SMART DOOR LOCK

ABSTRACT

The safety in the house is very important.This project presents a prototype smart door lock which can be used to enhance security of a door. Here we are utilizing Bluetooth technology to scan Bluetooth Devices at the door knob for automatic door lock purposes.It searches for the user and senses approach and automatically unlocks the door, without having reach for the phone. The microcontroller will read the signal and verify the signal whether it is the right person or not to open the door. Also there is an android application which can be used to control various appliances inside the house as well as door lock.

INTRODUCTION Security describes protection of life and property.The safety in the house is very important. Besides the traditional method door that used a key can be easily open by not authorized person or burglar if they have the right key. This will allows them to steal the entire valuable thing in the house.Nowadays the telecommunication technologies become wider and more new features exist to make human life better This project will use an bluetooth feature in mobile phone to automatically open the door so that bluetooth technology syncs your phone directly with the lock .It will automatic open if authorized person is detected. The door will open for a certain delay and the door automatically closes within this time.

BLOCK DIAGRAM

HARDWARE

AVR AVR ( Advanced Virtual RISC)

microcontroller developed by Atmel in

1996. In this system we use Atmega 32

that has 32 kb of memory . It is fast and very easy to program

in C language

RFID

Radio-frequency identification (RFID) is the wireless use of electromagnetic fields to transfer data for the purposes of automatically identifying and tracking tags attached to objects.

The tags contain electronically stored information. Some tags are powered by electromagnetic induction from magnetic fields produced near the reader

Other types have a local power source such as a battery and may operate at hundreds of meters from the reader

RELAYA relay is used to isolate one electrical circuit from another.

It allows a low current control circuit to make or break an electrically isolated high current circuit path.

Cd4016

A bilateral switch which uses a special CMOS circuit called a transmission gate. The circuit behaves as a SPST (single pole/single throw) switch which is under electronic control.

MAX232(voltage level converter)

The MAX232 is a dual driver/receiver and

typically converts the RX, TX.

The drivers provide RS-232 voltage level

outputs from a single + 5 V supply via on-chip

charge pumps and external capacitor

BLUETOOTH MODULE

Bluetooth is a high-speed, low-power microwave wireless link technology, designed to connect phones, laptops, PDAs and other portable equipment together The technology uses modifications of existing wireless LAN techniques but is most notable for its small size and low cost.

LCD MODULE

 LCD is a flat panel display, electronic visual display that uses the light modulating properties of liquid crystals.

Liquid crystals do not emit light directly. LCD is more energy efficient than CRT and it consumes

less power

SOFTWARE

Atmel AVR Studio 5

It is small and resonabily simpler to learn ,understand,program and debug.Compared to assembly language, C code written is more reliable and stable. It is fairly efficient. It supports access to I/O and provides ease of management of large embedded projects. Unlike assembly, C has advantage of processor- independence and is not specific to any particular microprocessor/microcontroller or any system

CIRCUIT DIAGRAM

ADVANTAGES

Using a smart door lock system has many of its own advantages :It's secure.simple and easy to accessIt’s pick-proofEntire lock and electronics housing is well constructedWe can use multiple smart locks.

APPLICATION

Control of doors and windows shuttersFaster operation and efficient. Security system This project can be used in Industries, Home, Office, Shops.Can be used for garage doors and gates.By using smart app,disabled or elderly people can control lock as well as appliances anywhere inside house.

FUTURE ENHANCEMENTS

In future there can be a smart phone application enhancement for this project that is, creating a smart phone app to give access to guests when person is away from his/her home The others extensions within the app could also be viewing who is passing through the door by adding the camera and sending stream directly to mobile deviceThis can also extends to, if someone is trying to break in the door, alarm will start beeping on mobile device as well

CONCLUSION

In this project, smart door lock system based on Bluetooth which integrates the home security with home automation..

Home security system for automatic doors provides advance security of today's standard for home owners.

Since our proposed system is built over wireless sensor network, it is a cheap, flexible, and easily installable system without any overhead such as careful planning, cabling, and construction works

THANK U

ALL …..!!