A Privacy-Preserving Pay-by-Phone Parking System

Parking slot availability check and booking system over IoT


Title of the project                 :            Parking slot availability check and booking system over IoT

Microcontroller                       :           AT89S52

Software                                 :           Embedded C, Keil, Proload

Power Supply                          :           +5V, 500mA Regulated Power Supply

LCD                                        :           HD44780 16-character, 2-line (16X2)

Sensors                                    :           IR Sensors

Crystal                                     :           11.0592MHz

Communication device           :           ESP8266



Now days in many multiplex systems there is a severe problem for car parking systems. There are many slots for car parking, so to park a car one has to look for the all lanes. Moreover there is a lot of men labor involved for this process for which there is lot of investment. So the need is to develop a system which indicates directly which parking slot is vacant in any lane. The project involves a system including infrared transmitter and receiver in every lane and a LED & LCD display. So the person entering parking area can view using IoT module involved and can decide which slot to enter so as to park the car.

Conventionally, car parking systems does not have any intelligent monitoring system. Parking slots are monitored by human beings. All vehicles enter into the parking area and time waste for searching for parking slot. Sometimes it creates blockage. Condition become worse when there are multiple parking lanes and each lane have multiple parking slots. Use of automated system for car parking monitoring will reduce the human efforts.

Here we are using IR sensors to detect the vehicle in that parking slot. So if it is occupied that information is available in the web and free slots are also shown so that one can book the slot before coming itself using IoT. This is to avoid waiting. We are using AT89S52 as our controller and IoT module is interfaced to view the slots using internet.


This project uses regulated 5V, 500mA power supply. Unregulated 12V DC is used for relay. 7805 three terminal voltage regulator is used for voltage regulation. Bridge type full wave rectifier is used to rectify the ac out put of secondary of 230/12V step down transformer.

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