Tetraplegic Wheelchair

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The Tetraplegics Wheelchair is a wheelchair that aims to provide low-cost and self-reliant locomotory assistance for people with movement disabilities. The wheelchair detects muscle movements through biosensors and the signals instruct it to move in a particular direction. Muscle movements generate muscle potential, which is detected by bio-compatible surface sensors. These signals are then sent to the microcontroller, which instructs the wheelchair to move.

While tetraplegic people cannot move their upper and lower limbs, they can move their shoulders. Each muscle potential develops a specific pattern on electromyography (EMG). Based on the pattern, the muscle and moves in the respective direction and the wheelchair moves forward or backward. Similarly, the right and left shoulders move the wheelchair left and right. The wheelchair is also fitted with ultrasound sensors that detect obstacles and stops 1 meter ahead of an obstacle and has vision sensors that will detect people behind. The wheelchair can also be remotely controlled. The designers have developed an Android application, which can control the wheelchair through Bluetooth, with the prototype having a range of 100 meters.

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Tetraplegic Wheelchair

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