Breathing system

A breathing manikin from PT Teknik combines the standard thermal manikin technology with an external breathing system.

A breathing manikin from PT Teknik combines the standard thermal manikin technology with an external breathing system. The integration of a thermo-regulating body and the breathing mechanism provides a realistic simulation of the human inhale and exhale airstreams. This makes the breathing manikin a strong tool for analysing the inhaled air quality and/or exhale air ‘pollution’ in indoor environments. The breathing system can be implemented on a full body manikin, or just a head or head and torso, depending on the research requirements.

The breathing system is based on a double pump-system with an air capacity of up to 70 liters per minute. This means that the system can simulate the breathing of a resting person as well as a person doing light to moderate exercise. The system can be setup to simulate breathing through the nose or mouth or both.

The breathing parameters are controlled by the manikin PC software. The breathing volume, waveform and inhale/exhale time can be set in the software according to the application, and these will also be logged in the data log file of the manikin.

The breathing system has a modular design and several items can be added to the basic pump system, including a dedicated flow-meter, an exhale heater and humidifier and a special air mixer unit for adding tracer-gases and/or aerosols.

Specifically for aerosol analysis, PT Teknik has also developed a novel coughing machine capable of creating strong airbursts with a flow of up to 12 liters per second. Liquid particles can be introduced through the airway inside the manikin head.

Standard breathing-system for simulating inhale and exhale in a PT manikin system:

  • Double pump control of inhale and exhale with breathing volume 0 – 70 l/m
  • Control of breathing and pause time
  • Control of breathing waveform (linear, continues, sinus)
  • Exhale heater and humidifier (optional)
  • Flow-meter (optional)
  • Gas/aerosol mixer (optional)

Coughing system for simulating a cough and dispensing liquid aerosols in a simplified way. Comes with a dedicated thermal head with a larger mouth opening

  • Mechanical adjustment of the coughing profile, volume (0 – 6 l) and flow-rate (0 – 12 l/s)
  • Mechanical adjustment of liquid particle mix
  • Heating of the coughed air
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