DESIGN AND CONSTRUCTION OF MICRO-CONTROLLER BASED MULTI-PURPOSE SECURITY SYSTEM WITH DIRECTIONS
ABSTRACT
This project outlines the design and construction of micro-controller based multi-purpose security system with directions which can be used in the military to provide utmost security/safety in the cantonment. This electronic system is designed with four sensors at the input to monitor enemies/ intruders through the sides and rare view and to monitor fire-outbreak within the cantonment respectively. A password operated door is incorporated at the main entrance to monitor unauthorized access into the ammoury of the cantonment. The outputs of these sensors are fed into a signal conditioning circuit that serve as the control logic whose outputs are fed into the port 0 of the 8051 microcontroller that contains a real-time software written in assembly language to simulate the entire hardware. A seven-segment display unit and a buzzer driven by transistors are interfaced at the output port of the 8051 to display the location of the intruder in figure and to alert the security by sounding an alarm respectively. This system offers everything necessary to put an end to security inconveniences as it incorporates an intelligent device, microcontroller.
CHAPTER ONE
INTRODUCTION
1.1 GENERAL DESCRIPTION OF THE PROJECT
The industrial Electronics has changed the whole field ofEngineering and technology is occurring so rapidly, even indeveloping countries. It is so because newer technologies overcome older ones. After the industrial revolution the world directed towards the information age with the development of computers during the 1950’s.
As such, mechantronics which is a principle that combines theapplication of mechanical and electrical means has taken over thegreater part of industrial electronics which is indispensable in modern technology.
In Nigeria, security which is one of the basic lookouts in anyproductive firm has been on the decrease. Most industries have gone bankrupt because of their inability to meet up to the security standard required in a modern day setting. Equally, some homes and offices have lost important documents and properties due to easy access that criminals have. There is thus an urgent need for significant security measures to improve the standard of living of the people, enhance development and put to a stop the menace of insecurity. That is the reason as a student of Electrical/Electronics Engineering I decided to embark on a project named “Microcontroller Based Multipurpose Security Device with Direction”.
This electronic system consists of four sensors made up of opto couplers realized with combination of Laser beam, from Laser diode coupled into a cadmium sulfide photocell (c.d.s photocell).
