Regional infectious disease close contact determination system and determination method

Abstract

The application discloses a regional infectious disease close contact person determination system, which comprises a regional information acquisition end, a wind direction monitoring device, a central server, a determination model and a determination method. The regional information acquisition end collects and uploads the basic information data and determination video data of all personnel in a region. The wind direction monitoring device is connected with intelligent ventilation equipment in the region, acquires wind direction monitoring information data and uploads the same. The central server receives the data uploaded by the regional information acquisition end and the wind direction monitoring device, generates an activity route map of each personnel in the region and associates the same with corresponding determination video data. The determination model generates close contact determination data based on determined positive patient information, determines the identity information of close contact persons according to the determination data, and effectively improves the accuracy of close contact person identity information acquisition, avoids affecting the life of irrelevant personnel and reduces the workload of epidemic prevention workers.

Description

Technical Field

[0001] This invention relates to the field of epidemic prevention and control technology, and in particular to a system and method for identifying close contacts of regional infectious diseases. Background Technology

[0002] Existing methods for identifying close contacts of infectious diseases often use a circle centered on a positive patient, designating all individuals within a predetermined radius as close contacts. While these methods were effective during the peak of an outbreak, as the number of positive patients has decreased significantly, using these methods would undoubtedly result in a large number of people being identified as close contacts, unnecessarily increasing the workload of epidemic prevention workers and impacting the lives of many.

[0003] New methods for identifying close contacts are needed to accurately determine their identities even with fewer misjudgments by unrelated individuals. Most infectious diseases (such as the novel coronavirus, hand-foot-mouth disease, and tuberculosis) are transmitted through the air via droplets from sneezing and coughing. Small areas such as shopping malls, conference halls, and hospitals have become key environments for disease transmission, making accurate identification of close contacts within a specific area particularly important. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides a system and method for identifying close contacts of regional infectious diseases within a designated area, enabling precise identification of close contacts.

[0005] A regional infectious disease close contact identification system includes:

[0006] The regional information collection terminal collects and uploads basic information data and judgment video data of all personnel within the region;

[0007] A wind direction monitoring device, which is connected to intelligent ventilation equipment in the area, acquires wind direction monitoring information data and uploads it;

[0008] The central server receives data uploaded by the regional information collection terminal and the wind direction monitoring device, generates an activity route map for each person in the region, and associates it with the corresponding judgment video data.

[0009] The determination model generates close contact determination data based on the identified positive patient information, and determines the identity information of close contacts based on the determination data.

[0010] It should be noted that the area specified in the present invention is a small area, which requires hardware conditions capable of acquiring basic information data and determining video data within the area.

[0011] The system of this invention collects information on all personnel within a designated area through a regional information collection terminal, records the airflow direction through a wind direction monitoring device, determines the flight trajectory of droplets, and analyzes, processes, and stores the data through a central server. The judgment model uses the acquired data information, combined with the corresponding data of positive patients, to screen close contacts within the area.

[0012] Furthermore, the area information collection terminal includes:

[0013] A fixed monitoring device, at least one of the fixed monitoring devices monitors personnel within a designated area and acquires first video data;

[0014] A wearable information collection device, which collects the wearer's identity information data and activity path data to generate basic information data of the wearer; monitors people near the wearer and obtains second video data;

[0015] The first video data and the second video data are associated to form the determination video data;

[0016] The determination data includes: personnel behavior information data and personnel video activity path information data.

[0017] Furthermore, the wind direction monitoring device includes:

[0018] The equipment operation monitoring module monitors the working status of the ventilation equipment connected to it and generates equipment operation information data, which includes: ventilation equipment start / stop information, ventilation mode information and ventilation direction information;

[0019] The wind direction detection module detects the actual wind direction in the area and generates air circulation data.

[0020] Specifically, air circulation data is optimized and adjusted based on the equipment's operational information data to generate wind direction monitoring data.

[0021] Furthermore, the activity route map is generated based on activity path data, personnel video activity path information data, and their corresponding time information.

[0022] Furthermore, the determination model extracts dangerous behavior segments from the determination video data corresponding to positive patients using preset dangerous feature determination criteria, retrieves the location information of positive patients in the activity route map corresponding to the dangerous behavior segments at the same time, and wind direction monitoring information data at the same time, to generate close contact determination data.

[0023] Furthermore, the determination model matches and filters the close contact determination data with the activity routes of all individuals except the positive patient in terms of time, space, and airflow direction to determine the identity information of close contacts and complete the determination of the identity information of close contacts.

[0024] The determination method based on the regional infectious disease close contact identification system includes the following steps:

[0025] S1. Collect and upload basic information data and judgment video data of all personnel in the area;

[0026] S2. Obtain and upload wind direction monitoring data within the area;

[0027] S3. Generate an activity route map for each person in the area based on the uploaded data and associate it with the corresponding judgment video data;

[0028] S4. Based on the confirmed positive patient information, generate close contact identification data, and determine the identity information of close contacts based on the identification data.

[0029] Furthermore, in step S1, the determination data includes: personnel behavior information data and personnel video activity path information data.

[0030] Furthermore, in step S2, the wind direction monitoring data is generated through the following steps:

[0031] S201. Monitor the working status of ventilation equipment and generate equipment working information data, including: start / stop information of ventilation equipment, ventilation mode information and ventilation direction information;

[0032] S202. Detect the actual wind direction in the area and generate air circulation data;

[0033] S203. Based on the equipment's operating information data, optimize and adjust the air circulation data to generate wind direction monitoring data.

[0034] Furthermore, in step S4, the determination of the identity information of the close contact includes the following steps:

[0035] S401. Extract dangerous behavior segments from the judgment video data corresponding to positive patients using preset dangerous characteristic judgment criteria;

[0036] S402. Retrieve the location information of positive patients from the activity route map corresponding to the same time as the dangerous behavior segment, as well as the wind direction monitoring information data at the same time, and generate close contact determination data.

[0037] S403. By matching and screening the close contact identification data with the activity route map of all persons except the positive patient in terms of time, space and air flow direction, the identity information of close contacts is determined, and the identification information of close contacts is completed.

[0038] Compared with the prior art, the advantages and beneficial effects of the present invention are as follows: The present invention obtains the activity trajectory of people in a designated area and screens other people in the area for close contacts based on the behavior of positive patients and the direction of air circulation, which effectively improves the accuracy of obtaining close contact identification information, avoids affecting the lives of unrelated people, and reduces the workload of epidemic prevention personnel. Attached Figure Description

[0039] Figure 1 This is a schematic block diagram of the system of the present invention;

[0040] Figure 2 This is a flowchart illustrating the method of the present invention. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0042] Example 1

[0043] To address the aforementioned problems, this invention provides a system and method for identifying close contacts of regional infectious diseases within a designated area, enabling precise identification of close contacts.

[0044] like Figure 1 As shown, the regional infectious disease close contact identification system includes:

[0045] The regional information collection terminal collects and uploads basic information data and judgment video data of all personnel within the region;

[0046] Wind direction monitoring device, which is connected to the intelligent ventilation equipment in the area, to acquire and upload wind direction monitoring information data;

[0047] The central server receives data uploaded from the regional information collection terminal and wind direction monitoring device, generates an activity route map for each person in the region, and associates it with the corresponding judgment video data.

[0048] The identification model generates close contact identification data based on the information of confirmed positive patients, and then identifies the close contacts based on the identification data.

[0049] It should be noted that the area specified in the present invention is a small area, which requires hardware conditions capable of acquiring basic information data and determining video data within the area.

[0050] The system of this invention collects information on all personnel within a designated area through a regional information collection terminal, records the airflow direction through a wind direction monitoring device, determines the flight trajectory of droplets, and analyzes, processes, and stores the data through a central server. The judgment model uses the acquired data information, combined with the corresponding data of positive patients, to screen close contacts within the area.

[0051] Specifically, the regional information collection terminals include:

[0052] A fixed monitoring device, at least one fixed monitoring device monitors personnel within a designated area and acquires first video data;

[0053] Wearable information collection device: This device collects the wearer's identity information and activity path data to generate basic information data of the wearer; it also monitors people near the wearer and obtains secondary video data.

[0054] Among them, the first video data and the second video data are correlated to form the judgment video data;

[0055] The data used for the determination includes: personnel behavior information data and personnel video activity path information data.

[0056] In practical applications, fixed monitoring devices use high-definition cameras to upload the acquired video data to a central server for data processing.

[0057] In practical applications, wearable information collection devices can be made using headwear such as hats equipped with high-definition cameras and positioning devices. Before wearing the device, the person inputs their identity data, and only needs to wear it at other times. When leaving the monitored area, the wearable information collection device can be removed.

[0058] Wearable information collection devices and fixed monitoring devices are used to monitor the behavior of people in the area. Through behavior recognition by the judgment module, dangerous behavior segments of positive patients are found. The wearable information collection devices and fixed monitoring devices complement each other in terms of blind spots, thereby increasing the possibility of obtaining dangerous behavior segments.

[0059] The wearable data collection device also includes a wireless communication module for uploading the collected data. The main functional modules of the wearable data collection device are a combination of common devices for data acquisition, which is not the focus of this invention and will not be elaborated upon here.

[0060] Specifically, wind direction monitoring devices include:

[0061] The equipment operation monitoring module monitors the working status of the ventilation equipment connected to it and generates equipment operation information data, including: ventilation equipment start / stop information, ventilation mode information and ventilation direction information.

[0062] The wind direction detection module detects the actual wind direction in the area and generates air circulation data.

[0063] Among them, air circulation data is optimized and adjusted based on equipment operating information data to generate wind direction monitoring data.

[0064] Due to varying time and environmental requirements, ventilation equipment within the same area operates in different modes, thus affecting airflow direction. Ventilation equipment such as air conditioners and fans, when operating at lower power, has less impact on airflow direction. Wind direction detection modules installed in the area may fail to identify subtle airflow directions or may make inaccurate judgments. Optimizing and adjusting airflow data based on equipment operating information can accurately determine the direction of airflow. It should be noted that if the wind direction detection module cannot detect any airflow, it is considered that there is no airflow at that location, and therefore no optimization or adjustment based on equipment operating information is necessary.

[0065] Specifically, the activity route map is generated based on activity path data, personnel video activity path information data, and their corresponding time information.

[0066] The activity route map reflects the activity trajectory of the corresponding personnel over time, and avoids monitoring blind spots by using two sets of information: activity path data and personnel video activity path information data.

[0067] Specifically, the judgment model extracts dangerous behavior segments from the judgment video data corresponding to positive patients using preset dangerous feature judgment criteria, retrieves the location information of positive patients in the activity route map corresponding to the dangerous behavior segments at the same time, and wind direction monitoring information data at the same time, and generates close contact judgment data.

[0068] The dangerous behavior segment includes information on the positive patient's facing direction, location, time of occurrence, and wind direction at that location. The model generates a real-time simulation model of the maximum coverage area of ​​droplet transmission (set according to the specific disease transmission route type), and identifies the personnel present in the area at that time.

[0069] Specifically, the identification model matches and filters close contact identification data with the activity routes of all individuals except positive patients in terms of time, space, and airflow direction to determine the identity information of close contacts and complete the identification of close contacts.

[0070] In practical applications, the criteria for determining risk characteristics need to be specifically designed according to the type of transmission of the specified infectious disease. The criteria for determining risk characteristics need to be adjusted according to different transmission routes and modes. For example, for diseases transmitted through the respiratory tract, the transmission route is droplets, and the criteria for determining risk characteristics are defined as sneezing, coughing, and other behaviors of positive patients.

[0071] The following are some common diseases:

[0072] Novel coronavirus:

[0073] Early symptoms: The main symptom is high fever, but other symptoms may include abdominal distension, diarrhea, general weakness, dry cough, and limb pain. Patients in better physical condition may experience milder clinical symptoms after infection with the novel coronavirus; for example, these patients may only have a mild cough and low-grade fever as their main clinical symptoms.

[0074] Transmission routes: The main transmission routes of the novel coronavirus are respiratory droplet transmission and contact transmission. Aerosol and fecal-oral transmission routes require further clarification. Epidemiological investigations show that most cases can be traced back to close contact with confirmed cases.

[0075] Direct transmission: refers to infection caused by direct inhalation of droplets from a patient's sneezing, coughing, or talking, or by exhaling air at close range;

[0076] Aerosol transmission: refers to the transmission of droplets that mix in the air to form aerosols, which can lead to infection upon inhalation;

[0077] Contact transmission refers to the transmission of droplets that settle on the surface of objects. After touching the contaminated hands, the person then touches the mucous membranes of the mouth, nose, or eyes, leading to infection.

[0078] Susceptible populations: People of all ages can be infected, but adults are the most susceptible, with the elderly and those with weakened immune systems appearing to be more vulnerable. Recent findings also indicate that animals can be infected.

[0079] Children and pregnant women are vulnerable to the novel coronavirus.

[0080] Definition of close contacts:

[0081] The first category is close contacts: those who have been in close contact with confirmed cases in a closed, poorly ventilated environment and are within one meter of them. The second category is close contacts: those who have lived together for a long period of time and have had contact with confirmed cases. The third category is close contacts: those who have traveled on the same closed means of transportation and are within one to two meters of each other.

[0082] Hand, foot and mouth disease:

[0083] Hand, foot, and mouth disease (HFMD) is an acute infectious disease caused by various enteroviruses. Children with HFMD are the main source of infection, which can be transmitted through respiratory droplets or general contact. Infants and young children with weakened immune systems are more susceptible to the disease, and infection is more likely to occur in group settings, making it relatively highly contagious. Most cases of HFMD are mild; after diagnosis, mild cases can be isolated at home, while severe cases require hospitalization and comprehensive treatment. Most patients recover within about a week, with treatment primarily focused on symptoms; there is no specific antiviral medication.

[0084] tuberculosis:

[0085] It is a relatively common chronic respiratory infectious disease in clinical practice.

[0086] Main symptoms: low-grade fever in the afternoon, fatigue, cough, hemoptysis, night sweats, and weight loss.

[0087] Source of infection: The main source of tuberculosis infection is pulmonary tuberculosis patients with positive sputum smears or cultures, especially those with smear-positive pulmonary tuberculosis, which are highly infectious.

[0088] Transmission routes: Tuberculosis bacteria are mainly transmitted through respiratory droplets. When patients with active pulmonary tuberculosis cough, sneeze, or speak loudly, droplet nuclei containing single tuberculosis bacteria are formed and suspended in the air, thus infecting new hosts. The infectivity of pulmonary tuberculosis is closely related to the amount of bacteria shed by the patient, the severity of coughing, and the degree of contact. Because tuberculosis bacteria die rapidly in dry, hot, and sunny conditions, the main route of transmission is indoor air pollution; outdoor transmission is generally not a cause of infection. In addition, tuberculosis bacteria expelled by a patient's cough can dry and adhere to dust, forming bacteria-laden dust that can also invade the human body and cause infection. Transmission through the digestive tract, urinary and reproductive systems, and skin is extremely rare.

[0089] Susceptible populations: People with diabetes, silicosis, tumors, organ transplants, or those who use immunosuppressive drugs or corticosteroids for a long time are more likely to develop tuberculosis. Poverty, poor living conditions, and malnutrition are the reasons for the high incidence of tuberculosis in economically underdeveloped societies.

[0090] like Figure 2 As shown, the method for identifying close contacts of infectious diseases based on the regional infectious disease close contact identification system includes the following steps:

[0091] S1. Collect and upload basic information data and judgment video data of all personnel in the area;

[0092] S2. Obtain and upload wind direction monitoring data within the area;

[0093] S3. Generate an activity route map for each person in the area based on the uploaded data and associate it with the corresponding judgment video data;

[0094] S4. Based on the confirmed positive patient information, generate close contact identification data, and determine the identity information of close contacts based on the identification data.

[0095] Specifically, in step S1, the determination data includes: personnel behavior information data and personnel video activity path information data.

[0096] Specifically, in step S2, the wind direction monitoring data is generated through the following steps:

[0097] S201. Monitor the working status of ventilation equipment and generate equipment working information data, including: start / stop information of ventilation equipment, ventilation mode information and ventilation direction information;

[0098] S202. Detect the actual wind direction in the area and generate air circulation data;

[0099] S203. Optimize and adjust the air circulation data based on the equipment working information data to generate wind direction monitoring data.

[0100] Specifically, in step S4, the identification of close contacts includes the following steps:

[0101] S401. Extract dangerous behavior segments from the judgment video data corresponding to positive patients using preset dangerous characteristic judgment criteria;

[0102] S402. Retrieve the location information of positive patients from the activity route map corresponding to the same time as the dangerous behavior segment, as well as the wind direction monitoring information data at the same time, and generate close contact determination data.

[0103] S403. By matching and screening the close contact identification data with the activity route maps of all personnel except the positive patient in terms of time, space and air flow direction, the identity information of close contacts is determined, and the identification information of close contacts is completed.

[0104] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0105] This application is described with reference to system block diagrams according to embodiments of this application. It should be understood that each block or combination of blocks in the block diagrams can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the block diagrams. Figure 1 A device that provides the functions specified in one or more boxes.

[0106] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in the block. Figure 1 The function specified in one or more boxes.

[0107] These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable apparatus for implementing the block. Figure 1 The steps of the function specified in one or more boxes.

[0108] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0109] Memory may include non-persistent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM. Memory is an example of computer-readable media.

[0110] Computer-readable media includes both permanent and non-permanent, removable and non-removable media that can store information using any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic magnetic disk storage or other magnetic storage devices, or any other non-transferable medium that can be used to store information accessible by a computing device. As defined herein, computer-readable media does not include transient computer-readable media, such as modulated data signals and carrier waves.

[0111] Example 2

[0112] Compared with Embodiment 1, the only difference is that the wearable information collection device is also used to collect the vertical and horizontal movement information of the user's head in the vertical direction, the left and right movement information in the left and right direction (achieved by a gyroscope), and at the same time, to collect the user's voice information (achieved by a microphone array, which can be achieved by four microphones in this embodiment).

[0113] The central server is also used to analyze the collected user sound information. If a cough or sneeze is heard, it determines whether there is vertical or horizontal movement of the user's head. If not, the user is marked as being close to the sound source. Then, based on the direction of the sound source and the left and right movement information, the angle between the user's head and the sound source is determined. If the sound source is behind and the left and right movement information is zero, the user is marked as having no impact from the sound source. If the sound source is in front, the user is marked as having an impact from the sound source.

[0114] If vertical and horizontal movement information exists, determine whether the interval between the numerical horizontal movement information and the cough or sneeze sound is less than the threshold. If it is less than the threshold, mark this user as the sound source user.

[0115] The determination model is also used to assign roles to users of the wearable information collection device based on the confirmed positive patient information. When assigning roles to users based on the wearable information collection device, the close contact determination rules are supplemented. If the positive patient information is a sound source user, then the user affected by the sound source is determined to be a close contact.

[0116] In this embodiment, some users may sneeze or cough in the scene. Existing systems struggle to accurately identify the impact range on people in the scene if the sneezer or cougher is a positive case. However, in this embodiment, by collecting the user's head movement direction and sound, a comprehensive judgment is made as to whether it is the sneezer or cougher or a nearby person. Furthermore, the behavior (head movement direction) of nearby people is collected and analyzed to determine whether they are affected by the sneezer or cougher. If the person is in front and their head is not moving left or right, it indicates that the droplets from the sneezer or cougher are unlikely to affect the user through respiration as they walk forward. This is because the direction of movement and head orientation make it difficult to inhale the droplets (the distance and direction are not well-matched). This avoids some users being misidentified, improving the system's accuracy.

[0117] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0118] The above are merely embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A system for identifying close contacts of infectious diseases in a region, characterized in that, include: The regional information collection terminal collects and uploads basic information data and judgment video data of all personnel within the region; A wind direction monitoring device, which is connected to intelligent ventilation equipment in the area, acquires wind direction monitoring information data and uploads it; The central server receives data uploaded by the regional information collection terminal and the wind direction monitoring device, generates an activity route map for each person in the region, and associates it with the corresponding judgment video data. The determination model generates close contact determination data based on the identified positive patient information, and determines the identity information of close contacts based on the determination data; The regional information collection terminal includes: A fixed monitoring device, at least one of the fixed monitoring devices monitors personnel within a designated area and acquires first video data; A wearable information collection device, which collects the wearer's identity information data and activity path data to generate basic information data of the wearer; monitors people near the wearer and obtains second video data; The first video data and the second video data are associated to form the determination video data; The determination data includes: personnel behavior information data and personnel video activity path information data; The wind direction monitoring device includes: The equipment operation monitoring module monitors the working status of the ventilation equipment connected to it and generates equipment operation information data, which includes: ventilation equipment start / stop information, ventilation mode information and ventilation direction information; The wind direction detection module detects the actual wind direction in the area and generates air circulation data. Specifically, air circulation data is optimized and adjusted based on the equipment's operating information data to generate wind direction monitoring data; The activity route map is generated based on activity path data, personnel video activity path information data, and their corresponding time information; The judgment model extracts dangerous behavior segments from the judgment video data corresponding to positive patients using preset dangerous feature judgment criteria, retrieves the location information of positive patients in the activity route map corresponding to the dangerous behavior segments at the same time, and wind direction monitoring information data at the same time, and generates close contact judgment data. The determination model matches and filters the close contact determination data with the activity route map of all people except the positive patient in terms of time, space and air flow direction to determine the identity information of close contacts and complete the determination of the identity information of close contacts. Wearable information collection devices are also used to collect vertical and horizontal movement information of the user's head in the vertical direction, left and right movement information in the left and right direction, and at the same time, collect the user's voice information. The central server is also used to analyze the collected user sound information. If a cough or sneeze is heard, it determines whether there is vertical or horizontal movement of the user's head. If not, the user is marked as being close to the sound source. Then, based on the direction of the sound source and the left and right movement information, the angle between the user's head and the sound source is determined. If the sound source is behind and the left and right movement information is zero, the user is marked as having no impact from the sound source. If the sound source is in front, the user is marked as having an impact from the sound source. If vertical and horizontal movement information exists, determine whether the interval between the numerical horizontal movement information and the cough or sneeze sound is less than the threshold. If it is less than the threshold, mark this user as the sound source user. The determination model is also used to assign roles to users of the wearable information collection device based on the confirmed positive patient information. When assigning roles to users based on the wearable information collection device, the close contact determination rules are supplemented. If the positive patient information is a sound source user, then the user affected by the sound source is determined to be a close contact.

2. The determination method based on the regional infectious disease close contact determination system according to claim 1, characterized in that, Includes the following steps: S1. Collect and upload basic information data and judgment video data of all personnel in the area; S2. Obtain and upload wind direction monitoring data within the area; S3. Generate an activity route map for each person in the area based on the uploaded data and associate it with the corresponding judgment video data; S4. Based on the confirmed positive patient information, generate close contact identification data, and determine the identity information of close contacts based on the identification data.

3. The method for determining close contacts of regional infectious diseases according to claim 2, characterized in that, In step S1, the determination data includes: personnel behavior information data and personnel video activity path information data.

4. The method for determining close contacts of regional infectious diseases according to claim 3, characterized in that, In step S2, the wind direction monitoring data is generated through the following steps: S201. Monitor the working status of ventilation equipment and generate equipment working information data, including: start / stop information of ventilation equipment, ventilation mode information and ventilation direction information; S202. Detect the actual wind direction in the area and generate air circulation data; S203. Based on the equipment's operating information data, optimize and adjust the air circulation data to generate wind direction monitoring data.

5. The method for determining close contacts of regional infectious diseases according to claim 4, characterized in that, In step S4, the determination of the identity information of the close contact includes the following steps: S401. Extract dangerous behavior segments from the judgment video data corresponding to positive patients using preset dangerous characteristic judgment criteria; S402. Retrieve the location information of positive patients from the activity route map corresponding to the same time as the dangerous behavior segment, as well as the wind direction monitoring information data at the same time, and generate close contact determination data. S403. By matching and screening the close contact identification data with the activity route map of all persons except the positive patient in terms of time, space and air flow direction, the identity information of close contacts is determined, and the identification information of close contacts is completed.

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