Whole-process flow adjustment trajectory tracking method based on fusion positioning and health management system

Abstract

The invention discloses a whole-process traffic scheduling trajectory tracking method based on fusion positioning and a health management system, and the method comprises the steps: taking traffic scheduling bracelets as Bluetooth beacons to continuously send a broadcast protocol, and enabling a plurality of AOA Bluetooth base stations installed in an isolated hotel to report to an AOA server after receiving the traffic scheduling bracelets; an accurate relative position of the flow scheduling bracelet in the isolated hotel is calculated based on a triangulation principle, data is uploaded to a flow scheduling cloud platform, and real-time positions and historical tracks of isolated personnel are displayed on an indoor map of the isolated hotel of a real-time map module; the AOA positioning technology with high positioning precision is adopted, the defect that high-precision positioning is difficult to achieve in a building is overcome, whole-process trajectory tracking of isolation personnel, medical personnel, management personnel and auxiliary personnel can be achieved at low cost in the epidemic prevention and control period, the flow regulation efficiency is improved, and the positioning accuracy is improved. In addition, uncertain factors caused by time hysteresis are greatly reduced, the accuracy of flow regulation results is remarkably improved, and an important means is provided for early accurate intervention of epidemic situations.

Description

Technical Field

[0001] The present invention relates to the field of methods and systems for epidemiological investigation (abbreviated as "epidemiological investigation") of public health, and in particular to a full-process epidemiological investigation trajectory tracking method and health management system based on fusion positioning. Background Art

[0002] With globalization, climate change and rapid urbanization, the speed and scope of the spread of acute infectious diseases are constantly expanding, posing severe challenges to global public health security. Controlling the source of infection, cutting off the route of transmission and protecting susceptible populations are important ways to control the spread of infectious diseases. Epidemiological surveys can be used to investigate the source of infection of cases, track and identify close contacts, obtain information such as the onset and medical treatment of cases, clinical characteristics and risk factors, and are an important part of the key to infectious disease prevention and control of "early detection, early reporting, early isolation and early treatment". Rapid and accurate epidemiological surveys can provide an important basis for the formulation of scientific and effective infectious disease prevention and control measures, and help to make early determinations of the source of infection, the scope of transmission, the division of epidemic areas and the assessment of the epidemic situation.

[0003] Epidemic investigation is usually carried out by local disease control or medical institution staff, community grid workers, etc., through face-to-face questioning, telephone surveys, public place code scanning records, public place video surveillance records, etc., to investigate the flow and activity trajectory of infected persons and close contacts. Not only does it consume a lot of manpower, material resources, financial resources and time, but the survey results are also lagging behind, which easily leads to many uncertain factors, making the efficiency and accuracy of the flow investigation low, restricting the effectiveness of infectious disease prevention and control.

[0004] Therefore, the existing full-process epidemiological investigation and trajectory tracking methods still need to be improved and developed. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a full-process epidemiological investigation trajectory tracking method and health management system based on fusion positioning, which can realize the full-process trajectory tracking of isolated personnel, medical staff, management personnel and auxiliary personnel at a relatively low cost during the epidemic prevention and control period, which can not only improve the efficiency of epidemiological investigation, but also greatly reduce the uncertainty factors caused by time lag, and significantly improve the accuracy of epidemiological investigation results.

[0006] The technical solution of the present invention is as follows: A full-process epidemiological investigation trajectory tracking method based on fusion positioning, the stage of quarantined personnel staying in the quarantine hotel includes the following steps: S210. After the quarantined person enters the quarantine hotel, the Bluetooth positioning module in the epidemic investigation bracelet communicates with the AOA Bluetooth base station installed in the lobby of the quarantine hotel as a Bluetooth beacon. The AOA Bluetooth base station in the lobby of the quarantine hotel reports the signal strength and angle information of the Bluetooth beacon to the AOA server. The AOA server calculates the exact position of the epidemic investigation bracelet relative to the AOA Bluetooth base station in the lobby of the quarantine hotel, and uploads the data to the health station module of the epidemic investigation cloud platform for list display; at the same time, the epidemic investigation cloud platform pushes the event information of the quarantined person entering the quarantine hotel to the cloud platform administrator; S220. While the quarantined person is passing through the lobby and corridors of the quarantine hotel to the designated room, the Bluetooth positioning module in the epidemic investigation bracelet continuously sends broadcast protocols as a Bluetooth beacon. Multiple AOA Bluetooth base stations installed in the lobby, corridors and rooms of the quarantine hotel report to the AOA server after receiving the broadcast protocols. The AOA server calculates the accurate relative position of the epidemic investigation bracelet inside the quarantine hotel based on the principle of triangulation, uploads the data to the epidemic investigation cloud platform, and displays the real-time position and historical trajectory of the quarantined person on the indoor map of the quarantine hotel established by the real-time map module. S230. After the quarantined person enters the designated quarantine room, the Bluetooth positioning module in the epidemic investigation bracelet continuously sends the broadcast protocol as a Bluetooth beacon. The AOA Bluetooth base station installed in the quarantine room reports the signal strength and angle information of the Bluetooth beacon to the AOA server. The AOA server calculates the exact position of the epidemic investigation bracelet relative to the AOA Bluetooth base station in the quarantine room, and uploads the data to the health station module of the epidemic investigation cloud platform to show whether the quarantined person is in or outside the quarantine room. S240. If the isolated person leaves the isolation room without permission, the AOA Bluetooth base station in the isolation room will be unable to communicate with the Bluetooth positioning module in the epidemic investigation bracelet. The AOA server will be unable to determine the exact position of the isolation bracelet relative to the AOA Bluetooth base station in the isolation room, triggering an alarm message to be uploaded to the health station module of the epidemic investigation cloud platform, and an alarm message that the isolated person has illegally left the isolation room will be sent to the cloud platform administrator. At the same time, the location trajectory module in the epidemic investigation cloud platform will provide the cloud platform administrator with a positioning data table of the isolated person.

[0007] The method for tracking the full-process epidemiological investigation trajectory based on fusion positioning, wherein: in the step S210, if the location trajectory module in the epidemiological investigation cloud platform receives multiple positioning data such as GPS / Beidou positioning data, WiFi positioning data and / or 4G / 5G base station positioning data of the isolated person, then the optimal positioning data is selected in the priority order of Bluetooth beacon positioning data>GPS / Beidou positioning data>WiFi positioning data>4G / 5G base station positioning data, and the timestamp is written into the positioning data table of the isolated person.

[0008] The full-process epidemic investigation trajectory tracking method based on fusion positioning, wherein: in the step S240, if the isolated person breaks into the key area where the AOA Bluetooth base station is installed without permission, the AOA Bluetooth base station installed in the key area will report to the AOA server after receiving the broadcast protocol sent by the epidemic investigation bracelet, and the AOA server will calculate the accurate relative position of the epidemic investigation bracelet in the key area, upload the data to the epidemic investigation cloud platform, and display the real-time position and historical trajectory of the isolated person on the indoor map of the isolation hotel established by the real-time map module, and at the same time trigger an alarm message to the cloud platform administrator that the isolated person has illegally entered the key area, and the location trajectory module in the epidemic investigation cloud platform will provide the cloud platform administrator with the location data table of the isolated person.

[0009] The method for tracking the full-process epidemic investigation trajectory based on fusion positioning, wherein: in the step S240, if the battery power in the epidemic investigation bracelet is less than 10%, the NB-IOT module in the epidemic investigation bracelet sends a low-battery signal to the epidemic investigation cloud platform through the narrowband Internet of Things; at the same time, the AOA Bluetooth base station in the isolation hotel reports to the AOA server after receiving the broadcast protocol sent by the epidemic investigation bracelet, and the AOA server calculates the accurate relative position of the epidemic investigation bracelet inside the isolation hotel based on the principle of triangulation, uploads the data to the epidemic investigation cloud platform and displays the real-time location and historical trajectory of the isolated person on the indoor map of the isolation hotel established by the real-time map module.

[0010] The full-process epidemiological investigation trajectory tracking method based on fusion positioning, wherein: in the step S240, if the isolated person leaves the isolation hotel without permission, the electronic fence alarm in the epidemiological investigation cloud platform is triggered, and after verifying that all AOA Bluetooth base stations in the isolation hotel cannot communicate with the Bluetooth positioning module in the epidemiological investigation bracelet, an alarm message that the isolated person has illegally left the isolation hotel is sent to the cloud platform administrator; at the same time, the positioning data collection and processing module in the epidemiological investigation bracelet uploads the epidemiological investigation bracelet positioning data obtained by the GPS / Beidou positioning module, 4G / 5G base station positioning module and WiFi positioning module to the epidemiological investigation cloud platform, and the location trajectory module in the epidemiological investigation cloud platform generates the real-time location and historical trajectory of the isolated person on a third-party map.

[0011] The whole process epidemiological investigation trajectory tracking method based on fusion positioning, wherein the stage where the quarantined personnel check into the quarantine hotel also includes the following steps: S250. When the quarantined person leaves the quarantine hotel without permission and the electronic fence in the epidemic investigation cloud platform issues an alarm message that the quarantined person has illegally left the quarantine hotel, the epidemic investigation cloud platform increases the frequency of collecting the positioning data of the quarantined person sent to the epidemic investigation wristband.

[0012] The whole process epidemiological investigation trajectory tracking method based on fusion positioning, wherein the stage where the quarantined personnel check into the quarantine hotel also includes the following steps: S250. If the health sign detection sensor in the epidemic investigation bracelet detects that the body temperature of the isolated person is abnormal, the health sign data collection and processing module will upload the health sign data of the isolated person to the epidemic investigation cloud platform. The epidemic investigation cloud platform will increase the frequency of collecting the health sign data and positioning data of the isolated person sent to the epidemic investigation bracelet.

[0013] The whole process epidemiological investigation trajectory tracking method based on fusion positioning, wherein the stage where the quarantined personnel check into the quarantine hotel also includes the following steps: S260. If the battery power in the epidemic investigation bracelet is less than 10%, the NB-IOT module in the epidemic investigation bracelet sends a low-battery signal to the epidemic investigation cloud platform through the narrowband Internet of Things; at the same time, the positioning data collection and processing module in the epidemic investigation bracelet uploads the last positioning data of the low-battery epidemic investigation bracelet obtained by the GPS / Beidou positioning module, 4G / 5G base station positioning module and WiFi positioning module to the epidemic investigation cloud platform, writes the timestamp into the positioning data table of the isolated person, and the location trajectory module in the epidemic investigation cloud platform generates the last location and historical trajectory of the isolated person on the third-party map.

[0014] The whole process flow survey trajectory tracking method based on fusion positioning, wherein the stage of quarantined personnel entering the quarantine hotel includes the following steps: S110. After entering the country and giving informed consent, the quarantined person wears a flow survey wristband. The cloud platform administrator registers the quarantined person's information and binds the quarantined person's information with the flow survey wristband information. S120: From the time the quarantined person wears the epidemic investigation bracelet, the health sign detection sensor in the epidemic investigation bracelet regularly collects the health sign data and positioning data of the quarantined person according to the collection frequency issued by the epidemic investigation cloud platform, and the health sign data collection and processing module in the epidemic investigation bracelet uploads the data collected by the health sign detection sensor to the epidemic investigation cloud platform; Step S130, when the isolated personnel are on the way to the isolated hotel by means of transportation, the GPS / Beidou positioning module in the epidemic investigation wristband obtains the positioning data of the epidemic investigation wristband by receiving GPS / Beidou satellite signals, the 4G / 5G base station positioning module in the epidemic investigation wristband obtains the positioning data of the epidemic investigation wristband by receiving 4G / 5G base station signals on the way, and the WiFi positioning module in the epidemic investigation wristband obtains the positioning data of the epidemic investigation wristband by receiving AP hotspot signals of WiFi devices on the way, and the positioning data acquisition and processing module in the epidemic investigation wristband uploads all the positioning data obtained by these three independently working positioning modules to the epidemic investigation cloud platform; S140. After receiving the positioning data of the quarantined person, the location trajectory module in the epidemic investigation cloud platform will directly adopt it if there is only one positioning data; if there are multiple positioning data, the optimal positioning data will be selected in the priority order of GPS / Beidou positioning data > WiFi positioning data > 4G / 5G base station positioning data. At the same time, the timestamp will be written into the quarantined person's positioning data table, and the real-time location and historical trajectory of the quarantined person will be generated on a third-party map until the quarantined person arrives at the quarantine hotel.

[0015] A health management system for full-process epidemiological investigation trajectory tracking based on fusion positioning, which is composed of an epidemiological investigation bracelet, an AOA positioning system and an epidemiological investigation cloud platform, and is operated according to any of the above-mentioned full-process epidemiological investigation trajectory tracking methods based on fusion positioning; the epidemiological investigation bracelet is internally provided with a GPS / Beidou positioning module, a 4G / 5G base station positioning module, a WiFi positioning module, a positioning data acquisition and processing module, a Bluetooth positioning module, a health sign detection sensor, a health sign data acquisition and processing module and an NB-IOT module; the AOA positioning system is composed of an AOA Bluetooth base station and an AOA server; the epidemiological investigation cloud platform is composed of a location trajectory module, a real-time map module and a health station module; wherein: The GPS / Beidou positioning module, 4G / 5G base station positioning module and WiFi positioning module are used to collect the positioning data of quarantined persons from entry to quarantined hotels and illegally leaving quarantined hotels without permission according to the collection frequency issued by the epidemic investigation cloud platform. The positioning data collection and processing module is used to upload all the positioning data obtained by these three independently working positioning modules to the epidemic investigation cloud platform; The Bluetooth positioning module acts as a Bluetooth beacon and continuously sends broadcast protocols to communicate with the AOA Bluetooth base stations installed in the lobby, corridors, and rooms of the quarantine hotel; The health sign detection sensor is used to collect the health sign data of the isolated persons at a regular interval according to the collection frequency issued by the epidemic investigation cloud platform. The health sign data collection and processing module is used to upload the health sign data of the isolated persons collected by the health sign detection sensor to the epidemic investigation cloud platform; the NB-IOT module is used to monitor the battery power in the epidemic investigation bracelet and send the power signal to the epidemic investigation cloud platform through the narrowband Internet of Things; AOA Bluetooth base stations are installed in the lobby, corridors and rooms of the quarantine hotel to provide full coverage of AOA signals in these key areas. They are used to report to the AOA server after receiving the broadcast protocol continuously sent by the Bluetooth positioning module as a Bluetooth beacon; the AOA server is used to calculate the accurate relative position of the epidemic investigation bracelet inside the quarantine hotel based on the principle of triangulation, and upload the data to the epidemic investigation cloud platform; The epidemic investigation cloud platform sets the building range covering the quarantine hotel as an electronic fence; the location track module is used to receive the location data of quarantined persons on the way to the quarantine hotel or those who illegally leave the quarantine hotel without permission, select the location data and write the timestamp into the location data to form a location data table, and generate the real-time location and historical trajectory of the quarantined persons on a third-party map; The real-time map module is used to draw a proportional indoor map of the quarantine hotel based on the architectural drawings of the quarantine hotel and the location information of the AOA Bluetooth base stations installed inside the quarantine hotel, and to display the real-time location and historical trajectory of the quarantined personnel on the indoor map of the quarantine hotel based on the data uploaded by the AOA server, and to trigger the alarm information of the quarantined personnel illegally entering the key areas; The health station module is used to display whether the isolated person is in or outside the isolation room based on the data uploaded by the AOA server, and to issue an alarm message if the isolated person illegally leaves the isolation room.

[0016] The full-process epidemic investigation trajectory tracking method and health management system based on fusion positioning provided by the present invention adopts AOA positioning technology with high positioning accuracy (positioning accuracy is less than 3 meters), which makes up for the shortcomings of traditional positioning technologies such as GPS / Beidou positioning, 4G / 5G base station positioning and WiFi positioning that are difficult to achieve high-precision positioning in buildings. It can achieve full-process trajectory tracking of isolated personnel, medical staff, management personnel and auxiliary personnel during the epidemic prevention and control period at a relatively low cost, which not only improves the efficiency of epidemic investigation, but also greatly reduces the uncertainty caused by time lag, and significantly improves the accuracy of epidemic investigation results, providing an important means for early and precise intervention in the epidemic. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are only for explanation purposes and are not intended to limit the scope of the present invention in any way; the shapes and proportional dimensions of the components in the drawings are only schematic and are used to help understand the present invention, but are not intended to specifically limit the shapes and proportional dimensions of the components of the present invention; those skilled in the art can select various possible shapes and proportional dimensions to implement the present invention according to the specific circumstances under the guidance of the present invention.

[0018] Figure 1 It is an architectural block diagram of an embodiment of the full-process epidemiological investigation trajectory tracking health management system based on fusion positioning of the present invention. DETAILED DESCRIPTION

[0019] The specific implementation modes and embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. The described specific embodiments are only used to explain the present invention and are not used to limit the specific implementation modes of the present invention.

[0020] Taking the management of quarantine hotels for inbound personnel during the epidemic prevention and control period as an example, the full-process epidemiological investigation trajectory tracking method based on fusion positioning of the present invention consists of the stage of transfer to the quarantine hotel, the stage of checking into the quarantine hotel and the stage of end of quarantine; multiple AOA Bluetooth base stations are installed in key locations such as the lobby, corridors and rooms of the quarantine hotel in advance, so that the AOA signal can fully cover these key areas; the administrator of the epidemiological investigation cloud platform (referred to as the cloud platform administrator) sets the building range of the quarantine hotel as an electronic fence in the epidemiological investigation cloud platform, and divides the interior of the quarantine hotel into areas with different risk levels; the real-time map module in the epidemiological investigation cloud platform will draw a proportional indoor map of the quarantine hotel based on the architectural drawings of the quarantine hotel and the location information of the AOA Bluetooth base stations installed inside it; the indoor map of the quarantine hotel can be a two-dimensional plan of each floor of the quarantine hotel, or it can be a three-dimensional stereogram that can see through the entire quarantine hotel building, so as to realize the activities of people in different risk levels in the quarantine hotel in the area of ​​the specified risk level of isolation through the epidemiological investigation cloud platform; in addition to trajectory tracking, based on the positioning data uploaded to the epidemiological investigation cloud platform, the real-time physical distance between the quarantined personnel and medical staff, management personnel, auxiliary personnel, etc. can also be calculated in combination with the on-site drawing data for epidemiological investigation analysis.

[0021] Stage 1: Transfer to the quarantine hotel, including the following steps: Step S110: After entering the country and giving informed consent, the quarantined person wears a flow survey wristband, and the cloud platform administrator registers the quarantined person's information and binds the quarantined person's information with the flow survey wristband information; Step S120: Starting from the time when the quarantined person wears the epidemic investigation bracelet, the health sign detection sensor in the epidemic investigation bracelet regularly collects the health sign data and positioning data of the quarantined person according to the collection frequency issued by the epidemic investigation cloud platform; the health sign data collection and processing module in the epidemic investigation bracelet uploads the data collected by the health sign detection sensor to the epidemic investigation cloud platform; the health sign data include the body temperature, heart rate, blood pressure and blood oxygen data of the quarantined person collected by the thermoelectric infrared temperature sensor and the photoelectric volumetric pulse method (PPG) sensor set in the epidemic investigation bracelet. For example, the collection frequency of the health sign data is 1 hour / time by default; the positioning data includes the GPS / Beidou positioning data, 4G / 5G base station positioning data and WiFi positioning data of the quarantined person. For example, the collection frequency of the positioning data is 10 minutes / time by default to ensure that the battery in the epidemic investigation bracelet has a longer battery life; Step S130, when the quarantined personnel take buses, minibuses, taxis and other means of transportation to the quarantine hotel, the GPS / Beidou positioning module in the epidemic investigation wristband obtains the positioning data of the epidemic investigation wristband by receiving GPS / Beidou satellite signals, the 4G / 5G base station positioning module in the epidemic investigation wristband obtains the positioning data of the epidemic investigation wristband by receiving 4G / 5G base station signals on the way, and the WiFi positioning module in the epidemic investigation wristband obtains the positioning data of the epidemic investigation wristband by receiving AP hotspot signals of WiFi devices on the way, and the positioning data acquisition and processing module in the epidemic investigation wristband uploads all the positioning data obtained by these three independently working positioning modules to the epidemic investigation cloud platform; Step S140, after the location trajectory module in the epidemic investigation cloud platform receives the positioning data of the quarantined person, if there is only one positioning data, it will be directly adopted; if there are multiple positioning data, the optimal positioning data will be selected in the priority order of GPS / Beidou positioning data>WiFi positioning data>4G / 5G base station positioning data. At the same time, the timestamp will be written into the positioning data table of the quarantined person, and the real-time location and historical trajectory of the quarantined person will be generated on a third-party map (such as Baidu Map, Amap or Tencent Map, the same below) until the quarantined person arrives at the quarantine hotel.

[0022] Phase 2: Check-in to the quarantine hotel includes the following steps: Step S210, after the quarantined person enters the quarantine hotel, the Bluetooth positioning module in the epidemic investigation bracelet acts as a Bluetooth beacon to communicate with the AOA Bluetooth base station installed in the lobby of the quarantine hotel. The AOA Bluetooth base station in the lobby of the quarantine hotel reports the signal strength and angle information of the Bluetooth beacon (via Ethernet communication, the same below) to the AOA server. The AOA server calculates the exact position of the epidemic investigation bracelet (i.e., the quarantined person, the same below) relative to the AOA Bluetooth base station in the lobby of the quarantine hotel, and uploads the data (via wired or wireless network, the same below) to the health station module of the epidemic investigation cloud platform for list display; at the same time, the epidemic investigation cloud platform pushes the event information of "XX quarantined person enters XX quarantine hotel" to the cloud platform administrator; If the location trajectory module in the epidemic investigation cloud platform receives multiple positioning data such as GPS / Beidou positioning data, WiFi positioning data and / or 4G / 5G base station positioning data of the isolated person, the optimal positioning data is selected in the priority order of Bluetooth beacon positioning data>GPS / Beidou positioning data>WiFi positioning data>4G / 5G base station positioning data, and the timestamp is written into the positioning data table of the isolated person; Step S220: While the quarantined person is passing through the lobby, corridors and other key locations of the quarantine hotel on the way to the designated room, the Bluetooth positioning module in the epidemic survey bracelet continuously sends broadcast protocols as a Bluetooth beacon, and multiple AOA Bluetooth base stations installed in key locations such as the lobby, corridors and rooms of the quarantine hotel report to the AOA server after receiving the broadcast protocols. The AOA server calculates the accurate relative position of the epidemic survey bracelet inside the quarantine hotel based on the principle of triangulation, uploads the data to the epidemic survey cloud platform, and displays the real-time position and historical trajectory of the quarantined person on the indoor map of the quarantine hotel established by the real-time map module; Step S230: After the isolated person enters the designated isolation room, the Bluetooth positioning module in the epidemic investigation bracelet continuously sends the broadcast protocol as a Bluetooth beacon, and the AOA Bluetooth base station installed in the isolation room reports the signal strength and angle information of the Bluetooth beacon to the AOA server. The AOA server calculates the exact position of the epidemic investigation bracelet relative to the AOA Bluetooth base station in the isolation room, and uploads the data to the health station module of the epidemic investigation cloud platform to show whether the isolated person is in the isolation room or outside the isolation room, without showing the specific location, so as to protect the privacy of the isolated person in the isolation room; and the epidemic investigation cloud platform changes the epidemic investigation bracelet in the isolation room to the lock mode; Step S240: If the isolated person leaves the isolation room without permission, the AOA Bluetooth base station in the isolation room cannot communicate with the Bluetooth positioning module in the epidemic survey bracelet, and the AOA server cannot determine the exact position of the isolation bracelet relative to the AOA Bluetooth base station in the isolation room, triggering an alarm message to be uploaded to the health station module of the epidemic survey cloud platform, and sending an alarm message to the cloud platform administrator that the isolated person has illegally left the isolation room. At the same time, the location trajectory module in the epidemic survey cloud platform provides the cloud platform administrator with a positioning data table of the isolated person; If the quarantined person breaks into a key area with an AOA Bluetooth base station installed without permission, the AOA Bluetooth base station installed in the key area will report the broadcast protocol sent by the epidemic investigation bracelet to the AOA server, and the AOA server will calculate the exact relative position of the epidemic investigation bracelet (i.e., the quarantined person) in the key area, upload the data to the epidemic investigation cloud platform, and display the real-time position and historical trajectory of the quarantined person on the indoor map of the quarantine hotel established by the real-time map module. At the same time, it will trigger an alarm message to the cloud platform administrator that the quarantined person has illegally entered the key area, and the location trajectory module in the epidemic investigation cloud platform will provide the cloud platform administrator with a location data table of the quarantined person; If the quarantined person leaves the quarantine hotel without permission, the electronic fence alarm in the epidemic investigation cloud platform will be triggered. After verifying that all AOA Bluetooth base stations in the quarantine hotel cannot communicate with the Bluetooth positioning module in the epidemic investigation bracelet, an alarm message that the quarantined person has illegally left the quarantine hotel will be sent to the cloud platform administrator; at the same time, the positioning data collection and processing module in the epidemic investigation bracelet will upload the epidemic investigation bracelet positioning data obtained by the GPS / Beidou positioning module, 4G / 5G base station positioning module and WiFi positioning module to the epidemic investigation cloud platform, and the location trajectory module in the epidemic investigation cloud platform will generate the real-time location and historical trajectory of the quarantined person on a third-party map; If the battery power in the epidemic investigation bracelet is less than 10%, the NB-IOT (Narrow Band Internet of Things) module in the epidemic investigation bracelet sends a low-battery signal to the epidemic investigation cloud platform through the narrowband Internet of Things; at the same time, the AOA Bluetooth base station in the isolation hotel reports to the AOA server after receiving the broadcast protocol sent by the epidemic investigation bracelet. The AOA server calculates the exact relative position of the epidemic investigation bracelet inside the isolation hotel based on the principle of triangulation, uploads the data to the epidemic investigation cloud platform, and displays the real-time location and historical trajectory of the isolated person on the indoor map of the isolation hotel established by the real-time map module, so that the cloud platform administrator can take measures to replace or charge the epidemic investigation bracelet of the isolated person.

[0023] Step S250: When the quarantined person leaves the quarantine hotel without permission and the electronic fence in the epidemic investigation cloud platform issues an alarm message that the quarantined person has illegally left the quarantine hotel, the epidemic investigation cloud platform increases the frequency of collecting the positioning data of the quarantined person sent to the epidemic investigation wristband, for example, adjusting the frequency of collecting the positioning data to 30 to 60 seconds per time, so as to improve the granularity of monitoring and positioning and achieve more accurate location monitoring; If the health sign detection sensor in the epidemic investigation bracelet detects that the body temperature of the isolated person is abnormal, for example, it exceeds 37°C, the health sign data collection and processing module will upload the health sign data of the isolated person to the epidemic investigation cloud platform. The epidemic investigation cloud platform will increase the collection frequency of the health sign data and positioning data of the isolated person sent to the epidemic investigation bracelet. For example, the collection frequency of health sign data is adjusted to 15 to 30 minutes / time, and the collection frequency of positioning data is adjusted to 30 to 60 seconds / time, so as to improve the granularity of monitoring and positioning, and achieve more accurate health monitoring; Step S260: If the battery power in the epidemic investigation bracelet is less than 10%, the NB-IOT module in the epidemic investigation bracelet sends a low-battery signal to the epidemic investigation cloud platform through the narrowband Internet of Things; at the same time, the positioning data collection and processing module in the epidemic investigation bracelet uploads the last positioning data of the low-battery epidemic investigation bracelet obtained by the GPS / Beidou positioning module, 4G / 5G base station positioning module and WiFi positioning module to the epidemic investigation cloud platform, writes the timestamp into the positioning data table of the quarantined person, and the location trajectory module in the epidemic investigation cloud platform generates the last location and historical trajectory of the quarantined person on the third-party map, so that the cloud platform administrator can take the next step.

[0024] Phase 3, the end of quarantine phase, includes the following steps: Step S310: When the quarantine period of the quarantined person ends, the epidemic investigation cloud platform determines whether the body temperature of the quarantined person is normal based on the health sign data of the quarantined person uploaded by the health sign data collection and processing module in the epidemic investigation wristband. If it is normal, the epidemic investigation wristband in the isolation room is changed to unlock mode; otherwise, the quarantine period of the quarantined person is extended and the process goes to step S210; Step S320: When the quarantined person leaves the lobby of the quarantine hotel, he / she takes off the epidemic investigation bracelet and returns it to the cloud platform administrator. The cloud platform administrator unbinds the quarantined person's information from the bracelet information on the epidemic investigation cloud platform.

[0025] Based on the above-mentioned full-process epidemic investigation trajectory tracking method, the present invention also proposes a full-process epidemic investigation trajectory tracking health management system based on fusion positioning, which is composed of an epidemic investigation bracelet, an AOA positioning system and an epidemic investigation cloud platform; wherein, the internal part of the epidemic investigation bracelet is equipped with a GPS / Beidou positioning module, a 4G / 5G base station positioning module, a WiFi positioning module, a positioning data acquisition and processing module, a Bluetooth positioning module, a health sign detection sensor, a health sign data acquisition and processing module and a NB-IOT module; the AOA positioning system is composed of an AOA Bluetooth base station and an AOA server; the epidemic investigation cloud platform includes a location trajectory module, a real-time map module, a health station module, a health monitoring module and a personnel wristband information management module. The health monitoring module is used to centrally display the system data, and the personnel wristband information management module is used to centrally display personnel information, wristband information, and personnel and wristband binding relationship information.

[0026] The GPS / Beidou positioning module, 4G / 5G base station positioning module and WiFi positioning module are used to collect the positioning data of quarantined personnel from the time they enter the quarantine hotel to the quarantine hotel and those who illegally leave the quarantine hotel without permission at a regular interval according to the collection frequency issued by the epidemic investigation cloud platform. The positioning data collection and processing module is used to upload all the positioning data obtained by these three independently working positioning modules to the epidemic investigation cloud platform.

[0027] The Bluetooth positioning module acts as a Bluetooth beacon and continuously sends broadcast protocols to communicate with the AOA Bluetooth base stations installed in the lobby, corridors, and rooms of the quarantine hotel.

[0028] The health sign detection sensor is used to collect the health sign data of isolated persons at a regular interval according to the collection frequency issued by the epidemic investigation cloud platform. The health sign data collection and processing module is used to upload the health sign data of isolated persons collected by the health sign detection sensor to the epidemic investigation cloud platform; the NB-IOT module is used to monitor the battery power in the epidemic investigation bracelet and send the power signal to the epidemic investigation cloud platform through the narrowband Internet of Things.

[0029] AOA Bluetooth base stations are installed in key locations such as the lobby, corridors and rooms of the quarantine hotel, so that these key areas are fully covered by the AOA signals. They are used to report to the AOA server after receiving the broadcast protocol continuously sent by the Bluetooth positioning module as a Bluetooth beacon; the AOA server is used to calculate the accurate relative position of the epidemic investigation bracelet inside the quarantine hotel based on the principle of triangulation, and upload the data to the epidemic investigation cloud platform.

[0030] The epidemic investigation cloud platform sets the building scope covering the quarantine hotel as an electronic fence; the location trajectory module is used to receive the positioning data of quarantined personnel on the way to the quarantine hotel and those who illegally leave the quarantine hotel without permission, select the positioning data preferentially and write the timestamp into the positioning data to form a positioning data table, as well as generate the real-time location and historical trajectory of the quarantined personnel on a third-party map.

[0031] The real-time map module is used to draw a proportional indoor map of the quarantine hotel based on the architectural drawings of the quarantine hotel and the location information of the AOA Bluetooth base stations installed inside it, and to display the real-time location and historical trajectory of the quarantined persons on the indoor map of the quarantine hotel based on the data uploaded by the AOA server, as well as to trigger alarm information for illegal entry of quarantined persons into key areas.

[0032] The health station module is used to display whether the isolated person is in or outside the isolation room based on the data uploaded by the AOA server, and to issue an alarm message if the isolated person illegally leaves the isolation room.

[0033] The full-process epidemic investigation trajectory tracking method and health management system based on fusion positioning provided by the present invention adopts AOA positioning technology with high positioning accuracy (positioning accuracy is less than 3 meters), which makes up for the shortcomings of traditional positioning technologies such as GPS / Beidou positioning, 4G / 5G base station positioning and WiFi positioning that are difficult to achieve high-precision positioning in buildings. It can achieve full-process trajectory tracking of isolated personnel, medical staff, management personnel and auxiliary personnel during the epidemic prevention and control period at a relatively low cost, which not only improves the efficiency of epidemic investigation, but also greatly reduces the uncertainty caused by time lag, and significantly improves the accuracy of epidemic investigation results, providing an important means for early and precise intervention in the epidemic.

[0034] It should be noted that the method and system for full-process epidemiological investigation and tracking based on the fusion positioning bracelet of the present invention has a good user experience, does not use complex structures to achieve simple functions, and does not use conventional or simple features for combination or stacking. Therefore, it conforms to the common sense of technological improvement and is practical.

[0035] The contents not described in detail in this specification belong to the existing technologies known to ordinary technicians in this field, such as AOA positioning, triangulation principle, narrowband Internet of Things, etc.

[0036] It should be understood that the above is only a preferred embodiment of the present invention and is not sufficient to limit the technical solutions of the present invention. For ordinary technicians in this field, within the spirit and principles of the present invention, additions, substitutions, changes or improvements can be made according to the above description. For example, the full-process trajectory tracking of medical staff, management personnel and auxiliary personnel during the epidemic prevention and control period, and the trajectory tracking of personnel in simulated scenarios conducted during the flow investigation process, and all these technical solutions after additions, substitutions, changes or improvements should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A full-process epidemiological investigation trajectory tracking method based on fusion positioning, characterized in that: The stage of quarantined personnel staying in quarantine hotels includes the following steps: S210. After the quarantined person enters the quarantine hotel, the Bluetooth positioning module in the epidemic investigation bracelet communicates with the AOA Bluetooth base station installed in the lobby of the quarantine hotel as a Bluetooth beacon. The AOA Bluetooth base station in the lobby of the quarantine hotel reports the signal strength and angle information of the Bluetooth beacon to the AOA server. The AOA server calculates the exact position of the epidemic investigation bracelet relative to the AOA Bluetooth base station in the lobby of the quarantine hotel, and uploads the data to the health station module of the epidemic investigation cloud platform for list display; at the same time, the epidemic investigation cloud platform pushes the event information of the quarantined person entering the quarantine hotel to the cloud platform administrator; S220. While the quarantined person is passing through the lobby and corridors of the quarantine hotel to the designated room, the Bluetooth positioning module in the epidemic investigation bracelet continuously sends broadcast protocols as a Bluetooth beacon. Multiple AOA Bluetooth base stations installed in the lobby, corridors and rooms of the quarantine hotel report to the AOA server after receiving the broadcast protocols. The AOA server calculates the accurate relative position of the epidemic investigation bracelet inside the quarantine hotel based on the principle of triangulation, uploads the data to the epidemic investigation cloud platform, and displays the real-time position and historical trajectory of the quarantined person on the indoor map of the quarantine hotel established by the real-time map module. S230. After the quarantined person enters the designated quarantine room, the Bluetooth positioning module in the epidemic investigation bracelet continuously sends the broadcast protocol as a Bluetooth beacon. The AOA Bluetooth base station installed in the quarantine room reports the signal strength and angle information of the Bluetooth beacon to the AOA server. The AOA server calculates the exact position of the epidemic investigation bracelet relative to the AOA Bluetooth base station in the quarantine room, and uploads the data to the health station module of the epidemic investigation cloud platform to show whether the quarantined person is in or outside the quarantine room. S240. If the isolated person leaves the isolation room without permission, the AOA Bluetooth base station in the isolation room will be unable to communicate with the Bluetooth positioning module in the epidemic investigation bracelet. The AOA server will be unable to determine the exact position of the isolation bracelet relative to the AOA Bluetooth base station in the isolation room, triggering an alarm message to be uploaded to the health station module of the epidemic investigation cloud platform, and an alarm message that the isolated person has illegally left the isolation room will be sent to the cloud platform administrator. At the same time, the location trajectory module in the epidemic investigation cloud platform will provide the cloud platform administrator with a positioning data table of the isolated person.

2. The whole process flow investigation trajectory tracking method based on fusion positioning according to claim 1 is characterized in that: In step S210, if the location trajectory module in the epidemic investigation cloud platform receives multiple positioning data such as GPS / Beidou positioning data, WiFi positioning data and / or 4G / 5G base station positioning data of the isolated person, the optimal positioning data is selected in the priority order of Bluetooth beacon positioning data>GPS / Beidou positioning data>WiFi positioning data>4G / 5G base station positioning data, and the timestamp is written into the positioning data table of the isolated person.

3. The whole process flow investigation trajectory tracking method based on fusion positioning according to claim 1 is characterized in that: In the step S240, if the isolated person breaks into the key area where the AOA Bluetooth base station is installed without permission, the AOA Bluetooth base station installed in the key area will report to the AOA server after receiving the broadcast protocol sent by the epidemic survey bracelet. The AOA server calculates the exact relative position of the epidemic survey bracelet in the key area, uploads the data to the epidemic survey cloud platform, and displays the real-time position and historical trajectory of the isolated person on the indoor map of the isolation hotel established by the real-time map module. At the same time, it triggers an alarm message to the cloud platform administrator that the isolated person has illegally entered the key area, and the location trajectory module in the epidemic survey cloud platform provides the cloud platform administrator with the positioning data table of the isolated person.

4. The whole process flow investigation trajectory tracking method based on fusion positioning according to claim 1 is characterized in that: In the step S240, if the battery power in the epidemic investigation bracelet is less than 10%, the NB-IOT module in the epidemic investigation bracelet sends a low-battery signal to the epidemic investigation cloud platform through the narrowband Internet of Things; at the same time, the AOA Bluetooth base station in the isolation hotel reports to the AOA server after receiving the broadcast protocol sent by the epidemic investigation bracelet. The AOA server calculates the exact relative position of the epidemic investigation bracelet inside the isolation hotel based on the principle of triangulation, uploads the data to the epidemic investigation cloud platform, and displays the real-time location and historical trajectory of the isolated personnel on the indoor map of the isolation hotel established by the real-time map module.

5. The whole process flow investigation trajectory tracking method based on fusion positioning according to claim 1 is characterized in that: In the step S240, if the isolated person leaves the isolation hotel without permission, the electronic fence alarm in the epidemic investigation cloud platform will be triggered, and after verifying that all AOA Bluetooth base stations in the isolation hotel cannot communicate with the Bluetooth positioning module in the epidemic investigation bracelet, an alarm message that the isolated person has illegally left the isolation hotel will be sent to the cloud platform administrator; at the same time, the positioning data collection and processing module in the epidemic investigation bracelet will upload the epidemic investigation bracelet positioning data obtained by the GPS / Beidou positioning module, 4G / 5G base station positioning module and WiFi positioning module to the epidemic investigation cloud platform, and the location trajectory module in the epidemic investigation cloud platform will generate the real-time location and historical trajectory of the isolated person on a third-party map.

6. The whole process flow investigation trajectory tracking method based on fusion positioning according to claim 1 is characterized in that: The stage where quarantined persons check into quarantine hotels also includes the following steps: S250. When the quarantined person leaves the quarantine hotel without permission and the electronic fence in the epidemic investigation cloud platform issues an alarm message that the quarantined person has illegally left the quarantine hotel, the epidemic investigation cloud platform increases the frequency of collecting the positioning data of the quarantined person sent to the epidemic investigation wristband.

7. The whole process flow investigation trajectory tracking method based on fusion positioning according to claim 1 is characterized in that: The stage where quarantined persons check into quarantine hotels also includes the following steps: S250. If the health sign detection sensor in the epidemic investigation bracelet detects that the body temperature of the isolated person is abnormal, the health sign data collection and processing module will upload the health sign data of the isolated person to the epidemic investigation cloud platform. The epidemic investigation cloud platform will increase the frequency of collecting the health sign data and positioning data of the isolated person sent to the epidemic investigation bracelet.

8. The whole process flow investigation trajectory tracking method based on fusion positioning according to claim 1 is characterized in that: The stage where quarantined persons check into quarantine hotels also includes the following steps: S260. If the battery power in the epidemic investigation bracelet is less than 10%, the NB-IOT module in the epidemic investigation bracelet sends a low-battery signal to the epidemic investigation cloud platform through the narrowband Internet of Things; at the same time, the positioning data collection and processing module in the epidemic investigation bracelet uploads the last positioning data of the low-battery epidemic investigation bracelet obtained by the GPS / Beidou positioning module, 4G / 5G base station positioning module and WiFi positioning module to the epidemic investigation cloud platform, writes the timestamp into the positioning data table of the isolated person, and the location trajectory module in the epidemic investigation cloud platform generates the last location and historical trajectory of the isolated person on the third-party map.

9. The whole process flow investigation trajectory tracking method based on fusion positioning according to claim 1 is characterized in that: The stage of quarantined persons entering the quarantine hotel includes the following steps: S110. After entering the country and giving informed consent, the quarantined person wears a flow survey wristband. The cloud platform administrator registers the quarantined person's information and binds the quarantined person's information with the flow survey wristband information. S120: From the time the quarantined person wears the epidemic investigation bracelet, the health sign detection sensor in the epidemic investigation bracelet regularly collects the health sign data and positioning data of the quarantined person according to the collection frequency issued by the epidemic investigation cloud platform, and the health sign data collection and processing module in the epidemic investigation bracelet uploads the data collected by the health sign detection sensor to the epidemic investigation cloud platform; Step S130, when the isolated personnel are on the way to the isolated hotel by means of transportation, the GPS / Beidou positioning module in the epidemic investigation wristband obtains the positioning data of the epidemic investigation wristband by receiving GPS / Beidou satellite signals, the 4G / 5G base station positioning module in the epidemic investigation wristband obtains the positioning data of the epidemic investigation wristband by receiving 4G / 5G base station signals on the way, and the WiFi positioning module in the epidemic investigation wristband obtains the positioning data of the epidemic investigation wristband by receiving AP hotspot signals of WiFi devices on the way, and the positioning data acquisition and processing module in the epidemic investigation wristband uploads all the positioning data obtained by these three independently working positioning modules to the epidemic investigation cloud platform; S140. After receiving the positioning data of the quarantined person, the location trajectory module in the epidemic investigation cloud platform will directly adopt it if there is only one positioning data; if there are multiple positioning data, the optimal positioning data will be selected in the priority order of GPS / Beidou positioning data > WiFi positioning data > 4G / 5G base station positioning data. At the same time, the timestamp will be written into the quarantined person's positioning data table, and the real-time location and historical trajectory of the quarantined person will be generated on a third-party map until the quarantined person arrives at the quarantine hotel.

10. A health management system for full-process epidemiological investigation and tracking based on fusion positioning, characterized in that: It is composed of an epidemic investigation bracelet, an AOA positioning system and an epidemic investigation cloud platform, and operates according to the full-process epidemic investigation trajectory tracking method based on fusion positioning as described in any one of claims 1 to 9; the internal part of the epidemic investigation bracelet is equipped with a GPS / Beidou positioning module, a 4G / 5G base station positioning module, a WiFi positioning module, a positioning data acquisition and processing module, a Bluetooth positioning module, a health sign detection sensor, a health sign data acquisition and processing module and an NB-IOT module; the AOA positioning system is composed of an AOA Bluetooth base station and an AOA server; the epidemic investigation cloud platform is composed of a location trajectory module, a real-time map module and a health station module; wherein: The GPS / Beidou positioning module, 4G / 5G base station positioning module and WiFi positioning module are used to collect the positioning data of quarantined persons from entry to quarantined hotels and illegally leaving quarantined hotels without permission according to the collection frequency issued by the epidemic investigation cloud platform. The positioning data collection and processing module is used to upload all the positioning data obtained by these three independently working positioning modules to the epidemic investigation cloud platform; The Bluetooth positioning module acts as a Bluetooth beacon and continuously sends broadcast protocols to communicate with the AOA Bluetooth base stations installed in the lobby, corridors, and rooms of the quarantine hotel; The health sign detection sensor is used to collect the health sign data of the isolated persons at a regular interval according to the collection frequency issued by the epidemic investigation cloud platform. The health sign data collection and processing module is used to upload the health sign data of the isolated persons collected by the health sign detection sensor to the epidemic investigation cloud platform; the NB-IOT module is used to monitor the battery power in the epidemic investigation bracelet and send the power signal to the epidemic investigation cloud platform through the narrowband Internet of Things; AOA Bluetooth base stations are installed in the lobby, corridors and rooms of the quarantine hotel to provide full coverage of AOA signals in these key areas. They are used to report to the AOA server after receiving the broadcast protocol continuously sent by the Bluetooth positioning module as a Bluetooth beacon; the AOA server is used to calculate the accurate relative position of the epidemic investigation bracelet inside the quarantine hotel based on the principle of triangulation, and upload the data to the epidemic investigation cloud platform; The epidemic investigation cloud platform sets the building range covering the quarantine hotel as an electronic fence; the location track module is used to receive the location data of quarantined persons on the way to the quarantine hotel or those who illegally leave the quarantine hotel without permission, select the location data and write the timestamp into the location data to form a location data table, and generate the real-time location and historical trajectory of the quarantined persons on a third-party map; The real-time map module is used to draw a proportional indoor map of the quarantine hotel based on the architectural drawings of the quarantine hotel and the location information of the AOA Bluetooth base stations installed inside the quarantine hotel, and to display the real-time location and historical trajectory of the quarantined personnel on the indoor map of the quarantine hotel based on the data uploaded by the AOA server, and to trigger the alarm information of the quarantined personnel illegally entering the key areas; The health station module is used to display whether the isolated person is in or outside the isolation room based on the data uploaded by the AOA server, and to issue an alarm message if the isolated person illegally leaves the isolation room.

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