Abstract:

In order to accurately identify the student, monitor the visitors flow rate of classroom, prevent students from cheating, we design an intelligent classroom attendance system based on the Internet of things technology, RFID (Radio Frequency Identification technology), photoelectric detection technology, wireless transmission technology. The system collects information through the RFID module and two alignment type infrared sensors, the data is sent through a serial port to embedded microcontroller, which will show its data processing results and cheating buzzer hints. At last the master controller sends data through the wireless devices to PC system which carries out information statistics and storage. Stream of 51 people is used for system testing, and people who come into the classroom include 3 people who hold a card (card of test people 2), 1 person that hold 2 cards (cards of test people 6,7), the other 47 people who hold their own cards. Test results showed that the test people 2,6 and 7 were appeared to cheat, and the total number that comes into the classroom is fifty. Through the test, the system can identify student accurately, monitor the visitors flow rate of the classroom, prevent cheating especially for a person who holds multi-card and many people who hold a card. It is practical and universal.

Key words: magnetic card identification, monitoring of visitors flow rate, prevent cheating, PC system, information statistics and storage