Development of a Low-cost Electronic Wheelchair With Obstacle Avoidance Feature  

Oleh:

Arboleda, Edwin Romeroso ; Tumambing, Mary Christine ; Alegre ; Idica, Kathleen Felix

Jenis: Article from Journal - ilmiah nasional - terakreditasi DIKTI
Dalam koleksi: Journal of Mechatronics, Electrical Power, and Vehicular Technology vol. 6 no. 2 (Dec. 2015), page 89-96.
Topik: electronic wheelchair; obstacle avoidance; edge detection; Gizduino AtMega328; microcontroller.
Fulltext: 229-1544-3-PB.pdf (481.58KB)

Isi artikel

A low-cost electronic wheelchair was designed and developed which can perform the similar functions and features as a commercially available wheelchair. It also provides obstacle avoidance capability as added value. The electronic wheelchair was realized by modification of a lightweight manual wheelchair. It uses two electric motors each of 320 W 24 V DC, 5-24 VDC 6 A H-bridge drivers, and a 12 V 17 Ah rechargeable lead acid battery. It equipped with switches, joystick, infrared sensors and ultrasonic sensors. A Gizduino AtMega328 microcontroller is used to read and interpret commands. User’s acceptance evaluation results show that the developed low-cost wheelchair is able to receive and interpret commands provided by the joystick, detect if a person is seated on it, navigate to avoid obstacles as well as to detect edge and stairs. Technical evaluation result shows that on a flat surface it could move at the speed of around 39.9 m/min without load and 32 m/min with 80 kg load. At 10 degrees inclined surface, the maximum weight limit is 30 kg with the speed of 12 m/min. At 20 degrees inclined surface, the maximum weight limit is 10 kg with the speed of 3 m/min. Regarding cost, it is just a fraction of a cost compared to the commercially available model. Therefore, the developed wheelchair offers an option for potential users who cannot afford to buy the commercially available one.

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