10-04-2017, 09:02 PM
source code for rfid based attendance system in vb net
RFID Based Attendance System are also known as show card/ proximity card attendance system and are used for monitoring attendance electronically. The main objective of the system is to uniquely identify and to make attendance for a person.
RFID Based Attendance System
This requires a unique product, which has the capability of distinguishing different person. This is possible by the new emerging technology RFID (Radio Frequency Identification). The main parts of an RFID system are RFID tag (with unique ID number) and RFID reader (for reading the RFID tag). In this system, RFID tag and RFID reader used are operating at 125KHz. The EEPROM used for storing the details has the capability of storing 256 person details at a time. The PC can be used for restoring all the details of attendance made.
The hardware needed is an RFID reader and a cross connection serial cable. The RFID reader used here has an onboard MAX 232 and hence can be directly connected to the PC. There is no need of microcontroller in between.
This application works for two RFID tags i.e., for a maximum of two people. It is assumed that there are two people carrying ID card with RFID tags pasted on them. The unique ID is known and stored in the software.
When the software starts, we can enter the name of the two students corresponding to the tags in the Tag 1 and Tag 2 text box. Now press the start button to start the application. This will connect the software with the RFID reader through serial port using inbuilt .Net libraries.
Now when the first student swaps the card (RFID Tag) in front of the reader, his name along with date and time stamp will appear in the right side display box. Similar thing will happen every time any of the cards will be swapped and the date and time data will get stored.
In case you want to terminate the connection with the RFID reader press the stop button.
This is a very simple example to store the attendance with the time and date stamp. This can be extended to n number of members with many additional functionalities.