interference characterization value is greater than or equal to the first preset environmental interference threshold and less than the second preset environmental interference threshold of 0.8, then the environmental interference type is determined to be Class II environmental interference.

[0068] If the environmental interference characterization value is greater than or equal to the second preset environmental interference threshold, then the environmental interference type is determined to be Class III environmental interference.

[0069] Specifically, the first preset environmental interference threshold ranges from [0.2, 0.4], and the second preset environmental interference threshold ranges from [0.7, 0.9]. Preferably, the first preset environmental interference threshold is 0.3 and the second preset environmental interference threshold is 0.8.

[0070] Specifically, the environmental disturbance characterization value is calculated using the following formula:

[0071] ,

[0072] In the formula, P represents the environmental disturbance characterization value; α represents the first weight, set to α=0.4; β represents the second weight, set to β=0.4; λ represents the third weight, set to λ=0.2; N max N represents the maximum number of people indoors; min N represents the minimum number of people indoors; avg T1 represents the average number of people in the room; T0 represents the maximum opening time of the delivery room door; T0 represents the preset maximum opening time of the delivery room door, set to T0=35s; S1 represents the effective activity area of ​​people in the room; S0 represents the total area of ​​the delivery room; α+β+λ=1.

[0073] Specifically, the process of obtaining the personnel coverage area includes:

[0074] Using an infrared thermal imaging camera, all people indoors are identified, and the planar coordinates of each person are obtained;

[0075] Find the maximum and minimum values ​​of the X-axis coordinates and the Y-axis coordinates of all personnel, and use these four values ​​to form a rectangle with the smallest area that can enclose all personnel.

[0076] The area of ​​the smallest rectangle is the area covered by people at the current moment.

[0077] Specifically, the strategy adjustment module determines a corresponding air purification adjustment strategy based on the type of environmental interference in the delivery room, wherein...

[0078] If the type of environmental disturbance is Class I, such disturbance usually originates from the slight activities of a few people indoors (such as a postpartum woman walking around briefly), the pollution source is generated indoors and is relatively evenly distributed, and no large amount of external pollutants are introduced, then the preset circulating wind speed is increased according to the difference between the first preset environmental disturbance threshold and the environmental disturbance characterization value.

[0079] If the environmental interference type is Class II, which is usually caused by an increase in the number of people or the opening of doors, introducing unfiltered outdoor air, then the preset fresh air volume of the personnel gathering area is increased according to the difference between the environmental interference characterization value and the second preset environmental interference threshold.

[0080] If the environmental interference type is classified as Category III, the interference means that an abnormal or severe situation has occurred in the delivery room (such as multi-person consultation or emergency medical treatment). In this case, an audio-visual alarm will be issued to the medical staff, prompting them to make manual intervention and maintain the initial air purification mode.

[0081] Specifically, the personnel density determined based on the overhead infrared image of the delivery room is greater than or equal to a preset personnel density of 0.15 people / m². 2 The areas are defined as the personnel gathering areas, wherein several of the areas correspond to the locations of several of the air purification modules.

[0082] Specifically, the strategy adjustment module has several wind speed adjustment methods for increasing the preset circulating wind speed, among which,

[0083] If the environmental interference deviation value is less than the first preset environmental interference deviation value of 0.08, then the preset circulating wind speed is increased to the corresponding value using the first wind speed adjustment coefficient of 1.04;

[0084] If the environmental interference deviation value is greater than or equal to the first preset environmental interference deviation value and less than the second preset environmental interference deviation value of 0.22, then the preset circulating wind speed is increased to the corresponding value using the second wind speed adjustment coefficient of 1.06.

[0085] If the environmental interference deviation value is greater than or equal to the second preset environmental interference deviation value, then the preset circulating wind speed is increased to the corresponding value using the third wind speed adjustment coefficient of 1.08.

[0086] The environmental interference deviation value is the difference between the first preset environmental interference threshold and the environmental interference characterization value.

[0087] Specifically, the increase in the preset fresh air volume of the personnel gathering area is positively correlated with the difference between the environmental interference characterization value and the second preset environmental interference threshold. The positive correlation can be linear or nonlinear. The linear slope of the linear positive correlation is not specifically limited. It can be understood that the greater the difference between the environmental interference characterization value and the second preset environmental interference threshold, the greater the increase in the preset fresh air volume of the personnel gathering area.

[0088] Specifically, after the air purification module runs for a second preset time of 30 minutes, the control module determines whether the improvement in air purification in the delivery room meets a preset standard based on air improvement characterization values.

[0089] If the air improvement characterization value is less than the preset air improvement threshold of 0.35, it is determined that the improvement of air purification in the delivery room does not meet the preset standard, and the second preset duration is increased according to the difference between the preset air improvement threshold and the air improvement characterization value.

[0090] If the air improvement characterization value is greater than or equal to the preset air improvement threshold, it is determined that the air purification improvement in the delivery room meets the preset standard, and the air purification module is adjusted to the initial air purification mode.

[0091] In this embodiment, the preset air improvement threshold is set to 0.35. Statistical analysis based on 50 historical sets of maternity ward purification experimental data shows that when the air improvement indicator value reaches 35%, 70% of the maternity ward air quality can stably control the microbial concentration to less than or equal to 200 CFU / m³. 3 Within the safety standard range, the preset air improvement threshold is set to 0.35. However, the above value is not limited to this, and those skilled in the art can adjust the value according to actual needs.

[0092] The process of obtaining the air quality improvement characterization values ​​includes:

[0093] At the initial moment of implementing the air purification adjustment strategy, the average concentration of microbial particles in the delivery room was collected using a microbial detector and recorded as the initial concentration.

[0094] The corresponding air purification adjustment strategy is activated. After the second preset time of 30 minutes, the average concentration of microbial particles is collected at the end time and recorded as the end concentration.

[0095] The difference between the initial concentration and the final concentration is recorded as the concentration deviation value;

[0096] The ratio of the concentration deviation value to the initial concentration is recorded as the air improvement characterization value.

[0097] Specifically, the increase in the second preset duration is positively correlated with the air improvement difference. The positive correlation can be linear or nonlinear. The slope of the linear positive correlation is not specifically limited. It can be understood that the larger the air improvement difference, the larger the increase in the second preset duration. The air improvement difference is the difference between the preset air improvement threshold and the air improvement characterization value.

[0098] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An intelligent air purification system for delivery rooms, characterized in that, include: The air purification module is evenly distributed on the ceiling of the delivery room, including a fresh air introduction unit and an air circulation and filtration unit; The data acquisition module, which is connected to the air purification module, includes a concentration acquisition unit for acquiring the concentration of microbial particles in the delivery room, an infrared image acquisition unit for acquiring a top-view infrared image of the delivery room, and a duration acquisition unit for acquiring the duration of the delivery room door being open. The control module is connected to the air purification module and the data acquisition module respectively, and is used to determine whether the air purification of the delivery room meets the preset standard based on the cleanliness and stability characterization parameters of the air in the delivery room, and to determine whether the improvement of the air purification of the delivery room meets the preset standard based on the air improvement characterization value of the delivery room. The strategy adjustment module is connected to the air purification module and the control module respectively, and is used to determine the corresponding air purification adjustment strategy according to the type of environmental interference in the delivery room. Under the condition that the air purification module operates in the initial air purification mode for a first preset time, the control module determines whether the air purification in the delivery room meets the preset standard based on the cleanliness and stability characteristics of the air in the delivery room. If the cleanliness and stability characterization parameter is less than the preset cleanliness and stability characterization parameter, it is determined that the air purification of the delivery room meets the preset standard, and it continues to run in the initial air purification mode for a second preset time. If the cleanliness and stability characterization parameter is greater than or equal to the preset cleanliness and stability characterization parameter, it is determined that the air purification of the delivery room does not meet the preset standard, and the type of environmental interference in the delivery room is determined according to the environmental interference characterization value of the delivery room. The initial air purification mode is that the fresh air introduction unit operates with a preset fresh air volume, and the air circulation filtration unit operates with a preset circulation speed. The cleanliness and stability characterization parameter is the ratio of the standard deviation of the microbial concentration in the delivery room to the arithmetic mean of the microbial concentration, wherein a number of the microbial concentrations are obtained by collecting samples at preset intervals within a first preset time period. The control module determines the type of environmental interference in the delivery room based on the environmental interference characterization values ​​of the delivery room, wherein, If the environmental interference characterization value is less than the first preset environmental interference threshold, then the environmental interference type is determined to be a type of environmental interference. If the environmental interference characterization value is greater than or equal to the first preset environmental interference threshold and less than the second preset environmental interference threshold, then the environmental interference type is determined to be Class II environmental interference. If the environmental interference characterization value is greater than or equal to the second preset environmental interference threshold, then the environmental interference type is determined to be Class III environmental interference; The environmental interference characterization value is determined by the maximum, minimum, and average number of people in the delivery room, the maximum opening time of the delivery room door, and the effective activity area of ​​the people in the room, collected at preset collection intervals within a first preset time period. The effective activity area of ​​the people in the room is the maximum value of the coverage area of ​​several people collected at preset collection intervals within the first preset time period, and the coverage area of ​​the people is determined by the area of ​​the minimum bounding rectangle of the position coordinates of all the people in the room. The strategy adjustment module determines a corresponding air purification adjustment strategy based on the type of environmental interference in the delivery room, wherein... If the type of environmental interference is one, then the preset circulating wind speed is increased according to the difference between the first preset environmental interference threshold and the environmental interference characterization value; If the type of environmental interference is Class II, the preset fresh air volume of the personnel gathering area is increased according to the difference between the environmental interference characterization value and the second preset environmental interference threshold. If the environmental interference type is classified as Class III, an audiovisual alarm will be issued to medical staff, prompting them to perform manual intervention and maintaining the initial air purification mode. The air improvement characterization value is determined by the concentration of microbial particles collected before the air purification adjustment strategy is implemented and the concentration of microorganisms after the adjustment strategy is implemented and a second preset time period has elapsed. The environmental disturbance characterization value is calculated using the following formula: ， In the formula, P represents the environmental disturbance characterization value; α represents the first weight, set to α=0.4; β represents the second weight, set to β=0.4; λ represents the third weight, set to λ=0.2; N max N represents the maximum number of people indoors; min N represents the minimum number of people indoors; avg T1 represents the average number of people in the room; T0 represents the maximum opening time of the delivery room door; T0 represents the preset maximum opening time of the delivery room door, set to T0=35s; S1 represents the effective activity area of ​​people in the room; S0 represents the total area of ​​the delivery room; α+β+λ=1.

2. The intelligent air purification system for delivery rooms according to claim 1, characterized in that, The personnel gathering area is determined based on the infrared image of the delivery room from above, where the personnel density is greater than or equal to the preset personnel density. The locations of several of these areas correspond to the locations of several of the air purification modules.

3. The intelligent air purification system for delivery rooms according to claim 2, characterized in that, The strategy adjustment module has several wind speed adjustment methods for increasing the preset circulating wind speed, and each wind speed adjustment method increases the preset circulating wind speed by a different amount.

4. The intelligent air purification system for delivery rooms according to claim 3, characterized in that, After the air purification module has been running for a second preset period of time, the control module determines whether the improvement in air purification in the delivery room meets a preset standard based on the air improvement characterization value. If the air improvement characterization value is less than the preset air improvement threshold, it is determined that the improvement of air purification in the delivery room does not meet the preset standard, and the second preset duration is increased according to the difference between the preset air improvement threshold and the air improvement characterization value. If the air improvement characterization value is greater than or equal to the preset air improvement threshold, it is determined that the air purification improvement in the delivery room meets the preset standard, and the air purification module is adjusted to the initial air purification mode.

5. The intelligent air purification system for delivery rooms according to claim 4, characterized in that, The increase in the second preset duration is positively correlated with the air improvement difference, wherein the air improvement difference is the difference between the preset air improvement threshold and the air improvement characterization value.

Images