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Stream/Area:
-
Subject:
-
Paper ID:
IJSREM18601
Volume:
7 |
4 |
Apr 2023
Pages:
1-6
Publication Frequency:
Monthly (12 issues per year)
License:International Journal of Scientific Research in Engineering and Management follows the Creative Commons Attribution 4.0 (CC BY 4.0) License, allowing free use and distribution with proper attribution.
Department of Electrical and Electronics Engineering,
Ballari Institute of Technology and Management, Ballari, Karnataka, India
Department of Electrical and Electronics Engineering,
Ballari Institute of Technology and Management, Ballari, Karnataka, India
Department of Electrical and Electronics Engineering,
Ballari Institute of Technology and Management, Ballari, Karnataka, India
Department of Electrical and Electronics Engineering,
Ballari Institute of Technology and Management, Ballari, Karnataka, India
Wheelchairs are important mobility aids for people with lower-limb disabilities; however, conventional manual wheelchairs require considerable physical effort and motorized smart wheelchairs are often expensive. This paper presents the design and fabrication of a low-cost smart wheelchair based on voice control, Bluetooth communication, ultrasonic obstacle detection, and GSM-based emergency notification. The proposed system uses an Android mobile phone as the user interface, an HC-05 Bluetooth module for wireless communication, an Arduino microcontroller for command processing, and an L298 motor driver for controlling the DC motors. Voice commands received from the mobile application are interpreted by the controller to produce forward, reverse, left, and right movements. An ultrasonic sensor continuously monitors the region in front of the wheelchair and stops the wheelchair when an obstacle is detected. An emergency switch is also incorporated to activate the GSM module and send an alert message to a predefined contact. The fabricated prototype successfully demonstrated voice-controlled movement, obstacle detection, and emergency-alert functionality. The report indicates a voice-command recognition performance of more than 95% under proper vocalization, with an overall reported project cost of approximately ₹10,000 including the wheelchair.
KEYWORDS
This paper presented the design and fabrication of a smart wheelchair integrating voice-based wireless control, Arduino-based processing, DC motor actuation, ultrasonic obstacle detection, and GSM emergency communication. The prototype provides four-direction movement through commands transmitted from an Android mobile phone via Bluetooth. The ultrasonic sensor provides an automatic stopping mechanism when an obstacle is detected, while the emergency switch provides a means of requesting immediate assistance. The experimental outcome reported in the project demonstrates successful implementation of the major functions. The voice-control system recognized most commands with a reported accuracy exceeding 95% under proper vocalization, and the total reported project cost was approximately ₹10,000 including the wheelchair. The system therefore demonstrates the feasibility of developing a comparatively economical smart mobility aid. Further improvements in feedback control, IoT connectivity, indoor navigation, health monitoring, solar charging, and advanced mobility mechanisms can enhance the system's reliability and functionality.
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Publication Date
4/25/2023
Peer Review Type
Double-Blind Peer Review
Review Rounds: 2
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The authors declare no conflict of interest related to this research work.
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