TELKOMNIKA Telecommunication, Computing, Electronics and Control
Light follower systems for visually impaired using visible light communication

TELKOMNIKA Telecommunication, Computing, Electronics and Control
Light follower systems for visually impaired using visible light communication

Color filters
Indoor
Mobility
Orientation
Pathway

Visual impairment is the condition of someone who has a disorder or an
obstacle in their vision. In this research, the implementation of light follower
systems for visually impaired using visible light is proposed. This system can
enable visually impaired people to determine orientation and support mobility,
especially in an indoor situation, using visible light. The prototype of the
visually impaired pathway was made as visible light communication (VLC)
transmitter consisting of a 12 V power supply, light emitting diode (LED),
MPEG-1 Layer-3 (MP3), and band pass filter (BPF) filter circuit. The VLC
receiver is made a prototype of a blind stick consisting of a photodiode,
amplifier, buzzer, timer, and 9 V battery. The measurement of this system uses
acrylic and color filters with system accuracy taking into account the angle and
conditions when the fluorescent lights are turned on and off. This result
showed the system could transmit audio signals at a frequency of 3000 Hz.
Furthermore, the comparison results showed that the quality of measurements
without using a filter is better than using a filter. The output voltage value
without using a filter with an angle of 700 degree is 7.19 Vp-p, meanwhile
using a filter with an angle of 700 degree is 6.48 Vp-p.

Arsyad Ramadhan Darlis, Lucia Jambola, Tedi Hadyansyah

http://journal.uad.ac.id/index.php/TELKOMNIKA

Aug 30, 2020

peri irawan

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