The concern is for the physical property and also for the intellectual property. For this reason only the authorized person with a valid RFID tag is allowed into the secured premises. This tag contains an integrated circuit that is used for storing and processing information, modulating and demodulating the radio frequency signal that is being transmitted. RFID based car parking uses a microcontroller along with sensing circuits monitoring entry and exit of cars. The car owners are allowed an entry only when their RFID card is swiped .The amount in the card automatically gets reduced with a display indication besides indicating the available number of parking. A buzzer sound comes while the card is swiped. Upon every entry of a car the parking availability gets reduced by one number while every exit the number increases. A standard power supply is used. A seven segment display displays the status. A switch is used in place of RFID for minimizing the project cost.
Q. Which microcontroller is used in this project?
Ans. Microcontroller of 8051 family AT89S52 is used.
Q. What do you meant by LCD 16*2?
Ans. 16*2 alphanumeric Liquid Crystal Display (LCD) which means it can display alphabets
along with numbers on 2 lines each containing 16 characters.
Q. Why LM 7805 IC is used?
Ans. Because it gives the constant output voltage 5 V with any input which range is between 7 V to 24 V.
Q. How many ICs are used in this project?
Ans. There are two ICs are used which are LM7805 and L293D.