NFC based 2 wheeler security system


The 2 wheeler NFC security demo consists of the MCU board mounted with relay, LEDs for indication & a regulator and is connected through RS-232 cable to a reader board (powered by MCU board) consisting of NFC reader and NFC Antenna coil. Due to the use of RS232 driver on both the boards the distance between the Reader board and the MCU board can easily go up to 2 meters. The reader board is placed near to the Ignition key switch and NFC tag will be one of the items tagging along with the vehicle key in the Key chain. When the user inserts the ignition key in the vehicle and turns on the ignition, the board gets powered. The NFC tag being part of the Ignition Key Keychain, gets authenticated by reader and relay is energized which in turn routes the battery power to the other parts of the vehicle. In the absesnce of or in-appropriate /un-paired tag the authentication fails and the relay is not energized and the vehicle doesn't start.



Features

• Checks for Valid NFC tag at Power on (waits for 5 Sec).
• Ok indication via green LED and fail indication via Red Led.
• Both relays On after Successful NFC tag validation. This is Normal Mode (with no jumper J1)
• For re-validation Power-On necessary.
• Can store Ids of 2 NFC cards.
• Learn mode enabled with Jumper J1 populated and valid for 5 sec after Power On.
• Ok indication via green LED and fail indication via Red Led.
• No relay operation in Learn mode.
• Id learning is saved as per LIFO pattern and only 2 Ids are in programmed in the internal EeProm of MCU.



Application:

• 2-wheeler security system
• Application which needs NFC authentication system



Product Benefits

• Low cost technology as it is widely being used in hundreds of commercial applications.
• High level of security as is well proven in the use in banking applications.
• Easy secure management of tag/key loss through Mobile channel.




Solution uses a low-cost Kinetis MCU from NXP



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