IMPLEMENTATION OF ROUTE ANNOUNCEMENT FOR THE BLIND PPT

IMPLEMENTATION OF ROUTE ANNOUNCEMENT FOR THE BLIND :

IMPLEMENTATION OF ROUTE ANNOUNCEMENT FOR THE BLIND

OUTLINE:

OUTLINE

INTRODUCTION:

INTRODUCTION There are approximately 21.2 million blind or visually impaired people in the INDIA alone. Currently most blind people rely on other people, dogs, and their canes to find their way in buildings. This can be a hassle for both the visually impaired person as well as others. Many disabled people prefer to do things independently rather than rely on others. The Route announcement system for the blind can provide a solution to this problem.

BACKGROUND:

BACKGROUND Current Patents and Existing Technologies : Smart Canes – provider obstacle détection. Sonar vision glasses – also may provide obstacle detection. GPS Techniques-most common technique and provides directions which are reliable and accurate.

OBJECTIVE:

OBJECTIVE The main goal of the project is to provide a cost-effective way to allow buildings to support blind people. The Blind Audio Guidance System hopes to allow visually impaired users to simply press a button, speak the desired destination to the , and be guided there with the use of audio instructions. The system hopes to provide a portable unit that can easily be carried and operated by a visually impaired user.

DESIGN POSSIBILITIES:

DESIGN POSSIBILITIES Many different design possibilities were explored during research. Wireless Sensor Networks – Due to the high amount of sensors required for large buildings, this may be impractical, especially when user direction must be tracked. Programming would be much more complex. RSSI Techniques – This can be effective at finding distances base on signal strength but is also affected by the direction problem. RFID – Seems to provide the most cost effective and simplest way to determine direction using the technique that the team has developed. The programming using this technique would also be less complex but this used for shorter distances.

TEXT FORMAT:

TEXT FORMAT KEYPAD CONSISTING OF SWITCHES 8051 MICRO- CONTROLLER GPS MODULE LCD (LIQUID CRYSTAL DISPAY) GSM MODULE SERVICE CENTRE MOBILE PHONE OF BLIND PERSON TRACKED ROUTE IN THE FORM OF TEXT AUTOMATIC CALL FORWARDING AUDIO FORMAT OUTPUT BLOCK DIAGRAM

PROJECT DESCRIPTION:

PROJECT DESCRIPTION Major Hardware Components: 8051 Microcontroller: GPS GSM RS232 POWER SUPPLY INPUT KEYPAD BUFFER IC 74LS244 MAX232

CIRCUIT DIAGRAM:

CIRCUIT DIAGRAM

SERIAL COMMUNICATION:

SERIAL COMMUNICATION This is the most important component for this project. It helps in communication between microcontroller, GPS and GSM. RS232 is the only serial, asynchronous communication which we use in majority of our projects.

POWERING DEVICE-POWER SUPPLY:

POWERING DEVICE-POWER SUPPLY The only device which is required to power up the entire circuit is power supply. In this project we use a

MICRO CONTROLLER-8051 AT89S52:

MICRO CONTROLLER-8051 AT89S52 This is the component where in all the desired destinations are stored . It’s the 40 pin IC and here port 2 connected to switches and buzzer, port 3 for buffer IC, port 1 to LCD and lastly port 0 to

GPS(GLOBAL POSITIONING SYSTEM):

GPS(GLOBAL POSITIONING SYSTEM ) Global Positioning System is an earth-orbiting-satellite based system that provides signals available anywhere on or above the earth, twenty-four hours a day, which can be used to determine precise time and the position of a GPS receiver in three dimensions. BASIC OPERATION : A GPS receiver calculates its position by carefully timing the signals sent by the constellation of GPS satellites high above the Earth. Each satellite continually transmits messages containing the time the message was sent, a precise orbit for the satellite sending the message (the ephemeris), and the general system health and rough orbits of all GPS satellites.

GPS(GLOBAL POSITIONING SYSTEM):

GPS(GLOBAL POSITIONING SYSTEM ) These signals travel at the speed of light through outer space, and slightly slower through the atmosphere. The receiver uses the arrival time of each message to measure the distance to each satellite, from which it determines the position of the receiver (conceptually the intersection of spheres - see trilateration ) The resulting coordinates are converted to more user-friendly forms such as latitude and longitude, or location on a map, then displayed to the user.

GSM (GLOBAL SYSTEM FOR MOBILE COMMUNICATION):

GSM (GLOBAL SYSTEM FOR MOBILE COMMUNICATION) GSM: GSM (Global System for Mobile communications) is a cellular network, which means that mobile phones connect to it by searching for cells in the immediate vicinity. GSM networks operate in four different frequency ranges. Most GSM networks operate in the 900 MHz or 1800 MHz bands. Frequency band : The frequency range specified for GSM is 1,850 to 1,990 MHz (mobile station to base station). Duplex distance : The duplex distance is 80 MHz. Duplex distance is the distance between the uplink and downlink frequencies. A channel has two frequencies, 80 MHz apart.

GSM (GLOBAL SYSTEM FOR MOBILE COMMUNICATION):

GSM (GLOBAL SYSTEM FOR MOBILE COMMUNICATION) Channel separation: The separation between adjacent carrier frequencies. In GSM, this is 200 kHz. Modulation: Modulation is the process of sending a signal by changing the characteristics of a carrier frequency. This is done in GSM via Gaussian minimum shift keying (GMSK). Transmission rate: GSM is a digital system with an over-the-air bit rate of 270 kbps.

LCD (LIQUID CRYSTAL DISPLAY):

LCD (LIQUID CRYSTAL DISPLAY) WHAT IS LCD? A liquid crystal display (LCD) is a thin, flat display device made up of any number of color or monochrome pixels arrayed in front of a light source or reflector. WHY LCD? A program must interact with the outside world using input and output devices that communicate directly with a human being. One of the most common devices attached to an controller is an LCD display

PROCESS OF PROJECT:

PROCESS OF PROJECT

ADVANTAGES:

ADVANTAGES It is portable (size and power) It helps the blind to be independent. Time wastage is reduced. It helps in better utilization of guidance system for smoother transportation.

APPLICATIONS:

APPLICATIONS The route announcement is not only specified for the blind but also to common human to release him from the trouble of tracking the route and reaching to the destination. It has its application in education field also. It has applications in detecting nuclear explosive objects. It also has its application in military field .

FUTURE SCOPE:

FUTURE SCOPE In blind recognition part, we interested to use GSM AND GPS technology which is very relevant and high efficiency when the blind can control their situation. This system will help blind people to find accurate information of the bus which they should take. So the blind can go to the desire destination. In addition to the more complex technologies such as voice recognition can also be applied aimed to optimize the system. This system will give a best support for the participants to use, especially the blind picture. Using this system we can extend its application in creating an automatic vehicle for blind and help them go out independently ,and this can also be used in the application of detecting of thief or anybody who has entered the room and protect themselves in everyway possible without being dependent .

QUERRIES:

QUERRIES