Systems and methods for building fire detection

A fire detection and suppression system comprising:

• a wireless mesh network comprising a plurality of wireless mesh nodes distributed throughout a building, each of the plurality of wireless mesh nodes configured to:
• transmit and receive wireless signals during a baseline time period and record a baseline set of signal characteristics that characterize the wireless signals during the baseline time period;
• transmit and receive the wireless signals during a second time period after the baseline time period and record a second set of signal characteristics that characterize the wireless signals during the second time period;
• a controller configured to:
• determine that the second set of signal characteristics are abnormal relative to the baseline set of signal characteristics as a result of a fire within the building degrading the wireless signals during the second time period;
• detect the fire within the building in response to a determination that the second set of signal characteristics are abnormal relative to the baseline set of signal characteristics;
• and
• initiate corrective action in response to detecting the fire within the building.

A method for detecting fires in a building, the method comprising:

• establishing a wireless mesh network comprising a plurality of wireless mesh nodes distributed throughout the building, each of the plurality of wireless mesh nodes configured to transmit and receive wireless signals;
• operating the plurality of wireless mesh nodes to transmit and receive the wireless signals during a baseline time period and recording a baseline set of signal characteristics that characterize the wireless signals during the baseline time period;
• operating the plurality of wireless mesh nodes to transmit and receive the wireless signals during a second time period after the baseline time period and recording a second set of signal characteristics that characterize the wireless signals during the second time period;
• determining that the second set of signal characteristics are abnormal relative to the baseline set of signal characteristics as a result of a fire within the building degrading the wireless signals during the second time period;
• and
• detecting the fire within the building in response to a determination that the second set of signal characteristics are abnormal relative to the baseline set of signal characteristics.