| As a core application of campus digital security,the access control system has been widely used in many campuses.It can strengthen campus security management,build an effective security barrier for schools,effectively protect campus personnel,and reduce potential threats from outsiders.However,the existing access control system is lacking in prevention in the face of abnormalities or security threats to campus personnel.With the improvement of people’s security awareness,the demand for campus security has gradually changed from key departments and key locations to comprehensive security.The access control system has gradually increased.Faced with the massive access data generated by the system,analysis and mining are based on the access control security data.It is of great practical significance to realize an intelligent campus security management system.The main research work of the thesis is as follows:(1)Analyzed the campus security function requirements based on access control data,including entry and exit records,track query,personnel heat map,peer analysis,body temperature monitoring,apartment entry and exit records,apartment abnormal records,apartment abnormal statistics,apartment real-time bed checking,Abnormal detection and other functions.(2)A method for detecting abnormal behavior of personnel based on campus access control data is proposed.Aiming at the path sequence composed of daily entry and exit locations and the time sequence composed of entry and exit times in the access control data,the PrefixSpan algorithm is used for frequent pattern mining to generate a frequent sequence path library,and the detection sequence is treated with relative edit distance,abnormal time,and relative support Abnormal situations are quantitatively characterized,and effective detection of abnormal behaviors of personnel is realized.(3)Designed and implemented a campus security management system based on access control data.Based on the three-tier Web structure under the B/S architecture model,the system is divided into six parts:system management,data management,anomaly detection,campus security,apartment security,and message center,and each part is designed and implemented in detail.Finally,a simulated production environment test was carried out on the designed system to verify the usability of the system. |