DC MOTOR SPEED CONTROL USING MOBILE PHONE
ABSTRACT The DC motor speed control system using mobile phone is a device used for controlling the speed of a DC motor. It is powered electrically to vary the speed of a DC motor. This project makes use of dial tone multi frequency (DTMF) decoder after being powered to pick the key pad tones from the GSM phone, encode the tone in binary code to the programmed microcontroller which decodes the binary code and executes the speed control of the DC motor. The speed of the motor depends on the num...
Design and Construction of Enhanced Security Door
ABSTRACT Security is one thing human should not joke with, especially in today’s world where crime is at a higher rate. One of the ways of providing security is the introduction of security doors in houses, companies, offices and warehouses. Security doors may prevent or control entry or exit, or they may be merely decorative. Larger doors can be used for a whole building, such as a castle or fortified town, or the actual doors that block entry through the gatehouse. Today many doors are ...
Construction of Digital Fuel Level Indicator
ABSTRACT Today in this digitalized world, if the fuel indicator in the automobiles is also made digital it will help to know the exact amount of fuel available in the fuel tank. The above furnished fact is considered in our project and we found out a proper solution for indicating the accurate availability of fuel in the tank digitally. An ultrasonic transmitter and receiver is used to find out the fuel level which is economic and also accurate. The added Feature in this ...
Design and Construction of Automatic College Bell with Announcement System
This device takes over the task of Ringing of the Bell in Colleges. It replaces the Manual Switching of the Bell in the College. It has an Inbuilt Real Time Clock (DS1307 /DS 12c887) which tracks over the Real Time. When this time equals to the Bell Ringing time, then the Relay for the Bell is switched on. The Bell Ringing time can be edited at any Time, so that it can be used at Normal Class Timings as well as Exam Times. The Real Time Clock is displayed on LCDt display. The Microcontroller ...
Intelligent Emergency Light for the Security Lighting of an Industrial Layout
ABSTRACT Artificial intelligence is the study of computer or microcontrollers ability to perform task which is currently done by human. For instance, when there is an outage of a certain power supply in a particular illuminating lighting device. In that case intelligence emergency light is an electronic circuit that controls automatically the security lighting of an industrial layout according to the ambient level of lighting. In the field of security, security lighting is often used as a pre...
Overview of Digitally Controlled Light Dimmer
ABSTRACT A digitally controlled light dimmer circuit is based on the principle of power control using thyristor. The switch enables light from an electric bulb to be raised from full brilliance down or up to a high range of luminance. Owning to its construction, adequate conservation of energy is achieved. The circuit is made in various patterns depending on the manufacturer. Some have a rotary knob; some have milled edged control while others have a depressing switch or side...
Low Cost DC Motor Speed Control System Using Microcontroller Logic Pulse-Width Modulation (PWM) Controller
ABSTRACT This seminar focuses on a low cost DC motor speed control system using a microcontroller logic pulse-width modulation [pwm] controller to control brushless DC Motor. In a digital controller of brushless DC Motor, the control accuracy is of a high level, and it has a fast response time. Here a microcontroller of 8-bit type (80CL580) will be used as the systems core controller in other to acquire an accurate logic control algorithm. The DC motor speed control has found vast application...
Comparative Studies of Needle Free Injection Systems and Hypodermic Needle Injection: A Global Perspective
Needle-free injection (NFI) is a novel transdermal either intramuscularly or subcutaneously drug delivery system, where innovative ways to introduce a variety of medicines like as antibiotics, iron, or vaccines comfortably, accurately, easily and rapidly without, piercing the skin compared to traditional needle. While hypodermic needle is inject substances into body by intradermal, intramuscular, subcutaneous, intravenous, etc or extract fluids from the body body, for example taking blood fro...
The Official Handbook of the Legion of Mary
Contents Page ABBREVIATIONS OF BOOKS OF THE BIBLE ....... 3 ABBREVIATIONS OF DOCUMENTS OF THE MAGISTERIUM .... 4 POPE JOHN PAUL II TO THE LEGION OF MARY ...... 5 PRELIMINARY NOTE.............. 7 PROFILE OF FRANK DUFF .......... 8 PHOTOGRAPHS: FRANK DUFF ....... facing page 8 LEGION ALTAR ...... facing page 108 VEXILLA ........ facing page 140 CHAPTER 1. Name and Origin ............ 9 2. Object . . . . . . . . . . . . . . . . 11 3. Spirit of the Legion . . . . . . . . . . . . 12 4. Legionary s...
Design and Implementation of a Mechanical Ventilator
Africa’s healthcare system is challenged by inadequate medical equipment, stemming from the fact that it does not manufacture its own medical devices but depends mostly on used medical equipment donations, many of which do not function and require extensive repairs. The World Health Organization estimates that 50 to 80 percent of medical equipment in developing countries are not working, therefore creating a barrier in the health system delivery of health services. Mechanical ventilators ...
A PHASE FAULT DETECTOR FOR POWER TRANSFORMER
ABSTRACT A power transformer is a very simple device. It is a vital link in the electronic distribution system. A power transformer is associated with faults. The design and construction of the phase fault detector is to provide simple, reliable and comprehensive electrical phase fault detections and response system. The system includes means for detecting any of the various electrical faults, such as impermissible low voltage levels, impermissible high ...
2.5KVA AUTOMATIC VOLTAGE REGULATOR (AVR)
ABSTRACT The AVR is an automatic voltage regulator and it is a device which is used to regulate or stabilize electrical power supply for electrical or electronic appliances. Inthisprojecttherefore,weareinterestedintheconstructionof this allimportantdevice.Furthermore we shalldiscuses the techniques,processes,switching stages and then the working principleoftheautomaticvoltageregulator Chapteroneofthisprojectdwellsontheintroductionofthe projecttopic.Italsotalksabouttheobjectivesoftheproject,br...
Comparative analysis of internet performance over 3 sites with and without VPN
ABSTRACT Nowadays, there is an increase in the demand to connect to the internal networks of organizations by their branches from distant locations. Members of such organizations often need to access internal networks from their homes, hotels or other far away business places and external networks over the internet which is insecure by virtue of its public nature. The security of information transferred in the network becomes a major challenge when staff or partners in business access in...
CLAP-ON CLAP-OFF SWITCH
Contents TITLE PAGEi CERTIFICATION AND APPROVALii DEDICATIONiii ACKNOWLEDGEMENTiv ABSTRACTv TABLE OF CONTENTSvi LIST OF FIGURES viii CHAPTER ONE1 INTRODUCTION1 1.1: PROBLEM STATEMENT1 1.2: THE AIM AND OBJECTIVE OF THE CLAP ON-CLAP OFF SWICHT2 1.3: JUSTIFICATION OF THE RESEARCH2 1.4: LITERATURE REVIEW2 CHAPTER TWO5 THEORY AND PICTORIAL ANALYSIS5 2.1: THEORITICAL ANALYSIS5 2.2: BLOCK DIAGRAM DESCRIPTION 6 2.3: IMPLEMENTED COMPONENTS6 2.31: CONDENSER MICROPHON...