The Intelligence Classroom Attendance System Based On Openwrt Router

As an important part of the school daily management,efficient teaching management can enhance students' discipline,improve the quality of the teachers'teaching to make daily teaching management more convenient and smoothly.The current classroom management form is mostly used as the teacher calling attendance,where whole semester of the course is required manual statistics attendance.It occupies the teachers' time and affects the teaching quality.The students may replace the roll call,and the statistics are very tedious.With the rapid development of computer field,many new science and technologies are born,which can be widely used in modern classroom management mode.The shortcomings of the traditional model have been exposed and gradually amplified,new management concept and technical means are subtle changes classroom management mode,make it tend to be more intelligent,informatization.This system combines the shortcomings of current classroom management mode,and puts forward a complete set of intelligent classroom management solutions based on current teaching management.It includes router for intelligent attendance,camera for automatically taking pictures,app for students and teachers end to master class information,server for automatic calculations and operating points.Students use a mobile device to connect openwrt wireless networks,the device regularly send request frame detection.When the students enter the classroom,a wireless router receives the request frame detection and resolve the equipment information based on MAC frame format.Check the student information in the database of server and identify.You also need to judge in and out of the classroom and then generate a attendance information to be recorded in the attendence table.In order to prevent students from forgetting their mobile phones or cell phones without electricity and other unexpected situations,it designs the classroom machine to assist the attendance function,the students provide corresponding attendance information to the teachers to assist the students to complete the attendance.In addition to using a wireless router for attendance,students can log in to the app to select his/her own precise position in the classroom for secondary attendance.Using the crontab timer of the Linux server,the class time is set as the start time of the timer task,and the timer task is set to take pictures of the camera.During the class time,the camera is automatically controlled by the timer to take pictures and store the information in the database.The web server accurately cuts out and saves the pictures according to the position information of the classrooms uploaded by the students.All pictures serve as the basis for the second attendance and eliminate the occurrence of cheating on attendance.For all attendance data,it designs automatic scoring function and accurately calculates the effective attendance time for each semester of each course for the students,thus to calculate the score of the course,reducing the teacher's participation in the class attendance and being more fair and efficient.This article firstly discusses the overall framework of the intelligent classroom management system and the overall functions that the entire system needs to achieve from a macro perspective.Then it's divided into physical layer,gateway layer,server layer and mobile applications according to the architecture hierarchy.Then it analyzes the specific needs of each level to achieve the function.Each level is divided into smaller functional modules,and then these functional modules are carefully designed and implemented.Finally,functional tests are performed on each functional module in the actual teaching environment combining the entire system to ensure that all functions can be achieved and meet the actual teaching tasks requirements.