One of the most popular pieces of assistive
technology used by people with mobility issues to move
around on their own or with carer support and
enhance their quality of life is a wheelchair. A wired
wearable assistive device called the tongue controlled
wheelchair allows the patients with severe impairments
to steer their wheelchairs by using their tongue motion.
This study describes the use of tongue movements to
control a moving wheel chair. The tongue drive system is
an Assistive Technology()AT tongue-operated device
designed for persons with severe disabilities to manage
their surroundings. This technology employs an array of
Hall Effect magnetic sensors positioned on a mouthpiece
connected to the helmet, as well as a tiny permanent
magnet implanted on the tongue. The magnetic field
created by the tiny permanent magnet is sensed using
these Hall Effect sensors. The detected signals are
transferred via wireless connection and processed by a
microprocessor to control the wheelchairs movement.
Many assistive devices were developed in the early days,
and each design had significant drawbacks. This study
provides an efficient, low-cost solution to all of the flaws
found in priordesigns.
Keywords : TDS - Tongue Drive System , AT - Assisstive Technology