18-12-2009, 03:53 PM
i need the electronic technologies used in walking stick for the blind pepoles
i need the details about automated text msg read out system in mobile system
18-12-2009, 03:53 PM
i need the electronic technologies used in walking stick for the blind pepoles i need the details about automated text msg read out system in mobile system
19-12-2009, 07:10 PM
Blind since old age have been using walking stick and also walking dogs for their mobility purposes. many different types of electronic travel aid are available: These use either ultrasound or laser beam. One of such devices is the laser cane that is similar to a long cane with built-in laser ranging facilities.Most use ultrasound for functioning.These use the reflectance property of the high frequency ultrasound and are available in different
models like: 1.Sonic torch a hand held device and operates on the principle of transmitting ultrasound in the forward direction and receiving the reflected beam from a nearby object. 2.Mowat sensor It detects object by sending high frequency ultrasound in pulses and receiving the reflected beam from any nearby object.distance of the object can be identified by the rate of vibration produced by the device. 3.Sonic pathfinder a sonic pathfinder is fitted on the head of the user. The audio output from the sonic pathfinder is made up of notes of a musical scale which produce a familiar tonal progression as the user approaches an object,which is then fed to the user through earphones. A novel device The device transmits radio frequency signals having different carrier frequencies. Each path to a certain destination (like main office, library, canteen, toilet) from the user's room, carries a specific radio frequency signal.The information may be square wave pulses that can be used to produce tactile vibration.each path is identified by its carrier. Its parts are: 1.Transmitter Each individual antenna carries a specific radio frequency signal.radio frequency signals are transmitted using different transmitting antennas that start from the user's room to the respective destination. Antenna is a single ended electrical wire that runs from the user's room to the destination. 2. Receiver A small ferrite rod placed at the top of the walking stick will act as the receiving antenna. It maybe AM or FM depending on the type of the transmitter.The frequency tuning circuit tune the receiver at the require carrier frequency. 3. Output devices audio signal that fed to the user through earphoneswhich guide the user from his room to the require destination. detailed seminar report download: electronic walking stick.pdf (Size: 134.55 KB / Downloads: 703)
17-12-2010, 11:54 PM
Electronic stick for Blind
The project aims at designing an electronic walking stick for the blind. The features of the walking stick include: -Obstacles detecting using IR proximity detectors -Wireless design using RF link. -Audio playback on detection of obstacles -to use of microcontroller, hence compact -low cost -low power consumption The The AT89C51 microcontroller is used in this project . It is a CMOS 8-bit microcontroller with 8K bytes of in-system programmable Flash memory. The high density non-volatile technology is used in the design of this microcontroller. This comes with the 80C51 instruction set which is an industry-standard. The signal from decoder is read by the microcontroller and the audio playback unit is activated accordingly. when the obstacles is detected, the Audio playback unit, play the pre-stored audio . The data from microcontroller is sent to the microcontroller which then then encodes it with the locally configured address which is then sent to the RF transmitter in a serial mode. Electronic stick for blind.doc (Size: 43.5 KB / Downloads: 299)
08-12-2012, 01:55 PM
to get information about the topic "ultrasonic and voice based walking stick for blind man " full report ppt and related topic refer the link bellow
http://project-seminars.com/attachment.php?aid=38973 https://seminarproject.net/Thread-walkin...nd-peoples
30-01-2013, 10:11 PM
what is disadvantage of this
because we are planning to do project based on this project
16-02-2013, 01:59 PM
i need ful report, ppts send me aswalmldcalldcacn ksndkanskcnak swcdnkanc cnlnsclnl scnlsaiwlkzsnc ,s .slnc;ML;.D
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