Research On Infectious Source Tracking Method Based On Bluetooth System Of Intelligent Mobile Terminal

Infectious diseases like the new coronavirus have had a huge impact on people’s lives.The most effective prevention and control measures continue to be rapid control of the source of infection.Therefore it is critical to quickly and effectively locate the source of infection and its close contacts.In addition to traditional manual screening,many organizations have developed close contact tracking applications and other digital tracking tools.China also uses a health code system.Manual screening is time-consuming and labor-intensive,and health codes suffer from the problem of inaccurate access to information,which still needs to be matched with manual personal flow transfer and delays in accessing information.Therefore,this paper studies a method to locate the infectious source based on Bluetooth system of intelligent mobile terminal to help people isolate and self-isolate through risk level.And an infectious source tracking system is designed to realize the process of infectious source tracking based on Bluetooth system,which realizes the tracking management of client and server side.Thus,it can quickly locate the infectious source and the close connection information,and provide a reference solution for the regular epidemic management.This paper accomplishes the following.1.Analysis and simulation of the infection level algorithm.The innovation of this paper lies in the risk level assessment.The calculation method of regional risk level and personal risk level is given for the proposed risk level,which is a weight-based scoring algorithm with specific analysis of the influencing factors.And the feasibility of the grade estimation is verified by referring to the classical infectious disease transmission model SEIRS(Susceptible,Exposed,Infected,Recovered)model for Gaussian model simulation.The alarm is triggered when the risk level is determined as high risk.2.Design of infectious source tracking system based on Bluetooth system for mobile terminal.This system exchanges information with mobile devices of surrounding people through low-power Bluetooth.The system architecture design,functional module design,database design and interface design were completed through the specific analysis of low-power Bluetooth propagation protocol and the requirement analysis of the infectious source tracking system.The design has been carried out in the form of flowchart-like diagrams,which provide a design reference for subsequent development.3.Based on the requirement analysis and design,the client side and server side were developed separately to implement the infection source tracking system.The client side is based on Android system and built-in Bluetooth system to realize the information exchange phase of the infection source tracking,and the server side is based on Spring Boot to build the backend framework to realize the information processing phase of the infection source tracking.The information of close contact and location within a certain period of time is stored locally,and the personal risk level and regional risk level can be given by relevant algorithms.Alarm function is provided when entering an area with a high risk level or when the risk level of a person encountered within the Bluetooth interconnection is greater than a set threshold.It can also generate reports on the spread of epidemics over a period of time.The core functionality was implemented and then tested.Finally,a summary and outlook are provided to analyze the shortcomings of the infectious source tracking system and the subsequent development direction.