New speech processor and ultrasonic sensors based embedded system to improve the control of a motorised wheelchair

Fezari, Mohamed; Khati, A.

doi:10.1109/idt.2008.4802527

Cited by 6 publications

(1 citation statement)

References 10 publications

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“…In 2008, Fezari M., et al, designed a system based on grouping a microcontroller with a voice recognition processor for isolated word and speaker dependent and a set of ultrasonic modules. The input of the system are a set of eight Arabic words used to control the movement of the wheelchair, a vector of information on the context given by a set of sensors and a joystick for security actions [6]. In 2009, Murai A., et al, presented a wheelchair with a high voice delay leading to wall collisions.…”

Section: Related Workmentioning

confidence: 99%

Design of Voice Controlled Smart Wheelchair

Abed¹

2015

IJCA

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This paper describes the design of a smart, motorized, voice controlled wheelchair using embedded system. Proposed design supports voice activation system for physically disabled persons incorporating manual operation. Arduino microcontroller and speaker dependent voice recognition processor have been used to support the navigation of the wheel chair. The direction and velocity of the chair are controlled by pre-defined Arabic voice commands. The speaker dependent, isolated word recognition system (IWRS) for a definite utterance of Arabic words to suit the patient's requirements has been programmed and successfully demonstrated. The technique of speech signal processing for extraction of sound parameters, noise removal, intensity and normalization of time , and features matching etc. have been done with the speech processor HM2007that being embedded efficiently in real time. Arduino receives the coded digital signals from the IWRS which being properly recognizes voice commands in order to control the function of the chair accordingly. The wheelchair does not respond to a false speech command. The overall mechanical assembly is driven by two14A/24V/200Watt DC motors having an engagement/disengagement clutch and speed reduction gear with built-in locking control. The system is tested using a speech password to start operation and seven Arabic commands to control motion: "Amam (forward), Saree'(fast), Batee' (slow), Khalf (backward), Yameen (right), Yesar (left), Tawaqaf (stop)". It proved a good working in clear and noisy environments with safe movement. General TermsVoice recognizer for motion control of wheelchairs

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Section: Related Workmentioning

confidence: 99%

Design of Voice Controlled Smart Wheelchair

Abed¹

2015

IJCA

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High-level hands-free control of wheelchair – a review

Sharmila

2016

Journal of Medical Engineering & Technology

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A vital perception in designing human-machine interfaces for people with disabilities is hands-free control. It is important in setting up communication among a machine and the part of human body. Nowadays, hands-free control is extensively used to help disabled people to control the wheelchair. The hands-free control functions are not only helpful to elderly and disabled, but also useful for normal people who might require using their hands for other tasks at the same time. As a result, normal people are capable of manipulating multiple tasks at the same time. The wheelchair is manoeuvred using brainwaves, eyes and facial muscles movements, voice, tongue, gesture. The mobility using a powered wheelchair improves the quality of life of the aged people and the people with mobility impairments significantly. These powered wheelchairs can be actuated using various high-level control interfaces. In this review, the use of natural biological signals and non-biological signal to do the hands-free control of powered wheelchair is presented in this article.

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Design of an electrical power assist kit for manual wheelchair under the conditions of developing countries

Mejía-Gutiérrez

Zuluaga-Holguín

2013

2013 International Conference on Engineering, Technology and Innovation (ICE) &Amp; IEEE International Technology Management Co

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New speech processor and ultrasonic sensors based embedded system to improve the control of a motorised wheelchair

Cited by 6 publications

References 10 publications

Design of Voice Controlled Smart Wheelchair

Design of Voice Controlled Smart Wheelchair

High-level hands-free control of wheelchair – a review

Design of an electrical power assist kit for manual wheelchair under the conditions of developing countries

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