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Related Experiment Videos

Voice controlled wheelchair

J A Clark, R B Roemer

    Archives of Physical Medicine and Rehabilitation
    |April 1, 1977
    PubMed
    Summary
    This summary is machine-generated.

    This study developed a voice control system for wheelchairs, achieving over 90% recognition for quadriplegics. Voice commands offer a practical solution for wheelchair control, even with background noise.

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    Area of Science:

    • Assistive Technology
    • Biomedical Engineering
    • Rehabilitation Engineering

    Background:

    • Severely physically disabled individuals, including quadriplegics, often face challenges in independently controlling mobility devices.
    • Existing wheelchair control systems may not be suitable or accessible for all users.
    • Development of alternative control methods is crucial for enhancing independence and quality of life.

    Purpose of the Study:

    • To develop and test a voice recognition and control system for wheelchairs.
    • To assess the feasibility and effectiveness of voice commands for wheelchair operation by quadriplegics.
    • To evaluate the system's compatibility with existing wheelchairs and its performance in various conditions.

    Main Methods:

    • Design of a compact, low-power voice recognition system with direct joystick cable integration.

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  • Implementation of an eight-word vocabulary and a feedback control system for speed and direction.
  • Laboratory testing with experienced speakers, normal subjects, and quadriplegic individuals.
  • Investigation of the system's performance under environmental noise conditions.

    • Main Results:

    • The voice control system demonstrated a recognition rate exceeding 90% in laboratory tests with experienced speakers.
    • The system is wheelchair compatible, featuring low power consumption (approx. 20W), small size, and light weight (approx. 22 lb).
    • No wheelchair modification is required, as the system directly interfaces with the existing joystick control cable.
    • Environmental noise had minimally deleterious effects on system performance.

    Conclusions:

    • Voice commands represent a potentially useful and practical means for wheelchair control.
    • The developed system shows promise for enhancing independence and mobility for individuals with severe physical disabilities.
    • Further improvements are planned to increase recognition rates and practical utility for widespread adoption.