[KongchangAI]
Unverified80% confidenceFactTime unknown

智能床垫的睡眠监测若采用压电薄膜(BCG弹道心冲击图)传感器,心率误差可控制在±3bpm、呼吸率误差±2次/分,精度接近医疗级;而仅靠压力传感器估算的呼吸数据误差常超±5次/分,只能做趋势参考

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