DESIGN AND IMPLEMENT A RADIO CONTROLLED CAR LOCK WITH 5-MIN
ABSTRACT:
This project deals with the design and implementation of a radio controlled car lock with 5-minutes ignition deactivation facility capable of locking a vehicle using a remote control from a distance. The system is designed in two functional units; the transmitter which is an RF handheld remote control, and the receiver units. The receiver unit is realized in several modules. A tuned radio frequency receiver (TRF) output is used to trigger a bistable multivibrator configured using CD 4013 whose output is used to trigger the car lock switch. The four doors of a conventional car are represented using four push and hold switches wired to trigger a 5-min delay circuit realized with Ne555 timer in monostable mode. The system works in such a way that if your car is snatched at gunpoint, you simply press the remote and the car locks by switching off a green LED before the armed robber zoom off. And once any of the doors is opened and closed, the vehicle automatically comes to a stop after five minutes. And the ignition lamp goes off too. The system also contains a reset switch installed at a recessed location in the car for resetting the locking system when the car is found. Due mainly because of the area of application, the system is chordless.
CHAPTER ONE
RADIO CONTROLLED CAR LOCK SYSTEM OVERVIEW
1.1.  Background of the Study
The present innovations relate generally to wireless transmitters and more particularly to remotely controlled operations which employ RF transmitters and Receivers. With the invention of GPRS, GPS, 3G, 4G, GSM and the internet people in different parts of the world can communicate and control some operation effectively. Putting into consideration the above milestone, there is vital need to incapacitate car thieves using a wireless technology. Because of this, a thorough research was embarked on Remote control car lock with 5-minutes ignition deactivation facilities. This system prevents car snatchers from disappearing with the vehicle. It frustrate them five minutes after closing of any of the car doors. It arrests the issue of car snatching and deactivation in real time, without any delay.  It is made up of a portable handheld RF remote control which should always be in the driver’s pocket. And the receiver is installed inside the vehicle.
1.2.           Problem Statement
Owing to the high rate of unemployment in the country social vices have been on the increase. This menace has called for individual security of lives and properties. All over the world, car lifting is a threatening social vice people have lost their vehicles, worth of billions of dollar, to car thieves and sometimes their lives. These is utmost need to come-up with a means of tracking car thieves by demobilizing the vehicle irrespective of their location using wireless technology regarding the harms that have been caused by car lifting/ thieves, I deemed it necessary to embark on the project design and implementation of a radio controlled car lock with 5 minutes ignition deactivation facilities. This system should be able to lock the vehicles ignition system and deactivated it/brings the car to a stop, 5-minustes after closing and of the doors. This device should use a radio frequency (Rf) technology.
1.3.           Aims and Objectives of the Study
