The Design And Implementation Of College Entrance Examination Papers Checking And Reading System Based On RFID

At present,the college entrance examination is the main means of national selection of talents,and it is the key step for students towards success,which shows the importance of college entrance examination.After the college entrance examination,papers will be collected and electronically scanned into files.An important step before electronic scanning is to count the number of all the papers and to ensure the accuracy of the number of papers.The quality of the examination paper is especially important,the accuracy will affect the students' scores and the normal operation of the college entrance examination work.In the past,it takes a lot of manpower and material resources to count and record the number of college Entrance examination papers.This makes the paper counting work inefficient and accuracy cannot be guaranteed,and manual counting cannot meet the current stage of the college entrance examination work requirements.Radio frequency identification(RFID)technology,as an automatic identification technology,uses radio frequency signals to identify objects and obtain relevant data of secondary objects.By RFID technology,information of objects can be processed without contact,and then recognized objects can be rapidly,accurately and real-time monitored and managed.Considered the large number of test papers,counting the number of papers in a short time is a heavy task.Based on RFID technology and in-depth research on the precise identification of multiple electronic tags algorithm,this thesis builds an intelligent recognition platform and improve the quality and efficiency of the examination papers checking work.This paper designs a system based on RFID technology,which mainly consists of radio frequency identification module,data processing module and database server,realizes the automatic identification,verification,statistic and formation of user report.This design achieve rapid and accurate collection and processing of the relevant data,makes data security and reliable,so that the examination paper management quality and efficiency greatly improved.In this thesis,a three-layer verification scheme is proposed for the security and reliability of the data.The verification scheme proposed CRC-16 error-correcting control method,FMO-coded anti-collision detection and encryption-decryption algorithm to solve the hidden security trouble of tag data thoroughly.It is difficult to accurately read the intensively placed electronic tags of examination papers.A multi antenna mechanism is proposed to detect the RFID tags from different directions,improving the probability of the identification of the label.Finally,through antenna monitor and supply algorithm,data will be the comprehensively optimized,ensuring full coverage of electronic tags and all of them can be read and written.