心拍と呼吸を計測するサブミリメートル単位の胸壁微小変位検出
心室ポンプ収縮による微小な 0.1mm〜0.5mm の胸壁振動を、より大きな 5mm〜12mm の呼吸運動から高精度に分離抽出。
Variational Mode Decomposition (VMD)
VMD mathematically separates the narrow-band respiratory harmonics from high-frequency cardiac beat signatures without phase distortion.
- Measures respiration rate within ±1 breath per minute.
- Heart rate tracking accuracy within ±2 beats per minute.
- Operates through winter jackets, heavy blankets, and seat cushions.
- Immunity to in-cabin optical shadows, fog, and total darkness.
ドメインポートフォリオを見る