A permitted project "Smart blind cover using ultrasonic distance measurement sensor system" approved by Asaduzzaman pappu, ID Md.Abdul Wahad, Batch ID: 17, EEE program of Daffodil International University, under my guidance. This work has been permitted by them in the House in partial calm of supplies for the degree of Bachelor of Science in Electrical and Electronics Engineering was available to the viewers of the December 2018 Examination Group and has been rated as suitable. Next, we would take this opportunity to fast our gratitude and appreciation to our project supervisor, Mr. Saikat Basak, Senior Lecturer, Department of EEE, Faculty of Engineering, Daffodil International University, for being eager to to support, motivate and supervise us through this. the project.
Mahmudur Rahman, Assistant Professor, Department of Electrical and Electronics Engineering, Faculty of Engineering, Daffodil International University, for his help, support and continuous assurance. In this work, a modest, low-cost, user-friendly, smart blind control system is intended and understood to fulfill the actions of calm blind and visually impaired people in the area of concern. A smart blind cap that uses an ultrasonic silence length detection system that helps the blind person steer firmly by himself and avoid any problems that could be hostility, whether it is positioned to prevent any likely opportunity.
The microcontroller is then used to control the manner and distance of the blind cases. We also use a shaking motor that shakes when the blind gets very close to the problem.
LIST OF TABLES
INTRODUCTION
Introduction
Objectives
The main objective of this project is to design and implement a smart blind hood using ultrasonic ranging sensors to calculate the distance from the distance from the device. The signal comes from the receiver to the transmitter and increases the speed of the crystal clock. The microcontroller controls the signal in a specific distance of 100 cm, 50 cm and other functionality of 30 cm compressor motor.
Scope of work
This project is divided into three phases, where the first section will be held in the 9th semester and the second and third phases will be completed in this semester. In the first phase, this project is underway by discussing with supervisors concepts that will be used throughout this project. Then the review of the literature was investigated along with the background of this project and by doing research referring to various sources such as reference books, non-government books, online and relevant data sheets.
With the search result, the most suitable parts will be selected and used in this project development. Next, the type of programming language is studied and the most suitable programming language will be selected as the programming codes for the system.
Project Outline
LITERATURE REVIEWS
Study programs have also been made on computer software C used for simulation, so that the project can be simulated before continuing on the hardware. Also discuss about the circuit diagram the working process of this circuit and the list of mechanisms in this circuit. It involves an ultrasonic sensor with an unconventional mass vibration motor that vibrates distinctly for the ground obstacle and the low suspension obstacle.
A wireless ultrasonic calling system notices problems using ultrasonic sensors and the PIC16F72 microcontroller discovers how chilly this problem is. The project is then monitored in search of the information connected to components such as sensors and microcontrollers. With the result of the search, the most suitable components will be selected and used in the development of this project.
After that, the type of programming language is conscious and the most appropriate programming language will be selected as programming codes for the system. Also software programming C software used for simulation is done so that the project can be simulated before proceeding with hardware.
General Block Diagram
The intelligent guide cover detects obstacles with ultrasonic sensors, but cannot know whether the obstacle is moving or not.
Block Diagram Description
Circuit Diagram
Working Process of Circuit
List of Components used in Circuit
Conclusion
Measuring the ultrasonic distance measuring sensor which is used in many applications because of its properties as a blind person for their walking back here is the led light that turns on or off automatically also helps the blind person at night. It can measure the distance of 100cm then the first alarm will be given also it measures 70cm then the second alarm will be given. Finally, when the distance of 30 cm between the blind person and the vibration of the obstacle will be the signal, the cost involved in the development of the system is significantly lower and is much less than the market cost available in the market.
ANALYSIS OF COMPONENTS
Microcontroller chip PIC16F72
The microcontroller has clocks like kop ram rom port and a normal computer but it is designed to run only a signal system much smaller and basic. A microcontroller is different from a microprocessor, which is a chip used to create a multifunction computer or device and needs several chips to handle disparate inputs. The major advantage of the microcontrollers is to keep at least the cost of counting and design cost of the item controlled than using larger microprocessors.
They are classically designed with CMOS technology, a more efficient manufacturing technique that uses less and less powerful current. Many architectures are also used, but the primary architecture is CISC, and the microcontroller allows many control instructions for multi-control machine instructions, some use the RISC architecture, which implements fewer instructions, but uses less power and lightness. Microcontrollers place all the essential ingredients in a single chip because it is controlled by a single function, some complex devices have a microprocessor.
They have become commonplace microcontrollers in many fields and can be found in household appliances, computer equipment, and tools. They are often used in automobiles and have many industrial uses and have become a major part of the robotics industry. Because they are used to control a single process and execute simple instructions, microcontrollers do not require significant process power.
Ultrasonic sensor
Buzzer
Crystal
They are used in smartphones and desktop computers 4 by determining the table clock frequency.
Voltage Regulator
For this project 5v dc voltage regulator that changes 12v dc current from battery to 5v dc current. There are mainly two types of voltage regulators, linear voltage regulator and switching voltage regulator, these are used in larger applications. Linear voltage regulator is the simplest type of voltage regulators, it is available in two types which are compact and used in low voltage and low voltage system principle.
If the voltage is closed to 7.5v then it does not produce heat and therefore does not need a heatsink. If the voltage input is higher, a voltage regulator is a device with a simple preliminary design and uses negative feedback control circuitry. It is available in two types, which are compact and used in low voltage and low voltage systems, so excess energy is emitted as heat from the 7805.
It controls the stable output of 5v if the input voltage is between 7.5v and 12v.
Capacitor
220uF/16v electrolytic capacitor is a passive electrical component of two terminals in an electric field for storing electric energy field for storing electric energy.
Step Down Transformer
A transformer is an electrical device that can charge the voltage of an electric current. Generally, we use 220V 50Hz AC power supply, but this power needs to be changed as needed to provide the required values or supply voltage with different types of power supply.
Vibrate Motor
Resistance
Ultrasonic Module
Ultrasound sensor
PF Capacitor
Transistor
Limitations of the Circuit
HARDWARE ANALYSIS
Flow Chart Diagram
Pin Configuration
PIC16F72
Component view of product
PIC16F72 BLOCK DIAGRAM
If the signal returns, the output of the ECHO sensor will be HIGH (5V) for a period of time required to send and receive the ultrasound burst. The pulse width is between 100 cm and 70 cm, and if there is no obstruction, it will echo. The microcontroller controls the signal distance 100 cm, 50 cm and 30 cm vibration motor in another work process.
PCB Layout
To design, the basic purpose of our project is to connect the circuit ultrasonic sensors to the blind circuit of the circuit system.
RESULT AND DISCUSSUION
He investigated our system of applications using the vibration models to verify how this system can make blind people recognize.
Testing of Project
Display Test
Buzzer Test
LED Test
Result
Sensor Test
Advantages
Disadvantages
CONCLUSION
This paper describes the system of search and system which provides great help and support to the blind. With the proposed architecture, if build with greater precision blind people and move from one place to another without the help of others. If such a system is developed, it will serve as a basic platform to generate more such units for the view of the wounded, which will be more cost-effective.
Effective cost is one of the important factors of this project, it is very suitable for developing countries. In the market today is not available in the market, but in the future, adding additional features of the auxiliary movement with simple and low-cost technology will definitely help to capture a large market in developing countries.
Limitation of the Study
Future Works
But reducing costs leads to performance obligations, it is recommended to improve the design compared to commercial production.
Hans du Buf, "The Smart Vision Local Navigation Aid for Blind and Visually Impaired Persons", International Journal of Digital Content Technology and its applications, Vol.5, no.5, May 2011. 5] Intelligent Guide-Cap for the Blind" , Proceedings of the 2001 IEEE 2001 International Conference on Robotics 8, Automation, Seoul, Korea. Tahat, “Wireless ranging system for the blind using a smartphone”, School of Electrical Engineering Princess Sumaya University of Technology Amman, Jordan.
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