Commercial Smoke Detector as an Aircraft Cabin Particle Sensor

The objective of this project was to repurpose a commercial smoke detector for use as a particle sensor on board an aircraft. The sensor software was modified using the Python programming language to extract obscuration data at 3-second intervals. The 3-second interval was necessary for response calibration. Particle response tests were conducted with an aerosol generator and two analyzers to determine the particle size and concentration response of the smoke detector. A robust mount was designed and assembled to fit the sensor and allow attachment near the air-circulation duct on the aircraft. Finite element analysis was performed and the mount was fitted with foam capable of absorbing at least 4 g of shock. Temperature tests were also conducted to see if the sensor could handle the temperature fluctuations typical on board aircraft.