01
Filtration
Pre-filter mesh, H13 HEPA with about 2.4 m² of media, then a carbon bed. CADR, as designed: 380 m³/h. Concept figure.
Engineering
Inside AURA.
A short machine. A sealed air path. A motor you should not hear from the pillow. These are concept drawings for a fictional product — precise on purpose, not a lab certificate.
Assembly
Pleated cylinder, 2.4 m² media
Sensor architecture
The array sits in the intake stream, not in a decorative port on the front. Corrections for heat and humidity happen before a number is trusted.
- PM2.5 / PM10
- Laser particle counter, sampled continuously
- VOC
- Metal-oxide sensor for volatile compounds
- CO₂
- NDIR module, used as a proxy for a full room
- Temperature
- Used to correct the other readings
- Humidity
- Used the same way, and shown on its own
02
Noise
The motor is on rubber. The shell is heavy. Sleep is tuned to 24 dB at one meter. Boost reaches 52 dB and is not the point.
03
Power
Sleep sits near 6 W. A typical auto hour is about 18 W. Full power is 45 W — less than a bright lamp, and rarely held.