This project titled “IOT Based Smart Wand for the Blind to Help the Blind” submitted by *Md. We hereby declare that we have carried out this project by ourselves under the supervision of Ms. Nasrin Akter, a lecturer at the Faculty of Science and Information Technology, that we have succeeded in completing this project.
We came up with the idea of offering them a smart cane for the blind that would help them identify obstacles and walk safely. In this paper, we have introduced a cost-effective and useful smart curtain rod that will help them recognize various obstacles and ensure smooth walking. The smart roller stick is based on an ultrasonic sensor and ESP-32 for visually impaired people.
LIST OF TABLES
LIST OF ABBRIBATION
Introduction
- Introduction
- Problem Definition
- Problem Identification
- Counter Measures
- Problem Statement
- Objectives
- Scopes and Limitation
- Methodology
People who do not have access to glasses or contact lenses are also considered visually impaired. Uncorrected refractive errors (43 percent), cataracts (33 percent) and glaucoma are some of the most common causes of vision impairment worldwide (2 percent). Although we encountered several challenges in helping people with visual impairments, we have a cost-efficient yet effective smart solution.
All this hardware will come together to create a Smart Blind Stick which will help visually impaired people in a cost effective and better way. Although the Smart Stick answers in the affirmative to help the visually impaired, it also has some negative issues. The main objective is to help the visually impaired to roam around easily using this technology.
If the user of the stick forgets where he kept the stick, he can press a button on the remote control and find the stick by hearing the sound of the buzzer. A number of future extensions are available that can be used with the smart walking stick, for example the use of the Global Positioning System can assist the visually impaired individual with sourcing target trajectory data. The ultrasonic sensor's Vcc is connected to 3.3V power supply, the sensor's Echo pin is connected to pin number 33 of the ESP-32 to receive the signal sent from the trig pin of the ultrasonic sensor.
Trigger pin of the ultrasonic sensor is associated with pin number 32 of ESP-32 and the ground pin of the sensor is associated with GND of ESP-32. Clear sky view is mandatory for the GPS module to lock on available satellites and keep updating the current location of the user. If the user forgets where he stored the stick, he will press the a button of the remote control, a buzzer will start beeping in a specific pattern and the user will start looking for the stick in the room or somewhere outside.
In this section we talk about the end, the obstacle of the project and the future work of the enterprise.
LITERATURE REVIEWS
Related Works and Existing System
Ultrasonic sensors must be able to detect and maintain a critical distance from any obstacles or items that may be in the way of the customer's line of sight. It is at this point that the controller must decide on the rules to be applied, such as turning right or left. As an analogy, this enhancement has a control button on the handle that has four distinct arrows on it.
Due to the fact that it only recognizes zones marked with an RFID tag, this innovation essentially functions as a regular externally disabled stick. Also, this enhancement necessitates a staggering price tag if used outside due to the large area to be marked and the staggering price. A massive amount of research and study is done to create a fine instrument that gives the customer a unique foundation for their feet.
The history is relived by a camera connected to the client's host, and the bars are made by a maui-caleb enlightened, and naturally and normally driven, great core interests in the client. In addition to the current white tin, Brilliance is a sign that can recognize low-hanging shelter, such as the trunks of trees. The phone connected to the microcontroller understands the data and sends it to the Bluetooth earphone to alert the customer about the situation at hand.
Felt by the customer's hand, the spatio-temporal vibration arrangement creates the atmosphere of a distinct improvement in case there should be an incident of a moving check. The work of Larisa Dunai and Guillermo Peris Fajarnes offers an alternative strategy. Through the transmission of auditory signals, the structure offers a three-dimensional experience to the customer. There are a wide variety of products on the market, as well as a few that have been developed later.
Because of this problem, they are no longer relevant to the film community, let alone the poor and other people living in more remote areas.
Summary of the chapter
DESCRIPTION OF COMPONENTS
- Introduction
- ESP-32 Boards
- Purpose of ESP-32 Boards
- Different Types of ESP 32 Boards
- Esp-32 DOIT Devkit V1
- Ultrasonic Sensor Pin Configuration
- Working Principal of Ultrasonic Sensors
- Use of ultrasonic sensor
- GPS Module
- Examples
- Buzzer
- Applications for Buzzers Typical uses of buzzers include
- Working Principle of Led
- Switch
- Jumper Wires
- Summary of the chapter
The Esp-32 is an open-source physics determination stage subject to a basic I/O board and an enhancement circumstance that executes Processing. The Esp-32 can be used to make stand-alone devices or can be controlled by programming. There are 30 digital input/output pins and 16 pins can be used as analog input PWM outputs, a USB connection, 1 boot and 1 reset switch.
An ultrasonic sensor is a device that uses ultrasonic sound waves to estimate the distance to a body. This pin goes high for a period of time which will be identical to the time taken. Ultrasonics are used so often that they can be run continuously in grain bin discrimination applications, water level recognition, motion applications, and vehicle identification at your neighborhood restaurant or bank.
NMEA is the National Marine Electronics Association and is a standard text protocol commonly used by many GPS modules. A buzzer is an audible signaling instrument that may be mechanical, electromechanical, magnetic, electromagnetic, electroacoustic or piezoelectric. A piezoelectric buzzer can be controlled by an oscillating circuit or other audio signal source.
We carry a range of the most common variants at Future Electronics, sorted by type, sound level, frequency, nominal voltage, dimension and packaging type. A specific amount of voltage must be applied to the wires, then electrons will be able to recombine with electron dumps in the device and release energy in the form of photons. This effect is called electroluminescence, and the color of the light is determined by the semiconductor's energy band gap.
It is a commonly used physical circuit component that regulates the flow of signals over a circuit's path. A switch enables the opening or closing of a connection in the circuit in which it is installed. A jumper wire is an electrical wire, or a group of them in a cable, with either a connector or a pin at each end, used to connect breadboard or other prototype or test circuit components without soldering. Each jumper wire's "varnish connector" is connected to the breadboard's header connector by inserting their heads into the breadboard's slots.
ANALYSIS AND SIMULATION
- Block diagram of the project
- Flowchart
- Device Design
- Summary of the chapter
However, if the structure detects that there is no obstruction, the buzzer will not sound. Thus, there will be no inconvenience when crossing the street or walking up the stairs for an externally impaired individual. Lab center Electronics created Proteus as a tool for simulation and design of electrical and electronic circuits.
It includes ISIS, which can be used for circuit modeling and manufacturing, as well as ARES, which is used for circuit boards. Probes for real-time monitoring of circuit parameters, switches, displays, loads such as motors and lamps, discrete components such as resistors, capacitors, inductors, transformers, digital and analog integrated circuits, semiconductor switches, relays, microcontrollers, processors, sensors, and so on. It is embedded with footprints of various categories of components like ICs, transistors, headers, connectors and other discrete components.
After setting up the circuit, the relevant components can be emulated using the library's knowledge. We use this software because it is easier to design and model circuits than with other tools. ESP 32, an ultrasonic sensor, a buzzer, a red LED, a blue LED, a green LED, a pot-hg and a virtual terminal are all used in the design and implementation of the circuit.
This section shows a smart walking stick for individuals with external disabilities with a square chart and a flowchart.
RESULT AND DISCUSSION
- Result
- Discussion of Result
- Cost Analysis
- Cost Comparison
- Summary of the chapter
- CONCLUSIONS
- Conclusion
- Limitation of the Study
- Future Works
- Summary of the chapter
The ultrasonic sensor has been fully utilized to improve the movement choice of blind or partially sighted people in a comfortable and autonomous way. The aim of the “smart blind stick for the blind” project is to provide cheap smart assistance to the blind. Before creating the smart blindstick project, we justified the local market price of the project equipment.
Basically, our smart stick designed for visually impaired people is operated and the total cost is 1850 Taka. With the adjusted design, whenever it is built with the greatest precision, visually impaired individuals can move starting from one and then to another without other assistance and our model guarantees one thing that makes an individual's movement assignment with simple and pleasant visual impairment. This can also be seen as an essential method for the sense of liberal vision for the visually impaired.
The user can find the stick by pressing a button in the remote control through the sound of the buzzer. Dey, "Ultrasonic Sensor Based Smart Blind Stick International Conference on Current Trends to Converging Technologies (ICCTCT), 2018, p. Karuna, "Smart Walking Stick for Blind Integrated with SOS Navigation System nd International Conference on Trends in Electronics and Informatics (ICOEI) , 2018, p.
Kavitha, “An electronic walking stick for the blind”, International Conference on Information Communications and Embedded Systems (ICICES pp. Anandkumar, “Autonomous walking stick for the blind using echolocation and image processing and International Conference on Contemporary Computing and Informatics (IC3I), 2016, pp. Gupta, “Smart Stick for the Blind and Visually Impaired Second International Conference on Inventive Communication and Computing Technologies (ICICCT), 2018, pp.
Aravinth, “WiFi and Bluetooth smart stick for guiding blind people rd International Conference on Intelligent Sustainable Systems (ICISS), 2020, p.
