Infra-Red Telescoping Rod for the Assessment of Chest Compression

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Principle of Operation
 
The irradiance from an emitter infrared LED is detected by an infrared phototransistor. The irradiance is related to the distance between the emitter and the detector according to an inverse square law.
 
The current from the detector is linearly related to the irradiance. The current is converted to voltage and linearized using inverter and square rooter analog circuits.
 
Features
The current IR-TRACC design offers the following features:
  • High-speed performance 
  • Point-to-Point measurement 
  • 3-D measurement capability 
  • Compact and durable size 
  • Differentiable Signal 
  • Highly Linear 
  • Long range (up to 90mm) 
  • Easy to calibrate and install 
  • Compatible with most DAS systems
Infra-Red Telescoping Rod for the Assessment of Chest Compression    Infra-Red Telescoping Rod for the Assessment of Chest Compression equation