Design And Implementation Of RFID-based Security Attendance And Indoor Real-time Positioning Management System

As a new wireless technology,RFID radio frequency identification has important practical applications in the field of security.Radio Frequency Identification(RFID)technology,which combines with computer,network and communication technology,plays an important role in the fields of early warning,danger handling and regional management.In this paper,the security requirements of safety attendance and indoor realtime positioning are analyzed.Based on RFID wireless technology,a safety attendance and indoor real-time positioning management system is designed and implemented.The system has the functions of attendance management,personnel monitoring,trajectory tracking and electronic fence early warning.This paper mainly completes the following design work:1.The existing attendance system generally has the problems of low attendance efficiency,instability and poor security.Aiming at this problem,a security attendance subsystem based on RFID is designed and implemented.The system uses the radio frequency chip with working frequency of 2.4 GH as the wireless communication chip between the RFID reader and the electronic tag.Relevant personnel can automatically attend to work at a long distance.At the same time,a multi-period anti-collision algorithm based on parity grouping is added to the system,which makes the RFID reader process a large number of attendance data efficiently and effectively improves attendance efficiency.For the data security problems existing in the RFID attendance system,a one-time password-based RFID security protocol is proposed,which can encrypt attendance information in the process of attendance,prevent illegal elements from attacking the attendance system,and ensure the security of attendance data.2.RFID wireless module will have different recognition distances due to different working frequencies.At the same time,data loss may occur between the RFID reader and the RFID target tag in the communication process,and the different distances between the two modules will also be different.Therefore,this paper proposes a regional location method combining the RFID sensing area and the data packet loss rate of RFID.It is applied to the indoor real-time positioning subsystem based on RFID.At the same time,combined with GPS satellite positioning technology and RFID radio frequency identification technology,the regional electronic fence is established.If the user is outside the electronic fence during normal working and learning time,the system will alarm.The experimental results show that the proposed regional location method based on packet loss rate of RFID can achieve better positioning effect in complex indoor environment,and the alarm function of regional electronic fence is sensitive.3.Design and implement a security attendance and indoor real-time location management subsystem based on RFID.The management subsystem mainly provides users with interaction and operation interface,and provides data storage space.The management subsystem is connected with the hardware equipment for attendance and indoor positioning data acquisition through TCP.The hardware equipment can upload the collected data to the server in real time and store it in the database of the management subsystem.When users query attendance and indoor location information,the management subsystem visually presents the query results to users.Because the application scenarios of the system are mostly enterprises and institutions,and the number of employees is large,a large number of attendance and indoor positioning data will be generated,which may cause pressure on the database.Therefore,the management subsystem designed in this paper automatically saves the historical data in the hard disk at regular intervals,and supports the query and export of historical data,effectively alleviating the pressure of the database and improving the practicability of the system.The system test results show that the security attendance and indoor real-time positioning management system based on RFID designed in this paper can work safely and efficiently.The indoor real-time positioning function has good positioning effect,and the alarm function responds sensitively,and achieves the design goal.