Flow signals can be collected at the airway opening using a mask/mouthpiece and pneumotachometer, and olume signals can be collected at the chest wall using ribcage and abdominal bands.

• 流率信号能在气道开口使用面罩/口罩和呼吸调速器收集，容积信号能在胸壁通过肋架和腹带收集。