How are fire detection mechanisms tailored for outdoor environments, particularly in small forest areas, given that most fire and smoke detectors are designed for indoor use?
22 January 2024 6:35pm
Fire detection is a sort of broad idea. Usually people detect the products of fire, and most often this is smoke.
Many home fire detectors in the US use a radioactive source and measure the absorption of the radiation by the air. More smoke means more absorption.
For outdoor fire detection, PM2.5 can be a very good smoke proxy, and outdoor PM2.5 sensing is pretty accessible.
This one is very popular in my area.
PurpleAir Classic Air Quality Monitor
The PurpleAir Classic air quality monitor is the original and popular PurpleAir sensor. It measures real-time PM2.5 concentrations for residential, commercial, or industrial use and can be installed indoors or outdoors. Built-in WiFi enables the air quality measurement device to transmit data to the real-time PurpleAir Map, which is stored and made available to any smart device. The PA-II is available in two editions. The SD edition includes an onboard SD logger to record and store data without a WiFi connection.Please note: This sensor does not come with a power adaptor. Find a suitable OUTDOOR-rated adaptor here or use your own USB power source (any 5V, 1.2 to 2.4 amp adaptor will work).
PurpleAir, Inc.
Bill Gray