Episode 19：有能量的人 (To be a person)

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Apple Watch Series 4 Nike+ 上手和几代心率测量原理浅谈

Outline

• 新手表外观
• Photoplethysmography (PPG)
• Electrocardiography (ECG)
• 第一、二代
  • 测量手腕血管内血液量的变化
  • 基于 PPG
  • 表背有两颗 LED
  • 能耗问题



• 第三代
  • 实时心率
  • 基于 PPG 原理计算 Heart rate variability (HRV)
    • 时域 (HKQuantityTypeIdentifierHeartRateVariabilitySDNN, the standard deviation of the interpulse intervals)
    • 频域

  
  
  • Pulse rate variability
  
  
  • Health Data 开放给读者
    • Health-Account-Export Health Data
    • Github HRV Analysis Software

  
  
  
  


• 第四代
  • 分别基于 PPG 和 ECG HRV
  • 心电图体检
  • HRV 是个体差异的参数



• Nike+特有的部分
  • Infograpg Module
  • Liquid 表盘
  • Vapor 表盘
  • Nike+ Run Club

Links

• PPG
• ECG
• Heart rate variability
• How to Measure Heart Rate Variability?
• A comparison of photoplethysmography and ECG recording to analyse heart rate variability in healthy subjects
• HRVAS: HRV Analysis Software
• How Apple Watch measures your heart rate
• How accurate is pulse rate variability as an estimate of heart
• New Apple Watch Series 4 complications for ‘Infograph’ face: corner gauges, curved bezel text, more
• Nike+ Training Club
• Nike+ Run Club
• 当我谈跑步时我谈些什么
• TRAINED
• 快速上手 watchOS 5，先从这些新功能开始
• Episode 17：叫醒 Apple Watch 里的米老鼠
• Byte Coffee

Host

• MilkShake羊

Sound Editor

• Kalaokay

Contact

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