CN111885502B - Epidemic situation prevention and control early warning and tracing system and method for protecting privacy - Google Patents
Epidemic situation prevention and control early warning and tracing system and method for protecting privacy Download PDFInfo
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Abstract
The invention discloses an epidemic situation prevention, control, early warning and tracing system for protecting privacy, which comprises a data acquisition and storage module, an information integration module, an anonymous information announcement module and a risk discrimination and processing module. The method and the device use the WIFI Probe technology to record the equipment MAC address information of surrounding personnel to judge whether contact is generated between two users, judge the distance information of the generated contact according to the strength of a WIFI signal, and judge the contact duration according to the recorded timestamp difference. In addition, the electronic payment interface, the riding information interface, the positioning information and other multi-source data are used for assisting risk judgment, and the reliability of data is improved. The invention anonymously pushes the data of the patient to the equipment of other users, and respectively compares the data of the equipment of other users with the data of the patient to judge whether the patient is in close contact with the patient. And when the risk of infection exists, the alarm is given to the user, and when the risk is higher, the alarm is reported to the epidemic situation prevention and control server so as to be further processed by the disease control center.
Description
Technical Field
The invention relates to the tracing problem of closely contacted people of patients in the field of virus prevention and control, analyzes the possible spread range of epidemic situations by using relevant information of the patients, carries out early warning notification and information report on the closely contacted people, and realizes the aim of minimizing and zero infection.
Background
The method is an effective prevention and control mode for cutting off the infection chain of the virus with strong transmission capability, high latency and great transmission hazard. However, because of the long latency and the ability to transmit during the latency period, patients are usually isolated after the onset of disease. The traceability of contacts from the time of infection with the virus to the time of manifestation of symptoms usually relies on the patient's oral information, where there are many memory incompleteness, missing description problems, leading to difficult findings for close contacts. Close contacts are often unknowingly infected and may infect more people without doing isolation work before they show symptoms. Under the condition, the epidemic situation early warning and tracing system can give an early warning to related close contact personnel after the patient shows symptoms and is received and treated, and directly reports the basic information of the personnel with higher risk for further processing by a disease control department. The possible transmission chain of the virus can be found out by utilizing the processing mode, the possible transmission chain can be controlled in time, and further loss is reduced.
At present, a positioning system of portable WIFI equipment such as a mobile phone mainly depends on three modes: firstly, satellite positioning antennas in portable WIFI equipment such as a mobile phone receive signals of positioning systems such as a GPS (global positioning system) positioning system and a Beidou positioning system for positioning; secondly, the position information of the base station is inquired by using base station signals received by portable WIFI equipment such as a mobile phone and the like to realize positioning; and thirdly, using the known position information of the WIFI signal to realize WIFI auxiliary positioning (the principle of the WIFI auxiliary positioning is similar to that of base station positioning), wherein the WIFI auxiliary positioning is carried out under the condition that the position of the WIFI signal is shared. The positioning accuracy of these three positioning methods: satellite positioning precision > base station positioning precision > WIFI assistance-localization real-time precision. Meanwhile, the positioning usually has a positioning error of 10-20 meters, and the satellite positioning mode cannot perform positioning in underground facilities such as subways and the like, so that the positioning error of equipment is possibly further increased, whether close contact exists or not cannot be judged, and more accurate statistical data are difficult to obtain when the satellite positioning mode is used for epidemic situation prevention and control and tracing.
The IEEE802.11 protocol set of WIFI comprises a ProbeRequest frame, WIFI equipment using the protocol can actively send the ProbeRequest frame, and the ProbeRequest frame carries information such as the MAC address of the equipment and the WIFI signal intensity. After the WIFI network card starts the monitor mode, the signals can be monitored to detect the MAC addresses, the WIFI signal intensity and other information of all WIFI devices in the range. After a WIFI chip in portable WIFI equipment such as a mobile phone and the like is started in a monitor mode, MAC address information of all surrounding WIFI equipment can be recorded, and one piece of equipment can be uniquely determined by the address information. In addition, the signal intensity from the WIFI equipment to the local can be recorded, more accurate relative distance information can be acquired through the parameter, whether close contact exists or not is judged, and the contact time can be calculated through the timestamp difference value of the information recording.
The health code technology classifies virus-carried risk levels of users on the basis of big data, but the technology does not realize the tracing function of epidemic situations and also depends on active information report of the users, so that certain defects exist.
Disclosure of Invention
The invention designs a tracing and early warning system in epidemic situation prevention and control by utilizing portable intelligent WIFI networking equipment such as a mobile phone. As shown in the timing chart of fig. 2, the system collects information of the electronic payment location interface and the bus information interface by using the portable intelligent WIFI networking equipment such as a mobile phone, and records the MAC address and the signal strength of the portable intelligent WIFI networking equipment such as the mobile phone of a nearby person through the WIFIProbe technology, and calculates the relative distance information with the nearby person. The positioning function of the portable intelligent WIFI networking equipment such as a mobile phone comprises but is not limited to absolute position information of functional positioning equipment such as satellite positioning, base station positioning and WIFI auxiliary positioning. If the difference between the data collection time and the current time exceeds the viral latency and the device owner does not have symptoms of illness, the expired data is deleted and new data collection continues. And if the disease symptoms appear, uploading the activity track information stored in the equipment to an epidemic situation prevention and control server in an anonymous mode, and integrating the activity track information with oral information actively reported by the patient. The epidemic situation prevention and control server pushes the information to other users, all the devices receiving the information compare the data of the devices, and judge whether the absolute position of the data of the devices and the absolute position of the data of the patients are overlapped and the relative positions of the devices are very close to each other. When this occurs, it is determined that the current device owner is a close contact person, and an alarm notification is given thereto. The equipment grades the infection possibility of the equipment owner according to the information of the contact closeness (distance and time) of the equipment and the patient, if the infection risk is high, basic information is automatically reported to a disease control department, and the disease control department can further diagnose and evaluate and trace all high-risk people.
The invention provides an epidemic prevention and control early warning and tracing system, which comprises: the system comprises a data acquisition and storage module, an information integration module, an anonymous information bulletin module and a risk discrimination and processing module;
the data acquisition and storage module is responsible for collecting and storing the position information and comprises four functional modules, namely an electronic payment information acquisition and storage module, a riding information acquisition and storage module, a signal strength information acquisition and storage module and a positioning information acquisition and storage module;
the information integration module is used for integrating the data of the data acquisition and storage module and the oral information of the patient after the user is infected by the confirmed virus, and deleting redundant information;
the anonymous information announcement module is responsible for cleaning and visually displaying the data of the patient, and then pushing anonymous information of the current patient, including activity track information of the patient and MAC address information of the equipment, to users of all systems;
the risk judging and processing module is responsible for receiving the pushing of the patient information, comparing the equipment MAC address and track information of the patient with the equipment MAC address and track information of the contacter stored by the risk judging and processing module, judging the infection risk level of the current equipment owner according to the existence, the contact distance and the contact duration information, and sending alarm information to the equipment owner if the possibility of infection exists; if the equipment is judged to be closely contacted with personnel and the infection risk is extremely high, the equipment automatically sends the basic information of the equipment owner to the epidemic situation prevention and control server.
The information integration module inputs the memory information of the dictation of the patient into a database and converts the memory information into longitude and latitude information through an interface; and integrating the longitude, latitude and time columns of the payment position information table, the positioning information table and the converted dictation information table to generate an information integration table.
The information integration module provided by the invention has the function of running in the epidemic situation prevention and control server except uploading the information of the data acquisition and storage module.
In the invention, all data recorded by the uninfected user are encrypted and stored locally, and the data with the storage time exceeding the virus latency period is deleted.
Based on the system, the invention also provides an epidemic situation prevention and control early warning and tracing method, which comprises the following steps:
s1, collecting data and generating a payment position information table, a vehicle taking information table, a WIFIProbe detection information table and a positioning information table; periodically checking the data of each information table, and deleting related data entries if the data storage duration exceeds the latency duration of the virus;
s2, extracting key information from the activity track information input by the patient to generate a memory dictation information table, uploading the information, a payment position information table, a vehicle taking information table, MAC address information and a positioning information table to an epidemic situation prevention and control server together, and integrating to generate an information integration table;
s3, data in the information integration table are cleaned, longitude and latitude and timestamp information of the information integration table of the patient are marked on a map for visual display, and then the activity track of the memory dictation information table is displayed on a bulletin board; pushing the information integration table, the vehicle taking information table and the MAC address information table of the patient to users except the patient;
s4, if the user has the risk of infection, the risk warning module automatically sends an infected risk warning to the user; if the user is a close contact person and the infected risk is high risk, the risk reporting module automatically sends the basic information of the user to the epidemic situation prevention and control server.
In the present invention, the step S1 includes:
s101, every fixed time, an electronic payment information acquisition and storage module acquires electronic payment information by using an interface of a third-party payment platform and stores longitude coordinates and latitude coordinates of a shop where an electronic order is located and payment time to a payment position information table;
s102, inquiring and acquiring information of a vehicle, a train number and a seat number taken by a user by using a riding information acquisition and storage module at fixed time intervals, and storing the information into a vehicle taking information table;
s103, recording the MAC address, the signal intensity information and the timestamp information of the surrounding equipment in real time by using the WIFIProbe, and storing the information into a WIFIProbe detection information table;
s104, acquiring longitude and latitude information and timestamp information of the equipment by using satellite positioning, base station positioning and WIFI auxiliary positioning modes, and storing the longitude and latitude information and the timestamp information into a positioning information table;
and S105, regularly checking each table of the database, obtaining the data storage duration by subtracting the data storage time from the current time, and deleting the related data entries in the database if the data storage duration exceeds the virus latency duration.
In the present invention, the step S2 includes:
s201, respectively uploading information of the data acquisition and storage module, including information of a payment position information table, an information table of a vehicle, MAC address information and a positioning information table, to an epidemic situation prevention and control server;
s202, supervising and urging a patient to manually input activity track information by a disease control center, extracting key information such as activity time, activity places and close contact persons in oral information to obtain a memory oral information table, and uploading the memory oral information table to an epidemic situation prevention and control server; the server converts the activity place information into longitude and latitude coordinates by using a map interface;
s203, integrating the longitude, latitude and time columns of the payment position information table, the positioning information table and the converted dictation information table to generate an information integration table, and deleting part of redundant information.
In the present invention, the step S3 includes:
s301, arranging all information in an ascending order of time by taking the timestamp information in the information integration table as a sequencing basis, and deleting the longitude and latitude coordinates with larger outliers in the sequence; then clustering data in the information integration table by using a Kmeans algorithm, setting a K value as the number/n of data items of the information integration table, wherein the n value is a multiple of the data number to be scaled, and the larger the n value is, the smaller the number of data points after clustering is; then marking the longitude and latitude and the timestamp information of the information integration table of the clustered patients on a map for visual display, and then displaying the activity track of the memory dictation information table on a bulletin board;
s302, pushing an unclustered information integration table, a vehicle taking information table and an MAC address information table of the patient to all users except the patient using the system.
In the present invention, the step S4 includes:
s401, receiving an information integration table of a patient, an information table for taking a vehicle and MAC address information pushed by an information pushing module, and sequencing each information table in an ascending order according to timestamps;
s402, grouping the information items in the same time range of the information integration table of the patient and the information integration table of the current user, and calculating the spherical distance between the two users by using a Haversine formula in each group:
wherein,
and
is the latitude value, λ, of two points1And λ2Is the longitude value of two points, r is the radius of the earth; if the distance between the patient and the current user in a plurality of time groups is smaller than a certain threshold value, the infection risk level of the user is improved;
s403, comparing the vehicle taking information table of the patient with the vehicle taking information table of the current user, searching whether the condition that the patient takes the vehicles of one shift is present, and if the condition is present and the seat number distance is far, setting the condition as low risk; setting as high risk if the seat number appears and the distance between the seat numbers is short;
s404, inquiring whether the MAC address of the patient exists in the MAC addresses stored in the equipment, and if so, dividing the risk into three levels by using the signal intensity; judging the condition of close contact according to the difference information of the time stamps, wherein the larger the difference of the time stamps is, the longer the contact time is, and if the condition of close contact exists, the infection risk grade is set as high risk;
s405, if the equipment owner has the risk of infection, the risk warning module automatically sends an infected risk warning to the owner;
s406, if the equipment owner is a close contact person and the infected risk is high risk, the risk reporting module automatically sends the basic information of the equipment owner to the epidemic situation prevention and control server.
The invention uses multi-source data as risk evaluation factors, accesses the riding information and the electronic payment information, converts the riding information and the electronic payment information into track information by using address information of a third-party platform, and further assists track judgment. Besides the traditional positioning modes such as satellite positioning, base station positioning and WIFI auxiliary positioning are utilized to determine the absolute position and realize the track ratio, the invention also uses the WIFIProbe technology to record the equipment MAC address and the WIFI signal intensity information of surrounding personnel. According to the technology, only the WIFI of the equipment needs to be kept in an open state, the MAC addresses and the signal strength of other equipment can be recorded without connection, whether two people holding the equipment contact closely or not can be determined in a small range, and therefore accurate close contact statistics is achieved.
Compared with the existing epidemic situation auxiliary prevention and control mode using big data, such as health code and the like, the invention has the following innovations:
the invention uses multi-source data to carry out risk assessment, risk alarm and risk report, and has higher reliability and accuracy.
The method uses the WIFIProbe technology to record the equipment MAC address information of surrounding personnel to judge whether the two users are in contact or not, and judges the distance information of the contact through the strength of the WIFI signal. Only collecting the device MAC address information and the WIFI signal strength of the surrounding users does not reveal the information of the surrounding users, and the information is only stored in the local users and is stored for a period of time (virus latency), so that large-scale leakage of data information cannot be caused even if the device is hacked. In addition, multi-source data are utilized, and the reliability and accuracy of the system are enhanced.
Drawings
Fig. 1 is a block diagram of an epidemic situation prevention and control and traceability system for protecting privacy.
Fig. 2 is a sequence diagram of an epidemic situation prevention control and tracing system for protecting privacy.
Fig. 3 is an activity diagram of an epidemic prevention control and tracing system for protecting privacy.
Fig. 4 payment location information table.
Fig. 5 is a vehicle information table.
FIG. 6WIFIProbe Probe info Table.
Fig. 7 a table of positioning information.
FIG. 8 is a table of oral information.
Fig. 9 a signal strength to risk level conversion table.
Detailed Description
The invention is further described in detail with reference to the following specific examples and the accompanying drawings. The procedures, conditions, experimental methods and the like for carrying out the present invention are general knowledge and common general knowledge in the art except for the contents specifically mentioned below, and the present invention is not particularly limited.
The invention relates to an epidemic situation prevention and control tracing system which is divided into four modules, as shown in figure 1, and comprises the following components:
s1, a data acquisition and storage module. The data acquisition and storage module is mainly responsible for collecting and storing position information, comprises four functional modules, and is respectively an electronic payment information acquisition and storage module, a riding information acquisition and storage module, a WIFIProbe information acquisition and storage module, and a satellite positioning, base station positioning and WIFI auxiliary positioning information acquisition and storage module.
The method comprises the following steps:
s101, at fixed time intervals, the electronic payment information acquisition and storage module acquires the electronic payment place information by using an interface of a third-party payment platform and stores the electronic payment place information in a local database.
And S102, at fixed time intervals, the riding information acquisition and storage module acquires the riding vehicles, the number of the riding vehicles and riding time information by utilizing interface inquiry and stores the riding time information into a local database.
And S103, recording the MAC address, the signal intensity information and the timestamp information of the surrounding equipment in real time by using the WIFIProbe, and storing the MAC address, the signal intensity information and the timestamp information into a local database.
And S104, acquiring the position information and the timestamp information of the equipment by using positioning modes such as satellite positioning, base station positioning, WIFI auxiliary positioning and the like, and storing the position information and the timestamp information into a local database.
And S105, regularly checking each table of the database, obtaining the data storage duration by subtracting the data storage time from the current time, and deleting the related data entries in the database if the data storage duration exceeds the virus latency duration.
And S2, an information integration module. The information integration module is used for integrating the data acquisition and storage module and the oral information of the patient after the user is infected by confirmed viruses and deleting redundant information. Firstly, the memory information dictated by the patient is input into a database and then converted into longitude and latitude information through an interface. And then integrating the longitude, latitude and time columns of the payment position information table, the positioning information table and the converted dictation information table to generate an information integration table.
The method comprises the following steps:
s201, information of the data acquisition and storage module is uploaded to an epidemic situation prevention and control server.
S202, the disease control center supervises and urges the patient to manually input the activity track information, extracts key information in the oral information, such as activity time, activity place and close contact person, obtains a memory oral information table shown in figure 8, and uploads the memory oral information table to the epidemic situation prevention and control server. The server converts the activity location information into latitude and longitude coordinates using a map interface.
And S203, integrating the dictation extraction information with the information of the data acquisition module, deleting part of redundant information, and transmitting the redundant information to an anonymous information bulletin module.
And S3, an anonymous information bulletin module. The anonymous information announcement module is responsible for processing information of the information integration module, cleaning and visually displaying data, and pushing anonymous information of a current patient, including position information, MAC address information of equipment and the like, to users of all systems.
The method comprises the following steps:
and S301, receiving the information of the information integration module, cleaning and processing data, marking the activity track of the patient on a map, and performing visual display.
S302, pushing the MAC address information and the activity track information of the equipment of the patient to users of all systems.
And S4, a risk judging and processing module. The module is responsible for receiving the pushing of patient information, comparing the equipment MAC address and track information of a patient with the equipment MAC address and track information of a contacter stored by the module, judging the infection risk level of the current equipment owner according to the information of contact, contact distance, contact duration and the like, and sending alarm information to the equipment owner if the possibility of infection exists, so that the equipment owner can be isolated as soon as possible, and possible propagation risk is reduced. If the equipment is judged to be closely contacted with personnel and the infected risk is extremely high, the automatic epidemic situation prevention and control server of the equipment sends basic information of the equipment owner, so that the disease control center can detect and diagnose the equipment as soon as possible and cut off virus propagation.
The method comprises the following steps:
s401, receiving the MAC address information and the activity track information of the patient, which are pushed by the information pushing module, clustering the track information of the equipment and the track information of the patient, and reducing the calculation complexity.
S402, inquiring whether the MAC address of the patient exists in the MAC addresses stored in the equipment, and if so, increasing the infection risk level of the owner of the equipment. And judging the condition of close contact by utilizing difference information of the distance and the time stamp recorded according to the signal strength, and if the condition of close contact exists, setting the infection risk level to be not highest.
And S403, calculating track clustering of the patient and the equipment owner, and calculating track distance and similarity after clustering. And if the same time is close or the track similarity is high, the infection risk level of the equipment owner is improved.
S404, if the equipment owner has the risk of being infected, the risk warning module automatically sends out a risk warning of being infected to the owner.
S405, if the equipment owner is a close contact person and the infected risk level is high, the risk reporting module sends basic information of the equipment owner to a disease control department to quickly control the information of the close contact person.
The invention designs a system for realizing close contact personnel tracing and alarming of infected persons after epidemic situations occur by using mobile phones and other portable devices supporting WIFI to record information, which has the following characteristics:
the information utilized by the method, including track information, riding information, electronic payment information, MAC (media access control) address and signal strength of WIFI (wireless fidelity) equipment and other information, is usually only retained in the equipment of the WIFI equipment, and only after virus infection is diagnosed, the information is shared anonymously to help to search for close contacts, so that the privacy and safety of users can be ensured.
Examples
The invention discloses an epidemic situation early warning and tracing system, which utilizes portable WIFI equipment to collect information related to an individual activity track, and after a user confirms virus infection, the information such as the individual activity track, a unique identifier and the like is shared, so that the equipment of all users can automatically judge whether the equipment is in close contact with a patient, and if the risk of infection is high, the equipment can automatically report information to a disease control department, and the tracing of close contacts in epidemic situation prevention and control is realized.
For clearly describing the epidemic situation early warning tracing system, the invention provides a module diagram of the system as shown in fig. 1, a timing diagram as shown in fig. 2 and an activity diagram as shown in fig. 3. The block diagram describes the functional block division of the system, and the timing chart describes the sequence information of the execution process of the system. In the activity diagram, the invention divides the system objects into four types, namely virus infection users, common users, medical institutions and epidemic situation prevention and control servers. The main activity of virus infected users and common users is information collection and storage. After the virus infected user is diagnosed and infected, integrating the dictation information, the track and the equipment MAC address information and uploading the information to an epidemic situation prevention and control server. And the epidemic situation prevention and control server pushes the track and MAC address information of the patient to other common users after the patient information announcement and the visual display. The common user equipment compares the patient information with the equipment storage information of the common user equipment, carries out risk judgment, carries out risk alarm when the risk exists, reports the risk to the epidemic situation prevention and control server if the risk is higher, and the epidemic situation prevention and control server informs the epidemic situation prevention and control personnel to further process the epidemic situation prevention and control personnel, such as detection or medical diagnosis.
The specific implementation of the system is as follows:
s1, the data acquisition and storage module is a user equipment end module, the module respectively utilizes an electronic payment information acquisition and storage module, a riding information acquisition and storage module and a WIFIProbe information (including MAC (media access control) address and signal strength information of the equipment) acquisition and storage module, and the satellite positioning, base station positioning and WIFI auxiliary positioning information acquisition and storage module records the movement track information of a user.
The method comprises the following steps:
step S101, every fixed time, the electronic payment information acquisition and storage module acquires electronic payment information by using an interface of a third party payment platform, and stores longitude coordinates and latitude coordinates of a shop where an electronic order is located and payment time to a payment position information table of a local database as shown in fig. 4.
And S102, at regular intervals, inquiring and acquiring the information of the vehicle, the train number and the seat number taken by the user by using the riding information acquisition and storage module through an interface, and storing the information into a riding vehicle information table of a local database shown in figure 5.
Step s103, recording the MAC address, the signal strength information, and the timestamp information of the peripheral device in real time by using the WIFIProbe, and storing the recorded information in the local database WIFIProbe detection information table shown in fig. 6.
And S104, acquiring longitude and latitude information and timestamp information of the equipment by using positioning modes such as satellite positioning, base station positioning, WIFI auxiliary positioning and the like, and storing the longitude and latitude information and the timestamp information into a local database positioning information table shown in fig. 7.
And S105, regularly checking each table of the local database, obtaining the data storage duration by subtracting the data storage time from the current time, and deleting the related data entries in the database if the data storage duration exceeds the virus latency duration.
And S2, the information integration module is used for integrating the data of the data acquisition and storage module and the oral information of the patient after the user is infected by the confirmed virus, and deleting redundant information. Firstly, the memory information dictated by the patient is input into a database and then converted into longitude and latitude information through an interface. And then integrating the longitude, latitude and time columns of the payment position information table, the positioning information table and the converted dictation information table to generate an information integration table. The function of the module is to upload the information of the data acquisition and storage module and run in the epidemic situation prevention and control server.
The method comprises the following steps:
s201, information of the data acquisition and storage module, including information of a payment position information table, an information table of a vehicle, MAC address information and a positioning information table, is uploaded to an epidemic situation prevention and control server respectively.
S202, the disease control center supervises and urges the patient to manually input the activity track information, extracts key information in the oral information, such as activity time, activity place and close contact person, obtains a memory oral information table shown in figure 8, and uploads the memory oral information table to the epidemic situation prevention and control server. The server converts the activity location information into latitude and longitude coordinates using a map interface.
And S203, integrating the longitude, latitude and time columns of the payment position information table, the positioning information table and the converted dictation information table to generate an information integration table (the table has the same format as the positioning information table and comprises the longitude column, the latitude column and the time stamp column), and deleting part of redundant information.
And S3, the anonymous information bulletin module is a functional module of the epidemic situation prevention and control server and is responsible for cleaning and visually displaying the data of the patient, and then pushing anonymous information of the current patient, including activity track information of the patient, MAC address information of equipment and the like, to users of all systems.
The method comprises the following steps:
and S301, receiving the processed information (including an information integration table, a vehicle taking information table and a WIFIProbe detection information table) of the information integration module, and performing data cleaning on the data in the information integration table. And (4) taking the timestamp information in the information integration table as a sequencing basis, sequencing all the information according to the ascending order of time, and deleting the longitude and latitude coordinates with larger outliers in the sequence. And then clustering the data in the information integration table by using a Kmeans algorithm, wherein the K value is set as the number/n of data items of the information integration table, the n value is a multiple of the data number to be scaled, and the larger the n value is, the smaller the number of the clustered data points is. And then, marking the longitude and latitude and timestamp information of the clustered information integration table of the patient on a map application for visual display, and then displaying the activity track text information of the memory dictation information table on a platform bulletin board.
S302, pushing an information integration table (not clustered), a vehicle taking information table and an MAC address information table of the patient to all users except the patient using the system.
And S4, the risk judging and processing module is a module of the user equipment. The module is responsible for receiving the pushing of patient information, comparing the equipment MAC address and track information of a patient with the equipment MAC address and track information of a contacter stored by the module, judging the infection risk level of the current equipment owner according to the information such as the contact, the distance and the contact time length when the contact exists or not, and the like, and if the possibility of infection exists, sending alarm information to the equipment owner, so that the equipment owner can be isolated as soon as possible, and the possible propagation risk can be reduced. If the equipment is judged to be closely contacted with personnel and the infected risk is extremely high, the equipment automatically sends basic information of the equipment owner to the epidemic situation prevention and control server, so that the disease control center can detect and diagnose the equipment as soon as possible and cut off virus propagation.
The method comprises the following steps:
s401, receiving the information integration table of the patient, the information table of the vehicle and the MAC address information pushed by the information pushing module, and sequencing each information table according to the ascending order of the time stamps.
S402, grouping the information items in the same time range of the information integration table of the patient and the information integration table of the current user, and calculating the positioning spherical distance between the two users by using a Haversine formula in each group.
Wherein
And
is the latitude value, λ, of two points1And λ2Is the longitude value of two points and r is the radius of the earth. If the distance between the patient and the current user in a plurality of time groups is less than a certain threshold (such as 10 meters), the infection risk level of the user is improved.
S403, comparing the vehicle taking information table of the patient with the vehicle taking information table of the current user, searching whether the condition that the patient takes the vehicles of one shift is present, and if the condition is present and the seat number distance is far, setting the condition as low risk; and setting as high risk if the seat number appears and is closer to the seat number.
S404, inquiring whether the MAC address of the equipment of the patient exists in the MAC addresses stored by the equipment, and if so, dividing the risk into three levels as shown in a signal strength and risk level conversion table of FIG. 9 by using the signal strength. And judging the condition of close contact according to the difference information of the time stamps, wherein the contact time is longer when the difference of the time stamps is larger, and the infection risk grade is set to be high risk if the condition of close contact exists.
S405, if the equipment owner has the risk of infection, the risk warning module automatically sends an infection risk warning to the owner.
S406, if the equipment owner is a close contact person and the infected risk is high risk, the risk reporting module automatically sends the basic information of the equipment owner to the epidemic prevention and control server so that a disease control department can rapidly control the information of the close contact person.
The invention discloses an epidemic situation prevention, control, early warning and tracing system for protecting privacy, which comprises a data acquisition and storage module, an information integration module, an anonymous information announcement module and a risk discrimination and processing module. The method and the device record the MAC address information of surrounding personnel by using the WIFIProbe technology to judge whether contact is generated between two users, judge the distance information of the generated contact according to the strength of a WIFI signal, and judge the contact duration according to the recorded timestamp difference. In addition, the electronic payment interface, the riding information interface, the positioning information and other multi-source data are used for assisting risk judgment, and the reliability of data is improved. The invention anonymously pushes the data of the patient to the equipment of other users, and respectively compares the data of the equipment of other users with the data of the patient to judge whether the patient is in close contact with the patient. And when the risk of infection exists, the alarm is given to the user, and when the risk is higher, the alarm is reported to the epidemic situation prevention and control server so as to be further processed by the disease control center.
The protection of the present invention is not limited to the above embodiments. Variations and advantages that may occur to those skilled in the art may be incorporated into the invention without departing from the spirit and scope of the inventive concept, and the scope of the appended claims is intended to be protected.
Claims (8)
1. An epidemic prevention and control early warning and tracing method is characterized in that an epidemic prevention and control early warning and tracing system is adopted, and the system comprises: the system comprises a data acquisition and storage module, an information integration module, an anonymous information bulletin module and a risk discrimination and processing module; wherein,
the data acquisition and storage module is responsible for collecting and storing the position information and comprises four functional modules, namely an electronic payment information acquisition and storage module, a riding information acquisition and storage module, a signal strength information acquisition and storage module and a positioning information acquisition and storage module;
the information integration module is used for integrating the data of the data acquisition and storage module and the oral information of the patient after the user is infected by the confirmed virus, and deleting redundant information;
the anonymous information announcement module is responsible for cleaning and visually displaying the data of the patient and then pushing anonymous information of the current patient to users of all systems, wherein the anonymous information comprises the activity track information of the patient;
the risk judging and processing module is responsible for receiving the pushing of the patient information, comparing the equipment MAC address and track information of the patient with the equipment MAC address and track information of the contacter stored by the risk judging and processing module, judging the infection risk level of the current equipment owner according to the existence, the contact distance and the contact duration information, and sending alarm information to the equipment owner if the possibility of infection exists; if the equipment is judged to be closely contacted with the personnel and the infection risk is extremely high, the equipment automatically sends basic information of the equipment owner to the epidemic situation prevention and control server;
the method comprises the following steps:
s1, collecting data and generating a payment position information table, a vehicle taking information table, a WIFI Probe detection information table and a positioning information table; periodically checking the data of each information table, and deleting related data entries if the data storage duration exceeds the latency duration of the virus;
s2, extracting key information from the activity track information input by the patient to generate a memory dictation information table, uploading the information, a payment position information table, a vehicle taking information table, MAC address information and a positioning information table to an epidemic situation prevention and control server together, and integrating to generate an information integration table;
s3, data in the information integration table are cleaned, longitude and latitude and timestamp information of the information integration table of the patient are marked on a map for visual display, and then the activity track of the memory dictation information table is displayed on a bulletin board; pushing the information integration table of the patient and the information table of the riding vehicle to users except the patient;
s4, if the user has the risk of infection, the risk warning module automatically sends an infected risk warning to the user; if the user is a close contact person and the infected risk is high risk, the risk reporting module automatically sends the basic information of the user to the epidemic situation prevention and control server.
2. The epidemic prevention and control early warning and tracing method according to claim 1, wherein the step S1 comprises:
s101, every fixed time, an electronic payment information acquisition and storage module acquires electronic payment information by using an interface of a third-party payment platform and stores longitude coordinates and latitude coordinates of a shop where an electronic order is located and payment time to a payment position information table;
s102, inquiring and acquiring information of a vehicle, a train number and a seat number taken by a user by using a riding information acquisition and storage module at fixed time intervals, and storing the information into a vehicle taking information table;
s103, recording MAC addresses, signal intensity information and timestamp information of surrounding equipment in real time by using WIFI probes, and storing the MAC addresses, the signal intensity information and the timestamp information into a WIFI Probe detection information table;
s104, acquiring longitude and latitude information and timestamp information of the equipment by using satellite positioning, base station positioning and WIFI auxiliary positioning modes, and storing the longitude and latitude information and the timestamp information into a positioning information table;
and S105, regularly checking each table of the database, obtaining the data storage duration by subtracting the data storage time from the current time, and deleting the related data entries in the database if the data storage duration exceeds the virus latency duration.
3. The epidemic prevention and control early warning and tracing method according to claim 1, wherein the step S2 comprises:
s201, respectively uploading information of the data acquisition and storage module, including information of a payment position information table, an information table of a vehicle, MAC address information and a positioning information table, to an epidemic situation prevention and control server;
s202, supervising and urging a patient to manually input activity track information by a disease control center, extracting key information such as activity time, activity places and close contact persons in oral information to obtain a memory oral information table, and uploading the memory oral information table to an epidemic situation prevention and control server; the server converts the activity place information into longitude and latitude coordinates by using a map interface;
s203, integrating the longitude, latitude and time columns of the payment position information table, the positioning information table and the converted memory dictation information table to generate an information integration table, and deleting part of redundant information.
4. The epidemic prevention and control early warning and tracing method according to claim 1, wherein the step S3 comprises:
s301, arranging all information in an ascending order of time by taking the timestamp information in the information integration table as a sequencing basis, and deleting the longitude and latitude coordinates with larger outliers in the sequence; then clustering data in the information integration table by using a Kmeans algorithm, setting a K value as the number n of data items of the information integration table, wherein the n value is a multiple of the data number to be scaled, and the larger the n value is, the smaller the number of data points after clustering is; then marking the longitude and latitude and the timestamp information of the information integration table of the clustered patients on a map for visual display, and then displaying the activity track of the memory dictation information table on a bulletin board;
s302, pushing an unclustered information integration table and a vehicle taking information table of the patient to all users except the patient using the system.
5. The epidemic prevention and control early warning and tracing method according to claim 1, wherein the step S4 comprises:
s401, receiving an information integration table of a patient, an information table for taking a vehicle and MAC address information pushed by an information pushing module, and sequencing each information table in an ascending order according to timestamps;
s402, grouping the information items in the same time range of the information integration table of the patient and the information integration table of the current user, and calculating the spherical distance between the two users by using a Haversine formula in each group:
wherein,
and
is the latitude value, λ, of two points1And λ2Is the longitude value of two points, r is the radius of the earth; if the distance between the patient and the current user in a plurality of time groups is smaller than a certain threshold value, the infection risk level of the user is improved;
s403, comparing the vehicle taking information table of the patient with the vehicle taking information table of the current user, searching whether the condition that the patient takes the vehicles of one shift is present, and if the condition is present and the seat number distance is far, setting the condition as low risk; setting as high risk if the seat number appears and the distance between the seat numbers is short;
s404, inquiring whether the MAC address of the patient exists in the MAC addresses stored in the equipment, and if so, dividing the risk into three levels by using the signal intensity; judging the condition of close contact according to the difference information of the time stamps, wherein the larger the difference of the time stamps is, the longer the contact time is, and if the condition of close contact exists, the infection risk grade is set as high risk;
s405, if the equipment owner has the risk of infection, the risk warning module automatically sends an infected risk warning to the owner;
s406, if the equipment owner is a close contact person and the infected risk is high risk, the risk reporting module automatically sends the basic information of the equipment owner to the epidemic situation prevention and control server.
6. The epidemic situation prevention and control early warning and tracing method of claim 1, wherein the information integration module inputs the memory information of the dictation of the patient into the database and converts the memory information into longitude and latitude information through the interface; and integrating the longitude, latitude and time columns of the payment position information table, the positioning information table and the converted memory dictation information table to generate an information integration table.
7. The epidemic prevention and control pre-warning and tracing method according to claim 1, wherein the function of the information integration module is operated in the epidemic prevention and control server except for uploading the information of the data acquisition and storage module.
8. The epidemic prevention and control pre-warning and tracing method of claim 1 wherein all data recorded by uninfected users are stored locally in an encrypted manner and data stored for a time period exceeding the virus latency period are deleted.
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