Access Control System And Attendance Checking System Based On UHF RFID

With the increasing mobility of staff, people’s identity becomes complicated. Many companies are equipped with access control and attendance checking equipment. This behavior is to ensuring the safety of the company’s property and improving the efficiency of the company. There are few people through the small companies, but employees through the company frequently. Building a system which based on UHF RFID is in order to solving the problem.Firstly, summarizing the function, that is divided into two parts. Describing the acquisition of data and designing of employee login interface. Including communications between UHF RFID devices and computer, sending commands to the Access Controller after getting the data, designing the program flow of employees landing. Besides,Background functional design was introduced too, such as creating a database, building administrator login system. Personnel positioning function is highlighted, such as designing the ranging experiment, determining ranging model, improving LANDMARC algorithm, designing the positioning model. In the system, there are embedded UHF RFID Module with HIK-PFM104, single door network access controller, and computer with RS485 serial port. Finally, according to the final results, some improvements have been proposed.Access control and attendance checking system can achieve some features include security, recording attendance, general inquiries, generating payroll reports automatically,reading the employee ID number remotely, recording time information of attendance,and learning the whereabouts of employees.