In
today's world, smart home control system is necessary in daily life. As the
technology is emerging a lot it's time for us to be more technical related to
home secure security and easy access to the user. This technique basically
deals with key less door lock system using smart phone in which SMS, E-mail,
Image, anti-burglar will be used and for guest users it will generate b-id.
This will allow the guest user key to access the door for a given particular
time only. The system also includes motion detectors that will help to
determine the user. If an unauthorized person is trying to access the door,
then camera will take snaps of user at the door. These snaps will be sent to
owner. Furthermore, this approach can be applied and extended to different
institutions like banks and offices.
INTRODUCTION
Security describes protection of life and property. There are doors to keep people out, Key chains reinforce the mode of security. Doors are being made of metals not just wood anymore. Influential persons in our society have bullet proof doors to ensure a good measure of security of self and family. The security sector is experiencing diversification as it has never seen before. This has brought about the need to review the reliability of already existing systems and look into the possibility of creating better systems that are smarter and more secure. The micro controller based digital lock presented here is an access control system that allows only authorized persons to access a restricted area, this system is the best suitable for corporate offices, automated machine (ATM s) and home security.
WORKING OF PROJECT
The operation of this project is summarized as follows;
A call is placed to the phone that is connected to the system, this call is like any normal call to a friend, colleague etc. the call made is set to be automatically answered at the other (i.e. door) end, the caller immediately presses six digit numbers (password).
The signal qualities of the tones are first increased by passing it into a step up transformer, the output of which goes to the DTMF decoder.
In the DTMF decoder the tones are received and decoded into a binary code equivalent, the output of the decoder is sent to the micro controller.
The micro controller’s internal programming processes the output from the DTMF decoder. Here, these decoded signals are identified as the key s pressed on the phone keypad. The micro controller output this information into three units:
Liquid crystal display unit, to show the user the digit pressed.
The ULN2003 driver. This converts the logic level from the micro controller’s TTL to the signal that controls the switching sequence of the relay.
On entry of the six-digit code the “#” button of the keypad is pressed as confirmation of the code. If the code entered is correct, (if the user mistakenly typed wrong digit, this can be delete by pressing “0” key to backspace) data is sent to the micro controller to activate door opening sequence; this sequence includes the display of an “Access Granted” text on the LCD screen and the output of a signal to the transistor driving the relay. This signal causes the relay contacts to switch and completes the motor circuit thereby causing the door to open.
The door closes automatically after precisely 8 seconds, but user can close the door by pressing the “#” key on the keypad. The micro controller is programmed to recognized this character and bring about the switching action of another relay which closes the door.
PROJECT SCREENSHOTS
PURCHASE THIS PROJECT
If you purchase this project, you will get full source code of the project
with project presentation, report of the project and synopsis of the project.
You can use your paypal account or your debit/credit card of any bank account.
You will receive your all files with purchase receipt on your mail.
50% DISCOUNT FOR ALL CUSTOMERS
if their is 100% off.
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