Campus Safety Supervision System With Student Orientation And Attendance Function

Campus security is an important part of social public security,has been widely concerned by the whole society,it is related to the healthy development of every student and learning.A safe campus environment has many benefits for students' learning and growth.Both schools and parents want to pay attention to students' activity track in school and whether they arrive at the campus on time and attend classes on time.These information need to be solved by scientific methods.In this paper,Zig Bee wireless sensor technology and AGPS technology are applied to campus security.Scientific data statistics for students' location and attendance is helpful to improve students' safety and teaching quality on campus.Based on Changchun Science and technology plan project "Research on Key Technologies of smart campus management platform based on big data" and Jilin Science and technology development plan project "Research on Key Technologies of safe campus construction based on multi-sensor big data fusion",this paper designs and implements a set of campus safety supervision system with functions of internal orientation and automatic attendance statistics for students.This paper mainly studies and completes the following four aspects:(1)proposes a trunk Zig Bee network composed of coordinator,Zig Bee router,reference point and mobile node,and completes the hardware circuit design and software programming of each node.Zig Bee technology is used indoors to realize the accurate identification of students' identity,necessary real-time positioning and automatic attendance.Analyzing the data of positioning and attendance can know the students' floor activity track and classroom attendance.(2)A real-time location and automatic attendance system based on AGPS technology is designed.AGPS technology is a combination of GPS technology and mobile communication operation base station technology.Using AGPS technology to record the coordinate data and time data of students outside,analyzing the coordinate data and time data of students outside,we can know the activities of students in the campus and the time of entering and leaving the school.(3)In order to improve thelocation accuracy,a personnel location algorithm based on the optimal estimation technology is proposed.Using Kalman filter algorithm to process the RSSI value,improve the accuracy of the RSSI value,using three side measurement method to get the coordinates of students.(4)Using software development tools to write client,server and database.The client realizes the function of displaying students' location and attendance in two-dimensional plane,the server connects Zig Bee network and GSM /GPRS network,and the database stores students' location and attendance data.After the actual test,the campus supervision system designed in this paper can complete the positioning data of the students' activity track in the campus and the attendance time in school,check the positioning data of the students,and inform the students of the hidden risks,so as to avoid the existence of security risks.Checking the attendance time of students and the attendance rate of students in class is conducive to improving the teaching quality of the school.The technology studied in this paper has certain application value and technical support for the construction of campus safety supervision system,and also plays a certain role in the construction of smart campus.