08-17-2017, 12:14 AM
microcontroller 8051 based safety guard for blind pdf
Abstract
The Project aims at Providing Assistance for the Blind People against obstructions. The Blind People has to wear the equipment; the equipment transmits IR Communication Code into the Free Space.The reflected IR Communication Code received by the Same Micro-controller. The reflection takes place only any obstruction near by the device.If the code is similar to the transmitted code the obstruction is confirmed & it gives a voice response at the equipment.The equipment is constructed with popular Micro-Controller MCS51 Series, 89C52 & IR Transmitters, Receivers etc. We have implemented bi-directional protocol for IR Transmissions & Receptions via Serial Port available with the Micro-Controller.
This project blind aid safety guard for visually impaired by pic microcontroller, is focusing on the detection of object that is in front of the user within the specific distance range which is depending on the type of distance sensor used. In this project, an infrared (IR) distance sensor is going to be used. The signaling mean of the walking stick is a microcontroller and sound is produced using two buzzers of different frequency which detects obstacles and give the direction of movement to be made.
In our project we are detecting an object/obstacle based on its alert instance from the person using sound alarm from a buzzer will alert the user about the object and the person can avoid the object safely without hitting the object.
blind aid a safety guard for visually impaired by pic microcontroller
The main devices and software s are as follows:
IR Transceiver Sensor
PIC Microcontroller
Buzzer
Proteus Design Suite
MikroC PRO for PIC
IR Transceiver Sensor:
An infrared transceiver, or IR transceiver, is capable of both sending and receiving infrared data. In other words an IR transceiver is a transmitter and a receiver housed together in one single unit and having circuitry in common. IR transceivers are often used for portable or mobile use. Some transceivers can do both functions at the same time, while other transceivers can only do one function at a time. The device may either have a focused beam, thus requiring it to be in a precise position in order to function properly, or it may be a broader beam, depending on the applications that it is designed for.