Microcontroller Based Multipurpose Security Device With Direction

Project and Seminar Material For Electrical Electronics Engineering EEE

Project and Seminar Material For Electrical Electronics Engineering EEE


This project outlines the design and implementation of microcontroller based multipurpose security device with direction 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 fore-outbreak within the cantonment respectively. A password operated door is incorporated at the main entrance to monitor unauthorized access into the ammunition store of the containment.

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 inconvenience as it incorporated and intelligent device, microcontroller.

Chapter One


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 takes 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 reasons as a student of Electrical/Electronics Engineering has decided to embark on a project named “Microcontroller Based Multipurpose Security Device with Directionโ€.

This electronic system consists of four sensor made up of optocoupler realized with combination of Laser beam, from Laser diode coupled into a cadmium sulfide photocell (c.d.s photocell).

This component serves as electronic eye, the output ofoptocouplems conditioned by a Schmitt trigger NAND gate controlLogic (74 Ls 132) TTL chip. The output of the 132 chips is send intoport 0 of 8051 microcontroller. A keypad encoder containing eightkeys is interfaced to a port 1 of 8051 microcontroller. Anelectromagnetic relay driven by a Darlington pair transistor static switch is interface to the port 2 of the microcontroller. Servomotors that serve as the door prime mover is link to AC Circuit. Via the normally open contact of the electromagnetic relay. A buzzer is also interface to port 2 through a single transistor static switch.

The entire system is designed in such a manner that whenever somebody wants to gain entrance through the back door, the electronic eyes (optocoupler) installed at the locations respective sense the presence and triggers a buzzer alarm at the security department of the cantonment and seven-segment display shows the exact location of the intruder. When the fire detector sense fire-outbreak in the cantonment a pulsate alarm is triggered.

Whenever a user of the ammunition house wants to get access into it, he keys in the exact password and the gate opens and closes in its own. If an invalid password is keyed in, an alarm is triggered at the security department with the exact location of intruder displayed on the seven-segment display unit.

1.2 Objectives Of The Project

The objective of this project is to design and implement a microcontroller based multipurpose security device with direction capable of securing a military cantonment from fire-outbreak, intruder location and detection and to control access to a strong room in the cantonment. Another objective of this project is to ground the graduating student in electronic system design and implementation involving microcontroller. This project is also aimed at acquainting the young engineers with skills for engineering, technical and scientific writing which in very indispensable in their professional practice. Another aim of this project is to familiarize these graduating students with programming involving real-time software (Assembly Language).

1.3 The Project Significance Lot In The Electrical,Electronic, And Computer Engineering

The project construction work is used in a number of places like in a military cantonment to provide security against enemies, fire-outbreak and unauthorized access into their strong room, bank strong room doors to avoid intruders, Another vital application of this project in office doors, and in model buildings. Also thisproject is for security surveillance in combination with closed circuit television (CCT). The project of this nature can also be used in JAMB and WAEC strong room doors.

1.4 The Project Report Organization

The realization of this project is presented in chapters for clarity purpose. Chapter one contains a brief introduction to the project. Chapter two is titled as the literature review, while chapter three is the system design. Chapter four exposes the Implementation and mode of construction, chapter five is testing and integration. Chapter six is all about problems encountered, recommendation and conclusion.

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