How does sip-and-puff control determine direction?

How does sip-and-puff control determine direction?

• A. Pressure from sipping
• B. Foot pedal
• C. Force of inhalation/exhalation into a tube near mouth
• D. Head movement

Answer: (C)

Airflow through a mouthpiece determines direction in sip-and-puff control. The user creates either a sip (inhalation) or a puff (exhalation) into the tube near the mouth, and sensors detect these distinct breath patterns. Each breath pattern is mapped to a specific directional command, so the device moves accordingly. The force or duration of the breath can influence speed, but the direction comes from which breath pattern is produced and which sensor is activated. Other input methods like a foot pedal or head movement are separate technologies, not the mechanism of sip-and-puff.

Airflow through a mouthpiece determines direction in sip-and-puff control. The user creates either a sip (inhalation) or a puff (exhalation) into the tube near the mouth, and sensors detect these distinct breath patterns. Each breath pattern is mapped to a specific directional command, so the device moves accordingly. The force or duration of the breath can influence speed, but the direction comes from which breath pattern is produced and which sensor is activated. Other input methods like a foot pedal or head movement are separate technologies, not the mechanism of sip-and-puff.