Research And Implementation Of Campus Location System Based On RSSI

Students are the future of the country.With the construction of “Smart campus”,the education of students and the safety of their campuses have attracted more and more attention from students' parents,schools and all sectors of society.This thesis researches and designs a set of RFID campus positioning system based on RSSI,which can show the daily dynamics of students in school and daily attendance at school.The system researches and implements the campus positioning system based on RSSI.Through the research and analysis of RFID radio frequency technology and the positioning needs of students in the campus environment,the hardware and algorithms suitable for the system are designed.When a student carries a positioning tag with a unique ID and passes through the campus site covered by the radio frequency signal of the base station,the base station ARM host completes the interaction with the student tag information through the external dual antenna of the reader.The location information in the offline fingerprint library is matched,and the real-time location dynamics of the students are identified through algorithm matching.For the problems of tag collision during tag matching with the base station,and errors in the dynamic position recognition process for students,this article uses the anti-collision algorithm,KNN algorithm,and Kalman filter algorithm applicable to this system to verify and debug the system scheme.Through the simulation test of the campus positioning system designed in this paper in the actual campus environment,it is well verified that dynamic monitoring of students' location in campus environment is realized within the allowable error range.